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  • General Chemistry  (77,717)
  • Animals  (27,852)
  • Cell & Developmental Biology  (25,032)
  • Aircraft Stability and Control
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  • 1
    Publication Date: 2024-02-26
    Description: Identifcation of ontogenetic age classes plays an important role in the felds of zoology, palaeontology and archaeology, where accurate age classifcations of (sub)fossil remains are a crucial component for the reconstruction \nof past life. Textural ageing\xe2\x80\x94the identifcation of age-related bone surface textures\xe2\x80\x94provides a size-independent \nmethod for age assessment of vertebrate material. However, most of the work so far is limited to qualitative results. \nWhile qualitative approaches provide helpful insights on textural ageing patterns, they are heavily subject to observer \nbias and fall short of quantitative data relevant for detailed statistical analyses and cross-comparisons. Here, we present a pilot study on the application of 3D surface digital microscopy to quantify bone surface textures on the long \nbones of the grey heron (Ardea cinerea) and the Canada goose (Branta canadensis) using internationally verifed \nroughness parameters. Using a standardised measuring protocol, computed roughness values show a strong correlation with qualitative descriptions of textural patterns. Overall, higher roughness values correspond to increased numbers of grooves and pits and vice versa. Most of the roughness parameters allowed distinguishing between diferent \nontogenetic classes and closely followed the typical sigmoidal animal growth curve. Our results show that bone \ntexture quantifcation is a feasible approach to identifying ontogenetic age classes.
    Keywords: General Physics and Astronomy ; General Environmental Science ; General Biochemistry ; Genetics and Molecular Biology ; General Materials Science ; General Chemistry ; Roughness ; Surfaces ; Taphonomy ; Topography ; Bone ; Ontogeny ; Digital microscopy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    University of Calgary Press
    Publication Date: 2022-07-19
    Description: How have our interactions with animals shaped Calgary? What can we do to ensure that humans and animals in the city continue to co-exist, and even flourish together? This wide-ranging book explores the ways that animals inhabit our city, our lives and our imaginations. Essays from animal historians, wildlife specialists, artists and writers address key issues such as human-wildlife interactions, livestock in the city, and animal performers at the Calgary Stampede. Contributions from some of Calgary's iconic arts institutions, including One Yellow Rabbit Performance Theatre, Decidedly Jazz Danceworks, and the Glenbow Museum, demonstrate how animals continue to be a source of inspiration and exploration for fashion, art, dance, and theatre. The full-colour volume is beautifully illustrated throughout with archival images, wildlife photography, documentary and production stills, and original artwork. Calgary: City of Animals is published in co-operation with the Calgary Institute for the Humanities.
    Keywords: Nature ; Animals ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes::JFFZ Animals & society
    Language: English
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  • 3
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    University of Calgary Press
    Publication Date: 2022-07-19
    Description: Animal Metropolis brings a Canadian perspective to the growing field of animal history, ranging across species and cities, from the beavers who engineered Stanley Park to the carthorses who shaped the city of Montreal. Some essays consider animals as spectacle: orca captivity in Vancouver, polar bear tourism in Churchill, Manitoba, fish on display in the Dominion Fisheries Museum, and the racialized memory of Jumbo the elephant in St. Thomas, Ontario. Others examine the bodily intimacies of shared urban spaces: the regulation of rabid dogs in Banff, the maternal politics of pure milk in Hamilton and the circulation of tetanus bacilli from horse to human in Toronto. Another considers the marginalization of women in Canada’s animal welfare movement. The authors collectively push forward from a historiography that features nonhuman animals as objects within human-centered inquiries to a historiography that considers the eclectic contacts, exchanges, and cohabitation of human and nonhuman animals. With contributions by: Kristoffer Archibald, Jason Colby, George Colpitts, Joanna Dean, Carla Hustak, Darcy Ingram, Sean Kheraj, William Knight, Sherry Olson, Rachel Poliquin, and Christabelle Sethna
    Keywords: Animals ; Anthropology ; Environmental Science ; History ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHM Anthropology ; bic Book Industry Communication::H Humanities::HB History ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCN Environmental economics ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes::JFFZ Animals & society
    Language: English
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  • 4
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    Berghahn Books | Berghahn Books
    Publication Date: 2023-02-02
    Description: Employing methodological perspectives from the fields of political geography, environmental studies, anthropology, and their cognate disciplines, this volume explores alternative logics of sentient landscapes as racist, xenophobic, and right-wing. While the field of sentient landscapes has gained critical attention, the literature rarely seems to question the intentionality of sentient landscapes, which are often romanticized as pure, good, and just, and perceived as protectors of those who are powerless, indigenous, and colonized. The book takes a new stance on sentient landscapes with the intention of dispelling the denial of “coevalness” represented by their scholarly romanticization.
    Keywords: Social Science ; Sociology ; Rural ; Nature ; Animals ; Social Science ; Anthropology ; Cultural & Social ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSF Rural communities ; bic Book Industry Communication::W Lifestyle, sport & leisure::WN Natural history::WNC Wildlife: general interest ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHM Anthropology::JHMC Social & cultural anthropology, ethnography
    Language: English
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  • 5
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    transcript Verlag | transcript Verlag
    Publication Date: 2024-03-28
    Description: Wie werden Natur und Tiere durch die Multispezies-Ethnographie inklusiv in Forschungsprojekte integriert? Katharina Ameli fokussiert die inter- und multidisziplinäre Zusammenarbeit. Aus einer Untersuchung der Schnittstellen zwischen gesellschafts- und naturwissenschaftlich orientierten Fachdisziplinen ergibt sich eine komplexe Betrachtung von Natur, Mensch und Tier. Die Einblicke in Interdependenzen unterschiedlicher Fachdisziplinen verdeutlichen den Bedarf an einer Multispezies-Ethnographie zur Analyse von MenschenTiereNaturenKulturen.
    Keywords: Natur ; Mensch ; Tiere ; Naturverständnis ; Interdisziplinarität ; Qualitative Forschung ; Kultur ; Ethnographie ; Umwelt ; Tier ; Human-animal Studies ; Umweltsoziologie ; Kulturanthropologie ; Kultursoziologie ; Kulturwissenschaft ; Nature ; Human ; Animals ; Understanding of Nature ; Interdisciplinarity ; Qualitative Research ; Culture ; Ethnography ; Environment ; Animal ; Environmental Sociology ; Cultural Anthropology ; Sociology of Culture ; Cultural Studies ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBF Social and ethical issues::JBFU Animals and society ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNT Social impact of environmental issues ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHM Anthropology::JHMC Social and cultural anthropology
    Language: German
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  • 6
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    University Press of Colorado | University Press of Colorado
    Publication Date: 2024-04-02
    Description: Animals and Inequality in the Ancient World explores the current trends in the social archaeology of human-animal relationships, focusing on the ways in which animals are used to structure, create, support, and even deconstruct social inequalities. The authors provide a global range of case studies from both New and Old World archaeology—royal Aztec dog burial, the monumental horse tombs of Central Asia, and the ceremonial macaw cages of ancient Mexico among them. They explore the complex relationships between people and animals in social, economic, political, and ritual contexts, incorporating animal remains from archaeological sites with artifacts, texts, and iconography to develop their interpretations. Animals and Inequality in the Ancient World presents new data and interpretations that reveal the role of animals, their products, and their symbolism in structuring social inequalities in the ancient world. The volume will be of interest to archaeologists, especially zooarchaeologists, and classical scholars of pre-modern civilizations and societies.  Contributors: Alejandra Aguirre Molina, Benjamin S. Arbuckle, Levent Atici, Douglas V. Campana, Roderick Campbell, Ximena Chá­vez Balderas, Pam J. Crabtree, Susan D. deFrance, Kitty F. Emery, Abigail Holeman, H. Edwin Jackson, Leonardo López Lujá­n, Michael MacKinnon, Arkadiusz Marciniak, Sue Ann McCarty, Neil L. Norman, Gilberto Perez, Bernardo Rodriguez, William A. Saturno, Ashley E. Sharpe, Nawa Sugiyama, Charlotte K. Sunseri, Naomi Sykes, Fabiola Torres, Raul Valadez, Norma Valentin Maldonado, Adam S. Watson, Joshua Wright, Belem Zuniga-Arelleno
    Keywords: History ; Ancient ; Social Science ; Archaeology ; Nature ; Animals ; thema EDItEUR::N History and Archaeology::NH History::NHC Ancient history ; thema EDItEUR::N History and Archaeology::NK Archaeology ; thema EDItEUR::W Lifestyle, Hobbies and Leisure::WN Nature and the natural world: general interest::WNC Wildlife: general interest
    Language: English
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  • 7
    Publication Date: 2024-04-05
    Description: Neurodegenerative diseases are the most frequent cause of dementia, representing a burden for public health systems (especially in middle and middle-high income countries). Although most research on this issue is concentrated in first-world centers, growing efforts in South America are affording important breakthroughs. This emerging agenda poses new challenges for the region but also new opportunities for the field. This book aims to integrate the community of experts across the globe and the region, and to establish new challenges and developments for future investigation. We present research focused on neurodegenerative research in South America. We introduce studies assessing the interplay among genetic, neural, and behavioral dimensions of these diseases, as well as articles on vulnerability factors, comparisons of findings from various countries, and works promoting multicenter and collaborative networking. More generally, our book covers a broad scope of human-research approaches (behavioral assessment, neuroimaging, electromagnetic techniques, brain connectivity, peripheral measures), animal methodologies (genetics, epigenetics, proteomics, metabolomics, other molecular biology tools), species (all human and non-human animals, sporadic, and genetic versions), and article types (original research, review, and opinion papers). Through this wide-ranging proposal, we hope to introduce a fresh approach to the challenges and opportunities of research on neurodegeneration in South America.
    Keywords: RC321-571 ; Q1-390 ; South America ; Multicenter research ; Neurodegenerative Diseases ; Neurosciences ; Public Health ; Animals ; Clinical Protocols ; Research ; Human Experimentation ; Dementia ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAN Neurosciences
    Language: English
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  • 8
    Publication Date: 2024-04-04
    Description: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact
    Keywords: drugs ; Behavior ; Memory tasks ; pre-clinical ; clinical ; Humans ; Animals ; thema EDItEUR::P Mathematics and Science::PD Science: general issues ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKG Pharmacology
    Language: English
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  • 9
    Publication Date: 2020-01-23
    Description: This presentation is a refinement of an earlier presentation describing the methods of generating models used for designing control laws for use in vehicles with significant structural effects.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN76537 , AIAA SciTech Forum 2020; Jan 06, 2020 - Jan 10, 2020; Orlando, FL; United States
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  • 10
    Publication Date: 2020-01-22
    Description: The lightweight structures and unconventional configurations being considered for the next generation of aircraft mean that any effort to predict or control the flight dynamics is impacted by the structural dynamics. One of the most severe forms of coupling between aeroelasticity and flight dynamics is an instability called body freedom flutter. The existing tools often assume a relatively weak effect of structural dynamics on the flight dynamics, and are therefore incapable of modeling strong interactions like body freedom flutter. A method of combining different sources of data traditionally used for aeroelasticity and flight dynamics is described by reconciling many of the differences between these models. By building upon past modeling efforts, a level of familiarity in the approach is achieved. Generally the differences from the traditional approaches are subtle but significant. The traditional frequency domain flutter model in a modal coordinate system is converted to a form consistent with a time domain flight dynamics model. The time domain rational function approximation about a non-inertial coordinate system and the unique constraints for the conversion between the inertial and non-inertial coordinate systems are discussed. A consistent transformation of the states of aeroelastic models to flight dynamics models is derived, which enables the integration of data from higher fidelity computational fluid dynamics models or wind-tunnel testing. The present method of integrating multidisciplinary data was used to create models that compare well with X-56A flight-test data, including conditions past the flutter speed.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN75452 , AIAA SciTech Forum 2020; Jan 06, 2020 - Jan 10, 2020; Orlando, FL; United States
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  • 11
    Publication Date: 2019-07-20
    Description: These slides describe a method and technology of modeling flexible aircraft for active control of structural dynamics. Objective: Generate models useful for the design and evaluation of control laws for active structural control and flutter suppression that are able to accurately predict body freedom flutter.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN66921 , Aerospace Control and Guidance Systems Committee (ACGSC) Meeting; Mar 27, 2019 - Mar 29, 2019; Santa Fe, NM; United States
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  • 12
    Publication Date: 2019-07-20
    Description: A multi-objective optimal control technique is modified to accommodate changing cost function weights and is used to control a flexible wing aircraft model. Variation of the weights is used to adjust the relative importance of each objective according to either a prescribed function of time or of the state. Several techniques for obtaining a practical approximation to the optimal control solution are presented, and stability of a specific weight structure with the optimal controller is demonstrated. Functionality of the multi-objective control design with weight variation is demonstrated in simulation of a flexible wing transport aircraft and is shown to improve performance over the fixed weight version both at a constant flight condition and across changing flight conditions.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN64647 , AIAA SciTech Forum 2019; Jan 07, 2019 - Jan 11, 2019; San Diego, CA; United States
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  • 13
    Publication Date: 2019-07-20
    Description: A new 6-DoF aeroservoelastic (ASE) Common Research Model (CRM) provided by The Boeing Company with aspect ratio 13.5 and 17 control surfaces per wing is utilized to demonstrate combined tracking and optimal multi-objective control. The multi-objective controller is derived on the closed loop tracking controller, and utilizes state and gust estimates provided by an extended state observer. Various methods of model reduction useful for control and estimation are presented. A computationally efficient MATLAB/Simulink simulation is presented which includes actuator dynamics, rate and deflection saturation limits, and gust disturbance inputs. The platform is used to demonstrate excellent 6-DoF tracking control performance coupled with the multi-objective controller, which is shown to effectively reduce structural mode movement, wing root bending moment, and drag. State and gust estimation is also shown to perform well, even when derived and/or implemented with significantly fewer states than the original full-sized model.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN271828 , AIAA Science and Technology Forum and Exposition; Jan 07, 2019 - Jan 11, 2019; San Diego, CA; United States
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  • 14
    Publication Date: 2019-07-20
    Description: Slides for an invited presentation (as part of a series) at Santa Clara University, invited by prof. Mohammad Ayoubi. The slides are an overview and summary of past and current research projects in the field of envelope protection, upset prevention and stall recovery guidance, with the aim to avoid loss of control accidents and improve safety in air transportation. The overall aim of this presentation series is to inspire students and to show them possible opportunities that they can pursue for their later careers paths.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN52363 , Santa Clara University Invited Lecture Series; Santa Clara, CA; United States
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  • 15
    Publication Date: 2019-09-13
    Description: An extension of model reference adaptive control is presented that accommodates use of a time-varying reference model. Specifically, the reference model is taken to be a time-varying convex combination of two linear, time-invariant models. The design is intended to act as a way to smoothly transition between two different reference models without resorting to a scheduled switch. It also provides the ability to use an interpolated reference model when the plant is operating between design points. The time variation of the combination must satisfy some requirements to ensure stability but is otherwise user choice. Subject to these requirements, bounded tracking error behavior is demonstrated via Lyapunov stability analysis for the single-input, single-output, output feedback case. Tracking error convergence is asymptotic when time variation ceases. The proposed design is demonstrated in simulation of a numerical model.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN66631 , American Control Conference; Jul 10, 2019 - Jul 12, 2019; Philadelphia, PA; United States
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  • 16
    Publication Date: 2019-10-30
    Description: No abstract available
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN74004
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  • 17
    Publication Date: 2019-07-13
    Description: This paper verifies a motion cueing strategy for improved pilot stall recovery training in commercial transport simulators. Eight airline transport pilots flew a high-altitude stall recovery task in the NASA B747 level-D-certified full flight simulator under three different motion configurations: no motion, baseline motion, and enhanced motion. For each motion condition, pilots performed the task with both baseline aircraft dynamics and aircraft dynamics enhanced with lateral-directional characteristics of the airplane at angle of attack approaching stall. Motion configuration significantly affected: 1) pilot opinions on the helpfulness of motion in performing the task, 2) the maximum roll angle in the stall maneuver, 3) the minimum load factor in the recovery, 4) the number of secondary stick shakers in the stall recovery, and 5) the maximum airspeed in the recovery. The two different aircraft dynamics significantly affected: 1) pilot opinions on the noticeability of the banking roll off near the stall and 2) the maximum roll angle in the stall maneuver. These results indicate that the relatively minor enhancements to the motion logic of heritage commercial transport simulators presented here can significantly improve pilot performance in simulated stall recoveries, and potentially improve stall recovery training.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN65276 , AIAA SciTech Forum 2019; Jan 07, 2019 - Jan 11, 2019; San Diego, CA; United States
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  • 18
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    In:  CASI
    Publication Date: 2019-07-13
    Description: An overview of the flight control work in the Intelligent Systems Division at NASA Ames is presented. The highlight focuses on efforts surrounding performance-adaptive aeroelastic wing shaping for aircraft with flexible wings. Topics covered include aeroservoelastic modeling capabilities, online drag-optimizing control designs, gust and maneuver load alleviation techniques, and related wind tunnel demonstrations.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN67091 , Aerospace Control and Guidance Systems Committee Meeting; Mar 27, 2019 - Mar 29, 2019; Santa Fe, NM; United States
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  • 19
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Stability and Control
    Type: JSC-E-DAA-TN69878-2 , AIAA AVIATION Forum and Exposition; Jun 17, 2019 - Jun 21, 2019; Dallas, TX; United States
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  • 20
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Stability and Control
    Type: JSC-E-DAA-TN69878-1 , AIAA AVIATION Forum and Exposition; Jun 17, 2019 - Jun 21, 2019; Dallas, TX; United States
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  • 21
    Publication Date: 2021-04-25
    Description: Niphargus is a speciose amphipod genus found in groundwater habitats across Europe. Three Niphargus species living in the sulphidic Frasassi caves in Italy harbour sulphur-oxidizing Thiothrix bacterial ectosymbionts. These three species are distantly related, implying that the ability to form ectosymbioses with Thiothrix may be common among Niphargus. Therefore, Niphargus-Thiothrix associations may also be found in sulphidic aquifers other than Frasassi. In this study, we examined this possibility by analysing niphargids of the genera Niphargus and Pontoniphargus collected from the partly sulphidic aquifers of the Southern Dobrogea region of Romania, which are accessible through springs, wells and Movile Cave. Molecular and morphological analyses revealed seven niphargid species in this region. Five of these species occurred occasionally or exclusively in sulphidic locations, whereas the remaining two were restricted to nonsulphidic areas. Thiothrix were detected by PCR on all seven Dobrogean niphargid species and observed using microscopy to be predominantly attached to their hosts' appendages. 16S rRNA gene sequences of the Thiothrix epibionts fell into two main clades, one of which (herein named T4) occurred solely on niphargids collected in sulphidic locations. The other Thiothrix clade was present on niphargids from both sulphidic and nonsulphidic areas and indistinguishable from the T3 ectosymbiont clade previously identified on Frasassi-dwelling Niphargus. Although niphargids from Frasassi and Southern Dobrogea are not closely related, the patterns of their association with Thiothrix are remarkably alike. The finding of similar Niphargus-Thiothrix associations in aquifers located 1200 km apart suggests that they may be widespread in European groundwater ecosystems.
    Keywords: amphipods; ecology; sulphide; symbiosis; systematics; taxonomy ; 551 ; Amphipoda ; Animals ; DNA, Bacterial ; Ecosystem ; Groundwater ; Molecular Sequence Data ; Phylogeny ; RNA, Ribosomal, 16S ; Romania ; Sequence Analysis, DNA ; Sulfur ; Symbiosis ; Thiothrix
    Language: English , English
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  • 22
    Publication Date: 2019-07-20
    Description: The ability to meet a controlled time of arrival during a continuous descent operation will enable environmentally friendly and fuel efficient descent operations while simultaneously maintaining airport throughput. Previous work showed that guidance strategies based on a frequent recalculation of the optimal trajectory during the descent result in excellent environmental impact mitigation figures while meeting operational constraints in the presence of modelling errors. However, the time lag of recalculating the trajectory using traditional optimisation algorithms could lead to performance degradation and stability issues. This paper proposes an alternative strategy, which allows for fast updates of the optimal trajectory based on parametric sensitivities. Promising results show that the performance of this method is comparable to that of instantaneously recalculating the optimal descent trajectory at each time sample.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-30424 , AIAA/IEEE Digital Avionics Systems Conference (DASC); Sep 23, 2018 - Sep 27, 2018; London, England; United Kingdom
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  • 23
    Publication Date: 2019-07-20
    Description: A deconvolution method is presented for estimating input data from measured output data and a model of the dynamic process involved. The method uses an optimal Wiener filter for separating the measured data into signal and noise components, and a high-accuracy Fourier transform for inverting the model dynamics in the frequency domain. The method is an extension of optimal Fourier smoothing, and uses a technique to enhance the contrast between the signal and noise spectra in designing the Wiener filter. The deconvolution method was applied to simulation and flight test data for the purposes of removing unwanted distortions introduced by signal-conditioning filters and sensor dynamics, and for reconstructing turbulence inputs from measured sensor data. Results indicated hat the method performs well given good signal-to-noise levels and accurate models of the dynamic process.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-28783 , AIAA Aviation and Aeronautics Forum and Exposition; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 24
    Publication Date: 2019-07-20
    Description: A method for estimating aeroelastic stability and control derivatives for flexible aircraft is developed and demonstrated using flight test data for the X-56A subscale demonstrator. The method uses the equation-error approach with frequency-domain data, and can be applied post-flight or in real time during flight. The non-dimensional aeroelastic forces and moments and the explanatory variables (including generalized displacement, rate, and acceleration states for the vibration modes) are estimated using a finite element model and onboard sensor measurements in both a least squares and Kalman filtering framework. The data are then transformed into the frequency domain for parameter estimation using equation error. This method can result in a more efficient analysis than with other iterative methods, and can leverage existing statistical tools for model structure determination, data collinearity detection, combining multiple maneuvers or prior information, and others to improve model quality.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-28533 , AIAA Aviation and Aeronautics Forum (Aviation 2018); Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 25
    Publication Date: 2019-07-20
    Description: Active flutter suppression has been demonstrated in simulation by many researchers, generally using methods based on linear aerodynamics and often with simplistic geometries. In this paper, active flutter suppression is demonstrated in a simulation using a Navier-Stokes aerodynamics code, FUN3D (Fully Unstructured Navier-Stokes Three-Dimensional), and a realistic transport aircraft configuration. This is accomplished using simple observer-feedback controllers derived from linear aeroelastic models, including reduced order models built via FUN3D data. The development of these reduced order models is described here. It is shown that controllers derived from reduced order models of the nonlinear aerodynamics outperform controllers based on linear aerodynamics.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-28523 , AIAA Aviation and Aeronautics Forum (Aviation 2018); Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 26
    Publication Date: 2019-07-13
    Description: In recent studies, it has been observed that loss of control in flight is the most frequent primary cause of accidents. A significant share of accidents in this category can be remedied by upset prevention if possible, and by upset recovery if necessary, in this order of priorities. One of the most important upsets to be recovered from is stall. Recent accidents have shown that a correct stall recovery maneuver remains a big challenge in civil aviation, partly due to a lack of pilot training. A possible strategy to support the flight crew in this demanding context is calculating a recovery guidance signal, and showing this signal in an intuitive way on one of the cockpit displays, for example by means of the flight director. Different methods for calculating the recovery signal, one based on fast model predictive control and another using an energy based approach, have been evaluated in four relevant operational scenarios by experienced commercial as well as test pilots in the Vertical Motion Simulator at NASA Ames Research Center. Evaluation results show that this approach could be able to assist the pilots in executing a correct stall recovery maneuver.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN50867 , SciTech Forum; Jan 08, 2018 - Jan 12, 2018; Kissimmee, FL; United States
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  • 27
    Publication Date: 2019-07-13
    Description: This paper describes a recent development of an integrated fully coupled aeroservoelastic flight dynamic model of the NASA Generic Transport Model (GTM). The integrated model couples nonlinear flight dynamics to a nonlinear aeroelastic model of the GTM. The nonlinearity includes the coupling of the rigid-body aircraft states in the partial derivatives of the aeroelastic angle of attack. Aeroservoelastic modeling of the control surfaces which are modeled by the Variable Camber Continuous Trailing Edge Flap is also conducted. The R.T. Jones' method is implemented to approximate unsteady aerodynamics. Simulations of the GTM are conducted with simulated continuous and discrete gust loads..
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN50754 , AIAA SciTech Forum; Jan 08, 2018 - Jan 12, 2018; Kissimmee, FL; United States
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  • 28
    Publication Date: 2019-07-13
    Description: Stall characteristics of a wing whose design was based on Prandtls minimum induced drag analysis is presented. Flow field is resolved using RANS CFD (Computational Fluid Dynamics) solver OVERFLOW-2. Both in freestream and in ground effect are analyzed. In addition, effect of low-Mach preconditioner on the stall characteristic is presented. Results show that simulations that lack preconditioner predicts higher stall angle as well as much more benign behavior near the stall angle. Stall analysis in freestream show that flow begins to separate at the inboard region. The flow at the tip remains attached until approximately 19.0 degrees angle of attack.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN48257 , AIAA Applied Aerodynamics Conference; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States|AIAA Aviation and Aeronautics Forum (Aviation 2018); Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 29
    Publication Date: 2019-07-13
    Description: These slides are the companion to the paper on the ACT experiment flown using a G-III autopilot and ADS-B datalink.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN58037 , AIAA Aviation Forum; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 30
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-07-13
    Description: This presentation discusses the NASA Armstrong PTERA-SAW flight simulation. The uses of this simulation are to study the aerodynamic effects of moving outer wing panels in flight, develop a flight control system, flight safety analysis, mission planning, flight envelope expansion, and post-flight data analysis.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN57916 , AIAA Aviation 2018; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 31
    Publication Date: 2019-08-28
    Description: An extremum-seeking control system for formation flight that uses blended performance parameters in a conglomerate performance function that better approximates drag reduction than performance functions formed from individual measurements. Generally, a variety of different measurements are taken and fed to a control system, the measurements are weighted, and are then subjected to a peak-seeking control algorithm. As measurements are continually taken, the aircraft will be guided to a relative position which optimizes the drag reduction of the formation. Two embodiments are discussed. Two approaches are shown for determining relative weightings: "a priori" by which they are qualitatively determined (by minimizing the error between the conglomerate function and the drag reduction function), and by periodically updating the weightings as the formation evolves.
    Keywords: Aircraft Stability and Control
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  • 32
    Publication Date: 2019-10-19
    Description: Project Link! is a NASA-led effort to study the feasibility of multi-aircraft aerial docking systems. In these systems, a group of vehicles physically link to each other during flight to form a larger ensemble vehicle with increased aerodynamic performance and mission utility. This paper presents a dynamic model and control architecture for a system of fixed-wing vehicles with this capability. The dynamic model consists of the 6 degree-of-freedom fixedwing aircraft equations of motion, a spring-damper-magnet system to represent the linkage force between constituent vehicles, and the NASA-Burnham-Hallock wingtip vortex model to represent the close-proximity aerodynamic interactions between constituents before the linking occurs. The control architecture consists of a guidance algorithm to autonomously drive the constituents towards their linking partners and an inner-loop angular rate controller. A simulation was constructed from the model, and the flight dynamic modes of the linked system were compared to the individual vehicles. The main contributions of this work are twofold. First is the introduction of close-proximity aerodynamic effects to create a realistic simulation framework for this problem. Second is the application of a sophisticated leaderfollower guidance algorithm to achieve in-air wingtip docking. Simulation results for both before and after linking are presented.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-28646 , Journal of Guidance, Control, and Dynamics (ISSN 0731-5090) (e-ISSN 1533-3884); 41; 11; 2327-2337
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  • 33
    Publication Date: 2019-07-12
    Description: A summary of output measurement equations for onboard sensors used in flight testing of flexible aircraft is presented. These equations include the effects of structural flexibility and are considerably more complex than the standard equations for rigid-body aircraft. The output equations discussed include accelerations from linear accelerometers, strains, angular rates, angular accelerations, Euler angles, true airspeed, and air flow angles. The output equations are derived in full form and then simplified in some cases. Linearized output equations, suitable for state-space or transfer function models, are also developed. Example flight test data from the X-56A subscale aeroelastic demonstrator is discussed, for reference.
    Keywords: Aircraft Stability and Control
    Type: NASA/TM-2018-220102 , L-20956 , NF1676L-31027
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  • 34
    Publication Date: 2019-07-13
    Description: From April to May 2017, the National Aeronautics and Space Administration Armstrong Flight Research Center completed a series of flights with a trail C-20A airplane surfing in the wake of a Gulfstream III airplane using a commercially available datalink as the primary communication between the two aircraft. The purpose of this test was to characterize the aerodynamic benefits received by the trail airplane flying in the upwash portion of the wake generated from the lead airplane. Lateral and vertical relative position to the wake were automatically controlled through an experimental programmable autopilot on the C-20A airplane. Long-track, the separation distance between the two aircraft, was maintained by test pilots managing throttle position using customized cockpit displays. These displays provided the pilots with throttle cues for maintaining long-track position and situational awareness of the wake vortex relative to the position of the trail airplane. Flight testing demonstrated the ability of the pilots to use these displays to maintain a safe long-track distance, but found there to be trades between tracking performance and the frequency of throttle motion. The wake awareness display provided the pilots with adequate situational awareness of the wake vortex during the flight experiment. This paper presents a summary of the design, development, and flight evaluation of the pilot displays and long-track control.
    Keywords: Aircraft Stability and Control
    Type: AFRC-E-DAA-TN54320 , AIAA Aviation and Aeronautics Forum and Exposition; Jun 25, 2018 - Jun 29, 2018; Atlanta, GA; United States
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  • 35
    Publication Date: 2019-06-11
    Description: Three different types of maneuvers were designed to separately quantify the pitch rate and angle-of-attack rate contributions to the nondimensional aerodynamic pitching moment coefficient. These maneuvers combined pilot inputs and automatic multisine excitations, and they were demonstrated with the subscale T-2 and Bat-4 airplanes using the NASA Airborne Subscale Transport Aircraft Research flight-test facility. Stability and control derivatives (in particular, Cmq and Cm) were accurately estimated from the flight-test data. These maneuvers can be performed with many types of aircraft, and the results can be used to improve physical insight into the flight dynamics, facilitate more accurate comparisons with wind-tunnel experiments or numerical investigations, and increase simulation prediction fidelity.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-26357 , Journal of Aircraft (ISSN 0021-8669) (e-ISSN 1533-3868); 54; 6; 2367-2377
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  • 36
    Publication Date: 2019-07-12
    Description: A test in the Langley 12-Foot Low-Speed Tunnel was conducted as a risk mitigation effort to quickly obtain some low-speed stability and control data on a "double-bubble" or D8 transport configuration. The test also tested some configuration design trades. A 5-percent scale model was tested with stabilizer, elevator, rudder and aileron control deflections. This report summarizes the test results.
    Keywords: Aircraft Stability and Control
    Type: NASA/TM-2017-219797 , L-20897 , NF1676L-29029
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  • 37
    Publication Date: 2019-07-20
    Description: Kalman filter based spacecraft attitude estimation has been used in many space missions and has been widely discussed in literature. While some models in spacecraft attitude estimation include spacecraft dynamics, most do not. To our best knowledge, there is no analysis to determine which model is a better choice. In this paper, we discuss the reasons why spacecraft dynamics should be considered in the Kalman filter based spacecraft attitude estimation problem. We also propose a reduced quaternion spacecraft dynamics model which admits additive noise. Geometry of the reduced quaternion model and the additive noise are discussed. This formulation makes computation easier than the one with full quaternion. Simulations are conducted to justify our claims.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-24892 , Advances in Aircraft and Spacecraft Science (ISSN 2287-528X) (e-ISSN 2287-5271); 4; 3; 335-351
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  • 38
    Publication Date: 2019-07-20
    Description: In this project, work has been done in the field of conceptual design of experimental tiltrotors. The main tools that have been used are NDARC (NASA Design and Analysis of Rotorcraft) and SIMPLI-FLYD. NDARC is a conceptual design tool for rotorcraft, and it is used to find trim points under various flight conditions. SIMPLI-FLYD is an integrated collection of software tools that enables a flight dynamics and control assessment of the rotorcraft vehicle design generated from NDARC. Two different tiltrotors have been investigated. Initially, work was done with the Bell XV- 15 tiltrotor. NDARCs ability to correctly model the tiltwing transition between airplane mode and hover mode was looked into. In addition, data from old flight tests were compared to the NDARC output, to see how accurately performance could be predicted. After the XV-15 analysis, an NDRARC model of a novel tiltwing concept from Elytron Aircraft was written and analyzed together with SIMPLI-FLYD. Elytron 2S is an experimental tiltwing aircraft, consisting of a joined-wing design with a small central wing for the proprotor. An alternative approach to hover control is used, where the typical rotor hub and swash plate are substituted for linear actuators controlling pitch, yaw and roll. The objective with the analysis of Elytron is to obtain a more complete understanding of the maneuverability and possible performance of this alternative aircraft configuration.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN39203 , NASA/CR-2017-219456
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  • 39
    Publication Date: 2019-07-13
    Description: This paper presents a new adaptive control approach that involves a performance optimization objective. The control synthesis involves the design of a performance optimizing adaptive controller from a subset of control inputs. The resulting effect of the performance optimizing adaptive controller is to modify the initial reference model into a time-varying reference model which satisfies the performance optimization requirement obtained from an optimal control problem. The time-varying reference model modification is accomplished by the real-time solutions of the time-varying Riccati and Sylvester equations coupled with the least-squares parameter estimation of the sensitivities of the performance metric. The effectiveness of the proposed method is demonstrated by an application of maneuver load alleviation control for a flexible aircraft.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN42886 , Eighteenth Yale Workshop on Adaptive and Learning Systems; Jun 21, 2017 - Jun 23, 2017; New Haven, CT; United States
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  • 40
    Publication Date: 2019-07-13
    Description: The paper presents an on-board estimation, navigation and control architecture for multi-rotor drones flying in urban environment. It consists of adaptive algorithms to estimate vehicle's aerodynamic drag coefficients with respect to still air and the urban wind components along the flight trajectory, with guaranteed fast and reliable convergence to the true values; navigation algorithms to generate feasible trajectories between given way-points that take into account the estimated wind; and of control algorithms to track the generated trajectories as long as the vehicle retains sufficient number of functioning rotors capable of compensating for the estimated wind. All components of this on-board system are computationally effective and are intended for a real time implementation. The algorithms were tested in simulations.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN38102 , AIAA SciTech Forum; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
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  • 41
    Publication Date: 2019-07-13
    Description: While many widely accepted methods and techniques exist for validation and verification of traditional controllers, at this time no solutions have been accepted for Fuzzy Logic Controllers (FLCs). Due to the highly nonlinear nature of such systems, and the fact that developing a valid FLC does not require a mathematical model of the system, it is quite difficult to use conventional techniques to prove controller stability. Since safety-critical systems must be tested and verified to work as expected for all possible circumstances, the fact that FLC controllers cannot be tested to achieve such requirements poses limitations on the applications for such technology. Therefore, alternative methods for verification and validation of FLCs needs to be explored. In this study, a novel approach using formal verification methods to ensure the stability of a FLC is proposed. Main research challenges include specification of requirements for a complex system, conversion of a traditional FLC to a piecewise polynomial representation, and using a formal verification tool in a nonlinear solution space. Using the proposed architecture, the Fuzzy Logic Controller was found to always generate negative feedback, but inconclusive for Lyapunov stability.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN38074 , SciTech 2017; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
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  • 42
    Publication Date: 2019-07-13
    Description: Unlike basic Model Reference Adaptive Control (MRAC)l, Optimal Control Modification (OCM) has been shown to be a promising MRAC modification with robustness and analytical properties not present in other adaptive control methods. This paper presents an analysis of the OCM method, and how the asymptotic property of OCM is useful for analyzing and tuning the controller. We begin with a Lyapunov stability proof of an OCM controller having two adaptive gain terms, then the less conservative and easily analyzed OCM asymptotic property is presented. Two numerical examples are used to show how this property can accurately predict steady state stability and quantitative robustness in the presence of time delay, and relative to linear plant perturbations, and nominal Loop Transfer Recovery (LTR) tuning. The asymptotic property of the OCM controller is then used as an aid in tuning the controller applied to a large scale aeroservoelastic longitudinal aircraft model for flutter suppression. Control with OCM adaptive augmentation is shown to improve performance over that of the nominal non-adaptive controller when significant disparities exist between the controller/observer model and the true plant model.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN50278 , AIAA SciTech Forum; Jan 08, 2018 - Jan 12, 2018; Kissimmee, FL; United States
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  • 43
    Publication Date: 2019-07-13
    Description: This presentation is given at a NASA DLR (German Aerospace Center) meeting at NASA ARC on March 14, 2017. The presentation provides an overview of the Advanced Control and Evolvable Systems (ACES) group at NASA ARC and the research areas in UAS autonomy, stall recovery guidance, and flexible aircraft flight control.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN39958 , NASA/DLR Collaboration Meeting; Mar 14, 2017; Moffett Field, CA; United States
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  • 44
    Publication Date: 2019-07-13
    Description: This paper discusses the implementation and simulated performance of the FNPEG (Fully Numerical Predictor-corrector Entry Guidance) algorithm into GNC FSW (Guidance, Navigation, and Control Flight Software) for use in an autonomous re-entry vehicle. A few modifications to FNPEG are discussed that result in computational savings -- a change to the state propagator, and a modification to cross-range lateral logic. Finally, some Monte Carlo results are presented using a representative vehicle in both a high-fidelity 6-DOF (degree-of-freedom) sim as well as in a 3-DOF sim for independent validation.
    Keywords: Aircraft Stability and Control
    Type: JSC-CN-38080 , AIAA SciTech Forum 2017; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
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  • 45
    Publication Date: 2019-07-13
    Description: Link! is a multi-center NASA e ort to study the feasibility of multi-aircraft aerial docking systems. In these systems, a group of vehicles physically link to each other during flight to form a larger ensemble vehicle with increased aerodynamic performance and mission utility. This paper presents a potential field guidance algorithm for a group of multi-rotor vehicles to link to each other during flight. The linking is done in pairs. Each vehicle first selects a mate. Then the potential field is constructed with three rules: move towards the mate, avoid collisions with non-mates, and stay close to the rest of the group. Once a pair links, they are then considered to be a single vehicle. After each pair is linked, the process repeats until there is only one vehicle left. The paper contains simulation results for a system of 16 vehicles.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-27073 , AIAA Aviation and Aeronautics Forum and Exposition (AIAA Aviation 2017); Jun 05, 2017 - Jun 09, 2017; Denver, CO; United States
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  • 46
    Publication Date: 2019-07-13
    Description: The NASA Unmanned Aircraft System (UAS) Traffic Management (UTM) project is conducting research to enable civilian low-altitude airspace and UAS operations. A goal of this project is to develop probabilistic methods to quantify risk during failures and off nominal flight conditions. An important part of this effort is the reliable prediction of feasible trajectories during off-nominal events such as control failure, atmospheric upsets, or navigation anomalies that can cause large deviations from the intended flight path or extreme vehicle upsets beyond the normal flight envelope. Few examples of high-fidelity modeling and prediction of off-nominal behavior for small UAS (sUAS) vehicles exist, and modeling requirements for accurately predicting flight dynamics for out-of-envelope or failure conditions are essentially undefined. In addition, the broad range of sUAS aircraft configurations already being fielded presents a significant modeling challenge, as these vehicles are often very different from one another and are likely to possess dramatically different flight dynamics and resultant trajectories and may require different modeling approaches to capture off-nominal behavior. NASA has undertaken an extensive research effort to define sUAS flight dynamics modeling requirements and develop preliminary high fidelity six degree-of-freedom (6-DOF) simulations capable of more closely predicting off-nominal flight dynamics and trajectories. This research has included a literature review of existing sUAS modeling and simulation work as well as development of experimental testing methods to measure and model key components of propulsion, airframe and control characteristics. The ultimate objective of these efforts is to develop tools to support UTM risk analyses and for the real-time prediction of off-nominal trajectories for use in the UTM Risk Assessment Framework (URAF). This paper focuses on modeling and simulation efforts for a generic quad-rotor configuration typical of many commercial vehicles in use today. An overview of relevant off-nominal multi-rotor behaviors will be presented to define modeling goals and to identify the prediction capability lacking in simplified models of multi-rotor performance. A description of recent NASA wind tunnel testing of multi-rotor propulsion and airframe components will be presented illustrating important experimental and data acquisition methods, and a description of preliminary propulsion and airframe models will be presented. Lastly, examples of predicted off-nominal flight dynamics and trajectories from the simulation will be presented.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-25779 , 2017 AIAA Aviation and Aeronautics Forum; Jun 05, 2017 - Jun 09, 2017; Denver, CO; United States
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  • 47
    Publication Date: 2019-07-13
    Description: Aircraft dynamics characteristics can only be identified from flight data when the aircraft dynamics are excited sufficiently. A preliminary study was conducted into what types and levels of manual piloted control excitation would be required for accurate Real-Time Parameter IDentification (RTPID) results by commercial airline pilots. This includes assessing the practicality for the pilot to provide this excitation when cued, and to further understand if pilot inputs during various phases of flight provide sufficient excitation naturally. An operationally representative task was evaluated by 5 commercial airline pilots using the NASA Ice Contamination Effects Flight Training Device (ICEFTD). Results showed that it is practical to use manual pilot inputs only as a means of achieving good RTPID in all phases of flight and in flight turbulence conditions. All pilots were effective in satisfying excitation requirements when cued. Much of the time, cueing was not even necessary, as just performing the required task provided enough excitation for accurate RTPID estimation. Pilot opinion surveys reported that the additional control inputs required when prompted by the excitation cueing were easy to make, quickly mastered, and required minimal training.
    Keywords: Aircraft Stability and Control
    Type: NASA/CR-2017-219600
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  • 48
    Publication Date: 2019-07-13
    Description: No abstract available
    Keywords: Aircraft Stability and Control
    Type: M17-5798 , NESC GNC Technical Discipline Team Face-to-Face Meeting; Jan 23, 2017 - Jan 27, 2017; Mountain View, CA; United States
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  • 49
    Publication Date: 2019-07-13
    Description: Three different types of maneuvers were designed to separately quantify pitch rate and angle of attack rate contributions to the nondimensional aerodynamic pitching moment coefficient. These maneuvers combined pilot inputs and automatic multisine excitations, and were own with the subscale T-2 and Bat-4 airplanes using the NASA AirSTAR flight test facility. Stability and control derivatives, in particular C(sub mq) and C(sub m alpha(.)) were accurately estimated from the flight test data. These maneuvers can be performed with many types of aircraft, and the results can be used to increase simulation prediction fidelity and facilitate more accurate comparisons with wind tunnel experiments or numerical investigations.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-24686 , 2017 AIAA SciTech; Jan 09, 2017 - Jan 13, 2017; Dallas, TX; United States
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  • 50
    Publication Date: 2019-07-13
    Description: While many widely accepted methods and techniques exist for validation and verification of traditional controllers, at this time no solutions have been accepted for Fuzzy Logic Controllers (FLCs). Due to the highly nonlinear nature of such systems, and the fact that developing a valid FLC does not require a mathematical model of the system, it is quite difficult to use conventional techniques to prove controller stability. Since safety-critical systems must be tested and verified to work as expected for all possible circumstances, the fact that FLC controllers cannot be tested to achieve such requirements poses limitations on the applications for such technology. Therefore, alternative methods for verification and validation of FLCs needs to be explored. In this study, a novel approach using formal verification methods to ensure the stability of a FLC is proposed. Main research challenges include specification of requirements for a complex system, conversion of a traditional FLC to a piecewise polynomial representation, and using a formal verification tool in a nonlinear solution space. Using the proposed architecture, the Fuzzy Logic Controller was found to always generate negative feedback, but inconclusive for Lyapunov stability.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN32797 , SciTech 2017; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
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  • 51
    facet.materialart.
    Unknown
    In:  CASI
    Publication Date: 2019-08-26
    Description: An aircraft control structure for drag management includes a nozzle structure configured to exhaust a swirling fluid stream. A plurality of swirl vanes are positioned within the nozzle structure, and an actuation subsystem is configured to cause the plurality of swirl vanes to move from a deployed state to a non-deployed state. In the non-deployed state, the plurality of swirl vanes are substantially flush with the inner surface of the nozzle structure. In the deployed state, the plurality of swirl vanes produce the swirling fluid stream.
    Keywords: Aircraft Stability and Control
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  • 52
    Publication Date: 2019-07-13
    Description: As aircraft wings become much more flexible due to the use of light-weight composites material, adverse aerodynamics at off-design performance can result from changes in wing shapes due to aeroelastic deflections. Increased drag, hence increased fuel burn, is a potential consequence. Without means for aeroelastic compensation, the benefit of weight reduction from the use of light-weight material could be offset by less optimal aerodynamic performance at off-design flight conditions. Performance Adaptive Aeroelastic Wing (PAAW) technology can potentially address these technical challenges for future flexible wing transports. PAAW technology leverages multi-disciplinary solutions to maximize the aerodynamic performance payoff of future adaptive wing design, while addressing simultaneously operational constraints that can prevent the optimal aerodynamic performance from being realized. These operational constraints include reduced flutter margins, increased airframe responses to gust and maneuver loads, pilot handling qualities, and ride qualities. All of these constraints while seeking the optimal aerodynamic performance present themselves as a multi-objective flight control problem. The paper presents a multi-objective flight control approach based on a drag-cognizant optimal control method. A concept of virtual control, which was previously introduced, is implemented to address the pair-wise flap motion constraints imposed by the elastomer material. This method is shown to be able to satisfy the constraints. Real-time drag minimization control is considered to be an important consideration for PAAW technology. Drag minimization control has many technical challenges such as sensing and control. An initial outline of a real-time drag minimization control has already been developed and will be further investigated in the future. A simulation study of a multi-objective flight control for a flight path angle command with aeroelastic mode suppression and drag minimization demonstrates the effectiveness of the proposed solution. In-flight structural loads are also an important consideration. As wing flexibility increases, maneuver load and gust load responses can be significant and therefore can pose safety and flight control concerns. In this paper, we will extend the multi-objective flight control framework to include load alleviation control. The study will focus initially on maneuver load minimization control, and then subsequently will address gust load alleviation control in future work.
    Keywords: Aircraft Stability and Control
    Type: ARC-E-DAA-TN38210 , AIAA SciTech Forum; Jan 09, 2017 - Jan 13, 2017; Grapevine, TX; United States
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  • 53
    Publication Date: 2019-07-13
    Description: Aeroelastic stability and control derivatives for the X-56A Multi-Utility Technology Testbed (MUTT), in the stiff-wing configuration, were estimated from flight test data using the output-error method. Practical aspects of the analysis are discussed. The orthogonal phase-optimized multisine inputs provided excellent data information for aeroelastic modeling. Consistent parameter estimates were determined using output error in both the frequency and time domains. The frequency domain analysis converged faster and was less sensitive to starting values for the model parameters, which was useful for determining the aeroelastic model structure and obtaining starting values for the time domain analysis. Including a modal description of the structure from a finite element model reduced the complexity of the estimation problem and improved the modeling results. Effects of reducing the model order on the short period stability and control derivatives were investigated.
    Keywords: Aircraft Stability and Control
    Type: NF1676L-24692 , AIAA SciTech 2017; Jan 09, 2017 - Jan 13, 2017; Dallas, TX; United States
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  • 54
    Publication Date: 2016-01-20
    Description: The final identity and functional properties of a neuron are specified by terminal differentiation genes, which are controlled by specific motifs in compact regulatory regions. To determine how these sequences integrate inputs from transcription factors that specify cell types, we compared the regulatory mechanism of Drosophila Rhodopsin genes that are expressed in subsets of photoreceptors to that of phototransduction genes that are expressed broadly, in all photoreceptors. Both sets of genes share an 11-base pair (bp) activator motif. Broadly expressed genes contain a palindromic version that mediates expression in all photoreceptors. In contrast, each Rhodopsin exhibits characteristic single-bp substitutions that break the symmetry of the palindrome and generate activator or repressor motifs critical for restricting expression to photoreceptor subsets. Sensory neuron subtypes can therefore evolve through single-bp changes in short regulatory motifs, allowing the discrimination of a wide spectrum of stimuli.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rister, Jens -- Razzaq, Ansa -- Boodram, Pamela -- Desai, Nisha -- Tsanis, Cleopatra -- Chen, Hongtao -- Jukam, David -- Desplan, Claude -- K99EY023995/EY/NEI NIH HHS/ -- R01 EY13010/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1258-61. doi: 10.1126/science.aab3417.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Developmental Genetics, Department of Biology, New York University, 100 Washington Square East, New York, NY 10003-6688, USA. ; Center for Developmental Genetics, Department of Biology, New York University, 100 Washington Square East, New York, NY 10003-6688, USA. cd38@nyu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785491" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Pairing ; Drosophila Proteins/*genetics ; Drosophila melanogaster/genetics/growth & development ; *Gene Expression Regulation, Developmental ; Mutation ; Photoreceptor Cells, Invertebrate/*physiology ; Promoter Regions, Genetic/*genetics ; Rhodopsin/*genetics ; Transcription Factors/metabolism ; Vision, Ocular/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 55
    facet.materialart.
    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tang, Zhenwu -- Huang, Qifei -- Nie, Zhiqiang -- Yang, Yufei -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1176-7. doi: 10.1126/science.350.6265.1176-c.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Environmental Research Academy, North China Electric Power University, Beijing, 102206, China. ; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. huangqf@craes.org.cn. ; State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785469" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; *Birds
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 56
    Publication Date: 2016-01-20
    Description: Migratory species depend on a suite of interconnected sites. Threats to unprotected links in these chains of sites are driving rapid population declines of migrants around the world, yet the extent to which different parts of the annual cycle are protected remains unknown. We show that just 9% of 1451 migratory birds are adequately covered by protected areas across all stages of their annual cycle, in comparison with 45% of nonmigratory birds. This discrepancy is driven by protected area placement that does not cover the full annual cycle of migratory species, indicating that global efforts toward coordinated conservation planning for migrants are yet to bear fruit. Better-targeted investment and enhanced coordination among countries are needed to conserve migratory species throughout their migratory cycle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Runge, Claire A -- Watson, James E M -- Butchart, Stuart H M -- Hanson, Jeffrey O -- Possingham, Hugh P -- Fuller, Richard A -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1255-8. doi: 10.1126/science.aac9180.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Geography, Planning and Environmental Management, University of Queensland, Brisbane, QLD, 4072, Australia. National Center for Ecological Analysis and Synthesis (NCEAS), University of California, Santa Barbara, Santa Barbara, CA 93101, USA. claire.runge@uqconnect.edu.au. ; School of Geography, Planning and Environmental Management, University of Queensland, Brisbane, QLD, 4072, Australia. Global Conservation Program, Wildlife Conservation Society, New York, NY, USA. ; BirdLife International, Wellbrook Court, Cambridge CB3 0NA, UK. ; School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia. ; School of Biological Sciences, University of Queensland, Brisbane, QLD 4072, Australia. Department of Life Sciences, Imperial College London, Silwood Park, Ascot, Berkshire SL5 7PY, England, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785490" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Migration ; Animals ; *Birds ; Breeding ; *Conservation of Natural Resources ; Population Dynamics ; Seasons
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    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Underwood, Emily -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1188-90. doi: 10.1126/science.350.6265.1188.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785475" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/blood/genetics/*physiology ; Animals ; Biological Clocks/genetics/*physiology ; Biomarkers/blood/metabolism ; DNA/genetics ; DNA Methylation ; Epigenesis, Genetic ; Humans ; Mice ; Rats ; Telomere Homeostasis
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  • 58
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scheid, Johannes F -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1175. doi: 10.1126/science.aad7133.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Massachusetts General Hospital, Boston, MA 02114, USA. The Rockefeller University, New York, NY 10021, USA. fscheid@partners.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785466" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies, Monoclonal/genetics/immunology/isolation & purification ; Antibodies, Neutralizing/genetics/*immunology/isolation & purification ; B-Lymphocytes/*immunology ; Cell Separation/methods ; HIV Antibodies/genetics/*immunology/isolation & purification ; HIV Infections/*blood ; Humans ; Immunologic Memory ; Mice ; env Gene Products, Human Immunodeficiency Virus/*immunology
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  • 59
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hurtley, Stella -- Roberts, Leslie -- Ray, L Bryan -- Purnell, Beverly A -- Ash, Caroline -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1180-1. doi: 10.1126/science.350.6265.1180.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785472" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/*genetics ; Animals ; Health ; Humans ; Mitochondria/metabolism ; Stem Cells/physiology ; Telomere/*genetics ; *Telomere Homeostasis
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ford, Adam T -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1175. doi: 10.1126/science.aad7134.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Integrative Biology at the University of Guelph, Guelph, Ontario, Canada. adamford@uoguelph.ca.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785465" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Animals, Wild ; Antelopes ; *Dogs ; Endangered Species ; *Food Chain ; *Grassland ; *Herbivory ; Humans ; Plants
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  • 61
    Publication Date: 2016-01-20
    Description: Mitochondrial morphology is shaped by fusion and division of their membranes. Here, we found that adult myocardial function depends on balanced mitochondrial fusion and fission, maintained by processing of the dynamin-like guanosine triphosphatase OPA1 by the mitochondrial peptidases YME1L and OMA1. Cardiac-specific ablation of Yme1l in mice activated OMA1 and accelerated OPA1 proteolysis, which triggered mitochondrial fragmentation and altered cardiac metabolism. This caused dilated cardiomyopathy and heart failure. Cardiac function and mitochondrial morphology were rescued by Oma1 deletion, which prevented OPA1 cleavage. Feeding mice a high-fat diet or ablating Yme1l in skeletal muscle restored cardiac metabolism and preserved heart function without suppressing mitochondrial fragmentation. Thus, unprocessed OPA1 is sufficient to maintain heart function, OMA1 is a critical regulator of cardiomyocyte survival, and mitochondrial morphology and cardiac metabolism are intimately linked.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wai, Timothy -- Garcia-Prieto, Jaime -- Baker, Michael J -- Merkwirth, Carsten -- Benit, Paule -- Rustin, Pierre -- Ruperez, Francisco Javier -- Barbas, Coral -- Ibanez, Borja -- Langer, Thomas -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):aad0116. doi: 10.1126/science.aad0116.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Genetics, University of Cologne, 50674 Cologne, Germany. Max-Planck-Institute for Biology of Aging, Cologne, Germany. ; Myocardial Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain. ; Institute for Genetics, University of Cologne, 50674 Cologne, Germany. ; INSERM UMR 1141, Hopital Robert Debre, Paris, France. Universite Paris 7, Faculte de Medecine Denis Diderot, Paris, France. ; Centre for Metabolomics and Bioanalysis (CEMBIO), Faculty of Pharmacy, Universidad San Pablo CEU, Campus Monteprincipe, Boadilla del Monte, 28668 Madrid, Spain. ; Myocardial Pathophysiology Area, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain. Department of Cardiology, Instituto de Investigacion Sanitaria (IIS), Fundacion Jimenez Diaz Hospital, Madrid, Spain. thomas.langer@uni-koeln.de bibanez@cnic.es. ; Institute for Genetics, University of Cologne, 50674 Cologne, Germany. Max-Planck-Institute for Biology of Aging, Cologne, Germany. Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany. Center for Molecular Medicine (CMMC), University of Cologne, Cologne, Germany. thomas.langer@uni-koeln.de bibanez@cnic.es.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785494" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cardiomyopathy, Dilated/genetics/metabolism/pathology ; Diet, High-Fat ; Embryonic Development ; Female ; GTP Phosphohydrolases ; Gene Deletion ; Heart/embryology ; Heart Failure/genetics/*metabolism/pathology ; Male ; Metalloendopeptidases/genetics ; Metalloproteases/genetics/metabolism ; Mice ; Mice, Knockout ; Mitochondria, Heart/*metabolism/ultrastructure ; *Mitochondrial Degradation ; *Mitochondrial Dynamics ; Mitochondrial Proteins/genetics/metabolism ; Muscle, Skeletal/enzymology ; Myocardium/*metabolism/pathology ; Myocytes, Cardiac/enzymology/pathology ; Proteolysis
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: Mitochondria generate adenosine 5'-triphosphate (ATP) and are a source of potentially toxic reactive oxygen species (ROS). It has been suggested that the gradual mitochondrial dysfunction that is observed to accompany aging could in fact be causal to the aging process. Here we review findings that suggest that age-dependent mitochondrial dysfunction is not sufficient to limit life span. Furthermore, mitochondrial ROS are not always deleterious and can even stimulate pro-longevity pathways. Thus, mitochondrial dysfunction plays a complex role in regulating longevity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Ying -- Hekimi, Siegfried -- MOP-114891/Canadian Institutes of Health Research/Canada -- MOP-123295/Canadian Institutes of Health Research/Canada -- MOP-97869/Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1204-7. doi: 10.1126/science.aac4357.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, McGill University, Montreal, Quebec H3A 1B1, Canada. ; Department of Biology, McGill University, Montreal, Quebec H3A 1B1, Canada. siegfried.hekimi@mcgill.ca.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785479" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphate/*metabolism ; Animals ; Caenorhabditis elegans Proteins/genetics ; Electron Transport/genetics ; Electron Transport Complex III/genetics ; Longevity/genetics/*physiology ; Mice ; Mice, Knockout ; Mitochondria/genetics/*metabolism ; Point Mutation ; Reactive Oxygen Species/*metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cleary, Allison S -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1174-5. doi: 10.1126/science.aad7103.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pennsylvania State University College of Medicine, Hershey PA 17078, USA. acleary@hmc.psu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785463" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/genetics/metabolism/*pathology ; Clone Cells/metabolism/pathology ; Female ; Mammary Neoplasms, Experimental/genetics/metabolism/*pathology ; Mice ; Neoplasms, Basal Cell/genetics/metabolism/pathology ; Wnt1 Protein/genetics/*metabolism ; ras Proteins/genetics/metabolism
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  • 64
    Publication Date: 2016-01-20
    Description: Age is the greatest risk factor for nearly every major cause of mortality in developed nations. Despite this, most biomedical research focuses on individual disease processes without much consideration for the relationships between aging and disease. Recent discoveries in the field of geroscience, which aims to explain biological mechanisms of aging, have provided insights into molecular processes that underlie biological aging and, perhaps more importantly, potential interventions to delay aging and promote healthy longevity. Here we describe some of these advances, along with efforts to move geroscience from the bench to the clinic. We also propose that greater emphasis should be placed on research into basic aging processes, because interventions that slow aging will have a greater effect on quality of life compared with disease-specific approaches.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaeberlein, Matt -- Rabinovitch, Peter S -- Martin, George M -- P30AG013280/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1191-3. doi: 10.1126/science.aad3267.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of Washington, Seattle, WA 98195, USA. kaeber@uw.edu. ; Department of Pathology, University of Washington, Seattle, WA 98195, USA. ; Department of Pathology, University of Washington, Seattle, WA 98195, USA. Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785476" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Diet ; Exercise ; Geriatrics/*trends ; *Health ; Humans ; Mortality ; Preventive Medicine/*trends ; Risk Factors ; TOR Serine-Threonine Kinases/antagonists & inhibitors ; Translational Medical Research/trends
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1186-7. doi: 10.1126/science.350.6265.1186.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785474" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Caenorhabditis elegans/genetics/physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Caloric Restriction ; Death ; Humans ; Hydra/genetics/physiology ; Longevity/genetics/*physiology ; Mice ; Mutation ; Phosphatidylinositol 3-Kinases/genetics/physiology
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  • 66
    Publication Date: 2016-01-20
    Description: In developing hearts, changes in the cardiac metabolic milieu during the perinatal period redirect mitochondrial substrate preference from carbohydrates to fatty acids. Mechanisms responsible for this mitochondrial plasticity are unknown. Here, we found that PINK1-Mfn2-Parkin-mediated mitophagy directs this metabolic transformation in mouse hearts. A mitofusin (Mfn) 2 mutant lacking PINK1 phosphorylation sites necessary for Parkin binding (Mfn2 AA) inhibited mitochondrial Parkin translocation, suppressing mitophagy without impairing mitochondrial fusion. Cardiac Parkin deletion or expression of Mfn2 AA from birth, but not after weaning, prevented postnatal mitochondrial maturation essential to survival. Five-week-old Mfn2 AA hearts retained a fetal mitochondrial transcriptional signature without normal increases in fatty acid metabolism and mitochondrial biogenesis genes. Myocardial fatty acylcarnitine levels and cardiomyocyte respiration induced by palmitoylcarnitine were concordantly depressed. Thus, instead of transcriptional reprogramming, fetal cardiomyocyte mitochondria undergo perinatal Parkin-mediated mitophagy and replacement by mature adult mitochondria. Mitophagic mitochondrial removal underlies developmental cardiomyocyte mitochondrial plasticity and metabolic transitioning of perinatal hearts.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747105/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4747105/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gong, Guohua -- Song, Moshi -- Csordas, Gyorgy -- Kelly, Daniel P -- Matkovich, Scot J -- Dorn, Gerald W 2nd -- HL058493/HL/NHLBI NIH HHS/ -- HL108943/HL/NHLBI NIH HHS/ -- HL122124/HL/NHLBI NIH HHS/ -- HL128071/HL/NHLBI NIH HHS/ -- HL59888/HL/NHLBI NIH HHS/ -- R01 HL058493/HL/NHLBI NIH HHS/ -- R01 HL059888/HL/NHLBI NIH HHS/ -- R01 HL108943/HL/NHLBI NIH HHS/ -- R01 HL128071/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):aad2459. doi: 10.1126/science.aad2459. Epub 2015 Dec 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Pharmacogenomics, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO, USA. ; Department of Pathology, Anatomy, and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA. ; Center for Metabolic Origins of Disease, Cardiovascular Metabolism Program, Sanford Burnham Prebys Medical Discovery Institute, Orlando, FL, USA. ; Center for Pharmacogenomics, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO, USA. gdorn@dom.wustl.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785495" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cellular Reprogramming ; GTP Phosphohydrolases/genetics/metabolism ; Heart/*embryology ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mitochondria, Heart/metabolism/*physiology/ultrastructure ; Mitochondrial Degradation/genetics/*physiology ; Mitochondrial Dynamics ; Myocardium/*metabolism/ultrastructure ; Myocytes, Cardiac/metabolism/ultrastructure ; Protein Kinases/metabolism ; Ubiquitin-Protein Ligases/genetics/*metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: Research into stem cells and aging aims to understand how stem cells maintain tissue health, what mechanisms ultimately lead to decline in stem cell function with age, and how the regenerative capacity of somatic stem cells can be enhanced to promote healthy aging. Here, we explore the effects of aging on stem cells in different tissues. Recent research has focused on the ways that genetic mutations, epigenetic changes, and the extrinsic environmental milieu influence stem cell functionality over time. We describe each of these three factors, the ways in which they interact, and how these interactions decrease stem cell health over time. We are optimistic that a better understanding of these changes will uncover potential strategies to enhance stem cell function and increase tissue resiliency into old age.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goodell, Margaret A -- Rando, Thomas A -- P01 AG036695/AG/NIA NIH HHS/ -- R01 AG047820/AG/NIA NIH HHS/ -- R01 AR062185/AR/NIAMS NIH HHS/ -- R37 AG023806/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1199-204. doi: 10.1126/science.aab3388.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stem Cells and Regenerative Medicine Center, Center for Cell and Gene Therapy, and Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA. goodell@bcm.edu rando@stanford.edu. ; Glenn Center for the Biology of Aging and Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA, and Center for Regenerative Rehabilitation, Veterans Administration Palo Alto Health Care System, Palo Alto, CA 94304, USA. goodell@bcm.edu rando@stanford.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785478" target="_blank"〉PubMed〈/a〉
    Keywords: Adult Stem Cells/*physiology ; Aging/*physiology ; Animals ; Cell Aging ; Epigenesis, Genetic ; Genetic Drift ; *Health ; Humans ; Mice ; Mutation ; Organ Specificity ; Selection, Genetic
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gottlieb, Roberta A -- Bernstein, Daniel -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1162-3. doi: 10.1126/science.aad8222.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA. roberta.gottlieb@cshs.org. ; Department of Pediatrics, Stanford University, Palo Alto, CA 94304, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785456" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Heart/*embryology ; Heart Failure/*metabolism ; Male ; Mitochondria, Heart/*metabolism/*physiology ; Mitochondrial Degradation/*physiology ; *Mitochondrial Dynamics ; Myocardium/*metabolism ; Ubiquitin-Protein Ligases/*metabolism
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stokstad, Erik -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1144-7. doi: 10.1126/science.350.6265.1144.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785454" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Breeding ; Cattle ; Europe ; *Extinction, Biological
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Grimm, David -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1182-5. doi: 10.1126/science.350.6265.1182.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785473" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Animals ; Body Weight ; Cats ; Dogs ; Humans ; *Longevity ; Pets/*physiology
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kintisch, Eli -- New York, N.Y. -- Science. 2015 Dec 4;350(6265):1148-51. doi: 10.1126/science.350.6265.1148. Epub 2015 Dec 3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26785455" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bison ; *Conservation of Natural Resources ; *Herbivory ; *Parks, Recreational ; *Permafrost ; Siberia ; *Taiga
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-04-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kupferschmidt, Kai -- New York, N.Y. -- Science. 2016 Apr 8;352(6282):128-9. doi: 10.1126/science.352.6282.128. Epub 2016 Apr 7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27124428" target="_blank"〉PubMed〈/a〉
    Keywords: Aedes/virology ; Angola/epidemiology ; Animals ; Chick Embryo ; Disease Outbreaks/*prevention & control ; Humans ; Vaccination/statistics & numerical data ; World Health Organization ; Yellow Fever/*epidemiology/*prevention & control ; Yellow Fever Vaccine/*administration & dosage
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-03-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kupferschmidt, Kai -- New York, N.Y. -- Science. 2016 Mar 11;351(6278):1143. doi: 10.1126/science.351.6278.1143.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26965608" target="_blank"〉PubMed〈/a〉
    Keywords: Acinetobacter/*growth & development ; Animals ; *Death ; Humans ; Mice ; Moraxellaceae/*growth & development ; Rhizobiaceae/*growth & development ; Time Factors
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  • 74
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-04-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kupferschmidt, Kai -- New York, N.Y. -- Science. 2016 Apr 22;352(6284):391-2. doi: 10.1126/science.352.6284.391. Epub 2016 Apr 21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27102452" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Communicable Diseases/diagnosis/*epidemiology/etiology ; Echinococcosis/diagnosis/epidemiology ; Echinococcus/isolation & purification ; *Emigration and Immigration ; Europe ; Humans ; Mass Screening ; Methicillin Resistance ; Methicillin-Resistant Staphylococcus aureus/isolation & purification ; *Refugees
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-03-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwartz, Gary J -- DK 020541/DK/NIDDK NIH HHS/ -- DK 026687/DK/NIDDK NIH HHS/ -- DK 105441/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2016 Mar 18;351(6279):1268-9. doi: 10.1126/science.aaf5216. Epub 2016 Mar 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Medicine & Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA. gary.schwartz@einstein.yu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26989239" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Energy Metabolism/*physiology ; Feeding Behavior/*physiology ; Hyperphagia/*genetics ; Male ; N-Acetylglucosaminyltransferases/*physiology ; Paraventricular Hypothalamic Nucleus/*physiology
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  • 76
    Publication Date: 2016-02-26
    Description: In most animal species, juvenile growth is marked by an exponential gain in body weight and size. Here we show that the microbiota of infant mice sustains both weight gain and longitudinal growth when mice are fed a standard laboratory mouse diet or a nutritionally depleted diet. We found that the intestinal microbiota interacts with the somatotropic hormone axis to drive systemic growth. Using monocolonized mouse models, we showed that selected lactobacilli promoted juvenile growth in a strain-dependent manner that recapitulated the microbiota's effect on growth and the somatotropic axis. These findings show that the host's microbiota supports juvenile growth. Moreover, we discovered that lactobacilli strains buffered the adverse effects of chronic undernutrition on the postnatal growth of germ-free mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schwarzer, Martin -- Makki, Kassem -- Storelli, Gilles -- Machuca-Gayet, Irma -- Srutkova, Dagmar -- Hermanova, Petra -- Martino, Maria Elena -- Balmand, Severine -- Hudcovic, Tomas -- Heddi, Abdelaziz -- Rieusset, Jennifer -- Kozakova, Hana -- Vidal, Hubert -- Leulier, Francois -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):854-7. doi: 10.1126/science.aad8588.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Genomique Fonctionnelle de Lyon, Universite de Lyon, Ecole Normale Superieure de Lyon, Centre National de la Recherche Scientifique, Universite Claude Bernard Lyon 1, Unite Mixte de Recherche 5242, 46 Allee d'Italie, 69364 Lyon Cedex 07, France. Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Novy Hradek, Czech Republic. ; Institut de Genomique Fonctionnelle de Lyon, Universite de Lyon, Ecole Normale Superieure de Lyon, Centre National de la Recherche Scientifique, Universite Claude Bernard Lyon 1, Unite Mixte de Recherche 5242, 46 Allee d'Italie, 69364 Lyon Cedex 07, France. Laboratoire CarMeN, Universite Lyon 1, Unite Mixte de Recherche INSERM U-1060 et INRA U-1397, Faculte de Medecine Lyon-Sud, Chemin du Grand Revoyet, 69600 Oullins, France. ; Institut de Genomique Fonctionnelle de Lyon, Universite de Lyon, Ecole Normale Superieure de Lyon, Centre National de la Recherche Scientifique, Universite Claude Bernard Lyon 1, Unite Mixte de Recherche 5242, 46 Allee d'Italie, 69364 Lyon Cedex 07, France. ; Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Novy Hradek, Czech Republic. ; UMR203 BF2I, Biologie Fonctionnelle Insectes et Interactions, Universite de Lyon, INRA, INSA-Lyon, F-69621 Villeurbanne, France. ; Laboratoire CarMeN, Universite Lyon 1, Unite Mixte de Recherche INSERM U-1060 et INRA U-1397, Faculte de Medecine Lyon-Sud, Chemin du Grand Revoyet, 69600 Oullins, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912894" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Weight/*physiology ; Diet ; Femur/growth & development ; Gastrointestinal Microbiome/*physiology ; Lactobacillus plantarum/*physiology ; Malnutrition/*microbiology/*physiopathology ; Mice ; Mice, Inbred BALB C ; Weight Gain/*physiology
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  • 77
    Publication Date: 2016-01-23
    Description: Mono-ubiquitination of Fancd2 is essential for repairing DNA interstrand cross-links (ICLs), but the underlying mechanisms are unclear. The Fan1 nuclease, also required for ICL repair, is recruited to ICLs by ubiquitinated (Ub) Fancd2. This could in principle explain how Ub-Fancd2 promotes ICL repair, but we show that recruitment of Fan1 by Ub-Fancd2 is dispensable for ICL repair. Instead, Fan1 recruitment--and activity--restrains DNA replication fork progression and prevents chromosome abnormalities from occurring when DNA replication forks stall, even in the absence of ICLs. Accordingly, Fan1 nuclease-defective knockin mice are cancer-prone. Moreover, we show that a Fan1 variant in high-risk pancreatic cancers abolishes recruitment by Ub-Fancd2 and causes genetic instability without affecting ICL repair. Therefore, Fan1 recruitment enables processing of stalled forks that is essential for genome stability and health.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4770513/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lachaud, Christophe -- Moreno, Alberto -- Marchesi, Francesco -- Toth, Rachel -- Blow, J Julian -- Rouse, John -- WT096598MA/Wellcome Trust/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):846-9. doi: 10.1126/science.aad5634. Epub 2016 Jan 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; Centre for Gene Regulation and Expression, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. ; School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow, Bearsden Road, Glasgow G61 1QH, UK. ; Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, Sir James Black Centre, University of Dundee, Dundee DD1 5EH, Scotland, UK. j.rouse@dundee.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26797144" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Chromosome Aberrations ; DNA Repair ; *DNA Replication ; Endodeoxyribonucleases/genetics/*metabolism ; Fanconi Anemia Complementation Group D2 Protein/genetics/*metabolism ; Female ; Gene Knock-In Techniques ; Genetic Predisposition to Disease ; Genomic Instability/*genetics ; Liver Neoplasms/genetics/pathology ; Lung Neoplasms/genetics/pathology ; Lymphoma/genetics/pathology ; Male ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Pancreatic Neoplasms/*genetics ; *Ubiquitination
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  • 78
    Publication Date: 2016-03-19
    Description: Maintaining energy homeostasis is crucial for the survival and health of organisms. The brain regulates feeding by responding to dietary factors and metabolic signals from peripheral organs. It is unclear how the brain interprets these signals. O-GlcNAc transferase (OGT) catalyzes the posttranslational modification of proteins by O-GlcNAc and is regulated by nutrient access. Here, we show that acute deletion of OGT from alphaCaMKII-positive neurons in adult mice caused obesity from overeating. The hyperphagia derived from the paraventricular nucleus (PVN) of the hypothalamus, where loss of OGT was associated with impaired satiety. These results identify O-GlcNAcylation in alphaCaMKII neurons of the PVN as an important molecular mechanism that regulates feeding behavior.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817221/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4817221/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lagerlof, Olof -- Slocomb, Julia E -- Hong, Ingie -- Aponte, Yeka -- Blackshaw, Seth -- Hart, Gerald W -- Huganir, Richard L -- N01-HV-00240/HV/NHLBI NIH HHS/ -- P01 HL107153/HL/NHLBI NIH HHS/ -- P01HL107153/HL/NHLBI NIH HHS/ -- R01 DK061671/DK/NIDDK NIH HHS/ -- R01 NS036715/NS/NINDS NIH HHS/ -- R01DK6167/DK/NIDDK NIH HHS/ -- R01NS036715/NS/NINDS NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2016 Mar 18;351(6279):1293-6. doi: 10.1126/science.aad5494.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; National Institute on Drug Abuse + National Institutes of Health/Johns Hopkins University Graduate Partnership Program, Baltimore, MD 21224, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Intramural Research Program, Neuronal Circuits and Behavior Unit, National Institute on Drug Abuse, Baltimore, MD 21224, USA. ; Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. ; Solomon H. Snyder Department of Neuroscience, Kavli Neuroscience Discovery Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. rhuganir@jhmi.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26989246" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylglucosamine/metabolism ; Animals ; Calcium-Calmodulin-Dependent Protein Kinase Type 2/metabolism ; Energy Metabolism/genetics/*physiology ; Feeding Behavior/*physiology ; Gene Deletion ; Homeostasis/genetics ; Hyperphagia/*genetics ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; N-Acetylglucosaminyltransferases/genetics/*physiology ; Neurons/enzymology ; Obesity/genetics ; Paraventricular Hypothalamic Nucleus/cytology/enzymology/*physiology ; Protein Processing, Post-Translational ; Satiety Response/physiology
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  • 79
    Publication Date: 2016-04-02
    Description: When animals encounter conflict they initiate and escalate aggression to establish and maintain a social hierarchy. The neural mechanisms by which animals resolve fighting behaviors to determine such social hierarchies remain unknown. We identified two subregions of the dorsal habenula (dHb) in zebrafish that antagonistically regulate the outcome of conflict. The losing experience reduced neural transmission in the lateral subregion of dHb (dHbL)-dorsal/intermediate interpeduncular nucleus (d/iIPN) circuit. Silencing of the dHbL or medial subregion of dHb (dHbM) caused a stronger predisposition to lose or win a fight, respectively. These results demonstrate that the dHbL and dHbM comprise a dual control system for conflict resolution of social aggression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chou, Ming-Yi -- Amo, Ryunosuke -- Kinoshita, Masae -- Cherng, Bor-Wei -- Shimazaki, Hideaki -- Agetsuma, Masakazu -- Shiraki, Toshiyuki -- Aoki, Tazu -- Takahoko, Mikako -- Yamazaki, Masako -- Higashijima, Shin-ichi -- Okamoto, Hitoshi -- New York, N.Y. -- Science. 2016 Apr 1;352(6281):87-90. doi: 10.1126/science.aac9508.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Developmental Gene Regulation, RIKEN Brain Science Institute, Saitama 351-0198, Japan. ; Laboratory for Developmental Gene Regulation, RIKEN Brain Science Institute, Saitama 351-0198, Japan. Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Tokyo 153-8902, Japan. ; Laboratory for Neural Computation and Adaptation, RIKEN Brain Science Institute, Saitama 351-0198, Japan. ; National Institutes of Natural Sciences, Okazaki Institute for Integrative Bioscience, National Institute for Physiological Sciences, Aichi 444-8787, Japan. ; Laboratory for Developmental Gene Regulation, RIKEN Brain Science Institute, Saitama 351-0198, Japan. Department of Life Sciences, Graduate School of Arts and Sciences, University of Tokyo, Tokyo 153-8902, Japan. Laboratory for Molecular Brain Science, Department of Life Science and Medical Bioscience, Waseda University, Tokyo 162-8430, Japan. hitoshi@brain.riken.jp.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27034372" target="_blank"〉PubMed〈/a〉
    Keywords: Aggression/*physiology ; Animals ; *Conflict (Psychology) ; Habenula/*physiology ; Hierarchy, Social ; Interpeduncular Nucleus/physiology ; *Negotiating ; Synaptic Transmission ; Zebrafish
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  • 80
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Larson, Christina -- New York, N.Y. -- Science. 2016 Jan 22;351(6271):323-4. doi: 10.1126/science.351.6271.323.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26797990" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Shells ; Animals ; Art ; *Bivalvia ; China ; *Endangered Species
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  • 81
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Service, Robert F -- New York, N.Y. -- Science. 2016 Jan 22;351(6271):326-7. doi: 10.1126/science.351.6271.326.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26797993" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; Birds ; *Carps ; Cattle ; *Environmental Restoration and Remediation ; Herbivory ; *Introduced Species ; Oregon ; Violence
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Landolt, Hans-Peter -- Holst, Sebastian C -- New York, N.Y. -- Science. 2016 Apr 29;352(6285):517-8. doi: 10.1126/science.aaf8178.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. Zurich Center for Interdisciplinary Sleep Research, University of Zurich, Zurich, Switzerland. landolt@pharma.uzh.ch. ; Institute of Pharmacology and Toxicology, University of Zurich, Zurich, Switzerland. Zurich Center for Interdisciplinary Sleep Research, University of Zurich, Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27126024" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cations/*metabolism ; Cerebral Cortex/*physiology ; Male ; Potassium/*metabolism ; Sleep/*physiology ; Wakefulness/*physiology
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  • 83
    Publication Date: 2016-04-23
    Description: Ecological character displacement is a process of morphological divergence that reduces competition for limited resources. We used genomic analysis to investigate the genetic basis of a documented character displacement event in Darwin's finches on Daphne Major in the Galapagos Islands: The medium ground finch diverged from its competitor, the large ground finch, during a severe drought. We discovered a genomic region containing the HMGA2 gene that varies systematically among Darwin's finch species with different beak sizes. Two haplotypes that diverged early in the radiation were involved in the character displacement event: Genotypes associated with large beak size were at a strong selective disadvantage in medium ground finches (selection coefficient s = 0.59). Thus, a major locus has apparently facilitated a rapid ecological diversification in the adaptive radiation of Darwin's finches.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamichhaney, Sangeet -- Han, Fan -- Berglund, Jonas -- Wang, Chao -- Almen, Markus Sallman -- Webster, Matthew T -- Grant, B Rosemary -- Grant, Peter R -- Andersson, Leif -- New York, N.Y. -- Science. 2016 Apr 22;352(6284):470-4. doi: 10.1126/science.aad8786.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden. ; Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA. ; Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden. Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Uppsala, Sweden. Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA. leif.andersson@imbim.uu.se.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27102486" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beak/*anatomy & histology ; Body Size/genetics ; *Droughts ; Ecuador ; Female ; Finches/*anatomy & histology/classification/*genetics ; Genomics ; Genotype ; HMGA2 Protein/genetics ; Haplotypes ; Organ Size/genetics ; Phylogeny ; *Quantitative Trait Loci ; *Selection, Genetic
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  • 84
    Publication Date: 2016-03-26
    Description: Shadlen et al's Comment focuses on extrapolations of our results that were not implied or asserted in our Report. They discuss alternate analyses of average firing rates in other tasks, the relationship between neural activity and behavior, and possible extensions of the standard models we examined. Although interesting to contemplate, these points are not germane to the findings of our Report: that stepping dynamics provided a better statistical description of lateral intraparietal area spike trains than diffusion-to-bound dynamics for a majority of neurons.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Latimer, Kenneth W -- Yates, Jacob L -- Meister, Miriam L R -- Huk, Alexander C -- Pillow, Jonathan W -- New York, N.Y. -- Science. 2016 Mar 25;351(6280):1406. doi: 10.1126/science.aad3596.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. ; Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA. ; Center for Perceptual Systems, The University of Texas at Austin, Austin, TX 78712, USA. Institute for Neuroscience, The University of Texas at Austin, Austin, TX 78712, USA. Department of Psychology, The University of Texas at Austin, Austin, TX 78712, USA. Princeton Neuroscience Institute and Department of Psychology, Princeton University, Princeton, NJ 08544, USA. pillow@princeton.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27013724" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Choice Behavior/*physiology ; Decision Making/*physiology ; Male ; Parietal Lobe/*physiology
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  • 85
    Publication Date: 2016-03-26
    Description: Latimeret al (Reports, 10 July 2015, p. 184) claim that during perceptual decision formation, parietal neurons undergo one-time, discrete steps in firing rate instead of gradual changes that represent the accumulation of evidence. However, that conclusion rests on unsubstantiated assumptions about the time window of evidence accumulation, and their stepping model cannot explain existing data as effectively as evidence-accumulation models.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shadlen, Michael N -- Kiani, Roozbeh -- Newsome, William T -- Gold, Joshua I -- Wolpert, Daniel M -- Zylberberg, Ariel -- Ditterich, Jochen -- de Lafuente, Victor -- Yang, Tianming -- Roitman, Jamie -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Mar 25;351(6280):1406. doi: 10.1126/science.aad3242.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute (HHMI) and Department of Neuroscience, Columbia University, New York, NY, USA. shadlen@columbia.edu. ; Center for Neural Science, New York University, New York, NY, USA. ; HHMI and Stanford University, Stanford, CA, USA. ; Department of Neuroscience, University of Pennsylvania, Philadelphia, PA, USA. ; Department of Engineering, University of Cambridge, Cambridge, UK. ; HHMI and Department of Neuroscience, Columbia University, New York, NY, USA. ; Center for Neuroscience and Department of Neurobiology, Physiology, and Behavior, University of California, Davis, CA, USA. ; Institute for Neuroscience, National Autonomous University of Mexico, Queretaro, Mexico. ; Institute of Neuroscience, Chinese Academy of Sciences, Shanghai, China. ; Department of Psychology, University of Illinois at Chicago, Chicago, IL, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27013723" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Choice Behavior/*physiology ; Decision Making/*physiology ; Male ; Parietal Lobe/*physiology
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  • 86
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Servick, Kelly -- New York, N.Y. -- Science. 2016 Jan 1;351(6268):15. doi: 10.1126/science.351.6268.15.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721984" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; California ; Cell Differentiation ; Clinical Trials as Topic ; Drug Industry ; Embryonic Stem Cells/cytology/*transplantation ; Financing, Organized ; Humans ; Photoreceptor Cells/physiology ; Rats ; Regenerative Medicine/*economics/*trends ; Retina/cytology/physiology ; Stem Cell Research/*economics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 87
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, Andrew -- New York, N.Y. -- Science. 2016 Jan 8;351(6269):111-2. doi: 10.1126/science.351.6269.111.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26744387" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Drinking Water ; *Droughts ; Humans ; Indian Ocean ; Iraq ; Mesopotamia ; Salinity ; Warfare ; Water Resources/*supply & distribution ; *Wetlands
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 88
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Jon -- New York, N.Y. -- Science. 2016 Jan 1;351(6268):16-9. doi: 10.1126/science.351.6268.16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721985" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomedical Research/*economics ; Communicable Disease Control/*economics ; Financial Management ; Humans ; National Institutes of Health (U.S.) ; United States ; Vaccines/*economics
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  • 89
    Publication Date: 2016-02-27
    Description: Oocytes differentiate in diverse species by receiving organelles and cytoplasm from sister germ cells while joined in germline cysts or syncytia. Mouse primordial germ cells form germline cysts, but the role of cysts in oogenesis is unknown. We find that mouse germ cells receive organelles from neighboring cyst cells and build a Balbiani body to become oocytes, whereas nurselike germ cells die. Organelle movement, Balbiani body formation, and oocyte fate determination are selectively blocked by low levels of microtubule-dependent transport inhibitors. Membrane breakdown within the cyst and an apoptosis-like process are associated with organelle transfer into the oocyte, events reminiscent of nurse cell dumping in Drosophila We propose that cytoplasmic and organelle transport plays an evolutionarily conserved and functionally important role in mammalian oocyte differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lei, Lei -- Spradling, Allan C -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Apr 1;352(6281):95-9. doi: 10.1126/science.aad2156. Epub 2016 Feb 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute Research Laboratories, Department of Embryology, Carnegie Institution for Science, 3520 San Martin Drive, Baltimore, MD 21218, USA. spradling@ciwemb.edu leile@med.umich.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26917595" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Biological Evolution ; Cytoplasm/physiology/ultrastructure ; Female ; Giant Cells/*cytology ; Mice ; Microtubules/drug effects/physiology ; Oocytes/*cytology ; *Oogenesis ; Organelles/*physiology
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  • 90
    Publication Date: 2016-01-30
    Description: Cystic fibrosis (CF) is caused by mutations in the gene that encodes the cystic fibrosis transmembrane conductance regulator (CFTR) anion channel. In humans and pigs, the loss of CFTR impairs respiratory host defenses, causing airway infection. But CF mice are spared. We found that in all three species, CFTR secreted bicarbonate into airway surface liquid. In humans and pigs lacking CFTR, unchecked H(+) secretion by the nongastric H(+)/K(+) adenosine triphosphatase (ATP12A) acidified airway surface liquid, which impaired airway host defenses. In contrast, mouse airways expressed little ATP12A and secreted minimal H(+); consequently, airway surface liquid in CF and non-CF mice had similar pH. Inhibiting ATP12A reversed host defense abnormalities in human and pig airways. Conversely, expressing ATP12A in CF mouse airways acidified airway surface liquid, impaired defenses, and increased airway bacteria. These findings help explain why CF mice are protected from infection and nominate ATP12A as a potential therapeutic target for CF.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shah, Viral S -- Meyerholz, David K -- Tang, Xiao Xiao -- Reznikov, Leah -- Abou Alaiwa, Mahmoud -- Ernst, Sarah E -- Karp, Philip H -- Wohlford-Lenane, Christine L -- Heilmann, Kristopher P -- Leidinger, Mariah R -- Allen, Patrick D -- Zabner, Joseph -- McCray, Paul B Jr -- Ostedgaard, Lynda S -- Stoltz, David A -- Randak, Christoph O -- Welsh, Michael J -- 5T32GM007337/GM/NIGMS NIH HHS/ -- DK054759/DK/NIDDK NIH HHS/ -- F30 HL123239/HL/NHLBI NIH HHS/ -- F30HL123239/HL/NHLBI NIH HHS/ -- HL091842/HL/NHLBI NIH HHS/ -- HL117744/HL/NHLBI NIH HHS/ -- HL51670/HL/NHLBI NIH HHS/ -- K08HL097071/HL/NHLBI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Jan 29;351(6272):503-7. doi: 10.1126/science.aad5589.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Iowa, Iowa City, IA 52242, USA. Department of Molecular Physiology and Biophysics, Pappajohn Biomedical Institute, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA. ; Department of Pathology, University of Iowa, Iowa City, IA 52242, USA. ; Department of Medicine, University of Iowa, Iowa City, IA 52242, USA. Howard Hughes Medical Institute, University of Iowa, Iowa City, IA 52242, USA. ; Department of Medicine, University of Iowa, Iowa City, IA 52242, USA. ; Department of Pediatrics University of Iowa, Iowa City, IA 52242, USA. ; Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA. ; Department of Pediatrics University of Iowa, Iowa City, IA 52242, USA. Department of Microbiology, University of Iowa, Iowa City, IA 52242, USA. ; Department of Medicine, University of Iowa, Iowa City, IA 52242, USA. Department of Molecular Physiology and Biophysics, Pappajohn Biomedical Institute, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA. Department of Biomedical Engineering, College of Engineering, University of Iowa, Iowa City, IA 52242, USA. ; Department of Medicine, University of Iowa, Iowa City, IA 52242, USA. Department of Molecular Physiology and Biophysics, Pappajohn Biomedical Institute, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA. Howard Hughes Medical Institute, University of Iowa, Iowa City, IA 52242, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26823428" target="_blank"〉PubMed〈/a〉
    Keywords: Acids/metabolism ; Animals ; Bicarbonates/metabolism ; Cystic Fibrosis/*metabolism/*microbiology ; H(+)-K(+)-Exchanging ATPase/genetics/*metabolism ; Humans ; Hydrogen-Ion Concentration ; Lung/*metabolism/*microbiology ; Mice ; Mice, Inbred CFTR/genetics/metabolism ; Mice, Transgenic ; Swine
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  • 91
    Publication Date: 2016-01-02
    Description: Several recent studies link parental environments to phenotypes in subsequent generations. In this work, we investigate the mechanism by which paternal diet affects offspring metabolism. Protein restriction in mice affects small RNA (sRNA) levels in mature sperm, with decreased let-7 levels and increased amounts of 5' fragments of glycine transfer RNAs (tRNAs). In testicular sperm, tRNA fragments are scarce but increase in abundance as sperm mature in the epididymis. Epididymosomes (vesicles that fuse with sperm during epididymal transit) carry RNA payloads matching those of mature sperm and can deliver RNAs to immature sperm in vitro. Functionally, tRNA-glycine-GCC fragments repress genes associated with the endogenous retroelement MERVL, in both embryonic stem cells and embryos. Our results shed light on sRNA biogenesis and its dietary regulation during posttesticular sperm maturation, and they also link tRNA fragments to regulation of endogenous retroelements active in the preimplantation embryo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sharma, Upasna -- Conine, Colin C -- Shea, Jeremy M -- Boskovic, Ana -- Derr, Alan G -- Bing, Xin Y -- Belleannee, Clemence -- Kucukural, Alper -- Serra, Ryan W -- Sun, Fengyun -- Song, Lina -- Carone, Benjamin R -- Ricci, Emiliano P -- Li, Xin Z -- Fauquier, Lucas -- Moore, Melissa J -- Sullivan, Robert -- Mello, Craig C -- Garber, Manuel -- Rando, Oliver J -- DP1ES025458/DP/NCCDPHP CDC HHS/ -- R01HD080224/HD/NICHD NIH HHS/ -- UL1 TR000161/TR/NCATS NIH HHS/ -- UL1 TR001453/TR/NCATS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Jan 22;351(6271):391-6. doi: 10.1126/science.aad6780. Epub 2015 Dec 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA. Program in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Obstetrics, Gynecology and Reproduction, Universite Laval, Centre Hospitalier Universitaire de Quebec Research Center, Quebec City, Quebec G1V 4G2, Canada. ; RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. Howard Hughes Medical Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA. RNAi Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. Howard Hughes Medical Institute, University of Massachusetts Medical School, Worcester, MA 01605, USA. ; Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA. oliver.rando@umassmed.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721685" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blastocyst/metabolism ; Diet, Protein-Restricted ; Epididymis/metabolism ; *Fertilization ; *Gene Expression Regulation ; Male ; Mice ; MicroRNAs/metabolism ; RNA, Transfer, Gly/*metabolism/*physiology ; Retroelements/genetics ; *Sperm Maturation ; Spermatozoa/*metabolism ; Testis/metabolism
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  • 92
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-01-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Leslie, Mitch -- New York, N.Y. -- Science. 2016 Jan 1;351(6268):13. doi: 10.1126/science.351.6268.13.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26721982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; DNA/chemistry/genetics/metabolism ; *Epigenesis, Genetic ; Male ; Metabolism/*genetics ; Mice ; RNA, Transfer/genetics/*metabolism ; *Spermatozoa
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  • 93
    Publication Date: 2016-04-30
    Description: Sleep has been described in animals ranging from worms to humans. Yet the electrophysiological characteristics of brain sleep, such as slow-wave (SW) and rapid eye movement (REM) activities, are thought to be restricted to mammals and birds. Recording from the brain of a lizard, the Australian dragon Pogona vitticeps, we identified SW and REM sleep patterns, thus pushing back the probable evolution of these dynamics at least to the emergence of amniotes. The SW and REM sleep patterns that we observed in lizards oscillated continuously for 6 to 10 hours with a period of ~80 seconds. The networks controlling SW-REM antagonism in amniotes may thus originate from a common, ancient oscillator circuit. Lizard SW dynamics closely resemble those observed in rodent hippocampal CA1, yet they originate from a brain area, the dorsal ventricular ridge, that has no obvious hodological similarity with the mammalian hippocampus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shein-Idelson, Mark -- Ondracek, Janie M -- Liaw, Hua-Peng -- Reiter, Sam -- Laurent, Gilles -- New York, N.Y. -- Science. 2016 Apr 29;352(6285):590-5. doi: 10.1126/science.aaf3621.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max Planck Institute for Brain Research, Frankfurt am Main, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27126045" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Brain/*physiology ; CA1 Region, Hippocampal/physiology ; Lizards/*physiology ; Sleep, REM/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
    Publication Date: 2016-03-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Collins, Francis S -- Anderson, James M -- Austin, Christopher P -- Battey, James F -- Birnbaum, Linda S -- Briggs, Josephine P -- Clayton, Janine A -- Cuthbert, Bruce -- Eisinger, Robert W -- Fauci, Anthony S -- Gallin, John I -- Gibbons, Gary H -- Glass, Roger I -- Gottesman, Michael M -- Gray, Patricia A -- Green, Eric D -- Greider, Franziska B -- Hodes, Richard -- Hudson, Kathy L -- Humphreys, Betsy -- Katz, Stephen I -- Koob, George F -- Koroshetz, Walter J -- Lauer, Michael S -- Lorsch, Jon R -- Lowy, Douglas R -- McGowan, John J -- Murray, David M -- Nakamura, Richard -- Norris, Andrea -- Perez-Stable, Eliseo J -- Pettigrew, Roderic I -- Riley, William T -- Rodgers, Griffin P -- Sieving, Paul A -- Somerman, Martha J -- Spong, Catherine Y -- Tabak, Lawrence A -- Volkow, Nora D -- Wilder, Elizabeth L -- New York, N.Y. -- Science. 2016 Mar 25;351(6280):1405. doi: 10.1126/science.351.6280.1405-a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Office of the Director, NIH, Bethesda, MD 20892, USA. collinsf@mail.nih.gov. ; Division of Program Coordination, Planning, and Strategic Initiatives, NIH, Bethesda, MD 20892, USA. ; National Center for Advancing Translational Science, NIH, Rockville, MD 20850, USA. ; National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA. ; National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC 27709, USA. ; National Center for Complementary and Integrative Health, NIH, Bethesda, MD 20892, USA. ; Office of Research on Women's Health, NIH, Bethesda, MD 20892, USA. ; National Institute of Mental Health, NIH, Bethesda, MD 20892, USA. ; Office of AIDS Research, NIH, Bethesda, MD 20892, USA. ; National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA. ; Clinical Center, NIH, Bethesda, MD 20892, USA. ; National Heart, Lung, and Blood Institute, NIH, Bethesda, MD 20892, USA. ; Fogarty International Center, NIH, Bethesda, MD 20892, USA. ; Office of Intramural Research, NIH, Bethesda, MD 20892, USA. ; National Institute of Nursing Research, NIH, Bethesda, MD 20892, USA. ; National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA. ; Office of Research Infrastructure Programs, NIH, Bethesda, MD 20892, USA. ; National Institute on Aging, NIH, Bethesda, MD 20892, USA. ; Office of the Director, NIH, Bethesda, MD 20892, USA. ; National Library of Medicine, NIH, Bethesda, MD 20892, USA. ; National Institute of Arthritis and Musculoskeletal and Skin Diseases, NIH, Bethesda, MD 20892, USA. ; National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, MD 20892, USA. ; NINDS, NIH, Bethesda, MD 20892, USA. ; Office of Extramural Research, NIH, Bethesda, MD 20892, USA. ; National Institute of General Medical Sciences, NIH, Bethesda, MD 20892, USA. ; National Cancer Institute, NIH, Bethesda, MD 20892, USA. ; Office of Management, NIH, Bethesda, MD 20892, USA. ; Office of Disease Prevention, NIH, Bethesda, MD 20892, USA. ; Center for Scientific Review, NIH, Bethesda, MD 20892, USA. ; Center for Information Technology, NIH, Bethesda, MD 20892, USA. ; National Institute on Minority Health and Health Disparities, NIH, Bethesda, MD 20892, USA. ; National Institute of Biomedical Imaging and Bioengineering, NIH, Bethesda, MD 20892, USA. ; Office of Behavioral and Social Sciences Research, NIH, Bethesda, MD 20892, USA. ; National Institute of Diabetes and Digestive and Kidney Diseases, NIH, Bethesda, MD 20892, USA. ; National Eye Institute, NIH, Bethesda, MD 20892, USA. ; National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD 20892, USA. ; Eunice Kennedy Shriver National Institute of Child Health and Human Development, NIH, Bethesda, MD 20892, USA. ; National Institute on Drug Abuse, NIH, Bethesda, MD 20892, USA. ; Office of Strategic Coordination, NIH, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27013720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomedical Research/*economics ; Humans ; National Institutes of Health (U.S.)/*economics
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  • 95
    Publication Date: 2016-02-26
    Description: Mota and Herculano-Houzel (Reports, 3 July 2015, p. 74) assign power functions to neuroanatomical data and present a model to account for evolutionary patterns of cortical folding in the mammalian brain. We detail how the model assumptions are in conflict with experimental and observational work and show that the model itself does not accurately fit the data.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lewitus, Eric -- Kelava, Iva -- Kalinka, Alex T -- Tomancak, Pavel -- Huttner, Wieland B -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):825. doi: 10.1126/science.aad2029.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut de Biologie, Ecole Normale Superieure, Paris, France. lewitus@biologie.ens.fr huttner@mpi-cbg.de. ; MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, UK. ; Institute of Population Genetics, Vetmeduni, Vienna, Austria. ; Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany. ; Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany. lewitus@biologie.ens.fr huttner@mpi-cbg.de.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912886" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cerebral Cortex ; Humans ; Lissencephaly/*pathology ; Neurons/*cytology
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  • 96
    Publication Date: 2016-02-26
    Description: Voltage-gated CaV1.2 channels (L-type calcium channel alpha1C subunits) are critical mediators of transcription-dependent neural plasticity. Whether these channels signal via the influx of calcium ion (Ca(2+)), voltage-dependent conformational change (VDeltaC), or a combination of the two has thus far been equivocal. We fused CaV1.2 to a ligand-gated Ca(2+)-permeable channel, enabling independent control of localized Ca(2+) and VDeltaC signals. This revealed an unexpected dual requirement: Ca(2+) must first mobilize actin-bound Ca(2+)/calmodulin-dependent protein kinase II, freeing it for subsequent VDeltaC-mediated accumulation. Neither signal alone sufficed to activate transcription. Signal order was crucial: Efficiency peaked when Ca(2+) preceded VDeltaC by 10 to 20 seconds. CaV1.2 VDeltaC synergistically augmented signaling by N-methyl-d-aspartate receptors. Furthermore, VDeltaC mistuning correlated with autistic symptoms in Timothy syndrome. Thus, nonionic VDeltaC signaling is vital to the function of CaV1.2 in synaptic and neuropsychiatric processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Boxing -- Tadross, Michael R -- Tsien, Richard W -- New York, N.Y. -- Science. 2016 Feb 19;351(6275):863-7. doi: 10.1126/science.aad3647.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience and Physiology and New York University Neuroscience Institute, New York, NY 10016, USA. ; Department of Molecular and Cellular Physiology, Beckman Center, School of Medicine, Stanford University, Stanford, CA 94305, USA. Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147, USA. tadrossm@janelia.hhmi.org. ; Department of Neuroscience and Physiology and New York University Neuroscience Institute, New York, NY 10016, USA. Department of Molecular and Cellular Physiology, Beckman Center, School of Medicine, Stanford University, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26912895" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autistic Disorder/genetics/metabolism ; Calcium Channel Blockers/pharmacology ; Calcium Channels, L-Type/chemistry/*metabolism ; *Calcium Signaling ; Calcium-Calmodulin-Dependent Protein Kinase Type 2/*metabolism ; Cells, Cultured ; Cyclic AMP Response Element-Binding Protein/metabolism ; *Gene Expression Regulation ; HEK293 Cells ; Hippocampus/cytology ; Humans ; Long QT Syndrome/genetics/metabolism ; Neuronal Plasticity/*genetics ; Neurons/drug effects/*metabolism ; Nimodipine/pharmacology ; Protein Conformation/drug effects ; Rats ; Rats, Sprague-Dawley ; Receptors, N-Methyl-D-Aspartate/metabolism ; Synapses/metabolism ; Syndactyly/genetics/metabolism
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  • 97
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    Unknown
    American Association for the Advancement of Science (AAAS)
    Publication Date: 2016-04-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shoubridge, Eric A -- New York, N.Y. -- Science. 2016 Apr 1;352(6281):31-2. doi: 10.1126/science.aaf5248. Epub 2016 Mar 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Montreal Neurological Institute, Department of Human Genetics, McGill University, Montreal, Quebec, Canada. eric@ericpc.mni.mcgill.ca.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27034357" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Humans ; Leigh Disease/*genetics/*therapy ; Mitochondria/*metabolism ; Oxygen/*metabolism ; Von Hippel-Lindau Tumor Suppressor Protein/*genetics
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
    Publication Date: 2016-04-30
    Description: Sahl et al in their Comment raise criticisms of our work that fall into three classes: image artifacts, resolution criteria, and comparative performance on live cells. We explore each of these in turn.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Dong -- Betzig, Eric -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2016 Apr 29;352(6285):527. doi: 10.1126/science.aad8396. Epub 2016 Apr 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Laboratory of Biological Macromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, P.R. China. Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147. lidong@ibp.ac.cn betzige@janelia.hhmi.org. ; Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA 20147. lidong@ibp.ac.cn betzige@janelia.hhmi.org.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27126031" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cytoskeleton/*ultrastructure ; *Endocytosis ; Imaging, Three-Dimensional/*methods ; Microscopy, Fluorescence/*methods ; Organelles/*ultrastructure
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2016-02-27
    Description: Rasmussen and Svensson correctly point out that there is currently no satisfactory method to fully align the Greenland and Cariaco Basin records of climate change. However, our approach using interstadial onsets as tie-points allows direct comparison between radiocarbon dates and Greenland climate records. Crucially, both the standard Greenland and the merged Greenland-Cariaco time scales show that interstadial warming was associated with megafaunal genetic transitions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cooper, Alan -- Turney, Chris -- Hughen, Konrad -- New York, N.Y. -- Science. 2016 Feb 26;351(6276):927. doi: 10.1126/science.aad8016.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Adelaide, Australian Centre for Ancient DNA, School of Earth and Environmental Sciences, and Environment Institute, Adelaide, Australia. alan.cooper@adelaide.edu.au. ; Climate Change Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia. ; Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26917762" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Extinction, Biological ; Global Warming/*history ; Humans
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
    Publication Date: 2016-03-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Junsheng -- Wang, Wei -- Axmacher, Jan Christoph -- Zhang, Yuanyuan -- Zhu, Yanpeng -- New York, N.Y. -- Science. 2016 Mar 11;351(6278):1160. doi: 10.1126/science.351.6278.1160-a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biodiversity Research Center, Chinese Research Academy of Environmental Sciences, Chaoyang District, Beijing, 100012, China. lijsh@craes.org.cn wang.wei@craes.org.cn. ; UCL Department of Geography, University College London, London, WC1E 6BT, UK. ; Biodiversity Research Center, Chinese Research Academy of Environmental Sciences, Chaoyang District, Beijing, 100012, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26965616" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; China ; *Conservation of Natural Resources ; Plants/*classification ; Vertebrates/*classification
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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