ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
Sammlung
Schlagwörter
Verlag/Herausgeber
Erscheinungszeitraum
  • 1
    facet.materialart.
    Unbekannt
    The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms (1967)
    In:  IEEE Transaction Audio Electroacoust., Hannover, D. Reidel Publishing Company, vol. AU-15, no. 5, pp. 70-73, pp. L09303, (ISSN: 1340-4202)
    Details
    Publikationsdatum: 1967
    Schlagwort(e): Transformations ; Fast Fourier transf. ; Power spectrum ; Spectrum
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BIBLIOGRAFIE SEISMOLOGIE
  • 2
    facet.materialart.
    Unbekannt
    Fully Kinetic Simulations of Dense Plasma Focus Z-Pinch Devices (2012)
    American Physical Society (APS)
    Details
    Publikationsdatum: 2012-11-15
    Beschreibung: Author(s): A. Schmidt, V. Tang, and D. Welch Dense plasma focus Z -pinch devices are sources of copious high energy electrons and ions, x rays, and neutrons. The mechanisms through which these physically simple devices generate such high-energy beams in a relatively short distance are not fully understood. We now have, for the first time, demon... [Phys. Rev. Lett. 109, 205003] Published Wed Nov 14, 2012
    Schlagwort(e): Plasma and Beam Physics
    Print ISSN: 0031-9007
    Digitale ISSN: 1079-7114
    Thema: Physik
    Publiziert von American Physical Society (APS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 3
    facet.materialart.
    Unbekannt
    Population genomics and local adaptation in wild isolates of a model microbial eukaryote [Evolution] (2011)
    National Academy of Sciences
    Details
    Publikationsdatum: 2011-02-16
    Beschreibung: Elucidating the connection between genotype, phenotype, and adaptation in wild populations is fundamental to the study of evolutionary biology, yet it remains an elusive goal, particularly for microscopic taxa, which comprise the majority of life. Even for microbes that can be reliably found in the wild, defining the boundaries of their populations and discovering ecologically relevant phenotypes has proved extremely difficult. Here, we have circumvented these issues in the microbial eukaryote Neurospora crassa by using a “reverse-ecology” population genomic approach that is free of a priori assumptions about candidate adaptive alleles. We performed Illumina whole-transcriptome sequencing of 48 individuals to identify single nucleotide polymorphisms. From these data, we discovered two cryptic and recently diverged populations, one in the tropical Caribbean basin and the other endemic to subtropical Louisiana. We conducted high-resolution scans for chromosomal regions of extreme divergence between these populations and found two such genomic “islands.” Through growth-rate assays, we found that the subtropical Louisiana population has a higher fitness at low temperature (10 °C) and that several of the genes within these distinct regions have functions related to the response to cold temperature. These results suggest the divergence islands may be the result of local adaptation to the 9 °C difference in average yearly minimum temperature between these two populations. Remarkably, another of the genes identified using this unbiased, whole-genome approach is the well-known circadian oscillator frequency, suggesting that the 2.4°–10.6° difference in latitude between the populations may be another important environmental parameter.
    Print ISSN: 0027-8424
    Digitale ISSN: 1091-6490
    Thema: Biologie , Medizin , Allgemeine Naturwissenschaft
    Publiziert von National Academy of Sciences
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 4
    facet.materialart.
    Unbekannt
    Fully kinetic simulations of megajoule-scale dense plasma focus (2014)
    American Institute of Physics (AIP)
    Details
    Publikationsdatum: 2014-10-10
    Beschreibung: Dense plasma focus (DPF) Z-pinch devices are sources of copious high energy electrons and ions, x-rays, and neutrons. Megajoule-scale DPFs can generate 10 12 neutrons per pulse in deuterium gas through a combination of thermonuclear and beam-target fusion. However, the details of the neutron production are not fully understood and past optimization efforts of these devices have been largely empirical. Previously, we reported on the first fully kinetic simulations of a kilojoule-scale DPF and demonstrated that both kinetic ions and kinetic electrons are needed to reproduce experimentally observed features, such as charged-particle beam formation and anomalous resistivity. Here, we present the first fully kinetic simulation of a MegaJoule DPF, with predicted ion and neutron spectra, neutron anisotropy, neutron spot size, and time history of neutron production. The total yield predicted by the simulation is in agreement with measured values, validating the kinetic model in a second energy regime.
    Print ISSN: 1070-664X
    Digitale ISSN: 1089-7674
    Thema: Physik
    Publiziert von American Institute of Physics (AIP)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 5
    facet.materialart.
    Unbekannt
    Describing Myxococcus xanthus Aggregation Using Ostwald Ripening Equations for Thin Liquid Films (2014)
    Springer Nature
    Details
    Publikationsdatum: 2014-09-19
    Beschreibung: When starved, a swarm of millions of Myxococcus xanthus cells coordinate their movement from outward swarming to inward coalescence. The cells then execute a synchronous program of multicellular development, arranging themselves into dome shaped aggregates. Over the course of development, about half of the initial aggregates disappear, while others persist and mature into fruiting bodies. This work seeks to develop a quantitative model for aggregation that accurately simulates which will disappear and which will persist. We analyzed time-lapse movies of M. xanthus development, modeled aggregation using the equations that describe Ostwald ripening of droplets in thin liquid films, and predicted the disappearance and persistence of aggregates with an average accuracy of 85%. We then experimentally validated a prediction that is fundamental to this model by tracking individual fluorescent cells as they moved between aggregates and demonstrating that cell movement towards and away from aggregates correlates with aggregate disappearance. Describing development through this model may limit the number and type of molecular genetic signals needed to complete M. xanthus development, and it provides numerous additional testable predictions. Scientific Reports 4 doi: 10.1038/srep06376
    Digitale ISSN: 2045-2322
    Thema: Allgemeine Naturwissenschaft
    Publiziert von Springer Nature
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 6
    facet.materialart.
    Unbekannt
    Interaction of human Arp2/3 complex and the Listeria monocytogenes ActA protein in actin filament nucleation (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1998-07-04
    Beschreibung: Actin filament assembly at the cell surface of the pathogenic bacterium Listeria monocytogenes requires the bacterial ActA surface protein and the host cell Arp2/3 complex. Purified Arp2/3 complex accelerated the nucleation of actin polymerization in vitro, but pure ActA had no effect. However, when combined, the Arp2/3 complex and ActA synergistically stimulated the nucleation of actin filaments. This mechanism of activating the host Arp2/3 complex at the L. monocytogenes surface may be similar to the strategy used by cells to control Arp2/3 complex activity and hence the spatial and temporal distribution of actin polymerization.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Welch, M D -- Rosenblatt, J -- Skoble, J -- Portnoy, D A -- Mitchison, T J -- AI26919/AI/NIAID NIH HHS/ -- GM48027/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Jul 3;281(5373):105-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9651243" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actin-Related Protein 2 ; Actin-Related Protein 3 ; Actins/chemistry/*metabolism/ultrastructure ; Bacterial Proteins/chemistry/*metabolism ; Biopolymers ; Cell Membrane/metabolism ; Cytochalasin D/pharmacology ; *Cytoskeletal Proteins ; Humans ; Kinetics ; Listeria monocytogenes/*metabolism ; Membrane Proteins/chemistry/*metabolism ; Microscopy, Electron
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 7
    facet.materialart.
    Unbekannt
    American bogpersons (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1994-05-13
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Welch, P D -- New York, N.Y. -- Science. 1994 May 13;264(5161):1024-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17830114" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 8
    facet.materialart.
    Unbekannt
    Dynamic nuclear actin assembly by Arp2/3 complex and a baculovirus WASP-like protein (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2006-10-21
    Beschreibung: Diverse bacterial and viral pathogens induce actin polymerization in the cytoplasm of host cells to facilitate infection. Here, we describe a pathogenic mechanism for promoting dynamic actin assembly in the nucleus to enable viral replication. The baculovirus Autographa californica multiple nucleopolyhedrovirus induced nuclear actin polymerization by translocating the host actin-nucleating Arp2/3 complex into the nucleus, where it was activated by p78/83, a viral Wiskott-Aldrich syndrome protein (WASP)-like protein. Nuclear actin assembly by p78/83 and Arp2/3 complex was essential for viral progeny production. Recompartmentalizing dynamic host actin may represent a conserved mode of pathogenesis and reflect viral manipulation of normal functions of nuclear actin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goley, Erin D -- Ohkawa, Taro -- Mancuso, Joel -- Woodruff, Jeffrey B -- D'Alessio, Joseph A -- Cande, W Zacheus -- Volkman, Loy E -- Welch, Matthew D -- AI054693/AI/NIAID NIH HHS/ -- GM59609/GM/NIGMS NIH HHS/ -- R01 GM059609/GM/NIGMS NIH HHS/ -- R01 GM059609-07/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2006 Oct 20;314(5798):464-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17053146" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Actin-Related Protein 2-3 Complex/*metabolism ; Actins/*metabolism ; Animals ; Biopolymers/metabolism ; Cell Line ; Cell Nucleus/*metabolism ; Fluorescence Recovery After Photobleaching ; Moths ; Mutation ; Nucleocapsid/metabolism/ultrastructure ; Nucleopolyhedrovirus/genetics/*physiology ; Transfection ; Viral Proteins/chemistry/genetics/isolation & purification/*metabolism ; Virion/ultrastructure ; Virus Replication ; Wiskott-Aldrich Syndrome Protein/chemistry
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 9
    facet.materialart.
    Unbekannt
    The emerging world of wikis (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2008-06-07
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hu, James C -- Aramayo, Rodolfo -- Bolser, Dan -- Conway, Tyrrell -- Elsik, Christine G -- Gribskov, Michael -- Kelder, Thomas -- Kihara, Daisuke -- Knight, Thomas F Jr -- Pico, Alexander R -- Siegele, Deborah A -- Wanner, Barry L -- Welch, Roy D -- R01 GM058770/GM/NIGMS NIH HHS/ -- R01 GM080223/GM/NIGMS NIH HHS/ -- U24 GM077905/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2008 Jun 6;320(5881):1289-90. doi: 10.1126/science.320.5881.1289b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18535227" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): *Computational Biology ; *Databases, Nucleic Acid ; National Library of Medicine (U.S.) ; United States
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
  • 10
    facet.materialart.
    Unbekannt
    Cilia-like beating of active microtubule bundles (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2011-07-23
    Beschreibung: The mechanism that drives the regular beating of individual cilia and flagella, as well as dense ciliary fields, remains unclear. We describe a minimal model system, composed of microtubules and molecular motors, which self-assemble into active bundles exhibiting beating patterns reminiscent of those found in eukaryotic cilia and flagella. These observations suggest that hundreds of molecular motors, acting within an elastic microtubule bundle, spontaneously synchronize their activity to generate large-scale oscillations. Furthermore, we also demonstrate that densely packed, actively bending bundles spontaneously synchronize their beating patterns to produce collective behavior similar to metachronal waves observed in ciliary fields. The simple in vitro system described here could provide insights into beating of isolated eukaryotic cilia and flagella, as well as their synchronization in dense ciliary fields.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3172966/" 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/PMC3172966/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez, Timothy -- Welch, David -- Nicastro, Daniela -- Dogic, Zvonimir -- 5K25GM85613/GM/NIGMS NIH HHS/ -- 5R01GM083122/GM/NIGMS NIH HHS/ -- K25 GM085613/GM/NIGMS NIH HHS/ -- K25 GM085613-01/GM/NIGMS NIH HHS/ -- K25 GM085613-02/GM/NIGMS NIH HHS/ -- K25 GM085613-03/GM/NIGMS NIH HHS/ -- K25 GM085613-04/GM/NIGMS NIH HHS/ -- K25 GM085613-05/GM/NIGMS NIH HHS/ -- R01 GM083122/GM/NIGMS NIH HHS/ -- R01 GM083122-01/GM/NIGMS NIH HHS/ -- R01 GM083122-02/GM/NIGMS NIH HHS/ -- R01 GM083122-03/GM/NIGMS NIH HHS/ -- R01 GM083122-03S1/GM/NIGMS NIH HHS/ -- R01 GM083122-03S2/GM/NIGMS NIH HHS/ -- R01 GM083122-04/GM/NIGMS NIH HHS/ -- T32 GM007596/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2011 Jul 22;333(6041):456-9. doi: 10.1126/science.1203963.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physics, Brandeis University, 415 South Street, Waltham, MA 02454, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21778400" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Axoneme/physiology ; Cilia/chemistry/*physiology ; Flagella/chemistry/physiology ; Kinesin/*metabolism ; Microtubules/chemistry/*physiology/ultrastructure ; Models, Biological ; Molecular Motor Proteins/*metabolism ; Movement ; Polyethylene Glycols
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    AKTUELLE ARTIKEL
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...