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  • Springer  (28)
  • American Association for the Advancement of Science (AAAS)
  • American Meteorological Society (AMS)
  • 2015-2019  (37)
  • 1
    Publication Date: 2019
    Description: Journal of Climate, Ahead of Print. 〈br/〉
    Print ISSN: 0894-8755
    Electronic ISSN: 1520-0442
    Topics: Geosciences , Physics
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  • 2
    Publication Date: 2019
    Description: 〈p〉Climate variations have a profound impact on marine ecosystems and the communities that depend upon them. Anticipating ecosystem shifts using global Earth system models (ESMs) could enable communities to adapt to climate fluctuations and contribute to long-term ecosystem resilience. We show that newly developed ESM-based marine biogeochemical predictions can skillfully predict satellite-derived seasonal to multiannual chlorophyll fluctuations in many regions. Prediction skill arises primarily from successfully simulating the chlorophyll response to the El Niño–Southern Oscillation and capturing the winter reemergence of subsurface nutrient anomalies in the extratropics, which subsequently affect spring and summer chlorophyll concentrations. Further investigations suggest that interannual fish-catch variations in selected large marine ecosystems can be anticipated from predicted chlorophyll and sea surface temperature anomalies. This result, together with high predictability for other marine-resource–relevant biogeochemical properties (e.g., oxygen, primary production), suggests a role for ESM-based marine biogeochemical predictions in dynamic marine resource management efforts.〈/p〉
    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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  • 3
    Publication Date: 2019
    Description: 〈p〉Control of emergent magnetic orders in correlated electron materials promises new opportunities for applications in spintronics. For their technological exploitation, it is important to understand the role of surfaces and interfaces to other materials and their impact on the emergent magnetic orders. Here, we demonstrate for iron telluride, the nonsuperconducting parent compound of the iron chalcogenide superconductors, determination and manipulation of the surface magnetic structure by low-temperature spin-polarized scanning tunneling microscopy. Iron telluride exhibits a complex structural and magnetic phase diagram as a function of interstitial iron concentration. Several theories have been put forward to explain the different magnetic orders observed in the phase diagram, which ascribe a dominant role either to interactions mediated by itinerant electrons or to local moment interactions. Through the controlled removal of surface excess iron, we can separate the influence of the excess iron from that of the change in the lattice structure.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 4
    Publication Date: 2019
    Description: 〈p〉Manley 〈i〉et al.〈/i〉 (〈i〉Science Advances〈/i〉, 16 September 2016, p. e1501814) report the splitting of a transverse acoustic phonon branch below 〈i〉T〈/i〉〈i〉〈sub〉C〈/sub〉〈/i〉 in the relaxor ferroelectric Pb[(Mg〈sub〉1/3〈/sub〉Nb〈sub〉2/3〈/sub〉)〈sub〉1–〈i〉x〈/i〉〈/sub〉Ti〈i〉〈sub〉x〈/sub〉〈/i〉]O〈sub〉3〈/sub〉 with 〈i〉x〈/i〉 = 0.30 using neutron scattering methods. Manley 〈i〉et al.〈/i〉 argue that this splitting occurs because these phonons hybridize with local, harmonic lattice vibrations associated with polar nanoregions. We show that splitting is absent when the measurement is made using a different neutron wavelength, and we suggest an alternative interpretation.〈/p〉
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 5
    Publication Date: 2015-10-10
    Description: Characterizing genetic diversity in Africa is a crucial step for most analyses reconstructing the evolutionary history of anatomically modern humans. However, historic migrations from Eurasia into Africa have affected many contemporary populations, confounding inferences. Here, we present a 12.5x coverage ancient genome of an Ethiopian male ("Mota") who lived approximately 4500 years ago. We use this genome to demonstrate that the Eurasian backflow into Africa came from a population closely related to Early Neolithic farmers, who had colonized Europe 4000 years earlier. The extent of this backflow was much greater than previously reported, reaching all the way to Central, West, and Southern Africa, affecting even populations such as Yoruba and Mbuti, previously thought to be relatively unadmixed, who harbor 6 to 7% Eurasian ancestry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gallego Llorente, M -- Jones, E R -- Eriksson, A -- Siska, V -- Arthur, K W -- Arthur, J W -- Curtis, M C -- Stock, J T -- Coltorti, M -- Pieruccini, P -- Stretton, S -- Brock, F -- Higham, T -- Park, Y -- Hofreiter, M -- Bradley, D G -- Bhak, J -- Pinhasi, R -- Manica, A -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2015 Nov 13;350(6262):820-2. doi: 10.1126/science.aad2879. Epub 2015 Oct 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. mg632@cam.ac.uk joneser@tcd.ie ron.pinhasi@ucd.ie am315@cam.ac.uk. ; Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland. mg632@cam.ac.uk joneser@tcd.ie ron.pinhasi@ucd.ie am315@cam.ac.uk. ; Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. Integrative Systems Biology Laboratory, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia. ; Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. ; Department of Society, Culture, and Language, University of South Florida St. Petersburg, 140 7th Avenue South, St. Petersburg, FL 33701, USA. ; Department of Anthropology, Ventura College, 4667 Telegraph Road, Ventura, CA 93003, USA. Humanities and Social Sciences Program, UCLA Extension, University of California Los Angeles, 10995 Le Conte Avenue, Los Angeles, CA 90095, USA. ; Department of Archaeology and Anthropology, University of Cambridge, Pembroke Street, Cambridge CB2 3QG, UK. ; Department of Physical Sciences, Earth and Environment, University of Siena, Via di Laterina, 8-53100 Siena, Italy. ; Department of Anthropology, University of Illinois at Urbana-Champaign, Public Service Archaeology and Architecture Program, 109 Davenport Hall, 607 South Mathews Avenue, Urbana, IL 61801, USA. ; Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, UK. Cranfield Forensic Institute, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, Oxon SN6 8LA, UK. ; Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, University of Oxford, Dyson Perrins Building, South Parks Road, Oxford OX1 3QY, UK. ; Theragen BiO Institute, 2nd Floor B-dong, AICT bldg, Iui-dong, Youngtong-gu, Suwon 443-270, Republic of Korea. ; Institute for Biochemistry and Biology, Faculty for Mathematics and Natural Sciences, University of Potsdam, Karl-Liebknechtstrasse 24-25, 14476 Potsdam Golm, Germany. Department of Biology, University of York, Wentworth Way, Heslington, York YO10 5DD, UK. ; Smurfit Institute of Genetics, Trinity College Dublin, Dublin, Ireland. ; The Genomics Institute, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea. ; School of Archaeology and Earth Institute, University College Dublin, Dublin 4, Ireland. mg632@cam.ac.uk joneser@tcd.ie ron.pinhasi@ucd.ie am315@cam.ac.uk.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26449472" target="_blank"〉PubMed〈/a〉
    Keywords: African Continental Ancestry Group/*genetics ; Asia ; Biological Evolution ; Ethiopia ; Europe ; Genetic Variation ; *Genome, Human ; *Human Migration ; Humans ; Male
    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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  • 6
    Publication Date: 2016-04-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burke, M -- Craxton, M -- Kolstad, C D -- Onda, C -- Allcott, H -- Baker, E -- Barrage, L -- Carson, R -- Gillingham, K -- Graff-Zivin, J -- Greenstone, M -- Hallegatte, S -- Hanemann, W M -- Heal, G -- Hsiang, S -- Jones, B -- Kelly, D L -- Kopp, R -- Kotchen, M -- Mendelsohn, R -- Meng, K -- Metcalf, G -- Moreno-Cruz, J -- Pindyck, R -- Rose, S -- Rudik, I -- Stock, J -- Tol, R S J -- New York, N.Y. -- Science. 2016 Apr 15;352(6283):292-3. doi: 10.1126/science.aad9634. Epub 2016 Apr 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stanford University, Stanford, CA, USA. ; Stanford University, Stanford, CA, USA. ckolstad@stanford.edu. ; New York University, New York, NY, USA. ; University of Massachusetts, Amherst, MA, USA. ; Brown University, Providence, RI, USA. ; University of California, San Diego, CA, USA. ; Yale University, New Haven, CT, USA. ; University of Chicago, Chicago, IL, USA. ; World Bank, Washington, DC, USA. ; Arizona State University, Tempe, AZ, USA. ; Columbia University, New York, NY, USA. ; University of California, Berkeley, CA, USA. ; Northwestern University, Evanston, IL, USA. ; University of Miami, Coral Gables, FL, USA. ; Resources for the Future, Washington, DC, USA. ; University of California, Santa Barbara, CA, USA. ; Tufts University, Medford, MA, USA. ; Georgia Institute of Technology, Atlanta, GA, USA. ; Massachusetts Institute of Technology, Cambridge, MA, USA. ; Electric Power Research Institute, Palo Alto, CA, USA. ; Iowa State University, Ames, IA, USA. ; Harvard University, Cambridge, MA, USA. ; University of Sussex, Falmer, UK, and Vrije Universiteit Amsterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27081055" target="_blank"〉PubMed〈/a〉
    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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  • 7
    Publication Date: 2017-06-29
    Description: It is now possible to create atomically thin regions of dopant atoms in silicon patterned with lateral dimensions ranging from the atomic scale (angstroms) to micrometers. These structures are building blocks of quantum devices for physics research and they are likely also to serve as key components of devices for next-generation classical and quantum information processing. Until now, the characteristics of buried dopant nanostructures could only be inferred from destructive techniques and/or the performance of the final electronic device; this severely limits engineering and manufacture of real-world devices based on atomic-scale lithography. Here, we use scanning microwave microscopy (SMM) to image and electronically characterize three-dimensional phosphorus nanostructures fabricated via scanning tunneling microscope–based lithography. The SMM measurements, which are completely nondestructive and sensitive to as few as 1900 to 4200 densely packed P atoms 4 to 15 nm below a silicon surface, yield electrical and geometric properties in agreement with those obtained from electrical transport and secondary ion mass spectroscopy for unpatterned phosphorus layers containing ~10 13 P atoms. The imaging resolution was 37 ± 1 nm in lateral and 4 ± 1 nm in vertical directions, both values depending on SMM tip size and depth of dopant layers. In addition, finite element modeling indicates that resolution can be substantially improved using further optimized tips and microwave gradient detection. Our results on three-dimensional dopant structures reveal reduced carrier mobility for shallow dopant layers and suggest that SMM could aid the development of fabrication processes for surface code quantum computers.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 8
    Publication Date: 2018-06-01
    Description: Little is known regarding the first people to enter the Americas and their genetic legacy. Genomic analysis of the oldest human remains from the Americas showed a direct relationship between a Clovis-related ancestral population and all modern Central and South Americans as well as a deep split separating them from North Americans in Canada. We present 91 ancient human genomes from California and Southwestern Ontario and demonstrate the existence of two distinct ancestries in North America, which possibly split south of the ice sheets. A contribution from both of these ancestral populations is found in all modern Central and South Americans. The proportions of these two ancestries in ancient and modern populations are consistent with a coastal dispersal and multiple admixture events.
    Keywords: Anthropology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2017-11-30
    Description: The intensification of agriculture is often associated with declining mobility and bone strength through time, although women often exhibit less pronounced trends than men. For example, previous studies of prehistoric Central European agriculturalists (~5300 calibrated years BC to 850 AD) demonstrated a significant reduction in tibial rigidity among men, whereas women were characterized by low tibial rigidity, little temporal change, and high variability. Because of the potential for sex-specific skeletal responses to mechanical loading and a lack of modern comparative data, women’s activity in prehistory remains difficult to interpret. This study compares humeral and tibial cross-sectional rigidity, shape, and interlimb loading among prehistoric Central European women agriculturalists and living European women of known behavior (athletes and controls). Prehistoric female tibial rigidity at all time periods was highly variable, but differed little from living sedentary women on average, and was significantly lower than that of living runners and football players. However, humeral rigidity exceeded that of living athletes for the first ~5500 years of farming, with loading intensity biased heavily toward the upper limb. Interlimb strength proportions among Neolithic, Bronze Age, and Iron Age women were most similar to those of living semi-elite rowers. These results suggest that, in contrast to men, rigorous manual labor was a more important component of prehistoric women’s behavior than was terrestrial mobility through thousands of years of European agriculture, at levels far exceeding those of modern women.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 10
    Publication Date: 2016-01-18
    Print ISSN: 1618-2642
    Electronic ISSN: 1618-2650
    Topics: Chemistry and Pharmacology
    Published by Springer
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