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15,770 Newest Publications in proceedings of the national academy of sciences current issue

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matching the following criteria

Links that speak: The global language network and its association with global fame [Applied Physical Sciences]

30-Dec-2014 | Shahar Ronen; Bruno Gonçalves; Kevin Z. Hu; Alessandro Vespignani; Steven Pinker; César A. Hidalgo, Proceedings of the National Academy of Sciences current issue, 2014

Languages vary enormously in global importance because of historical, demographic, political, and technological forces. However, beyond simple measures of population and economic power, there has been no rigorous quantitative way to define the global influence of languages. Here we use the ...

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Revealing bacterial targets of growth inhibitors encoded by bacteriophage T7 [Microbiology]

30-Dec-2014 | Shahar Molshanski-Mor; Ido Yosef; Ruth Kiro; Rotem Edgar; Miriam Manor; Michael Gershovits; Mia Laserson; Tal Pupko; ..., Proceedings of the National Academy of Sciences current issue, 2014

Today's arsenal of antibiotics is ineffective against some emerging strains of antibiotic-resistant pathogens. Novel inhibitors of bacterial growth therefore need to be found. The target of such bacterial-growth inhibitors must be identified, and one way to achieve this is by locating mutations ...

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The curious case of the Arctic mastodons [Earth, Atmospheric, and Planetary Sciences]

30-Dec-2014 | Duane Froese, Proceedings of the National Academy of Sciences current issue, 2014

In 1796, the French anatomist Georges Cuvier sparked widespread interest in the idea that many organisms, including some large mammals, had gone extinct in the recent geologic past (1). He proposed, based on the morphology and function of molars, that African and Indian elephants were separate ...

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Maternal temperature history activates Flowering Locus T in fruits to control progeny dormancy according to time of year [Plant Biology]

30-Dec-2014 | Min Chen; Dana R. MacGregor; Anuja Dave; Hannah Florance; Karen Moore; Konrad Paszkiewicz; Nicholas Smirnoff; Ian A. ..., Proceedings of the National Academy of Sciences current issue, 2014

Seasonal behavior is important for fitness in temperate environments but it is unclear how progeny gain their initial seasonal entrainment. Plants use temperature signals to measure time of year, and changes to life histories are therefore an important consequence of climate change. Here we show ...

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GDM-associated insulin deficiency hinders the dissociation of SERT from ERp44 and down-regulates placental 5-HT uptake [Medical Sciences]

30-Dec-2014 | Yicong Li; Coedy Hadden; Preeti Singh; Charles P. Mercado; Pamela Murphy; Nafisa K. Dajani; Curtis L. Lowery; Drucil ..., Proceedings of the National Academy of Sciences current issue, 2014

Serotonin (5-HT) transporter (SERT) regulates the level of 5-HT in placenta. Initially, we found that in gestational diabetes mellitus (GDM), whereas free plasma 5-HT levels were elevated, the 5-HT uptake rates of trophoblast were significantly down-regulated, due to impairment in the ...

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Correction for Hodes et al., Individual differences in the peripheral immune system promote resilience versus susceptibility to social stress [Correction]

30-Dec-2014 | Proceedings of the National Academy of Sciences current issue, 2014

NEUROSCIENCE Correction for “Individual differences in the peripheral immune system promote resilience versus susceptibility to social stress,” by Georgia E. Hodes, Madeline L. Pfau, Marylene Leboeuf, Sam A. Golden, Daniel J. Christoffel, Dana Bregman, Nicole Rebusi, Mitra Heshmati, Hossein ...

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Electrically pumped semiconductor laser with monolithic control of circular polarization [Applied Physical Sciences]

30-Dec-2014 | Patrick Rauter; Jiao Lin; Patrice Genevet; Suraj P. Khanna; Mohammad Lachab; A. Giles Davies; Edmund H. Linfield; Fe ..., Proceedings of the National Academy of Sciences current issue, 2014

We demonstrate surface emission of terahertz (THz) frequency radiation from a monolithic quantum cascade laser with built-in control over the degree of circular polarization by “fishbone” gratings composed of orthogonally oriented aperture antennas. Different grating concepts for circularly ...

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TDP-43 N terminus encodes a novel ubiquitin-like fold and its unfolded form in equilibrium that can be shifted by binding to ssDNA [Biophysics and Computational Biology]

30-Dec-2014 | Haina Qin; Liang-Zhong Lim; Yuanyuan Wei; Jianxing Song, Proceedings of the National Academy of Sciences current issue, 2014

Transactivation response element (TAR) DNA-binding protein 43 (TDP-43) is the principal component of ubiquitinated inclusions characteristic of most forms of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia-frontotemporal lobar degeneration with TDP-43–positive inclusions ...

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Economic optimization of a global strategy to address the pandemic threat [Medical Sciences]

30-Dec-2014 | Jamison Pike; Tiffany Bogich; Sarah Elwood; David C. Finnoff; Peter Daszak, Proceedings of the National Academy of Sciences current issue, 2014

Emerging pandemics threaten global health and economies and are increasing in frequency. Globally coordinated strategies to combat pandemics, similar to current strategies that address climate change, are largely adaptive, in that they attempt to reduce the impact of a pathogen after it has ...

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van der Waals interactions at the nanoscale: The effects of nonlocality [Applied Physical Sciences]

30-Dec-2014 | Yu Luo; Rongkuo Zhao; John B. Pendry, Proceedings of the National Academy of Sciences current issue, 2014

Calculated using classical electromagnetism, the van der Waals force increases without limit as two surfaces approach. In reality, the force saturates because the electrons cannot respond to fields of very short wavelength: polarization charges are always smeared out to some degree and in ...

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