My watch list
my.chemeurope.com  
Login  

17,912 Newest Publications in proceedings of the national academy of sciences current issue

rss
matching the following criteria

Anomalous scaling law of strength and toughness of cellulose nanopaper [Engineering]

21-Jul-2015 | Hongli Zhu; Shuze Zhu; Zheng Jia; Sepideh Parvinian; Yuanyuan Li; Oeyvind Vaaland; Liangbing Hu; Teng Li, Proceedings of the National Academy of Sciences current issue, 2015

The quest for both strength and toughness is perpetual in advanced material design; unfortunately, these two mechanical properties are generally mutually exclusive. So far there exists only limited success of attaining both strength and toughness, which often needs material-specific, complicated, ...

more

Climatic controls on ecosystem resilience: Postfire regeneration in the Cape Floristic Region of South Africa [Environmental Sciences]

21-Jul-2015 | Adam M. Wilson; Andrew M. Latimer; John A. Silander Jr., Proceedings of the National Academy of Sciences current issue, 2015

Conservation of biodiversity and natural resources in a changing climate requires understanding what controls ecosystem resilience to disturbance. This understanding is especially important in the fire-prone Mediterranean systems of the world. The fire frequency in these systems is sensitive to ...

more

Randomization and resilience of brain functional networks as systems-level endophenotypes of schizophrenia [Neuroscience]

21-Jul-2015 | Chun-Yi Zac Lo; Tsung-Wei Su; Chu-Chung Huang; Chia-Chun Hung; Wei-Ling Chen; Tsuo-Hung Lan; Ching-Po Lin; Edward T. ..., Proceedings of the National Academy of Sciences current issue, 2015

Schizophrenia is increasingly conceived as a disorder of brain network organization or dysconnectivity syndrome. Functional MRI (fMRI) networks in schizophrenia have been characterized by abnormally random topology. We tested the hypothesis that network randomization is an endophenotype of ...

more

Conserved regulatory mechanism controls the development of cells with rooting functions in land plants [Plant Biology]

21-Jul-2015 | Thomas Ho Yuen Tam; Bruno Catarino; Liam Dolan, Proceedings of the National Academy of Sciences current issue, 2015

Land plants develop filamentous cells—root hairs, rhizoids, and caulonemata—at the interface with the soil. Members of the group XI basic helix–loop–helix (bHLH) transcription factors encoded by LOTUS JAPONICUS ROOTHAIRLESS1-LIKE (LRL) genes positively regulate the development of root hairs in ...

more

Reply to Baires et al.: Shifts in Mississippi River flood regime remain a contributing factor to Cahokia's emergence and decline [Physical Sciences]

21-Jul-2015 | Samuel E. Munoz; Kristine E. Gruley; David A. Fike; Sissel Schroeder; John W. Williams, Proceedings of the National Academy of Sciences current issue, 2015

Baires et al. (1) critique two aspects of our study (2): (i) whether a large flood event “caused the collapse of the largest Pre-Columbian city north of Mexico,” and (ii) the timing of one flood event (Flood Event V), which we reported to have a 95% confidence interval of A.D....

more

Reanalysis of parabiosis of obesity mutants in the age of leptin [Genetics]

21-Jul-2015 | Wenwen Zeng; Yi-Hsueh Lu; Jonah Lee; Jeffrey M. Friedman, Proceedings of the National Academy of Sciences current issue, 2015

In this study we set out to explain the differing effects of parabiosis with genetically diabetic (db) mice versus administration of recombinant leptin. Parabiosis of db mutant, which overexpress leptin, to wildtype (WT) or genetically obese (ob) mice has been reported to cause death by ...

more

Measuring selective constraint on fertility in human life histories [Population Biology]

21-Jul-2015 | James Holland Jones; Shripad Tuljapurkar, Proceedings of the National Academy of Sciences current issue, 2015

Human life histories combine late age at first reproduction, long reproductive span, relatively high fertility, and substantial postreproductive survival. However, even among the most fecund populations, human fertility falls far below its theoretical maximum. The extent of parental care required ...

more

Adolescent impatience decreases with increased frontostriatal connectivity [Psychological and Cognitive Sciences]

21-Jul-2015 | Wouter van den Bos; Christian A. Rodriguez; Julie B. Schweitzer; Samuel M. McClure, Proceedings of the National Academy of Sciences current issue, 2015

Adolescence is a developmental period associated with an increase in impulsivity. Impulsivity is a multidimensional construct, and in this study we focus on one of the underlying components: impatience. Impatience can result from (i) disregard of future outcomes and/or (ii) oversensitivity to ...

more

Spectrum of power laws for curved hand movements [Neuroscience]

21-Jul-2015 | Dongsung Huh; Terrence J. Sejnowski, Proceedings of the National Academy of Sciences current issue, 2015

In a planar free-hand drawing of an ellipse, the speed of movement is proportional to the −1/3 power of the local curvature, which is widely thought to hold for general curved shapes. We investigated this phenomenon for general curved hand movements by analyzing an optimal control model that ...

more

Suppression of conformational heterogeneity at a protein-protein interface [Biophysics and Computational Biology]

21-Jul-2015 | Lindsay N. Deis; Qinglin Wu; You Wang; Yang Qi; Kyle G. Daniels; Pei Zhou; Terrence G. Oas, Proceedings of the National Academy of Sciences current issue, 2015

Staphylococcal protein A (SpA) is an important virulence factor from Staphylococcus aureus responsible for the bacterium’s evasion of the host immune system. SpA includes five small three-helix–bundle domains that can each bind with high affinity to many host proteins such as antibodies. The ...

more

Page 1 From 1792
Subscribe to e-mail updates relating to your search

You will receive via e-mail the latest search results matching your search criteria. This service is free of charge and can be cancelled at any time.

Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE