Meine Merkliste
my.chemie.de  
Login  

18.129 Aktuelle Fachpublikationen in Proceedings of the National Academy of Sciences current issue

rss

Microscopic identification of the order parameter governing liquid-liquid transition in a molecular liquid [Physics]

12.05.2015 | Ken-ichiro Murata; Hajime Tanaka, Proceedings of the National Academy of Sciences current issue, 2015

A liquid–liquid transition (LLT) in a single-component substance is an unconventional phase transition from one liquid to another. LLT has recently attracted considerable attention because of its fundamental importance in our understanding of the liquid state. To access the order parameter ...

mehr

How release of phosphate from mammalian F1-ATPase generates a rotary substep [Biochemistry]

12.05.2015 | John V. Bason; Martin G. Montgomery; Andrew G. W. Leslie; John E. Walker, Proceedings of the National Academy of Sciences current issue, 2015

The rotation of the central stalk of F1-ATPase is driven by energy derived from the sequential binding of an ATP molecule to its three catalytic sites and the release of the products of hydrolysis. In human F1-ATPase, each 360° rotation consists of three 120° steps composed of substeps of about...

mehr

Snake robot uncovers secrets to sidewinders' maneuverability [Physiology]

12.05.2015 | Sarah A. Stamper; Shahin Sefati; Noah J. Cowan, Proceedings of the National Academy of Sciences current issue, 2015

A hallmark of animal life is the ability to move through the environment to catch prey, avoid predators, or find mates. Animals achieve this using a staggering diversity of locomotor strategies despite having similar body shape and being subjected to similar physics—e.g., gazelles pronk and ...

mehr

Environmental constraints drive the partitioning of the soundscape in fishes [Ecology]

12.05.2015 | Laëtitia Ruppé; Gaël Clément; Anthony Herrel; Laurent Ballesta; Thierry Décamps; Loïc Kéver; Eric Parmentier, Proceedings of the National Academy of Sciences current issue, 2015

The underwater environment is more and more being depicted as particularly noisy, and the inventory of calling fishes is continuously increasing. However, it currently remains unknown how species share the soundscape and are able to communicate without misinterpreting the messages. Different ...

mehr

Ultrafast desorption of colloidal particles from fluid interfaces [Engineering]

12.05.2015 | Vincent Poulichet; Valeria Garbin, Proceedings of the National Academy of Sciences current issue, 2015

The self-assembly of solid particles at fluid–fluid interfaces is widely exploited to stabilize emulsions and foams, and in materials synthesis. The self-assembly mechanism is very robust owing to the large capillary energy associated with particle adsorption, of the order of millions of times ...

mehr

Assortative mating without assortative preference [Social Sciences]

12.05.2015 | Yu Xie; Siwei Cheng; Xiang Zhou, Proceedings of the National Academy of Sciences current issue, 2015

Assortative mating—marriage of a man and a woman with similar social characteristics—is a commonly observed phenomenon. In the existing literature in both sociology and economics, this phenomenon has mainly been attributed to individuals’ conscious preferences for assortative mating. In this ...

mehr

Sensing of molecules using quantum dynamics [Chemistry]

12.05.2015 | Agostino Migliore; Ron Naaman; David N. Beratan, Proceedings of the National Academy of Sciences current issue, 2015

We design sensors where information is transferred between the sensing event and the actuator via quantum relaxation processes, through distances of a few nanometers. We thus explore the possibility of sensing using intrinsically quantum mechanical phenomena that are also at play in photobiology, ...

mehr

Syringyl lignin production in conifers: Proof of concept in a Pine tracheary element system [Plant Biology]

12.05.2015 | Armin Wagner; Yuki Tobimatsu; Lorelle Phillips; Heather Flint; Barbara Geddes; Fachuang Lu; John Ralph, Proceedings of the National Academy of Sciences current issue, 2015

Conifers (softwoods) naturally lack syringyl units in their lignins, rendering lignocellulosic materials from such species more difficult to process than syringyl-rich hardwood species. Using a transformable Pinus radiata tracheary element (TE) system as an experimental platform, we investigated ...

mehr

Neural crest cell-derived VEGF promotes embryonic jaw extension [Developmental Biology]

12.05.2015 | Sophie Wiszniak; Francesca E. Mackenzie; Peter Anderson; Samuela Kabbara; Christiana Ruhrberg; Quenten Schwarz, Proceedings of the National Academy of Sciences current issue, 2015

Jaw morphogenesis depends on the growth of Meckel’s cartilage during embryogenesis. However, the cell types and signals that promote chondrocyte proliferation for Meckel’s cartilage growth are poorly defined. Here we show that neural crest cells (NCCs) and their derivatives provide an essential ...

mehr

Transcranial direct current stimulation to lateral prefrontal cortex could increase meta-awareness of mind wandering [Social Sciences]

12.05.2015 | Kieran C. R. Fox; Kalina Christoff, Proceedings of the National Academy of Sciences current issue, 2015

In a recent article, Axelrod et al. (1) present the results of an intriguing transcranial direct current stimulation (tDCS) study, showing that noninvasive electrical stimulation of the dorsolateral and rostrolateral prefrontal cortex (PFC) increases the propensity to mind-wander. Further, they ...

mehr

Seite 2 von 1813
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.