Proceedings of the National Academy of Sciences (PNAS)

Table Of Contents Page, PNAS Volume 123, Number 30

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PNAS

No evidence of continuously advanced green-up dates in the Tibetan Plateau over the last decade

Satellite-derived greenness vegetation indices provide a valuable way to retrieve spatially continuous information about phenological change and have been thus widely used to assess the influences of ...
PNAS

Attenuation of sinking particulate organic carbon flux through the mesopelagic ocean

Edited by David M. Karl, University of Hawaii, Honolulu, HI, and approved December 9, 2014 (received for review August 8, 2014) ...
PNAS

Efficient cruising for swimming and flying animals is dictated by fluid drag

Many swimming and flying animals are observed to cruise in a narrow range of Strouhal numbers, where the Strouhal number S t = 2 f A / U is a dimensionless parameter that relates stroke frequency f, ...
PNAS

The Isolation and Culture of Gymnosporangium Juniperi-Virgininae Schw. Upon Artificial Media

Research Fellow, Div. of Plant Pathology and Botany, Univ. of Minnesota, St. Paul, Minn. This research was supported in part by a grant from the Rockefeller Foundation to the Dept. of Plant Science, ...
PNAS

EPIGENETIC CONTROL SYSTEMS

Aided by grants from the National Science Foundation. This essay is based on remarks given at a conference on “Extrachromosomal Heredity” held at Gif-sur-Yvette, France, in March, 1958. The conference ...
PNAS

Acoustical Impedance and the Theory of Horns and of the Phonograph

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PNAS

On the Riemann Hypothesis in Function-Fields

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PNAS

THE SEISMIC SURFACE PULSE

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PNAS

Mechanism of action of streptomycin in E. coli: interruption of the ribosome cycle at the initiation of protein synthesis.

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PNAS

Terrestrial ecosystem nitrogen cycling in response to field warming: Global patterns and future trends

Nitrogen cycling regulates ecosystem productivity and carbon storage, yet its global responses, mechanisms, and future trajectories under climate warming remain poorly understood. By integrating 7,941 ...
PNAS

From micro to nano contacts in biological attachment devices

Animals with widely varying body weight, such as flies, spiders, and geckos, can adhere to and move along vertical walls and even ceilings. This ability is caused by very efficient attachment ...