منابع مشابه
Factors governing helix formation in peptides confined to carbon nanotubes.
The effect of confinement on the stability and dynamics of peptides and proteins is relevant in the context of a number of problems in biology and biotechnology. We have examined the stability of different helix-forming sequences upon confinement to a carbon nanotube using Langevin dynamics simulations of a coarse-grained representation of the polypeptide chain. We show that the interplay of se...
متن کاملPower laws governing hydrology and carbon dynamics in northern peatlands
Environmental and biological variables fluctuate over different time scales. On the basis of power spectral analysis of 14 time series at four sites from northern peatlands (fens and raised bogs), the temporal variability of physical environment (temperatures, water tables) and biological variables (CO2 flux) shows power-law behaviour, with a scaling exponent ranging from about 0.5 to 1.5. The ...
متن کاملForest Ecosystem Services: Carbon and Air Quality
Forests provide various ecosystem services related to air quality that can provide substantial value to society. Through tree growth and alteration of their local environment, trees and forests both directly and indirectly affect air quality. Though forests affect air quality in numerous ways, this chapter will focus on five main ecosystem services or disservices related to air quality that hav...
متن کاملEcosystem carbon exchange subjected to seasonal drought
Ecosystem carbon exchange of a subtropical evergreen coniferous plantation subjected to seasonal drought, 2003–2007 X.-F. Wen, H.-M. Wang, G.-R. Yu, and X.-M. Sun Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China Received: 27 May 2009 – Accepted: 10 August 2009 – Published: 2...
متن کاملTrophic cascade alters ecosystem carbon exchange.
Trophic cascades--the indirect effects of carnivores on plants mediated by herbivores--are common across ecosystems, but their influence on biogeochemical cycles, particularly the terrestrial carbon cycle, are largely unexplored. Here, using a (13)C pulse-chase experiment, we demonstrate how trophic structure influences ecosystem carbon dynamics in a meadow system. By manipulating the presence ...
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ژورنال
عنوان ژورنال: Global Environmental Politics
سال: 2013
ISSN: 1526-3800,1536-0091
DOI: 10.1162/glep_a_00201