منابع مشابه
Imaging dissipation and hot spots in carbon nanotube network transistors
We use infrared thermometry of carbon nanotube network CNN transistors and find the formation of distinct hot spots during operation. However, the average CNN temperature at breakdown is significantly lower than expected from the breakdown of individual nanotubes, suggesting extremely high regions of power dissipation at the CNN junctions. Statistical analysis and comparison with a thermal mode...
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[1] Riparian ecosystems are characterized by spatial and temporal heterogeneity in physical and biological attributes, with consequences for nutrient cycling. We investigated the responses of carbon (C) and nitrogen (N) cycling processes to the hydrogeomorphic template in the riparian zone of the San Pedro River, Arizona, a large (catchment area !11,500 km), free-flowing, semiarid river. Over a...
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September 20 07 During the 30 minutes it will take you to read this article, 360 preschool children will die of hunger and malnutrition. Twelve a minute, around the clock; more than six million a year. But that is only the tip of the proverbial and ugly iceberg. One in four preschoolers in developing countries suffers from hunger and nutritional deficiencies. These children do not grow to their...
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A century ago, malaria was prevalent across much of the inhabited world. With improvements in housing, environmental management, access to antimalarial drugs (quinine, followed by chloroquine), and use of the insecticide DDT, malaria was driven from Europe, North America, and the Union of Soviet Socialist Republics. Building on these early successes, the World Health Organization launched the f...
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The Policing and Reducing Crime Unit (PRC) was formed in 1998 as a result of the merger of the Police Research Group (PRG) and the Research and Statistics Directorate. PRC Unit is now part of the Research, Development and Statistics Directorate of the Home Office. The PRC Unit carries out and commissions research in the social and management sciences on policing and crime reduction, broadening ...
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ژورنال
عنوان ژورنال: Nature Materials
سال: 2011
ISSN: 1476-1122,1476-4660
DOI: 10.1038/nmat3195