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News | Archive (2 July 2010) [Page 5]
Emissions of greenhouse gases methane and nitrous oxide underestimated
— 09:56 GMT | EnvironmentThe emission of the greenhouse gases methane and nitrous oxide has been structurally underestimated, as a result of the measuring methods used. This is the conclusion of the scientist Petra Kroon, who carried out research for the Energy research Centre of the Netherlands (ECN) and Delft University of Technology (TU Delft, The Netherlands) into an innovative method for measuring the emission of these gases. Kroon recently obtained her PhD degree for this much more accurate method, which also partly solves the problem of this systematic underestimation…
Search for the bridge to the quantum world
— 09:53 GMT | PhysicsScience fiction has nothing over quantum physics when it comes to presenting us with a labyrinthine world that can twist your mind into knots when you try to make sense of it…
Graphene 2.0: A new approach to making a unique material
— 09:50 GMT | TechnologySince its discovery, graphene - an unusual and versatile substance composed of a single-layer crystal lattice of carbon atoms - has caused much excitement in the scientific community. Now, Nongjian(NJ) Tao, a researcher at the Biodesign Institute at Arizona State University has hit on a new way of making graphene, maximising the material's enormous potential, particularly for use in high-speed electronic devices…
Benchtop biofuels: Fine-tuning growth conditions helps cyanobacteria flourish
— 09:47 GMT | EnvironmentCyanobacteria are among the oldest living forms in nature, responsible for generating the atmospheric oxygen we breathe today. Now Hyun Woo Kim and Raveender Vannela, researchers at the Biodesign Institute at Arizona State University are perfecting the means to culture these microbes - a potentially rich source of biofuels and biomaterials - in significantly greater abundance. The work provides a vital foundation for optimising a device known as a photobioreactor (PBR), in which these energy-packed photosynthetic organisms proliferate…
High potassium? Check your antibiotic
— 09:44 GMT | HealthOlder adults taking the antibiotic combination trimethoprim-sulfamethoxazole (TMP-SMX) - widely prescribed for urinary tract infections - are at increased risk of elevated potassium levels, called hyperkalemia, according to a study appearing in an upcoming issue of the Clinical Journal of the American Society of Nephrology (CJASN). 'We found a significant risk of severe hyperkalemia associated with TMP-SMX,' comments Matthew A. Weir, MD (London Health Science Centre)…
High fructose diet may contribute to high blood pressure
— 09:41 GMT | HealthPeople who eat a diet high in fructose, in the form of added sugar, are at increased risk of developing high blood pressure, or hypertension, according to a study appearing in an upcoming issue of the Journal of the American Society Nephrology (JASN). The results suggest that cutting back on foods and beverages containing a lot of fructose (sugar) might decrease one's risk of developing hypertension…
Can Nintendo Wii game consoles improve family fitness?
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