Science

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New NASA Van Allen Probes Observations Helping To Improve Space Weather Models

Using data from NASA's Van Allen Probes, researchers have tested and improved a model to help forecast what's happening in the radiation environment of near-Earth space -- a place seething with fast-moving particles and a space weather system that varies in response to incoming energy and particles from the sun.

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NASA's Van Allen Probes orbit through two giant radiation belts that surround Earth. Their observations help improve computer simulations of events in the belts that can affect technology in space.

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Toxicity of Commonly-Used Nanoparticles on Human Body Studied in Iran

Iranian researchers from Payam-e Noor University, Tehran Branch, and Yazd University of Medical Sciences investigated toxicity effects of commonly-used nanoparticles, including gold, silver and zinc oxide, on the activity of LDH enzyme in blood serum samples.

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Aptasensors Help Detection of Cancer Protein Marker

Iranian chemistry researchers in association with their colleagues from Romania succeeded in the production of a highly sensitive and simple electrochemical aptasensor to detect protein marker of breast and uterus cancer.

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ESO 137-001: Life Is Too Fast, Too Furious for This Runaway Galaxy

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ASA: Warm Rivers Play Role in Arctic Sea Ice Melt

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Beaufort Sea surface temperatures where Canada's Mackenzie River discharges into the Arctic Ocean, measured by NASA's MODIS instrument. The left image is from June 14, 2012. In the right image (July 5, 2012), warm river waters had broken through a shoreline sea ice barrier to enhance sea ice melt.

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First Light for MUSE

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Powerful 3D spectrograph successfully installed on VLT

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Optimum Stable Conditions Achieved for Growth of Semiconducting Nanostructures on Metals

Iranian scientists in association with researchers from University Putra Malaysia obtained stable optimum conditions for the growth of semiconducting nanostructures on metals and metal oxides.

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Production of Aluminum-Ceria Nanocatalyst through Micro-Emulsion Method

Iranian researchers succeeded in the production of alumina-ceria nanocatalyst through micro-emulsion method.

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Big Step for Next-Generation Fuel Cells and Electrolyzers

Researchers at Berkeley and Argonne National Labs Discover Highly Promising New Class of Nanocatalyst

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These schematic illustrations and corresponding transmission electron microscope images show the evolution of platinum/nickel from polyhedra to dodecahedron nanoframes with platinum-enriched skin.

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Big Step for Next-Generation Fuel Cells and Electrolyzers: Researchers at Berkeley and Argonne National Labs Discover Highly Promising New Class of Nanocatalyst

A big step in the development of next-generation fuel cells and water-alkali electrolyzers has been achieved with the discovery of a new class of bimetallic nanocatalysts that are an order of magnitude higher in activity than the target set by the U.S. Department of Energy (DOE) for 2017. The new catalysts, hollow polyhedral nanoframes of platinum and nickel, feature a three-dimensional catalytic surface activity that makes them significantly more efficient and far less expensive than the best platinum catalysts used in today's fuel cells and alkaline electrolyzers. This research was a collaborative effort between DOE's Lawrence Berkeley National Laboratory (Berkeley Lab) and Argonne National Laboratory (ANL).

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These schematic illustrations and corresponding transmission electron microscope images show the evolution of platinum/nickel from polyhedra to dodecahedron nanoframes with platinum-enriched skin.