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New technique studies how plastic solar cells turn sunlight into electricity
12-11-2006 · EurekAlert!A new analytical technique, featured on the cover of this week's issue of the Journal of Physical Chemistry B, could lead to the development of cheaper, more efficient solar cells. The information that this technique provides is a critical step in the development of a new class of solar cells, which promise significant savings in production costs compared to conventional silicon-based cells.
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Keywords: technique, studies, plastic, solar, cells, turn, sunlight, electricity, study, cell
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- New medical technique punches holes in target cell membranes to treat tumors
02-12-2007 · EurekAlert!
A large animal study has shown that certain microsecond electrical pulses can punch nanoscale holes in the membranes of target cells without harming collagen fibers and other vascular tissue structures. The new medical technique, called irreversible electroporation (IRE) and developed at UC Berkeley, is a potential breakthrough in minimally invasive surgical treatments of tumors.
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- HIV is a 'double hit' to the brain
08-15-2007 · EurekAlert!
New evidence reported in the August issue of Cell Stem Cell, a publication of Cell Press, offers a novel perspective on how the HIV/AIDS virus leads to learning and memory deficits, a condition known as HIV-associated dementia. A protein found on the surface of the virus not only kills some mature brain cells, as earlier studies had shown, but it also prevents the birth of new brain cells by crippling "adult neural progenitors," the new study finds.
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- Study: cow-powered fuel cells grow smaller, mightier
08-21-2007 · EurekAlert!
Cows could one day help to meet the rise in demand for alternative energy sources, say Ohio State University researchers that used microbe-rich fluid from a cow to generate electricity in a small fuel cell. This new microbial fuel cell is a redesign of a larger model that the researchers created a few years ago. The new cell is a quarter of the size of the original model, yet can produce about three times the power.
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- New plant study reveals a 'deeply hidden' layer of the transcriptome
12-27-2007 · EurekAlert!
Cells keep a close watch over the transcriptome -- the totality of all parts of the genome that are expressed in any given cell at any given time. Researchers at the Salk Institute for Biological Studies and the University of Missouri-Kansas City teamed up to peel back another layer of transcriptional regulation and gain new insight into how genomes work.
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- Study identifies new regulator of fat metabolism
06-05-2007 · EurekAlert!
Over the past several years, animal studies have shown that high-fat, low-carbohydrate "ketogenic" diets cause demonstrable changes in metabolism and subsequent weight loss. Now, researchers at Beth Israel Deaconess Medical Center (BIDMC) have identified a key mechanism behind this turn of events. Their findings, which appear in the June 2007 issue of Cell Metabolism, demonstrate that a liver hormone known as FGF21 is required to oxidize fatty acids -- and thereby burn calories.
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- Spot On: Printing flexible electronics one nanodot at a time
09-15-2007 · Science News Online
A new high-resolution printing technique could make flexible electronics such as plastic displays and solar cells easier to produce.
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- Regulatory T cells require WASp if they are to prevent self-destruction
01-11-2007 · EurekAlert!
In humans, mutation of the gene encoding a protein known as WASp leads to susceptibility to infections and systemic autoimmunity. Most studies have focused on understanding how WASp deficiency causes defects in T cell activation, but a new study shows that in mice and humans a population of T cells known as regulatory T cells, which prevent other immune cells attacking the body's and causing autoimmunity, are also impaired in the absence of WASp.
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- Penn study points to new direction for pancreas cell regeneration
04-03-2007 · EurekAlert!
Past studies in tissue culture have suggested that one type of pancreas cell could be coaxed to transform into insulin-producing islet cells. Now, researchers at the University of Pennsylvania School of Medicine have demonstrated that these pancreatic acinar cells do not become insulin-producing cells in an animal model. However, they did show that injured pancreatic cells readily regenerate back into healthy acinar cells, which has implications for treating cancer and inflammation of the pancreas.
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- Nanoparticle technique could lead to improved semiconductors
08-06-2007 · EurekAlert!
Devices made from plastic semiconductors, like solar cells and light-emitting diodes, could be improved based on information gained using a new nanoparticle technique developed at the University of Texas at Austin.
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- Solar cells can take the heat
01-09-2008 · EurekAlert!
Michael Grдtzel and his a team of researchers at the Ecole Polytechnique Federale de Lausanne in Switzerland have fabricated a solvent-free dye-sensitized solar cell based on a binary ionic liquid electrolyte. These devices show a light-conversion efficiency of 7.6 percent under simulated sunlight conditions, which sets a new record for a solvent-free device.
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