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Process may lead to manufacture of nanoscale devices
A University at Buffalo engineer has developed a novel method for assembling nanoparticles into three-dimensional structures that one day may be used to produce new nanoscale tools and machines.
The work could be an important step in fulfilling the immense potential of nanotechnology because it gives scientists and engineers improved control and flexibility in the creation of materials for the manufacture of many nanoscale
Mouse Model May Also Aid In Discovery of Gene Function
Researchers at the University of Pennsylvania School of Medicine have bred a mouse to model human L1 retrotransposons, the so-called “jumping genes.” Retrotransposons are small stretches of DNA that are copied from one location in the genome and inserted elsewhere, typically during the genesis of sperm and egg cells. The L1 variety of retrotransposons, in particular, are responsible for about one third of the human genome.
Researchers at Ohio State University have identified three genes that are involved in the seasonal clock that determines when hamsters reproduce.
While researchers have learned a lot about reproductive clocks in some animals, this study is unique in helping uncover at least part of the genetic basis for determining how the reproductive system shuts off in the fall and restarts in time for spring.
“This study offers some of the first insights into how changes in gene expression are a
Russian scientists of the Kovrov State Technology Academy have proposed a new technology for aluminium alloy welding based on using of two lasers. The first laser removes the oxide film by small portions from the surface of welded components, and the second laser executes the welding. Although the first phase lasts for about one millionth of a second, it is very important, since the refractory oxide film deteriorates the welding strength. The new method is also characterized by one more benefit: the
The findings of this research published on 30th November 2002 in The Lancet suggest that targeting the underlying cause of asthma—rather than treating symptoms of the disorder—could be more effective in reducing severe asthma attacks.
Asthma affects 5.1 million people in the UK and leads to an estimated 1,500 deaths per year, however current treatment methods, based on an assessment of symptoms and a measurement of lung function may not be the most effective.
Asthma is known to be
Eastern Canadian producers can now benefit from a new wheat cultivar with increased tolerance to Fusarium head blight, a fungal disease which has cost the Canadian agri-food industry hundreds of millions of dollars.
The new line, a soft red winter wheat often used for pastries, exhibits nearly four-times fewer mycotoxins when exposed to the fungus, than other wheat varieties on the market. The level of mycotoxins present in wheat can greatly affect yields, as well as grade and market value.