A team of researchers led by University of Maryland Center for Environmental Science researcher Dr. Sujay Kaushal has been among the first able to quantify the amount of excess nitrogen removed from an urban stream during environmental restoration projects. This breakthrough will allow environmental managers to accurately assess the pollution reducing benefits of stormwater management and urban stream restoration, and could lead to new nitrogen reduction opportunities as public works managers make repairs to our nations aging urban infrastructure.
New Haven, Conn. — Research by Yale scientists shows that males and females have essentially unisex brains — at least in flies — according to a recent report in Cell designed to identify factors that are responsible for sex differences in behavior.
Phrases such as survival of the fittest and every man for himself may seem to accentuate the presence of political and social competition in American culture; however, there obviously are similar instances of inter- and intra-group conflict across almost all known organisms. So what makes competition so prevalent for life and why does it sometimes seem to be preferred over cooperation?
Tiny marks on the teeth of an ancient human ancestor known as the "Nutcracker Man" may upset current evolutionary understanding of early hominid diet.
Using high-powered microscopes, researchers looked at rough geometric shapes on the teeth of several Nutcracker Man specimens and determined that their structure alone was not enough to predict diet.
Researchers at The University of Manchester have produced tiny liquid crystal devices with electrodes made from graphene an exciting development that could lead to computer and TV displays based on this technology.
In human hepatic stellate cells, the key cells involved in both the synthesis and degradation of matrix proteins (mainly collagens) in the liver, the plant extract Cpd 861 can regulate the expression levels of collagen synthesis and degradation-related genes, thus demonstrating an antifibrotic effect.
This research, performed by Dr. Xue-Hai Tan and his colleagues at the Beijing Genomics Institute, was published on March 21, 2008, in the World Journal of Gastroenterology.
Intraductal papillary neoplasm of the bile duct (IPN-B) is a neoplastic lesion preceding invasive intrahepatic cholangiocarcinoma (ICC) and is a new definition of a tumor with papillary growth in the intra- or extra-hepatic bile duct. The authors reported a case of IPN-B with interesting histopathological findings and emphasized that cholangiography is especially helpful for the diagnosis of bile duct dilatation due to the infiltration of carcinoma cells.
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