نتایج جستجو برای: 0320
تعداد نتایج: 57 فیلتر نتایج به سال:
In Escherichia coli and Salmonella typhimurium it has been shown that selenophosphate serves as the selenium donor for the conversion of seryl-tRNA to selenocysteyl-tRNA and for the synthesis of 2-selenouridine, a modified nucleoside present in tRNAs. Although selenocysteyl-tRNA also is formed in eukaryotes and is used for the specific insertion of selenocysteine into proteins, the precise mech...
We prove that a very weak form of the PoincarC inequality implies a Sobolev-Poincare ineq~iality in the abstract setting of metric spaces. Sobolev rencontre Poincare Version jkzngaise abrigie L e but de cette Note est la demonstration du theoreme 1 qui affirme que, dans le cadre tres general des espaces metriques, une inegalite fiaible de Poincare entraine une inegalite de Sobole\--Poincare. Ce...
A cell culture line of human small cell (oat cell) carcinoma of the lung (NCI-H69) was studied for growth factor requirements for replication in serum-free medium. By a series of addition experiments, the combination of selenium (3x10~8 M), hydrocortisone (1CT8 M), insulin (5 fig/ml), transferrin (100 fig/ml), and 17ß-estradiol (10~8 M) (SHITE) added to Roswell Park Memorial Institute Medium 1...
Hepatocellular carcinoma (HCC) is a common cause of cancer morbidity and mortality in Asia and Africa. Epidemiological studies have found that dietary exposure to aflatoxin B1 (AFB1) and chronic infection with hepatitis B virus are two major risk factors for HCC. We have collated the incidence and mortality data of malignant tumors from 1973 to 1999 in Zhuqing Village, Fusui County, an area wit...
how to cite this article: chiabi a, nguefack s, mah e, nodem s, mbuagbaw l, mbonda e, tchokoteu pf, doh a. risk factors for birth asphyxia in an urban health facility in cameroon. iran j child neurol. 2013 summer; 7(3):46-54. objective the world health organization (who) estimates that 4 million children are born with asphyxia every year, of which 1 million die and an equal number survive with ...
Retroviral-mediated delivery of the P140K mutant O-methylguanine-DNA methyltransferase (MGMT) into hematopoietic stem cells (HSC) has been proposed as a means to protect against dose-limiting myelosuppressive toxicity ensuing from chemotherapy combining O-alkylating agents (e.g., temozolomide) with pseudosubstrate inhibitors (such as O-benzylguanine) of endogenous MGMT. Because detoxification o...
I first summarize Baltag and Smets’ contribution to this volume, and praise their work. Then I compare the anti-lexicographic plausibility update that they propose to a proposal by Aucher, as an illustration of the difference between a qualitative and a quantitive formulation of updates. I quote Spohn’s original work that is at the root of research in plausibility updates and of the notion of a...
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