A series of four random copolyesters were synthesized by the polycondensation of a chalcone diol by making use of two diacid chlorides namely terephthaloyl chloride and succinyl chloride. The four chalcone diols involved are (2E)-1,3-bis(4-hydroxyphenyl)prop-2-en-1-one, (2E)-1-(4-hydroxyphenyl)-3-(4-hydroxy-3-methoxyphenyl)-prop-2-en1-one, (2E)-1-(4-hydroxy-3-methoxyphenyl)-3-(4-hydroxyphenyl)-...

Estudou-se a interação de atrazina (AT), propazina (PROP), desetil-atrazina (DEA), deisopropilatrazina (DIA) e hidroxi-atrazina (HAT) com o argilomineral vermiculita saturado com K (VTK) e com VTK modificada pela incorporação de hexadeciltrimetil-amônio (HDTMA-VT) no espaço interlamelar. A VTK bruta teve interação desprezível com AT, PROP e DEA, interação moderada com DIA e forte interação com ...

Bregman Distan es Stephen Della Pietra, Vin ent Della Pietra, and John La erty February 10, 2002 CMU-CS-01-109R S hool of Computer S ien e Carnegie Mellon University Pittsburgh, PA 15213 Abstra t We formulate and prove a onvex duality theorem for Bregman distan es and present a te hnique based on auxiliary fun tions for deriving and proving onvergen e of iterative algorithms to minimize Bregman...

BACKGROUND We investigate the role of the C-terminal coiled coil of the secondary proline porter ProP in contributing to Cronobacter sakazakii osmotolerance. FINDINGS The extended C-terminal domain of ProP1 (encoded by ESA_02131) was spliced onto the truncated C-terminal end of ProP2 (encoded by ESA_01706); creating a chimeric protein (ProPc) which exhibits increased osmotolerance relative to...

conclusions acute and chronic administration of ellagic acid had anxiolytic property. also, the most effective dose of ellagic acid was 30 mg/kg. pretreatment with flumazenil reversed the beneficial effect of ellagic acid and diazepam on anxiety. it is likely that the anxiolytic effect of ellagic acid is largely mediated by activation of gabaa receptor. results acute and chronic application of ...

objective(s): global cerebral ischemia-reperfusion (gcir) causes disturbances in brain functions as well as other organs such as kidney. our aim was to evaluate the protective effects of ellagic acid (ea) on certain renal disfunction after gcir. materials and methods: adult male wistar rats (n=32, 250-300 g) were used. gcir was induced by bilateral vertebral and common carotid arteries occlusio...

While desi ning radial basis function neural networks for classification, kzzy clustering is often used to position the hidden nodes in the input space. The main assumption of the clustering is that similar inputs produce similar out uts. In other words, it means that any two in ut patterns t o m the same cluster must be from the same cfass. Generalization is possible in the radial basis functi...

ProP is an osmoregulatory compatible solute transporter in Escherichia coli K-12. Mutation proQ220::Tn5 decreased the rate constant for and the extent of ProP activation by an osmotic upshift but did not alter proP transcription or the ProP protein level. Allele proQ220::Tn5 was isolated, and the proQ sequence was determined. Locus proQ is upstream from prc (tsp) at 41.2 centisomes on the genet...