نتایج جستجو برای: d i l a t a n c y m o d e l
تعداد نتایج: 15208728 فیلتر نتایج به سال:
background: metabolic syndrome (ms) is an important risk factor that is associated with vitamin d deficiency, according to recent studies. this study aimed to evaluate the relationship between serum 25-hydroxyvitamin d level and risk of metabolic syndrome in children in birjand. materials and methods: a case-control study on 6 to 18 years old metabolic syndrome patients, this investigation was ...
an extremely facile and efficient procedure which has been developed for the synthesis of dihydropyrrol-2-ones. one-pot four-component reaction of amines, dialkyl acetylenedicarboxylates and formaldehyde in the presence of n,n,n,n-tetramethylguanidinium acetate [tmg][ac] in methanol at ambient temperature provides substituted dihydropyrrol-2-ones in good to high yields. the important aspects of...
a simple and mild procedure for the conversion of anilines into aryl isocyanates is described using the 3-hydroxypropylammonium acetate (hpaa) ionic liquid as a novel and efficient media has been explored in the synthesis of aryl isocyanates from the reaction of substituted urea with sodium nitrite in a water immiscible solvent. this ionic liquid can be easily recovered and reused for many time...
a one-pot multicomponent reaction of aryl aldehydes, 2-amino benzimidazole and ethyl 2-mercaptoacetate is described as an efficient and environmentally method for the synthesis of some novel ethyl 2-((1h-benzo[d]imidazol-2-ylamino)(aryl)methylthio) acetates in the presence of nano-copper y zeolite (ncz) as a catalyst in ethanol at room temperature. after optimizing of reaction conditions...
a new and efficient method has been developed for the synthesis of 4-aryl-7-benzylidene-1,3,4,5,6,7-hexahydro-2h-cyclopenta[d]pyrimidin-2-ones through biginelli-like reaction of cyclopentanone, with urea/thiourea and aromatic aldehyde employing p-dodecylbenzenesulfonic acid (dbsa) as a recyclable catalyst under solvent-free condition. the recovered catalyst was recycled for further runs. the pr...
in this research, nanoporous silica (sba-15) was physically functionalized using2-(2-nitrobenzylideneamino) guanidine compound. this functionalized sba-15 was utilized as a new sorbentfor separation and preconcentration of some lanthanide ions. inductively coupled plasma optical emissionspectrometry (icp-oes) was used as a detection technique. the preconcentration factor of the method is 100and...
objective : the aim of study was to develop a rapid assay, dye labelled monoclonal antibody assay (dlmaa), using non-radioactive organic synthetic dyes for identification of toxic shock syndrome toxin-1 (tsst-1) producing strains of staphylococcus aureus. materials and methods: the assay protocol required only two simple steps; addition of tsst-1 antigen to a nitrocellulose membrane and then ad...
several modalities of drug administration have been investigated to improve bioavailability and to reduce 5-fu related toxicity. the aim of present study was to evaluate the effect of skimmed milk on the absorption and metabolism of 5-fu in rabbits, mice and dogs. it was further aimed to determine its route related toxicity in rabbits. plasma concentration of both 5-fu and its metabolite 5-f...
a complex of cu(ii) with 1-(6-hydroxynaphthalen-2-yl) butane-1,3-dione (hnbd) was synthesized and characterized by elemental analysis, ir, uv and dta-tg-dtg techniques. ir spectra as well as uv-visible absorption measurements indicated that cu(ii) ion was coordinated to the hnbd ligand. the tg-dta-dtg curves showed that thermal decomposition of the anhydrous complex was a two-stage process a...
background and purpose methods: results: conclusion:
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