1,3-dipolar cycloaddition reaction of 1 mol or 2 mol of dibenzalaceton with 1 mol of non-stabilized azomethinylides generated in situ by decarboxylative condensation of isatin and proline or sarcosine give the novel new spiro-oxindolo(pyrrolizidines/ pyrrolidines) instead of bis-spirooxindolo( pyrrolizidines/ pyrrolidines).

an investigation of chlorophyll quick fluorsence variations was made in the reaserch field of islamic azad university- karaj in 2007. the experimental design was a split plot one in form of a complete randomized block design with 4 replications. drought stress was cosiderded in three levels of 40%, 60%, and 75%, on the basis of depletion of soil moisture as the main factor and the factor of mic...

background and purpose: course-based assessment is a method to gather, analyze, disseminate, and use course data to improve student learning. we assessed the associations between medical students’ scores in basic sciences and general courses in a university in iran and compared these scores with their scores in comprehensive exam. methods: we collected the scores of medical students in their co...

an efficient, one-pot, four-component procedure for the synthesis of a small library of new chiral spiro- oxindolopyrrolidines with high regio-, diastereo- (>99:1 dr), and enantioselectivity (up to 80% ee) is described. in this process, the regio- and stereochemical 1,3-dipolar cycloaddition of azomethine ylides, which were generated insitu by the reaction of isatin derivatives and sarcosin,wit...

hematopoietic cord blood (cb) stem cell transplantation has more advantages to other cell sources because of lower graft versus host disease (gvhd). interleukin-15(il-15) is an immunoregulatory cytokine, known to enhance cytolytic function of cord natural killer (nk) cells. the aim of this study was to investigate the effect of il-15 on nk cytotoxicity simultaneously in different cell death sta...

the main purpose of this paper is to examine the relevance of islamic microfinance in the light of ongoing erosion of confidence in the viability of current financial system, full of speculatory finance in the prevailing global financial market. for example, the sub-prime crisis of 2007-2008 in the us with its effects all over the world was mainly due to the inadequate market discipline which i...

background: colorectal cancer is one of the most important causes of morbidity and mortality in the world. it has been suggested that tissue inhibitor of metalloproteinase-1 (timp-1) plays a particular role in cancer promotion. the objective of the present study was to compare the effect of repeated measurement of carcinoembryonic antigen (cea) and timp-1 plasma levels in a follow-up response t...

background: insecticide poisoning is a major public health problem in the world, particularly in developing nations, its usage has increased in recent and past thus increased even its misuse to commit suicide. methods: this retrospective study was carried out at department of  forensic medicine & toxicology, govt. mohan kumaramangalam medical college  hospital  salem, tamil nadu, india with the...

gypsum found in the soil beneath the foundation of structures, specially hydraulic structures, can cause serious damage to them. the mechanical behavior of gypsiferous soils has not so far been investigated in detail except for the works of petrukhin (1993). here, it has been tried to investigate the mechanical behavior and the effect of soil being leached on settlement and strength of these ki...

chemical constituents of the essential oil of flowers of lavandula officinalis chaix. growing in isfahan, iran, were studied by tlc and gas chromatography-mass specrtometery (gc-ms) methods. twelve components which constitute 94.8% of the examined oil were identified. the main constituents were linalool (34.1%), 1,8-cineole (18.5%), borneol (14.5%), camphor (10.2%), terpinen-4-ol (4.5%), linaly...