نتایج جستجو برای: s i l i c a
تعداد نتایج: 14200971 فیلتر نتایج به سال:
companies are always looking to use all possible means to achieve success and effectiveness. today, is notable the use of people with more subjective and skills specific characteristics. the importance of the issue of spirituality and religion, especially spiritual intelligence, felt the various aspects of new era. one of the necessities in the field of anthropology, is according to scientists ...
background & aim: different species from mint family (lamiaceae) are used as spices and fragrance in food or as medicine against viral or microbial diseases in many countries for generation. lamiaceae family contains 46 genus and 410 species. one of the valuable and medicinal species of this family is ziziphora clinopodioides lam. this species contains the essential oil with pulegone as maj...
the genus tanacetum is one of the most important medicinal plants that contains 26 species in iran, 12 of them are endemic. this paper reports the essential oil composition of tanacetum angulatum willd. tanacetum canacens dc. and tanacetum pinnatum boiss. growing wild in iran. plant flowers and leaves were collected from different locations of north- west of iran. samples were hydro-distilled ...
background and purpose: the aim of this research is to determine the factors contributing to academic attrition among day – course students of lorestan university of medical sciences. methods: in this case – control study all the day – course students who had at least one semester of an average mark under 12 in academic year 2000-2001 were chosen and then the same number of students with an ave...
background and purpose: this study intends to identify the numbers and some characteristics of the teachers of various english courses offered at medical universities affiliated to the ministry of health during the second semester of the academic year 2005-6. methods: the methods used in this research were “gathering existing data”, and “descriptive study”. the research was conducted by sending...
the dual diene/1,3-dipolar character of 1-h-imidazole 3-oxide, hio 1, allows this compound toparticipate in a competitive diels-alder (da)/1,3-dipolar cycloaddition (13dc) reaction toward c=sdouble bond of the electro-deficient sulfonyl methane sfm 2. the b3lyp/6-311++g(d,p) calculatedrelative gibbs free energies indicate that among the studied 13dc and da reactions, former iscompletely preferr...
this research was conducted at the agricultural college of tehran university in 2005 to analyze the effect of use of cytokinin as well as of calcium on durability of rose (illona cultivar). cuttings were taken from rose biennial mother plants, then treated by cytokinin of 0, 0.1, 1and10 micromole per liter and calcium of 0,10,20 and 30 milimole per liter. cut flowers, after harvest, were kept i...
our study performed upon an extended series of 28 compounds of 1,2,4-triazole derivativesthat demonstrate substantial in vitro antimicrobial activities by serial plate dilution method,using quantitative structure-activity relationship (qsar) methods that imply analysis ofcorrelations and multiple linear regression (mlr); a significant collection of moleculardescriptors was used e.g., edge adjac...
the effect of arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria, with the ability to produce acc deaminase enzyme, on water relationships and agronomic indices of sunflower (helianthus annuus l.) cultivars was investigated. the soil used was of an ec equal to 7.6 ds m-1. a greenhouse factorial experiment on the basis of a completely randomized block design with three levels ...
innate lymphoid cells (ilcs) are identified as novel population of hematopoietic cells which protect the body by coordinating the innate immune response against a wide range of threats including infections, tissue damages and homeostatic disturbances. ilcs, particularly ilc2 cells, are found throughout the body including the brain. ilcs are morphologically similar to lymphocytes, express and re...
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