نتایج جستجو برای: m e a n
تعداد نتایج: 14045815 فیلتر نتایج به سال:
some adipocytokines are cardioprotective or pro-inflammatory for cardiovascular system. chronic infection with chlamydia pneumoniae and helicobacter pylori has been also considered as novel risk factors for atherosclerosis. the main aim of the current population-based study is to investigate the potential link between circulating adipocytokines and chlamydia pneumoniae or helicobacter pylori ig...
in order to evaluate the effect of different mechanical treatments (application of sulphuric acid, boiling water and flooding) on seed dormancy breaking of licorice, an experiment was carried out in randomized complete block design in 2012. moreover, a factorial scheme in rcbd was performed to assess the application of giberalic acid and potassium nitrate treatment as well as stratification and...
introduction small and medium-sized enterprises (smes) bring a broad range of benefits beyond growth of national income, providing important opportunities for employment, and are a key source of an outlet for entrepreneurial creativity and ideas. however, it is estimated that smes are responsible around 60 percent of carbon dioxide emissions and 70 percent of all pollution globally. therefore, ...
the discovery of the antifertility activity of gossypol led scientists and researchers to the development of compounds with antifertility activity that can be used as male contraceptives. these studies resulted in discovery of the antifertility activity of several classes of compounds which have been reported in the literature. this article deals with the synthesis of four new analogues of pyri...
melamine trisulfonic acid (mtsa) as an efficient heterogeneous catalyst has been used for the one-pot preparation of triazolo[1,2-a]indazole-1,3,8-trione and 2h-indazolo[2,1-b]phthalazine-1,6,11-trione derivatives by the three-component condensation reaction of urazoles or phthalhydrazide, dimedone or 1,3-cyclohexanedione, and aldehydes under solvent-free conditions in good to excellent yields ...
در این پایان نامه مترویدهای 3- همبندی که مینیمال هستند و دارای یک تحدید فراگیر ثابت می باشند، مورد مطالعه قرار می گیرند. هدف اصلی این پایان نامه پیدا کردن کران بالای دقیقی برای | e(m?) – e(n) | است که در آن n یک تحدید متروید 3- همبند m است و m? مینور مینیمال 3- همبند m می باشد که n یک تحدید آن است. به علاوه کران مورد نظر را برای حالتی پیدا می کنیم که در آن n یک مینور متروید 3- همبند m است و m? ...
in this study, amino functional groups were chemically bonded to the surface of newly synthesized kit-6 mesoporous magnetite nanoparticles (mmnps) by post-toluene reflux synthesis method. this method treats calcined mesoporous nanoparticles with the functional organosilanes. physical and chemical structures of the synthesized mesoporous magnetite nanoparticle...
accurate estimation of reference evapotranspiration plays a key role in water resources management and irrigation scheduling. the fao penman-monteith (f-p-m) is a reference method for calculation of evapotranspiration that needs temperature, humidity, wind speed and solar radiation. in many stations, it is not an easy task to measure the whole weather variables. thus, in this situation, one mus...
the aim of this study was to evaluate germination of different sesame genotypes on response to temperature. heat and cold tolerance indexes were determined using cardinal temperatures and evaluations of genotypes were conducted to tolerate high or low temperatures using determined indexes. in order to, germination tests were conducted in fixed temperatures incubators with 10, 15, 20, 25, 30, 35...
a simple and efficient method for synthesis of tetrahydropyrimido[4,5-b]quinoline derivatives via three component reaction of aromatic aldehydes, dimedone and 6-amino uracil derivatives using a catalytic amount of sulfonic acid functionalized nanoporous silica (sba-15-pr-so3h) is described. the advantages of this method are easy and clean work-up, high yield, mild reaction condition, reusable c...
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