نتایج جستجو برای: growth rate
تعداد نتایج: 1689729 فیلتر نتایج به سال:
از آنجا که کیفیت جنین حاصل از بلوغ آزمایشگاهی تخمک (in vitro maturation) در مقایسه با جنین حاصل از تخمک بالغ شده در شرایط طبیعی بدن (in vivo maturation)، پایین تر از حد انتظار است، بهبود مطالعات مربوط به عوامل تنظیمی پتانسیل تکوین تخمک ضروری است. از طرف دیگر پیشگویی و بهبود شایستگی تکوین (developmental competency) تخمک دو مسئله اساسی در تکنیک های تولیدمثلی (assisted reproductive techniques) هست...
the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...
aphids in unsprayed canola (brassica napus linnaeus) fields in isfahan province (central iran) were sampled for two growing seasons, 2011-2013. sampling unit was a whole plant and 20 plants were sampled weekly. in the laboratory, heat-extracting and sub-sampling techniques were used to estimate the density of aphids. to determine the relationship between population growth rate of the aphids and...
proper estimation of droplet growth rate plays a crucial role on appropriate prediction of supersonic separators performance for separation of fine droplets from a gas stream. up to now, all available researches employ empirical or semi-empirical correlations to define the relationship between droplet growth rate (dr/dt) and other operating variables such as temperatures (t and tl), pressure (p...
chemical vapor deposition (cvd) is one of the most important methods for producing carbon nanotubes (cnts). in this research, a numerical model, based on finite volume method, is investigated. the applied method solves the conservation of mass, momentum, energy and species transport equations with aid of ideal gas law. using this model, the growth rate and thickness uniformity of produced cnts,...
abstract an experiment was conducted to study growth analysis and evaluation of change in simple non- structural carbohydrates (sucrose, glucose and fructose) during bulb formation of ghermez azarshahr , zargan, safid naishaboor and safid qom cultivars in randomized complete block design containing three replications. seeds were sown in nursery in early february and seedlings were transplanted ...
background:the present study designed to test effects of defatted soy-fortified wheat bread on the organoleptic properties as well as influences on rat growth rate. methods: defatted soy flour (dsf) was blended with wheat flour with extraction rate of 82-84% at 3, 7, and 7% levels plus 3% sugar. bread produced with these blends compared with regular taftoon bread and was tested for chemical an...
this study was conducted to evaluate the effects of beta plus probiotic, a mixture of bacillius leicheniformic and bacillius subtilis , on the growth performance and intestinal microbial flora of caspian trout ( salmo caspius ). a basal diet was formulated and supplemented with beta plus at 0, 0.5 and 1 g kg -1 , leading to three experimental diets. each experimental diet was randomly assigned ...
the cotton bollworm, helicoverpa armigera (hübner), is one of the important polyphagous pests causing serious loss to many economically important crops in iran. the goal of this experiment was to study the age-stage, two-sex life table of h. armigera on different bean cultivars including white kidney bean (cultivars daneshkadeh, pak, and shokufa), red kidney bean (cultivars akhtar, naz, and say...
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