نتایج جستجو برای: surface area to volume ratio
تعداد نتایج: 10961941 فیلتر نتایج به سال:
cyproterone acetate (ca) has been loaded to liposome by solvent evaporation and thin film formation technique. the effects of some formulation variables such as temperature of organic solvent evaporation, rotary evaporator speed, volume of organic solvent, volume of balloon and temperature of hydrating buffer has been evaluated. the data showed that bigger balloon with higher surface area has b...
fecundity is one of the important indicators of reproduction biology in fishes especially in rearing and restocking management of endangered species such as sturgeon. the fecundity of stellate sturgeon (acipenser stellatus pallas, 1771) was studied in 50 specimens captured by gill net (mesh size= 100 mm) and seine net in different fishing areas along the southeastern part of the caspian sea fro...
In order to assess the effect of salinity on root traits and yield of two wheat cultivars, an experiment was conducted in Agricultural, Medical and Industrial Research School, Nuclear Science and Technology Research Institute, Karaj, Iran, using factorial experiment based on complete randomized design with 3 replications. The first factor included sensitive wheat cv. (Tajan) and tolerant cv. (B...
in this paper we develop a new approach for land leveling in order to improve the topology of a large area for irrigation or civil projects. the objective in proposed model is to minimize the total volume of cutting so that technical requirements of land leveling such as suitable slope and standard ratio of cutting to filling and maximum penstock point’s height are considered. we develop a warp...
Electrospinning is a simple and versatile technique that relies on the electrostatic repulsion between surface charges to continuously draw nanofibers from a viscoelastic fluid. Electrospinning can generate nanofibers with a number of secondary structures. Surface and/or interior of nanofibers can be functionalized with molecular species or nanoparticles during or after an electrospinning proce...
The effect of protein binding on drug penetration into blister fluid was evaluated by using cefonicid, ceftizoxime, and cefotaxime. Drug concentrations in a chamber with a high surface area/volume ratio (i.e., paper disk) follow changes in serum more closely than do those in a chamber with a low surface area/volume ratio. Both the area under the concentration-time curve ratio and the concentrat...
Background: Morphological changes of the cells infected with rubella virus cannot be observed easily. Estimation of the size of the cultured cells can be a valuable parameter in this condition. This study was conducted to find answers to the following questions:How much time after infection with rubella virus, the volume and surface area of the Vero cells and their nuclei get started to change?...
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...
Using of nanoparticles in Composite solid propellant formulations has extended in recent years. Nano additives increases burning rate of these formulations and consequently improves performance, because of their high reactivity potential, high catalytic activity and high surface area to volume ratio. However, poor dispersibility of nanoparticles leads to agglomeration in the binder and thus r...
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