نتایج جستجو برای: 8 m2s to 554010
تعداد نتایج: 10759956 فیلتر نتایج به سال:
مقدمه: مدلسازی روابط متغیرهای فرآیند خشککردن محصولات غذایی و بررسی سینتیک انتقال جرم و ضرایب نفوذ رطوبت میتواند بهعنوان یک ابزار سودمند برای کنترل بهینه فرآیند و بهبود کیفیت محصول خشکشده نهایی باشد. میوه کیوی دارای طعم و آرومای مطلوب بوده و دارای ارزش تغذیهای بالایی میباشد. مواد و روشها: در این پژوهش تأثیر توان لامپ پرتودهی در سه سطح 200، 250 و 300 وات در فواصل 5، 10 و 15 سانتیمتری از...
This study aimed to investigate the adsorption of CH4, CO2, H2S at a temperature of 298.15 K and pressurerange of 0.1 to 30 atm, and compare the results with experimental data for MIL-47 using GCMC. Themaximum CH4, CO2 and H2S adsorptions were 3.6, 10.45, and 12.57 mol.kg-1, respectively. In addition, theselectivity for binary mixtures of CH4/CO2 and CH4/H2S was calculated. Th...
Images are commonly used on a daily basis for research, information and entertainment. The introduction of digital cameras and especially the incorporation of cameras in mobile phones make people able to snap photos almost everywhere at any time since their mobile phone is almost always brought with them. The fast evolution in hardware enables users to store large image collection without high ...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
In this research, heat transfer enhancement and simultaneous effect of that on pressure drop inside condensers with twisted tape inserts are investigated. A refrigeration system is designed for attaining to maximum level of heat transfer with minimum pressure drop. The test condenser is a double pipe heat transformer with inner and outer diameter of 10.7mm and 12.7mm for internal pipe, respecti...
abstract this study examines the effect of teaching lexical inferencing strategies on developing reading comprehension skill of iranian advanced efl learners. participants were female students of meraj and shokouh institudes of garmsar a quasi-experimental design using two intact advanced classes of efl students at meraj and shokouh institutes. as the first step, a general toefl proficiency te...
Nowadays, global environmental events such as thinning of the ozone layer and climate changes are increasing. These types not only affecting all creatures living on Earth, but also decreasing quality life. For this reason, natural refrigerants which harmful to environment, have been preferred in cooling systems. In study, heat transfer coefficient CO2 was investigated during evaporation process...
The dynamics of water confined in H-ZSM-5 (protonated form the Zeolite Socony Mobil – 5) has been studied using quasielastic neutron scattering (QENS) and classical molecular simulations (MD). QENS measurements probed ZSM-5 samples with Si/Al ratios 15, 40 140 at 2.8 wt% loadings. In lower silica samples, fitting elastic incoherent structure factor (EISF) showed that diffusion was to a sphere (...
An integrated divertor simulation code, SONIC, has been developed in order to predict a self-consistent transport solution of the plasma, neutral and impurities scrape-off layer (SOL) divertor. SONIC code contributed determining design power handling scenarios for Japanese (JA) fusion demonstration (DEMO) reactor. Radiative cooling scenario Ar impurity seeding performance have demonstrated eval...
This paper reports the improved rotor-film evaporator with lower arrangement of separating space, auger-type discharge concentrated organic fruit and berry paste, preheating puree secondary steam. The working surface is heated by a flexible film resistive electric heater radiating type an insulating outer surface. Peltier elements installed in device make it possible to provide low-voltage powe...
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