نتایج جستجو برای: equations of kinetics

تعداد نتایج: 21196551  

Journal: :iranian journal of science and technology (sciences) 2015
r. arab

the aim of this paper is to show how some measures of noncompactness in the banach space of continuous functions defined on two variables can be applied to the solvability of a general system of functional integral equations . the results obtained generalize and extend several equations . an illustrative example is also presented .

Journal: :مدیریت خاک و تولید پایدار 0
عادل ریحانی تبار استادیار دانشگاه تبریز معصومه مهدی زاده دانشجوی سابق ارشد شاهین اوستان دانشیار

abstractbackground and objectives:the phosphorus is second limiting nutrient in soil for crop production after nitrogen. mobility and availability of phosphorus (p) in soils is affected by phosphorus desorption characteristics. information about the effect of organic matter on kinetics and thermodynamics of p desorption in calcareous soils of east azerbaijan province is limited. the objective o...

ژورنال: علوم آب و خاک 2013

Information about potassium (K) release characteristics in the Chaharmahal-va-bakhtiari soils is limited. In this study, K release kinetics of fifteen calcareous soils was investigated. Soil samples were extracted using successive extractions with 0.01 M CaCl2 and citric acid solutions for 2-2017 h at 25±1 0C. Moreover, soil K was determined using 6 chemical extraction methods. The results show...

In this research, Fischer Tropsch synthesis (FTS) has been modeled in the fixed bed chromatographic reactor for the first time by applying a rather complex dispersed plug flow model for fluid phase and linear driving force (LDF) model for adsorbent. Model equations are dynamic, multi-component, non-linear and heterogeneous including reaction and adsorption simultaneously Complex kinetics fo...

Journal: :iranian journal of microbiology 0
seyedvesal hosseini chemical engineering department, islamic azad university, shah rood branch, shah rood, iran. zahra saffari pilot nanobiotechnology department, pasteur institute of iran, tehran 13164, iran. ali farhanghi pilot nanobiotechnology department, pasteur institute of iran, tehran 13164, iran. seyedmohammad atyabi pilot nanobiotechnology department, pasteur institute of iran, tehran 13164, iran. dariush norouzian pilot nanobiotechnology department, pasteur institute of iran, tehran 13164, iran.

background and objectives: proteases are a group of enzymes that catalyze the degradation of proteins resulting in the pro- duction of their amino acid constituents. they are the most important group of industrial enzymes which account for about 60% of total enzymes in the market and produced mainly by microorganisms. the attempts were made to study the kinetic parameters of protease produced b...

Journal: :تحقیقات آب و خاک ایران 0
حمید جباری دانشجوی کارشناسی ارشد خاک شناسی دانشگاه شاهد عبدالامیر بستانی استادیار گروه خاک شناسی دانشگاه شاهد

this study was done with the aim of investigating the kinetics of available phosphorus changes in treated soils with municipal solid waste compost, fertilizer and the mixture of these in two levels of first and second percent in eight calcareous soil samples and in a period of zero to 3600 hours in incubation conditions (fc moisture and 250c). the results showed that with time increasing, extra...

Alireza Ganjovi, Zahra Dehghani Fard

In this paper, the effects of plasma discharge parameters on the nano particles formation process in a plasma enhanced chemical vapor deposition (PECVD) reactor using a model based on equations of ionization kinetics for different active species are studied. A radio frequency applied electric field causes ionization inside the reactor and consequently different reaction schemically active speci...

ژورنال: علوم آب و خاک 2014

In Iran, no research has yet been performed on potassium release from feldspar in comparison with that from muscovite. The objective of this research was to compare potassium release kinetics of these minerals as influenced by organic and inorganic extractants using successive extraction method. The experiment was carried out in a completely randomized design with a factorial combination. Treat...

پایان نامه :وزارت بهداشت، درمان و آموزش پزشکی - دانشگاه علوم پزشکی و خدمات بهداشتی درمانی استان کرمان 1386

چکیده ندارد.

Journal: :تحقیقات آب و خاک ایران 0
مجتبی بارانی مطلق حسن توفیقی

the release of fe from soil solid phases into soil solution is a dynamic process that regulates the continuous supply of this element to growing plants. to ascertain the pattern of fe release, the kinetics of fe release from six soils by diethylenetriaminepentaacetic acid (dtpa) solution were investigated using soil samples taken from two different agroclimatic regions of iran. all soils were c...

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