نتایج جستجو برای: solgel method
تعداد نتایج: 1630122 فیلتر نتایج به سال:
abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...
abstract this thesis includes five chapter : the first chapter assign to establish fuzzy mathematics requirement and introduction of liner programming in thesis. the second chapter we introduce a multilevel linear programming problems. the third chapter we proposed interactive fuzzy programming which consists of two phases , the study termination conditions of algorithm we show a satisfac...
در این پایان نامه بر مقاله ی an iterative method for the symmetric and skew symmetric solutions of a linear matrix equation axb+cyd =e نوشته ی xingping sheng و guoliang chen، مروری داشته ایم. در این مقاله دو روش تکراری برای حل معادله ی ماتریسی خطی axb+cyd=e ارائه شده است. روش اول جواب معادله را به صورت متقارن و روش دوم جواب معادله را به صورت پادمتقارن ارائه می دهد. تعدادی مثال های عددی را با...
background: college student community is the one with high risk of tuberculosis (tb). a systemic and standardized administration model for prevention and control of tb is significance in controlling tb spread in universities. currently, the universities in china have not established the comprehensive and standardized administration system for tb prevention and control in college student communi...
how to cite this article: jalili m, jahangiri n, yazdi aa, ashrafzadeh f. the effects of imitative vs. cognitive methods on the speech development of children with autism. iran j child neurol. 2014 winter; 8(1):37-46. objective the present study was performed to examine the effects of two speech therapy methods on six verbal behaviors of autistic children, including oral speech, listening, orga...
in this paper, we use modified laplace decomposition method to solving initial value problems (ivp) of the second order ordinary differential equations. theproposed method can be applied to linear and nonlinearproblems
condition monitoring of bldc motors due to their important applications is gaining more and more significance. rotor eccentricity is one of the most important sources of faults in these motors. up to now, detection methods of this fault under nonstationary conditions are limited to complicated and time-consuming methods using wavelets and cohen class algorithms which are difficult to implement ...
in this article we study ste ensen method to solve nonlinear matrix equation x+a^t x^(-1) a=q, when a is a normal matrix. we establish some conditions that generate a sequence of positive de nite matrices which converges to solution of this equation.
background: reference charts are widely used in healthcare as a screening tool. this study aimed to produce reference growth charts for school children from west malaysia in comparison with the united states centers for disease control and prevention (cdc) chart. methods: a total of 14,360 school children ranging from 7 to 17 years old from six states in west malaysia were collected. a two-stag...
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