نتایج جستجو برای: specific activation strategy
تعداد نتایج: 1692049 فیلتر نتایج به سال:
In this work, the effects of temperature, acid concentration, and mechanical activation on dissolution of ilmenite were studied using the statistical design of experiment technique. Mechanical activation was carried out using a planetary ball mill in dry mode, and the resulting structural changes were characterized by the particle size analysis, specific surface area measurements, and X-ray dif...
abstract background: selectable marker gene (smg) systems are critical for generation of transgenic crops. transgenic crop production background: selectable marker gene (smg) systems are critical for generation of transgenic crops. transgenic crop production without using smg is not economically feasible. however, smgs are non-essential once an intact transgenic plant has been established. elim...
We investigated the influence of mental imagery expertise in 15 pen and paper role-players as an expert group compared to gender-matched control computer difficult Vandenberg Kuse rotation task. In this task, participants have decide which two four rotated figures match target figure. The dependent measures were performance speed accuracy. our exploratory investigation, we further examined midl...
one of the disputable challenges inside iran is that does iran has a clear and specific military strategy? there are two different answers to this question. one grope argues that iran not only has had military strategy before iran revolution (1979) but also it has now. the second grope believe that in spite of making army and modern government in iran, there is no national security strategy doc...
abstract this study aimed at investigating the impact of etymology strategy instruction on the development of vocabulary of iranian intermediate efl learners. etymology, knowledge of origin of words, roots, and affixes, has proved to be a controversial issue and a question of long debate with regard to its impact on the process of vocabulary learning. this study employed etymology strategy in ...
Background and Aim: Activated carbon is a most common adsorbent. By emerging of new technologies, the activated carbon production methods need to be improved. The aim of this study was producing powdered activated carbon from Peganum Harmala seed under ultrasound waves for activation and its application for chromium removal from aqueous solutions. Materials and Methods: This experimental stu...
Received: 23 Oct, 2012 Accepted: 21 Dec, 2012 Background & Aims : The objective of this study was to investigate the effects of chronic non specific neck pain on shoulder girdle muscles activation pattern. Materials & Methods: Temporal & intensity of shoulder muscles activation characteristics during a scapular plane elevation were evaluated in two groups with & without chronic nonspecif...
the kinetic of the heterogeneous chemical reaction of aluminum hydroxide and fluosilicic acid was studied. it was found that the diffusion of the reactants through the porous silica coating to the aluminum hydroxide surface and the interfacial chemical reaction between the diffusing reactant and aluminum hydroxide platelets control the overall reaction rate. these two phenomena were studied and...
چکیده: هدف اصلی این مطالعه ی توصیفی تحقیقی در حقیقت تلاشی پساروش-گرا به منظور رسیدن به نتیجه ای منطقی در انتخاب مناسبترین راهکار آموزشی بر گرفته از چارچوب راهبردی مطرح شده توسط والدمر مارتن بوده که به بهترین شکل سازگار و مناسب با سامانه ی آموزشی ایران باشد. از این رو، دو راهکار آموزشی، راهکار ارتباطی و راهکار بازساختی، برای تحقیق و بررسی انتخاب شدند. صریحاً اینکه، در راستای هدف اصلی این پژوهش، ر...
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