نتایج جستجو برای: which a neutral
تعداد نتایج: 13630923 فیلتر نتایج به سال:
Neutral stability limits for wake flow behind a flat plate is studied using spectral method. First, Orr-Sommerfeld equation was changed to matrix form, covering the whole domain of solution. Next, each term of matrix was expanded using Chebyshev expansion series, a series very much equivalent to the Fourier cosine series. A group of functions and conditions are applied to start and end points i...
هدف از مطالعه حاضر بررسی بر هم کنش یک داروی ضد ویروسی بنام ریباویرین هم چنین کمپلکس پلاتین (ii) که حاوی این دارو می باشد است. این کمپلکس سنتز و توسط روشهای اسپکتروفتومتری، آنالیز عنصری و 1h nmr شناسایی شده است. نوع پیوند کمپلکس و دارو با dna توسط روشهای اسپکتروفتومتری، فلوریمتری، دورنگ نمائی چرخشی و ویسکوزیمتری بررسی شده است. افزایش این دارو و کمپلکس به محلول dna موجب کاهش شدت جذب در اسپکتروفت...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...
Many people believe that language teaching is a neutral practice. However, this belief is not without its own opponents. To many scholars, teaching languages cannot be devoid of teaching cultural values of the target language, which tacitly aims at denigrating cultural values of the community of the learners who are learning it. The ultimate purpose of such cultural oppression, according to the...
one important issue that any material or test designer should bear in mind is to be careful about developing teaching and testing reading materials which would not be to the benefit of a group of readers or examinees and to the detriment of some others. one of the factors which may cause difference between the performances of english learners or test takers is the selection of reading tests wit...
the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...
abstract al- muntazam by ibn al -jawzi is one of the greatest the book ancient book of texts on history of islam in the 6th century.it is very important one;because of including rare reports which are not found any where.in addition to historical reports,his outlook , in which embodies information on mythologies, milal wa nihal (sects and creeds), geography, and political, social and religiou...
this paper presents h∞ control problem for input-delayed systems. a neutral system approach is considered to the design of pd controller for input delay systems in presence of uncertain time-invariant delay. using this approach, the resulting closed-loop system turns into a specific time-delay system of neutral type. the significant specification of this neutral system is that its delayed coeff...
UNLABELLED Dietary plant sterols (PS) reduce serum total and LDL-cholesterol in hyperlipidemic animal models and in humans. This hypocholesterolemic effect is generally ascribed to inhibition of cholesterol absorption. However, whether this effect fully explains the reported strong induction of neutral sterol excretion upon plant sterol feeding is not known. Recent data demonstrate that the int...
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