نتایج جستجو برای: specific characteristics like size
تعداد نتایج: 2616496 فیلتر نتایج به سال:
In this study, the synthesis of ceria (CeO2) nanoparticles (NPs) was examined by the biosynthesis method. Then, enzyme-like features of synthesized nanoceria were examined. Peroxidase enzyme from fig (Ficus carica) was used as a synthesis and stabilizer reagent. Furthermore, it was investigated whether the obtained nanoceria has superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) ac...
burnout is a response to the chronic work stress which is prevalent mostly among the people who do people job, like teaching. the purpose of this study was to develop a valid and reliable instrument that can measure burnout in foreign language teachers. although some widely used instruments were developed before which measured burnout in teachers, a specific instrument which include specific sy...
Changes introduced to the theories of advantage and the rejection of enterprises homogeneity hypothesis revealed the characteristics of enterprises and environmental factors such as the degree of market competitiveness in trade. It diverted the trade approaches from macroeconomic level and price variables like foreign exchange and inflation rates into the microeconomic level including the size ...
Methods for sample size calculations in ROC studies often assume independent normal distributions for test scores among the diseased and nondiseased populations. We consider sample size requirements under the default two-group normal model when the data distribution for the diseased population is either skewed or multimodal. For these two common scenarios we investigate the potential for robust...
This is an empirical analysis which depicts the preference significance of private commercial banks to establish the importance of various criteria that attracts the young customers. In here, this study segregates the different criteria which are significantly more important in inspiring selection over time and those which have been considerably less important. For this study, sample size was 1...
cation exchange capacity and specific surface area are among some of the important soil characteristics the direct measurement of which is laborious, costly and time consuming. therefore, fractal dimension of particle size distribution has been widely studied in relation with many such dynamic and static processes as transmission of water and solutes, water holding capacity, heat storage and co...
A regular graph design RGD(v; k; r) is a design on v points with blocks of size k and constant replication number r, such that any two points belong to either 1 or 1 +1 common blocks, for some constant 1. We investigate resolvable regular graph designs with block size 4. In particular we determine the spectrum of such designs for v 16.
abstract since heubners (1985) pioneering study, there have been many studies on (mis) use/ non-use of articles by l2 learners from article-less and article languages. the present study investigated how persian l2 learners of english produce and interpret english definite descriptions and demonstrative descriptions. it was assumed that definite and demonstrative descriptions share the same cen...
in this investigation the effect of external field on the electron density of nanostructures of cds, cdse, cdte, gaas and polymeric structure of three, four, five and six units of cds as a kind of nanosolar cells has been studied theoretically. as modeling this system in nanodimension, molecular structures has used. specific properties of molecular structures permit us to consider different sym...
abstract the present research is prepared to study the culture of tea consuming among iranian. the case group which was statistically used for this study was people of lahijan , about four hundred wich were chosen according to their age , gender , education and occupation , randomly selected to fill the questionnaire . then the data collected through the questionnaire was analyzed according ...
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