نتایج جستجو برای: b and o groups
تعداد نتایج: 17240707 فیلتر نتایج به سال:
Background and Aims: Preeclampsia is one of the causes of maternal mortality whose leading cause is still unknown. This study was conducted to investigate the relation between blood group and pre-eclampsia in primipara women. Materials and Methods: This case-control study was performed on 100 pirmipara women in Gonabad city. The samples were assigned, by census, into two groups of case (with p...
statement of the problem recent studies have shown a relation between some abo blood types and increased susceptibility to fungal infections. purpose the aim of this study was to determine the frequency of blood groups in patients with denture stomatitis. materials and methods in this descriptive cross-sectional study, diagnosis of denture stomatitis in 100 patients with complete denture, was m...
dendrimer synthesis strategies now provide virtual control of macromolecular nanostructures as a function of size and surface/interior functionality. these strategies involve the covalent assembly of hierarchical components reactive monomers , branch cells or dendron’s around atomic or molecular cores according to divergent/convergent dendrite branching principles.combinon of two or more dendri...
the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...
the purpose of this study is identifying effective factors which make customers shop online in iran and investigating the importance of discovered factors in online customers’ decision. in the identifying phase, to discover the factors affecting online shopping behavior of customers in iran, the derived reference model summarizing antecedents of online shopping proposed by change et al. was us...
there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...
background: h e r2/ n eu i so n e o ftheepi de rmalg r owth f actor r e c e pt o rsfami l i e s andsee m stohaveprognosticsignificanceofsomesolid t umors.theo b jecti v eof thisstu d yistoevaluatet h epossi b ilityofher2ex p ressioningastricca n cersand the p o s si b le r e lat i o n ship o fh e r2withtumo r ’scli n icopat h o l o gicpara m e te r sa n d a l s oits pr o gno s tic r o l e . m...
the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...
Mixture of the trimethylchlorosilane, magnesium and hexamethylphosphorictriamid, HMPT, react with epoxyketones to produce tetrasiliciated compounds, which are the results of the addition of two trimethylsilyl (TMS) groups to the carbonyl function and two TMS groups to the expoxide cycle. After elimination of (Me Si) O siliciated enoxysilanes are obtained which under acidic conditions gives ...
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
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