نتایج جستجو برای: growth factors
تعداد نتایج: 1779092 فیلتر نتایج به سال:
abstract previous studies on willingness to communicate (wtc) have shown the influence of many individual or situational factors on students’ tendency to engage in classroom communication, in which wtc has been viewed either at the trait-level or situational level. however, due to the complexity of the notion of willingness to communicate, the present study suggests that these two strands are ...
مقدمه: از کارامدترین روش های ترمیم آسیب های بافتی، سلول درمانی است. امروزه از سلول های msc (mesenchymal stem cell) به دلیل قدرت بالای تمایز به انواع سلول ها و ترشح فاکتورهای رشد متعددی همچون pdgf (platelet derived growth factor) و sdf-1α (stromal cell-derived factors-1alpha) برای این منظور استفاده می شود. هورمون های جنسی با اثر بر میزان ترشح این فاکتورها، تکثیر و مهاجرت سلول ها و فرایند های ترم...
abstract to study the effects of four types of mulches including wood chips, municipal compost, sawdust and gravel in three different thicknesses on growth of platanus orientalis during two years, an experiment was conducted in mashhad area with semi-arid climate. the research was conducted as split plot based on a completely randomized block design with four replications. treatments included c...
Type 1 diabetes mellitus (T1DM) and other chronic diseases in children are well known to adversely affect linear growth and pubertal development. In the years immediately following the introduction of insulin therapy, short stature was consistently reported in children with T1DM. However, over the past 50 years significant improvement in the prognosis for growth and final height in children wit...
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...
some of arid regions problems of iran are saline and sodic soils. in improvement and reclamation of iranian arid rangelands, some foreign species of atriplex had been imported and adapted for many years ago. the most adapted species was atriplex canescens. at the present research, some environmental factors, vegetative characteristics (na, ca, mg and k), soil properties (moisture, ec, ph, solut...
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