نتایج جستجو برای: pre
تعداد نتایج: 311802 فیلتر نتایج به سال:
Introduction: Preeclampsia is the main complication of pregnancy
wheat starch is the most common type of starch in iran as well as many other parts of the world with enormous applications in food and non-food products. to improve its physicochemical properties or create new functionalities, starch can be modified by changing its molecular structure. amongst different methods for starch modification, physical methods have received more attention recently. pre...
abstractthe present study explores the impact of corpus-based collocation instruction on intermediate iranian efl learners' writing ability. for this study, 84 iranian learners, studying english as a foreign language in bayan institute, iran, were selected and were randomly divided into two groups, experimental and control. conventional methods of writing instruction were taught to the control ...
the present study aimed to evaluate the effects of ramadan fasting on the level of sex hormones in girls between 9-13 years before age at menarche.this study was conducted on a sample of 58 subjects (age range: 9-13 years), who were divided intotwo groups of fasting (n=31) and non-fasting (n=27). the levels of follicle-stimulating hormone(fsh), luteinizing hormone (lh), progesterone and estradi...
conclusion: in this study group, tnf-α -238 polymorphism was shown to be different in preeclamptic and non-preeclamptic pregnant women. the aa genotype and the a allele may carry an increased risk for developing of preeclampsia. results: there were significant differences between the two groups in tnf-α genotype at position -238 (p < 0.001). in the preeclamptic group, the frequency of the aa ge...
an important concern in rock mechanics is non-homogeneity as joints or fault. this noticeable feature of failures in rock is appearance of slip surfaces or shear bands, the characteristics of that are associated with deformation being concentrated in a narrow zones and the surrounding material remaining intact. adopting the joints as fractures, fractures are well known for their effects on the ...
premixed combustion is widely used for reducing pollutant emission from combustion chambers. however, these systems may be sensitive to complex phenomena such as flashback. in the present study flame, flashback and structure of premixed laminar flames are investigated theoretically. the mathematical model includes the axi-symmetric continuity, navier stocks, energy, and species equations. combu...
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