نتایج جستجو برای: نظریه hot
تعداد نتایج: 113956 فیلتر نتایج به سال:
the flow stress of steel depends significantly on microstructural changes taken place during hot deformation processes. in hot deformation processes, the flow stress of steel is influenced by two main metallurgical phenomena, i.e. recovery and recrystallization, along with its chemical composition and thermo-mechanical parameters. the final mechanical properties of steel are also determined by ...
Objectives: Design and estimate the impacts of a prevention program for part 1 violent crimes in micro-place crime hot spots. Methods: A longitudinal study of crime hot spots using 21 years of crime offense report data on part 1 violent crimes from Pittsburgh, Pennsylvania. Based on kernel density smoothing for a definition of micro-place crime hot spots, we replicate past work on the existence...
Introduction: Hot flushing is one of the most common symptoms related to menopause which can lead to sleep deprivation, physical and psychological tiredness and disturbances in interpersonal relationships. In the recent years, tendency and desire toward alternative treatments, especially phytoestrogens, in relieving this symptom have been increased. Considering that red clover is the rich sourc...
هدف: هدف پژوهش حاضر بررسی ویژگی‌های روان سنجی مقیاس استرس آسیب‌زا کوید-19 بود که اثرات ویروس کرونا را بر جنبه‌های مختلف زندگی مردم ایران مورد قرار می‌دهد. روش:پژوهش توصیفی از نوع همبستگی بود. جامعۀ آماری شامل کلیۀ افرد بزرگسال شهر تهران در دامنۀ سنی 17 تا 72 سال 461 نفر طریق فراخوانی اینترنتی تحقیق شرکت کردند. برای تجزیه‌وتحلیل داده‌ها دو روی‌آورد کلاسیک و نظریۀ سؤال- پاسخ نرمافزارهای Spss نسخ...
introduction: in this study the effect of matricaria recutita extract on acute pain in the presence and absence of flumazenil (antagonist of benzodiazepine) and lesioned paragigantocellularis (pgi) nucleus was investigated. method: wistar male rats (250±20 g) were used. animals were grouped randomly into intact, sham and bilateral lesion of pgi nucleus. intact and lesioned animals, each divided...
heat stress is an effective factor on immune responses, body weight, egg production and egg quality of chickens. the major effect of heat stress is due to decreased food intake and alteration in acid-base balance. during the recent years, efforts to improve laying performance at high temperatures have been relatively successful. supplementation of the diet or drinking water with special nutrien...
سیانوفیتا یا جلبکهای سبز آبی موجودات پروکاریوتی فتوسنتزی می باشند که در اغلب زیستگاههای اکولوژیکی یافت می شوند که گروهی متنوع از جنبه های مورفولوژیک و فیزیولوژیک بوده و علاقه مندی خاصی برای تحقیق در گروه را باعث گردیده است. در این تحقیق شناسایی جلبکهای سبز آبی گرما دوست در سه چشمه آب گرم فاریاب ، تودلویه و فتویه واقع شده در غرب استان هرمزگان مورد مطالعه قرار گرفت. نمونه ها از مکانهای مختلف با د...
in hot dip galvanizing, several parameters such as chemical composition of coating bath, immersion time and surface roughness of specimens could affect microstructure and properties of coating. in this article, the effect of aluminum content, immersion time and surface roughness on structure and properties of alloy layers have been investigated. specimens of low carbon silicon-free steel with d...
Objectives: Design and estimate the impacts of a prevention program for part 1 violent crimes in micro-place crime hot spots. Methods: A longitudinal study of crime hot spots using 21 years of crime offense report data on part 1 violent crimes from Pittsburgh, Pennsylvania. Based on kernel density smoothing for a definition of micro-place crime hot spots, we replicate past work on the existence...
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