نتایج جستجو برای: effective stress analysis
تعداد نتایج: 3699724 فیلتر نتایج به سال:
in this article, thermo-elastic-behavior of a thick-walled cylinder made from a polystyrene nanocomposite reinforced with functionally graded (fg) single-walled carbon nanotubes (swcnts) was carried out in radial direction while subjected to a steady state thermal field. the swcnts were assumed aligned, straight with infinite length and a uniform layout. two types of variations in the volume fr...
Results: Our analyses showed that stress symptoms were negatively correlated with effective coping, stress management, and general mood dimensions of the Emotional Intelligence Questionnaire. They were also positively correlated with ineffective coping and Type A behaviors. Being female also significantly predicted stress symptoms. When the participants were grouped according to Type A Personal...
total fertility rate relates to the number of children that a woman bears in the fertility period of her life. fertility function is one of the most important health and population indicators. this indicator affects social, health, economic and cultural factors. this study is an ecological or correlative one. factors affecting total fertility rate in iran in the year 2000 are studied in this pa...
the objective of this research was to study the drying characteristics of powderedagricultural residues. drying experiments of wheat straw (triticum aestivum) wereconducted at four temperatures of 50, 60, 70, and 80°c by a thermogravimetric analyzer.drying temperature had a significant effect on the moisture change and drying time.there was no constant drying rate period, but a short rising rat...
The purpose of this study was to describe the correlations between wheat grain yield (GY) and its components, under environmental stress and non-stress conditions, and recognition of the most effective yield components and their development stages in making interaction with the environment. Two generations of F3 and F4, produced from a cross between Oste-Gata (drought tolerant) and Massara-1 (s...
در این پایان نامه روش خمکاری کششی چرخان به دلیل مزایا و کاربردهای فراوانی که در صنعت دارد. شبیه سازی شده است. این روش خمکاری علاوه بر سادگی به دلیل آنکه از مندرل کمک می گیرد قادر به ایجاد خمهایی بدون عیب و با شعاع خم کوچک می باشد. در این کار تغییرات تنش و کرنش لوله در حین فرآیند خمکاری کششی چرخان و همچنین اثر اصطکاک بین قالب ها و لوله، روی ضخامت و تغییر شکل سطح مقطع لوله مورد بررسی قرار گرفت. ش...
In this paper, the homotopy method is used for stress analysis of rotating disk subjected to thermal load in marine gas turbine engine. Apply the thermal loading on the disk with exponential thickness distribution by using the homotopy method and Considering the physical and mechanical properties variations with temperature, are the most important aspects of innovation in this paper. Disc thick...
BACKGROUND The optimal imaging strategy for patients with stable chest pain is uncertain. OBJECTIVE To determine the cost-effectiveness of different imaging strategies for patients with stable chest pain. DESIGN Microsimulation state-transition model. DATA SOURCES Published literature. TARGET POPULATION 60-year-old patients with a low to intermediate probability of coronary artery disea...
Objective: The aim of this research was to conduct a content analysis on addiction prevention educational packages related to Welfare Organization based on addiction prevention components. Method: A qualitative research method and content analysis based on Shannon entropy model were used for the conduct of this study. The statistical population of the study included all educational packages of ...
Introduction: This study aimed to compare the effectiveness of the emotion regulation method based on the Gross model and muscle relaxation technique on perceived stress, anxiety, and resilience in patients with coronary heart disease (CHD). Material & Methods: This study quasi-experimental study had a pretest-posttest design and follow-up and control groups. The statistical population included...
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