نتایج جستجو برای: strain and stress control

تعداد نتایج: 17106423  

In this paper, a reinforced concrete(RC) bridge built in an interchange, in the city of Kerman (a city located in south of Iran) is examined by the Structural Health Monitoring (SHM) system. During the construction of this bridge such as; the main beams, slab, and retaining walls, some Electrical Strain Gauges were mounted on the main reinforcements at different locations within the body of thi...

A Kazemian A.R Ghasemi, M Moradi

In this research, the analytical and numerical investigation of a cylindrical shell made of functionally graded materials (FGMs) reinforced by laminated composite subjected to internal pressure is presented. Using the infinitesimal theory of elasticity, the analytical solution of stress and strain in vessels made of FGMs is studied first. It is assumed that the elasticity modulus follows a powe...

Journal: :Applied and environmental microbiology 2005
Hiroshi Takagi Miki Takaoka Akari Kawaguchi Yoshito Kubo

During the fermentation of sake, cells of Saccharomyces cerevisiae are exposed to high concentrations of ethanol, thereby damaging the cell membrane and functional proteins. L-proline protects yeast cells from damage caused by freezing or oxidative stress. In this study, we evaluated the role of intracellular L-proline in cells of S. cerevisiae grown under ethanol stress. An L-proline-accumulat...

A Bakhshizadeh M Davoudi Kashkoli M Zamani Nejad,

Time-dependent creep analysis is presented for the calculation of stresses and displacements of axisymmetric thick-walled cylindrical pressure vessels made of functionally graded material (FGM). For the purpose of time-dependent stress analysis in an FGM pressure vessel, material creep behavior and the solutions of the stresses at a time equal to zero (i.e. the initial stress state) are needed....

Journal: :international journal of civil engineering 0
m. mojezi no. 21, arghavan, north dibaji, dr. lavasani st., tehran, iran m.k. jafari no. 21, arghavan, north dibaji, dr. lavasani st., tehran, iran m. biglari razi university, kermanshah, iran

experimental study of the cyclic behavior of unsaturated materials is more complex than that of the saturated materials due to the required equipment, experience and time. furthering investigations in the field of unsaturated materials is necessary to better understand its complexity and sensitivity of unsaturated cyclic parameters to different determinants such as suction path, stress path, lo...

ژورنال: Journal of Research and Health 2017

Heat stress is one of the harmful factors in workplaces. Asphalt workers are exposed to thermal stress due to the open environment and process. The aim of this study was to assess the heat stress and strain in asphalt workers. This study was conducted on 29 employees of asphalt workstation. The heat stress was measured based on Wet-Bulb Globe Temperature (WBGT). Also, physiological parameters s...

Journal: :international journal of endocrinology and metabolism 0
ramesh ahmadi department of physiology, islamic azad university, qom, ir iran; islamic azad university of qom, 15 khordad st, qom, ir iran. tel:+98-2537780001, fax:+98-2137770001 saeede pishghadam islamic azad university, qom, ir iran fatemeh mollaamine department of chemistry, islamic azad university, qom, ir iran mohammad reza zand monfared department of chemistry, islamic azad university, qom, ir iran

background the aim of the present study was to investigate the effect of ginger and glibenclamide on oxidative stress markers. oxidative stress is caused by an unbalance between a relative overload of oxidants and depletion of antioxidants, as implicated in the pathogenesis of several chronic diseases, including atherosclerosis and diabetes mellitus. regarding the role of oxidative stress in th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده علوم تربیتی و روانشناسی 1393

the purpose of this study was to investigate the relationship between teachers’ class management practices with students’ self- regulated learning and academic self-efficacy. in this study relating to the management class, three dimensions, (training management, people management and behavior management) and three style (interventionist, interactionist and non-interventionist) was considered. r...

H. Moslemi Naeini, M. Maerefat and M. Soltanpour,

In hot forming process, the workpiece undergoes plastic deformation at high temperature and the microstructure of the workpiece changes according to the plastic deformation. These changes affect the mechanical properties of workpiece. In order to optimize this process, both the plastic deformation of workpiece and its microstructural changes should be taken into consideration. Since material be...

Journal: :physiology and pharmacology 0
rafati rafati tarbiat modares university manijhe mokhtari-dizaji tarbiat modares university hajir saberi tehran medical sciences university hosein chegini

instruction: measurement of brachial artery diameter variation by ultrasound methods has commonly been used to test the endothelial function. it is known that the artery diameter is increased by flow stimulation. therefore in the present study, the effect of external obstruction, as flow stimulation, on the radial strain of the brachial artery was assessed. also the biomechanical behavior of th...

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