نتایج جستجو برای: normal stress

تعداد نتایج: 970627  

Journal: :international journal of civil engineering 0
ali pak azadi ave., tehran zahra zahmatkesh azadi ave., tehran

geotextiles are one of the most widely used synthetic materials in filtration and drainage applications. since in real applications, geotextiles are subjected to various hydraulic gradients and confining stresses, hydraulic behavior of geotextiles under different circumstances is of great practical importance. in this study filtration and drainage properties of several nonwoven needle-punched g...

S. Ahmadi

In the present work, failure of a snow slab is analyzed by accounting Normal mode criteria. The analysis has been extended to include residual stress into the model (in addition to body forces). Intensity of crack energy release rate, and displacement components have been derived and their values have been estimated. The obtained results have been compared with the existing snow slab failure mo...

Journal: :journal of applied and computational mechanics 0
yuwaraj m. ghugal head of department of applied mechanics, govt. college of engineeringkarad, shivaji university, maharashtra-415124, india param d. gajbhiye m-tech student

a 5th order shear deformation theory considering transverse shear deformation effect as well as transverse normal strain deformation effect is presented for static flexure   analysis of simply supported isotropic plate. the assumed displacement field accounts for non-linear variation of in-plane displacements as well as transverse displacement through the plate thickness. the condition of zero ...

Journal: :Journal of Rheology 2019

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
ahmad najafi dept. of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. narges panahandeh dept. of operative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. abdolmajid bahreinian siamak sabour seyyed bahaodin mahmoodi

objectives: this study sought to assess the level of stress in general dentists in the 2nd district of tehran city in 2014 to find out the stressors and suggest strategies to overcome them. methods: this descriptive, analytical, cross-sectional study was conducted on 130 general dentists from the 2nd district of tehran city selected via weighted randomization. level of stress was assessed using...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1381

deposite the different criticisms on contrastive analysis it has been proved that the results of it(when processed)can be usuful in a tefl environment,specially at the level of phonology.this study is an attempt to compare and contrast the sound systems of kurdish and english for pedagogical aims. the consonants,vowels,stress and intonation of the twolanguages are described by the same model-ta...

صدیق, سامان, صمدزاده, علیرضا, ضابط, محمد, قادری, محمد قادر,

The purpose of present study was identifying superior cotton varieties (Gossypiumhirsutum L.) under drought stress and normal conditions using GGEBiplot and GTBiplot. The experiment was conducted in a randomized complete block design with three replications and 14 treatments under normal and stress conditions in the research station of Birjand University in 2013-2014. Cotton genotypes were: Arm...

Journal: :علوم گیاهان زراعی ایران 0
محمد مدرسی استادیار دانشکده کشاورزی دانشگاه خلیج فارس ساسان راستگو استادیار دانشکه کشاورزی دانشگاه خلیج فارس

climate changes due to global warming is affecting world agriculture adversely. heat stress due to global warming has turned to one of the most important factors reducing quantity and quality of plants production such as tomato. despite of wide cultivation of tomato and high temperature effects on its production, unfortunately; research in this area is scarce. this study was conducted to invest...

Journal: :international clinical neurosciences journal 0
seifollah gholampour deptartment of bimedical engineering, north tehran branch, islamic azad university, tehran, iran nikoo soleimani m.sc. student of biomechanical engineering, department of biomedical engineering, north tehran branch, islamic azad university, tehran, iran. ali reza zalii shohada tajrish neurosurgical center of excellence, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran. fateme zare karizi m.sc. student of biomechanical engineering, department of biomedical engineering, north tehran branch, islamic azad university, tehran, iran. afsoun seddighi shohada tajrish neurosurgical center of excellence, functional neurosurgery research center, shohada tajrish hospital, shahid beheshti university of medical sciences, tehran, iran

background: cervical spine sustains most of thevertebral column injuries, among other injuries, the disc degeneration and damage that lead to replacement of the damaged disc with cage or artificial disc. methods: the c4 to c6 vertebrae of a normal subject and a person with interbody fusion cage were 3d modelled and then analyzed using finite element method. the results of maximum stress and str...

Journal: :تولید گیاهان زراعی 0

in order to determine the best index for evaluating maize genotypes, 15 maize inbred lines were evaluated in two planting dates, 6 july to coincide heat stress with pollination time and 27 july as normal planting to avoid high temperature during pollination and grain filling period, using a randomized complete block design with three replications, in shushtar city, in 2007. result showed that i...

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