نتایج جستجو برای: shear stress level

تعداد نتایج: 1527206  

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...

2014
Xiaoying Zhu Roland Bouffanais Dick K. P. Yue

FIG. S1. Influence of shear stress on cell directionality. (a) The polar histogram demonstrates distribution of angles of net migration vectors for a population of 100 cells; in the absence of any shearotactic signal (σ = 0 Pa) random cellular migration is observed. (b) Shear stress level of σ = 0.05 Pa with a population of 126 cells. Even at such exceptionally low shear stress level, we observ...

Journal: :journal of agricultural science and technology 2012
f. shahbazi m. nazari galedar

the research was conducted in order to determine the bending stress, young’s modulus, shearing stress, and shearing energy of safflower stalk as a function of moisture content and stalk region. the bending forces were measured at different moisture contents and the bending stress and the young’s modulus were calculated from these data. for measuring the shear forces, the stalk specimens were se...

2014
Cheng Ge Jiantao Song Liang Chen Lin Wang Yifei Chen Xinxin Liu Yu Zhang Lining Zhang Mei Zhang

OBJECTIVES We recently found low level of tumor suppressor programmed cell death 4 (PDCD4) associated with reduced atherosclerotic plaque area (unpublished). We investigated whether atheroprotective unidirectional pulsatile shear stress affects the expression of PDCD4 in endothelial cells. METHODS AND RESULTS En face co-immunostaining of the mouse aortic arch revealed a low level of PDCD4 in ...

2000
Shigeo Akimoto Masako Mitsumata Toshiyuki Sasaguri Yoji Yoshida

Alterations in the functions of vascular endothelial cells (ECs) induced by fluid shear stress may play a pivotal role in both the development and prevention of vascular diseases. We found that DNA synthesis of bovine aortic and human umbilical vein ECs, determined by [H]thymidine incorporation, was inhibited by steady laminar shear stress (5 and 30 dyne/cm). This growth inhibition due to shear...

Journal: :Circulation research 2000
S Akimoto M Mitsumata T Sasaguri Y Yoshida

Alterations in the functions of vascular endothelial cells (ECs) induced by fluid shear stress may play a pivotal role in both the development and prevention of vascular diseases. We found that DNA synthesis of bovine aortic and human umbilical vein ECs, determined by [(3)H]thymidine incorporation, was inhibited by steady laminar shear stress (5 and 30 dyne/cm(2)). This growth inhibition due to...

2000
Shigeo Akimoto Masako Mitsumata Toshiyuki Sasaguri Yoji Yoshida

Alterations in the functions of vascular endothelial cells (ECs) induced by fluid shear stress may play a pivotal role in both the development and prevention of vascular diseases. We found that DNA synthesis of bovine aortic and human umbilical vein ECs, determined by [H]thymidine incorporation, was inhibited by steady laminar shear stress (5 and 30 dyne/cm). This growth inhibition due to shear...

Journal: :international journal of civil engineering 0
a.a. heshmati assistant professor, school of civil engineering, iran university of science and technology a.r. tabibnejad ph.d. student, school of civil engineering, iran university of science and technology h. salehzadeh assistant professor, school of civil engineering, iran university of science and technology s. hashemi tabatabaei assistant professor, department of geotechnical engineering, road, housing & urban development research center

to investigate the saturation induced collapse deformation behavior of rockfill material, a set of large-scale triaxial tests were conducted in saturated and dry-saturated conditions. specimens were tested under various confining pressures. for dry-saturated tests, specimens were sheared in various stress levels. results of all dry saturated tests indicate a sudden reduction in the specimen vol...

Journal: :international journal of civil engineering 0
m. karimpour fard university of guilan, rasht, iran postal code: 1841 tel/fax: +98 131 3232806 n. shariatmadari iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9 m. keramati iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9 h. jafari kalarijani iran university of science and technology narmak, teharn, iran postal code: 16846_13114 tel: +98 21 77451500-9

due to the existence of fibrous materials such as plastic fragments, the strength anisotropy of municipal solid waste (msw) materials is the main source of differences between their mechanical response in direct shear and triaxial apparatus. as an extension of earlier research on the mechanical behavior of msw using a large traixail apparatus, results presented in shariatmadari et al. [1] and k...

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