نتایج جستجو برای: point stress

تعداد نتایج: 948986  

2015
Nicolas Baeyens Stefania Nicoli Brian G Coon Tyler D Ross Koen Van den Dries Jinah Han Holly M Lauridsen Cecile O Mejean Anne Eichmann Jean-Leon Thomas Jay D Humphrey Martin A Schwartz

Vascular remodeling under conditions of growth or exercise, or during recovery from arterial restriction or blockage is essential for health, but mechanisms are poorly understood. It has been proposed that endothelial cells have a preferred level of fluid shear stress, or 'set point', that determines remodeling. We show that human umbilical vein endothelial cells respond optimally within a rang...

Background and Objective: Depression, anxiety and stress prevalence is one the most important problems among dental students. Due to psychiatric side effects among students, this study was conducted to determine the rate of depression, anxiety and stress in dental students of Zanjan University of Medical Science in academic year of 2015-2016. Material and Methods: This study with designing of ...

Journal: :The Journal of urology 1999
T H Hsu R R Rackley R A Appell

PURPOSE A new clinical test for intrinsic urethral sphincter dysfunction is proposed and compared to abdominal leak point pressure determination by video urodynamics. MATERIALS AND METHODS Patients were prospectively included in the study if they had stress urinary incontinence symptoms and were to undergo video urodynamic testing. Patients with urinary tract infection, cystocele, rectocele a...

Journal: :Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology 2006
D Treaster W S Marras D Burr J E Sheedy D Hart

The mechanism of musculoskeletal pain underlying low level static exertions, such as those experienced during computer work, is poorly understood. It was hypothesized that static postural and visual stress experienced during computer work might contribute to trigger point development in the trapezius muscles, resulting in myofascial pain. A study was conducted to observe the development of myof...

Journal: :بوم شناسی کشاورزی 0
هادی پیرسته انوشه یحیی امام فاطمه جمالی رامین

today, environment protection and safe crop production are very important. the management of soil elements by bio-fertilizers is considered as important point for sustainable agriculture. mode of action of fertilizers is very different in drought stress conditions. to evaluate biological fertilizers (agrohumic, nitroxin, superabsorbent and vermicompost) and compare them with current chemical fe...

Journal: :journal of rehabilitation in civil engineering 2016
amir kavussi morteza jalili qazizadeh abolfazl hassani

this research was conducted in order to evaluate fatigue behavior of asphalt mixes containing electric arc furnace (eaf) steel slag. after initial evaluation of the properties of eaf steel slag using x-ray diffraction (xrd) and scanning electric microscope (sem), six sets of laboratory mixtures were prepared. each set were treated replacing various portions of limestone aggregates of the mix wi...

2014
Arash Yavari Alain Goriely

We discuss the relevance of non-metricity in a metric-affine manifold (a manifold equipped with a connection and a metric) and the nonlinear mechanics of distributed point defects. We describe a geometric framework in which one can calculate analytically the residual stress field of nonlinear elastic solids with distributed point defects. In particular, we use Cartan’s machinery of moving frame...

1998
Michael R. Hill Tina L. Panontin

Residual stress present in coupons used for fracture testing will influence the experimental determination of fracture toughness. Triaxial residual stress (e.g., due to welding) can alter both the driving force for fracture and the crack-tip constraint at a specified load, so that the apparent toughness of a coupon depends on the residual stress present. In this paper, we employ a micromechanic...

Journal: :به زراعی کشاورزی 0
کامران امیری نسب کارشناس ارشد، گروه علوم باغبانی، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران هدایت زکی زاده استادیار، گروه علوم باغبانی، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران محمود قاسم نژاد دانشیار، گروه علوم باغبانی، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران محمد حسن بیگلویی استادیار، گروه مهندسی آب، دانشکدة علوم کشاورزی، دانشگاه گیلان، رشت، ایران

drought preconditioning (dp) is a method of irrigation with low frequency and longer duration, to extend the root system and suppress drought damage in plants. in the present study, the effect of dp for 30 days on increasing tolerance to drought stress in two turfgrass species, creeping bentgrass (agrostis stolonifera cv.palustris) and tall fescue (festuca arundinacea cv. greystone) was investi...

Journal: :چغندرقند 0
عبدالمجید خورشید عضو هیئت علمی موسسه تحقیقات چغندرقند محمود مصباح هیئت علمی مؤسسه تحقیقات چغندرقند ذبیح اله رنجی هیئت علمی مؤسسه تحقیقات چغندرقند سعید واحدی کارشناس موسسه تحقیقات چغندرقند منصور مصباح هیئت علمی مؤسسه تحقیقات چغندرقند

phenotypic coefficient correlation is a relation criteria for traits. this coefficient can be used to differentiate insignificant traits of  varieties in selection programs. this survey was carried out with 10 breeding populations and susceptible controls in normal and stress conditions. the drought field was irrigated when plants reached wilting point. traits such as leaf length and width, pet...

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