نتایج جستجو برای: point stress
تعداد نتایج: 948986 فیلتر نتایج به سال:
in order to evaluate the effect of water stress on fruit quality and quantity of some iranian melons, the experiment was set out in a split plot design with three replicates in research filed of university of zanjan in 2014. treatments consisted arrangement of three irrigation levels (starting irrigation at 100, 66 and 33 etc) and 11 genotypes of iranian melons (ʼkhatouniʻ, ʼkaliʻ, ʼorshangʻ, ʼ...
Understanding the physics of earthquake slip helps to improve seismic hazard predictions. The occurrence of quenched frictional melts along exhumed fault zones (pseudotachylytes) provides unequivocal evidence of ancient seismic slip along these faults [Sibson, 1975]. In order to better understand the evolution of friction (the ratio of shear stress over normal stress) during meltgenerating slip...
Introduction: Nurses as the main members of treatment-and-care team play an important role in improvement and promotion of health in society. Job stress is a recognized and integral part of modern nursing which has destructive effects on both nurses and patients. Materials and Methods: The present descriptive and analytical study aims to determine the level of nurses;apos job stress in Tehran i...
Background and aimsThe Medical Errors and the potential unsafe actions are always regarded as a serious trouble by the managers and health care providers. Using the employees' attitude data as a measurement criterion in the evaluation of the hospitals performance in the field of the “Safety” can improve the safety level among the personnel and patients . Survey of employees' attitude about sa...
conclusions in cabg with cardiopulmonary bypass, using plasma cortisol level as a measure, isoflurane-sufentanil significantly reduces the stress response to the surgery, when compared to propofol-sufentanil. results compared to the baseline (t0), at the end of cardiopulmonary bypass (t1), both groups demonstrated a decrease in plasma cortisol levels with no statistical significant difference (...
objective: in this paper, finite element model of the l4 vertebra subjected to combination of compression and flexion loading in isotropic and anisotropic cases is investigated. methods: in both cases, the vertebra is considered homogeneous. also, the body of vertebra is divided to cancellous and cortical sections in anisotropic model, but the process is assumed isotropic such as isotropic mode...
For crushable calcareous sand, the stress-dilatancy curve has a significant turning hook around peak stress ratio, contains main features of loading process, including phase transformation point and ratio point. However, more than half this hook, i.e., line after point, is usually ignored by known models. It difficult to directly establish model with such characteristics, since demonstrates tha...
abstract background: stress, anxiety, and postpartum depression are the most common problems among women in their childbearing age. research has shown that aromatherapy administered during labor reduces anxiety in mothers. with regard to the specific biological conditions in postpartum period and the subsequent drop in hormone levels, this study investigated the effect of lavender on prevention...
Stress-induced mutagenesis is a collection of mechanisms observed in bacterial, yeast, and human cells in which adverse conditions provoke mutagenesis, often under the control of stress responses. Control of mutagenesis by stress responses may accelerate evolution specifically when cells are maladapted to their environments, i.e., are stressed. It is therefore important to understand how stress...
Introduction: As a motivating factor, self- efficacy increases academic performance and decreases stress. Therefore, determining factors influencing self- efficacy could be significantly useful in improving students’ academic achievement and consequently development of educational system. The aim of this study is to investigate factors affecting academic self efficacy and its association with a...
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