Experimental research of bone strength remains costly and limited for ethical technical reasons. Therefore, to predict the mechanical state tissue, as well similar materials, it is desirable use computer technology mathematical modeling. Yet, tissue a bio-mechanical object with hierarchical structure difficult analyze rigidity; therefore, empirical models are often used, disadvantage which thei...

background: this study investigated the applicability of the post-traumatic stress disorder symptom scale (pss) in a group of adolescents who had been directly involved in a disaster in tehran. method: participants were 20 adolescents who had survived a boat sinking in tehran's city park in 2002. the assessment measures used were the post-traumatic stress disorder symptom scale (pss) and clinic...

Background and Objectives: Although mild stress can bring vitality and dynamics into life, excessive stress can result in physical and psychological illnesses. Scientific achievements have failed to take an effective step in controlling stress. One of the most effective factors on stress is religion and religious beliefs. The purpose of the present study was to determine mental health and stres...

Objectives: This present study aims to examine the effectiveness of cognitive-behavioral-based stress management training on anxiety in female MS patients. Methods: This study employed a semi-experimental research method with pre-test post-test, control group and random assignment. The statistical population fully consisted of female MS patients referred to the Iran MS association in 2014, f...

In this paper a composite plate with similar unidirectional fibers is considered. Assuming orthotropic structure, theory of elasticity is used for investigating the stress concentration. Also, complex variable functions are utilized for solving the plane stress problems. Then the effective characteristics of this plate are studied numerically by using ANSYS software. In this research a volume e...

Determination of porosity, permeability, and pore volume compressibility of reservoir rocks and those variations with effective stress changes are of great interest in petroleum engineering. This paper has studied the influence of pore types of carbonate reservoir rocks on pore volume compressibility as well as Klinkenberg permeability and porosity at different stress values. In the current stu...

to understand the effects of salinity stress on four different growth stages of sorghum, a greenhouse experiment with 10 treatments, considering all possible combinations of salinity stress and salt- free periods was carried out. the four growth stages for stress application included: emergence until growing point differentiation, growing point differentiation until half bloom, half bloom until...

stress is one of the effective factors in the development of depressive disorders that performs some parts of its effects by affecting hippocampus. since doxepin has been shown to have neuroprotective effects, in this study, we focused on the effects of doxepin on the expression of involved genes in neuronal survival and plasticity in the rat hippocampus following chronic stress. male wistar ra...

As the most important working area of gear, teeth play the role of transmitting load and power. Tooth line and tooth profile are the two main characteristics of the tooth surface, which affect the shape of the tooth surface, tooth meshing characteristics and contact characteristics. Taking the elliptical cylinder gear pair in the reversing device of a new type of drum pumping unit as the resear...