نتایج جستجو برای: dynamic and static efficiency
تعداد نتایج: 16940789 فیلتر نتایج به سال:
rapid urban growth is resulting into increase in travel demand and private vehicle ownership in urban areas. in the present scenario the existing infrastructure has failed to match the demand that leads to traffic congestion, vehicular pollution and accidents. with traffic congestion augmentation on the road, delay of commuters has increased and reliability of road network has decreased. four s...
In the current study, the effects of Casimir force and squeeze film damping on pull-in instability and dynamic behavior of electrostatically actuated nano and micro electromechanical systems are investigated separately. Linear elastic membrane theory is used to model the static and dynamic behavior of the system for strip, annular and disk geometries. Squeeze film damping is modeled using nonli...
Objective: With regard to the effects of postural fatigue on the amount of participation in sport activities and as this may result in impaired motor functioning, the aim of this study was to investigate the effect of fatigue on static and dynamic balance in karate kata and kumite elite men. Methods: The statistical population consist of all karate kata and kumite National Karate team members ...
Abstract In this paper, the effect of strain rate sensitivity of materials in the case of a fully clamped circular plate has been discussed introducing a new criterion called "dynamic to static collapse pressure ratio". In order to do so, a simple mass and wire model is assumed. Then, using Cowper-Symonds constitutive relation and Perrone-Bhadra Simplifications, the mean strain rate of su...
In this paper, static and dynamic behavior of a varactor of a micro-phase shifter under DC, step DC and AC voltages and effects of the residual stress on the phase diagram have been studied. By presenting a mathematical modeling, Galerkin-based step by step linearization method (SSLM) and Galerkin-based reduced order model have been used to solve the governing static and dynamic equations, resp...
Objectives: Joint supporters can caused increasing proprioceptive information. Such proprioceptive information is needed for balance. The purpose of this study was to determine the effect of soft knee support on static and dynamic balance tests in male elderly (65 years and older). Methods & Materials: Via a randomized clinical trial study design, 22 elderly were selected and divided into tw...
Introduction: Balance in the elderly is one of the important issues, and imbalance can create irreparable problems for the elderly. The aim of this study was to investigate the effect of Frenkel balance exercise and aerobic exercise (walking) on improving the balance of elderly patients in Kerman province in 2016-2017. Methods: We used a randomized block design, with 4 participants in each ...
conclusions it seems that plantar changes have insignificant effect on static and dynamic indices evaluated by the biodex balance system. objectives the current study aimed to evaluate the relation between these structural characteristics and balance indices. patients and methods the study population was 100 male and female students from semnan university of medical sciences, semnan, iran. to e...
The objective of the present study was to examine the effect of endurance exercises on static and dynamic endurance of back extensor muscles in two genders. This study with quasi-experimental repeated measure design was conducted on 20 men and 20 women as non convenience sampling. Dynamic and static back extensor tests were used for endurance measurement and following exercises, repeated measu...
As part of the development of equipment and innovative technology for the process flow-sheet, a study on the selection of good resin for uranium uptake is ongoing. Both static and dynamic column equilibrium testing upon synthetic and Gattar pregnant leach solutions (PLS) were carried out to estimate the change of total capacity and breakthrough capacity of the commercial macroporous anion excha...
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