نتایج جستجو برای: strength parameters
تعداد نتایج: 767374 فیلتر نتایج به سال:
Background: anterior cruciate ligament injury (ACL) has destructive effects on the postural stability and muscle strength of the knee and cause to impair the neuromuscular control. Patients with ACL injury divided to Coper and Noncoper groups. The purpose of this study has been to compare the muscle strength and postural stability of the two groups of the patients with the ACL- injury: Coper an...
background: this study investigated the effects of lignosus rhinocerotis (lrs) supplementation and resistance training (rt) on isokinetic muscular strength and power, anaerobic and aerobic fitness, and immune parameters in young males. methods: participants were randomly assigned to four groups: control (c), lrs, rt, and combined rt-lrs (rt-lrs). participants in the lrs and rt-lrs groups consum...
Background: Asthma is a major health condition in Iran. This randomized clinical trial was aimed for the comparison of the effects of two exercise protocols (aerobic and aerobic-strength) on the pulmonary indices and quality of life of asthmatic patients. Methods: The study was conducted in pulmonary ward of Dr Shariati Hospital in Tehran, and Research Center of Exercise Medicine of Tehran in ...
Background and aim: Having high correlation with the explosive power of the lower body, the muscular strength of the athletes and production of high power levels in the shortest time (power) and high level of agility, is essential to achieve optimal performance in Parkour. It seems that using polymetric trainings can make it possible to achieve the highest performance. Therefore, the aim of the...
in this paper, after collecting the rock samples from eight mines and one high way slope, the tests for determination of dry density, uniaxial compressive strength, tensile strength (brazilian test), elastic modulus, schmidt hammer rebound number have been done on samples. in addition, in order to calculating the mean size of rock grains, quartz content, hardness and abrasivity, a thin sections...
Mechanical properties of the alloys are a strong function of the average silicon particles size and the secondary dendrite arm spacing (SDAS). Modified Hall-Petch equation expresses the effects of these two microstructural parameters on the yield strength and ultimate tensile strength of the Al-Si based alloys. These microstructural parameters depen on parameters such as chemical composition, c...
In this research, tensile strength of ultrasonic welded parts made of thermoset polymer-reinforced glass fiber with surface preparation has been investiagted. In order to elevate the adhesion of two surfaces laser grooving method has been applied. Two type of thermoplastic materials including Plymethyl methacrylate (PMMA) and polypropylene (PP) have been used as interlayers. Influences of main ...
This paper deals with modeling and optimization of the roll-bonding process of Ti/Cu/Ti composite for determination of the best roll-bonding parameters leading to the maximum Ti/Cu bond strength by combination of neural network and genetic algorithm. An artificial neural network (ANN) program has been proposed to determine the effect of practical parameters, i.e., rolling temperature, reduction...
Compressive strength and concrete slump are the most important required parameters for design, depending on many factors such as concrete mix design, concrete material, experimental cases, tester skills, experimental errors etc. Since many of these factors are unknown, and no specific and relatively accurate formulation can be found for strength and slump, therefore, the concrete properties ca...
In recent years, great attention has been paid to the development of high manganese austenitic TWIP steels exhibiting high tensile strength and exceptional total elongation. Due to low stacking fault energy (SFE), cross slip becomes more difficult in these steels and mechanical twinning is then the favored deformation mode besides dislocation gliding. Chemical composition along with processing ...
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