نتایج جستجو برای: improving fatigue properties and surface activation before coating the wire
تعداد نتایج: 21348396 فیلتر نتایج به سال:
the construct of self-efficacy has received increasing attention in research over the past two decades. many studies have been carried out 1.3 significance of the study this study has pedagogical implications since improving students’ self- efficacy and autonomy is important for promoting actual performance on classroom academic tasks. in academic settings, it has been shown that self-effi...
background : cancer is a disease which is identified by abnormal deformation of the cells. one of the common side effects of the cancer is fatigue that affects on patients’ life quality and leads to disability. exercise has an important role in improving these patients’ life quality and can be used as a complementary treatment during and after the cancer treatment. unfortunately, despite good e...
abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...
the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...
In this research work, the influence of higher surface hardness on the fretting fatigue life of hard anodized aerospace AL7075-T6 alloy was investigated. An optimization of the parameters of hard anodized Al7075-T6 alloy to obtain higher surface hardness was presented. Confirmation test was carried out to show the improvement after using the best parameter combination attained from the optimiza...
Conventional thermal spraying processes are almost exclusively carried out in an air atmosphere, resulting the oxidation of particle surfaces and interfaces within coating between substrate coating. Furthermore, initial process surface activation conventionally takes place preventing oxide-free interfacial transition. Consequently, application materials with high oxygen affinity represents a ma...
The fatigue behavior of Gray Cast Iron is affected to its microstructure, strength, ductility, residual stress and surface roughness etc.... In general, fatigue life increase as the magnitude of surface roughness decrease or the surface hardness increases by surface treatment. As the consequence of conducted high temperature oxidation in subsurface layer of cast iron pores have been creating, c...
objective: because of the host immunological system response against the minor blood groups of donor, transfusion in some cases, especially for patients require repeated transfusions (such as people with thalassemia), can be considered as a significant problem. a proposed way is coating the surface antigens on red blood cells (rbcs) by covalent binding of methoxy polyethylene glycol (mpeg). th...
surface roughness of engineering parts is very significant property that effectively influences on the wear and fatigue strength. there are many methods for improving surface quality of engineering parts such as grinding, lapping and honing. one of the methods for improving surface quality is roller burnishing. roller burnishing improves surface quality of engineering parts by means of cold wor...
A cold sprayed Al coating on S355 structural steel was processed using a laser remelting (LR). The surface and cross-section morphologies, chemical compositions, and phases of as-obtained Al coating before and after LR were analyzed using a scanning electronic microscope (SEM), energy dispersive spectrometer (EDS), and X-ray diffractometer (XRD), respectively, and their hardness was measured us...
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