to explain the strategic plan to achieve a new islamic civilization in its various fields and dimensions, a general and scientific structure must be exploited which in accordance with facts of existence from the universe and of human being. this research believes that this general structure along with its entire steps, resources and the foundations of every single one of those steps has been di...

background and aims. the aim of this study was to compare flexural strength of specimens processed by conventional and injection-molding techniques. materials and methods. conventional pressure-packed pmma was used for conventional pressure-packed and injection-molded pmma was used for injection-molding techniques. after processing, 15 specimens were stored in distilled water at room temperatur...

The aim of this work is to synthesize and investigate the performance of yttria-doped zirconia solgel coatings in the chemical corrosion prevention of zircaloy-4 (zirconium alloy) in a 1 N H2SO4 environment. The influence of four different molar ratios of water to alkoxide, namely 1, 4, 12, and 20, on the coating quality and its corrosion prevention performance was investigated. Differential th...

multiple sclerosis is an autoimmune disease of the central nervous system which is accompanied by demyelinating the neurons. the imbalance between the t cell effectors and t cell regulators is thought to have a role in the pathogenesis of the disease. melatonin is a hormone that is secreted by pineal gland which has an important role in circadian rhythm and immune-modulatory effects. melatonin ...

an experiment was conducted to evaluate the effects of some technological processes on the residual levels of imidacloprid in strawberry fruits and products. according to their half-life (t1/2) values, strawberry fruits can be safely harvested for human consumption 7.4 days after spraying. the removal ratio of imidacloprid residue in strawberries was in the range of 9.9–30.55% by washing with t...

in the present study, photocatalytic removal of p-nitrophenol has been carried out in the presence of zno by using a batch reactor with a uv-c lamp (15 w). the effects of applied zno concentration and uv light intensity have been studied. the increase of initial pollutant concentration decreases the removal rate, and the results indicate that the apparent reaction rate constant in the uv/zno pr...

in this research a number of important and active phonological processes in standard german, spoken in berlin, have been studied. in this regard, four dictionaries: duden universal w?rterbuch (1998), langenscheidt (2002), brock haus (1996), and panbeh-chi (1379) have been used for gathering the data. furthermore, two german informants had a four-hour interview to complete the data. in addition,...