نتایج جستجو برای: elongation to break eb
تعداد نتایج: 10627733 فیلتر نتایج به سال:
Nowadays solid propellant motors (SRMs) are widely used because of simple structure and reliability. One of the requirements in SRMs is high tensile and bonding strength of liner for integrity of grain structure and neutralizes stresses applying to motor. In this research, effect of curing agent ratio (NCO/OH) in the range of (R=0.9-1.4) on tensile strength of liner and bonding strength of line...
It is well known that minimum received energy per bit Eb N0 ̨̨̨ min in the interference channel is −1.59dB as if there were no interference. Thus, the best way to mitigate interference is to operate the interference channel in the low power regime, that is in the limit of infinite bandwidth. However, when the bandwidth is large, but finite, Eb N0 ̨̨̨ min alone does not characterize performance. Verdu...
this thesis is an evaluation of poetry of sylvia plath (1932- 1963) and forough farrokhzad (1935-1967) using feminist approach and finds the positive concepts of hope, reason and strength through feminine images in their poetry. plath and farrokhzad are from different cultures and different countries but they share the same concepts and themes in their poetry. by applying feminist theory to the...
Background: Recent studies have shown that cytokines have an important role in the pathogenesis of inflammatory diseases and can be used as prognostic markers. Objective: To evaluate the IL-6/IL-10 ratio in patients with Inherited Epidermolysis Bullosa (EB) as a prognostic marker. Methods: Serum levels of IL-6 and IL-10 were measured in 13 patients with recessive dystrophic EB (RDEB) as well as...
Background: Acetaminophen-induced toxicity is a common cause of acute liver failure. This study investigated the hepatoprotective effects of Eryngium bungei Boiss (EB) extract against the hepatotoxicity in rats. Methods: Thirty adult male rats were randomly assigned to five groups, with free access to water and food. They were treated as follows: Group 1 (negative controls): distilled water ...
The propagation of spiral waves in two-dimensional reactive–diffusive media subject to a velocity field with straining is studied numerically. It is shown that, depending on the magnitude of the strain rate, the effects of straining on wave propagation can be classified in three regimes: the no break-up, the transitional and the break-up regimes. In the no break-up regime, the spiral wave prese...
although the epileptogenic properties of estrogens have been widely demonstrated in several models and species, the mechanism(s) by which estrogens can acutely change seizure parameters including after discharge and seizure duration remain remains to be determined. in the present study, we examined the role of nmda (n-methyl-d-aspartate), non-nmda and estrogenic receptors in estradiol benzoate ...
Shogaol and gingerol, compounds in ginger, can act as antiemetic. Ginger extract was formulatedby patch transdermal to increase the effectiveness of therapy minimize side effects. Inthis study, maceration with ethanol 96% used extraction method phytochemical screeningwas carried out identfy exctracted compounds. The formulation transdermalpatch matrix ginger concentrations 0,5 gr (F1), 1 (F2), ...
kefiran is an exopolysaccharide produced by microorganisms present in the kefir grains that has several health promoting properties. in this research, physico-mechanical and thermal characteristics of nanocomposite film composed of kefiran-montmorillonite (mmt; 1, 3 and 5% w/w) were studied. results showed that the thickness and the tensile strength of the films increased by increasing the nano...
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