نتایج جستجو برای: HX-752
تعداد نتایج: 2801 فیلتر نتایج به سال:
عامل‌های پیوندی یکی از مهمترین افزودنی‌های مورد نیاز در تولید پیشرانه‌های جامد مرکب می‌باشد. این ترکیب ها باعث افزایش چسبندگی میان رزین پلیمری و اکسید‌کننده و بهبود ویژگی های مکانیکی- فیزیکی و افزایش در بارگذاری جامد (فیلرپذیری) پیشرانه‌ها می‌شوند. در این مطالعه، نخست حد واسط 2-متیل آزیریدین از ترکیب 1-آمینو 2-پروپانول با ارایه روشی نوین و با...
Despite the unique properties of epoxy resins, their use is limited in many cases due to their low impact resistance. One of the methods to overcome this limitation is to use compounds for increase Toughness such as carboxyl-terminated butadiene acrylonitrile (CTBN) (94% Wt) in the epoxy matrix. In this study, investigated the curing reaction of CTBN with 1,2,7,8 diepoxyoctane (DEO)(5% Wt) in t...
One of the most important required additives in production of composite solid propellants are bonding agents. These compounds are used in order to increase the adhesion between the polymer resin and the oxidizer and also to enhance the physical and mechanical properties and to improve the solids loading of propellants. In some cases, the bonding agents also play a role as a curing agent by cros...
Introduction: Hypoxia is a common leading cause of detrimental effect on structure and function of tissue during increase in the production of reactive oxygen species that are generated during the re-oxygenation phase of intermittent continuous hypobaric hypoxia and contribute to physiological responses. This study was carried out to evaluate the effects of flaxseed (Fx) in reducing the inciden...
In this paper, we define a new algebraic structure of an induced fuzzy k-ideal of a HX ring and some related properties are investigated. The purpose of this study is to implement the fuzzy set theory and ring theory in fuzzy HX k-ideals of a HX ring. We also establish the relation between fuzzy HX ideals and fuzzy HX k-ideals of a HX ring . Characterizations of level subsets of a fuzzy HX k-id...
In this paper, the notion of the normal level sub HX group is introduced. We discuss the properties of normal level sub HX groups of a bipolar fuzzy normal HX subgroup of a HX group under homomorphism and anti-homomorphism. AMS Subject Classification (2000): 20N25, 03E72, 03F055, 06F35, 03G25. Keywordsfuzzy set, bipolar fuzzy set, bipolar fuzzy HX subgroup, bipolar fuzzy normal HX subgroup, lev...
The troglomorphic phenotype shared by diverse cave-dwelling animals is regarded as a classical example of convergent evolution. One unresolved question is whether the characteristic eye loss in diverse cave species is based on interference with the same genetic program. Phreatichthys andruzzii, a Somalian cavefish, has evolved under constant conditions in complete darkness and shows severe trog...
The expression of cell-surface haemopexin (Hx) receptors on human cytotrophoblasts was assessed by using four different Hx species purified from plasma: human Hx isolated by wheatgerm-affinity chromatography, human Hx isolated by haem-agarose-affinity chromatography and rabbit and rat Hx, also isolated by haem-agarose-affinity chromatography. About 3500-7000 high-affinity (Kd 0.34-0.85 nM) rece...
In this paper, we define the concept of a bipolar fuzzy cosets of a bipolar fuzzy HX subgroup, bipolar anti fuzzy HX subgroup, bipolar fuzzy middle coset of a bipolar fuzzy HX subgroup and bipolar anti fuzzy HX subgroup, conjugate bipolar fuzzy HX subgroup, conjugate bipolar anti fuzzy HX subgroup and discussed some of its properties with the examples. Further we define the level subsets and lo...
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