نتایج جستجو برای: shock reaction
تعداد نتایج: 512497 فیلتر نتایج به سال:
We analyze a nonlinear shock-capturing scheme for H1-conforming, piecewise-affine finite element approximations of linear elliptic problems. The meshes are assumed to satisfy two standard conditions: a local quasiuniformity property and the Xu–Zikatanov condition ensuring that the stiffness matrix associated with the Poisson equation is an M -matrix. A discrete maximum principle is rigorously e...
A discontinuous Galerkin algorithm for the simulation of realistic detonation and supersonic combustion systems is developed. This algorithm enables to consider complex and temperature/mixture-dependent thermodynamic transport properties, detailed and stiff reaction chemistry, and the robust shock-capturing. In order to evaluate all relevant algorithmic aspects, the DG-method is applied to a se...
We report the appearance of a Mycoplasma haemocanis infection in laboratory dogs, which has been reported previously, yet, never before in Europe. Outbreak of the disease was triggered by a splenectomy intended to prepare the dogs for a hemorrhagic shock study. The clinical course of the dogs was dramatic including anorexia and hemolytic anemia. Treatment included allogeneic transfusion, predni...
BACKGROUND Gonad differentiation is one of the most important developmental events in vertebrates. Some heat shock proteins are associated with gonad development. Heat shock protein 70 (Hsp70) in the teleost fish and its roles in sex differentiation are poorly understood. METHODS AND FINDINGS We have identified a testis-enriched heat shock protein Hspa8b2 in the swamp eel using Western blot a...
Both amphetamines and cocaine promote perivascular and interstitial fibrosis and myocyte hypertrophy, but acute myocardial infarction is much more common in cocaine abusers than in amphetamine-class fatalities. As a hypothesis was speculated that amphetamine-induced hyperthermia may promote the expression of heat shock proteins, which may in turn increase myocardial resistance to infarction. We...
چکیده : * در یک واکنش تک ظرفی و با استفاده از واکنش آلدهید های آروماتیک و 3- متیل 1- فنیل پیرازولین-5- ان با نسبت مولی 1:1، ساختارهای هتروسیکل پیرازول سنتز شد. از مزایای آن، انجام واکنش در دمای اتاق، عدم نیاز به کاتالیزور، بازده بالای واکنش، استفاده از آب بعنوان حلال سبز و بی خطر به جای حلال های آلی وسمی می باشد . * توانستیم با استفاده از ملدرام اسید ومشتقات 2- هیدروکسی بنزآلدهید، ترکی...
Since FOX-7 (1, 1-diamino-2, 2-dinitroethylene) is a relatively new energetic material, little is known about its physical and chemical properties. Therefore, first-principles quantum chemical calculations are used to predict the energies of atoms of FOX-7. Under gentle heating (thermolysis) is likely to cause hydrogen transfer between molecules, producing highly reactive chemical species. Conv...
Background & Objective: Post traumatic stress disorder (PTSD) is an anxiety reaction, which occurs as a result of encountering a seriously traumatic event during one’s lifetime. The aim of this study was to evaluate the effect of saffron aqueous extract and crocin on spatial memory and learning with the Barnes maze in a PTSD model on male Wistar rats (Weighting 200–250 gr). Materials & Method...
In 1924, Drinker and Bronfenbrenner (1) measured the pressure in the pulmonary artery of the rabbit, the cat, the dog and the monkey during and for a brief period after the intravenous injection of small doses of sheep serum. The animals in question had received antecedent doses of this protein. I t was found that in rabbits, anaphylactic shock is characterized by a notable degree of pulmonary ...
The dynamics of detonation transmission from a straight channel into curved chamber was investigated numerically and experimentally as function initial pressure (10 kPa ? p0 26 kPa) in an argon diluted stoichiometric H2–O2 mixture. Numerical simulations considered the two-dimensional reactive Euler equations with detailed chemistry; hi-speed schlieren OH* chemiluminescense were used for flow vi...
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