نتایج جستجو برای: refractory

تعداد نتایج: 57765  

In this study, the composition of magnesium aluminate spinle and the converter mud were used as raw materials to in-situ formation of hercynite phase in magnesite-hercynite refractory bricks. The pressed samples were sintered at 1400 and 1500℃ and then, the phase composition of bricks was evaluated after firing at 1400℃. Besides, the effect of nano-magnesia particles addition on the properties ...

Arianpour, F., Banitaba, A., Naghizadeh, R,

In this research project, the properties and characterization of one kinds of Iranian bauxite extracted from Damavand Shahbolaghi mine near Tehran were compared with one type of industrial China's refractory grade bauxite in order to using in refractory industries. At first physical, chemical and thermal properties and phase and micro structural evolutions of as received and sintered samples at...

LEE W.E., ,

Penetration and dissolution mechanisms are reviewed for predominantly single-phase oxide, two phase oxide and oxide-carbon composite refractories by liquid silicate slags. Theoretical models of these processes, as well as static (sessile drop, dipping and crucible) and dynamic (rotating finger and rotary slag) experimental tests, along with their practical limitations are considered. Direct (co...

K Khatami

Refractory celiac disease (RCD) is when malabsorption symptoms and villous atrophy persist despite strict adherence to a gluten free diet (GFD) for more than 12 months and other causes of villous atrophy have been ruled out.  RCD is considered a rare disease and almost exclusively occurs in adults. Persistent diarrhea, abdominal pain, weight loss are the most common symptoms in RCD. Also, anemi...

Introduction: Celiac disease can be associated with other diseases, including neurological disorders. In this study, the relationship between celiac disease and refractory epilepsy was evaluated in patients who were referred to Imam Khomeini Hospital in Urmia. Methods: In this cross-sectional study, patients with refractory epilepsy who were referred to the neurology clinic of Imam Khomeini Ho...

Journal: :journal of modern processes in manufacturing and production 2015
hassan gheisari ebrahim karamian

silica refractory bricks are used especially in the metallurgical industries, due to desirableproperties such as particularly their high melting point and their rigidity and strength at hightemperatures. in this research, different amount of sic were added to silica refractory containingdifferent binders such as borax, boric acid, calcium nitride, sodium tri poly phosphate, sodiumhexametaphosph...

Journal: :iranian journal of neurology 0
ali akbar asadi-pooya associate professor, department of neurology, shiraz university of medical sciences, shiraz, iran and adjunct research assistant professor, department of neurology, thomas jefferson university, philadelphia, usa. seyed mohsen dehghani associate professor of pediatric gastroenterology, gastroenterohepatology research center, shiraz university of medical sciences, shiraz, iran mehrdad emami shiraz university of medical sciences, shiraz, iran

background: the main purpose of the current study was to determine the effect of treating helicobacter pylori (hp) infection on seizure frequency in patients with refractory epilepsy. methods: a small sample of adult patients above 18 years of age with a diagnosis of refractory epilepsy was studied at the outpatient epilepsy clinic at shiraz university of medical sciences, from january 2009 thr...

Journal: :medical journal of islamic republic of iran 0
daryoosh javidi shariati hospital,tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)سازمان های دیگر: shariati hospital niloofar saffarian , pars hospital.no. 221, fatemi st. golha sq.

abstract despite sophisticated conventional medical treatment and the continued development and improvement of coronary revascularization modalities in recent years, a significant number of patients still suffer from refractory angina pectoris and cannot be successfully managed. advances in therapeutic options have led to an increase in the average of life expectancy even in such no-option pati...

Journal: :گوارش 0
shahram agah seyed mohammad sadegh ghafoori abbas eshraghi ali pourmojarab azhar eshraghi

hypereosinophilic syndromes were a group of divergent disorders united by overproduction of eosinophils and the several organ damages ascribed to this persistent eosinophilia. among all the presenting symptoms, gastrointestinal symptoms were the least common. we were reporting a 21 year old man with a 2 year history of refractory ascites, hepatomegaly, portal and hepatic veins thrombosis and cu...

Mehdikhani, , Saeedi Razavi, ,

Oxide materials such as Al2O corundum has a great influence on the mechanical and oxidation properties of refractory or refractory materials. In this paper, the effect of Al2O3 powder density, apparent porosity, linear shrinkage, and oxidation resistance of SiC composite refractory materials is investigated. Meanwhile, the compressive and flexural strengths were investigated before and after he...

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