نتایج جستجو برای: c refractory

تعداد نتایج: 1108447  

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2021

The refractory solid electrolyte, sodium beta alumina, is cold sintered at 375 °C which over 1000 lower than conventional sintering. A relative density above 90% and an ionic conductivity of 10 ?3 S cm ?1 (300 °C) obtained.

Abstract: Thermodynamic computational packages MTDATA and FactSage have been used to carry out calculations on the variation with temperature of the phases precipitated on cooling in both oxidising and reducing conditions of a typical ladle slag composition, in the temperature range 1700 - 900°C. The current coverage of the databases associated with the computational packages is discussed i...

Journal: :Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2013
Emily R Levy James M McCarty Andi L Shane Peggy S Weintrub

BACKGROUND Coccidioidomycosis is a spectrum of diseases caused by the dimorphic fungi Coccidioides. Current regimens for severe or disseminated disease include fluconazole, itraconazole, or amphotericin; newer triazoles (ie, voriconazole, posaconazole) have been demonstrated to be useful in refractory disease. Previous reported experience with combination triazole and caspofungin therapy has be...

Progressive conversion/shrinking core (PC-SC) models of constant-size cylinders were exploited to interpret the decarburization reactions of MgO-C-Si bricks heated up under blown air. Chemical adsorption/solid (or pore) diffusion mechanisms governed the reaction rate. With 5% silicon, chemical adsorption vanished at 1000 and 1100°C. The oxidation rate lowered then with temperature. This was due...

Journal: :Journal of the American College of Cardiology 2017

Journal: :The Biochemical journal 1990
P A van der Merwe R P Millar J S Davidson

Using permeabilized gonadotropes, we examined whether Ca2(+)-stimulated luteinizing-hormone (LH) exocytosis is mediated by the Ca2(+)-activated phospholipid-dependent protein kinase (protein kinase C). In the presence of high [Ca2+]free (pCa 5), alpha-toxin-permeabilized sheep gonadotropes secrete a burst of LH and then become refractory to maintained high [Ca2+]free. The protein kinase C activ...

Journal: :The Journal of experimental biology 1967
A Talo K Y Lagerspetz

The effect of temperature on the refractory period in nerve fibres is of the same magnitude as its effect on the duration of the action potential (Tasaki, 1949) or as the effect of temperature on the duration of the falling phase of the spike (Adrian, 1921). Temperature coefficients (Q10) as high as 4 have been calculated for the refractory period in single fibres of the frog by Schoepfle & Erl...

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