Lanthanum-Neodymium-Co-Substituted Calcium Fluorobritholites
نویسندگان
چکیده
منابع مشابه
Ionic Conductance Changes in Lobster Axon Membrane When Lanthanum Is Substituted for Calcium
The trivalent rare earth lanthanum was substituted for calcium in the sea water bathing the exterior of an "artificial node" of a lobster axon in a sucrose gap. It caused a progressive rise in threshold, and a decrease in the height of the action potential as well as in its rates of rise and fall. Prolonged application produced an excitation block. Voltage-clamp studies of the ionic currents sh...
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BACKGROUND The aim of this study was to investigate whether nanomolar concentrations of lanthanum could influence the calcium-sensing receptor (CaSR) response. METHODS Embryonic kidney (HEK-293) cells transiently transfected with the human CaSR were used to test the ability of lanthanum to activate the CaSR, either alone or in combination with calcium. CaSR activation was measured by flow cyt...
متن کاملOil transesterification over calcium oxides modified with lanthanum
Investigations were conducted on a series of calcium and lanthanum oxides catalyst for biodiesel production. Mixed oxides catalyst showed a superior transesterification activity over pure calcium or pure lanthanum oxide catalysts. The catalyst activity was correlated with surface basicity and specific surface areas. The effects of water and free fatty acids (FFA) levels in oil feedstock, water ...
متن کاملCa++-Antagonist Lanthanum POSSIBLE ROLE OF CALCIUM IN ATHEROGENESIS
out in this study, although no direct effects of La3+ on tissue metabolism have as yet been reported. This work was presented in part at the 31st Annual Meeting of the Council on Arteriosclerosis of the American Heart Association, Miami Beach, Fla., November 1977. Circulation. 56(Suppl. III): 145. Receivedfor publication 26 March 1979 and in revisedform 6 December 1979. INTRODUCTION As recently...
متن کاملSodium-carbonate co-substituted hydroxyapatite ceramics
Powders of sodium-carbonate co-substituted hydroxyapatite, having sodium content in the range of 0.25–1.5 wt.% with a 0.25 wt.% step, were prepared by a precipitation-solid state reaction route. Compacts of the powders were sintered in a CO2 flow (4 mL/min) at 1100 °C for 2 h. The sintered ceramics contained sodium and carbonate ions in the ranges of 0–1.5 wt.% and 1.3–6 wt.%, respectively, whi...
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ژورنال
عنوان ژورنال: Journal of Materials Science and Chemical Engineering
سال: 2018
ISSN: 2327-6045,2327-6053
DOI: 10.4236/msce.2018.67016