منابع مشابه
An Overview of Calcium, Mechanisms and Necessities
Today, promoting quality of life and paying more attention to nutrition and health are among the major issues of international debate and governments' strategies to improve people's quality of life in different societies. There have also been extensive studies to improve nutrition and its relationship with health. The pattern of food consumption is different in most countries, different social ...
متن کاملAn experimental investigation on drying kinetics of calcium carbonate
Calcium carbonate is a versatile mineral with diverse industrial applications. Drying is a necessary processing step in preparation of calcium carbonate product. Deep knowledge of drying kinetics is required in order to design an appropriate dryer. The main aim of the present study was to investigate the drying kinetics of calcium carbonate, experimentally. Thirteen empirical correlations with ...
متن کاملIn Vitro Evaluation of Calcium Ions Diffusion and ph Changes of the Periradicular Environment with Conventional Calcium Hydroxide and Synthetic Nanoparticle Calcium Hydroxide as an Intra-Canal Medicament
Background and Aim: Therapeutic effects of calcium hydroxide as an intra-canal medicament depend on its decomposition into hydroxyl and calcium ions. The aim of this study was to determine the diffusion amount of calcium ion and ph changes around the tooth root in the application of conventional calcium hydroxide and Nano particle calcium hydroxide at different times. Material and Methods: In ...
متن کاملCalcium an Important Food Element
The absorption of dietary calcium (Ca) may in part be determined by the formation in the intestinal lumen of soluble Ca complexes and insoluble Ca salts. This study was undertaken to test the assumption that ionic Ca concentration (Ca2+) is the only species of Ca that is available for absorption. Bidirectional steady-state Ca fluxes were measured in vitro under short-circuit conditions across s...
متن کاملCalcium wave propagation by calcium-induced calcium release: an unusual excitable system.
We discuss in detail the behaviour of a model, proposed by Goldbeter et al. (1990. Proc. natn. Acad. Sci. 87, 1461-1465), for intracellular calcium wave propagation by calcium-induced calcium release, focusing our attention on excitability and the propagation of waves in one spatial dimension. The model with no diffusion behaves like a generic excitable system, and threshold behaviour, excitabi...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1989
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1541979