Ca-K-Na exchange equilibria on a smectitic soil: Modeling the variation of selectivity coefficient
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چکیده
منابع مشابه
Na-Ca or Na-Ca-K exchange in rod photoreceptors.
Remarkably dynamic Ca z ÷ fluxes control Ca 2 ÷ homeostasis in the outer segments of vertebrate rod photoreceptors (ROS). Ca 2 ÷ fluxes are believed to be carried by only two different membrane proteins embedded in the ROS plasma membrane; these two proteins as well as some of the other main molecular components of ROS are schematically depicted in Fig. 1. ROS are the sites of the process of vi...
متن کاملan estimation of gapon selectivity coefficient for na/ca+mg exchange in some salt-affected soils of tabriz plain
studies by the us salinity laboratory, using gapon rule, led to the value of 0.01475 (mmol l-1)-0.5for the modified gapon selectivity coefficient (k'g). nevertheless, the results of subsequent research reveled that k'g isn’t constant and could take on a wide range of values depending on soil properties. the aim of this study was to determine the relationship between exchangeable sodiu...
متن کاملبررسی تعادل پتاسیم - کلسیم در برخی از خاک های آهکی خراسان
The presence of large amounts of calcium in the equilibrium system of calcareous soils of arid and semi-arid regions affects the chemical reactions of soluble and exchangeable phases. Exchange phenomenon is one of these chemical reactions in which calcium plays an important role. K-Ca equilibria are important equilibria in calcareous soils and may be an answer to many problems in soil chemistry...
متن کاملبررسی تعادل پتاسیم - کلسیم در برخی از خاک های آهکی خراسان
The presence of large amounts of calcium in the equilibrium system of calcareous soils of arid and semi-arid regions affects the chemical reactions of soluble and exchangeable phases. Exchange phenomenon is one of these chemical reactions in which calcium plays an important role. K-Ca equilibria are important equilibria in calcareous soils and may be an answer to many problems in soil chemistry...
متن کاملRegulation of cardiac myocyte contractility by phospholemman: Na /Ca exchange versus Na -K -ATPase
Jianliang Song, Xue-Qian Zhang, JuFang Wang, Ellina Cheskis, Tung O. Chan, Arthur M. Feldman, Amy L. Tucker, and Joseph Y. Cheung Division of Nephrology and Center of Translational Medicine, Department of Medicine, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania; and Cardiovascular Division, Department of Internal Medicine, University of Virginia Health Scienc...
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ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1994
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1994.10414302