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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 61 to 70 of 391 (0.081 seconds)| 61 |
The effects of donnan equilibria in clay and resin systems and plant root exchange capacities on cation uptake by plants /Franklin, Ralph Earl January 1961 (has links)
No description available.
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| 62 |
A light scattering investigation of the effects of a series of cations on the solution properties of potassium polymetaphosphate /Peterson, Jack Kenneth January 1961 (has links)
No description available.
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| 63 |
A chemical modification study of the mechanism for cation regulation of photosystem I particle activity /Burkey, Kent Oliver January 1981 (has links)
No description available.
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| 64 |
Spectroelectrochemical examination of the reactions of chlorpromazine cation radical /Mayausky, John S. January 1982 (has links)
No description available.
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| 65 |
Complementary ion effect on K, Na and Ca release from bentonite and illite clay as affected from pH-dependent charge cation exchange capacity and base saturation /De Bittencourt, Valdomiro Correa January 1972 (has links)
No description available.
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| 66 |
Effect of permanent and pH-dependent charges on clay-phase retention and excised root uptake from Donnan-type systems of vermiculite and kaolinite /Baweja, Anar Singh January 1972 (has links)
No description available.
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| 67 |
Study of the formation and reactivity of organic cations in solution by the pulse radiolysis method /Wang, Ying January 1978 (has links)
No description available.
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A Positive Ion SourceHannah, Kenneth W. 08 1900 (has links)
This paper describes the construction of a positive ion source of the electrodeless discharge type and may be divided into two main topis; (1) the radio frequency oscillator and power amplifier and associated power supply and (2) the ionization chamber.
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| 69 |
Étude de la courbe courant-voltage de la Na+-K+-ATPase chez les ovocytes de Xenopus laevis : effets des cations multivalents et de la charge de surfaceSt-Jean, Hélène January 1992 (has links)
Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.
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H-bond donor parameters for cationsPike, Sarah J., Lavagnini, E., Varley, L.M., Cook, J.L., Hunter, C.A. 20 February 2020 (has links)
Yes / UV/Vis absorption and NMR spectroscopy titrations have been used to investigate the formation of complexes between cations and neutral H-bond acceptors in organic solvents. Complexes formed by two different H-bond acceptors with fifteen different cations were studied in acetone and in acetonitrile. The effects of water and ion pairing with the counter-anion were found to be negligible in the two polar solvents employed for this study. The data were used to determine self-consistent H-bond donor parameters (α) for a series of organic and inorganic cations; guanidinium, primary, tertiary and quaternary ammonium, imidazolium, methylpyridinium, lithium, sodium, potassium, rubidium and caesium. The results demonstrate the transferability of α parameters for cations between different solvents and different H-bond acceptor partners, allowing reliable prediction of cation recognition properties in different environments. Lithium and protonated nitrogen cations form the most stable complexes, but the α parameter is only 5.0, which is similar to the neutral H-bond donor 3-trifluoromethyl, 4-nitrophenol (α = 5.1). Quaternary ammonium is the weakest H-bond donor investigated with an α value of 2.7, which is comparable to an alcohol. The α parameters for alkali metal cations decrease down the group from 5.0 (Li+) to 3.5 (Cs+). / Financial support from the Engineering and Physical Sciences Research Council (EP/K025627/2) and Unilever
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