Hydrogen Ion Concentration
Mostrando 25-36 de 149 artigos, teses e dissertações.
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25. Novel material for nickel recuperation
Graft polymerization of N-vinyl-2-pyrrolidone with chitin was studied using hydrogen peroxide for initiation. The capacity of the obtained VP-g-Ch graft copolymer for adsorption of nickel was examined. The effect of temperature, pH and solute concentration on the chelating properties of the grafted and ungrafted chitin were determined. The thermal profiles o
Materials Research. Publicado em: 2001
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26. Propriedades estruturais da liga de a-Si-x Cx:H
In this present work, we mainly study the tendency of formation of homonuclear and heteronuclear bonds (chemical order) in a-Si1-xCx:H deposited by RF co-sputtering, and its correlation with optical properties, such as gap energy and structural disorder. The reason on using this deposition technique is that it permits the control of the hydrogen content whil
Publicado em: 1996
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27. Determinação espectrofotometrica automatizada de cobre e zinco em amostras de interesse agroindustrial por metodos cineticos
Determination of copper and zinc in soiIs, fertilizers, plant materiaIs, aIloys, etc, are of great concern since they are included among the most required metaIs by man in modern life and are essential for animal and vegetal growth. In the present paper, kinetic methods for determination of these metaIs exploiting the flow injection principIe were proposed.
Publicado em: 1993
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28. Ressonancia paramagnetica eletronica do ion Gd3+, em hidretos metalicos do tipo fase de laves AB2Hx
The ternary intermetallic hydrides LaRu2Hx, CeRu2Hx, YRh2Hx and YNi2Hx, doped with Gd3+ ions, were investigated in function of both the hydrogen concentration, x, and temperature. A single EPR line was observed for Gd in the uncharged LaRu2 compound (x = O) in the normal state. The EPR parameters were found in good agreement with the previously published dat
Publicado em: 1988
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29. Otimização das condições para titulações potenciometricas de proteinas em soluções concentradas de ureia : titulações potenciometricas da proteina de Bence Jones (JJO)
In previous studies carried out in this laboratory involving acid-base titrations in concentrated urea solutions a large variation in the liquid junction potential and/or the activity coefficient of hydrogen ion has been observed during the tritation. In this investigation it tas been shown that such variations are dependent on the change in composition of t
Publicado em: 1986
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30. EFFECT OF HYDROGEN-ION CONCENTRATION ON CHLORELLA PHOTOSYNTHESIS
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31. Hydrogen Ion Concentration. Vol. I. The Theoretical Principles
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32. Characteristics of Hydrogen Ion Transport in Urinary Bladder of Water Turtle*
The mechanism of acidification by the urinary bladder of the water turtle was studied in an in vitro system which permitted control and measurement of electrical and concentration driving forces. The rate of hydrogen ion secretion was measured by means of a pH stat technique in the absence of exogenous carbon dioxide and bicarbonate.
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33. The Influence of Hydrogen Ion Concentration and Hypoxia on the Pulmonary Circulation*
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34. HYDROGEN ION CONCENTRATION AND SEXUAL EXPRESSION IN LYCHNIS DIOICA L1
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35. PROBABLE DIFFERENCES BETWEEN INTRACELLULAR AND EXTRACELLULAR HYDROGEN-ION CONCENTRATION OF CERTAIN COLIFORMS
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36. A Study of the Variations in Hydrogen-Ion Concentration of Broth Media