Results 261 to 270 of about 249,574 (307)
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Increased-valence theory of valence
Journal of Chemical Education, 1968Describes several "increased valence" formulas for molecular systems with one or more sets of pour electrons distributed among three atomic orbitals of three atoms.
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1997
Valences are a very simple and yet powerful method of regulated rewriting. In this paper we give an overview on different aspects of this subject. We discuss closure properties of valence languages. It is shown that matrix grammars can be simulated by valence grammars over finite monoids.
Henning Fernau, Ralf Stiebe
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Valences are a very simple and yet powerful method of regulated rewriting. In this paper we give an overview on different aspects of this subject. We discuss closure properties of valence languages. It is shown that matrix grammars can be simulated by valence grammars over finite monoids.
Henning Fernau, Ralf Stiebe
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Physical Review Letters, 1992
Since the inception of Density Functional Theory (DFT) the remarkable success of the Local Density Approximation (LDA) has been difficult to improve in a systematic way. Originally Hohenberg, Kohn and Sham introduced LDA as the first term in a gradient expansion of the exchange-correlation energy functional[1].
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Since the inception of Density Functional Theory (DFT) the remarkable success of the Local Density Approximation (LDA) has been difficult to improve in a systematic way. Originally Hohenberg, Kohn and Sham introduced LDA as the first term in a gradient expansion of the exchange-correlation energy functional[1].
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VALENCE: a program for calculating bond valences
Journal of Applied Crystallography, 1996The DOS program VALENCE is designed to calculate bond valences from bond lengths and vice versa. It can also calculate bond-valence sums and average bond lengths, and can determine bond-valence parameters from the bonding environments of different cations.
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Emotion Review, 2009
In a provocative and important article, Robert Solomon argues that emotion researchers should abandon the notion of valence: it is used many different ways, and no single construct captures the pretheoretical distinction between positive and negative emotions.
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In a provocative and important article, Robert Solomon argues that emotion researchers should abandon the notion of valence: it is used many different ways, and no single construct captures the pretheoretical distinction between positive and negative emotions.
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Deep insight of the influence of Cu valence states in co-catalyst on CO2 photoreduction
Applied Catalysis B: Environmental, 2022Jiahui Ji, Haijiao Xie, Mingyang Xing
exaly