Results 231 to 240 of about 115,920 (303)

Two on physical and theoretical chemistry

Nature, 1980
Statistical Thermodynamics of Simple Liquids and their Mixtures. By T. Boublik, I. Nezbeda and K. Hlavaty. Pp.145. Published by (Elsevier: Amsterdam and New York, 1980.) $41.50, Dfl.85. Weak Inter-molecular Interactions in Chemistry and Biology. By P. Hobza and R. Zahradnik. Pp.346. (Elsevier: Amsterdam and New York, 1980.) $48.75, Dfl.100.
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The Physical and Theoretical Chemistry of Oxygen

1968
Oxygen, which is the subject of this symposium is probably created during the helium-burning phase of stars. The nuclear reactions involved in the production of the three stable isotopes of oxygen are shown in Fig. 1. The stepwise reactions in which O16, O17 and finally O18 are produced probably occur at temperatures of the order of 108 degrees Kelvin ...
David Samuel   +4 more
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Some theoretical problems in chemistry and physics

International Journal of Quantum Chemistry, 2006
AbstractRecently the need for incorporating so‐called Jordan blocks in the theoretical formulation of dynamical processes in Nature has been confronted and challenged. In addition, quantum mechanics has evolved from the very theoretical to the highly technological prompting the establishment of the new field of quantum technology. Initial studies in an
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Theoretical studies in the chemistry and physics of heterocycles

Theoretica Chimica Acta, 1966
LCAO-SCF calculations with four different sets of parameters are given for the π-electron structure of pyrrole. The aim was mainly to discuss whether such a kind of calculations could account for the molecular properties, or the σ system ought to be explicitly included. The effects of different values for the integrals were discussed by comparing final
Paolo Chiorboli   +2 more
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Ανάπτυξη της Φυσικοχημείας: Θεωρητική και Πειραματική Προσέγγιση

2014
Definition, classification and proof constitute the trilogy of methods of development and systematic presentation of Physical Chemistry. Through definition we disclose the logical comprehension of a concept and therefore we make it clear. Through classification we delimit the logical extension of a concept and therefore we make it perspicuous.
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Theoretical Chemistry and Physics of Heavy and Superheavy Elements

2003
1 Theoretical Chemistry and Physics of Heavy and Superheavy Elements.- 2 Basic elements of relativistic quantum mechanics.- 3 The Chemistry of the Heaviest Elements.- 4 Core and valence electron distributions in heavy elements by x-ray and electron spectroscopy.- 5 Four-component electronic structure methods for atoms.- 6 Four-component electronic ...
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Variational Principles and Methods in Theoretical Physics and Chemistry

2002
This book brings together the essential ideas and methods behind applications of variational theory in theoretical physics and chemistry. The emphasis is on understanding physical and computational applications of variational methodology rather than on rigorous mathematical formalism.
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Theoretical Chemistry and Physics of Heavy and Superheavy Elements — An Introduction

2003
In the Middle Ages, the Alchemists failed completely in their attempts to transmute lead or other base metals into gold1. Today, we can not only transmute one element to another but create new elements unknown to Nature. We can achieve this transmutation not only in our experiments but also in our theories. We have thus created New Alchemies!
S. Wilson, U. Kaldor
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Exploring the Chemistry of Re(I): Physical and Theoretical Investigations

2015
The development of Rhenium I photocatalysts has been pursued since Lehn first showed the excellent performance of the ReI bipyridine tricarbonyl catalyst. Since then, devel- opment has modified the organic ligand to demonstrate continued or improved activity with other α-diimine bidentate geometries.
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