Results 221 to 230 of about 46,449 (257)

Topological Indices and Chemical Reactivity

1994
Chemical reactivity can be defined as the ability of the molecular structures to take part in the electronic rearrangement processes during chemical interactions. As electronic processes, one can consider hard (charge-charge) and soft (charge-transfer) electronic interactions as suggested by Klopman and Hudson in their polyelectronic perturbation ...
Ovanes Mekenyan, Subhash C. Basak
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Influence of confinement on atomic and molecular reactivity indicators in DFT

Physical Chemistry Chemical Physics, 2008
Spatial confinement of atoms and molecules influences electronic structures, energy spectra, and chemical reactivity. A simple potential barrier approach involving a single parameter is used to study confinement in both atoms and molecules, focusing on the reactivity of the systems through the HOMO-LUMO gap, which is linked to the global chemical ...
Borgoo, Alex, Tozer, D.j., Geerlings, Paul, De Proft, Frank   +3 more
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Some quantum mechanical indices of reactivity

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1975
1. A method was proposed for the determination of the effective Hamiltonian, on the basis of the ionization potentials of the molecule. 2. An interpretation was given for the elements of the matrix þ permitting their application to the explanation of the mechanism of chemical reactions. 3.
O. B. Tomilin, I. V. Stankevich
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Dewar indices and reactivity of phenylbenzene systems

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1968
1. A relation of the Dewar indices for the phenylbenzene molecules to the conjugation coefficient of the rings was found. 2. The behavior of the phenylbenzene systems in electrophilic substitution reactions was explained.
V. V. Zverev, G. P. Sharnin, I. D. Morozova   +2 more
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ChemInform Abstract: Indices of the Fullerenes Reactivity

ChemInform, 2011
AbstractReview: 57 refs.
Denis Sh. Sabirov, Ramil G. Bulgakov, Sergey L. Khursan   +2 more
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INDICATORS OF ETHOLOGICAL REACTIVITY OF COWS

Ġylym ža̋ne bìlìm
This research work compares the physiological and morphological characteristics of different genotypes and selection groups of Holsteins in summer and winter. The main objective of the study was to determine the physiological parameters of different genotypes, such as the time of rest, activity of rest and movement, and indicators of the development of
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Biochemical indices of reactivity and habituation in rats with hippocampal lesions

Pharmacology Biochemistry and Behavior, 1984
The response of rats with hippocampal lesions to acute and repeated footshock stress was assessed by measurement of pituitary cyclic AMP, plasma corticosterone and plasma prolactin. Levels of pituitary cyclic AMP and plasma prolactin and corticosterone were similar in never-shocked sham controls, and never-shocked hippocampal and neocortical lesion ...
G J, Kant, J L, Meyerhoff, L E, Jarrard
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C-reactive protein as an indicator of infection in the immunosuppressed child

European Journal of Pediatrics, 1986
C-reactive protein (CRP) concentrations were determined in a prospective fashion in 50 children with malignant disease. In 35 children with active and aggressive disease, but without signs of infection, no significant increase in CRP was detected. Neither did aggressive cytostatic therapy (70 courses) in non-infected children result in an increase.
M, Grønn, S H, Slørdahl, S, Skrede, S O, Lie   +3 more
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NEONATAL LYMPHOCYTE REACTIVITY AS AN INDICATOR OF INTRAUTERINE BACTERIAL CONTACT

The Lancet, 1968
Abstract The in-vitro response of neonatal lymphocytes to a microorganism was studied to determine whether it would serve as an indicator of intrauterine fœtal-antigen contact in infants born of mothers whose pregnancies were complicated by urinary-tract infection.
J I, Brody, F A, Oski, E E, Wallach
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Predicting reactivity with a general-purpose reactivity indicator

2023
Yoshio Barrera, James S.M. Anderson
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