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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 16 (1969), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— 〈list xml:id="l1" style="custom"〉1Breathing oxygen (1 atm.) for 2 hr increased the glycogen content of the rat brain from 3·38 to 4·35 μmoles glucosyl residues/g wet wt. At the same time the glucose and lactate concentrations were significantly decreased.2Both under normal conditions and when breathing oxygen, the sum (glycogen + glucose) × 2 + lactate, with which the balance of carbohydrate breakdown and lactate formation was assessed, was 13·5 μmoles/g wet wt.2Oxygen breathing effected a significant decrease in this sum after an ischaemic period of 1–15 min. In the control group breathing normal air, the sum, after all periods of ischaemia, ranged from 98 to 106 per cent of the starting value.3An increased partial pressure of oxygen did not change the breakdown rate of the high-energy phosphate compounds. This result was not consistent with an oxidation of the carbohydrates which were missing in the balance. It is probable that other metabolites, which were not tested for, accumulated.50 We failed to find any indication of storage of oxygen which the ischaemic brain could use for oxidative energy production.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 56 (1969), S. 644-644 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 55 (1968), S. 659-660 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 56 (1969), S. 272-277 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 14 (1969), S. 263-272 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es werden alle Integrale angegeben, die sich im Rahmen der quantenchemischen Rechnungen bei Verwendung von elliptischen Gaußfunktionen ergeben. Es zeigt sich dabei, daß die Integrationen ähnlich verlaufen wie bei den reinen Gaußfunktionen, die bisher verwendet wurden.
    Abstract: Résumé Toutes les intégrales d'un calcul de chimie quantique sont exprimées au moyen de fonctions gaussiennes elliptiques. La technique d'intégration est semblable à celle utilisée jusqu'à présent pour les fonctions gaussiennes pures.
    Notes: Abstract All integrals which result from quantum chemical calculations are given by means of elliptical Gaussian functions. The technique of integration is similar to that of the pure Gaussian functions which have been used up to now.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 3 (1965), S. 117-125 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 6 (1966), S. 413-427 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract For threeatomic systems the quadratic approximation formulas are discussed. A method for estimating the coefficients is pointed out. Rough linear approximations for the energy hypersurfaces of the systems H 3 + and He, H, H are given. In this connection the necessary partial systems (H2, H 2 + , He 2 + , HeH+) are investigated, using approximations of different degree. Taking into account the simple form of approximation the results are good.
    Abstract: Résumé Etablissement et discussion des formules d'approximation dans le cas de trois atomes à l'approximation quadratique. La manière de calculer les coefficients est indiquée. Après avoir à titre d'exemples calculé dans ce contexte quelques systèmes partiels nécessaires (H2, H 2 + , He 2 + , He H+), ce qui permet de trouver la validité de différentes approximations, nous donnerous les hypersurgaces d'énergie des systèmes H 3 + et He, H, H dans une approximation linéaire. Quoique l'approximation soit primitive elle est satisfaisante.
    Notes: Zusammenfassung Es werden die Approximationsformeln für den Fall von drei Atomen in quadratischer Näherung angegeben und diskutiert. Im einzelnen wird der Berechnungsweg der Koeffizienten aufgezeigt. Nachdem die in diesem Zusammenhang notwendigen Teilsysteme an einigen Beispielen erläutert werden (H2, H 2 + , He 2 + , HeH+), wobei verschiedene Approximationsstufen Verwertung finden, werden vorerst grobe Näherungen für die Energiehyperflächen der Systeme H 3 + und He, H, H in linearer Approximation angegeben. In Anbetracht der primitiven Näherung ist die Güte der Approximation zufriedenstellend.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical chemistry accounts 6 (1966), S. 428-436 
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract It is pointed out, that there is a connection between the p- and pq-approximation of part I and the approximation for polyatomic systems discussed in part II and III. So the p- and pq-approximation can be revised and certain parameter be estimated. In this way more conditions can be satisfied which the molecular energy has to fullfill and which have not been taken into account so far. The connection discussed are pointing out a general scheme for building up approximations of polyatomic systems.
    Abstract: Résumé On montrera qu'il existe un lien entre l'approximation p et pq de la première partie de ce travail et l'approximation pour les hypersurfaces d'énergie des systèmes polyatomiques utilisée dans le parties II et III. Ceci permet une amélioration de la représentation p et pq, ainsi qu'une estimation de certains paramètres dans cette approximation. De cette manière il est possible de remplir des conditions supplémentaires sur l'évolution de l'énergie moléculaire, qui n'étaient pas jusqu'alors satisfaisantes. Ces rapports indiquent la possibilité de construire les approximations selon le nombre de centres d'après un schéma général.
    Notes: Zusammenfassung Es wird gezeigt, daß zwischen der p- und pq-Näherung von Teil I dieser Arbeit und der Approximation für Potentialflächen mehratomiger Systeme, die in den Fortsetzungen II und III behandelt wurde, ein Zusammenhang besteht. Dieser erlaubt, die p- und pq-Darstellungen zu verbessern und gewisse Parameter in der Approximation zu bestimmen. Auf diese Weise ist es möglich, weitere Forderungen an den Verlauf der Molekülenergie zu erfüllen, die bisher noch unvollständig befriedigt wurden. Die aufgezeigten Zusammenhänge weisen auf eine Möglichkeit hin, den Aufbau der Approximationen bezüglich der Zentrenanzahl nach einem allgemeinen Schema durchführen zu können.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 1 (1967), S. 349-355 
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The C5H5- ion has been investigated ab initio in the equilibrium distance of the centers, taking all 36 electrons into account, using the Allgemeines Programmsystem/SCF—MO—LC(LCGO) Methode. A total energy of -189.42 a.u. and an ionization energy (electron affinity of C5H5) of 0.9 eV were found. A most significant result is that one π orbital is more strongly binding than four σ orbitals.
    Abstract: On présente un calcul ab initio de la molécule C5H5- pour la distance à l'équilibre des noyaux, basé sur Allgemeines Programmsystem/SCF-MO-LC (LCGO) Methode. Tous les 36 électrons ont été considérés. On trouve pour l'énergie totale -189.42 u.a. et pour l'énergie d'ionisation (l'affinité électronique de C5H5) 0.9 eV. L'une des orbitales π est plus liante que quatre des orbitales σ.
    Notes: Das C5H5- wird im Gleichgewichtsabstand der Zentren unter Berücksichtigung aller 36 Elektronen ab initio mit Hilfe des Allgemeinen Programmsystems/SCF—MO—LC(LCGO) Methode berechnet. Es ergibt sich eine Gesamtenergie von -189,42 a.E. Die Ionisierungsenergie (Elektronenaffinität des C5H5) beträgt 0,9 eV. Bei den Einteilchenenergien sind in energetischer Folge den π-Zuständen σ-Zustände eingelagert.
    Type of Medium: Electronic Resource
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