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  • Inorganic Chemistry  (1,488)
  • Organic Chemistry  (1,390)
  • Surface physics, nanoscale physics, low-dimensional systems  (1,077)
  • Chemical Engineering  (824)
  • Cell & Developmental Biology
  • Humans
  • 2015-2019  (1,087)
  • 1975-1979  (4,852)
  • 2017  (1,087)
  • 1979  (2,477)
  • 1978  (2,375)
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  • 2015-2019  (1,087)
  • 1975-1979  (4,852)
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  • 1
    Electronic Resource
    Electronic Resource
    Modellrechnungen zum Gegenioneneinfluß auf die kationische Polymerisation; Der Zerfall der gemischten Halogenoantimonate SbCl5Br- und SbClBr5- (1979)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 321 (1979), S. 1000-1006 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Model Calculations on the Counterion Effect in the Cationic Polymerization; Decay of the Mixed Halogenoantimonates SbCl5Br- and SbClBr5-The decay of the halogenoantimonates SbCl5Br- and SbClBr5- according to SbCl5Br- → SbCl5 + Br- resp. SbCl4Br + Cl- and SbClBr5- → SbBr5 + Cl- resp. SbClBr4 + Br- has been investigated by the quantum-chemical CNDO/2 method including geometry optimization. The calculations show that the dissociation of the Sb—Cl bond needs more energy (7,8 kcal/mol) than the dissociation of the Sb—Br bond.Dissociation of the complex anions is facilitated with increasing Br content.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19793210615
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  • 2
    Electronic Resource
    Electronic Resource
    Power consumption and gas capacity of self-inducting turbo aerators (1979)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 25 (1979), S. 763-773 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A theoretical and experimental analysis of self-inducting turbo aerator performance was carried out based on the theory of water jet injector operation. It was shown that the aerator's injection coefficient is completely determined by only two dimensionless groups, CH and EuG, between which there is a single valued dependence on whose basis generalization of experimental data is possible. An analytical expression for the optimality criterion or aerator performance index, accounting for aerator gas capacity, power consumption, and submergence, has been obtained in terms of CH and EuG with only one adjustable parameter. From the above two dependencies, a methodology was developed for determining optimal operating conditions, by means of which all the data necessary for the optimal design can be obtained from the results of bench scale experiment.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690250504
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  • 3
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    Fano-shaped impurity spectral density, electric-field-induced in-gap state, and local magnetic moment of an adatom on trilayer graphene (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-08-12
    Description: Author(s): Zu-Quan Zhang, Shuai Li, Jing-Tao Lü, and Jin-Hua Gao Recently, the existence of local magnetic moment in a hydrogen adatom on graphene was confirmed experimentally [González-Herrero et al. , Science 352 , 437 (2016) ]. Inspired by this breakthrough, we theoretically investigate the top-site adatom on trilayer graphene (TLG) by solving the Anderson impur... [Phys. Rev. B 96, 075410] Published Tue Aug 08, 2017
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Thermal transport through a spin-phonon interacting junction: A nonequilibrium Green's function method study (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-09-23
    Description: Author(s): Zu-Quan Zhang and Jing-Tao Lü Using the nonequilibrium Green's function method, we consider heat transport in an insulating ferromagnetic spin chain model with spin-phonon interaction under an external magnetic field. Employing the Holstein-Primakoff transformation to the spin system, we treat the resulted magnon-phonon interact... [Phys. Rev. B 96, 125432] Published Thu Sep 21, 2017
    Keywords: Surface physics, nanoscale physics, low-dimensional systems
    Print ISSN: 1098-0121
    Electronic ISSN: 1095-3795
    Topics: Physics
    Published by American Physical Society (APS)
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  • 5
    Electronic Resource
    Electronic Resource
    Trace element uptake by L-cells as a function of trace elements in a synthetic growth medium (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 101 (1979), S. 57-65 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The concentration of trace elements in L-cells has been studied as a function of the trace metal content of the growth medium. Cells were cultured in synthetic media which contained varying trace amounts of the elements manganese, iron, cobalt, copper, zinc and molybdenum. The cellular concentration of the elements potassium, iron, copper and zinc were then determined. It was found that the cell accumulates trace metals at a different rate than they are made available. Deficiencies in zinc could be “induced” in the cell by increasing the concentration of iron, manganese and cobalt; cellular iron deficiencies were observed at larger medium concentrations of zinc, manganese, copper and cobalt. Trace metal uptake by the cell was seen to parallel the utilization by multicellular organisms.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1041010108
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  • 6
    Electronic Resource
    Electronic Resource
    Über TlPd3O4 und TlPt3O4 - ternäre Platinmetalloxide mit Käfigstruktur (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 443 (1978), S. 11-18 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: TlPd3O4 and TlPt3O4 - Ternary Platinum Metal Oxides with Cluster StructureThe crystal structure of the cardinal red oxide TlPd3O4, prepared by the reaction of Pdo with TlNO3 or Tl2O3 at 550°C, has been determined on powder samples by X-ray and neutron diffraction. The structure of the cubic compound (a = 959.6(2) pm; space group Fm3m; Z = 8) contains square-planar PdO4 units which are joined to a three dimensional skeleton by triply bonding oxygen atoms. The cubic and rhombicuboctahedral spaces are occupied by TlIII and TlI cations so that the compound can be formulated as a mixed valency thallium(III)-thallium(I)-oxopalladate(II). The relationship with the structure of the platinum bronzes is discussed.The analogous ternary platinum oxide TlPt3O4 (a = 966.3(2)pm) has been obtained by thermal decomposition of Tl2Pt2O7.
    Notes: Die Kristallstruktur des durch Umsetzung von Pdo mit TlNO3 bzw. Tl2O3 bei 550°C erhaltenen kardinalroten Oxides TlPd3O4 wurde durch Röntgen-und Neutronenbeugung an Pulverproben aufgeklärt. In der Struktur der kubischen Verbindung (a = 959,6(2) pm; Raumgruppe Fm3m; Z = 8) sind quadratisch planare Pdo4- Baugruppen über dreibindige O- Atome zu einem dreidimensionalen Netz verknüpft. Die würfelförmigen und rhombendodekaedrischen Hohlräume des Gerüstes sind von TlIII-bzw. TlI-Kationen besetzt, so daß die Verbindung als valenzgemischtes Thallium (III)-thallium(I)-oxopalladat(II) formuliert werden kann. Die Verwandtschaftsverhältnisse zu den Strukturen der Platinbronzen werden diskutiert.Das entsprechende Oxoplatinat TlPt3O4 (a = 966,3(2) pm) konnte durch thermische Zersetzung von Tl2Pt2O7 erhalten werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784430102
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  • 7
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. XIV [1]. Synthesen mit 1,2,2,2-Tetrachlorethylisocyanat (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 625-633 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatives of Halogenated Aldehydes. XIV. Reactions of 1,2,2,2-Tetrachloroethyl Isocyanate1,2,2,2-Tetrachloroethyl isocyanate 2 reacts with alcohols or phenols to form the N-tetrachloroethyl-O-alkyl(aryl) urethanes 3-6. With thioalcohols and thiophenols the corresponding thiourethanes 11-12 are obtained. In these compounds the chlorine in position 1 can be substituted by treatment with a nucleophilic compound in the presence of a base by way of an elimination addition mechanism. In these reactions the compounds 7-10 and 13-14 are formed. Amines attack 2 at both active centres to give the substituted ureas 15-18. Diphenyl amine, some carboxylic acid amides and benzazoles, however, react only with the isocyanate group to form the compounds 19-25. Reactions of 2-amino-benzazoles, 2-amino-pyridine and amidines with 2 yield the heterocyclic compounds 26-31.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200416
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  • 8
    Electronic Resource
    Electronic Resource
    Selektive Umsetzungen von Kohlenhydraten mit Isocyanaten (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 789-794 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Selective Reactions of Carbohydrates with Isocyanates6-O-Arylcarbamoyl-D-galactose dialkyl dithloacetals 2a-n are prepared by selective reactions of D-galactose dialkyl dithioacetals with aryl isocyanates in pyridine. Some of them are acetylated to give the 2,3,4,5-tetra-O-acetyl derivatives 3a, b, i-m. The structures of the compounds 2 and 3 are proved by further synthesis from 1,2;3,4-di-O-isopropylidene-D-galactose or 2,3,4,5-tetra-O-acetyl-D-galactose diethyl dithioacetal, respectively.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200511
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  • 9
    Electronic Resource
    Electronic Resource
    Selektive Umsetzungen von Kohlenhydraten mit Phenylisothiocyanat (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 795-797 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Selective Reactions of Carbohydrates with Phenyl IsothiocyanateD-Galactose dialkyl dithioacetals, o-nitrophenyl-β-D-galactopyranoside and 1,2-O-trichloroethylidene β-D-glucofuranose react by treatment with phenyl isothiocyanate in pyridine only at the primary hydroxyl group to form the corresponding 6-O-phenylthiocarbamoyl compounds 2a-d, 4 and 6.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200512
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  • 10
    Electronic Resource
    Electronic Resource
    Bromination of α-Benzylidene-γ-butyrolactone (1978)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 124-128 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Substituierte γ-Lactone, XXVII.  -  Bromierung von α-Benzyliden-γ-butyrolactonDie Bromierung von α-Benzyliden-γ-butyrolacton (1) mit N-Bromsuccinimid verläuft unter Allylumlagerung zu 3-(α-Brombenzyl)-2(5H)-furanon (3a). Eine Anzahl von Reaktionen mit dieser Verbindung wird beschrieben. Die Bromierung von 1 mit elementarem Brom führt zur Anlagerungsverbindung α-Brom-α-(α-brombenzyl)-γ-butyrolacton.
    Notes: The N-bromosuccinimide bromination of α-benzylidene-γ-butyrolactone (1) proceeds with allylic rearrangement to yield 3-(α-bromobenzyl)-2(5H)-furanone (3a). A number of reactions of this compound are described. Bromination of 1 with elemental bromine leads to α-bromo-α-(α-bromobenzyl)-γ-butyrolactone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197819780115
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