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  • Chemistry  (9)
  • Cytochemical demonstration  (1)
  • FACILITIES, RESEARCH, AND SUPPORT  (1)
  • 2010-2014
  • 1980-1984  (4)
  • 1975-1979  (3)
  • 1970-1974  (4)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Pinocytosis and locomotion in amoebae (1979)
    Springer
    Protoplasma 100 (1979), S. 33-43 
    Details
    ISSN: 1615-6102
    Keywords: Amoeba proteus ; Ca++-binding sites ; Cytochemical demonstration ; Induced pinocytosis ; Plasma membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Different methods were used to demonstrate the existence of Ca++-binding sites (Ca++-bs) at the plasma membrane ofAmoeba proteus. In pinocytoting animals the number (indicated by the average distanced in nm) and size (average longitudinal axiss in nm) of Ca++-bs at the cytoplasmic surface of the cell membrane were significantly increased (d=162±15;n=41 ands=93±5;n=47) in comparison to controls (d=208 ±21;n=37 ands=59±8;n=45). The ratio of P: Ca obtained by X-ray microanalysis was in the range of 1.5. The differences observed in the two experimental groups of amoebae are explained by conformational changes in the molecular structure and an increased Ca++-permeability of the plasma membrane during induced pinocytosis. Microplasmodia of the acellular slime moldPhysarum polycephalum investigated for comparison were found to have no Ca++-bs at the interior cell surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276299
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  • 2
    Electronic Resource
    Electronic Resource
    Das Dimethylphosphinomethanid-Ion, (CH3)2PCH2⊖, ein neuer Ligand für Übergangsmetalle (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 87 (1975), S. 630-631 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19750871711
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  • 3
    Electronic Resource
    Electronic Resource
    [3 + 2]-Cycloadditionen von Allylkationen - Synthese von Permethylcyclopenten und anderen hochsubstituierten CyclopentenenDiese Arbeit wurde von der Deutschen Forschungsgemeinschaft, dem Fonds der Chemischen Industrie und durch Chemikalienspenden der Hoechst AG und BASF AG unterstützt. Wir danken Dr. E. Wilhelm für die NMR-Spektren. (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 93 (1981), S. 1069-1070 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19810931207
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  • 4
    Electronic Resource
    Electronic Resource
    The Dimethylphosphinomethanide Ion, (CH3)2PCH2⊖: A Novel Ligand for Transition Metals (1975)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 14 (1975), S. 637-638 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.197506371
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  • 5
    Electronic Resource
    Electronic Resource
    Ein Titan(IV)-Komplex mit zwei koordinativ gebundenen Wassermolekülen: [(π-C5H5)2 Ti(H2O)2](NO3)2 (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 476 (1981), S. 62-68 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A Titanium (IV) Complex with Two Coordinatively Bonded Water Molecules: [(π-C5H5)2Ti(H2O)2](NO3)2(π-C5H5)2Ti(NO3)2 and H2O react in acetone to form the diaquo complex [(π-C5H5)2-Ti(H2O)2](NO3)2 (A). An X-ray analysis shows the titanium atom to be nearly tetrahedrally coordinated. Mean values of distances: Ti—O 2.01 Å, Ti—Z 2.03 Å (Z = center of ring); angles: O—Ti—O 92.7°, Z—Ti—Z 133.6°. Anions and cations are joined by hydrogen bonds to form strands that run in the direction of the crystallographic a axis. A crystallizes in the orthorhombic space group Pnma with Z = 4 and lattice parameters at - 100°C a = 7.601(2), b = 13.458(4) and c = 13.139(4) Å.
    Notes: (π-C5H5)2Ti(NO3)2 reagiert mit Wasser in Aceton unter Bildung des Diaquokomplexes [(π-C5H5)2Ti(H2O)2](NO3)2 (A). Eine Röntgenstrukturanalyse ergibt, daß das Ti-Atom eine annähernd tetraedrische Koordination besitzt. Mittelwerte der Abstände: Ti—O 2,01 Å, Ti—Z 2,03 Å (Z = Ringzentrum); Winkel: O—Ti—O 92, 7°, Z—Ti—Z 133,6°. Die Anionen und Kationen sind entlang der kristallographischen a-Achse durch Wasserstoffbrücken zu Strängen verknüpft. A kristallisiert in der orthorhombischen Raumgruppe Pnma mit Z = 4 und den Gitterkonstanten bei — 100°C a = 7,601(2), b = 13,458(4) und c = 13,139(4) Å.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814760508
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  • 6
    Electronic Resource
    Electronic Resource
    Über die Umsetzung von Adipinsäurediamid mit Phosphorpentachlorid (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 396 (1973), S. 261-266 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of Adipic Acid Diamide with Phosphorus PentachlorideThe reaction of adipamide (I) with phosphorus pentachloride in a solvent leads to (Cl3P=NCCl2CCl2CH2)2 (II). The stages of the reaction are: 1. chlorination of the keto and methylen groups 2. formation of the —N=PCl3 group.This result is a supplement of the existing conception about the course of the reaction of carboxylic acid amides with phosphorus pentachloride.The reaction of (I) with PCl5 without any solvent has been reproduced and the course of reaction has also been investigated. This reaction gives mainly NC(CH2)4CN.The resulting product of a careful hydrolysis of (II) is (Cl2OPN=CClCl2CH2)2. A total hydrolysis gives back (I).
    Notes: Bei der Umsetzung von Adipinsäurediamid (I) mit Phosphorpentachlorid in einem Verdünnungsmittel bildet sich (Cl3P=NCCl2CCl2CH2)2 (II). Der Reaktionsablauf ist: 1. Chlorierung der Keto- und Methylengruppen und 2. Bildung der —N=PCl3-Gruppierung. Dieses Ergebnis ist eine Ergänzung der bisherigen Vorstellungen über den Reaktionsablauf bei der Umsetzung von Säureamiden mit Phosphorpentachlorid.Die Reaktion von (I) mit PCl5 ohne Lösungsmittel wurde nachgearbeitet und ebenfalls in ihrem Ablauf untersucht. Hierbei entsteht vornehmlich NC(CH2)4CN.Bei vorsichtiger Hydrolyse von (II) erhält man (Cl2OPN=CClCCl2CH2)2. Totalhydrolyse führt zur Rückbildung von (I).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733960303
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  • 7
    Electronic Resource
    Electronic Resource
    Ein neuer Beitrag zur Phosphazoreaktion (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 399 (1973), S. 225-230 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A New Contribution to the Phosphazo ReactionThe reaction of acrylonitrile with phosphorus pentachloride gives ClCH2CCl2CCl2NPCl3 (I) and a hexachlorophosphate with the composition C3H2Cl14NP3 (II). For the first time the structure of (II) has been exactly determined by using 1H- and 31P-NMR-spectra. The course of reaction was studied in detail. 3-chloropropionitrile has been found as the product of a secondary reaction. The reaction of butyramide with PCl5 has also been investigated, and was found to be analogous.
    Notes: Bei der Umsetzung von Acrylnitril mit PCl5 entsteht neben ClCH2CCl2CCl2NPCl3 (I) auch das Hexachlorophosphat mit der Zusammensetzung C3H2Cl14NP3 (II). Die Struktur von (II) konnte durch 1H- und 31P-NMR-Untersuchungen erstmals eindeutig bestimmt werden. Der gesamte Reaktionsablauf wurde untersucht. Infolge einer Sekundärreaktion entsteht u. a. 3-Chlorpropionitril. Die Umsetzung von Butyramid mit PCl5 wird ebenfalls beschrieben. Sie zeigt einen analogen Verlauf.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733990213
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  • 8
    Electronic Resource
    Electronic Resource
    Untersuchungen über Phosphazoverbindungen aus Anilinen mit PhosphorpentachloridFrau Professor Margot Becke-Goehring zum 60. Geburtstage gewidmet (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 406 (1974), S. 214-220 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Phosphazo Compounds from Anilines with Phosphorus PentachlorideThe reaction of anilines with PCl5 gives the monomer compound ArNPCl3. This will dimerize in many cases to (ArNPCl3)2. There are no indications for the former postulated intermediate product ArNHPCl4. We can correlate the tendency to dimerize with the basicity of the anilines. This is confirmed by the measurements of the constants of basicity in acetonitrile.
    Notes: Bei der Reaktion von Anilinen mit PCl5 entsteht die monomere Verbindung ArNPCl3. Diese dimerisiert in vielen Fällen zu (ArNPCl3)2. Für die früher postulierte Zwischenstufe ArNHPCl4 gibt es keine Hinweise. Die Neigung zur Dimerisation ist mit der Basizität der Aniline korrelierbar. Dies wird durch die Messung der Basenkonstanten in Acetonitril bestätigt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19744060213
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  • 9
    Electronic Resource
    Electronic Resource
    Strukturchemie titan-organischer Verbindungen: Die Struktur von [(π-C5H5)2 Ti(NO3)]2O (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 479 (1981), S. 113-118 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structural Chemistry of Organotitanium Compounds: Structure of [(π-C5H5)2Ti(NO3)]2OCareful hydrolysis of (π-C5H5)2Ti(NO3)2 in tetrahydrofuran yields crystals of [(π-C5H5)2Ti(NO3)]2O (A). Crystal data of A: monoclinic, space group P21/c; lattice constants: a = 12.656(4), b = 10.181(5), c = 16.197(3) Å, ß = 93.57(3)º, Z = 4. As an X-ray analysis shows, the NO3 groups act as monodentate ligands with Ti—O distances of 2.085 and 2.059 Å. The ligands are arranged in a nearly tetrahedral way around the Ti atoms. The bond angle at the bridging O atom is 171.8º.
    Notes: Bei der vorsichtigen Hydrolyse von (π-C5H5)2Ti(NO3)2 in Tetrahydrofuran entsteht der Zweikernkomplex [(π-C5H5)2Ti(NO3)]2O (A) Kristalldaten von A: monoklin, Raumgruppe P21/c; Gitterkonstanten: a = 12,656(4), b = 10,181(5), c = 16,197(3) Å, ß = 93,57(3)º und Z = 4. Eine Röntgenstrukturanalyse ergibt, daß die Nitratgruppen als einzähnige Liganden mit Ti—O-Abständen von 2,085 und 2,059 Å fungieren. Die Ti-Atome weisen eine annähernd tetraedrische Koordination auf. Der Winkel am Brücken-O-Atom beträgt 171,8º.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814790813
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  • 10
    Electronic Resource
    Electronic Resource
    Microcomputers in small injection molding machines - operation and design (1984)
    Hoboken, NJ : Wiley-Blackwell
    Advances in Polymer Technology 4 (1984), S. 51-60 
    Details
    ISSN: 0730-6679
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Modern, trend-setting small injection molding machines should be designed so that they open up new applications to the plastics processor through utilization of microelectronics. In the sector of control, it would be equivalent to stagnation if only the familiar functions were realized with modern control circuits of a higher integration level and if the possibilities of these modules were not utilized to simplify operation, to expand the technological possibilities, and to illustrate the sequences of processes. The mechanical and hydraulic designs should be adjusted to these requirements.The design and extent of the electronic control system should be such as to ensure an economically reasonable relation between extra price and additional benefit - a basic requirement for offering standard supplies.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/adv.1984.060040105
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