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  • 2010-2014  (12)
  • 1980-1984  (26)
  • 1975-1979  (13)
  • 2013  (4)
  • 2010  (8)
  • 1983  (8)
  • 1981  (18)
  • 1975  (13)
  • 1
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    Unknown
    High-Resolution Imaging of Texture and Microstructure by the Moving Detector Method (2010)
    Details
    Publication Date: 2021-03-29
    Description: In order to describe texture and microstructure of a polycrystalline material completely, crystal orientation g={?1F?2} must be known in all points x={x1?x2?x3} of the material. This can be achieved by locationresolved diffraction of high-energy, i.e. short-wave, X-rays from synchrotron sources. Highest resolution in the orientation- as well as the location-coordinates can be achieved by three variants of a detector sweeping technique in which an area detector is continuously moved during exposure. This technique results in two-dimensionally continuous images which are sections and projections of the six-dimensional orientation location space. Further evaluation of these images depends on whether individual grains are resolved in them or not. Because of the high penetration depth of high-energy synchrotron radiation in matter, this technique is also, and particularly, suitable for the investigation of the interior of big samples.
    Description: research
    Keywords: 548 ; VAE 120 ; VKA 200 ; VGA 410 ; Methodik {Strukturgeologie} ; Gefügekunde der Gesteine ; Röntgenanalyse {Mineralogie: Kristallographie}
    Language: English
    Type: article , publishedVersion
    Format: 18 S.
    Format: application/pdf
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    CITATION GEO-LEO
  • 2
    Electronic Resource
    Electronic Resource
    Tris(trimethylphosphine)cobalt(I) halides. Preparation and properties (1975)
    s.l. : American Chemical Society
    Inorganic chemistry 14 (1975), S. 473-477 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50145a004
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  • 3
    Electronic Resource
    Electronic Resource
    Nickel-trimethylphosphine complexes: crystal and molecular structure and decomposition reaction of methyltetrakis(trimethylphosphine)nickel(II) tetraphenylborate (1981)
    s.l. : American Chemical Society
    Inorganic chemistry 20 (1981), S. 2372-2376 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic50222a003
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  • 4
    Electronic Resource
    Electronic Resource
    Cytogenetische Untersuchung des peripheren Blutes beim familiären Neuroblastom (1975)
    Springer
    Human genetics 〈Berlin〉 28 (1975), S. 217-220 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Eine Familie mit 2 autoptisch gesicherten Neuroblastomen, einem Ganglioneuroblastom und Hinweisen auf 3 weitere Neuroblastome wurde cytogenetisch untersucht. Anlaß war der von Sandberg et al. (1972) mitgeteilte Befund von double-minute-Chromosomen in Lymphocyten des peripheren Blutes bei einem Neuroblastom. Die Untersuchung sollte klären, ob in dieser “Neuroblastom-Familie” eine chromosomale Aberration als erbliche Vorschädigung die Entstehung von Sympathicustumoren begüngstigt. Es fanden sich keine konstanten Chromosomenanomalien, auch keine double-minute-Chromosomen.
    Notes: Summary A cytogenetic investigation was performed in a family which included 2 individuals with congential neuroblastomas of the suprarenal gland confirmed by autopsy and one with a ganglioneuroblastoma of the thoracic wall as well as 3 other individuals with tumors which probably were also neuroblastomas. The lymphocytes of the peripheral blood of 5 healthy relatives as well as of the child with the treated ganglioneuroblastoma failed to show a constant alteration of chromosomes. In this family, therefore, the suggestion could not be proofed that the very rate familial aggregation of neuroblastomas is caused by a hereditary chromosomal aberration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278547
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  • 5
    Electronic Resource
    Electronic Resource
    Blasenbewegung aufgrund von Marangonikonvektion (1983)
    Springer
    Heat and mass transfer 17 (1983), S. 115-119 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Bewegungen von Gasblasen in einem vertikalen Temperaturgradienten werden experimentell untersucht. Die neben der Erdschwere als Bewegungsursache auftretende Grenzflächenkonvektion (Marangonikonvektion) an der Grenzfläche Blase/Medium wird im Lichte der Theorie von Young et al. diskutiert. Die Größe der Marangonizahl im Blaseninnern (N i Ma) bzw. im äußeren Medium (N e Ma) wird als Kriterium für die Anwendbarkeit der Theorie eingeführt. Die Experimente demonstrieren die Anwendbarkeit der Young-Theorie bis zur MarangonizahlN i Ma=10−2 bzw.N e Ma=2.
    Notes: Abstract This is an experimental study on gas bubble motion in a vertical temperature gradient. Surface tension convection (Marangoni convection) superimposing gravity is discussed with respect to the theory of Young et al. as another cause for bubble motion. The Marangoni numbers for the convection inside the bubble (N i Ma) and outside the bubble in the medium (N e Ma) are introduced as criterion for the applicability of the theory. It is shown by the experiments that the Young theory holds up to Marangoni numbersN i Ma=10−2 and Ne Ma=2, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01007227
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  • 6
    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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  • 7
    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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  • 8
    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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  • 9
    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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  • 10
    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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