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  • 1
    Electronic Resource
    Electronic Resource
    mini-chiuz (1990)
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 24 (1990), S. 206-214 
    Details
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ciuz.19900240502
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  • 2
    Electronic Resource
    Electronic Resource
    Experimentelle Untersuchung des statistischen Größeneinflusses im Dauerschwingversuch an ungekerbten Stahlproben (1975)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 6 (1975), S. 52-54 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Experimental Investigation of the Statistical Size-Effect in Fatigue Tests with Unnotched Specimens.In constant-load-fatigue-tests with unnotched specimens of different lengths, the statistical effect of specimen's size in probability of lifetime to fracture was determined.
    Notes: Im einstufigen Dauerschwingversuch an ungekerbten Proben mit unterschiedlichen Meßlängen konnte der statistische Einfluß der Probengröße auf deren Bruchwahrscheinlichkeit experimentell nachgewiesen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19750060204
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  • 3
    Electronic Resource
    Electronic Resource
    Instrumentation for SFC systems: Different sampling and restriction designs (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 191-197 
    Details
    ISSN: 0935-6304
    Keywords: Capillary SFC ; Instrumentation ; Sampling techniques ; Restrictors ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Different designs of injection and restriction devices for capillary supercritical fluid chromatography (SFC) have been investigated with respect to their practical applicability and usefulness for reproducible and accurate qualitative and quantitative analyses. In combination with a self-made instrument a fast switching valve is preferable as an injection device compared to a split-injector, and an integral restrictor made from the end of the fused silica (FS) separation column was superior to a linear restrictor made by coupling a small diameter FS-column to the separation column.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110210
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  • 4
    Electronic Resource
    Electronic Resource
    Produktbereiche bei der Rektifikation homogenazeotroper Mehrstoffgemische (1992)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 64 (1992), S. 793-793 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330640939
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  • 5
    Electronic Resource
    Electronic Resource
    Retrofit-Design und Kostenoptimierung einer großtechnisch realisierten Extraktivrektifikation (1997)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 69 (1997), S. 1229-1230 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330690920
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  • 6
    Electronic Resource
    Electronic Resource
    39. Mehrgrößenregelkonzepte für Rektifikationskolonnen auf Basis von Betriebsdaten und stationären Modellen (1996)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1088-1088 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330680941
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  • 7
    Electronic Resource
    Electronic Resource
    163. Die diskontinuierliche Rektifikation azeotroper Gemische in der betrieblichen Praxis (1994)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 66 (1994), S. 1257-1258 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.3306609164
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  • 8
    Electronic Resource
    Electronic Resource
    Industrielle Anorganische Chemie Von W. Büchner R. Schliebs G. Winter und K. H. Büchel Verlag Chemie, Weinheim 1984.XXIII, 645 S., geb. DM 108.00  - ISBN 3-527Y26069-2 (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 98 (1986), S. 113-113 
    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.19860980134
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  • 9
    Electronic Resource
    Electronic Resource
    Darstellung, Strukturen und Eigenschaften von SmBeF4 und SrBeF4  -  ungewöhnliche Varianten der BarytstrukturIn memoriam Professor Wilhelm Klemm (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 179-186 
    Details
    ISSN: 0044-2313
    Keywords: Strontium beryllium tetrafluoride ; samarium beryllium tetrafluoride ; structure ; divalent Samarium ; luminescence ; magnetism ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Structures, and Properties of SmBeF4 and SrBeF4 - Unusual Variants of the Baryt Type StructureSmBeF4 has been obtained as orange-yellow crystals and SrBeF4 as colourless crystals while heating mixtures of SmF3, Sm-powder, BeF2 (2 : 1 : 3) and SrF2 and BeF2 (1 : 1), respectively, under Ar after 7-10 d at about 700°C. SmBeF4 crystallizes in Pna21 (No. 33) with a = 846.1(5), b = 676.9(5), c = 524.1(4) pm and SrBeF4 in P21/n (Nr. 14) with a = 529.5(5), b = 830.9(2), c = 678.8(4) pm and β = 90.0°.The structures of SmBeF4 and the room temperature modification of SrBeF4 are related to the baryt type structure. The differences to the structure BaSO4 are mutual rotations of the BeF4 tetrahedra and their shift with respect to the Sm and Sr framework, respectively. According to the refinement of the structure of SmBeF4 at -174°C these effects are enhanced at low temperatures. SmBeF4 exhibits sharp luminescence lines at around 690nm. Measurements of the magnetic susceptibility show the temperature dependence typically found for Sm2+. The Madelung parts of the lattice energy for SmBeF4 und SrBeF4 have been calculated and discussed.
    Notes: Orangegelbe Kristalle von SmBeF4 und farblose Kristalle von SrBeF4 wurden durch Erhitzen entsprechender Gemenge von SmF3, Sm-Pulver, BeF2 (2 : 1 : 3) bzw. SrF2 und BeF2 (1 : 1) unter Ar nach 7-10 d bei ca. 700°C erhalten. SmBeF4 kristallisiert in Pna21 (Nr. 33) mit a = 846,1(5), b = 676,9(5), c = 524,1(4) pm und SrBeF4 in P21/n (Nr. 14) mit a = 529,5(5), b = 830,9(2), c = 678,8(4) pm und β = 90,0°.Die Strukturen von SmBeF4 und der Raumtemperaturmodifikation von SrBeF4 sind mit dem Baryttyp verwandt. Die Unterschiede zur Barytstruktur bestehen in gegenseitigen Verdrehungen der BeF4-Tetraeder und deren Verschiebung gegenüber dem Sm- bzw. Sr-Teilgerüst. Die Bestimmung der Tieftemperaturstruktur von SmBeF4 (-174°C) zeigt eine Verstärkung die ser Effekte. SmBeF4 zeigt die für Sm2+ charakteristischen intensiven Lumineszenzbanden bei etwa 690 nm sowie eine für Sm2+ typische Temperaturabhängigkeit der magnetischen Suszeptibilität. Die Madelunganteile der Gitterenergie für SmBeF4 und SrBeF4 wurden berechnet und diskutiert.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966220126
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  • 10
    Electronic Resource
    Electronic Resource
    Na3Al2Nb34O64 und Na (Si, Nb) Nb10O19: Clusterverbindungen mit isolierten Nb6-OktaedernProfessor Rudolf Hoppe zum 65. Geburtstage am 29. Oktober 1987 gewidmet (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 553 (1987), S. 106-122 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Na3Al2Nb34O64 and Na (Si, Nb) Nb10O19. Cluster Compounds with Isolated Nb6-OctahedraHexagonal ormolu coloured plates of the new compounds Na3Al2Nb34O64 (I) and Na(Si, Nb)Nb10O19 (II) were prepared by heating pellets of NaF, Al2O3, NbO2 and NbO (3:1:8:2) and NaF, NbO2 and NbO (1:4:2), respectively, at approx. 850°C. I was contained in a sealed gold capsule, II in a silica tube. The Si incorporated in II originates from the container material. Both compounds crystallize in R 3, I with a = 784.4(1), c = 7065(1) pm, Z = 3 and II with a = 784.1(1), c = 4221.8(5) pm, Z = 6. I and II represent new structure types. They contain the same characteristic structural units, namely discrete Nb6O12 clusters (dNb-Nb = 283 ± 4 pm) and Nb2O10 units with Nb-Nb dumbells (dNb-Nb ≍ 269 pm) in edgesharing coordination octahedra. In addition NbO6 octahedra containing Nb in the oxidation state + 5 and NaO12 cube-octahedra occur in both compounds besides AlO4 and SiO4 tetrahedra in I and II, respectively. The structures can be described in terms of a common closepacking of O and Na atoms together with Nb6 octahedra.
    Notes: Hexagonale, altgoldfarbene PlättChen der neuen Verbindungen Na3Al2Nb34O64 (I) bzw. Na(Si, Nb) Nb10O19 (II) wurden durch Erhitzen von zu Pillen gepreßten Gemengen aus NaF, Al2O3, NbO2 und NbO (3:1:8:2) bzw. NaF, NbO2 und NbO (1:4:2) bei etwa 850°C dargestellt. I war in einem geschlossenen Au-Rohr, II in einer Quarzampulle eingeschlossen; das in II eingebaute Si stammt aus der Gefäßwand. Beide Verbindungen kristallisieren in R 3, I mit a = 784,4(1), c = 7065(1) pm und Z = 3, II mit a = 784,1(1), c = 4221,8(5) pm und Z = 6.I und II bilden jeweils einen neuen Strukturtyp. Beide enthalten als charakteristische Baugruppen diskrete Nb6O12-Cluster (dNb-Nb = 283 ± 4pm) sowie Nb2O10-Einheiten mit Nb-Nb-Paaren (dNb-Nb ≍ 269 pm) und kantenverknüpften Koordinationsoktaedern. Ferner liegen NbO6-Oktaeder mit Nb in der Oxidationsstufe + 5, und NaO12-Kuboktaeder sowie in I AlO4-bzw. in II SiO4-Tetraeder vor. Die Strukturen lassen sich mit gemeinsam dichten Packungen von O-Atomen, Na-Atomen und Nb6-Oktaedern beschreiben.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875531013
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