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  • 1980-1984  (18)
  • 1965-1969  (21)
  • 1
    Electronic Resource
    Electronic Resource
    Observation of the solar soft X-ray component; study of its relation to transient and slowly-varying phenomena observed at other wavelengths (1969)
    Springer
    Solar physics 6 (1969), S. 193-204 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Solar X-rays from 8–12 Å have been observed with an ion chamber photometer and fluxes derived from the observations after an assumption concerning the spectral distribution. The time variation of the X-ray flux correlates well with the radio flux, plage index, and sunspot number. Comparisons of X-ray and optical events are given; flares seem to produce soft X-rays, but some soft X-ray bursts are apparently not associated with flares. The total energy involved in the soft X-ray bursts may be a significant amount of the total flare radiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00150944
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  • 2
    Electronic Resource
    Electronic Resource
    Characterististics of plage fragments with photospheric network properties (1980)
    Springer
    Solar physics 67 (1980), S. 23-28 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using data taken with the multi-channel magnetograph at KPNO, we demonstrate that plage regions surrounding a sunspot have thermal properties found in the photospheric network. These network-like regions existed up to the edge of the penumbra of the sunspot. Temperature gradients inferred from equivalent width fluctuations in our data do not conflict with the requirements of the theory (Parker, 1978) for flux tubes to exist at subphotospheric levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00146679
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  • 3
    Electronic Resource
    Electronic Resource
    Solar soft X-rays and solar activity (1969)
    Springer
    Solar physics 8 (1969), S. 348-368 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Soft solar X-rays (8 ⩽ gl ⩽ 12 Å) were observed from OSO-III. An analysis of the X-ray enhancements associated with 165 solar flares revealed that there is a tendency for a weak soft X-ray enhancement to precede the cm-λ burst and Hα flare. The peak soft X-ray flux follows the cm-λ peak by about 4 min, on the average. Additionally, it was found that flare-rich active centers tend to produce flares which are stronger X-ray and cm-λ emitters than are flares which take place in flare-poor active centers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00155382
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  • 4
    Electronic Resource
    Electronic Resource
    Kontinuierliche Analyse inbesondere von Spurenkonzentrationen oxydierender und reduzierender Stoffe in Flüssigkeiten und Gasen mit Hilfe potentiostatischer Meßanordnungen (1966)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 216 (1966), S. 285-286 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00515410
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Kenntnis von BaCdGeS4 mit einem Beitrag|zur|Kristallchemie von Verbindungen des Typs BaABS4 (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 468 (1980), S. 27-34 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On BaCdGeS4 and the Crystal Chemistry of the BaABS4-Type CompoundsBaCdGeS4 was prepared for the first time and investigated by using X-ray methods. It crystallizes isotypically with BaCdSnS4 [1]. Space group C2v19-Fdd2 (No. 43). Lattice constants: a = 2169, b = 2125, c = 1278 pm. The structure is formed by the characteristically linked edge sharing “double-tetrahedrons”. The topological linkage of the tetrahedrons is compared with other related structures and discussed in respect of the nature of the metal-sulfur bond.
    Notes: BaCdGeS4 wurde erstmals dargestellt und röntgenographisch untersucht. Es kristallisiert isotyp mit BaCdSnS4 [1] in der Raumgruppe C2v19-Fdd2 (Nr. 43). Gitterkonstanten: a = 2169, b = 2125, c = 1278 pm. Die charakteristisch verknüpften „Doppeltetraeder“ mit gemeinsamen Kanten bilden das strukturbestimmende Tetraedergerüst. Die topologische Verknüpfung d er Tetraeder wird mit verwandten Strukturen verglichen und in bezug auf den Bindungscharakter der Metall-Schwefel-Bindung diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804680104
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  • 6
    Electronic Resource
    Electronic Resource
    Die Rolle der Schwefel-Verbindungen in der LuftreinhaltungKurzfassung des Plenar-Vortrages auf dem Jahrestreffen der Verfahrens-Ingenieure, 1. bis 3. Oktober 1968 in Stuttgart. (1969)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 41 (1969), S. 599-600 
    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.330411003
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  • 7
    Electronic Resource
    Electronic Resource
    Über Erdalkalimetall-Oxocuprate. I. Zur Kenntnis von CaCu2O3 (1969)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 370 (1969), S. 134-143 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The hitherto unknown CaCu2O3 was prepared and the structure determined by investigation of single crystal X-ray patterns: Orthorhombic symmetry, space group D2h13-Pmmn eith a = 9.85, b = 4.11 and c = 3.47 Å. Ca2+ has a distorted octahedral neighbourhood, the Cu2+ ion is surrounded by a square of four oxygens. The Cu/O network and its connexion with the Ca/O oktahedrons is discussed.
    Notes: Neu dargestellt wurde CaCu2O3. Die röntgenographische Untersuchung mit Einkristalldaten ergab orthorhombische Symmetrie, Raumgruppe D2h13-Pmmn mit a = 9,85, b = 4,11 und c = 3,47 Å. CaCu2O3 besitzt symmetrisch verzerrte Sauerstoffoktaeder um Ca2+ und fast quadratische Konfigurationen von O2- um Cu2+. Die Verknüpfung zwischen den in Richtung [100] deutlich gefalteten, längs [010] und [100] unendlich ausgedehnten Cu/O-Ebenen mit den Ca/O-Oktaedern wird eingehend diskutiert.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19693700305
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  • 8
    Electronic Resource
    Electronic Resource
    Über Erdalkalimetall - Oxocuprate. II. Zur Kenntnis von Sr2CuO3 (1969)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 371 (1969), S. 325-332 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sr2CuO3 was prepared and the structure determined by investigation of single crystal X-ray patterns. It has an orthorhombic symmetry. The space group is D252h - Immm with a = 12,68, b = 3,91 and c = 3,48 Å. Sr2CuO3 shows isolated endless Cu/O-chains with a coplanar neighbourhood of four oxygens around copper and a trigonal oxygen neighbourhood of Sr2+. The systematical connection of the trigonal polygons building up the lattice is discussed.
    Notes: Sr2CuO3 wurde dargestellt und an Einkristallen röntgenorgaphisch untersucht. Es hat orthorhombische Symmetrie, Raumgruppe D252h - Immm, mit a = 12,688, b = 3,91 und c = 3,48 Å. Im Sr2CuO3 gibt es isolierte, eindimensionale unendliche Cu/O. Ketten, in denen das Cu2+-Ion eine quadratische und exakt planare Umegebung von O2--Ionen hat. Ketten entstehen durch die systematische Verknüpfung der trigonalen Sauerstoffprismen um Sr2+. Der Kristallbau wird eingehend diskutiert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19693710515
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Bestimmung der Phasenbreite von ZinkoxidProfessor Hans-Albert Lehmann zum 65. Geburtstage am 1. Mai 1984 gewidmet (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 511 (1984), S. 72-76 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Determination of the Phase Width of Zinc OxideThe homogeneity range of zinc oxide was determined coulometrically by oxydation of non-stoichiometric samples in a gas-solid-phase-reaction using a solid electrolyte cell. Single crystals with the composition according to the lower phase boundary were prepared by chemical transport reaction. The deviation of the lower phase boundary from the stoichiometric composition depends upon the temperature amounting to 30-240 ppm in the region 800-1100°C.
    Notes: Das Homogenitätsgebiet von Zinkoxid wurde durch Oxydation unterstöchiometrischer Proben in einer Gas-Festreaktion mit einer Festelektrolytzelle coulometrisch bestimmt. Die Darstellung der Einkristalle der unteren Phasengrenzzusammensetzung erfolgte durch chemischen Transport. Die Abweichung von der stöchiometrischen Zusammensetzung der unteren Phasengrenze hängt von der Temperatur ab und liegt zwischen 30 und 240 ppm im Bereich von 800-1100°C.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845110408
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  • 10
    Electronic Resource
    Electronic Resource
    Zum Verhalten von Manganoxiden in Kaliumhydroxidschmelzen (1965)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 336 (1965), S. 197-199 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: MnO2 reacts at about 470°C in inert atmosphere with molten KOH yielding by disproportionation K3MnO4 and KMnO2. The latter is obtained in almost pure state from the reaction of MnOOH with KOH at analogous conditions. MnO does not react.
    Notes: MnO2 reagiert in einer KOH-Schmelze bei ∼470° in Inertgasatmosphäre unter weitgehender Dispropotionierung zu K3MnO4 und KMnO4. Letzteres entsteht praktisch ausschließlich bei sonst gleichen Bedingungen aus MnOOH. MnO wird nicht verändert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19653360309
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