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  • Inorganic Chemistry  (269)
  • SOLAR PHYSICS  (168)
  • SPACECRAFT DESIGN, TESTING AND PERFORMANCE  (130)
  • 1975-1979  (434)
  • 1910-1914  (133)
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  • 1
    Publication Date: 2019-07-13
    Description: The recent direct observational evidence for the acceleration of particles in solar flares, i.e. radio emission, bremsstrahlung X-ray emission, gamma-ray line and continuum emission, as well as direct observations of energetic electrons and ions, are discussed and intercorrelated. At least two distinct phases of acceleration of solar particles exist that can be distinguished in terms of temporal behavior, type and energy of particles accelerated and the acceleration mechanism. Bulk energization seems the likely acceleration mechanism for the first phase while Fermi mechanism is a viable candidate for the second one.
    Keywords: SOLAR PHYSICS
    Type: NASA-TM-79660 , Jan 01, 1976 - Dec 31, 1977; Boulder, CO; United States
    Format: application/pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 73 (1911), S. 173-199 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 69 (1910), S. 22-37 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wurde das Existenzgebiet von wässerigen Kupferjodidlösungen untersucht und der Einfluß der Temperatur bestimmt.
    Additional Material: 4 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 80 (1913), S. 113-154 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 82 (1913), S. 341-352 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 85 (1914), S. 247-260 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 86 (1914), S. 325-337 
    ISSN: 0863-1778
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Elektrolyse von Bariumchloridlösungen mit Quecksilberkathode ist es am zweckmäßigsten, nach dem Schema von KELLNERSOLVAY zu arbeiten; die Zerlegung des Amalgams ist unter Erwärmen, z. B. auf 60° durchzuführen. Die so erhaltene Lösung scheidet beim Abkühlen auf Zimmertemperatur direkt Barytkristalle ab.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 411 (1975), S. 163-172 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Darstellung und Kristallchemie der ternären Silicate und Germanate mit Alkali (Na+, K+)- und Erdalkali (Ca2+, Sr2+, Ba2+)-KationenDie Darstellung von neuen ternären Silicat- und Germanat-Phasen mit großen Alkali- und Erdalkalikationen wird beschrieben. Sie wurden durch Festkörperreaktion von Mischungen der Carbonate bzw. Oxalate mit SiO2 bzw. GeO2 oder durch Schmelzen und anschließende Rekristallisation des Glases erhalten.Vertreter der kubischen M4+M2+X3O9-Familie sind Na4CaSi3O9 und die isostrukturellen Verbindungen K4CaGe3O9, K4SrGe3O9, K4CaSi3O9 und K4SrSi3O9. K4BaSi3O9 ist pseudokubisch; die Symmetrie des Na4SrSi3O9 ist unbekannt. Zur rhomboedrischen M8+M2+X10O25-Familie gehören K8CaSi10O25, K8SrSi10O25 und K8BaSi10O25.Na2CaGe2O6 und Na2SrGe2O6 sind isostrukturell, aber strukturell nicht mit Na2BaSi2O6 verwandt. Na2Ba2Ge2O7 und Na2Ba2Si2O7 sind strukturell ähnlich.
    Notes: The synthesis of new ternary silicate and germanate phases containing large alkali and alkaline-earth cations is described. They are made by solid-state reaction of mixtures of carbonates or oxalates with SiO2 or GeO2, or by fusion and subsequent recrystallization of the glass.Representatives of the cubic M4+M2+X3O9 family include Na4CaSi3O9 and the isostructural compounds K4CaGe3O9, K4SrGe3O9 and K4SrSi3O9. K4BaSi3O9 is pseudocubic: the symmetry of Na4SrSi3O9 is unknown. The rhombohedral M8+M2+X10O25 family includes K8CaSi10O25, K8SrSi10O25 and K8BaSi10O25.Na2CaGe2O6 and Na2SrGe2O6 are isostructural but both are structurally unrelated to Na2BaSi2O6. Na2Ba2Ge2O7 and Na2Ba2Si2O7 are structurally similar.
    Additional Material: 2 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 423 (1976), S. 173-179 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Untersuchungen an MM″ (NCS)4-Komplexen (M = NiII, FeII, ZnII; M″ = HgII, ZnII)Komplexe des Typs MM′(NCS)4 · xL M = NiII, FeII, ZnII; M″ = HgII, ZnII; x = 2, 4, 6; L = Nicotinamid (nia), Isonicotinsaiurehydroxid (inh) 2-Aminopyrimidin (2apm)] wurden dargestellt und charakterisiert durch Elementaranalyse, molare Leitfähigkeit, magnetisches Moment, IR- und Elektronenspektren.
    Notes: Coordination complexes of the type MM″(NCS)4 · xL M = Ni(II), Fe(II), Zn(II), M″ = Hg(II), Zn(II), x = 2, 4, 6 and L = nicotinamide (nia), 3-cyanopyridine (3-cpy), 4-cyanopyridine (4cpy), 4-aminopyridine (4apy), isonicotinic acid hydrazide (inh), 2-aminopyrimidine (2apm)l have been prepared and characterized by elemental analysis, molar conductance, magnetic moment, infrared and electronic spectral studies. Molar conductance data of NiZn(NCS), complexes are equivalent to 1:1 electrolyte. The infrared spectral studies indicate that only bridged thiocyanate groups are present in the complexes of the type NiHg(SCN)4 · 4L [L=3 and 4cpy, inh] and FeHg(SCN)4 · 2L [L = nia, 2apm], whereas both bridged and terminal thiocyanates are present in the complexes of the type NiHg(SCN)4 · 4L [L = nia, 3apy and ZnHg(SCN)4 · 2(inh). BOHR magneton values and electronic spectral data indicate an octahedral environment around nickel and iron in their complexes. Symmetry and group theory have also been used to establish the structure of the complexes.
    Additional Material: 2 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 449 (1979), S. 25-40 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vanadiumoxid Monoschichtkatalysatoren. I. Darstellung, Charakterisierung und thermische StabilitätDurch Chemisorption von Vanadat(V)-Anionen aus wäßrigen Lösungen, bzw. Chemisorption von gasförmigem V2O3(OH)4 wurden Vanadinoxidkatalysatoren des Monoschichttyps dargestellt. Mit Al2O3, Cr2O3, TiO2, CeO2, und ZrO2 als Trägeroxiden, können Katalysatoren mit einer ungefähr vollständigen monomolekularen Schicht von Vanadin(V)-Oxid auf den Trägeroxiden dargestellt werden, falls die Temperatur nicht zu hoch ist. Zweiwertige Metalloxide wie z. B. CdO und ZnO können schon bei niedriger Temperatur dreidimensionale Oberflächenvanadate bilden.Die thermische Stabilität eines Monoschichtkatalysators ist verbunden mit dem Parameter z/a: dem Quotient der Ladung des Trägerkations und der Summe der Ionenradien von Trägerkation und Oxidanion. Monoschichten werden thermisch nur stabil sein, falls z/a nicht zu groß (aggregierter Katalysator) und nicht zu klein (Bildung einer ternären Verbindung) ist.
    Notes: Vanadium oxide catalysts of the monolayer type have been prepared by means of chemisorption of vanadate(V)-anions from aqueous solutions and by chemisorption of gaseous V2O3(OH)4. Using Al2O3, Cr2O3, TiO2, CeO2 and ZrO2, catalysts with an approximately complete monomolecular layer of vanadium(V) oxide on the carrier oxides can be prepared, if temperature is not too high. Divalent metal oxides like CdO and ZnO may already form threedimensional surface vanadates at moderate temperature.The thermal stability of a monolayer catalyst is related to the parameter z/a, i. e. the ratio of the carrier cation charge to the sum of ionic radii of carrier cation and oxide anion. Thus, monolayer catalysts will be thermally stable only under the condition that z/a is not too high (aggregated catalyst) nor too small (ternary compound formation).
    Additional Material: 8 Ill.
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