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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Manuscripta mathematica 5 (1971), S. 133-145 
    ISSN: 1432-1785
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper we derive the integraltransformations and their corresponding inversionformulas, belonging to every singular S-hermitian boundary-value problem for ordinary differential systems. The well known classical results (e. g. [2], [1]) for selfadjoint ordinary differential equations are included.
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    The journal of membrane biology 9 (1972), S. 127-140 
    ISSN: 1432-1424
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Summary Adsorption isotherms of water on human red cell membranes have been measured and the results used to determine the Brunauer-Emmett-Teller monolayer coverage, saturation hydration, and relevant heats and entropies of hydration. The tightly bound monolayer corresponds to a complete covering of only one membrane surface and the saturation hydration is greater than values for globular proteins and phospholipids. A hysteresis loop is observed in the adsorption-desorption cycle. Circular dichroism spectra of membrane films have been measured as a function of hydration in the ultraviolet region of the spectrum. The spectra resemble those of membrane suspensions with reduced scattering. The circular dichroism did not change upon dehydration of the membrane films from 92 to 0% relative humidities, implying a stable membrane protein structure independent of both water content and lipid phase.
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 8 (1972), S. 0 
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: The effects of major water management practices on the pumping requirement from the Ogallala aquifer are discussed. Demand on the aquifer may be reduced as much as 15 percent by recycling irrigation runoff, 25 percent by recycling irrigation runoff and irrigating with water from playas, and 29 percent by recycling irrigation water in combination with irrigation from playas and artificial recharge of playa water to the aquifer. Other practices that can result in more efficient use of precipitation and groundwater are limited irrigation, land forming, soil profile modification, and improved irrigation systems, thereby reducing the pumping demand on the Ogallala. Additional water supplies can possibly be obtained by water harvesting, weather modification, and water importation. Conclusions reached were that the overdraft on the aquifer can be reduced by the application of sound water management practices on an area-wide basis.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Archiv der Mathematik 25 (1974), S. 167-171 
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 102 (1971), S. 1337-1339 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Schmelzenthalpien einiger Verbindungen von Alkalichloriden mit Lanthanidchloriden wurden in einer orientierenden Versuchsreihe kalorimetrisch bestimmt. Aus den gemessenen Werten läßt sich die Existenz einer stabilen komplexen SpeciesLnCl6 3− in der Schmelze folgern.
    Notes: Abstract The enthalpies were determined in a drop-calorimeter. An analysis of the enthalpy values confirmed the existence of the complex speciesLnCl6 3− in the melt.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 372 (1970), S. 314-324 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The enthalpies of melting of GaSb, InSb, InBi, Bi2Tl, SnAs, GeAs, GeAs2 Bi2Se3, Sb2Se3, As2Se3 were determined in a drop-calorimeter. The experimental values lead to the conclusion, that by their behaviour on melting one may define three types of melting in these compounds. 1Transition of an ordered crystal with covalent bonds to a metallic melt with statistical distribution of atoms.2Transition of a crystal with layer or chain structure to a melt with molecule formation and a high degree of short-range order.3Transition of an ordered metal-crystal to a melt with metallic character and statistical distribution of atoms.These different types were confirmed by the different dependence of the enthalpy of melting from the width of the forbidden gap.
    Notes: Aus den „drop-calorimetrisch“ bestimmten Schmelzenthalpien und den daraus berechneten Schmelzentropien von GaSb, InSb, InBi, Bi2Tl, SnAs, GeAs, GeAs2, Bi2Se3, As2Te3 und As2Se3 lassen sich drei Klassen von Schmelzvorgängen ableiten: 1Der Übergang von einem geordneten Festkörper mit kovalenten Bindungen in eine Schmelze mit metallischem Charakter und statistischer Verteilung der Atome.2Der Übergang von einem Festkörper mit Schicht- bzw. Kettenstruktur in eine Schmelze mit molekülähnlichen Nahordnungszuständen.3Der Übergang von einem geordneten Festkörper mit vorwiegend metallischem Charakter in eine metallische Schmelze mit statistischer Verteilung der Atome.Diese Einteilung wird durch die unterschiedliche Abhängigkeit der Schmelzenthalpien von der Breite der verbotenen Zone bekräftigt.
    Additional Material: 7 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 386 (1971), S. 38-46 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 21 phase diagrams of the binary systems RJ3—MeJ (R = La, Pr, Nd, Sm. Gd, Dy, Er; Me = Na, K, Cs) have been investigated by means of a differential thermal analysis method.
    Notes: Es werden 21 Zustandsdiagramme der Systeme SEJ3—MeJ (SE = La, Pr, Nd, Sm, Gd, Dy, Er; Me = Na, K, Cs) differentialthermoanalytisch untersucht.
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  • 8
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Specific electrical conductivities and activation energies of the molten binary systems RJ3-MeJ (R = La, Nd, Gd, Dy; Me = Na; K, Cs) have been investigated. In the mixtures with Me = K, Cs there are clear indications to species like RJ63-, RJ52- or R2J93-.
    Notes: Es werden die spezifischen elektrischen Leitfähigkeiten und die Aktivierungsenergien in den Systemen SEJ3-MeJ (SE = La. Nd, Gd, Dy; Me = Ma, K, Cs) im geschmolzenen Zustand untersucht. In den Gemischen mit Me = K, Cs findet man deutliche Hinweise auf die Existenz komplexer Spezies der Form SEJ63-, SEJ52- bzw. SE2J93-.
    Additional Material: 7 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 373 (1970), S. 133-147 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The partial pressures of alkali chloride and magnesium chloride have been determined over molten mixtures with rare earth chloride in the systems CsCl—NdCl3, CsCl—SmCl3, KCl—NdCl3, LiCl—NdCl3, MgCl2—NdCl3. The experimental results were used to calculate the activities of the components and the integral free enthalpy of mixing. The negative deviations from ideal behaviour increase in the series MgCl2, LiCl, KCl, CsCl. The qualitative composition of the vapour phase was analyzed by a mass-spectrometer.
    Notes: Es wurden die Partialdrucke der Alkalichloride und des Magnesiumchlorids über geschmolzenen Mischungen mit Seltenerdchloriden in folgenden Systemen bestimmt: CsCl—NdCl3, CsCl—SmCl3, KCl—NdCl3, LiCl—NdCl3, MgCl2—NdCl3. Aus den Meßergebnissen wurden die Aktivitäten, Aktivitätskoeffizienten und integralen freien Mischungsenthalpien berechnet. Die Abweichungen vom idealen Verhalten werden in der Reihenfolge MgCl2, LiCl, KCl, CsCl zunehmend negativ. Massenspektrometrische Untersuchungen gaben Hinweise hinsichtlich der qualitativen Zusammensetzung der Gasphase.
    Additional Material: 7 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 388 (1972), S. 97-104 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Molvolume measurements of homogenous melts of the systems NdCl3-CsCl and GdCl3-NaCl, -KCl, -CsCl result in isotherms, which characteristics may be explained by the assumption of complex species in the melt. This interpretation will be discussed in connection with the phase diagrams. The accuracy of the described measuring device is demonstrated. Furthermore, the density of molten GdCl3 and controlling measurements of the systems KCl-KBr as well as NaCl-RbCl are described.
    Notes: Messungen der Molvolumina an homogenen Schmelzen von Neodymchlorid mit Cäsiumchlorid und von Gadoliniumchlorid mit Natrium-, Kalium- und Cäsiumchlorid ergeben Isothermen, deren Verlauf durch die Annahme komplexer Spezies in den Schmelzen gedeutet werden kann. Diese Interpretation wird im Zusammenhang mit den Zustandsdiagrammen diskutiert. Die Genauigkeit der beschriebenen Meßanordnung wird demonstriert. Weiterhin werden die Dichten von geschmolzenem Gadoliniumchlorid und Kontrollmessungen an den Systemen Kaliumchlorid-Kaliumbromid sowie Natriumchlorid-Rubidiumchlorid mitgeteilt.
    Additional Material: 7 Ill.
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