ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Mediated reduction of oxygen at poly(phenosafranine) modified electrodes (2000)
    Springer
    Journal of applied electrochemistry 30 (2000), S. 757-760 
    Details
    ISSN: 1572-8838
    Keywords: oxygen reduction ; poly(phenosafranine) ; zeolite-L
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004080319334
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Characterisation of different grades of commercially pure aluminium as prospective galvanic anodes in saline and alkaline battery electrolyte (1989)
    Springer
    Journal of applied electrochemistry 19 (1989), S. 547-551 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The effect of calcium chloride and sodium chloride on the electrochemical properties of various grades of aluminium namely 2s, 3s, 26s and 57s in alkaline citrate solution has been examined by studying the self corrosion, open circuit potential, anodic polarization and anode efficiency. It has been found that among the different grades of aluminium the 57s grade is found to be the most promising galvanic anode material in the 4N NaOH containing 20% wt/vol. of sodium citrate and 2.5% wt/vol. of CaCl2·2H2O. Further, it has been found that the above alkaline citrate electrolyte required for aluminium air batteries can be prepared from tap water, saline water and even sea water. The presence of chloride ions in the electrolyte, even up to a concentration of 2.5% wt/vol. as CaCl2·2H2O, is not found to alter the electrochemical properties of the different grades of aluminium as anode materials, though 57s is found to be the best.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01022112
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    On the substituent effects of halogens in aromatic substitutions (1979)
    Springer
    Monatshefte für Chemie 110 (1979), S. 647-655 
    Details
    ISSN: 1434-4475
    Keywords: Aromatic substitution ; Bromination, kinetics ; Kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bromierung von 4-Bromphenol mit Br2 in Essigsäure wurde untersucht. Außerdem wurden dieArrhenius-Aktivierungs-Energien für die Bromierung von vierp-substituierten PhenolenRC6H4OH (R=CH3, F, Cl und Br) genau bestimmt. Die beobachteten Substituenten-Effekte werden diskutiert und interpretiert.
    Notes: Abstract The general kinetic features of the bromination of 4-bromophenol by molecular bromine in acetic acid medium has been studied andArrhenius activation energies for the bromination of fourpara substituted phenols of the general formulaRC6H4OH (R=CH3, F, Cl, and Br) have been accurately determined. These values, which indicate an anomalous order in substituent effect of halogens, are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00938368
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Kinetics and mechanism of the addition of iodine monochloride to some alkenes in nitrobenzene solvent. Effect of polarity of the solvent (1984)
    Springer
    Monatshefte für Chemie 115 (1984), S. 35-43 
    Details
    ISSN: 1434-4475
    Keywords: Iodine monochloride ; Kinetics ; Solvent effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Kinetik der Addition von ICl zu einigen Vinylverbindungen in Nitrobenzol als Lösungsmittel wurde untersucht. In allen Fällen ist die Reaktion von zweiter Ordnung hinsichtlich ICl und von erster Ordnung hinsichtlich des Substrats, d. h. mit einer Gesamtordnung von drei. Geschwindigkeitskonstanten wurden für jedes Substrat bei 20°, 30°, 40° und 50°C gemessen. AusArrhenius-Diagrammen wurden Aktivierungsenergien ermittelt und auch andere kinetische und thermodynamische Parameter wurden bestimmt. Ein Mechanismus wird vorgeschlagen, wobei die verschiedenen Parameter diskutiert werden. Lösungsmitteleffekte werden ebenfalls diskutiert und die Daten mit Nitrobenzol und Essigsäure als Lösungsmittel miteinander verglichen.
    Notes: Abstract The kinetics of the addition of iodine monochloride (ICl) to some vinyl compounds in nitrobenzene solvent was investigated. In all cases the reaction follows second order dependence on ICl and first order on the substrate, making the total order three. Rate constants were measured for each substrate at 20°, 30°, 40° and 50°C.Arrhenius plots were made from which activation energies were evaluated. Other kinetic and thermodynamic parameters are reported. A suitable mechanism is proposed for the reaction and based on this, the various parameters are discussed. Solvent effects are discussed and the data with nitrobenzene and acetic acid solvents are compared.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798419
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Der Ramaneffekt einiger Aminoverbindungen (1931)
    Springer
    The European physical journal 70 (1931), S. 131-139 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Die Arbeit stellt eine Untersuchung der Ramanspektren der folgenden aromatischen Aminoverbindungen dar: Monomethyl-, Dimethyl- und Diäthylanilin, Ortho-, Para- und Metatoluidin und -Xylidin (1, 3, 5). Die Frequenzverschiebung 1604 tritt in allen diesen Stoffen auf, aber mit größerem Intensität als im Benzol. Die Benzolverschiebung 991 ist sehr stark in den Mono- und Dialkylanilinen, schwach in den Toluidinen und fehlt in dem symmetrisch gebauten Xylidin. Entsprechend treten die aliphatische und aromatische C-H-Verschiebung 2960 bzw. 3060 im Xylidin nicht deutlich auf. Daß die Verschiebung 3432 (2,91) nur beim Monoalkylanilin und nicht in den Dialkylanilinen auftritt, zeigt, daß diese Frequenz der N-H-Bindung zuzuschreiben ist. Die ultrarote Absorptionsbande 11,31μ fehlt bei allen Stoffen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01391036
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    An investigation on spacing of cracks and maximum crackwidth in reinforced concrete flexural members (1985)
    Springer
    Materials and structures 18 (1985), S. 123-133 
    Details
    ISSN: 1359-5997
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Description / Table of Contents: Résumé On propose une méthode de détermination de l'espacement des fissures et de leur largeur maximale dans des éléments de béton armé travaillant en flexion. On détermine les constantes de la méthode proposée à partir d'une analyse statistique des résultats d'essai de Hognestad, Clark et Baseet al. On compare les valeurs expérimentales de largeur des fissures d'après les équations fournies par CP 110, le Code Modèle, Gergely et Lutz, on discute la méthode proposée et les résultats.
    Notes: Abstract A method is proposed to determine the crack spacing and maximum crackwidth in reinforced concrete flexural members. The constants appearing in the proposed method are determined from a statistical analysis of the the test results of Hognestad, Clark and Baseet al. Experimental crackwidth values are compared with the crackwidth values computed from the equations given by CP110, Model Code, Gergely and Lutz and the proposed method and the results are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02473379
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Surface morphology of ion-irradiated Fe films (1998)
    Springer
    Applied physics 66 (1998), S. 1137-1139 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 61.16.P; 34.50.H; 79.20.N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051313
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Growth and characterization of oriented cadmium sulphide nanocrystals under Langmuir-Blodgett monolayer of arachidic acid (1999)
    Springer
    Applied physics 69 (1999), S. 385-388 
    Details
    ISSN: 1432-0630
    Keywords: PACS: 68.18.+p; 78.66.Jg; 78.30.Fs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Cadmium sulphide nanocrystals were grown at room temperature (20 °C) under arachidic acid monolayers floating over an aqueous solution of CdCl2 inside an enclosed Langmuir-Blodgett set-up, through slow infusion of H2S gas. X-ray diffraction spectra suggest an oriented growth of the crystallites. The particle sizes were found to increase with duration of exposure to the H2S gas. Atomic force microscopy indicated that the particles were nearly circular pellets with uniform morphology throughout. In Raman spectra, the FWHM of the LO phonon was found to be large (≈20 cm-1) for all the films grown with different exposure times in H2S gas, and was found to reduce to 8 cm-1 after annealing a typical sample at 500 °C for 45 min.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003390051019
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Stability of stochastic Leipholz column with stochastic loading (1992)
    Springer
    Archive of applied mechanics 62 (1992), S. 363-375 
    Details
    ISSN: 1432-0681
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Übersicht Behandelt wird der Leipholz-Stab, dessen Elastizitätsmodul, Masseverteilung und tangential folgende Streckenlast stochastisch sind. Die nicht selbstadjungierte Differentialgleichung und die Randbedingungen werden als solche mit Zufallskoeffizienten betrachtet und die übliche Störungsmethode benutzt. Im Regularitätsbereich werden die nicht selbstadjungierten Operatoren benutzt. Hergeleitet wird die vollständige Kovarianz-Struktur der Eigenwerte der freien Schwingung und kritischen Lasten als Funktionen der Eigenschaften zweiter Ordnung der zufälligen Eingangsgrößen, die die Schwankungen der Systemparameter charakterisieren. Der Mittelwert der kritischen Last wird aus dem gemittelten Problem berechnet und die zugehörige Eigenwert-Statistik wird gesucht. Über die Frequenzgleichung wird eine Transformation vorgenommen, um die Statistik des Lastparameters zu erhalten. Eine numerische Studie illustriert die Leistungsfähigkeit der hergeleiteten Ausdrücke.
    Notes: Summary The Leipholz column which is having the Young modulus and mass per unit length as stochastic processes and also the distributed tangential follower load behaving stochastically is considered. The non self-adjoint differential equation and boundary conditions are considered to have random field coefficients. The standard perturbation method is employed. The non self-adjoint operators are used within the regularity domain. Full covariance structure of the free vibration eigenvalues and critical loads is derived in terms of second order properties of input random fields characterizing the system parameter fluctuations. The mean value of critical load is calculated using the averaged problem and the corresponding eigenvalue statistics are sought. Through the frequency equation a transformation is done to yield load parameter statistics. A numerical study incorporating commonly observed correlation models is reported which illustrates the full potentials of the derived expressions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00804597
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    P-amenable locally compact groups (1986)
    Springer
    Monatshefte für Mathematik 101 (1986), S. 301-308 
    Details
    ISSN: 1436-5081
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract LetG denote a locally compact group andP(G) [P c (G)] the topological semigroup of absolutely continuous [absolutely continuous and compactly supported] probability measures onG. We say thatG isP-amenable [P c -amenable] if the topological semigroupP(G)[P c (G)] is amenable. Some combinatorial properties of this class of groups are studied. The relationship between amenability andP-amenability ofG is investigated. It is shown that for a connected solvableP c -amenable groupG, G has polynomial growth if, and only if,P c (S)={f∈P c (G)‖suppf⊂S} is amenable for any open subsemigroupS ofG.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01559393
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...