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  • Chemistry  (18)
  • LUNAR AND PLANETARY EXPLORATION  (11)
  • Physics  (7)
  • PIC  (2)
  • 1
    facet.materialart.
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    The vespa process for the analysis of seismic signals (1971)
    In:  Nature, Warszawa, Army Corps of Engineers, Woodward-Clyde Consultants, vol. 232, no. 5, pp. 8-13, pp. 1013, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 1971
    Keywords: Seismic networks ; Seismic arrays ; PIC ; ves
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
    facet.materialart.
    Unknown
    Pattern recognition techniques for the interpretation of vespagrams and beamsplit data (1971)
    MIT Lincoln Lab.
    In:  Semiannual Technical Summary Report, Lexington, Mass., MIT Lincoln Lab., vol. 10, no. rapport C 20754-9.1 (2.2), pp. 38-41
    Details
    Publication Date: 1971
    Keywords: Artificial intelligence (AI) ; Pattern recognition ; Detectors ; PIC ; ves ; Seismic networks ; Seismic arrays ; Discrimination ; Data analysis / ~ processing
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
    Electronic Resource
    Electronic Resource
    1H-NMR determination of the thermodynamics of drug complexation with single-stranded and double-stranded oligonucleotides in solution: Ethidium bromide complexation with the deoxytetranucleotides 5′-d(ApCpGpT), 5′-d(ApGpCpT), and 5′-d(TpGpCpA) (1997)
    New York : Wiley-Blackwell
    Biopolymers 42 (1997), S. 285-295 
    Details
    ISSN: 0006-3525
    Keywords: thermodynamic parameters of drug binding ; 1H-nmr of drug binding ; ethidium bromide binding (ΔG, ΔH, ΔS) ; intercalation of ethidium bromide ; oligodeoxynucleotides ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The thermodynamical parameters (free energy, enthalpy, and entropy) of complex formation between ethidium bromide and single-stranded and double-stranded tetranucleotides of different base sequence [5′-d(TpGpCpA), 5′-d(ApCpGpT), and 5′-d(ApGpCpT) have been determined from the temperature dependencies of 500 MHz proton nmr chemical shifts. The analysis enables the contributions to be differentiated for the formation of different types of complexes (1:1, 2:1, 1:2, and 2:2) in aqueous solution. The results have been interpreted in terms of the main types of intermolecular interactions responsible for formation of the different complexes; van der Waals and electrostatic interactions are important for formation of complexes of ethidium bromide with single-stranded tetranucleotides, whereas van der Waals and hydrophobic interactions play a significant role in the binding of the dye to the tetramer duplexes. © 1997 John Wiley & Sons, Inc. Biopoly 42: 285-295, 1997
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 4
    Electronic Resource
    Electronic Resource
    Nitrogen-phosphorous antagonism in flame-retardant cotton (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 31 (1986), S. 1655-1662 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Phosphorous, as sodium dihydrogen phosphate, and nitrogen, in the form of a urea-for-maldehyde condensate, were applied to cotton fabric. The flame-retarding character of each treated fabric was assessed by determining the respective limiting oxygen index. Analysis of the results showed that at the lowest levels of applied phosphorous (P = 2%), the presence of nitrogen produced less than an additive combined flame-retarding effect. At higher phosphorous levels, this deviation from additivity increased until at P 〉 6%, the presence of nitrogen antagonized the flame-retarding effect of the phosphorous. These observations are discussed within the current ideas of nitrogen-phosphorous interaction in flame-retardant systems, for cotton-containing fabrics.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070310611
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  • 5
    Electronic Resource
    Electronic Resource
    Nitrogen-phosphorous antagonism in flame-retardant cotton (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 32 (1986), S. 5691-5691 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1986.070320639
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  • 6
    Electronic Resource
    Electronic Resource
    The electroinitiated polymerization of N-vinylcarbazole with zinc bromide, IIPart I: cf.12.. Kinetics of polymerization (1973)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 169 (1973), S. 177-189 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die elektroinitiierte Polymerisation von N-Vinylcarbazol (VCZ) wurde in Aceton bei 25°C mit Zinkbromid als Katalysator unter Verwendung von Platinelektroden eingehend untersucht. Die Polymerisationsgeschwindigkeit erwies sich als direkt abhängig von der Stromstärke, der Zinkbromid-Konzentration und dem anfänglichen Wassergehalt des Solvens.Die Molekulargewichte der entstandenen Polymeren (1000-6000) sind unabhängig von der Stromstärke, der Zinkbromid-Konzentration und dem Umsetzungsgrad des Monomeren zum Polymeren, werden jedoch beeinflußt durch Wasser, die Monomerkonzentration und das Elektrodenmaterial. Die chemische Zusammensetzung der Polymeren ändert sich nicht mit der Stromstärke, der Zinkbromid-Konzentration, dem Umsetzungsgrad und dem Elektrodenmaterial. Sie ändert sich jedoch ein wenig mit dem Wassergehalt des Acetons.
    Notes: The electroinitiated polymerization of N-vinylcarbazole (VCZ) in acetone solvent at 25°C with zinc bromide, as catalyst, and platinum electrodes was investigated in detail. The polymerization rate was found to be directly dependent on current strength, zinc bromide concentration and the initial water content of the solvent.The molecular weights of the formed polymers (1000-6000) are independent of current strength, zinc bromide concentration and degree of conversion of monomer to polymer, but are affected by water, monomer concentration, and by the type of electrodes used. The chemical composition of the polymer is invariant with current strength, zinc bromide concentration, degree of conversion, and electrode material but does vary slightly with the water content of acetone.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1973.021690117
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  • 7
    Electronic Resource
    Electronic Resource
    1H-NMR structural analysis of ethidium bromide complexation with self-complementary deoxytetranucleotides 5′-d (ApCpGpT), 5′-d (ApGpCpT), and 5′-d (TpGpCpA) in aqueous solution (1996)
    New York : Wiley-Blackwell
    Biopolymers 38 (1996), S. 745-757 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Complexation of the trypanocidal drug, ethidium bromide (EB), and the self-complementary deoxytetraribonucleoside triphosphates, 5′-d(ApCpGpT), 5′-d(ApGpCpT), and 5′-d(TpGpCpA), in aqueous salt solution has been investigated using one-dimensional and two-dimensional 500/600 MHz 1H-nmr spectroscopy. Six hundred megahertz two-dimensional homonuclear 1H-nmr spectroscopy (nuclear Overhauser effect spectroscopy) was used for a qualitative determination of the structures of EB binding with the deoxytetranucleotides. Concentration dependencies of proton chemical shifts of the molecules have been measured at constant temperatures (T = 303 or 308 K). Different successive schemes of complex formation between the dye molecule and the tetranucleotides have been examined by taking into account various molecular associations in solution, viz., 1:1, 1:2, 2:1 and 2:2 complexes. Equilibrium reaction constants and the limiting proton chemical shifts in the complexes have been determined. The relative contributions of different types of complexes in the equilibrium mixture have been determined and special features of the dynamic equilibrium have been revealed by analysis of chemical shifts as a function of both the dye and tetranucleotide concentrations. The present analysis leads to the conclusion that EB binds preferentially to the pyrimidine-purine sites of the tetranucleotide duplexes. The results show that the energy of EB binding depends on the base content in the pyrimidine-purine sites of the tetramers and on the nucleotide residuals flanking the preferential site. The most favorable structures of the 1:2 and 2:2 complexes of the dye with the tetranucleotides have been constructed using calculated values of induced chemical shifts of EB protons in conjunction with intermolecular nuclear Overhauser effects. The structures of the EB:tetranucleotide complexes depend on tetramer base sequence and are characterized by differences in helix parameters. © 1996 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Stability and reactivity of the α-cyclodextrin complexes of 4-methylperbenzoic acid (1996)
    Chichester : Wiley-Blackwell
    Journal of Physical Organic Chemistry 9 (1996), S. 433-435 
    Details
    ISSN: 0894-3230
    Keywords: Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A kinetic study of the α-cyclodextrin-mediated oxidation of methyl 4-nitrophenyl sulphide by 4-methylperbenzoic acid suggests that the stability constant for the cyclodextrin-peracid complex is two orders of magnitude greater than the value determined previously. Potentiometric studies confirmed this and showed that the 4-methylperbenzoate anion forms a complex of stability similar to that of the molecular acid. A less stable 2:1 cyclodextrin-4-methylperbenzoic acid complex is also observed.
    Additional Material: 4 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    The measurement of clonidine in human plasma and urine by combined gas chromatography mass spectrometry with ammonia chemical ionization (1981)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 8 (1981), S. 500-502 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The dimethyl derivatives of clonidine and [2H4]clonidine give good chemical ionization mass spectra when ammonia is used as reagent gas. A gas chromatographic mass spectrometric selected ion monitoring assay for the estimation of clonidine in plasma and urine using ammonia chemical ionization is described.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200081007
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  • 10
    Electronic Resource
    Electronic Resource
    Letter to the editors (1980)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 7 (1980), S. 183-183 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200070410
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