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  • 1980-1984  (7)
  • 1
    Electronic Resource
    Electronic Resource
    Fermentation and Post-Fermentation Changes in Israeli Wines (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 49 (1984), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Grape juices (V. vinifera) from vineyards at three locations in Israel were analyzed for carbon, hydrogen and nitrogen contents, metals, amino acids and glycerol, various stages of fermentation and post-fermentation. The contents varied with respect to the type of grape, area, year of collection and methods of vinification. The glycerol content of wine appears to be related to the duration of fermentation. Correlation analysis reveal relationships between the tartaric acid and calcium contents. A certain correlation is also found with the duration of fermentation. For the purpose of wine characterization and study of changes resulting from technological processes, the variation of chemical composition may serve as useful parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1984.tb13720.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Philantropic motives and contribution policy: A note (1984)
    Springer
    Public choice 44 (1984), S. 501-505 
    Details
    ISSN: 1573-7101
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract This note analyzes the results of Ben-Zion and Spiegel regarding different forms of transfer from rich persons to poor ones. Assuming a more general utility function, not necessarily additive or homothetic, this note shows that a combined policy of income transfer with specific subsidy to the poor consumer can lead to an optimal solution (first best) from the donor's point of view. If it is not possible to differentiate between consumers, a system of subsidy to all consumers can achieve a second best solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00119696
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  • 3
    Electronic Resource
    Electronic Resource
    Endogenous ouabain-like compound increases heart muscle contractility (1984)
    [s.l.] : Nature Publishing Group
    Nature 307 (1984), S. 369-371 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The toad skin OLC was extracted from 50 g of back and abdominal toad skin (Bufo viridis) into 500 ml methanol. The methanol was filtered and evaporated and the residue redissol-ved in 20 ml distilled water. Material which was not dissolved was precipitated by high speed centrfugation (100,000g). ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/307369a0
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  • 4
    Electronic Resource
    Electronic Resource
    Benzo[a]pyrene glucuronide and sulfate conjugate characterization by field desorption mass spectrometry (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 9 (1982), S. 99-102 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The field desorption mass spectral behaviour of benzo[a]pyrene metabolites were studied. Each of the phenol, diol, quinone and diol-epoxide metabolites of benzo[a]pyrene showed a single peak corresponding to the molecular ion. The water soluble glucuronides and sulfate conjugated metabolites showed protonated and cationized molecular ions. With the glucuronides, three peaks were observed and the abundance of these peaks may be indicators for characterization of the three isomeric glucuronides.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200090304
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  • 5
    Electronic Resource
    Electronic Resource
    Field desorption mass spectral fragmentation of monosaccharide isomers (1980)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 15 (1980), S. 240-243 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Field desorption ionization of selected monosaccharide isomers by potassium ion attachment in high fields is described. The ionization is obtained with a tungsten wire activated with carbon needles and covered with KH2PO4 salt. In addition to the potassium cationized molecular ions, reproducible fragmentation was obtained at 10 mA and 20 mA typical of the various monosaccharides. For instance, D-glucose tends to lose a water molecule, whereas D-fructose loses primarily methanol under similar conditions. Methanol elimination is suggested to be characteristic of furanoidal ketoses and water elimination for pyranoidal aldoses, whereas glycol elimination occurs for furanoidal aldoses.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210150506
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  • 6
    Electronic Resource
    Electronic Resource
    Comparison of the mass spectra of 6-thiotheophyllines and 6-sulfinytheophyllines (1982)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 17 (1982), S. 565-568 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Under electron impact, 6-thiotheophyllines eliminate various fragments from the pyrimidine moiety. In a retro Diels-Alder reaction, they lose the fragment X=C=NCH3 from positions 1 and 2 of the pyrimidine ring. In 6-sulfinyltheophyllines, the sulfinyl group is the main target for fragmentation; it can lose either oxygen or sulfur, and the abundance of [M - 16]+ and [M - 32]+ is much higher than the abundance of the molecular ion. Elimination of the sulfur atom of the 6-sulfinyl substituent, with retention of its oxygen, may be explained by intermediate formation of a ring. All further fragmentations of the 6-sulfinyl derivatives proceed by a primary loss of oxygen or sulfur, followed by elimination of fragments from the pyrimidine moiety, similar to the primary processes, observed in the mass spectra of the 6-thiotheophyllines.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210171107
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  • 7
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    Endogenous ouabain-like compound increases heart muscle contractility (1984)
    Springer Nature
    Details
    Publication Date: 1984-01-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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