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  • 1
    Electronic Resource
    Electronic Resource
    Direct formation of organocopper compounds by oxidative addition of zerovalent copper to organic halides (1984)
    s.l. : American Chemical Society
    The @journal of organic chemistry 49 (1984), S. 5280-5282 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00200a064
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of metolachlor and the metolachlor protectant CGA 43089 on the biosynthesis of epicuticular waxes on the primary leaves of Sorghum bicolor Moench (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 24 (1984), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Epicuticular wax synthesis by the primary leaf of Sorghum bicolor seedlings is inhibited when the germinating seeds are treated with 5 ppm metolachlor before germination. The composition of the free and esterified primary alcohols plus free and esterified fatty acids and aldehydes have been analysed. The predominant alcohol (75%) had 32 carbons while the 28- and 30-carbon homologues accounted for 78% of the fatty acids. Treatment of the germinating seeds with metolachlor strongly inhibited formation of the C28, C30 and C32 alcohols. Synthesis of C30 and C32 fatty acids was decreased while that of the C26 homologues was somewhat elevated. Simultaneous treatment of the germinating seed with metolachlor and the herbicide protectant CGA 43089 (α-[cyanomethoximino]-benzacetonitrile) resulted in normal wax synthesis. The results lead to the conclusion that the protectant prevents metolachlor from inhibiting synthesis of the dominating C28 to C30 chain-length constituents of the sorghum epicuticular wax.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1984.tb00601.x
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  • 3
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    Exact Welfare Measures and Economic Index Numbers (1984)
    Wien : Periodicals Archive Online (PAO)
    Journal of economics/Zeitschrift für Nazionalökonomie. 44 (1984) 27 
    Details
    ISSN: 0931-8658
    Topics: Economics
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4223-1984-044-00-000006
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  • 4
    Electronic Resource
    Electronic Resource
    Conformational studies of basic poly (α-amino acid)s in reversed micelles (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 727-733 
    Details
    ISSN: 1435-1536
    Keywords: Reversed micelle ; Basic poly(α-amino acid)s ; Circular dichroism measurement ; Conformational transition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The conformation of various basic poly (α-amino acid)s was investigated by CD measurements in aqueous solutions containing bis (2-ethylhexyl)sodium sulfosuccinate (AOT) as well as in the AOT reversed micelles. The addition of AOT into an aqueous solution of poly(L-lysine) induces the conformational transition from coil to ordered structure, followed by aggregation. On the other hand, poly(L-lysine) assumesΒ-structure in the reversed micelles at low wovalue (wo=[H2O]/[AOT]). Similarly to poly(L-lysine), poly(L-ornithine) takes an ordered structure in the aqueous solution containing AOT andΒ-structure in the reversed micelles. In this case, however, these ordered structures are not so stable, compared with that of poly(L-lysine). Poly(L-arginine) undergoes the conformational transition from coil to helix by addition of AOT into the aqueous solution. Further addition of AOT allows transformation intoΒ-structure. Copoly(L-lysyl-L-leucine) with 63% leucine residue was shown to take a stable helical conformation even in pure water. In the reversed micelles, however, this ordered structure is significantly changed probably because the hydrophobic interaction among the leucyl residues is lowered in the reversed micelles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01451545
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  • 5
    Electronic Resource
    Electronic Resource
    Conformational studies of poly(N5-Ω-hydroxyalkyl-L-glutamine)s in reversed micelles (1984)
    Springer
    Colloid & polymer science 262 (1984), S. 896-901 
    Details
    ISSN: 1435-1536
    Keywords: Reversed micelle ; poly(N5-Ω-hydroxyalkyl-L-glutamine)s ; circular dichroism measurement ; conformational transition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The molecular conformations of poly(N5-dihydroxyethylaminopropyl-L-glutamine) and poly(N5-dihydroxyethyl-L-glutamine) were investigated in reversed micelles of AOT as well as in aqueous solutions. Both poly(α-amino acid)s assume disordered structures in pure water. The conformation of poly(N5-dihydroxyethylaminopropyl-L-glutamine) transits intoα-helix in the reversed micelles as the molar ratio of water to AOT (w0=[H2O]/[AOT]) becomes smaller. A similar conformational transition was also observed in aqueous solutions when a certain amount of AOT was added. Under these conditions, however, poly(N5-dihydroxyethyl-L-glutamine) did not undergo a conformational transition intoα-helix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01452221
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  • 6
    Electronic Resource
    Electronic Resource
    The selenium content of infant food (1984)
    Springer
    European journal of nutrition 23 (1984), S. 230-236 
    Details
    ISSN: 1436-6215
    Keywords: selenium ; vegetable ; fruit ; cereals ; infant food
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Zusammenfassung Der Selengehalt der Nahrung weist große regionale Unterschiede auf. Nahrungsproben von Säuglings- und Kleinkinderkost aus Nordrhein-Westfalen wurden mit Hilfe der instrumentellen Neutronenaktivierungsanalyse untersucht und zeigten, daß der Selengehalt der hiesigen Gemüse und Früchte durchschnittlich etwa 5 ng/g beträgt. Nur Proben von Kartoffeln und Bananen weisen einen höheren Selengehalt auf. Bananen, importiert aus verschiedenen Gebieten der Erde, zeigen eine extrem hohe Schwankungsbreite mit Werten zwischen 4 und 164 ng Se/g. Fertiggerichte für Säuglinge und Kleinkinder haben einen der Kuhmilch vergleichbar niedrigen Selengehalt von durchschnittlich 24 ng/g. Außer Eiern enthalten nur Milchbreie und einige andere getreidehaltige Produkte mehr als 100 ng Se/g.
    Notes: Summary The selenium content of food exhibits great regional differences. Food samples of infants and young children from the North Rhine-Westphalia State in the Fed. Rep. of Germany were analysed by instrumental neutron activation analysis and showed that the average selenium content of local vegetable and fruit is below 5 ng/g wet weight. Only samples of potatoes and bananas exhibit higher selenium contents. The bananas, probably imported from different areas of the world, show an extremely high variance with values between 4 and 164 ng Se/g. Commercially available ready-for-use meals for infants or young children have a low Se content (median 24 ng/g) which is comparable to cow's milk. Besides eggs, cereals enriched with milk and some other cereal products contain more than 100 ng Se/g.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02021475
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  • 7
    Electronic Resource
    Electronic Resource
    Homologies between heterogeneous extrachromosomal DNA populations of Halobacterium halobium and four new halobacterial isolates (1984)
    Springer
    Molecular genetics and genomics 194 (1984), S. 91-97 
    Details
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Heterogeneous collections of covalently-closed circular DNA (cccDNA) comprise up to 10% of the total DNA of H. halobium and four other halophilic strains (SB3, GRA, GRB and GN101) recently isolated from different sources. All of these bacteria have purple membrane, bacterioruberin and gas vacuoles as characteristic phenotypic markers. Most of the major cccDNA species of these isolates are not homologous to pHH1, the main 150 kb cccDNA of H. halobium NRC817. Only GN101 and SB3 have a cccDNA which is partly homologous to pHH1. In GN101 the homology is to the halobacterial insertion sequence ISH23 found in pHH1. In SB3 the homology is to ISH26, a new insertion sequence isolated from H. halobium NRC817 which has a size of 1,400 bp. Extensive homologies mologies exist between the minor cccDNA species in all five strains indicating that this cccDNA species is highly conserved and possibly originates from (or is part of) the chromosome. A 1.6 kb high copy number cccDNA species is present in three independently isolated GN101, GRB and SB3. This 1.6 kb cccDNA is not homologous to any other extrachromosomal or chromosomal DNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00383502
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  • 8
    Electronic Resource
    Electronic Resource
    On the kinetics and mechanism of thermal degradation of polystyrene, 2.Part 1: cf.1. Formation of volatile compounds (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 991-1001 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Thermal degradation of polystyrene (PS) was carried out in the absence of oxygen between 292 and 336°C. The formed volatile products were analysed qualitatively and quantitatively by means of gas charomatography. It was found that the composition of the volatile fraction is a function of conversion and independent of temperature for most of the products. A radical chain mechanism is proposed to explain these experimental results.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021850513
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  • 9
    Electronic Resource
    Electronic Resource
    Elastic and quasielastic light scattering studies on the branching characteristics of dextrans (1984)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 185 (1984), S. 2205-2212 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The influence of branching on the radius of gyration and the hydrodynamic radius of dextran macromolecules was studied by elastic and quasielastic light scattering (ELS and QELS). The hydrodynamic radius is more sensitive to low levels of branching than the radius of gyration. At higher branching levels a saturation of the hydrodynamic radius rh is observed, while the radius of gyration rG still changes distinctly. The ratio rG/rh proves to be a measure of the flexibility of the macromolecules; the latter is increasing with molecular weight for short linear chains and is decreasing with increasing degree of branching. Measurements were carried out in water (thermodynamically good solvent) and in ethylene glycol (under theta conditions) on four series of dextran fractions having rather narrow molecular weight distributions.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1984.021851015
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  • 10
    Electronic Resource
    Electronic Resource
    Modellierung der n-Hexan-Pyrolyse: Experimentelle Untersuchungen in einer Normaldruck-StrömungsapparaturAus der Dissertation von M. Schärfe, Univ. Heidelberg 1983. (1984)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 56 (1984), S. 488-489 
    Details
    ISSN: 0009-286X
    Keywords: Chemische Kinetik ; Kohlenwasserstoff-Pyrolyse ; Modellierung komplexer Reaktionen ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330560619
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