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  • 1
    Electronic Resource
    Electronic Resource
    New synthesis of rethrolones (1971)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 93 (1971), S. 4319-4320 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00746a053
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  • 2
    Electronic Resource
    Electronic Resource
    Portable, Automatic Alarm for Detection of Toxic Agents in Atmosphere (1958)
    s.l. : American Chemical Society
    Analytical chemistry 30 (1958), S. 1236-1239 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60139a015
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  • 3
    Electronic Resource
    Electronic Resource
    The Use of the Term ‘Flux’ (1961)
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 621-621 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The ambiguity is quite unnecessary and its continuance is surely most undesirable. We should like to propose, therefore, that any unit such as the chad, whatever its magnitude, should be defined as a unit of flux density, its dimensions being ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/190621a0
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  • 4
    Electronic Resource
    Electronic Resource
    A practical guide to the prevention ofFusarium mycotoxins in grain and animal feedstuffs (1989)
    Springer
    Archives of environmental contamination and toxicology 18 (1989), S. 443-451 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The guidelines in this report focus on prevention of mycotoxin contamination associated with plant and animal production in eastern Canada. The topics covered include a brief description of theFusarium mycotoxins of particular concern in eastern Canada, the life cycle ofFusarium and recommendations for reducing fungal infection and mycotoxin production in grain crops and animal feed. The presence of complex mixtures of toxins, as well as research on detoxification and mycotoxin residues in animal food products are discussed. For those involved in advising producers and millers on occupational hazards associated with mycotoxins, guidelines on the safe handling of contaminated grain are also included. The review provides background information for scientists and technical personnel advising grain and animal producers on how to reduce mycotoxin problems associated withF. graminearum contamination of grain, especially wheat and corn. It may be necessary to revise the recommendations to suit different agricultural regions or different plant and animal production systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01062372
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  • 5
    Electronic Resource
    Electronic Resource
    Variations of heavy metals and arsenic in fish and other organisms from the Calcasieu River and Lake, Louisiana (1989)
    Springer
    Archives of environmental contamination and toxicology 18 (1989), S. 804-818 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract The edible parts of several species of fish and other marine organisms inhabiting the Calcasieu River/Lake, Louisiana were analyzed for Cd, Cr, Cu, Pb, Hg, Ag, Zn, and As. Concentrations of all metals measured in both intra and interspecies showed no significant variation with sample location. Differences in elemental concentrations were related to organism mobility and not to site-specific variations in metal loadings. Different species of finfish contained only trace amounts of Cd (0.02-0.08), Ag (〈0.01–0.3), Pb (〈0.2–0.5), and As (〈0.1–0.3) mg kg−1. Concentrations of Cu and Cr were highly variable, in contrast to Zn, which was present in relatively constant amounts across all species (28 ± 7 mg kg−1). Sessile organisms such as oysters had the highest concentrations of heavy metals, including Cd. Periphyton and Zooplankton were the only groups that showed differences in metal concentrations with sampling location.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01160294
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  • 6
    Electronic Resource
    Electronic Resource
    Heavy metal content of sediments in the Calcasieu River/Lake Complex, Louisiana (1990)
    Springer
    Hydrobiologia 192 (1990), S. 149-165 
    Details
    ISSN: 1573-5117
    Keywords: heavy metals ; sediments ; Calcasieu River/Lake ; Louisiana
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The heavy metals Cd, Cr, Cu, Pb, Hg, Ag, and Zn, and the metalloid As were measured in surface sediments at permanent stations located in the Calcasieu River/Lake Complex. The relationships among metal concentrations in different areas of the system were investigated to determine sources, source strength, and transport. The point-source inputs of heavy metals were assumed to be industrial outfalls (Bayou d'Inde) and sewage outfalls (Bayou d'Inde and Contraband Bayou). Although these inputs have not seriously affected the entire river/lake system, stressed regions exist within each bayou. The background levels of arsenic and heavy metals were: 0.60 (As), 0.3 to 1.4 (Cd), 25 (Cr), 10 (Cu), 15 (Pb), 〈 0.05 (Hg), 0.07 (Ag), and 40 mg kg−1 (Zn). Stations near sewage outfalls and industrial outfalls had increased metal concentrations above these background levels, but the increases were restricted to the regions near the outfalls. The metals discharged into the bayous were not being transported to the remainder of the river/lake complex.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00006011
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  • 7
    Electronic Resource
    Electronic Resource
    Pheromonal attraction and allomonal interruption ofIps pini in California by the two enantiomers of ipsdienol (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 703-717 
    Details
    ISSN: 1573-1561
    Keywords: Scolytidae ; bark beetle ; Ips pini ; pheromone ; ipsdienol ; enantiomer ; interruption ; allomone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Air containing volatile compounds from around maleIps pini boring in ponderosa pine logs from California was condensed, fractionated by GC, and assayed in the laboratory and field. The only fraction that showed consistent activity in laboratory assays contained a single compound identified as ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol). Synthetic racemic ipsdienol showed no activity in either the laboratory or field. However, (−)-ipsdienol, the naturally occurring enantiomer, was attractive toI. pini in the laboratory and field, whereas (+)-ipsdienol interrupted the response ofI. pini to a natural source of attraction in field tests. (−)-Ipsdienol is a major component of the attractant pheromone of this species, since its level of activity in laboratory assays was quantitatively comparable to that of the condensed volatiles, and it was as attractive as maleI. pini boring in ponderosa pine in the field. (+)-Ipsdienol is a component of the pheromone of the competing species,I. paraconfusus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987680
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  • 8
    Electronic Resource
    Electronic Resource
    Distribution of Al, V, and Mn in lichens across Calcasieu Parish, Louisiana (1987)
    Springer
    Water, air & soil pollution 33 (1987), S. 155-164 
    Details
    ISSN: 1573-2932
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The lichen Ramalina stenospora was collected from 16 location in Calcasieu Parish and from 2 locations in Cameron Parish in Southwestern Louisiana. The metals V, Mn, and Al were measured in lichen specimens collected during three seasons — fall 1983, winter and spring 1984. The metals were determined using thermal neutron activation analysis. Vanadium was found to range in concentration from 2.1 to 10 mg kg−1; and Al from 900 to 4500 mg kg−1. Metal concentration was found to decrease exponentially with distance outward from the industrial corridor. The major industries included were an Al plant, two refineries and five chemical plants mostly related to plastics production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00191384
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  • 9
    Electronic Resource
    Electronic Resource
    Hydrogen-abstraction reactions from organosilicon compounds. The reactions of methyl, trideuteromethyl, trifluoromethyl, and ethyl radicals with tetramethylsilane (1969)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 1 (1969), S. 339-351 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The following Arrhenius parameters have been determined for the hydrogen-abstraction reactions: R + (CH3)4Si → RH + (CH3)3SiCH3 TextRTemp. (°K)E (kcal/mole)Log A (mole-1 cc sec-1)Log k(400°K) (mole-1 cc sec-1)CF3330-4337.23 ± 0.0911.90 ± 0.057.95CH3396-47610.23 ± 0.3611.55 ± 0.185.68CD3396-49610.36 ± 0.1211.84 ± 0.066.20C2H5423-52211.40 ± 0.4811.88 ± 0.225.68The activation energies are in keeping with the strengths of the bonds formed during the reaction. By comparison with the activation energies for the analogous reactions of neopentane it is estimated that D((CH3)3SiCH2—H) ≃ 97 kcal/mole.The A factors for the above series of reactions fall within the range predicted by transition-state theory for this type of process and the validity of previous results of Kerr, Slater, and Young is seriously in doubt.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550010306
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  • 10
    Electronic Resource
    Electronic Resource
    Hydrogen abstraction reactions from organosilicon compounds. The reactions of methyl, trifluoromethyl, and ethyl radicals with trichlorosilane (1969)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 1 (1969), S. 371-380 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Arrhenius parameters have been determined for the hydrogen-abstraction reactions: R + SiHCl3 + RH + SiCl3 TextRTemp (°K)E(kcal/mole)Log A(mole-1 cc sec-1)Log k(400°K) (mole-1 cc sec-1)CF3323-4615.98 ± 0.0611.77 ± 0.038.50CH3333-4434.30 ± 0.0810.83 ± 0.044.48C2H5314-4135.32 ± 0.0711.54 ± 0.048.63The trend in activation energies ECH3 〈 EC2H5 〈 ECF3 is interpreted as indicating a polar effect in the reaction of CF3 with SiHCl3 and the similar reactivities of all three radicals appear to be due to the high exothermicity of the reactions.The A Factors for the reactions are normal for hydrogen abstraction reactions of free radicals. The previous results of Kerr, Slater, and Young for CH3 abstracting an H atom from SiHCl3 have been amended.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550010403
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