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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Growth and change 18 (1987), S. 0 
    ISSN: 1468-2257
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Economics
    Notes: Indexes of leading indicators are used to forecast short-run changes in economic activity in many states and metropolitan areas. This article examines the forecasting performance of a sample of such regional indexes over several business cycles. Although these indexes vary across regions, the results show that they do provide forecasts of recessions and recoveries and also exhibit some potential for forecasting quantitative changes in regional employment.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 25 (1989), S. 0 
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The current Lake Okeechobee regulation schedule is two feet higher than previous schedules that were in operation during the early 1970's. Its implementation was in response to prolonged periods of drought that occurred during the 1960's and early 1970's and the large increases in consumptive uses that were projected, and are presently occurring in south Florida. The additional storage provided by the schedule undoubtedly helped prevent more severe water shortages during the record setting 1980–1982 drought. However, two environmental concerns associated with the present schedule surfaced in recent years with the return to more normal rainfall conditions. First, the present schedule allows frequent high water conditions to exist in the lake that appear to be stressful to the unique littoral zone habitat of the lake. Second, the allowable buildup of storage prior to the dry season, combined with the large required decrease in storage prior to the hurricane (wet) season, contribute to the need for large regulation releases to tidewater. These large discharges have undesirable impacts on ecosystems of the downstream estuaries. This paper presents an alternative schedule that better meets the needs of the estuarine habitats without negatively impacting the other objectives of managing the lake.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 52 (1987), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Using differential centrifugation, natural highly colored orange pigment granules were recovered from the juices of single lots of Florida Dancy tangerines harvested in each of 4 years, and orange/red pigment granules from two lots of Murcotts harvested during a single year. Recovery of the concentrated colored matter was about 0.6% by vol. for the tangerine juice; 2.4% for the Murcott juice. Color was significantly enhanced in poorly colored commercial orange juices through addition of relatively small amounts of pigment granules recovered from the tangerine and Murcott juices. Addition of pigment granules to poorly colored orange juices to increase color numbers from 1 to 1.5 points did not significantly affect flavor (P 〉 0.05) in the resultant products.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 505 (1987), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 525 (1988), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of business finance & accounting 14 (1987), S. 0 
    ISSN: 1468-5957
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 33 (1988), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Body energy partitioning was examined for field-caught, adult walleye pollock; additional laboratory studies were conducted on fish held under controlled temperature conditions at Seward, Alaska.Average consumption for pollock feeding daily was 0.5% of body weight (3100 cal) at 5°C, resulting in an average growth of 0.12% body weight day−1. These results suggest that large pollock grow at similar rates and have similar food conversion efficiencies to those of Atlantic cod held at similar temperatures.Resting metabolic rates measured on adult fish were combined with similar data from juveniles to calculate a regression of specific metabolic rate against wet weight: y= 173x−026. Maintenance rations amounted to 4.8 cal g−1 day−1 at 5°C, very close to the 0.28% value for juveniles. Estimation of metabolic rate using maintenance ration data resulted in values that were 55% higher than those obtained from oxygen consumption data for unfed fish. Weight loss during starvation was 0.18% of body weight day−1 at 5°C, corresponding roughly to a starvation metabolic rate 50% lower than the resting metabolic rate we report.We estimate that an adult pollock will lose about 37% of its prespawning body weight and about 46% of its body energy during spawning. These losses result, primarily, from changes in the weight of gonad, liver and somatic tissues as opposed to changes in specific energy content of those tissues.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 43 (1987), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Nine strains of four species of Campylobacter (C. jejuni, C. fetus, C. coli, C. laridis) were studied by genomic Southern hybridization. Restriction digests of chromosomal DNA prepared by treatment with either Eco RV or Rsa I were probed with an oligonucleotide specific for Campylobacter 16S ribosomal RNA genes. Six distinct hybridization patterns were obtained, each indicating the presence of 2–4 copies of the 16S rRNA gene are encoded in Campylobacter DNA. Differences in the hybridization patterns were observed not only between members of two species, but also between individual strains of the same species. Of the four C. jejuni strains tested, two different hybridization patterns were evident. Similar results were observed with different strains of C. coli and C. laridis. The relative simplicity of the patterns obtained, combined with the apparent diversity among individual strains, suggests that DNA-fingerprinting with the 16S rRNA gene probe could be a potentially useful identification method in epidemiological studies of Campylobacter infection.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 37 (1986), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A genetic determinant for serum resistance, designated iss, has been found previously on the colicinogenic plasmid ColV2-K94. In this work we have identified a second serum resistance gene, traT, on ColV2-K94. The serum resistance mediated by derivatives of ColV2-K94 was due to presence of one or both of the iss and traT genes. Plasmid pWS12 (TraT+ Iss+) contained the kanamycin (Km) resistance transposon Tn903 inserted near the origin of replication of ColV2-K94, and plasmids pWS15 (TraT+), pWS16 (TraT+) and pWS18 (TraT+ Iss+) were deletion derivatives of pWS12 constructed in vitro and in vivo. pWS12 and pWS18 conferred a 20-fold increase in relative resistance to 20% guinea pig serum when introduced into the serum-susceptible, genetically defined recA strain of Escherichia coli K-12, AB2463. Plasmids pWS15 and pWS16, from which iss had been deleted, still conferred 5-fold increases in relative resistance on AB2463. The level of resistance conferred on this strain by the antibiotic resistance plasmid R100–1 (which expresses the traT serum resistance gene) was comparable to that of plasmids pWS15 and pWS16. The 25-kDa traT gene product was identified by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) analysis of the outer membrane proteins of strain AB2463 carrying ColV2-K94. This protein cross-reacted immunologically with the traT protein expressed by F or R100–1. Our results indicated that both traT and iss are capable of mediating serum resistance in ColV2-K94.
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  • 10
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: An extracellular peroxidase capable of degrading a lignin-model compound has been isolated from cultures of Coriolus versicolor, a white-rot basidiomycete. The enzyme was produced in non-oxygenated stationary cultures under conditions of carbon limitation with the addition of veratryl alcohol as an inducer. The enzyme was separated and shown to have veratryl alcohol oxidase activity, and to be capable of oxidation of a wide range of aromatic substrates in the presence of H2O2. Its spectral characteristics showed it to be a haemcontaining protein, and sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) stained with Coomassie blue or by periodic acid-Schiff's reagent showed it to be a glycosylated protein of 50 kDa.This is the first demonstration that a peroxidase similar to the lignin peroxidase isolated from Phanerochaete chrysosporium has been characterised from cultures of another white-rot basidiomycete, namely Coriolus versicolor.
    Type of Medium: Electronic Resource
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