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  • Animals  (4,869)
  • Analytical Chemistry and Spectroscopy  (3,355)
  • Earth Resources and Remote Sensing
  • SPACE SCIENCES
  • United States
  • 2000-2004  (6,743)
  • 1975-1979  (4,105)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Understanding agri-food networks as social relations (2000)
    Springer
    Agriculture and human values 17 (2000), S. 279-283 
    Details
    ISSN: 1572-8366
    Keywords: Agri-food network ; Gender ; Sustainable agriculture ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Actor network theory and supply chainmanagement theory provide suggestive researchdirections for understanding regional agri-foodnetworks. These theories claim that relationshipsbased upon trust and cooperation are critical to thestrength and vitality of the network. This means thatexploring and detailing these relationships among thesuppliers, producers, workers, processors, brokers,wholesalers, and retailers within specific regionalgeographies of these networks are critical forfurthering cooperation and trust. Key areas ofcooperation include resource sharing andapprenticeship programs. Employing food networks as akey unit of contextual analysis will deepen ourunderstanding of how to enhance their resiliency andvibrancy. Important questions can be raised about thedifference gender makes for farmers, brokers,entrepreneurs, and workers in local food networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007692303118
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  • 2
    Electronic Resource
    Electronic Resource
    The linear relation between temperatures based on the silica content of groundwater and regional heat flow: A new heat flow map of the United States (1978)
    Springer
    Pure and applied geophysics 117 (1978), S. 227-241 
    Details
    ISSN: 1420-9136
    Keywords: Silica geothermometer ; Regional heat flow ; Geothermal energy ; Ground water circulation ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Application of the silica geothermometer to over 70,000 non-thermal groundwaters from the United States has shown that there is a correlation between the average silica geotemperatures for a region (T SiO2 in °C) and the known regional heat flow (q in mW m−2) of the form: 1 $$TSiO_2 = mq + b$$ wherem andb are constants determined to be 0.67°C m2 mW−1 and 13.2°C respectively. The physical significance of ‘b’ is the mean annual air temperature. The slope ‘m’ is related to the minimum average depth to which the groundwaters may circulate. This minimum depth is estimated to be between 1.4 and 2.0 km depending on the rock type. A preliminary heat flow map based on equation (1) is presented using theT SiO2 for new estimates of regional heat flow where conventional data are lacking. Anomalously high localT SiO2 values indicate potential geothermal areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00879749
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  • 3
    Electronic Resource
    Electronic Resource
    Health benefits due to reductions of CO levels (1977)
    Springer
    Environmental management 1 (1977), S. 131-137 
    Details
    ISSN: 1432-1009
    Keywords: CO Reduction ; Health Benefits ; United States ; Air Quality ; COHb ; Automotive CO emissions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A method is presented by which an upper limit of the adverse health effect of existing ambient CO concentrations on the U. S. population can be estimated. The method is based upon estimating the primary human physiological response to CO concentrations (COHb%) for the population in terms of person-hour-COHb〉1.5% resulting from the time exposure of the population to CO concentrations in excess of the federally designated ambient air quality standard. The estimates of person-hour-COHb〉1.5% are for exposures only to ambient CO concentrations and do not take into account the additional CO exposure for people who smoke or have occupational exposures. We estimate that there were up to 30.9×109 person-hour-COHb〉1.5% in 1973 due to ambient concentrations in excess of the ambient 8-hour CO standard, with approximately 5×109 person-hour-COHb〉1.5% occurring West of the Continental Divide and 25.9〉109 person-hour-COHb〉1.5% occuring East of the Continental Divide; of these 21.3×109 personhour-COHb〉1.5% occurred in New York City. It was also estimated that a 60% reduction in 1973 ambient concentrations of CO (corresponding to an automotive emmision standard of less than 15 g/mile) would be needed to reduce to zero the person-hour-COHb〉1.5%. The maximum estimated effects on the U.S. population of increases in ambient CO concentration above 1973 levels are also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01866103
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  • 4
    Electronic Resource
    Electronic Resource
    The ultrastructure, catecholamine, and prolactin contents of the rostral pars distalis of the fish Mugil platanus after reserpine or 6-hydroxydopamine administration (1975)
    Springer
    Cell & tissue research 162 (1975), S. 551-563 
    Details
    ISSN: 1432-0878
    Keywords: Hypophysis ; Rostral pars distalis ; Mugil platanus ; Animals ; Prolactin hormone secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The rostral pars distalis (RPD) of the teleost Mugil platanus from animals pretreated with reserpine or 6-hydroxydopamine (6-HODA) were assayed for dopamine (DA) or noradrenaline (NA) or for prolactin hormone. Such determinations were coupled with electron microscopy. It was found that reserpine and 6-HODA produced a significant decrease in the content of DA, NA, and prolactin. Electron microscope studies revealed that prolactin cells became activated as judged by ultrastructural criteria. After 6-HODA treatment type “B” neurosecretory fibers entering the RPD became selectively destroyed. These observations lead us to suggest that prolactin secretion is under inhibitory control by type “B” neurosecretory fibers of adrenergic nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00209354
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  • 5
    Electronic Resource
    Electronic Resource
    Preliminary distributional analysis of US endangered bird species (2000)
    Springer
    Biodiversity and conservation 9 (2000), S. 1313-1322 
    Details
    ISSN: 1572-9710
    Keywords: BIOCLIM ; birds ; conservation strategies ; ecological niche modeling ; endangered species ; GARP ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A first exploration of applications of ecological niche modeling and geographic distributional prediction to endangered species protection is developed. Foci of richness of endangered bird species are identified in coastal California and along the southern fringe of the United States. Species included on the Endangered Species List on the basis of peripheral populations inflate these concentrations considerably. Species without protection in the US National Park System are focused particularly in peninsular Florida. Application of this methodology to additional taxa and regions holds promise for diverse conservation applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008924322405
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  • 6
    Electronic Resource
    Electronic Resource
    Western migrants in central Europe: Isolated individuals or members of transnational communities? (2000)
    Springer
    GeoJournal 50 (2000), S. 105-108 
    Details
    ISSN: 1572-9893
    Keywords: community ; Czech Republic ; East Central Europe ; ethnicity ; migration ; Prague ; social exclusion ; transnationalism ; United States
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Notes: Abstract Migration flows from western Europe, the United States and Canada to east central Europe have received little attention so far. But numbers are now considerable and in the context of globalisation it seems appropriate to conceptualise communities of Westerners in terms of transnational social spaces as defined by Glick Schiller et al. Study of Americans in Prague reveals three main groups: enterprise managers, lifestyle migrants and entrepreneurs in small and medium-sized enterprises. All are engaged in a variety of different processes of community-building, often with clear trends towards a new transnationalism. Yet, the individual attempt to live in two societies is limited by the marked boundaries of the communities and by the degree of social exclusion which they experience from the majority population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007183532417
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  • 7
    Electronic Resource
    Electronic Resource
    Methods in high resolution gas chromatography. Two-dimensional techniques (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 85-90 
    Details
    ISSN: 0935-6304
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Basic methodology to effect the separation of complex samples by gas chromatography is discussed from an experimental point of view. Several possibilities are presented which are commonly used to enhance the information content of a gas chromatographic run. These include incorporation of more than one set of retention data, multiple detectors, and special column switching techniques. These and other techniques have sometimes been labeled “multidimensional” in the literature. An attempt is made to define the term “two-dimensional chromatography”.The review is divided into sections which point out the different directions which have been taken to deconvolute chromatographically unresolved components. Particular emphasis is placed on technology which is capable of dealing with samples of extreme complexity, and instrumentation for trace- and ultratrace analysis is dicussed with specific examples. The future of two-dimensional techniques in gas chromatography is looked into.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240010202
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  • 8
    Electronic Resource
    Electronic Resource
    Quick setting plug for capillary column making (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 92-92 
    Details
    ISSN: 0935-6304
    Keywords: Gas Chromatography ; Capillary, glass ; Plugs for static coating procedure ; Advantages over sodium silicate setting plugs ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240010203
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  • 9
    Electronic Resource
    Electronic Resource
    Static coating of glass capillary columns. Solvent selection; Column filling; Solvent evaporation (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 93-94 
    Details
    ISSN: 0935-6304
    Keywords: Gas Chromatography ; Capillary, glass ; Static coating, apolar gums ; Pentane better than methylene chloride, ready in 8 hours ; (20 m, 0.3 mm i.d.) ; 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/jhrc.1240010204
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  • 10
    Electronic Resource
    Electronic Resource
    Separation of monounsaturated fatty acid methyl esters by capillary GLC? (1978)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 1 (1978), S. 94-95 
    Details
    ISSN: 0935-6304
    Keywords: Gas Chromatography ; Capillary, glass ; Quantitative analysis of unsaturated fatty methyl esters ; Remarkable systematic errors of cis/trans determination ; Errors depend on phases chosen ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240010205
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