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  • 1
    Electronic Resource
    Electronic Resource
    Twenty-One New X-Ray Diffraction Powder Patterns (1960)
    s.l. : American Chemical Society
    Analytical chemistry 32 (1960), S. 796-799 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60163a019
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  • 2
    Electronic Resource
    Electronic Resource
    The chemical and physical characteristics of heavy metals in humus and till in the vicinity of the base metal smelter at Flin Flon, Manitoba, Canada (1998)
    Springer
    Environmental geology 34 (1998), S. 39-58 
    Details
    ISSN: 1432-0495
    Keywords: Key words Heavy metals ; Base metals ; Smelter ; Anthropogenic contamination ; Chemical partitioning ; Soil ; Particulate emissions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  Trace element geochemistry of humus (〈0.425 mm) and till (〈0.002 mm) collected in the Flin Flon-Snow Lake area, northern Manitoba and Saskatchewan, provides a regional context for assessing smelter contamination in the environment. The area includes a Cu-Zn smelter known to discharge As, Cd, Cu, Fe, Hg, Pb, and Zn. In this study, sequential extraction analyses, scanning electron microscopy and x-ray diffraction analyses were used on a suite of samples to determine: (1) the chemical and physical characteristics of heavy metals in surficial sediments related to distance from the smelter, (2) criteria for assessing the relative contribution of these metals from natural and anthropogenic sources, and (3) the potential of these metals for remobilization in the environment. Humus geochemistry reflects the anthropogenic and natural component of heavy metal concentrations. Smelter-related elements show anomalously high values adjacent to the smelter, decreasing with distance until background values are reached at 70–104 km, depending on the element. In humus, Zn is associated primarily with labile phases; Hg with non-labile phases. Adjacent to the smelter, high proportions and concentrations of Zn and Hg in non-labile phases, indicative of smelter-derived particulates, are confirmed by SEM examination. The particles occur as spheres, irregular grains, and with organics. With increasing distance from the smelter, the geochemical response to bedrock composition is more obvious than the anthropogenic input. Till geochemistry reflects the natural variation imposed by bedrock composition. At highly contaminated sites (〈3 km from the smelter), increased percentages of smelter-related elements in labile phases suggests heavy metals are leached from humus to the underlying sediment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002540050255
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  • 3
    Electronic Resource
    Electronic Resource
    Beware of formaldehyde in disguise (1982)
    Springer
    European journal of clinical pharmacology 23 (1982), S. 373-375 
    Details
    ISSN: 1432-1041
    Keywords: formaldehyde ; methenamine ; health hazards ; carcinogenicity ; mutagenicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The toxic potential of formaldehyde has recently been widely discussed, including the consequences of its release from certain building materials. The action of methenamine, used in the treatment of urinary infections, is based on the release of formaldehyde in the body. Various aspects of formaldehyde toxicity are discussed as a basis for reevaluation of methenamine and reconsideration of its safety.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00613624
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  • 4
    Electronic Resource
    Electronic Resource
    Cation Diffusion in Natural Silicate Melts (1986)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 7 (Jan. 1986), p. 257-266 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/20/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.7.257.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Mrs. Thatcher's Old-Style Dirigisme (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Economic affairs 3 (1983), S. 0 
    Details
    ISSN: 1468-0270
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Claims that Mrs Thatcher's administration is market-based ignore, not least, its protectionist trade policies, recently exemplified in the EEC's inability to sign the GATT agreement. Professor Henderson assesses the Government's disappointing policy record in trade and in industry and energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-0270.1983.tb01481.x
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  • 6
    Electronic Resource
    Electronic Resource
    Latin America and the Great War: A preliminary survey of developments in Chile, Peru, Argentina and Brazil
    Amsterdam : Elsevier
    World Development 9 (1981), S. 717-734 
    Details
    ISSN: 0305-750X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geography , Political Science , Sociology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0305-750X(81)90060-7
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  • 7
    Electronic Resource
    Electronic Resource
    The determination of phosphorus in rocks and minerals by activation analysis
    Amsterdam : Elsevier
    Analytica Chimica Acta 39 (1967), S. 512-515 
    Details
    ISSN: 0003-2670
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0003-2670(01)80547-X
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  • 8
    Electronic Resource
    Electronic Resource
    Standing crop and distribution of fish in drifting and attached floating meadow within an Upper Amazonian varzea lake (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 47 (1995), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The standing crop and distribution of fish within the floating meadow habitat of Lago Mamirauá, an upper Amazonian floodplain lake, were studied during December 1993 when the water was rising and had just begun to enter the forest. The ichthyofauna was dominated by six groups, the Anostomidae, Gymnotiformes, Erythrinidae, Serrasalmidae, Synbranchidae and Cichlidae. For anchored meadow, total wet weight was estimated as 312 kg ha -1 and total number as 90 400 individuals ha-1. This biomass estimate was probably below the annual maximum because some fish had already dispersed into the forest, but, the number of individuals was close to the annual maximum because of the recent arrival of juvenile Serrasalmidae and Cichlidae. For drifting islands of meadow fish biomass and density were estimated as 192kg ha-1 and 12 700 individuals ha-1 respectively. The Synbranchidae, Gymnotiformes and Erythrinidae avoided drifting meadow. In comparison, the Cichlidae and Anostomidae, while favouring marginal, anchored meadow, were frequently dispersed by drifting islands. The Siluriformes were unique in favouring drifting over anchored meadow. For this group the observed down-stream drift may be a seasonal migration to the main river channels. Juvenile fish avoided drifting islands, presumably to avoid being flushed from the lakes. Their abundance was lowest at the mouth of the lake. The generally abundant Serrasalmus spp. juveniles were absent from meadow at the mouth of the lake.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1995.tb01894.x
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  • 9
    Electronic Resource
    Electronic Resource
    An approach to the prediction of temperate freshwater fish communities (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 27 (1985), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The organization and structure of temperate fish communities is discussed. A measure of organization based on the Shannon measure of entropy is applied. It is concluded that the way organization changes with species number reflects the underlying structure of the community. The prediction of fish assemblages by the analysis of individual species requirements is also investigated using fish data sets from regions considered to be undergoing acidification. The species set within a habitat is generated by a set of rules termed the operational niche. It was concluded that an analysis based on physico-chemical conditions within the habitats gave reasonable correspondence between observed and predicted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1985.tb03248.x
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  • 10
    Electronic Resource
    Electronic Resource
    The growth and mortality of larval herring, Clupea harengus L., in the River Blackwater Estuary, 1978–1980 (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 24 (1984), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Herring larvae were sampled in the Outer Thames Estuary and the River Blackwater Estuary in the springs of 1978, 1979 and 1980. Data were collected on larval stage, yolk sac and post yolk sac, larval length and total larval numbers. Newly hatched larvae were 6.8±0.5 mm long and the growth rate of yolk sac larvae was estimated at 0.18 mm d−1 (L= 6.8±0.186t). The growth rate of post yolk sac larvae increased to 0.43mm d−1 (L= 11±48.0±43t). Mortality estimates, derived from total numbers in the summed estuary segments, varied between the years and the cohorts within the year. In 1979 the mortality rates were 0.061 d−1 and 0.074 d−1 for the two cohorts. The mean size of the larval population was estimated at 2.48×109 (1.63–3.77 × 109) which agreed well with population size estimates from egg laying and from catch in numbers at age together with estimated fishing mortality rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1984.tb04832.x
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