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  • 1990-1994  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Upgrading Miskolc Sewage-Treatment Works, Hungary (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 7 (1993), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Traditionally, sewage-works design in Hungary has been based on rigid national standards with little consideration being given to the requirements of individual situations. This has resulted in plants that performed poorly and were expensive to construct and operate.The paper describes measures to improve the environment by upgrading Miskolc sewage-treatment works, and the conflict between the cost of those facilities, and the ability to pay against a background of changing economic conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.1993.tb00842.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Water Quality and Management Strategies in London's Docklands (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 6 (1992), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Regeneration and changes in land use in London's Docklands have resulted in new water quality requirements. Areas previously occupied by docks now form part of redevelopment projects which have made a feature of the water.The paper describes a project to provide water that is aesthetically pleasing and of a quality suitable for water contact recreational activities.An extensive programme of water sampling and analysis was carried out to gain an understanding of the processes affecting water quality, including the monitoring of algal growth. The river is the main source of nutrients in the docks, which results in large concentrations of algal biomass and bacterial contamination. The principal strategy is to limit light via artificial mixing systems supplemented by limiting the inflow of nutrients from the river.The results from the water sampling programme have been used to build a 3D computer model with a supporting graphic information system to attain (a) qualitative evaluations of management and development options, and (b) short-term predictions of changes in water quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.1992.tb00753.x
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A mantle metasomatic injection event linked to late Cretaceous kimberlite magmatism (1992)
    [s.l.] : Nature Publishing Group
    Nature 360 (1992), S. 726-728 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Periodic volcanism has occurred on the Kaapvaal craton in southern Africa since the Archaean era, and each episode will have modified the composition of the subcontinental lithos-pheric mantle in which the magmas were generated or through which they passed, or in other words caused mantle ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/360726a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Potassium loss during metasomatic alteration of mica pyroxenite from Oldoinyo Lengai, northern Tanzania: contrasts with fenitization (1992)
    Springer
    Contributions to mineralogy and petrology 112 (1992), S. 254-260 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Mica pyroxenite xenoliths, occurring as the cores of nephelinite and ijolite bombs in the pyroclastic deposits of the active volcano Oldoinyo Lengai, have undergone metasomatism in which K was lost and Fe2+ and Ti gained. This is unlike the alkali and ferric iron addition that typifies most examples of metastomatism adjacent to peralkaline igneous rocks in carbonatite complexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310459
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Quaternary kimberlitic volcanism on the Tanzania Craton (1994)
    Springer
    Contributions to mineralogy and petrology 116 (1994), S. 473-485 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The tuffs and lava of the Igwisi Hills are the youngest magmatic rocks on the Tanzania Craton. They consist of small xenoliths of phlogopite-calcite-garnet lherzolite in an olivine-calcite-dolomite-apatite-perovskite-spinel-serpentine matrix. Their mineralogy, major element chemistry and isotope chemistry indicate strong affinities with kimberlite, particularly the calcite-rich kimberlites of the Benfontein Sills, South Africa. As such, the Igwisi Hills are the youngest example of kimberlite magmatism. The magma formed by small degrees of melting of a carbonate-apatite-bearing peridotite source at depths in excess of 110 km.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00310913
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    Paper (German National Licenses)
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