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  • 1
    Monograph available for loan
    Monograph available for loan
    The calculus of observations : a treatise on numerical mathematics (1924)
    London [usw.] : Blackie and Son
    Details Availability
    Call number: O 1078
    Type of Medium: Monograph available for loan
    Pages: XVI, 395 S.
    Edition: 2. impression (with corrections)
    Location: Archive - must be ordered
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Isolation and characterization of papaya peptidase A from commercial chymopapain (1975)
    s.l. : American Chemical Society
    Biochemistry 14 (1975), S. 3695-3700 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00687a028
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  • 3
    Electronic Resource
    Electronic Resource
    Use of narrow-bore columns in amino acid analysis (1973)
    s.l. : American Chemical Society
    Analytical chemistry 45 (1973), S. 2286-2288 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac60335a023
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  • 4
    Electronic Resource
    Electronic Resource
    Secondary Succession and Natural Habitat Restoration in Abandoned Rice Fields of Central Korea (2002)
    Boston, MA, USA : Blackwell Science Inc
    Restoration ecology 10 (2002), S. 0 
    Details
    ISSN: 1526-100X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Floristic composition and soil characteristics (moisture, pH, nutrient contents) in abandoned upland rice paddies of different ages were analyzed to clarify the regenerative aspects of succession as a tool for habitat restoration. The study sites represented five seral stages: newly abandoned paddy fields; successional paddy fields abandoned for 3, 7, and 10 years; and a 50-year-old Alnus japonica forest. A vegetation sere was apparent in changes of dominant plant species in the order Alopecurus aequalis var. amurensis (annual grass), Aneilema keisak (annual forb), Juncus effusus var. decipiens (rush), Salix koriyanagi (willow), and Alnus japonica (alder) communities. These temporal stages resemble the spatial zonation of vegetation in local riparian floodplain ecosystems, indicating a hydrosere, with soil moisture decreasing over time. Age distributions and life forms of the dominant plant species support a “tolerance” model of secondary succession, in which the established species persist into later successional stages. Persistence of earlier colonizers led to a net cumulative increase in species richness and a more even distribution of species cover with increasing field age. Between 10 and 50 years, vegetation stabilizes as an alder community. Soil moisture content decreased steadily with paddy field age after an initial rise immediately after their abandonment, whereas pools of organic matter, N, P, K, Ca, and Mg, increased with field age. The pace and direction of recovery of native vegetation and natural soil properties in these abandoned rice paddies resembled classic old field succession, a form of secondary succession that often serves as a template for guiding restoration efforts. Active intervention, in particular dismantling artificial levees, could accelerate the recovery process, but natural habitat recovery generally appears sufficiently robust to achieve “passive” restoration of this rare community without intervention.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1526-100X.2002.00003.x
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  • 5
    Electronic Resource
    Electronic Resource
    Restoration of Woody Plants to Capped Landfills: Root Dynamics in an Engineered Soil (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Restoration ecology 5 (1997), S. 0 
    Details
    ISSN: 1526-100X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Closed or abandoned landfills represent significant land areas, often in or near urban centers, that are potential sites for ecological restoration of native woodlands. But current guidelines in many jurisdictions do not allow for the installation of trees or shrubs above landfill clay caps, although these plants have many environmental, functional, and aesthetic advantages, including a rapid start to community succession. Typical closure procedures for capped landfills include only a grass cover to control moisture infiltration and impede soil erosion. The main concern that limits the application of a woody cover to a closed landfill is that roots may penetrate and weaken the clay cap. As part of a comprehensive experimental program on woodland restoration, we installed 22 tree and shrub species on Staten Island, New York (the Fresh Kills Sanitary Landfill). We found no evidence that roots of the transplanted woody plants penetrate caps used on these landfills. Root growth requirements and dynamics stop penetration of these materials. Anoxic and acidic conditions were found in the sandy subsoil above the cap, as indicated by corrosion patterns on steel test rods. Also, the intensity of mycorrhizal infection on the experimental plants was high in the surface soil and decreased progressively with increasing soil depth. The potential vertical rooting depth during this time period was greater than that occurring over the clay cap. This was shown from data collected on a nearby control site, where seven of the species were installed on an engineered soil lacking a clay barrier layer, and roots of all seven species penetrated deeper than on the landfill. The engineered landfill soils are poor growth media for roots, and below ground constraints that limit restoration on these sites must be addressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1526-100X.1997.09721.x
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  • 6
    Electronic Resource
    Electronic Resource
    Biodiversity Resources for Restoration Ecology (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Restoration ecology 2 (1994), S. 0 
    Details
    ISSN: 1526-100X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Biological resources can be more usefully incorporated into many aspects of restoration ecology. During the planning and design stage, the wide genotypic variation in natural plant populations must be recognized and exploited. This will ensure that genotypes used on a site are best adapted to local conditions and have a greater probability of survivorship than arbitrarily chosen material. Also, certain unusual genotypes can be located using the principles of evolutionary ecology and can be installed in areas with extreme conditions, such as soils contaminated with heavy metals, in areas where rapid colonizing ability (high seed set and/or clonal growth) is particularly advantageous, or where soils are of poor quality. Similarly, where high herbivore pressure is a threat to restoration, genotypes that are well defended, chemically or mechanically, against animal enemies should be selected to initiate the restoration process. The nursery industry can be encouraged to supply an ecologically wider selection of material for restoration, originating from local biological reserves and natural habitats. During the management phase of a restoration, local natural habitats are critical as reservoirs of biological control agents, seed sources for plant species, and members of higher trophic levels and additional plant species needed during succession. Mutualists such as pollinators, seed dispersers, and mycorrhizal fungi are vital to the success of a restoration project, and these must invade from nearby natural habitats or must be deliberately introduced. During the evaluation phase of restoration, local natural areas should be used as templates of community composition and structure from which one measures success. A functioning restoration project will interact biologically with surrounding areas, the exchange of species and genes being particularly important. Analysis of the microbial and invertebrate communities that have invaded the installed plant community may be useful and accurate determinants of ecological function. For these latter stages of the restoration process, the value of preserving local habitat remnants is high and complements their usefulness as a source of ecologically precise material for installation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1526-100X.1994.tb00055.x
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  • 7
    Electronic Resource
    Electronic Resource
    How to measure an organization's intellectual capital (1996)
    Bingley : Emerald
    Managerial auditing journal 11 (1996), S. 36-39 
    Details
    ISSN: 0268-6902
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Intellectual capital, as used here, is a concept that deals with intellectual property concepts, like patents and licences, but also includes less tangible assets like know-how, skills and information systems. The need to measure the amount of intellectual capital in an organization has grown in importance. The worth or value of an organization cannot be given by the values in the balance sheet alone. Just as the use of discounted cash-flow analysis is being accepted as a more reliable measure of value and will eventually replace other accounting-based valuations, the value of intellectual capital will need to be measured and determined. Intellectual capital will also be a useful concept for setting corporate goals and strategies. Describes some current conceptions of intellectual capital and looks at ways of measuring intellectual capital. Compares intellectual capital valuation with financial cash flow valuation. Suggests that additional studies regarding the measurement of intellectual capital are still needed, and recommends, when good measures of intellectual capital are not available, the use of indicators as a means of indicating that intellectual capital is present or growing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02686909610131675
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  • 8
    Electronic Resource
    Electronic Resource
    Chromatographic Evidence for Nonlinear Partitioning of Aromatic Compounds Between Petroleum and Water (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 30 (1992), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Chromatographic analysis of published laboratory data suggests that the observed tailing behavior of aromatics (benzene, toluene, ethylbenzene, and xylene) being leached from a residual-petroleum phase into a flushing-water phase is explicable using nonlinear (specifically favorable) partitioning relations in the absence of kinetic limitations. This result raises questions regarding the legitimacy of deducing kinetic limitations of interphase transfer based upon the assumption of linear partitioning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1992.tb01577.x
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  • 9
    Electronic Resource
    Electronic Resource
    WATER LEVEL RECORDER MONITORING SYSTEM (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 13 (1975), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1975.tb03089.x
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  • 10
    Electronic Resource
    Electronic Resource
    Extinction, turnover and species diversity in an experimentally fragmented California annual grassland (1988)
    Springer
    Oecologia 76 (1988), S. 71-82 
    Details
    ISSN: 1432-1939
    Keywords: Extinction ; Species diversity ; Turnover ; Fragmentation ; Grassland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Many natural populations are subdivided among partially isolated habitat patches, but the influence of habitat patchiness per se on species immigration, extinction, and the resulting patterns of species diversity, has received virtually no experimental study. In an experiment designed to test the effects of habitat subdivision on local community structure, we compare the diversity and annual turnover of flowering plant species in 3 treatments of the same total area, but subdivided to different degrees. We experimentally fragmented a California winter annual grassland into isolated plots, two of 32 m2, eight of 8 m2, and 32 of 2 m2, each treatment representing a combined area of 64 m2. Insularization of the experimental habitat fragments is provided by grazing sheep. The effects of plot area on species diversity, extinction, and turnover are consistent with the MacArthur-Wilson model. Species richness increases with the degree of habitat subdivision. Extinction, immigration, and turnover, however, are relatively independent of the degree of subdivision. These experimental results contrast with predictions that habitat subdivision necessarily results in greater rates of extinction accompanied by reduced species diversity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00379603
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