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  • 2005-2009  (121)
  • 2000-2004  (56)
  • 1995-1999  (50)
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  • 1
    Series available for loan
    Series available for loan
    Proceedings of the second Workshop: Application of artificial intelligence techniques in seismology and engineering seismology : October 4th to 6th, 1995, Walferdange (Grand-Duchy of Luxemburg) (1996)
    Luxembourg : Centre Europeen de Geodynamique et de Seismologie
    Associated volumes
    Details Availability
    Call number: S 02.0465(12)
    In: Cahiers du Centre Européen de Géodynamique et de Séismologie
    Type of Medium: Series available for loan
    Pages: XVIII, 304 S.
    ISBN: 2879770440
    Series Statement: Cahiers du Centre Europeen de Geodynamique et de Seismologie 12
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Methods to Detect the Occurrence of Various Indicator Bacteria on the Surface of Retail Poultry in Spain (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Contamination levels (cfu/g and cfu/cm2) of indicator microorganisms in retail broiler chicken carcasses in León (Spain) were investigated. Counts (log10 cfu/g) were 5.19, 3.04, 2.73, 3.38, and 3.16 for total aerobic counts (TAC), Enterobacteriaceae, coliforms determined by the standard VRBA method (coliforms-VRBA), coliforms determined by the Hydrophobic Grid Membrane Filter method (coliforms-HGMF), and Escherichia coli (HGMF method), respectively. These values fit into the microbiological criteria for poultry meat consulted. A low correlation coefficient was found between TAC and Enterobacteriaceae counts (r = 0.308; P = 0.053) and between coliforms-VRBA and coliforms-HGMF counts (r = 0.398; P= 0.048). The determination method had a significant influence on the coliform counts obtained. All broiler chicken carcasses harbored E. coli biotype I. E. coli biotype II was detected in 20% of the samples. The HGMF method was not completely specific for detecting E. coli since 11.25% of false positive colonies were found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb10673.x
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  • 3
    Electronic Resource
    Electronic Resource
    Local data are vital to worldwide conservation (2000)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 403 (2000), S. 241-241 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir Red Data Books and Red Lists of threatened species have drawn attention to species at risk of extinction worldwide. As the number of national Red Lists increases, more information becomes available to assess the global status of species. Unfortunately, global assessments ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/35002183
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  • 4
    Electronic Resource
    Electronic Resource
    The ParaHox gene cluster is an evolutionary sister of the Hox gene cluster (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 392 (1998), S. 920-922 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Genes of the Hox cluster are restricted to the animal kingdom and play a central role in axial patterning in divergent animal phyla. Despite its evolutionary and developmental significance, the origin of the Hox gene cluster is obscure. The consensus is that a primordial Hox cluster arose by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/31933
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  • 5
    Electronic Resource
    Electronic Resource
    Nitrate is reduced by heterotrophic bacteria but not transferred to Prochlorococcus in non-axenic cultures (2002)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 41 (2002), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The ability to assimilate nitrate in non-axenic isolates of Prochlorococcus spp. was addressed in this work, particularly in three low-irradiance adapted strains originating from ocean depths with measurable nitrate concentrations. None of the studied strains was able to use nitrate as the sole nitrogen source. Nitrate reductase (NR; EC 1.6.6.2) activity was, however, detected using the methyl viologen/dithionite assay in crude extracts from all studied Prochlorococcus strains. Characterization of this activity unambiguously demonstrated its enzymatic origin. We observed that NR activity did not decrease in vivo under darkness. Attempts to detect the narB gene (coding for NR in other cyanobacteria) by PCR with primers designed on the basis of the specific codon usage in Prochlorococcus were unsuccessful. However, when primers were designed considering the codon frequencies typical of other bacteria, we could amplify different fragments of nas genes, coding for bacterial assimilatory NRs. Similar amplification products were obtained using colonies of contaminant bacteria from Prochlorococcus cultures as PCR template. Furthermore, NR activity was found in cultures of these contaminants, demonstrating the non-cyanobacterial origin of the enzyme. These results strongly suggest that the studied strains of Prochlorococcus lack NR, in spite of inhabiting environments with nitrate as the main nitrogen source. In addition, they indicate that the nitrite produced by heterotrophic bacteria is not transferred to Prochlorococcus for growth, thus discarding a trophic nitrogen chain between heterotrophic bacteria and Prochlorococcus in the studied cultures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.2002.tb00976.x
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  • 6
    Electronic Resource
    Electronic Resource
    Defining the validity of a biochemical index of soil quality (1999)
    Springer
    Biology and fertility of soils 30 (1999), S. 140-146 
    Details
    ISSN: 1432-0789
    Keywords: Key words Soil quality indicators ; Soil biochemical properties ; Soil degradation ; Soil pollution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  The native soils of Galicia (NW Spain) exhibit a biochemical equilibrium such that total soil N is a function of five biochemical and microbiological parameters: microbial biomass C, mineralized N, phosphomonoesterase, β-glucosidase and urease activities. To investigate whether the ratio of the total N calculated from biochemical soil properties (Nc) and the total N as measured by the Kjeldahl method (Nk; Nc/Nk) can be used as an index of soil quality, we determined these variables and consequently the ratio in three kinds of disturbed soils: an artificially Cu-contaminated soil, two lignite mine soils, and a number of arable soils. In none of the studied soils did the individual biochemical parameters respond consistently to the factors influencing soil quality, but in all cases soil degradation was reflected by the Nc/Nk value, which differed more or less markedly from 100%. Nc/Nk can therefore be used for the rapid evaluation of soil degradation, since it distinguishes among biochemically balanced soils, soils in a transient state of high microbiological and biochemical activity and degraded soils. It can also serve as a reliable basis for the rapid calculation of the "ecological dose" (ED50) of soil pollutants. The use of Nc/Nk as an objective index of the biochemical quality of soils is recommended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050600
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  • 7
    Electronic Resource
    Electronic Resource
    Environmental Exposure and Distribution of Lead in Four Species of Raptors in Southeastern Spain (1997)
    Springer
    Archives of environmental contamination and toxicology 33 (1997), S. 76-82 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. The purpose of this study was to monitor exposure to lead in four species of raptors in Southeastern Spain (Murcia Region). Samples of liver, kidney, brain, blood, and bone from two species of diurnal raptors (European kestrel (Falco tinnunculus) and European buzzard (Buteo buteo)) and two species of nocturnal raptors (Eagle owl (Bubo bubo) and Little owl (Athene noctua)) were obtained during 1994. Relationships were found between size and age of the birds, the nearness to areas of human activity and lead concentrations in tissues. The lead distribution pattern reveals that the bone is the principle organ for accumulation (0.62–43 mg/Kg, dry weight), followed by the kidney (0.03–0.66 mg/Kg, wet weight), and liver (0.017–0.05 mg/Kg, w.w.), and to lesser extent, the brain (0.013–0.223 mg/Kg, w.w.). This distribution pattern indicates that raptors in Southeastern Spain were exposed to environmental low lead levels continuously over an extended period of time. Correlations between lead in bone and lead in soft tissues were higher in European buzzards (r = 0.87–0.95) and Eagle owl (r = 0.71–0.86) than those found in European kestrels (r = 0.53–0.58) and Little owls (r 〈 0). However, correlations between lead concentrations in soft tissues and in blood were high (r = 0.85–0.99).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002449900226
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  • 8
    Electronic Resource
    Electronic Resource
    Book reviews (1996)
    Springer
    Surveys in geophysics 17 (1996), S. 145-147 
    Details
    ISSN: 1573-0956
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01904477
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  • 9
    Electronic Resource
    Electronic Resource
    Distribution of Cadmium in Blood and Tissues of Wild Birds (1996)
    Springer
    Archives of environmental contamination and toxicology 30 (1996), S. 252-258 
    Details
    ISSN: 1432-0703
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Abstract. The principal aim of this study is to establish the kinetic behavior of cadmium by determining the concentrations of this element in the blood and in different tissues of wild birds exposed to environmental cadmium. We have studied a total of 118 birds living in the southeast of Spain, a zone with a Mediterranean climate and stopover point for important migratory species. The distribution pattern followed by the cadmium in our samples reveals that the kidney is the primary organ for accumulation, followed by the liver and, to lesser extent, the brain and bone. Low concentrations were found in the tissues and in the blood. The study of correlations between the different tissues and blood suggests a compartmental behavior of cadmium under these exposure conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00215805
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  • 10
    Electronic Resource
    Electronic Resource
    Lead and Cadmium in Red Deer and Wild Boar from Sierra Morena Mountains (Andalusia, Spain) (1998)
    Springer
    Bulletin of environmental contamination and toxicology 61 (1998), S. 730-737 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001289900822
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