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  • 1
    Electronic Resource
    Electronic Resource
    Urease activity and its relation to soil organic matter, microbial biomass nitrogen and urea-nitrogen assimilation by maize in a Brazilian Oxisol under no-tillage and tillage systems (2000)
    Springer
    Biology and fertility of soils 32 (2000), S. 52-59 
    Details
    ISSN: 1432-0789
    Keywords: Key words Urease ; Microbial biomass nitrogen ; Soil organic matter ; No-tillage ; Maize
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  We studied the relationship between urease activity (UA) and soil organic matter (SOM), microbial biomass N (Nbiom) content, and urea-N fertilizer assimilation by maize in a Dark Red Latosol (Typic Haplustox) cultivated for 9 years under no-tillage (NT), tillage with a disc plough (DP), and tillage with a moldboard plough (MP). Two soil depths were sampled (0–7.5 cm and 7.5–15 cm) at 4 different times during the crop cycle. Urea was applied at four different rates, ranging from 0 to 240 kg N ha–1. The levels of fertilizer N did not affect the UA, SOM content, and Nbiom content. No significant difference between the treatments (NT, DP, and MP) was observed for SOM during the experiment, probably because the major part of the SOM was in recalcitrant pools, since the area was previously cultivated (conventional tillage) for 20 years. The Nbiom content explained 97% and 69% of the variation in UA in the upper and deeper soil layer, respectively. UA and biomass N were significantly higher in the NT system compared to the DP and MP systems. The highest maize productivity and urea-N recovery was also observed for the NT system. We observed that the increase in urea-N losses under NT, possibly as a consequence of a higher UA, was compensated for by the increase in N immobilized in the biomass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740000213
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  • 2
    Electronic Resource
    Electronic Resource
    Packaging Effects on Applesauce in Multilayer Polymeric Films and Glass (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 57 (1992), 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: Four different multilayer polymeric films were assessed for suitability as packaging materials for hot-filled fruit products, by determining the effect of storage time and temperature on applesauce packaged in each film type, as compared to glass. Applesauce from each package type was assessed at S wk intervals for changes in sensory and analytical characteristics during 15 wks storage at 20°, 30°, 37° and 43°C. Films containing an ethylene vinyl alcohol or polyvinylidine chloride layer performed similarly to glass. Applesauce packaged in a nylon/ linear low density polyethylene film was less acceptable and had significantly greater browning at all temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1992.tb08068.x
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  • 3
    Electronic Resource
    Electronic Resource
    Hydroxymethylfurfural Accumulation in Applesauce Packaged in Multilayer Polymer Films and Glass (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 57 (1992), 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: Applesauce packaged in four different multilayer polymer films and glass was evaluated for changes in hydroxymethylfurfural content during storage. Packages were held for 15 wk at 20°, 30°, 37° and 43°C. Hydroxymethyfurfural content was measured by HPLC analysis every 5 weeks. For all package types more HMF was measured at higher storage temperatures as expected, however, total amounts of HMF also varied according to package type. Comparison of HMF across . package types as an index of thermal history would be of questionable value.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1992.tb05534.x
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  • 4
    Electronic Resource
    Electronic Resource
    Florentium or Illinium? (1927)
    [s.l.] : Nature Publishing Group
    Nature 119 (1927), S. 637-638 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a recent issue of NATURE (Feb. 26), and also in Science, Prof. W. A. Noyes writes claiming priority for the discovery of the element No. 61 for the American chemists, Messrs. Harris, Hopkins, and Yntema. As an argument in favour of this priority two papers are quoted: one by C. C. Kiess ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/119637a0
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  • 5
    Electronic Resource
    Electronic Resource
    Temperature distribution and variation in passively aerated static compost piles
    Amsterdam : Elsevier
    Bioresource Technology 48 (1994), S. 257-263 
    Details
    ISSN: 0960-8524
    Keywords: Composting ; manure slurry ; passive aeration ; temperature distribution
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0960-8524(94)90155-4
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of temperature on the performance of an SBR treating liquid swine-manure
    Amsterdam : Elsevier
    Bioresource Technology 47 (1994), S. 219-227 
    Details
    ISSN: 0960-8524
    Keywords: Manure treatment ; SBR performance at low temperature ; modelling
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0960-8524(94)90184-8
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  • 7
    Electronic Resource
    Electronic Resource
    Induction of Systemic Tolerance in Normal but not in Transgenic Mice Through Continuous Feeding of Ovalbumin (2004)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Scandinavian journal of immunology 60 (2004), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The ingestion of most dietary protein can cause systemic tolerance, and such tolerance is easier to induce in younger than in older mice. In this study, we examined whether oral tolerance to ovalbumin (OVA) could be induced in OVA-T-cell receptor (OVA-TCR)-specific transgenic mice. Continuous feeding or gavage with OVA induced tolerance, measured as reduced antibody production, in young and aged BALB/c mice, in a dose-dependent manner, but this effect was not observed in transgenic mice. Once BALB/c mice became tolerant, this state was maintained for over 44 weeks, although the tolerant state could be reversed by adoptive cell transfer. DO11.10 mice did not become tolerant upon continuous feeding with OVA, and the adoptive transfer of naïve cells increased the levels of specific antibodies in their sera after antigenic challenge. The immunization schedule used here leads to a Th2-dependent antibody response in normal BALB/c mice. However, the same schedule induced both Th1- and Th2-antibody responses in transgenic mice. Dendritic cells (DC) from tolerant BALB/c mice were less efficient in the induction of the proliferation of cocultured T cells from both BALB/c and DO11.10 mice, as well as Th1 [interleukin (IL)-2 and interferon (IFN)-γ] and Th2 (IL-4 and IL-10) cytokine production. The DC from DO11.10 transgenic mice were equally efficient in the induction of T-cell proliferation in both normal and transgenic mice, as well as in the induction of Th1 and Th2 cytokines, whether or not the mice consumed OVA. Transforming growth factor (TGF)-β secretion was significantly lower in the supernatants of T cells from both normal and transgenic mice cocultured with DC from DO11.10 mice that had consumed OVA, while it was significantly higher in the presence of DC from normal tolerant mice, thus implicating TGF-β as a regulatory cytokine in oral tolerance in the murine model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0300-9475.2004.01454.x
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  • 8
    Electronic Resource
    Electronic Resource
    New diterpenoids of the brown seaweed stoechospermum marginatum: structure of stoechospermol
    Amsterdam : Elsevier
    Tetrahedron Letters 21 (1980), S. 2249-2252 
    Details
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0040-4039(80)80016-5
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  • 9
    Electronic Resource
    Electronic Resource
    Multiple criteria analysis integrates economic, ecological and social objectives for coral reef managers (1999)
    Springer
    Coral reefs 18 (1999), S. 393-402 
    Details
    ISSN: 1432-0975
    Keywords: Key words Coral reef management ; Policyevaluation ; Multiple objectives ; Participation ; Coastal zone management ; Marine park ; Multiple criteria analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract  Managing a coral reef in a small island state is a difficult task. Apart from having conflicting objectives and few data there is the added problem of how to evaluate the less tangible benefits of management. This study reports the successful use of multiple criteria analysis to help the managers of a coral reef to make “good” decisions. “Good” decisions are consistent with the community’s desires to, in this case, preserve social and ecological values while simultaneously maintaining the economic benefits of dive tourism and maintaining the park as a global model of successful management. Multiple criteria analysis provides a systematic framework for evaluating management options. This study presents one of the first times multiple criteria analysis has been used in coral reef management, let alone in a non-industrialised setting. The results suggest that the method may be more widely useful than previously thought.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003380050217
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  • 10
    Electronic Resource
    Electronic Resource
    Manta tow counts as indices of the distribution and abundance of Acanthaster planci: a reply to De'ath (1992)
    Springer
    Coral reefs 11 (1992), S. 179-181 
    Details
    ISSN: 1432-0975
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00255473
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