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  • 1
    Electronic Resource
    Electronic Resource
    IN VITRO EFFECTS OF PROSTAGLANDINS ON THYROID GLAND METABOLISM (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 180 (1971), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1971.tb53197.x
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  • 2
    Electronic Resource
    Electronic Resource
    Analysis of the demersal community of fish and cephalopods on the Agulhas Bank, South Africa (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 43 (1993), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The demersal fish and cephalopod communities of the continental shelf and upper slope from 17 to 395m deep were studied during five annual cruises between Cape Agulhas and Port Alfred, South Africa. The cruises showed a consistent pattern of an inshore community (〈100m), a shelf community (c. 90–190m) and a shelf-edge/upper slope fauna (〉200m). These groups were identified by dendrograms and multidimensional scaling cluster analysis, which supported on-board observations of catch variation with depth. Although the boundaries are not clearly defined, examination of physical features at the clustered stations suggests that depth, temperature and, to a lesser extent, oxygen concentration are important in the grouping. Occasional, apparently anomalous associations of inshore stations suggested that water temperature and oxygen may over-ride the normal depth distributions of the species groups. This intimates that patterns offish and cephalopod distribution may be dynamic and in part related to the physical parameters of the water body.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1993.tb01186.x
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  • 3
    Electronic Resource
    Electronic Resource
    Exposure to Cigarette Smoke and Expression of the Protein Encoded by the p53 Gene in Bronchial Carcinoma (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 686 (1993), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1993.tb39181.x
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  • 4
    Electronic Resource
    Electronic Resource
    Analysis of HMW glutenin subunits encoded by chromosome 1A of bread wheat (Triticum aestivum L.) indicates quantitative effects on grain quality (1992)
    Springer
    Theoretical and applied genetics 83 (1992), S. 373-378 
    Details
    ISSN: 1432-2242
    Keywords: Wheat ; HMW glutenin subunits ; Bread-making quality ; Gene ; Protein sequence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A gene encoding the high-molecular-weight (HMW) subunit of glutenin 1Ax1 was isolated from bread wheat cv Hope. Comparison of the deduced amino acid sequence with that previously reported for an allelic subunit, 1Ax2*, showed only minor differences, which were consistent with both subunits being associated with good bread-making quality. Quantitative analyses of total protein extracts from 22 cultivars of bread wheat showed that the presence of either subunit 1Ax1 or 1Ax2*, when compared with a null allele, resulted in an increase in the proportion of HMW subunit protein from ca. 8 to 10% of the total. It is suggested that this quantitative increase in HMW subunit protein may account for the association of 1Ax subunits with good quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224285
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  • 5
    Electronic Resource
    Electronic Resource
    More on the need for circadian, circaseptan and circannual optimization of cyclosporine therapy (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 20-22 
    Details
    ISSN: 1420-9071
    Keywords: Pancreatic allograft ; cyclosporine chronotherapy ; circadian ; circaseptan ; circannual
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Cyclosporine chronotherapy of pancreas-allotransplanted rats revealed, beyond a circadian stage-dependence of equal daily doses, further gain in graft function from doses varying from day to day with an about 7-day periodicity, the first highest dose being given on the 3rd or 5th day after surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01975877
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  • 6
    Electronic Resource
    Electronic Resource
    Patterns of provisioning and iteroparity in a solitary halictine bee,Lasioglossum (Evylaeus) fratellum (Perez), with notes onL. (E.) calceatum (Scop.) andL. (E.) villosulum (K.) (1996)
    Springer
    Insectes sociaux 43 (1996), S. 167-182 
    Details
    ISSN: 1420-9098
    Keywords: Lasioglossum ; Halictidae ; iteroparity ; provisioning strategies ; pleometrosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary On Dartmoor, UK the temperate halictine beeLasioglossum (Evylaeus) fratellum is solitary and univoltine. A significant proportion of individually marked foundresses reproduce during two different seasons (iteroparity). This could represent a form of risk-spreading in environments where conditions are harsh and unpredictable. Perhaps associated with iteroparity, foundresses put in relatively low reproductive effort, often failing to provision their nests on suitable days, despite the small number of days available on Dartmoor. Foundresses stopped provisioning asynchronously, then remained in their nests until well after offspring emergence. There was a small proportion of digynous nests, in which nest-sharing appeared to be temporary.L. (E.) calceatum had a similar life-cycle on Dartmoor.L. villosulum was also solitary, and was able to provision its nests under less favourable weather conditions than the other two species. Information is also provided on nest productivity andSphecodes parasites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01242568
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  • 7
    Electronic Resource
    Electronic Resource
    Neutron reflectivity study of adsorbed diblock copolymers (1994)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 721-726 
    Details
    ISSN: 0392-6737
    Keywords: Neutron scattering techniques (including small-angle scattering) ; Macromolecular and polymer solutions (solubility, swelling, etc.) ; polymer melts ; Solid-fluid interfaces ; Structure and morphology ; thickness ; Conference proceedings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Summary In this paper, we summarize our cumulative work on neutron reflectivity studies of polystyrene-poly(vinyl-2-pyridine) (PS-PVP) and polystyrene-polyethylene oxide (PS-PEO) adsorbed at a quartz-solvent interface. Deuterated toluene was chosen as the solvent since it is a good solvent for PS and a poor one for either of the other two blocks. In this case, the polystyrene dangles into the solvent while the other block acts as an anchor. The neutron reflectivity studies reveal that the form of the polymer density profile normal to the substrate may be varied from an extended «brush» to a condensed «mushroom» conformation by manipulating the ratio of the molecular weights of the two blocks. In addition, we present new data on the PS-PEO system in a poor solvent, deuterated cyclohexane, under conditions of shear flow in Poiseuille geometry. We find that when the PS-PEO diblock is absorbed from cyclohexane and is allowed to relax, the PS chain takes on a «mushroom» conformation. However, when the shear is applied, the layer shear thickens due to the PS chains extending to nearly twice their original lengths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02456717
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  • 8
    Electronic Resource
    Electronic Resource
    The physiology of anthracene biodegradation by the white-rot fungus Bjerkandera sp. strain BOS55 (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 179-186 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A recently isolated white-rot strain, Bjerkandera sp. strain BOS55, displays high extracellular peroxidase activity, and rapidly degrades polycyclic aromatic hydrocarbons (PAH). In this study, the culture conditions for the biodegradation of the model PAH compound, anthracene, were optimized with respect to O2, N, and C. An additional objective was to determine if the decolorization of the polymeric ligninolytic indicator dye, Poly R-478, could be correlated to anthracene biodegradation observed under a wide range of culture conditions. The supply of O2 was found to be the most important parameter in the biodegradation of anthracene. Increasing culture aeration enhanced the biodegradation of anthracene and the accumulation of its peroxidase-mediated oxidation product anthraquinone. Decolorization of Poly R-478 was less affected by inadequate aeration. Provided that ample aeration was supplied, the degradation of anthracene under different culture conditions was strongly correlated with the ligninolytic activity as indicated by the rate of Poly R-478 decolorization. Concentrations up to 22 mM NH4 +N did not repress anthracene biodegradation and only caused a 0%–40% repression of the Poly R-478 decolorizing activity in various experiments. A cosubstrate requirement of 100 mg glucose / mg anthracene biodegraded was observed in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050235
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  • 9
    Electronic Resource
    Electronic Resource
    Detoxification and partial mineralization of the azo dye mordant orange 1 in a continuous upflow anaerobic sludge-blanket reactor (1997)
    Springer
    Applied microbiology and biotechnology 47 (1997), S. 83-90 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract In batch toxicity assays, azo dye compounds were found to be many times more toxic than their cleavage products (aromatic amines) towards methanogenic activity in anaerobic granular sludge. Considering the ability of anaerobic microorganisms to reduce azo groups, detoxification of azo compounds towards methanogens can be expected to occur during anaerobic wastewater treatment. In order to test this hypothesis, the anaerobic degradation of one azo dye compound, Mordant orange 1 (MO1), by granular sludge was investigated in three separate continuous upflow anaerobic sludge-blanket reactors. One reactor, receiving no cosubstrate, failed after 50 days presumably because of a lack of reducing equivalents. However, the two reactors receiving either glucose or a volatile fatty acids (acetate, propionate, butyrate) mixture, could eliminate the dye during operation for 217 days. The azo dye was reductively cleaved to less toxic aromatic amines (1,4-phenylenediamine and 5-aminosalicylic acid) making the treatment of MO1 feasible at influent concentrations that were over 25 times higher than their 50% inhibitory concentrations. In the reactor receiving glucose as cosubstrate, 5-aminosalicylic acid could only be detected at trace levels in the effluent after day 189 of operation. Batch biodegradability assays with the sludge sampled from this reactor confirmed the mineralization of 5-aminosalicylic acid to methane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050893
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  • 10
    Electronic Resource
    Electronic Resource
    The physiology of anthracene biodegradation by the white-rot fungus Bjerkandera sp. strain BOS55 (1994)
    Springer
    Applied microbiology and biotechnology 42 (1994), S. 179-186 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract A recently isolated white-rot strain, Bjerkandera sp. strain BOS55, displays high extracellular peroxidase activity, and rapidly degrades polycyclic aromatic hydrocarbons (PAH). In this study, the culture conditions for the biodegradation of the model PAH compound, anthracene, were optimized with respect to O2, N, and C. An additional objective was to determine if the decolorization of the polymeric ligninolytic indicator dye, Poly R-478, could be correlated to anthracene biodegradation observed under a wide range of culture conditions. The supply of O2 was found to be the most important parameter in the biodegradation of anthracene. Increasing culture aeration enhanced the biodegradation of anthracene and the accumulation of its peroxidase-mediated oxidation product anthraquinone. Decolorization of Poly R-478 was less affected by inadequate aeration. Provided that ample aeration was supplied, the degradation of anthracene under different culture conditions was strongly correlated with the ligninolytic activity as indicated by the rate of Poly R-478 decolorization. Concentrations up to 22 mM NH4 + N did not repress anthracene biodegradation and only caused a 0%–40% repression of the Poly R-478 decolorizing activity in various experiments. A cosubstrate requirement of 100 mg glucose / mg anthracene biodegraded was observed in this study.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00170243
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