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  • 2005-2009  (50)
  • 2000-2004  (60)
  • 1975-1979  (70)
  • 1
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    Clement Agunwa, "More Than Once" (Book Review) (1977)
    Leiden : Periodicals Archive Online (PAO)
    Journal of Asian and African Studies. 12:1/4 (1977:Jan./Oct.) 316 
    Details
    ISSN: 0021-9096
    Topics: Ethnic Sciences , History , Political Science , Sociology , Economics
    Description / Table of Contents: BOOK REVIEWS
    Notes: SPECIAL NUMBER ON THE WARRIOR TRADITION IN MODERN AFRICA
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:n207-1977-012-01-000056
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  • 2
    Electronic Resource
    Electronic Resource
    Has the Sun a companion star? (1978)
    [s.l.] : Nature Publishing Group
    Nature 272 (1978), S. 649-649 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] HARRISON1 suggests that the Sun is accelerating at 106 cm s2 in the general direction of the galactic centre, and attributes this acceleration to a companion star with M/R2 = 1.7x 10- (1) where M is the mass in solar units and R is the distance in AU. Analysis of planetary perturbations2 gives a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/272649a0
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  • 3
    Electronic Resource
    Electronic Resource
    Millimetre and submillimetre measurements of the Crab Nebula (1979)
    [s.l.] : Nature Publishing Group
    Nature 279 (1979), S. 703-705 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The 300 and 400 p? observations of the Crab Nebula were made with the University of Chicago //13 photometer on the NASA Kuiper Airborne Observatory in September 1978. The detector was a Ga-Ge bolometer with heat trap field optics2. The system had a focal plane aperture of 1.9' and a chopper throw ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/279703b0
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  • 4
    Electronic Resource
    Electronic Resource
    Infrared observations of the most luminous quasar (1978)
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 298-300 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 gives accurate positions for the quasar and a nearby star, as measured from the ESO B survey plates. These positions are derived from those of the five nearest SAO stars (194936, 194939, 194974, 194977, 194979) including the effects of the proper motions of these stars. Using the 1.5 m ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/275298b0
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  • 5
    Electronic Resource
    Electronic Resource
    Inductive capacity of irradiated dermal papillae (1977)
    [s.l.] : Nature Publishing Group
    Nature 265 (1977), S. 733-734 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The mystacial vibrissal follicles of rats and mice form a remarkably constant pattern. Each follicle regularly produces a series of vibrissae with constant characteristics. Their lengths can be easily measured in the live animal by the capillary tube method2,3. The four largest vibrissal follicles, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/265733a0
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  • 6
    Electronic Resource
    Electronic Resource
    An Electrical Analogue to Simulate the Oxygen Relations of Roots in Anaerobic Media (1976)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 36 (1976), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The paper describes the construction and the theory underlying a simple electrical analogue which may be used to simulate the internal oxygen relations of roots in the wetland condition. The model represents an unbranched root lying within an oxygen sink and consists of twenty circuit units linked in series. Each unit which can be programmed independently, represents the major oxygen diffusion paths, impedances and sinks recognizable in a centimetre-long segment of root/wet soil system. Simplicity has been achieved by specifying constant radius for the root (0.05 cm), constant potential activity for the external sink, by expressing respiration and radial oxygen loss as a function of root surface area, and by the non-inclusion of oxygen storage capacity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1976.tb02261.x
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  • 7
    Electronic Resource
    Electronic Resource
    Radial Oxygen Loss from Roots: The Theoretical Basis for the Manipulation of Flux Data Obtained by the Cylindrical Platinum Electrode Technique (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 35 (1975), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A résumé is given of the cylindrical platinum electrode technique for measuring the rate of oxygen release from the submerged roots of intact plants.Methods are then described for manipulating the oxygen flux data to quantify the following root characteristics: total effective internal diffusional resistance, non-metabolic (pore-space) resistance, internal apical oxygen concentration, effective diffusion coefficient of internal transport and fractional porosity, and the respiratory contribution to internal transport. The diffusional resistance of the root wall is discussed and the method formerly suggested for converting low temperature flux data to the appropriate room temperature values (Armstrong 1971) is revised. Finally, suggestions are made for overcoming the difficulties encountered in using flux data for comparative work if the roots differ in their apical radii.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1975.tb03861.x
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  • 8
    Electronic Resource
    Electronic Resource
    Heterogeneous distributions of Escherichia coli O157 within naturally infected bovine faecal pats (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 244 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Escherichia coli O157 is an important human pathogen for which cattle are considered a reservoir. This paper describes and models the variation in counts of E. coli O157 that exists within individual bovine faecal pats. The presence and concentration of E. coli O157 in faecal samples was determined using a combination of direct spiral plating followed by a more sensitive isolation procedure. The data were modelled using multilevel random effect models, in which the random effects were allowed to be correlated to allow for the fact that pooled and individual samples come from the same pat. Up to a two log difference in the concentration of E. coli O157 was demonstrated in samples from different areas within a faecal pat. Pooling of individual samples from throughout the faecal pat and processing it as one composite sample allows this heterogeneity to be overcome.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.01.056
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  • 9
    Electronic Resource
    Electronic Resource
    Mercury levels in freshwater fish of the state of South Carolina (1977)
    Springer
    Bulletin of environmental contamination and toxicology 17 (1977), S. 82-89 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary Samples of fish from freshwater sources of rivers, lakes and ponds all over the state of South Carolina were collected during the Summer of 1974 and 1975. The fish collected were Bass,A Bluegill, Redbreast, Catfish, Shad, Carp, Crappie, Mudfish and Pike. Samples were analyzed using the flameless atomic absorption procedure outlined by Hatch and Ott, and Uthe et al as modified for use with Perkin-Elmer, Coleman MAS-50 mercury analyzer. Triplicate samples of fish tissue were analyzed by wet digestion method. The mean mercury levels in ppb were determined for baseline mercury levels. A significant finding of this report is that those species for which fish of widely differing weights were analyzed, larger fish had higher mercury levels. Mercury levels exceeding the U.S. Food and Drug Administration guideline of 500 ppb for fish tissues have been found in the Mudfish from Edisto River and Pike fish from Lake Murray. Higher levels of mercury occurred in the highly vascularized blood tissues of liver and kidney than in muscle. Carnivorous and bottom-feeding fishes are the most reliable indicators of mercury pollution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685266
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  • 10
    Electronic Resource
    Electronic Resource
    Effects of carbon monoxide on insects (1977)
    Springer
    Bulletin of environmental contamination and toxicology 17 (1977), S. 98-104 
    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/BF01685268
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