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  • 1
    Electronic Resource
    Electronic Resource
    Pressure Tuning Voltammetry. Reaction Volumes for Electron Transfer in Cytochrome c and Ruthenium- Modified Cytochromes c. [Erratum to document cited in CA122:154526] (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 7582-7582 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00133a047
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  • 2
    Electronic Resource
    Electronic Resource
    Pressure Tuning Voltammetry. Reaction Volumes for Electron Transfer in Cytochrome c and Ruthenium-Modified Cytochromes c (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 2600-2605 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00114a024
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  • 3
    Electronic Resource
    Electronic Resource
    Vacuum Filtration of Sewage Sludge (1943)
    [s.l.] : Nature Publishing Group
    Nature 152 (1943), S. 249-249 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] VACUUM nitration of sewage sludge, particularly surplus activated sludge from the activated sludge process of sewage treatment, is a well-established process, particularly in the United States, for dewatering sludge prior to drying and incineration or preparation for use as fertilizer or ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/152249c0
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  • 4
    Electronic Resource
    Electronic Resource
    Genetic subdivision within the eastern Australian population of the sea anemoneActinia tenebrosa (1991)
    Springer
    Marine biology 109 (1991), S. 379-390 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract An electrophoretic survey of allozyme variation revealed substantial genetic differentiation within the eastern Australian population ofActinia tenebrosa. This differentiation appears to reflect the effects of both asexual reproduction and limited gene flow among local populations separated by up to 1050 km. Variation was assessed within groups of 27 to 55 adults sampled between September 1985 and December 1988 collected from small areas of shore within each of 24 local populations. All individuals were collected from stable rock platforms, with the exception of Boulder Bay, where some sea anemones were removed from small mobile boulders. High levels of variability were detected for each of seven enzyme-encoding loci. The patterns of genotypic variation detected imply that local populations are maintained by predominantly asexually generated recruitment. Levels of multi-locus genotypic diversity within samples were consistently less than 50% of the level expected for sexual reproduction with free recombination. This was reflected by the detection of relatively low numbers of multi-locus genotypes and significant departures from expectations for single-locus Hardy-Weinberg equilibria within 17 of the 24 local populations. Standardised genetic variances (F ST ), calculated from the genotypes of all individual adults were typically much greater than those expected for marine organisms with widely dispersed larvae. The former values were reduced, but were still extremely large when “clonal” genotype frequencies were substituted into the calculation. These data imply that although widely dispersed larvae may be an important source of initial colonists, levels of gene flow among established local populations are low. Furthermore, cluster analysis revealed a clear subdivision of the population into northern and southern groups. However, this subdivision was largely explained by strong clinal variation at a GPI-encoding locus. For this locus, allele frequencies ranged from fixation of the A allele in samples from the 12 most northern sites to near fixation of the alternative B allele in southern samples. Subdivision of the eastern Australian population is consistent with the predicted off-shore movement of the Eastern Australian Current close to the border between Victoria and New South Wales. However, the split into northern and southern regions, as evidenced by the variation forGpi, could reflect patterns of gene flow and/or other factors such as natural selection or the recent patterns of colonisation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01313503
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  • 5
    Electronic Resource
    Electronic Resource
    Calcium Supplementation Suppresses Bone Resorption in Early Postmenopausal Women (1998)
    Springer
    Calcified tissue international 62 (1998), S. 8-12 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Calcium supplementation — Bone resorption — Calcium absorption.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. In order to establish whether calcium supplementation suppresses bone resorption in early postmenopausal women and whether any response is related to calcium absorption status, we studied 22 healthy women (median age 52 years) all within 5 years of the menopause. Urine was collected between 9.00 p.m. and 9.00 a.m., and 9.00 a.m. and 9.00 p.m., (2 days) and a fasting blood and spot urine sample was obtained at 9 a.m. On the first day, 5 μCi of 45Ca in 250 ml water with 20 mg calcium carrier as the chloride was given at 9.00 a.m. and a further blood sample was obtained at 10.00 a.m. to measure calcium absorption. A 1 g calcium load was given at 9.00 p.m., immediately before the second 24-hour urine collection. There was a rise in plasma ionized calcium (1.18 ± 0.010 mmol/liter versus 1.21 ± 0.011 mmol/liter, P 〈 0.01) and a fall in plasma PTH (4.2 ± 0.34 pmol/liter versus 3.5 ± 0.31 pmol/liter, P 〈 0.01) from baseline after the calcium load, and a trend for the magnitude of the change in PTH to be inversely related to calcium absorption (r =−0.33, P= 0.13). In the fasting spot urine samples, there were falls in hydroxyproline (OHPr/Cr; 14.6 ± 0.71 versus 12.6 ± 0.83, P 〈 0.001), pyridinoline (Pyr/Cr; 75 ± 2.8 versus 70 ± 3.5, P 〈 0.05), and deoxypyridinoline (Dpd/Cr; 22.7 ± 1.2 versus 19.5 ± 1.1, P 〈 0.005) after the calcium load. The calcium load suppressed urinary Dpd/Cr between 9.00 p.m. and 9.00 a.m. (P 〈 0.005), but not between 9.00 a.m. and 9.00 p.m. We conclude that acute administration of a 1 g calcium load suppresses bone resorption in early postmenopausal women, probably by decreasing PTH secretion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002239900385
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  • 6
    Electronic Resource
    Electronic Resource
    Inheritance of Milking Capacity (1932)
    [s.l.] : Nature Publishing Group
    Nature 129 (1932), S. 868-868 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE standard errors of the correlation coefficients 0.026 from 721 pairs and 0.112 from 715 pairs are almost exactly equal, at 0.037. Thus the difference 0.086 is 1.64 times its standard error, and treating this as anormal deviate it appears that a difference of this size, or greater, would ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/129868a0
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  • 7
    Electronic Resource
    Electronic Resource
    Tables for Statisticians (1939)
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 788-788 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN my review of “Statistical Tables”, by Fisher and Yates (NATURE, September 23, p. 533), I referred to the “interesting innovation of providing mean differences for half the interval only”. Dr. L. J. Comrie has pointed out to me that this practice is followed in E. V. Huntington's “Four Place ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/144788a0
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  • 8
    Electronic Resource
    Electronic Resource
    Inhibition of Bone Resorption by Divided-Dose Calcium Supplementation in Early Postmenopausal Women (2000)
    Springer
    Calcified tissue international 67 (2000), S. 440-442 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Calcium supplementation — Bone resorption — Postmenopausal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. We have previously shown that a calcium (Ca) supplement of 1000 mg given in the evening reduces the overnight and early morning, but not the daytime, excretion of bone resorption markers in postmenopausal women within five years of the menopause. In the present study, we have looked at the effect of splitting the Ca into two doses of 500 mg each given in the morning and evening. We studied 19 healthy women (median age 53 years) who were all within 5 years of the menopause. On the 2 study days, urine was collected from 9 a.m. to 9 p.m. (day collection), and from 9 p.m. to 9 a.m. (night collection); a further fasting (spot) urine sample was obtained at 9 a.m. at the end of the night collection. The first day was a control day; on the second day the subjects ingested 500 mg Ca as the carbonate at 9 a.m. and 9 p.m. We measured pyridinoline cross-links excretion in all the samples, as well as hydroxyproline in the fasting urine. The Ca supplements lowered urinary excretion of the markers during the day (P 〈 0.01), had only a marginal effect during the night, but reduced excretion significantly in the fasting urine (P 〈 0.001). In the whole 24-hour period, the falls in resorption markers were small but comparable to those seen after the ingestion of 1 g of Ca in the evening. We conclude that the acute administration of 0.5 g Ca in the morning and evening reduced the markers of bone resorption in early postmenopausal women during the day but not during the following night, whereas the single 1 g supplement had the reverse effect. Over the 24-hour period, there was nothing to choose between the two regimes. Women at this stage in their life cycle probably require a larger Ca supplement if they are not taking estrogen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002230001172
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  • 9
    Electronic Resource
    Electronic Resource
    Spatial variability of soil total C and N and their stable isotopes in an upland Scottish grassland (1997)
    Springer
    Plant and soil 196 (1997), S. 151-162 
    Details
    ISSN: 1573-5036
    Keywords: geostatistics ; grazing management ; 13-C ; 15-N ; resource patchiness ; ryegrass-clover pastures
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract As preparation for a below ground food web study, the spatial variability of three soil properties (total N, total C and pH) and two stable isotopes (δ13C and δ15N of whole soil) were quantified using geostatistical approaches in upland pastures under contrasting management regimes (grazed, fertilised and ungrazed, unfertilised) in Scotland. This is the first such study of upland, north maritime grasslands. The resulting patterns of variability suggest that to obtain statistically independent samples in this system, a sampling distance of ≥13.5 m is required. Additionally, temporal change (a decline of 1‰) was observed in whole soil δ15N for the grazed, fertilised plot. This may have been caused by new inputs of symbiotically-fixed atmospheric N2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004288610550
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  • 10
    Electronic Resource
    Electronic Resource
    Untersuchung von Wasser (1939)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 116 (1939), S. 189-193 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01358935
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