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  • 1
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    GENERALIZED SOLID-ANGLE THEORY FOR REAL POLYTOPES (2011)
    Oxford University Press
    Details
    Publication Date: 2011-11-24
    Description: We extend some theorems from the context of solid-angle sums over rational polytopes to the context of solid-angle sums over real polytopes. Moreover, we also consider any real dilation parameter, as opposed to the traditional integer dilation parameters. One of the main results is an extension of Macdonald's solid-angle quasi-polynomial for rational polytopes to a real analytic function of the dilation parameter, for any real convex polytope. Consequently, we find an extension of Macdonald's reciprocity law for real dilation parameters, over real polytopes.
    Print ISSN: 0033-5606
    Electronic ISSN: 1464-3847
    Topics: Mathematics
    Published by Oxford University Press
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  • 2
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    Altering genotype and phenotype by DNA-mediated gene transfer (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1980-09-19
    Description: Transformation, or DNA-mediated gene transfer, permits the introduction of new genetic information into a cell and frequently results in a change in phenotype. The transforming DNA is ultimately integrated into a recipient cell chromosome. No unique chromosomal locations are apparent, different lines contain the transforming DNA on different chromosomes. Expression of transformed genes frequently results in the synthesis of new polypeptide products which restore appropriate mutant cells to the wild-type phenotype. Thus transformation provides an in vivo assay for the functional role of DNA sequence organization about specific genes. Transforming genes coding for selectable functions, such as adenine phosphoribosyltransferase or thymidine kinase, have now been isolated by utilizing transformation in concert with molecular cloning. Finally, transformation may provide a general approach to the analysis of complex heritable phenotypes by permitting the distinction between phenotypic changes without concomitant changes in DNA and functional genetic rearrangements.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pellicer, A -- Robins, D -- Wold, B -- Sweet, R -- Jackson, J -- Lowy, I -- Roberts, J M -- Sim, G K -- Silverstein, S -- Axel, R -- CA 16346/CA/NCI NIH HHS/ -- CA 17477/CA/NCI NIH HHS/ -- CA 23767/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1980 Sep 19;209(4463):1414-22.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7414320" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Phosphoribosyltransferase/*genetics ; Cloning, Molecular/methods ; DNA/*genetics ; *DNA, Recombinant ; Genes ; Genotype ; Mutation ; Pentosyltransferases/*genetics ; Phenotype ; Recombination, Genetic ; Selection, Genetic ; Thymidine Kinase/*genetics ; *Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    Determining Densities of Solutions of Gases in Liquids under Pressure. (1961)
    s.l. : American Chemical Society
    Journal of chemical & engineering data 6 (1961), S. 531-532 
    Details
    ISSN: 1520-5134
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/je60011a014
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  • 4
    Electronic Resource
    Electronic Resource
    Biosynthesis of bacterial menaquinones (vitamins K2) (1971)
    s.l. : American Chemical Society
    Biochemistry 10 (1971), S. 3069-3078 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00792a014
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  • 5
    Electronic Resource
    Electronic Resource
    Suspended particulates in the Irish Sea and feeding conditions for fish larvae (1994)
    Springer
    Marine biology 118 (1994), S. 7-15 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The size distributions (2 to 160 μm equivalent spherical diameter) of suspended particulate material sampled on two cruises along a transect in the Irish Sea in 1988 are described in relation to hydrographic conditions, chlorophylla concentration and carbon to nitrogen ratios. Particulates were more abundant and larger size modes in the distribution were more evident, in the upper mixed layer of stratified water than in areas where the water column was fully mixed. The detrital content was estimated at 52% of total particulate matter above the thermocline in stratified regions and at around 97% at mixed water sites. In stratified regions the predominance of larger sized phytoplankton and lower levels of detritus is argued to support a more direct and efficient transfer of energy to fish larvae via larger sizes of copepods. Conversely, in mixed areas of high detrital loading the smaller size spectrum of particulates incorporates a less efficient transfer of energy through bacterial cycling and smaller copepods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00699214
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  • 6
    Electronic Resource
    Electronic Resource
    Calorific, ash, carbon and nitrogen content in relation to length and dry weight of Parathemisto gaudichaudi (Amphipoda: Hyperiidea) in the North East Atlantic Ocean (1979)
    Springer
    Marine biology 52 (1979), S. 247-252 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The calorific, ash, carbon and nitrogen content, length and dry weight were determined for the hyperiid Parathemisto gaudichaudi (Guerin). Regression equations for all these variables were determined so that they can be estimated by calculation from measurements of length of the hyperiid. Mean values for total nitrogen and carbon were 7.79±0.85% and 36.80±4.18% of the dry weight, respectively. The carbon to calorific equivalent for P. gaudichaudi was 10.37 kcal g-1 carbon (9.13 kcal g-1 when corrected for nitrogen). The calorific value for ash-free adult P. gaudichaudi was 5.138 kcal g-1±1.309 (4.510 kcal g-1 when corrected for nitrogen). This large variation in the calorific content (coefficient of variation of 25.84%) can be accounted for largely by variation in the ash content (coefficient of variation of 21.84%). The calorific value determined for P. gaudichaudi is similar to that measured for other carnivorous crustaceans and adds support to the hypothesis that animals with high calorific content have a low fecundity and an energy-rich store which can be used as a buffer during unfavourable periods in their life.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00398138
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  • 7
    Electronic Resource
    Electronic Resource
    Effects of preservation on wet weight, dry weight, nitrogen and carbon contents of Calanus helgolandicus (Crustacea: Copepoda) (1982)
    Springer
    Marine biology 71 (1982), S. 271-281 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The lengths, wet and dry weights, nitrogen and carbon contents of fresh, frozen and formaldehyde-fixed specimens of Calanus helgolandicus (Claus) were determined. Samples were collected during May 1980 in the Celtic Sea. Individual Copepodite Stages 3, 4, 5, and Adult Male and Female Stage 6 were measured and analysed, and 36 linear regression equations derived for these variables together with mean values, standard deviations and 95% confidence limits. The range of nitrogen values in the fresh material, expressed as a percentage of dry weight, ranged from 8.08%±0.80 (Copepodite Stage 3) to 10.89%±0.27 (adult female); carbon values changed from 41.6%±3.05 (mean ±95% confidence limits) for Copepodite Stage 3 to 50.97%±2.63 in Copepodite Stage 5. The adult females had a high nitrogen and relatively low carbon content, while the converse was true for Stage 5 copepodites. There was a loss of dry weight from the frozen samples (57%) and the fixed samples (38%) compared with the mean of the fresh dry weight of all stages. The material lost from the copepods was rich in nitrogen, thus, artificially high percentage carbon values were determined from the frozen and fixed samples (52.0 to 60.3% and 44.7 to 58.5%, respectively).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397044
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  • 8
    Electronic Resource
    Electronic Resource
    1-N-methyl-(6E)-(2-methylpropylidene)-(3Z)-3-(phenylmethylene)-2,5-piperazin edione, a metabolite from Streptomyces albus
    Amsterdam : Elsevier
    Phytochemistry 23 (1984), S. 200-201 
    Details
    ISSN: 0031-9422
    Keywords: 2,5-piperazinedione derivatives. ; Streptomyces albus
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0031-9422(84)83115-5
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  • 9
    Electronic Resource
    Electronic Resource
    Structure of N-acetyl-L-homocarnosine monohydrate (1993)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 49 (1993), S. 495-497 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270192009119
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  • 10
    Electronic Resource
    Electronic Resource
    (+)-7,9-O,O-Maleoylretronecine, C12H13NO4: a pyrrolizidine alkaloid analogue (1988)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 1847-1848 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270188007462
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