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  • 1
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    Chytrid evolutionary genomics [Evolution] (2013)
    National Academy of Sciences
    Details
    Publication Date: 2013-06-05
    Description: Understanding the evolutionary history of microbial pathogens is critical for mitigating the impacts of emerging infectious diseases on economically and ecologically important host species. We used a genome resequencing approach to resolve the evolutionary history of an important microbial pathogen, the chytrid Batrachochytrium dendrobatidis (Bd), which has been implicated in...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 2
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    Pyrolysis mass spectrometry of complex organic materials (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-10-19
    Description: Pyrolysis mass spectrometry in combination with computerized multivariate statistical analysis enables qualitative and quantitative analysis of nonvolatile organic materials containing molecular assemblies of a complexity and size far beyond the capabilities of direct mass spectrometry. The state of the art in pyrolysis mass spectrometry techniques is illustrated through specific applications, including structural determination and quality control of synthetic polymers, quantitative analysis of polymer mixtures, classification and structural characterization of fossil organic matter, and nonsupervised numerical extraction of component patterns from complex biological samples.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meuzelaar, H L -- Windig, W -- Harper, A M -- Huff, S M -- McClennen, W H -- Richards, J M -- New York, N.Y. -- Science. 1984 Oct 19;226(4672):268-74.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6484572" target="_blank"〉PubMed〈/a〉
    Keywords: Biochemical Phenomena ; Biochemistry ; Chemical Phenomena ; Chemistry ; Coal ; Enterobacteriaceae/analysis/isolation & purification ; Hot Temperature ; Mass Spectrometry/*methods ; Polymers
    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
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    Rectal insemination modifies immune responses in rabbits (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-04-27
    Description: Weekly deposition of pooled rabbit semen into the rectum in healthy male rabbits resulted in the appearance of immune complexes and antibodies to sperm and to peripheral blood lymphocyte antigens. It also led to a decreased ability to mount a humoral immune response to T lymphocyte-dependent antigens, keyhole limpet hemocyanin, and sheep red blood cells. These findings suggest that repeated rectal deposition of semen may compromise some aspects of the immune system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Richards, J M -- Bedford, J M -- Witkin, S S -- CA 35018/CA/NCI NIH HHS/ -- HD16587/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1984 Apr 27;224(4647):390-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6608789" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/analysis ; *Antibody Formation ; *Antigen-Antibody Complex ; Erythrocytes/immunology ; *G(M1) Ganglioside ; Glycosphingolipids/immunology ; Hemocyanin/immunology ; Immunoglobulins/analysis ; *Insemination ; Killer Cells, Natural/immunology ; Lymphocytes/immunology ; Male ; Rabbits ; *Rectum ; Semen/*immunology ; Spermatozoa/*immunology ; T-Lymphocytes/immunology ; Time Factors
    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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  • 4
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    Mate-guarding by male mandrills (Mandrillus sphinx) is associated with female MHC genotype (2016)
    Oxford University Press
    Details
    Publication Date: 2016-11-26
    Description: Female choice for male major histocompatibility complex (MHC) genotype has been widely tested, but the relationship between male mating strategies and female MHC genotype has received far less attention. Moreover, few studies of MHC-associated mate choice test for the fitness effects underlying such choice. We examined mate-guarding by male mandrills, a species with intense male–male competition and female offspring care. We developed a statistical model based on 10 years of observations to describe how the probability a female is mate-guarded varies across her sexual cycle, among cycles and among females. We accounted for female rank, parity, and maternal relatedness. We then tested whether the occurrence of mate-guarding is influenced by 1) MHC dissimilarity, 2) female MHC diversity, and 3) specific female MHC genotypes. Finally, we tested for associations between MHC variables and the ratio of neutrophils to lymphocytes in blood samples taken during routine captures. The best-fit models included either MHC dissimilarity (males were more likely to mate-guard more dissimilar females, and there was some evidence of preference for intermediate MHC dissimilarity) or a specific MHC supertype. Four of 11 supertypes investigated were influential and one had a strong negative influence on mate-guarding. We found some evidence that the MHC genotype that attracted the least mate-guarding was disadvantageous in terms of immune function. However, we did not find evidence that MHC diversity was related to immune function. These results suggest that highly competitive males modify their mating behavior based on female MHC genotype, and a possible fitness benefit to mate choice for specific genotypes.
    Print ISSN: 1045-2249
    Electronic ISSN: 1465-7279
    Topics: Biology
    Published by Oxford University Press
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of manufacturing defects on the mechanical properties of carbon fibre reinforced polyethersulphone laminates (1989)
    Springer
    Journal of materials science 24 (1989), S. 584-589 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The effects of defects on the mechanical properties of carbon fibre reinforced polyethersulphone laminates have been measured. The defects studied were cut fibre plies, omission of polymer films and local delamination produced by the inclusion of foreign matter. Of these it was found that only cut plies had a significant detrimental effect on the strength of a laminate. For specimens with two cut plies, the failure stress, tensile, flexural and compressive in the remaining continuous plies was the same as in the defect-free material, provided that the cut plies were widely separated. However the failure stresses were 15–18% lower in the continuous plies in the specimens containing two cut plies which were more closely spaced and in specimens containing four cut plies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01107446
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of discontinuous plies on the tensile strength of CFRP laminates (1985)
    Springer
    Journal of materials science 4 (1985), S. 203-206 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00728077
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  • 7
    Electronic Resource
    Electronic Resource
    Thermal properties of carbon-filled silicone rubbers for use in thermal expansion moulding (1990)
    Springer
    Journal of materials science 25 (1990), S. 721-724 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The pressure produced by the thermal expansion of silicone rubber on heating when enclosed in a steel mould can be used to fabricate complex shaped reinforced plastic components. To improve the thermal conductivity of the rubber, the effects have been studied of adding between 25% and 30% by volume of carbon, both as chopped carbon fibre and carbon black. Measurements have been made of the thermal conductivity between 30° and 170° C, and of the thermal expansion between 23° and 140° C. It was found that the chopped fibres were more efficient than the carbon black in increasing the thermal conductivity, giving approximately 100% increase in conductivity over that of the pure rubber for a 30% loading. The addition of carbon led to a decrease in the thermal expansion of the rubber by an order of 30%. The bulk modulus of the rubber was found to increase slightly, by less than 10%, when the carbon was added.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00714100
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  • 8
    Electronic Resource
    Electronic Resource
    Years cited: An alternative measure of scientific accomplishment (1991)
    Springer
    Scientometrics 20 (1991), S. 427-438 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Citation counts often are used to measure scientific accomplishment. It is very difficult, however, to compute accurate citation counts in research where one has a list of scientists but not their complete bibliographies. At the same time, procedures are available that permit informed judgments about whether given scientists were cited at all in given years. The possibility of such judgments suggested that the number of years in which scientists were cited might be used as an alternative measure of scientific accomplishment. This possibility was explored in two studies, one based on 2,713 population scientists and the other on 135 articles published in the journalFertility and Sterility. Years cited was easy to compute, and had good descriptive statistics, satisfactory generalizability coefficients, high correlations with total citation counts, and distributions little influenced by outliers. These results supported the appropriateness of the years cited measure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02019763
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  • 9
    Electronic Resource
    Electronic Resource
    Structure of specialization among American population scientists (1984)
    Springer
    Scientometrics 6 (1984), S. 425-432 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Studies of journal citation patterns suggest that specialty areas within disciplines may be the most appro priate structural units for understanding the social organization of science. Citation studies necessarily are limited to scientists who publish, however, and studies of all members of particular disciplines would provide more general specialty structure data. Accordingly, this research applied factor analytic procedures previously used in studies of the structure of specialization among psychologists to all members of the Population Association of America. Four principal components derived from the self-designated specialties of these population scientist were rotated to a final solution by the varimax procedure and were interpreted as measuring, respectively,Social Emphasis, Geographic Emphasis, Formal Emphasis, andEpidemiological Emphasis. These results partially confirm the distinction sometimes made by population scientists between social demography and formal demography, but suggest this typology is incomplete. The results also illustrate techniques that could provide a useful alternative to citation analysis for researchers studying specialty structures in other disciplines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02025829
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  • 10
    Electronic Resource
    Electronic Resource
    Exact analytical solutions and close approximations to the depth distribution function in AES and XPS (1993)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 20 (1993), S. 271-275 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: This paper presents an analysis of the form of the depth distribution function (DDF) for one of the only scattering cross-sections for which a solution to the Boltzmann transport equation (BTE) is readily available. In doing so we demonstrate how different approximations lead to DDFs of differing complexity. The possibility of achieving the requirement for quantitative AES and XPS of a simple yet accurate DDF is discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740200402
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