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  • Polymer and Materials Science  (284)
  • Humans  (116)
  • Cell & Developmental Biology  (110)
  • FLUID MECHANICS AND HEAT TRANSFER  (63)
  • Inorganic Chemistry  (56)
  • SOLAR PHYSICS  (48)
  • 1985-1989  (653)
  • 1980-1984
  • 1925-1929  (24)
  • 1988  (653)
  • 1926  (24)
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  • 1985-1989  (653)
  • 1980-1984
  • 1925-1929  (24)
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  • 1
    Electronic Resource
    Electronic Resource
    Crystallinities of copolymers of ethylene and 1-alkenes (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 26 (1988), S. 1271-1286 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Random copolymers of ethylene with 1-butene, 1-octene, and 1-octadecene have been prepared using a homogeneous vanadium-based catalyst system. Comonomer contents determined by 13C-NMR analysis of polymer solutions are in the range 1-10 mol%. Crystallinities were estimated by means of density measurements, x-ray diffraction, differential scanning calorimetry, laser Raman spectroscopy, and CPMAS 13C-NMR spectroscopy. The results are compared with those obtained for heterogeneous copolymers of ethylene containing 1-4 mol% 1-butene. As the comonomer content is increased, the crystallinity decreases. The dimension perpendicular to the 110 plane in orthorhombic crystallites decreases linearly with crystallinity. This decrease in crystallite size is accompanied by an increase in the size of the orthorhombic unit cell. For copolymers containing large amounts of 1-octene and 1-octadecene, a second crystalline form appears. Differences in estimates of crystallinity are discussed in terms of looser packing in highly branched copolymers and the extent to which the second crystalline form participates in the phase structure.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1988.090260611
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal behavior of cast polyurethane elastomers (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 35 (1988), S. 1803-1815 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Thermal properties like glass transition temperature (Tg), initial decomposition temperature (idt), integral procedural decomposition temperature (ipdt), and temperature at various % weight loss of a number of polyurethane systems are reported in this paper. Glass transition temperature was determined on TMA, and other thermal properties were determined by thermogravimetry. The experiments were designed to understand various factors such as length of chain extender moiety, flexibility of chain extender units by substitution of ether link in the diol chain, nature of bonds (unsaturation) in the extender unit, and nature of diisocyanates.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1988.070350708
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  • 3
    Electronic Resource
    Electronic Resource
    Consistent values of rate parameters in free radical polymerization systems (1988)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 26 (1988), S. 293-297 
    Details
    ISSN: 0887-6258
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1988.140260704
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  • 4
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    Absence of linkage of chromosome 21q21 markers to familial Alzheimer's disease (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-16
    Description: Alzheimer's disease is the most common form of dementia among the elderly population. Although the etiology is unknown, inheritance plays a role in the pathogenesis of the disease. Recent work indicates that an autosomal dominant gene for Alzheimer's disease is located on chromosome 21 at band q21. In the present study of a group of autopsy-documented kindreds, no evidence for linkage was found between familial Alzheimer's disease (FAD) and chromosome 21q21 markers (D21S1/D21S72 and the amyloid beta gene). Linkage to the D21S1/D21S72 locus was excluded at recombination fractions (theta) up to 0.17. Linkage to the amyloid gene was excluded at theta = 0.10. Apparent recombinants were noted in two families for the amyloid gene and in five families for the D21S1/D21S72 locus. These data indicate that FAD is genetically heterogeneous.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schellenberg, G D -- Bird, T D -- Wijsman, E M -- Moore, D K -- Boehnke, M -- Bryant, E M -- Lampe, T H -- Nochlin, D -- Sumi, S M -- Deeb, S S -- AG 00057/AG/NIA NIH HHS/ -- AG 05136/AG/NIA NIH HHS/ -- GM 15253/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1988 Sep 16;241(4872):1507-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neurology, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3420406" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Chromosome Mapping ; *Chromosomes, Human, Pair 21 ; Genetic Linkage ; Humans
    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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    PAPER CURRENT
  • 5
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    A larger spectrum of severe HIV-1--related disease in intravenous drug users in New York City (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-11-11
    Description: Increasing mortality in intravenous (IV) drug users not reported to surveillance as acquired immunodeficiency syndrome (AIDS) has occurred in New York City coincident with the AIDS epidemic. From 1981 to 1986, narcotics-related deaths increased on average 32% per year from 492 in 1981 to 1996 in 1986. This increase included deaths from AIDS increasing from 0 to 905 and deaths from other causes, many of which were infectious diseases, increasing from 492 to 1091. Investigations of these deaths suggest a causal association with human immunodeficiency virus (HIV) infection. These deaths may represent a spectrum of HIV-related disease that has not been identified through AIDS surveillance and has resulted in a large underestimation of the impact of AIDS on IV drug users and blacks and Hispanics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stoneburner, R L -- Des Jarlais, D C -- Benezra, D -- Gorelkin, L -- Sotheran, J L -- Friedman, S R -- Schultz, S -- Marmor, M -- Mildvan, D -- Maslansky, R -- New York, N.Y. -- Science. 1988 Nov 11;242(4880):916-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉AIDS Research Unit, New York City Department of Health, NY 10013.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3187532" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/complications/*epidemiology/microbiology ; Cause of Death ; Endocarditis/complications ; Hiv ; HIV Seropositivity ; Homosexuality ; Humans ; Male ; New York City ; Pneumonia/complications ; Substance-Related Disorders/*complications/epidemiology/mortality ; Tuberculosis/complications
    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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  • 6
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    Concerted nonsyntenic allelic loss in human colorectal carcinoma (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-08-19
    Description: Familial polyposis coli (FPC) is caused by an autosomal dominant gene on chromosome 5, and it has been proposed that colorectal cancer in the general population arises from loss or inactivation of the FPC gene, analogous to recessive tumor genes in retinoblastoma and Wilms' tumor. Since allelic loss can be erroneously scored in nonhomogeneous samples, tumor cell populations were first microdissected from 24 colorectal carcinomas, an additional nine cancers were engrafted in nude mice, and nuclei were flow-sorted from an additional two. Of 31 cancers informative for chromosome 5 markers, only 6 (19%) showed loss of heterozygosity of chromosome 5 alleles, compared to 19 of 34 (56%) on chromosome 17, and 17 of 33 (52%) on chromosome 18. Therefore, it appears that (i) FPC is a true dominant for adenomatosis but not a common recessive gene for colon cancer; and (ii) simple Mendelian models involving loss of alleles at a single locus may be inappropriate for understanding common human solid tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Law, D J -- Olschwang, S -- Monpezat, J P -- Lefrancois, D -- Jagelman, D -- Petrelli, N J -- Thomas, G -- Feinberg, A P -- New York, N.Y. -- Science. 1988 Aug 19;241(4868):961-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Michigan Medical School, Ann Arbor 48109.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2841761" target="_blank"〉PubMed〈/a〉
    Keywords: Adenocarcinoma/genetics ; Adenoma/genetics ; Adenomatous Polyposis Coli/*genetics ; *Alleles ; Animals ; Chromosomes, Human, Pair 17 ; Chromosomes, Human, Pair 18 ; Chromosomes, Human, Pair 5 ; Colonic Neoplasms/*genetics ; DNA, Neoplasm/analysis ; Genes, Dominant ; *Genetic Linkage ; Humans ; Mice ; Precancerous Conditions/genetics ; Rectal Neoplasms/*genetics
    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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  • 7
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    Type-restricted neutralization of molecular clones of human immunodeficiency virus (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-07-15
    Description: In a study of the immunologic significance of the genetic diversity present within single isolates of human immunodeficiency virus type 1 (HIV-1), the neutralization of viruses derived from molecular clones of the HIV-1 strain HTLV-IIIB by an extensive panel of sera was compared. Sera from HIV-1-infected patients and from goats immunized with polyacrylamide gel-purified HIV-1 envelope glycoprotein (gp120), native gp120, or gp120-derived recombinant peptides, showed marked heterogeneity in neutralizing activity against these closely related viruses. The change of a single amino acid residue in gp120 may account for such "clonal restriction" of neutralizing activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Looney, D J -- Fisher, A G -- Putney, S D -- Rusche, J R -- Redfield, R R -- Burke, D S -- Gallo, R C -- Wong-Staal, F -- New York, N.Y. -- Science. 1988 Jul 15;241(4863):357-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Viral Diseases, Walter Reed Army Institute of Research, Washington, DC 20307.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3388046" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Viral/*immunology ; Binding, Competitive ; Cloning, Molecular ; HIV/genetics/*immunology ; HIV Seropositivity/immunology ; Humans ; Molecular Sequence Data ; Neutralization Tests ; Oligopeptides/chemical synthesis/immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Autologous red cell agglutination assay for HIV-1 antibodies: simplified test with whole blood (1988)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1988-09-09
    Description: An antibody detection procedure based on agglutination of autologous red cells has been developed for samples of whole blood. A nonagglutinating monoclonal antibody to human red blood cells conjugated to a synthetic peptide antigen (in this case residues 579 to 601 of the HIV-1 envelope precursor, Arg-Ile-Leu-Ala-Val-Glu-Arg-Tyr-Leu-Lys-Asp-Gln-Gln-Leu-Leu-Gly-Ile-Trp- Gly-Cys - Ser-Gly-Lys) permitted the detection of antibodies to the human immunodeficiency virus type 1 (HIV-1) in 10 microliters of whole blood within 2 minutes. Agglutination was specifically inhibited by addition of synthetic peptide antigen but not by unrelated peptides. The frequency of false positive results was 0.1% with HIV-1 seronegative blood donors (n = 874). The false negative results were approximately 1% (n = 81). The autologous red cell agglutination test is potentially suitable for simple, rapid, qualitative screening for antibodies to a variety of antigens of medical and veterinary diagnostic significance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kemp, B E -- Rylatt, D B -- Bundesen, P G -- Doherty, R R -- McPhee, D A -- Stapleton, D -- Cottis, L E -- Wilson, K -- John, M A -- Khan, J M -- New York, N.Y. -- Science. 1988 Sep 9;241(4871):1352-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Melbourne, Repatriation General Hospital, Victoria, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3413497" target="_blank"〉PubMed〈/a〉
    Keywords: *Agglutination Tests ; Antibodies, Viral/*analysis ; Antibody Specificity ; Glycoproteins/immunology ; HIV/*immunology ; HIV Seropositivity/*diagnosis ; Humans ; Oligopeptides/immunology ; Retroviridae Proteins/immunology ; Viral Envelope Proteins/immunology
    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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  • 9
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    Dynamical evolution of a solar coronal magnetic field arcade (1988)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Calculations of the long-term dynamical evolution of a solar coronal magnetic field arcade which is subjected to shearing photospheric flows are presented. The evolution is obtained by numerical solution of a subset of the resistive magnetohydrodynamic equations. For a simplified model of the bipolar magnetic field observed in the solar corona, it is found that photospheric flow produces a slow evolution of the magnetic field, with a buildup of magnetic energy. For certain photospheric shear profiles, the field configuration produced is linearly unstable to an ideal magnetohydrodynamic mode when the shear exceeds a critical value. The nonlinear evolution of this instability shows the spontaneous formation of current sheets. Reconnection of the magnetic field produces a rapid release of magnetic energy. The major fraction of the energy is dissipated resistively, while a small fraction is converted into kinetic energy of an ejected plasmoid. The relevance of these results to two-ribbon flares is discussed.
    Keywords: SOLAR PHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 328; 830-847
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
    Electronic Resource
    Electronic Resource
    Polymer compatibility and interpolymer association in the poly(acrylic acid)-polyacrylamide-water ternary system (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 35 (1988), S. 707-716 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Polyacrylamide and poly(acrylic acid) form a water-insoluble phase when solutions of the two having concentrations that are not too low are mixed. The insoluble complex contains nearly stoichiometric 1 : 1 ratios of acrylamide and acrylic acid. The phase behavior of the ternary system was studied as a function of the degree of neutralization, α, of poly(acrylic acid). The complex is not formed when α is high. The formation of the complex was studied by measurement of pH increases observed when poly(acrylic acid) was titrated with polyacrylamide to infer a degree of linkage, θ, between the two polymers. A Hill plot of the data showed that the association was cooperative when the molecular weight was high.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1988.070350311
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