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  • American Association for the Advancement of Science (AAAS)  (13)
  • American Meteorological Society (AMS)
  • 1990-1994  (13)
  • 1
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    A room-temperature molecular/organic-based magnet (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: The reaction of bis(benzene)vanadium with tetracyanoethylene, TCNE, affords an insoluble amorphous black solid that exhibits field-dependent magnetization and hysteresis at room temperature. The critical temperature could not be estimated as it exceeds 350 kelvin, the thermal decomposition temperature of the sample. The empirical composition of the reported material is V(TCNE)x.Y(CH(2)Cl(2)) with x approximately 2 and Y approximately 1/2. On the basis of the available magnetic and infrared data, threedimensional antiferromagnetic exchange of the donor and acceptor spins resulting in ferrimagnetic behavior appears to be the mode of magnetic coupling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Manriquez, J M -- Yee, G T -- McLean, R S -- Epstein, A J -- Miller, J S -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1415-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17772914" target="_blank"〉PubMed〈/a〉
    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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  • 2
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    Spiral waves in chemistry and biology (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Epstein, I R -- New York, N.Y. -- Science. 1991 Apr 5;252(5002):67.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17739074" target="_blank"〉PubMed〈/a〉
    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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  • 3
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    Prenylated proteins: the structure of the isoprenoid group (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-01-19
    Description: The mevalonate-derived portion of a prenylated protein from Chinese hamster ovary cells has been established as diterpenoid (C20). This group is linked to a carboxyl-terminal cysteine as a thioether. It was removed from the protein by hydrazinolysis followed by Raney nickel desulfurization, and the resulting hydrocarbon fraction was analyzed by gas chromatography-mass spectrometry.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rilling, H C -- Breunger, E -- Epstein, W W -- Crain, P F -- GM 29812/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Jan 19;247(4940):318-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Utah, Salt Lake City 84112.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2296720" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cricetinae ; Diterpenes/*metabolism ; Female ; Gas Chromatography-Mass Spectrometry ; Mevalonic Acid/metabolism ; Molecular Structure ; Ovary ; Protein Precursors/metabolism ; *Protein Processing, Post-Translational ; Proteins/*metabolism
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Molecular genetics of epidermolysis bullosa (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-05-18
    Description: Blisters following minor trauma characterize epidermolysis bullosa, a group of hereditary diseases of the skin. In the simplex type, epidermal basal cells are fragile, and mutations of genes encoding keratin intermediate filament proteins underlie that fragility. In the dystrophic types, the causative mutation appears to be in the gene encoding type VII collagen, which is the major component of anchoring fibrils. These recent findings afford solid evidence that at least one function of the cytoskeletal intermediate filament network is the provision of mechanical stability and that anchoring fibrils indeed do anchor the epidermis to the underlying dermis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Epstein, E H Jr -- New York, N.Y. -- Science. 1992 May 8;256(5058):799-804.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of California, San Francisco, San Francisco General Hospital 94110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1375393" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosomes, Human, Pair 12 ; Chromosomes, Human, Pair 17 ; Cytoskeleton/ultrastructure ; Epidermolysis Bullosa/*genetics/pathology ; Humans ; Keratins/*genetics ; Multigene Family ; Skin/pathology
    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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  • 5
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    Myoblast therapy (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-08-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Epstein, H F -- Fischman, D A -- Bader, D -- Changeux, J P -- Buckhold, K -- Ordahl, C P -- Hoffman, E -- Kedes, L H -- Konieczny, S -- Leinwand, L A -- New York, N.Y. -- Science. 1992 Aug 7;257(5071):738.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1496388" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Child ; Humans ; Male ; Muscles/*transplantation ; Muscular Dystrophies/*surgery ; Transplantation/adverse effects
    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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  • 6
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    Epidermolysis bullosa simplex: evidence in two families for keratin gene abnormalities (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-02
    Description: Epidermolysis bullosa simplex (EBS) is characterized by skin blistering due to basal keratinocyte fragility. In one family studied, inheritance of EBS is linked to the gene encoding keratin 14, and a thymine to cytosine mutation in exon 6 of keratin 14 has introduced a proline in the middle of an alpha-helical region. In a second family, inheritance of EBS is linked to loci that map near the keratin 5 gene. These data indicate that abnormalities of either of the components of the keratin intermediate filament heterodipolymer can impair the mechanical stability of these epithelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bonifas, J M -- Rothman, A L -- Epstein, E H Jr -- R01-AR28069/AR/NIAMS NIH HHS/ -- R01-AR39953/AR/NIAMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1202-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Dermatology, San Francisco General Hospital, University of California 94110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1720261" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Chromosomes, Human, Pair 12 ; Chromosomes, Human, Pair 17 ; Epidermolysis Bullosa Simplex/*genetics ; Genes ; Genetic Linkage ; Humans ; Keratins/*genetics ; Molecular Sequence Data ; Oligonucleotides/chemistry ; Pedigree ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length
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  • 7
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    Modeling of turing structures in the chlorite--iodide--malonic Acid--starch reaction system (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: Recent experiments on the chlorite-iodide-malonic acid-starch reaction in a gel reactor give the first evidence of the existence of the symmetry breaking, reaction-diffusion structures predicted by Turing in 1952. A five-variable model that describes the temporal behavior of the system is reduced to a two-variable model, and its spatial behavior is analyzed. Structures have been found with wavelengths that are in good agreement with those observed experimentally. The gel plays a key role by binding key iodine species, thereby creating the necessary difference in the effective diffusion coefficients of the activator and inhibitor species, iodide and chlorite ions, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lengyel, I -- Epstein, I R -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):650-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17741380" target="_blank"〉PubMed〈/a〉
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  • 8
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    Molecular analysis of protein assembly in muscle development (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-01
    Description: The challenge presented by myofibril assembly in striated muscle is to understand the molecular mechanisms by which its protein components are arranged at each level of organization. Recent advances in the genetics and cell biology of muscle development have shown that in vivo assembly of the myofilaments requires a complex array of structural and associated proteins and that organization of whole sarcomeres occurs initially at the cell membrane. These studies have been complemented by in vitro analyses of the renaturation, polymerization, and three-dimensional structure of the purified proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Epstein, H F -- Fischman, D A -- AR-32147/AR/NIAMS NIH HHS/ -- GM-33223/GM/NIGMS NIH HHS/ -- HL-42267/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1991 Mar 1;251(4997):1039-44.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1998120" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/physiology ; Amino Acid Sequence ; Animals ; Macromolecular Substances ; Molecular Sequence Data ; Morphogenesis ; Muscle Contraction ; *Muscle Development ; Muscle Proteins/*physiology ; Myofibrils/*physiology ; Myosins/physiology ; Polymers ; Sarcolemma/physiology
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  • 9
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    Transient turing structures in a gradient-free closed system (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-01-22
    Description: Transient, symmetry-breaking, spatial patterns were obtained in a closed, gradient-free, aqueous medium containing chlorine dioxide, iodine, malonic acid, and starch at 4 degrees to 5 degrees C. The conditions under which these Turing-type structures appear can be accurately predicted from a simple mathematical model of the system. The patterns, which consist of spots, stripes, or both spots and stripes, require about 25 minutes to form and remain stationary for 10 to 30 minutes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lengyel, I -- Kadar, S -- Epstein, I R -- New York, N.Y. -- Science. 1993 Jan 22;259(5094):493-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17734167" target="_blank"〉PubMed〈/a〉
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  • 10
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    Water on Mars: Clues from Deuterium/Hydrogen and Water Contents of Hydrous Phases in SNC Meteorites (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-01
    Description: Ion microprobe studies of hydrous amphibole, biotite, and apatite in shergottite-nakhlite-chassignite (SNC) meteorites, probable igneous rocks from Mars, indicate high deuterium/hydrogen (D/H) ratios relative to terrestrial values. The amphiboles contain roughly one-tentn as much water as expected, suggesting that SNC magmas were less hydrous than previously proposed. The high but variable D/H values of these minerals are best explained by postcrystallization D enrichment of initially D-poor phases by martian crustal fluids with near atmospheric D/H (about five times the terrestrial value). These igneous phases do not directly reflect the D/H ratios of martian "magmatic" water but provide evidence for a D-enriched martian crustal water reservoir.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Watson, L L -- Hutcheon, I D -- Epstein, S -- Stolper, E M -- New York, N.Y. -- Science. 1994 Jul 1;265(5168):86-90.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17774694" target="_blank"〉PubMed〈/a〉
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