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  • Animals  (103)
  • Chemical Engineering  (97)
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  • 1995-1999  (190)
  • 1955-1959  (16)
  • 1995  (190)
  • 1956  (16)
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  • 1995-1999  (190)
  • 1955-1959  (16)
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  • 1
    Publication Date: 1995-12-22
    Description: A physical map has been constructed of the human genome containing 15,086 sequence-tagged sites (STSs), with an average spacing of 199 kilobases. The project involved assembly of a radiation hybrid map of the human genome containing 6193 loci and incorporated a genetic linkage map of the human genome containing 5264 loci. This information was combined with the results of STS-content screening of 10,850 loci against a yeast artificial chromosome library to produce an integrated map, anchored by the radiation hybrid and genetic maps. The map provides radiation hybrid coverage of 99 percent and physical coverage of 94 percent of the human genome. The map also represents an early step in an international project to generate a transcript map of the human genome, with more than 3235 expressed sequences localized. The STSs in the map provide a scaffold for initiating large-scale sequencing of the human genome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hudson, T J -- Stein, L D -- Gerety, S S -- Ma, J -- Castle, A B -- Silva, J -- Slonim, D K -- Baptista, R -- Kruglyak, L -- Xu, S H -- Hu, X -- Colbert, A M -- Rosenberg, C -- Reeve-Daly, M P -- Rozen, S -- Hui, L -- Wu, X -- Vestergaard, C -- Wilson, K M -- Bae, J S -- Maitra, S -- Ganiatsas, S -- Evans, C A -- DeAngelis, M M -- Ingalls, K A -- Nahf, R W -- Horton, L T Jr -- Anderson, M O -- Collymore, A J -- Ye, W -- Kouyoumjian, V -- Zemsteva, I S -- Tam, J -- Devine, R -- Courtney, D F -- Renaud, M T -- Nguyen, H -- O'Connor, T J -- Fizames, C -- Faure, S -- Gyapay, G -- Dib, C -- Morissette, J -- Orlin, J B -- Birren, B W -- Goodman, N -- Weissenbach, J -- Hawkins, T L -- Foote, S -- Page, D C -- Lander, E S -- HG00017/HG/NHGRI NIH HHS/ -- HG00098/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 1995 Dec 22;270(5244):1945-54.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead-MIT Center for Genome Research, Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8533086" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; *Chromosome Mapping ; Chromosomes, Artificial, Yeast ; Databases, Factual ; Gene Expression ; Genetic Markers ; *Genome, Human ; *Human Genome Project ; Humans ; Hybrid Cells ; Polymerase Chain Reaction ; *Sequence Analysis, DNA ; *Sequence Tagged Sites
    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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  • 2
    Publication Date: 1995-11-17
    Description: Strategies for the treatment of human immunodeficiency virus-type 1 (HIV-1) infection must contend with the obstacle of drug resistance. HIV-1 nucleocapsid protein zinc fingers are prime antiviral targets because they are mutationally intolerant and are required both for acute infection and virion assembly. Nontoxic disulfide-substituted benzamides were identified that attack the zinc fingers, inactivate cell-free virions, inhibit acute and chronic infections, and exhibit broad antiretroviral activity. The compounds were highly synergistic with other antiviral agents, and resistant mutants have not been detected. Zinc finger-reactive compounds may offer an anti-HIV strategy that restricts drug-resistance development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice, W G -- Supko, J G -- Malspeis, L -- Buckheit, R W Jr -- Clanton, D -- Bu, M -- Graham, L -- Schaeffer, C A -- Turpin, J A -- Domagala, J -- Gogliotti, R -- Bader, J P -- Halliday, S M -- Coren, L -- Sowder, R C 2nd -- Arthur, L O -- Henderson, L E -- New York, N.Y. -- Science. 1995 Nov 17;270(5239):1194-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Antiviral Drug Mechanisms, PRI/DynCorp., National Cancer Institute-Frederick Cancer Research and Development Center, MD 21702, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7502043" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antiviral Agents/chemistry/pharmacokinetics/*pharmacology ; Benzamides/chemistry/pharmacokinetics/*pharmacology ; Biological Availability ; Capsid/chemistry/*metabolism ; *Capsid Proteins ; Cell Line ; Disulfides/chemistry/pharmacokinetics/*pharmacology ; Drug Resistance, Microbial ; Drug Synergism ; Gene Products, gag/*antagonists & inhibitors/chemistry ; HIV-1/*drug effects/physiology ; Humans ; Male ; Mice ; Molecular Sequence Data ; *Viral Proteins ; Zinc Fingers/*drug effects ; gag Gene Products, Human Immunodeficiency Virus
    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
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 41 (1995), S. 1413-1425 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The adsorption of ethane from helium was measured in beds packed with 2.5 μm zeolite crystals and containing either a single hollow fiber or multiple fibers. THe single-fiber experiments indicate that the mass-transfer rate in bends containing zeolite 13X is limited by diffusion across the fiber wall and through macropores. FOr adsorption in single-fiber beds packed with zeolite 4A, mass transfer is limited by micropore diffusion within the particles. Breakthrough curves from beds containign 13X are adequately described with the linear driving force model, while curves from beds containing 4A are consistent with the Rosen model.Breakthrough curves from beds packed with zeolite 13X and containing multiple fibers can be predicted from the experiments with single-fiber beds when the fibers are evenly spaced. When fibers are unevenly spaced, the breakthrough curves are more disperse. Unevenly spaced fibers are the normal case. Even when fibers are evenly spaced, the productivity of hollow-fiber beds is expected to be no greater than that in conventional beds.
    Additional Material: 11 Ill.
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  • 4
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An investigation into the effect of isothermal aging on the development of transverse cracks in cross-ply laminates of two high temperature composite systems was performed. The composite materials investigated were BASF X5260/640-800 and DuPont Avimid K/IM6. Changes in the glass transition temperature, composite weight loss, crack density, and mode I intralaminar fracture toughness were monitored during isothermal aging in air at 177°C for up to 2232 h. The two laminate configurations used in this study include two variations of the generic cross-ply configuration [02/90n]s, in which n equals 1 and 2. The results of this investigation show that a layer of degraded material forms at the surface of the X5260/640-800 bismaleimide laminates and that the thickness of the degraded layer increases with aging time. After 744 h of aging, transverse cracks form in the surface plies and an increasing crack density evolves as aging time is increased; however, transverse cracks do not form in the inner 90° ply groups with aging during the time period investigated. The Avimid K/IM6 thermoplastic polyimide laminates, which show evidence of cracking prior to aging, do not exhibit any significant change in crack density with aging. The results of the aging experiments also show that the bismaleimide system exhibits a weight loss of 1.5% and an increase in glass transition temperature from 250°C to 300°C after 2232 h of aging at 177°C, while the thermoplastic polyimide system shows a weight loss of only 0.05% and an increase in glass transition temperature from 280 to 285°C after 2232 h. Changes in the resistance to crack formation are also seen in these materials during aging. The mode I intralaminar fracture toughness, a measure of resistance to transverse crack formation, shows a 50% decrease after aging for 2232 h for the bismaleimide system, while the behavior exhibited by the thermoplastic polyimide shows little evidence of a reduction.
    Additional Material: 8 Ill.
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  • 5
    Publication Date: 1995-04-07
    Description: A morbillivirus has been isolated and added to an increasing list of emerging viral diseases. This virus caused an outbreak of fatal respiratory disease in horses and humans. Genetic analyses show it to be only distantly related to the classic morbilliviruses rinderpest, measles, and canine distemper. When seen by electron microscopy, viruses had 10- and 18-nanometer surface projections that gave them a "double-fringed" appearance. The virus induced syncytia that developed in the endothelium of blood vessels, particularly the lungs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Murray, K -- Selleck, P -- Hooper, P -- Hyatt, A -- Gould, A -- Gleeson, L -- Westbury, H -- Hiley, L -- Selvey, L -- Rodwell, B -- New York, N.Y. -- Science. 1995 Apr 7;268(5207):94-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CSIRO Australian Animal Health Laboratory, East Geelong, Victoria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7701348" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Amino Acid Sequence ; Animals ; Base Sequence ; Cercopithecus aethiops ; Disease Outbreaks/*veterinary ; Female ; Horse Diseases/epidemiology/mortality/*virology ; Horses ; Humans ; Kidney/virology ; Lung/virology ; Male ; Middle Aged ; Molecular Sequence Data ; Morbillivirus/genetics/*isolation & purification ; Morbillivirus Infections/epidemiology/mortality/*veterinary/*virology ; Pregnancy ; Queensland/epidemiology ; Respiratory Tract Infections/veterinary/virology ; Spleen/virology ; Vero Cells ; Virus Cultivation
    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
    Publication Date: 1995-07-28
    Description: The gene product of the ob locus is important in the regulation of body weight. The ob product was shown to be present as a 16-kilodalton protein in mouse and human plasma but was undetectable in plasma from C57BL/6J ob/ob mice. Plasma levels of this protein were increased in diabetic (db) mice, a mutant thought to be resistant to the effects of ob. Daily intraperitoneal injections of either mouse or human recombinant OB protein reduced the body weight of ob/ob mice by 30 percent after 2 weeks of treatment with no apparent toxicity but had no effect on db/db mice. The protein reduced food intake and increased energy expenditure in ob/ob mice. Injections of wild-type mice twice daily with the mouse protein resulted in a sustained 12 percent weight loss, decreased food intake, and a reduction of body fat from 12.2 to 0.7 percent. These data suggest that the OB protein serves an endocrine function to regulate body fat stores.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Halaas, J L -- Gajiwala, K S -- Maffei, M -- Cohen, S L -- Chait, B T -- Rabinowitz, D -- Lallone, R L -- Burley, S K -- Friedman, J M -- DK41096/DK/NIDDK NIH HHS/ -- RR00862/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1995 Jul 28;269(5223):543-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Genetics, Howard Hughes Medical Institute, Rockfeller University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7624777" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue/drug effects ; Animals ; Blood Glucose/analysis ; Body Composition/drug effects ; Diabetes Mellitus/blood/physiopathology ; Eating/drug effects ; Energy Metabolism/drug effects ; Female ; Humans ; Leptin ; Mice ; Mice, Inbred C57BL ; Mice, Obese ; Obesity/blood/genetics/*physiopathology ; Proteins/analysis/genetics/*pharmacology/physiology ; Recombinant Proteins/administration & dosage/pharmacology ; Weight Loss/*drug 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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  • 7
    Publication Date: 1995-01-27
    Description: Small changes in the peptide-major histocompatibility complex (MHC) molecule ligands recognized by antigen-specific T cell receptors (TCRs) can convert fully activating complexes into partially activating or even inhibitory ones. This study examined early TCR-dependent signals induced by such partial agonists or antagonists. In contrast to typical agonist ligands, both an antagonist and several partial agonists stimulated a distinct pattern of zeta chain phosphorylation and failed to activate associated ZAP-70 kinase. These results identify a specific step in the early tyrosine phosphorylation cascade that is altered after TCR engagement with modified peptide-MHC molecule complexes. This finding may explain the different biological responses to TCR occupancy by these variant ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Madrenas, J -- Wange, R L -- Wang, J L -- Isakov, N -- Samelson, L E -- Germain, R N -- New York, N.Y. -- Science. 1995 Jan 27;267(5197):515-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lymphocyte Biology Section, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7824949" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Clone Cells ; Cytochrome c Group/pharmacology ; Enzyme Activation ; Histocompatibility Antigens Class II/genetics/immunology/*pharmacology ; Interleukin-2/biosynthesis ; L Cells (Cell Line) ; Ligands ; Lymphocyte Activation ; Membrane Proteins/*metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Peptide Fragments/pharmacology ; Phosphorylation ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell/agonists/antagonists & inhibitors/*metabolism ; Signal Transduction ; T-Lymphocytes, Helper-Inducer/*immunology ; Tyrosine/metabolism ; ZAP-70 Protein-Tyrosine Kinase
    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
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 202-210 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: The melt viscosity of thermoplastic starch has been investigated as a function of temperature, moisture content, and processing conditions. The effects of various low molecular weight additives have also been studied. Starch melts exhibit power law behavior over the range of shear rates studied. Melt viscosity decreased with increasing temperature and moisture content (MC). The power law index m increased with increasing temperature. The consistency K decreased with increasing temperature and increasing moisture content. Moisture content during the pelletizing step influenced melt viscosities measured after equilibration to different MCs. All additives studied except glycerol monostearate (GMS) significantly lowered the melt viscosity of starch, some more effectively than water relative to starch with 15% MC. Starch with GMS had viscosities essentially the same as, or slightly higher than, starch/water. This behavior may be due to the presence of unmelted helical inclusion complexes of starch and GMS. Starch formulations at 160°C exhibited melt visocosities similar to an LDPE of melt index 1.8.
    Additional Material: 16 Ill.
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  • 9
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 35 (1995), S. 1117-1123 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: Double yields, as well as other complex yielding behavior, that are observed during the tensile deformation of the polyethylenes have been studied in a systematic manner. The conditions under which such yielding is observed were established by studying a set of linear polyethylenes and well-characterized ethylene copolymers of narrow molecular weight and composition distributions. A wide range in crystallinity levels were developed and the rate of deformation and the deformation temperature were varied. These experimental results make clear why such complex yielding processes are not always observed. A qualitative explanation, based on the postulate of a partial melting-recrystallization process during deformation, is given that encompasses all of the experimental data.
    Additional Material: 6 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 41 (1995), S. 446-455 
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Studies of heat and mass transfer in packed beds, which disagree substantially in their findings, have nearly all been done with beds of regular particles of uniform size, whereas oil-shale retorting involves particles of diverse irregular shapes and sizes. We, in 349 runs, measured mass-transfer rates from naphthalene particles buried in packed beds by passing through air at room temperature. An exact analogy between convection of heat and mass makes it possible to infer heat-transfer coefficients from measured mass-trans-fer coefficients and fluid properties. Some beds consisted of spheres, naphthalene and inert, of the same, contrasting or distributed sizes. In some runs, naphthalene spheres were buried in beds of crushed shale, some in narrow screen ranges and others with a wide size range. In others, naphthalene lozenges of different shapes were buried in beds of crushed shale in various bed axis orientations. This technique permits calculation of the mass-transfer coefficient for each active particle in the bed rather than, as in most past studies, for the bed as a whole.The data are analyzed by the traditional correlation of Colburn jD vs. Reynolds number and by multiple regression of the mass-transfer coefficient on air rate, sizes of active and inert particles, void fraction, and temperature. Principal findings are: local Reynolds number should be based on the active-particle size, not the average for the whole bed; differences between shallow and deep beds are not appreciable; mass transfer is 26% faster for spheres and lozenges buried in shale than in all-sphere beds; orientation of lozenges in shale beds has little or no effect on mass-transfer rate; and for mass or heat transfer in shale beds, log(j·∊) = - 0.0747 - 0.6344logNRe + 0.0592log2 NRe.
    Additional Material: 15 Ill.
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