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  • Humans  (198)
  • Chemical Engineering  (188)
  • FLUID MECHANICS AND HEAT TRANSFER  (157)
  • AERODYNAMICS  (154)
  • 1985-1989  (697)
  • 1980-1984
  • 1989  (328)
  • 1987  (369)
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Keywords
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  • 1985-1989  (697)
  • 1980-1984
Year
  • 1
    Electronic Resource
    Electronic Resource
    Facilitated transport of CO2 in ion exchange membranes (1987)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 33 (1987), S. 480-487 
    Details
    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 facilitated transport of CO2 through ion exchange membranes containing organic amine counterions was studied. Steady state CO2 fluxes were measured from pure gas streams and mixtures with CH4. Facilitation factors for CO2 up to 26.7 were calculated from transport data. Transport measurements were binary mixtures of CO2 and CH4 yielded ratios of CO2 flux to CH4 flux ranging from 29.0 to 264. Conversion of flux ratios to permeabilities yielded separation factors up to 551 for CO2 over CH4, which are compared to literature data for polymeric membranes. The transport data support a mobile, reactive-carrier facilitated transport mechanism with a carbamate zwitterion complex. Effective diffusivities for CO2 and the carrier-gas complex were determined from transport data. A reaction equilibrium model predicted facilitation factors that were in very good agreement with experimental values. Potential applications are also discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690330313
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  • 2
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    The MHC-binding and gp120-binding functions of CD4 are separable (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-08-18
    Description: CD4 is a cell surface glycoprotein that is thought to interact with nonpolymorphic determinants of class II major histocompatibility (MHC) molecules. CD4 is also the receptor for the human immunodeficiency virus (HIV), binding with high affinity to the HIV-1 envelope glycoprotein, gp120. Homolog-scanning mutagenesis was used to identify CD4 regions that are important in class II MHC binding and to determine whether the gp120 and class II MHC binding sites of CD4 are related. Class II MHC binding was abolished by mutations in each of the first three immunoglobulin-like domains of CD4. The gp120 binding could be abolished without affecting class II MHC binding and vice versa, although at least one mutation examined reduced both functions significantly. These findings indicate that, while there may be overlap between the gp120 and class II MHC binding sites of CD4, these sites are distinct and can be separated. Thus it should be possible to design CD4 analogs that can block HIV infectivity but intrinsically lack the ability to affect the normal immune response by binding to class II MHC molecules.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamarre, D -- Ashkenazi, A -- Fleury, S -- Smith, D H -- Sekaly, R P -- Capon, D J -- New York, N.Y. -- Science. 1989 Aug 18;245(4919):743-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire d'Immunologie, Institut de Recherches Cliniques de Montreal, Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2549633" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Antigens, Surface ; Binding Sites ; DNA, Recombinant ; HIV/*metabolism ; HIV Envelope Protein gp120 ; HLA-DP Antigens/immunology ; Histocompatibility Antigens Class II/*immunology ; Humans ; Hybridomas ; Mice ; Molecular Sequence Data ; Mutation ; Receptors, HIV ; Receptors, Virus/genetics/immunology/*metabolism ; Retroviridae Proteins/immunology/*metabolism ; Rosette Formation ; Structure-Activity Relationship ; T-Lymphocytes/immunology/metabolism ; Transfection
    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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    The gene for enhancer binding proteins E12/E47 lies at the t(1;19) breakpoint in acute leukemias (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-10-20
    Description: The gene (E2A) that codes for proteins with the properties of immunoglobulin enhancer binding factors E12/E47 was mapped to chromosome region 19p13.2-p13.3, a site associated with nonrandom translocations in acute lymphoblastic leukemias. The majority of t(1;19)(q23;p13)-carrying leukemias and cell lines studied contained rearrangements of E2A as determined by DNA blot analyses. The rearrangements altered the E2A transcriptional unit, resulting in the synthesis of a transcript larger than the normal-sized E2A mRNAs in one of the cell lines with this translocation. These observations indicate that the gene for a transcription factor is located at the breakpoint of a consistently recurring chromosomal translocation in many acute leukemias and suggest a direct role for alteration of such factors in the pathogenesis of some malignancies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mellentin, J D -- Murre, C -- Donlon, T A -- McCaw, P S -- Smith, S D -- Carroll, A J -- McDonald, M E -- Baltimore, D -- Cleary, M L -- CA30969/CA/NCI NIH HHS/ -- CA42106/CA/NCI NIH HHS/ -- CA42971/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1989 Oct 20;246(4928):379-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stanford University School of Medicine, CA 94025.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2799390" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Chromosome Mapping ; *Chromosomes, Human, Pair 1 ; *Chromosomes, Human, Pair 19 ; DNA-Binding Proteins/*genetics ; Humans ; Precursor Cell Lymphoblastic Leukemia-Lymphoma/*genetics ; Transcription Factors/*genetics ; Translocation, Genetic/*physiology ; Tumor Cells, Cultured
    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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  • 4
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    Two NF1 translocations map within a 600-kilobase segment of 17q11.2 (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-02
    Description: Balanced translocations, each involving chromosome 17q11.2, have been described in two patients with von Recklinghausen neurofibromatosis (NF1). To better localize the end points of these translocation events, and the NF1 gene (NF1) itself, human cosmids were isolated and mapped in the immediate vicinity of NF1. One cosmid probe, c11-1F10, demonstrated that both translocation breakpoints, and presumably NF1, are contained within a 600-kilobase Nru I fragment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Connell, P -- Leach, R -- Cawthon, R M -- Culver, M -- Stevens, J -- Viskochil, D -- Fournier, R E -- Rich, D C -- Ledbetter, D H -- White, R -- New York, N.Y. -- Science. 1989 Jun 2;244(4908):1087-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Utah, Salt Lake City 84132.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2543077" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Chromosome Mapping ; *Chromosomes, Human, Pair 17 ; Cosmids ; DNA Restriction Enzymes ; Deoxyribonucleases, Type II Site-Specific ; Electrophoresis ; Genetic Linkage ; Humans ; Hybrid Cells ; Neurofibromatosis 1/*genetics ; Rats ; *Translocation, Genetic
    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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    Isolation of single-copy human genes from a library of yeast artificial chromosome clones (1989)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1989-06-16
    Description: A recently developed cloning system based on the propagation of large DNA molecules as linear, artificial chromosomes in the yeast Saccharomyces cerevisiae provides a potential method of cloning the entire human genome in segments of several hundred kilobase pairs. Most application of this system will require the ability to recover specific sequences from libraries of yeast artificial chromosome clones and to propagate these sequences in yeast without alterations. Two single-copy genes have now been cloned from a library of yeast artificial chromosome clones that was prepared from total human DNA. Multiple, independent isolates were obtained of the genes encoding factor IX and plasminogen activator inhibitor type 2. The clones, which ranged in size from 60 to 650 kilobases, were stable on prolonged propagation in yeast and appear to contain faithful replicas of human DNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brownstein, B H -- Silverman, G A -- Little, R D -- Burke, D T -- Korsmeyer, S J -- Schlessinger, D -- Olson, M V -- GM40606/GM/NIGMS NIH HHS/ -- HD07271/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1989 Jun 16;244(4910):1348-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2544027" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosomes, Fungal ; *Cloning, Molecular ; DNA/*isolation & purification ; DNA Restriction Enzymes ; Factor IX/genetics ; Gene Library ; *Genome, Human ; Glycoproteins/genetics ; Humans ; Molecular Weight ; Plasminogen Inactivators ; Saccharomyces cerevisiae/genetics
    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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    A mammalian mitochondrial RNA processing activity contains nucleus-encoded RNA (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-03-06
    Description: Ribonuclease mitochondrial RNA processing, a site-specific endoribonuclease involved in primer RNA metabolism in mammalian mitochondria, requires an RNA component for its activity. On the basis of copurification and selective inactivation with complementary oligonucleotides, a 135-nucleotide RNA species, not encoded in the mitochondrial genome, is identified as the RNA moiety of the endoribonuclease. This finding implies transport of a nucleus-encoded RNA, essential for organelle DNA replication, to the mitochondrial matrix.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, D D -- Clayton, D A -- GM-33088-16/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1987 Mar 6;235(4793):1178-84.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2434997" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Nucleus/*physiology ; Chemical Phenomena ; Chemistry ; Drug Resistance ; Endonucleases/isolation & purification/metabolism ; Enzyme Activation/drug effects ; *Genetic Code ; Humans ; Mammals/*genetics/metabolism ; Micrococcal Nuclease/pharmacology ; Mitochondria/*metabolism ; Oligonucleotides/pharmacology ; Organoids/physiology ; RNA/*biosynthesis/genetics/isolation & purification/physiology ; Ribonucleases/metabolism ; Subcellular Fractions/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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  • 7
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    Identification of human uromodulin as the Tamm-Horsfall urinary glycoprotein (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-04-03
    Description: The primary structure of human uromodulin, a 616-amino acid, 85-kilodalton glycoprotein with in vitro immunosuppressive properties, was determined through isolation and characterization of complementary DNA and genomic clones. The amino acid sequence encoded by one of the exons of the uromodulin gene has homology to the low-density-lipoprotein receptor and the epidermal growth factor precursor. Northern hybridization analyses demonstrate that uromodulin is synthesized by the kidney. Evidence is provided that uromodulin is identical to the previously characterized Tamm-Horsfall glycoprotein, the most abundant protein in normal human urine.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pennica, D -- Kohr, W J -- Kuang, W J -- Glaister, D -- Aggarwal, B B -- Chen, E Y -- Goeddel, D V -- New York, N.Y. -- Science. 1987 Apr 3;236(4797):83-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3453112" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/analysis ; Base Sequence ; Chemistry, Physical ; Cloning, Molecular ; Cysteine ; DNA/genetics ; Gene Expression Regulation ; Genes ; Glycoproteins/*genetics ; Humans ; Mucoproteins/*analysis/*genetics ; Peptide Fragments/analysis ; Physicochemical Phenomena ; RNA, Messenger/genetics ; Uromodulin
    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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  • 8
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    Conservation of brain amyloid proteins in aged mammals and humans with Alzheimer's disease (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-02-20
    Description: The formation of clusters of altered axons and dendrites surrounding extracellular deposits of amyloid filaments (neuritic plaques) is a major feature of the human brain in both aging and Alzheimer's disease. A panel of antibodies against amyloid filaments and their constituent proteins from humans with Alzheimer's disease cross-reacted with neuritic plaque and cerebrovascular amyloid deposits in five other species of aged mammals, including monkey, orangutan, polar bear, and dog. Antibodies to a 28-amino acid peptide representing the partial protein sequence of the human amyloid filaments recognized the cortical and microvascular amyloid of all of the aged mammals examined. Plaque amyloid, plaque neurites, and neuronal cell bodies in the aged animals showed no reaction with antibodies to human paired helical filaments. Thus, with age, the amyloid proteins associated with progressive cortical degeneration in Alzheimer's disease are also deposited in the brains of other mammals. Aged primates can provide biochemically relevant models for principal features of Alzheimer's disease: cerebrovascular amyloidosis and neuritic plaque formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Selkoe, D J -- Bell, D S -- Podlisny, M B -- Price, D L -- Cork, L C -- AG05134/AG/NIA NIH HHS/ -- AG06173/AG/NIA NIH HHS/ -- NS23340/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1987 Feb 20;235(4791):873-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3544219" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Alzheimer Disease/pathology/*physiopathology ; Amyloid/immunology/*metabolism ; Amyloidosis/pathology/*physiopathology ; Animals ; Brain/pathology/*physiopathology ; Humans ; Immunoenzyme Techniques ; Macaca mulatta ; Pongo pygmaeus ; Saimiri ; Ursidae
    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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  • 9
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    Mapping human brain monoamine oxidase A and B with 11C-labeled suicide inactivators and PET (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-01-23
    Description: The regional distributions of monoamine oxidase (MAO) types A and B have been identified in human brain in vivo with intravenously injected 11C-labeled suicide enzyme inactivators, clorgyline and L-deprenyl, and positron emission tomography. The rapid brain uptake and retention of radioactivity for both 11C tracers indicated irreversible trapping. The anatomical distribution of 11C paralleled the distribution of MAO A and MAO B in human brain in autopsy material. The corpus striatum, thalamus, and brainstem contained high MAO activity. The magnitudes of uptake of both [11C]clorgyline and L-[11C]deprenyl were markedly reduced in one subject treated with the antidepressant MAO inhibitor phenelzine. A comparison of the brain uptake and retention of the 11C-labeled inactive (D-) and active (L-) enantiomers of deprenyl showed rapid clearance of the inactive enantiomer and retention of the active enantiomer within MAO B-rich brain structures, in agreement with the known stereoselectivity of MAO B for L-deprenyl. Prior treatment with unlabeled L-deprenyl prevented retention of L-[11C]deprenyl. Thus, suicide enzyme inactivators labeled with positron emitters can be used to quantitate the distribution and kinetic characteristics of MAO in human brain structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fowler, J S -- MacGregor, R R -- Wolf, A P -- Arnett, C D -- Dewey, S L -- Schlyer, D -- Christman, D -- Logan, J -- Smith, M -- Sachs, H -- NS-15638/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1987 Jan 23;235(4787):481-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3099392" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Brain/*enzymology ; Brain Stem/enzymology ; Cerebral Cortex/enzymology ; Clorgyline ; Corpus Striatum/enzymology ; Humans ; Monoamine Oxidase/*metabolism ; Selegiline ; Thalamus/enzymology ; Tomography, Emission-Computed
    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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  • 10
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    Localization of amyloid beta protein messenger RNA in brains from patients with Alzheimer's disease (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-07-03
    Description: The distribution of cells containing messenger RNA that encodes amyloid beta protein was determined in hippocampi and in various cortical regions from cynomolgus monkeys, normal humans, and patients with Alzheimer's disease by in situ hybridization. Both 35S-labeled RNA antisense and sense probes to amyloid beta protein messenger RNA were used to ensure specific hybridization. Messenger RNA for amyloid beta protein was expressed in a subset of neurons in the prefrontal cortex from monkeys, normal humans, and patients with Alzheimer's disease. This messenger RNA was also present in the neurons of all the hippocampal fields from monkeys, normal humans and, although to a lesser extent in cornu ammonis 1, patients with Alzheimer's disease. The distribution of amyloid beta protein messenger RNA was similar to that of the neurofibrillary tangles of Alzheimer's disease in some regions, but the messenger RNA was also expressed in other neurons that are not usually involved in the pathology of Alzheimer's disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bahmanyar, S -- Higgins, G A -- Goldgaber, D -- Lewis, D A -- Morrison, J H -- Wilson, M C -- Shankar, S K -- Gajdusek, D C -- AG05131/AG/NIA NIH HHS/ -- MH00519/MH/NIMH NIH HHS/ -- NS23038/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1987 Jul 3;237(4810):77-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3299701" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Amyloid/*genetics ; Amyloid beta-Peptides ; Animals ; Brain/*physiopathology ; Cerebral Cortex/physiology ; Gene Expression Regulation ; Hippocampus/physiology ; Humans ; Macaca fascicularis ; Nucleic Acid Hybridization ; RNA, Messenger/genetics
    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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