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  • 1985-1989  (314)
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  • 1
    Call number: SR 90.0004(2334)
    In: United States Geological Survey water-supply paper
    Type of Medium: Series available for loan
    Pages: IV, 18 S.
    Series Statement: U.S. Geological Survey water-supply paper 2334
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 52 (1987), S. 4397-4399 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 221-231 
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In this paper the features of propagation of intense relativistic beams are discussed in the environment of low-density ((approximately-less-than)1 Torr), partially ionized gas. Beam phenomena in this ion-focused regime (IFR) are found to be analogous to those at much higher density. Several instabilities and dissipative mechanisms have been identified and are compared to their high-density counterparts. Scaling laws are derived for quantitative estimation of these effects. In general, it is found that long propagation distances are possible in the laboratory suggesting that this regime may be useful for controlled beam transport and conditioning.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Space science reviews 48 (1988), S. 321-334 
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The advent of reliable extraterrestrial solar irradiance measurements from satellites has supplied the impetus for new research in solar physics and solar-terrestrial relationships. The records for the principal experiments now extend beyond nine years. The Nimbus-7 measurements began in November 1978 and the Solar Maximum Mission (SMM) results started in February 1980. Both the ERB experiment of Nimbus-7 and the ACRIM experiment of SMM are still operational as of this writing (June 1988). We describe the nine-year Nimbus-7 total solar irradiance data set and compare it with similar data sets from the SMM and other satellite solar monitoring programs. Long-term downward trends of less than 0.02 % per year had been noted during the decaying portion of solar cycle 21 with indications that a leveling off and possible reversal of the trend was being experienced as we enter the new cycle. It had been demonstrated that fluctuations in the data over shorter periods corresponded to solar activity, from a primary discovery of irradiance depletions in times of building large sunspot groups to more subtle effects on the scale of solar rotation. Studies of the frequency spectra of the measurements have advanced the interest in helioseismology or mode analysis. Studies of photospheric activity have advanced by modelling of the sunspot blocking and photospheric brightening versus the measured irradiance. The theories are being extended to longer time-scales which indicate that solar irradiance is higher near solar cycle maximum, as defined by activity, and somewhat lower during the period between cycles. While measurements of total solar irradiance, the solar constant, alone cannot be employed to answer all of the questions of solar physics or helioclimatology, these long-term, high-precision data sets are valuable to both disciplines. The continuation of such measurements to more meaningful, longer time-scales should have a high priority in the international space community.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Utilization and production of amino acids by primary cultures of chicken growth plate epiphyseal chondrocytes grown in Dulbecco's modified Eagle's medium supplemented with 10% fetal bovine serum were investigated in both short-term (6-72 h) and long-term (3-24 day) cultures. Comparative studies were made on levels of free amino acids in chicken blood plasma and serum, and in extracellular fluids from different regions of growth plate cartilage and from two types of muscle. Chondrocytes rapidly consumed glutamine from the medium, and to lesser extents, various other amino acids. In contrast, free ammonia, alanine, glycine, glutamate, proline, and aspartate were released into the medium. The utilization of certain amino acids changed, depending on the stage of culture. Initially glutamate was released into the medium but after confluency was consumed. Conversely, histidine, lysine, and phenylalanine were initially utilized but later were released into the medium. Levels of total free amino acids in extracellular fluids of cartilage and muscle were higher than those in plasma and serum, while in cartilage the levels increased progressively from the resting to the hypertrophic zones. In these sequential regions certain amino acids increased proportionally, whereas others decreased. These interrelationships generally correlated closely with metabolism of amino acids by the cultured chondrocytes. They indicate that significant differences in amino acid metabolism exist between tissue areas and are reflected in the extracellular fluid composition. Accordingly, adjustment of specific amino acids may optimize culture conditions, enabling more normal phenotypic expression in vitro.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 1987
    Keywords: Absorption ; Earthquake precursor: prediction research ; Earthquake precursor: others (animal behav., wobble, tides) ; Quality factor ; JGR
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  • 7
    Publication Date: 1989-04-28
    Description: Confirmed infection with HTLV-II (human T cell leukemia virus type II) has been described only in rare cases. The major limitation to serological diagnosis of HTLV-II has been the difficulty of distinguishing HTLV-II from HTLV-I (human T cell leukemia virus type I) infection, because of substantial cross-reactivity between the viruses. A sensitive modification of the polymerase chain reaction method was used to provide unambiguous molecular evidence that a significant proportion of intravenous drug abusers are infected with HTLV, and the majority of these individuals are infected with HTLV-II rather than HTLV-I. Of 23 individuals confirmed by polymerase chain reaction analysis to be infected with HTLV, 21 were identified to be infected with HTLV-II, and 2 were infected with HTLV-I. Molecular identification of an HTLV-II--infected population provides an opportunity to investigate the pathogenicity of HTLV-II in humans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, H -- Swanson, P -- Shorty, V S -- Zack, J A -- Rosenblatt, J D -- Chen, I S -- New York, N.Y. -- Science. 1989 Apr 28;244(4903):471-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Diagnostics Division, Abbott Laboratories, North Chicago, IL 60064.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2655084" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA, Viral/analysis ; DNA-Directed DNA Polymerase ; Genes, Viral ; HTLV-I Antibodies/analysis ; HTLV-I Infections/diagnosis/epidemiology/etiology ; HTLV-II Antibodies/*analysis ; HTLV-II Infections/diagnosis/*epidemiology/etiology ; Human T-lymphotropic virus 1/genetics/immunology ; Human T-lymphotropic virus 2/genetics/immunology ; Humans ; Immunoblotting ; Immunoenzyme Techniques ; Louisiana ; Molecular Sequence Data ; Sequence Homology, Nucleic Acid ; Substance-Related Disorders/*complications
    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
    Publication Date: 1988-12-16
    Description: Mutational inactivation of the retinoblastoma susceptibility (RB) gene has been proposed as a crucial step in the formation of retinoblastoma and other types of human cancer. This hypothesis was tested by introducing, via retroviral-mediated gene transfer, a cloned RB gene into retinoblastoma or osteosarcoma cells that had inactivated endogenous RB genes. Expression of the exogenous RB gene affected cell morphology, growth rate, soft agar colony formation, and tumorigenicity in nude mice. This demonstration of suppression of the neoplastic phenotype by a single gene provides direct evidence for an essential role of the RB gene in tumorigenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Huang, H J -- Yee, J K -- Shew, J Y -- Chen, P L -- Bookstein, R -- Friedmann, T -- Lee, E Y -- Lee, W H -- EY-05758/EY/NEI NIH HHS/ -- HD-20034/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1988 Dec 16;242(4885):1563-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, School of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3201247" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Division ; DNA, Neoplasm/genetics ; Disease Susceptibility ; Eye Neoplasms/*genetics/pathology ; Humans ; Osteosarcoma/genetics ; Phenotype ; Phosphoproteins/genetics ; Plasmids ; Retinoblastoma/*genetics/pathology ; *Suppression, Genetic ; Transcription, Genetic ; *Transfection ; Tumor Cells, Cultured/metabolism
    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
    Publication Date: 1988-07-08
    Description: Mutational inactivation of the retinoblastoma susceptibility (RB) gene, a recessive cancer gene, has been implicated in the genesis of retinoblastoma and certain other human neoplasms. This gene is now shown to be inactivated in two of nine human breast cancer cell lines examined. The RB gene of one cell line had a homozygous internal duplication of a 5-kilobase region containing exons 5 and 6. The RB messenger RNA transcript was correspondingly lengthened, and its translation was probably terminated prematurely due to a shifted reading frame. The other cell line had a homozygous deletion of the RB gene that removed the entire gene beyond exon 2. The RB gene product, pp110RB, was not detectable in either cell line by immuno-precipitation with specific antibodies. These findings are significant in relation to proposed genetic mechanisms of breast cancer formation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, E Y -- To, H -- Shew, J Y -- Bookstein, R -- Scully, P -- Lee, W H -- CA39537/CA/NCI NIH HHS/ -- EY00278/EY/NEI NIH HHS/ -- EY05758/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1988 Jul 8;241(4862):218-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, School of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3388033" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/*genetics ; Chromosomes, Human, Pair 13 ; DNA, Neoplasm/*genetics ; Gene Expression Regulation ; Genes ; Humans ; Retinoblastoma/*genetics ; 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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  • 10
    Publication Date: 1985-11-15
    Description: A newly identified protein from HTLV-III/LAV, the virus implicated as the etiologic agent of the acquired immune deficiency syndrome, was studied. This protein, which has a molecular weight of 27,000 (p27), was shown by amino acid sequencing to have a coding origin 3' to the env gene on the HTLV-III genome. The presence of antibodies to p27 in virus-exposed individuals indicated that this gene is functional in the natural host.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Allan, J S -- Coligan, J E -- Lee, T H -- McLane, M F -- Kanki, P J -- Groopman, J E -- Essex, M -- 2T32-CA09031/CA/NCI NIH HHS/ -- CA23885/CA/NCI NIH HHS/ -- CA37466/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1985 Nov 15;230(4727):810-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2997921" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*immunology/microbiology ; Amino Acid Sequence ; Animals ; Antibodies, Viral/*immunology ; Antibody Formation ; Antigens, Viral/*immunology ; Deltaretrovirus/genetics/*immunology ; Electrophoresis, Polyacrylamide Gel ; Haplorhini/microbiology ; Humans ; Male ; Molecular Weight ; Repetitive Sequences, Nucleic Acid
    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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