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  • Artikel  (9)
  • Polymer and Materials Science  (5)
  • DNA/metabolism  (2)
  • Female  (2)
  • Astronomy
  • Solar Physics
  • 2000-2004
  • 1985-1989  (9)
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  • 1986  (9)
  • 1
    Digitale Medien
    Digitale Medien
    Copolymerization reactivity ratios of p.vinylbenzophenone and p.dimethylamino styrene (1986)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Letters Edition 24 (1986), S. 229-232 
    Details
    ISSN: 0887-6258
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pol.1986.140240507
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  • 2
    Digitale Medien
    Digitale Medien
    Spatial chemical analysis of polymer laminates and conducting organic films using SIMS (1986)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 8 (1986), S. 195-203 
    Details
    ISSN: 0142-2421
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: Secondary ion mass spectrometry (SIMS) has been used to generate images of polymeric materials including a polymer laminate and metal-chelated organic materials cured on Teflon substrates. Metal-chelation facilitated the imaging of organic materials by monitoring of the metallic tag. Incorporation of the metal into the organic complex made the sample conductive therefore circumventing charging difficulties normally associated with SIMS analysis of organics. Each layer of the polymer laminate could be easily identified by monitoring molecular fragment ions that were distinctive for each polymer type. Images were acquired at a resolution of approximately 5-10 μm.
    Zusätzliches Material: 11 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/sia.740080503
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  • 3
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    Atrial natriuretic peptide elevation in congestive heart failure in the human (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-03-07
    Beschreibung: A sensitive radioimmunoassay for atrial natriuretic peptide was used to examine the relation between circulating atrial natriuretic peptide and cardiac filling pressure in normal human subjects, in patients with cardiovascular disease and normal cardiac filling pressure, and in patients with cardiovascular disease and elevated cardiac filling pressure with and without congestive heart failure. The present studies establish a normal range for atrial natriuretic peptide in normal human subjects. These studies also establish that elevated cardiac filling pressure is associated with increased circulating concentrations of atrial natriuretic peptide and that congestive heart failure is not characterized by a deficiency in atrial natriuretic peptide, but with its elevation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Burnett, J C Jr -- Kao, P C -- Hu, D C -- Heser, D W -- Heublein, D -- Granger, J P -- Opgenorth, T J -- Reeder, G S -- New York, N.Y. -- Science. 1986 Mar 7;231(4742):1145-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2935937" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adult ; Aged ; Atrial Natriuretic Factor/*blood ; Cardiovascular Diseases/blood ; Female ; Heart Failure/*blood ; Hemodynamics ; Humans ; Male ; Middle Aged ; Radioimmunoassay
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Shock and tissue injury induced by recombinant human cachectin (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-24
    Beschreibung: Cachectin (tumor necrosis factor), a protein produced in large quantities by endotoxin-activated macrophages, has been implicated as an important mediator of the lethal effect of endotoxin. Recombinant human cachectin was infused into rats in an effort to determine whether cachectin, by itself, can elicit the derangements of host physiology caused by administration of endotoxin. When administered in quantities similar to those produced endogenously in response to endotoxin, cachectin causes hypotension, metabolic acidosis, hemoconcentration, and death within minutes to hours, as a result of respiratory arrest. Hyperglycemia and hyperkalemia were also observed after infusion. At necropsy, diffuse pulmonary inflammation and hemorrhage were apparent on gross and histopathologic examination, along with ischemic and hemorrhagic lesions of the gastrointestinal tract, and acute renal tubular necrosis. Thus, it appears that a single protein mediator (cachectin) is capable of inducing many of the deleterious effects of endotoxin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tracey, K J -- Beutler, B -- Lowry, S F -- Merryweather, J -- Wolpe, S -- Milsark, I W -- Hariri, R J -- Fahey, T J 3rd -- Zentella, A -- Albert, J D -- New York, N.Y. -- Science. 1986 Oct 24;234(4775):470-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3764421" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Blood Glucose/metabolism ; Endotoxins/toxicity ; Female ; Glycoproteins/*toxicity ; Humans ; Potassium/blood ; Rats ; Recombinant Proteins ; Shock/*chemically induced/pathology/physiopathology ; Sodium/blood ; Tumor Necrosis Factor-alpha
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
    Digitale Medien
    Digitale Medien
    A specific model for the conformation of single-stranded polynucleotides in complex with the helix-destabilizing protein GP32 of bacteriophage T4 (1986)
    New York : Wiley-Blackwell
    Biopolymers 25 (1986), S. 1419-1448 
    Details
    ISSN: 0006-3525
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The CD and absorption (OD) spectra of single-stranded nucleic acids in complex with the helix-destabilizing protein of either bacteriophage T4 (GP32) or bacteriophage fd (GP5) show similar and unusual features for all polynucleotides investigated. The change in the CD spectra between 310 and 240 nm is in all cases characterized by a considerable decrease in the positive band, while the negative band (if present) remains relatively intense. These changes are different from those due to temperature or solvent denaturation and, moreover, cannot be induced by the binding of simple oligopeptides. Absorption measurements show that all polynucleotides remain hypochromic in the complex. Both CD and OD spectra point to a specific and probably similar conformation in complex for all polynucleotides with substantial interactions between the bases. The spectral properties are almost temperature independent (0-40°C). Therefore, we conclude that the conformation must be regular and rigid. To investigate the relation between these optical properties and the specific polynucleotide structure, CD and OD spectra were calculated for an adenine hexamer over a wide range of the conformational parameters. It appears that the calculated CD intensity is not very sensitive to an increase in the axial increment and that many different conformations can give rise to more or less similar CD spectra. However, simulation of the very nonconservative experimental CD spectrum of the poly(rA)-GP32 complex requires that the conformation satisfies two criteria: (1) a considerable tilt of the bases (≲ - 10°) in combination with (2) a small rotation per base (≃20°) and/or a position of the bases close to the helix axis (dx ≃ 0 Å). Such conformations can also explain the observed hyperchromism upon binding of GP32 to poly(rA)/(dA). Very similar structural characteristics also account for the optical properties of the complexes with GP5. These are discussed as an alternative to the structure suggested by Alma-Zeestraten for poly(dA) in the complex [N. C. M. Alma-Zeestraten (1982) Doctoral thesis Catholic University, Nijmegen, The Netherlands]. The secondary structure proposed in this work can be reconciled with the overall dimensions of the complex, assuming that the polynucleotide helix is further organized in a superhelix.
    Zusätzliches Material: 13 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/bip.360250805
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  • 6
    Digitale Medien
    Digitale Medien
    Polymer chain segment orientation during stress relaxation (1986)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 24 (1986), S. 203-208 
    Details
    ISSN: 0887-6266
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/polb.1986.180240119
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  • 7
    Digitale Medien
    Digitale Medien
    Monochromator versus deconvolution in xps: signal-to-noise considerationsThis work was sponsored by the Air Force Wright Aeronautical Laboratories, Materials Laboratory, Air Force Systems Command, United States Air Force, Wright-Patterson Air Force Base, Ohio 45433, USA. (1986)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 9 (1986), S. 132-132 
    Details
    ISSN: 0142-2421
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/sia.740090212
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  • 8
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    Binding of the Sp1 transcription factor by the human Harvey ras1 proto-oncogene promoter (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-06-13
    Beschreibung: Members of the ras gene family encode proteins that when overproduced or mutated can transform immortalized mammalian cells. It is therefore important to understand the mechanisms by which the ras genes are regulated. The promoter region of the human Harvey ras proto-oncogene c-Ha-ras1 initiates RNA transcription at multiple sites and contains repeated copies of the hexanucleotide GGGCGG and its inverted complement CCGCCC, referred to as GC boxes. These GC boxes consist of sequences identical to those found in the SV40 early promoter, where the human cellular transcriptional factor Sp1 binds. Footprinting analysis with deoxyribonuclease I was used to show that Sp1 binds to six GC box sequences within the c-Ha-ras1 promoter. An in vivo transfection assay showed competition between the 21-base pair repeats of the SV40 promoter and the c-Ha-ras1 promoter for common regulatory factors. In this system the presence of Sp1 is apparently required for c-Ha-ras1 transcription. Analysis of deletions of the c-Ha-ras1 promoter region by means of a transient expression assay revealed that the three Sp1 binding sites closest to the RNA start sites were sufficient for full transcriptional activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ishii, S -- Kadonaga, J T -- Tjian, R -- Brady, J N -- Merlino, G T -- Pastan, I -- New York, N.Y. -- Science. 1986 Jun 13;232(4756):1410-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3012774" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Base Sequence ; Binding, Competitive ; DNA/metabolism ; DNA-Binding Proteins/metabolism ; Gene Expression Regulation ; HeLa Cells ; Humans ; *Promoter Regions, Genetic ; *Proto-Oncogenes ; Simian virus 40/genetics ; Transcription Factors/*genetics/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Purification and biochemical characterization of the promoter-specific transcription factor, Sp1 (1986)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1986-10-03
    Beschreibung: The biochemical analysis of cellular trans-activators involved in promoter recognition provides an important step toward understanding the mechanisms of gene expression in animal cells. The promoter selective transcription factor, Sp1, has been purified from human cells to more than 95 percent homogeneity by sequence-specific DNA affinity chromatography. Isolation and renaturation of proteins purified from sodium dodecyl sulfate polyacrylamide gels allowed the identification of two polypeptides (105 and 95 kilodaltons) as those responsible for recognizing and interacting specifically with the GC-box promoter elements characteristic of Sp1 binding sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Briggs, M R -- Kadonaga, J T -- Bell, S P -- Tjian, R -- T32 ES07075/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 1986 Oct 3;234(4772):47-52.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3529394" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Sequence ; Chromatography, Affinity ; Chromatography, High Pressure Liquid ; Cricetinae ; Cricetulus ; DNA/metabolism ; DNA-Binding Proteins/*isolation & purification/metabolism ; Electrophoresis, Polyacrylamide Gel ; Gene Expression Regulation ; HeLa Cells/metabolism ; Humans ; Sp1 Transcription Factor ; Transcription Factors/*isolation & purification/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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