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  • GEOPHYSICS  (12)
  • Analytical Chemistry and Spectroscopy  (5)
  • Animals  (4)
  • Spacecraft Design, Testing and Performance
  • ddc:330
  • 1990-1994  (21)
  • 1
    Electronic Resource
    Electronic Resource
    Molecular fragmentation patterns of carbon dioxide at very high internal energies (1993)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 28 (1993), S. 340-343 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ion-ion coincidence measurements following K-shell absorption in the carbon dioxide molecule were performed by applying time-of-flight mass spectrometry in conjunction with monochromatic synchrotron radiation and electron impact. Identification of particularly sensitive electronic transitions and the consecutive molecular fragmentation in real time was performed. Analysis of coincidence recordings from decomposition of carbon dioxide reveals one distinct pathway in which three cations are formed following excitation of oxygen Is electrons.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210280413
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Fast-atom bombardment/mass-analysed ion kinetic energy spectrometry of inositol phosphates (1993)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 7 (1993), S. 555-560 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The application of fast-atom bombardment mass Spectrometry and collisiorutlly induced dissociation with mass-analysed ion kinetic energy (CID/MIKE) Spectrometry of representative inositol mono-, bis- and trisphos-phates is described. Based on their CID/MIKE spectra, inositol polyphosphates containing vicinal phosphate groups could be distinguished from isomers in which adjacent phosphate groups were absent. The potential value of this procedure in studies of the biochemistry of intracellular second messengers is discussed.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290070631
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Characterization of glucuronic acid conjugates of a novel angiotensin receptor antagonist (1994)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 8 (1994), S. 217-221 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Nanogram quantities of glucuronic acid conjugates of GR117289 in rat and dog bile have been analysed by semi-microbore high-performance liquid chromatography (HPLC)/ionspray mass spectrometry with on-line UV diode array detection. The determination of drug metabolites in bile has often proved problematical due to the large number of endogenous components in this biological matrix, in particular the bile acids. Semi-microbore HPLC is useful for concentrating small quantities of material and, in combination with an on-line diode array detector, for distinguishing between drug related and endogenous components. A novel angiotensin II receptor antagonist, GR117289, had proved difficult to analyse by thermospray mass spectrometry because of its thermal lability. The use of the less thermally dependent technique of ionspray mass spectrometry allowed the characterization of nanogram quantities of glucuronic acid metabolites of GR117289 in bile.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290080218
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Structures of zearalenone and zearalanone in solution: A high-field NMR and molecular modelling study (1990)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 835-845 
    Details
    ISSN: 0749-1581
    Keywords: Zearalenone ; Zearalanone ; 1H and 13C NMR ; Molecular modelling ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The complete 1H and 13C NMR spectra of the mycotoxin zearalenone are described. An analysis of all the vicinal proton-proton coupling constants, together with molecular modelling results, leads to a three-dimensional structure very similar to those observed x-ray crystallographically for related systems. Analogous data on zearalanone reveal that whereas the overall molecular geometry is similar to that of zearalenone, the alkyl terminus of the 12-membered bridging moiety is now oriented almost orthogonally to the aromatic ring plane.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260281002
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    NMR analysis of fluorinated corticosteroids related to fluocinonide: Detection of long-range 1H-19F couplings using the heteronuclear equivalent of the COSY experiment (1991)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 387-397 
    Details
    ISSN: 0749-1581
    Keywords: 1H NMR ; 19F Corticosteroids ; 1H-19F long-range coupling ; Heteronuclear COSY ; 1H-19F 2D correlation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The analysis of the 1H and 19F NMR spectra of the corticosteroid fluocinonide and five related steroids is reported. The 500 MHz 1H NMR spectra revealed several previously undetected long-range 1H-19F coupling constants. These couplings were assigned by the application of the heteronuclear equivalent of the COSY pulse sequence. The fluorine substituent effects and long-range heteronuclear couplings were examined in relation to structures derived from molecular mechanics (MMX) calculations.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260290417
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    Paper (German National Licenses)
    Fulltext
  • 6
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    Hantavirus pulmonary syndrome: an emerging infectious disease (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1993-11-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hughes, J M -- Peters, C J -- Cohen, M L -- Mahy, B W -- New York, N.Y. -- Science. 1993 Nov 5;262(5135):850-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Center for Infectious Diseases, U.S. Department of Health and Human Services, Atlanta, GA 30333.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8235607" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bunyaviridae Infections/*epidemiology/microbiology/therapy ; *Disease Outbreaks ; Disease Reservoirs ; Hantavirus/*isolation & purification ; Humans ; Lung Diseases/*epidemiology/microbiology/therapy ; Peromyscus/*microbiology ; Pulmonary Edema ; Southwestern United States/epidemiology ; United States/epidemiology
    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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  • 7
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    Autoantibodies to glutamate receptor GluR3 in Rasmussen's encephalitis (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-07-29
    Description: Rasmussen's encephalitis is a progressive childhood disease of unknown cause characterized by severe epilepsy, hemiplegia, dementia, and inflammation of the brain. During efforts to raise antibodies to recombinant glutamate receptors (GluRs), behaviors typical of seizures and histopathologic features mimicking Rasmussen's encephalitis were found in two rabbits immunized with GluR3 protein. A correlation was found between the presence of Rasmussen's encephalitis and serum antibodies to GluR3 detected by protein immunoblot analysis and by immunoreactivity to transfected cells expressing GluR3. Repeated plasma exchanges in one seriously ill child transiently reduced serum titers of GluR3 antibodies, decreased seizure frequency, and improved neurologic function. Thus, GluR3 is an autoantigen in Rasmussen's encephalitis, and an autoimmune process may underlie this disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rogers, S W -- Andrews, P I -- Gahring, L C -- Whisenand, T -- Cauley, K -- Crain, B -- Hughes, T E -- Heinemann, S F -- McNamara, J O -- NS17771/NS/NINDS NIH HHS/ -- NS28709/NS/NINDS NIH HHS/ -- NS30990R29/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1994 Jul 29;265(5172):648-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Salt Lake City Geriatric Research Education and Clinical Center, Veterans Affairs Medical Center, UT.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8036512" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibody Specificity ; Autoantibodies/blood/*immunology ; Brain/pathology ; Cell Line ; Child ; Disease Models, Animal ; Encephalitis/complications/*immunology/pathology/therapy ; Female ; Humans ; Male ; Plasma Exchange ; Rabbits ; Receptors, Glutamate/*immunology ; Recombinant Fusion Proteins/immunology ; Seizures/etiology/immunology
    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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  • 8
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    Fatty acylation of two internal lysine residues required for the toxic activity of Escherichia coli hemolysin (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-12-23
    Description: Hemolysin of Escherichia coli is activated by fatty acylation of the protoxin, directed by the putative acyl transferase HlyC and by acyl carrier protein (ACP). Mass spectrometry and Edman degradation of proteolytic products from mature toxin activated in vitro with tritium-labeled acylACP revealed two fatty-acylated internal lysine residues, lysine 564 and lysine 690. Resistance of the acylation to chemical treatments suggested that fatty acid was amide linked. Substitution of the two lysines confirmed that they were the only sites of acylation and showed that although each was acylated in the absence of the other, both sites were required for in vivo toxin activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stanley, P -- Packman, L C -- Koronakis, V -- Hughes, C -- New York, N.Y. -- Science. 1994 Dec 23;266(5193):1992-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Cambridge University, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7801126" target="_blank"〉PubMed〈/a〉
    Keywords: Acyl Carrier Protein/metabolism ; Acylation ; Acyltransferases/metabolism ; Amino Acid Sequence ; Animals ; Bacterial Proteins/chemistry/metabolism/*toxicity ; Bacterial Toxins/chemistry/metabolism/*toxicity ; *Escherichia coli ; *Escherichia coli Proteins ; Hemolysin Proteins/chemistry/metabolism/*toxicity ; Hemolysis ; Horses ; Lysine/metabolism ; Mass Spectrometry ; Molecular Sequence Data ; Protein Precursors/metabolism ; Sequence Alignment
    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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  • 9
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    An experimental study of inbreeding depression in a natural habitat (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1994-10-14
    Description: Inbreeding is known to lead to decreased survival and reproduction in captive populations of animals. It is also important to know whether inbreeding has deleterious effects in natural habitats. An estimate was made of the effects of inbreeding in white-footed mice, Peromyscus leucopus noveboracensis, derived from a wild population. This study demonstrates that inbreeding had a significant detrimental effect on the survivorship of mice reintroduced into a natural habitat. This effect was more severe than the effect observed in laboratory studies of the population.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jimenez, J A -- Hughes, K A -- Alaks, G -- Graham, L -- Lacy, R C -- New York, N.Y. -- Science. 1994 Oct 14;266(5183):271-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Illinois-Chicago 60680.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7939661" target="_blank"〉PubMed〈/a〉
    Keywords: Analysis of Variance ; Animals ; Body Weight ; Female ; *Inbreeding ; Likelihood Functions ; Male ; Peromyscus/genetics/*physiology ; Regression Analysis ; Survival Rate
    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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  • 10
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    Dayside ionospheric convection changes in response to long-period interplanetary magnetic field oscillations - Determination of the ionospheric phase velocity (1992)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: Ground magnetic field perturbations recorded by the CANOPUS magnetometer network in the 7 to 13 MLT sector are used to examine how reconfigurations of the dayside polar ionospheric flow take place in response to north-south changes of the IMF. During the 6-h interval in question, IMF Bz oscillates between +/- 7 nT with about a 1-h period. Corresponding variations in the ground magnetic disturbance are observed which we infer are due to changes in ionospheric flow. Cross correlation of the data obtained from two ground stations at 73.5 deg magnetic latitude, but separated by about 2 hours in MLT, shows that changes in the flow are initiated in the prenoon sector (about 10 MLT) and then spread outward toward dawn and dusk with a phase speed of about 5 km/s over the longitude range about 8 to 12 MLT, slowing to about 2 km/s outside this range. Cross correlating the data from these ground stations with IMP 8 IMF Bz records produces a MLT variation in the ground response delay relative to the IMF which is compatible with these deduced phase speeds.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 97; A12; p. 19,373-19,380.
    Format: text
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