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  • GEOPHYSICS  (12)
  • Animals  (4)
  • ddc:330
  • Spacecraft Design, Testing and Performance
  • 1990-1994  (16)
  • 1
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    Hantavirus pulmonary syndrome: an emerging infectious disease (1993)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1993-11-05
    Beschreibung: 〈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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Autoantibodies to glutamate receptor GluR3 in Rasmussen's encephalitis (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1994-07-29
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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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
    Publikationsdatum: 1994-12-23
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    An experimental study of inbreeding depression in a natural habitat (1994)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1994-10-14
    Beschreibung: 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〉
    Schlagwort(e): Analysis of Variance ; Animals ; Body Weight ; Female ; *Inbreeding ; Likelihood Functions ; Male ; Peromyscus/genetics/*physiology ; Regression Analysis ; Survival Rate
    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)
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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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
    Publikationsdatum: 2011-08-24
    Beschreibung: 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.
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research (ISSN 0148-0227); 97; A12; p. 19,373-19,380.
    Format: text
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  • 6
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    Observations of Earthward and tailward propagating flux rope plasmoids: Expanding the plasmoid model of geomagnetic substorms (1994)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-13
    Beschreibung: A survey of Interplanetary Monitoring Platform (IMP 8) magnetometer data for plasmoid signatures during magnetospheric intervals from 1981 through 1983 found 16 plasmoids and 37 traveling compression regions as well as two earthward propagating flux ropes and 19 south-north bipolar lobe signatures. The properties of these relatively near-Earth plasmoids, traveling compression regions, and earthward propagating flux ropes and a qualitative model for their formation are presented. The plasmoids have estimated sizes, durations, magnetic field signatures, downtail velocities, and substorm associations very similar to those of the plasmoids identified in International Sun-Earth Explorer (ISEE) 3 deep-tail observations. The occurrence frequency of these near-Earth plasma sheet plasmoids is significantly smaller than that of plasmoids found in the mid- and deep tail with ISEE 3. The earthward propagating flux ropes are characterized by a south-north bipolar turning in the Geocentric Solar Magnetospheric (GSM) B(sub z) component, are localized near the noon-midnight meridional plane, and are strongly correlated with interplanetary magnetic field B(sub z) north and small isolated high latitude geomagnetic substorms. These events are also apparently very rare and/or spatially localized. We propose that these structures are 'proto-plasmoids,' i.e., plasmoids for which near-Earth magnetic reconnection stopped before all the closed plasma sheet field lines were reconnected. The proto-plasmoids are then 'trapped' inside closed magnetic field lines and propagate earthward owing to the effect of the distant X-line's earthward plasma flow. We suggest that the two different 'types' of plasmoids are due to the different energy states of the magnetosphere during periods of southward and northward interplanetary magnetic field.
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research (ISSN 0148-0227); 99; A1; p. 183-198
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Small-scale electrodynamics of the cusp with northward interplanetary magnetic field (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-12
    Beschreibung: Possible low-altitude field signatures of merging occurring at high latitudes during a period of strong northward directed interplanetary magnetic field are reported. Large electric and magnetic field spikes detected at the poleward edge of the magnetosheathlike particle precipitation are interpreted as field signatures of the low-altitude footprint of such merging line locations. A train of phase-shifted, almost linearly polarized electric and magnetic field fluctuations was detected just equatorward of the large electromagnetic spike. It is argued that these may be due to either ion cyclotron waves excited by penetrating magnetosheath ions or transient oscillations in the frame of convecting plasma, brought about by the sudden change in the flow at the magnetospheric end of the field line.
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research (ISSN 0148-0227); 97; A5 M
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
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    On the formation and evolution of plasmoids - A survey of ISEE 3 Geotail data (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-08-28
    Beschreibung: The magnetic and plasma properties of plasmoids, their evolution with distance downtail, and the effect of the direction of the IMF on the plasmoid magnetic configuration were investigated by examining the ISEE 3 magnetometer and electron plasma measurements of the 1983 ISEE 3 Geotail Mission. Both data sets were systematically examined for the presence of bipolar magnetic signatures that occur while ISEE 3 was in the plasma sheet. Results revealed 366 events consistent with this signature while ISEE was in the plasma sheet. It was found that plasmoids are characterized by high-speed plasma flow and that many of them have a well-defined magnetic core field characterized by a field strength maximum at the center of the pass through the structure. Once completely formed, plasmoids are relatively stable. It was found that the size, velocity, magnetic core strength, and Bz field amplitude of plasmoids do not depend on the distance downtail beyond -100 R(E).
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research (ISSN 0148-0227); 97; A12; p. 19,259-19,282.
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
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    Plasmoid observations in the distant plasma sheet boundary layer (1992)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-08-28
    Beschreibung: Substorm associated large amplitude bipolar magnetic events occurred when ISEE 3 was in the distant geotail's plasma sheet boundary layer (PSBL). The characteristics of these events, their substorm association and their possible source mechanisms are examined. We propose that these PSBL events are signatures of a passing plasmoid in the plasma sheet, analogous to the traveling compression region model in the geomagnetic lobes.
    Schlagwort(e): GEOPHYSICS
    Materialart: Geophysical Research Letters (ISSN 0094-8276); 19; 19; p. 1911-1914.
    Format: text
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  • 10
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    Plasmoids as magnetic flux ropes (1991)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-12
    Beschreibung: A magnetic flux rope model is developed and used to determine whether the principal axis analysis (PAA) of magnetometer signatures from a single satellite pass is sufficient to obtain the magnetic topology of plasmoids. The model is also used to determine if plasmoid observations are best explained by the flux rope, closed loop, or large-amplitude wave picture. It was found that the principal axis directions is highly dependent on the satellite trajectory through the structure and, therefore, the PAA of magnetometer data from a single satellite pass is insufficient to differentiate between magnetic closed loop and flux rope models. Results also indicate that the flux rope model of plasmoid formation is well suited to unify the observations of various magnetic structures observed by ISEE 3.
    Schlagwort(e): GEOPHYSICS
    Materialart: Journal of Geophysical Research (ISSN 0148-0227); 96; 14
    Format: text
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