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  • 1995-1999  (12)
  • 1997  (12)
  • 1
    Electronic Resource
    Electronic Resource
    Case 23 nomination of precursory seismic quiescence as a significant precursor (1997)
    Springer
    Pure and applied geophysics 149 (1997), S. 79-113 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Conclusions Several cases of extremely strong quiescences have been investigated in great detail, and it was found that they are statistically highly significant and that they cannot be reasonably explained by catalog heterogeneity. Several additional cases of quantitatively measured quiescence have been documented. The method of measuring quiescence has progressed from using visual means to using a quantitative approach, and the understanding of the noise sources has significantly advanced during the last few years. Therefore I feel that quiescence is a real phenomenon and the method to detect it has matured to a point that is acceptable for the List of Significant Precursors, although considerably more work needs to be done to understand this parameter and its role in the earthquake generation process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00945162
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary X-ray studies of rhamnogalacturonase A from Aspergillus aculeatus (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 105-107 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Recombinant rhamnogalacturonase A from Aspergillus aculeatus has been crystallized and X-ray diffraction data has been collected. Crystals were grown by the hanging-drop vapour-diffusion technique, under the conditions 10% PEG 8000, 0.05 M KH2PO4 and 0.1 M sodium acetate buffered at pH 3.5. The crystals diffract beyond 2.0 Å resolution and belong to one of the orthorhombic space groups I212121 or I222, with the unit-cell parameters a = 62.9, b = 125.4 and c = 137.0 Å. There is one molecule in the asymmetric unit and a solvent content of approximately 54%. The enzyme is highly glycosylated corresponding to 5.9 kDa.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996010785
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The First Structure at 1.8 Å Resolution of an Active Autolysate Form of Porcine α-Trysoin (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 311-315 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The first crystal structure of an active autolysate form of porcine α-trypsin (APT), a two-chain molecule obtained from the limited autolysis of porcine β-trypsin at position Lys145–Ser146, has been determined. APT crystallizes in space group P212121 with one protein molecule in the asymmetric unit. The structure was solved by molecular replacement followed by refinement using X-PLOR to an R factor of 0.200 and an Rfree of 0.285 for 8.0–1.8 Å data with r.m.s deviations from ideal values of 0.01 Å and 1.7° for bond lengths and bond angles, respectively. Comparison with inactive autolysate porcine ε-trypsin (EPT) and porcine β-trypsin in complex with bittergourd trypsin inhibitor (MCT) revealed a small but systematic directional chain shift around the active-site residues from APT to EPT to MCT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444997000358
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Recording sagittal condylar angles using a mandibular facebow (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 24 (1997), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: summary The aim of this study was to determine the average sagittal condylar inclination angles of dentate subjects using a mandibular facebow with pencil tracing styli, to relate these angles to values assigned to articulators, and to assess the repeatability accuracy of drawing a tangent to a traced curve. The right and left sagittal condylar inclination angles of 103 subjects were recorded using a mandibular facebow with pencil tracing styli which marked a graph card during protrusive excursions. Tangents to the tracings were measured with a protractor allowing assessment of reproducibility. The mean left and right sagittal condylar inclination angles were 32° and 31.5°, respectively, with no significant differences (P=0.609). Individual right and left measurements within each group showed significant differences (P= 0.0000). The mean of the tangents drawn through three sagittal condylar angle tracings by 10 operators was 33.3°, and the mean of 10 tangents drawn through the same three tracings by one of the authors was 32.9°, with no significant difference (P= 0.634). The average sagittal condylar inclination angles found in this study are in agreement with those reported in the literature. In fixed sagittal condylar angle articulators 30° appear to be an appropriate setting. The reproducibility of this method of recording sagittal condylar inclination angles was found to be accurate for the individual operator and between operators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1997.tb00293.x
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  • 5
    Electronic Resource
    Electronic Resource
    Mid-infrared In1−xAlxSb/InSb heterostructure diode lasers (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 931-933 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Stimulated emission at 5.1 μm was demonstrated from a broad area In1−xAlxSb/InSb heterostructure diode laser grown by molecular beam epitaxy. For a 5 μs pulse and a 500 Hz repetition rate the threshold current density was 1480 A cm−2 at 77 K and the maximum operating temperature was 90 K at a current density of 2680 A cm−2. Maximum peak power output was estimated to be 28 mW per facet at 77 K and 4500 A cm−2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118444
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A Comparative Study of Normal B Cells and the EBV-Positive Burkitt's Lymphoma Cell Line, Raji, as Activators of the Complement System (1997)
    Oxford, UK : Blackwell Science Ltd
    Scandinavian journal of immunology 46 (1997), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Contradictory reports regarding the ability of complement receptor type 2 (CR2,CD21) on normal B cells to activate complement (C′) via the alternative pathway (AP), prompted us to compare the performance of human peripheral blood B cells and the Epstein–Barr virus-positive Burkitt's lymphoma cell line, Raji (a well characterized AP activator) by using flow cytometry. Measured in terms of the membrane deposition of C3 fragments per cell, Raji cells were significantly (6- to 26-fold) more effective as complement activators than were normal B cells. Raji cells were also found to express approximately four to five times as many CR2 as normal B cells. In addition, they distinguished themselves by displaying a greater Ca2+-dependent activation, with pooled normal human sera (NHS) as the complement source, and by degrading unprotected C3b fragments from iC3b to C3dg/C3d at a significantly lower rate than the B cells. The Ca2+ dependency of Raji cell activation was found to be partially a result of classical pathway (CP) triggering by specific antibodies in the NHS, although other triggering mechanisms may also be involved. If the influence of these variations between Raji cells and normal B cells was excluded, by relating deposition of anti-C3d-reactive fragments, during AP activation, to the number of CR2 expressed, the difference in performance between the two cell types was found to be insignificant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3083.1997.d01-122.x
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  • 7
    Electronic Resource
    Electronic Resource
    Activity of grepafloxacin against respiratory isolates ofStreptococcus pneumoniae (1997)
    Springer
    European journal of clinical microbiology & infectious diseases 16 (1997), S. 622-623 
    Details
    ISSN: 1435-4373
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447932
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Renal tubular dysfunction in multiple acyl-CoA dehydrogenase deficiency (1997)
    Springer
    Journal of inherited metabolic disease 20 (1997), S. 604-605 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005371428912
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    A case of the carbohydrate-deficient glycoprotein syndrome type 1 (CDGS type 1) with normal phosphomannomutase activity (1997)
    Springer
    Journal of inherited metabolic disease 20 (1997), S. 817-827 
    Details
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The carbohydrate-deficient glycoprotein syndrome (CDGS) is a group of disorders characterized biochemically by abnormal glycosylation of serum and cellular glycoproteins. It has been classified into four forms on the basis of the isoelectric focusing pattern of serum transferrin and differences in clinical presentation. A deficiency of phosphomannomutase (PMM) has been reported in most patients with type 1. Seven of our eight CDGS patients, classified clinically as type 1, were shown to have a deficiency of phosphomannomutase in their fibroblast or lymphoblastoid cells (0.04-0.2 nmol/min per mg, compared with a control range of 1.0-2.1 nmol/min per mg). The eighth patient, who had many clinical features of the severe neonatal form of CDGS type 1, but lacked definite signs of CNS and ocular involvement, had a normal phosphomannomutase activity in his fibroblasts. There were approximately equal amounts of disialo- and tetrasialotransferrin and only a trace amount of asialotransferrin in the serum and ascitic fluid of this patient. The disialo- and tetrasialotransferrin isoforms were purified by ion-exchange chromatography and analysed by SDS-PAGE. The disialotransferrin had a lower molecular mass than the tetrasialotransferrin, consistent with the absence of an N-linked glycan. The N-linked glycans released enzymically from both isoforms consisted exclusively of disialylated biantennary chains, suggesting that disialotransferrin results from underglycosylation, as in the PMM-deficient CDGS type 1 patients. It is concluded that the clinical and biochemical phenotype in CDGS type 1 can result from more than one basic defect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005380003902
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  • 10
    Electronic Resource
    Electronic Resource
    Suspended particulates in the Jamaican atmosphere (1997)
    Springer
    Environmental geochemistry and health 19 (1997), S. 0-0 
    Details
    ISSN: 1573-2983
    Keywords: Atmospheric particulates ; bromine ; Jamaica ; lead
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Medicine
    Notes: Abstract The results of a survey of air particulates at 23 sites across Jamaica for total suspended particulates (TSP), Al, Br, Cl, Na, Pb, and V, by instrumental neutron activation analysis (INAA) and X-ray fluorescence analysis (XRF) are reported. The geometric mean of TSP values, 35 g m-3, is well within the World Health Organisation's standard of 60 g m-3 for TSP, but in areas of high vehicular traffic density the TSP values exceeded this limit. The correlation coefficient between Br and Pb concentrations in the particulates was 0.92 and the Br/Pb ratio of 0.38 compares well with a ratio of 0.39 found in commercial petrol indicating that the exhaust from vehicular traffic is the major source of Pb in atmospheric particulate matter in Jamaica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018481901288
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