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  • 1
    Electronic Resource
    Electronic Resource
    Seismological models for mining-induced seismic events (1989)
    Springer
    Pure and applied geophysics 129 (1989), S. 513-521 
    Details
    ISSN: 1420-9136
    Keywords: Mine-induced seismicity ; source models ; barrier/asperity models ; seismic moment ; rockbursts ; damaged area
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract One possibility to estimate and to interpret the source parameters of low-stress drop seismic events to use the barrier or the asperity model. These models serve as the description of seismic events in a in which a horizontal room and pillar mining method is used in great depth. An additional macroseismic parameter, the destroyed or damaged area in the mine, allows the estimation of the real static stress drop of mining-induced seismic events. This stress drop, derived from a simplified barrier-or asperity-model, appears to be a constant and a characteristic parameter for a given source region. On this base, a relation between the underground destruction or damages and the seismologically estimated parameters is derived and is used for the classification of the mining-induced seismic events.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00874522
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  • 2
    Electronic Resource
    Electronic Resource
    The Erzincan (Turkey) Earthquake (Ms 6.8) of March 13, 1992 and its Aftershock Sequence (1998)
    Springer
    Pure and applied geophysics 152 (1998), S. 465-505 
    Details
    ISSN: 1420-9136
    Keywords: Key words: Erzincan earthquake, North Anatolian fault, pull-apart basin, aftershocks.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract —The Erzincan strike-slip earthquake of March 13, 1992 ruptured a section of the North Anatolian fault (NAF) at the northern margin of the Erzincan basin. The focal depth of about 10 km was less than given by ISC and NEIC. Erzincan and the surrounding villages were considerably damaged. In the Erzincan basin and in the neighbouring mountains a seismic network of ten stations was installed. It was operating continuously from March 21 through June 16, 1992. More than 3,000 aftershocks were recorded of which 505 could be located. The spectral parameters of 394 and the fault-plane solutions of 53 aftershocks were determined. For the given region the frequency dependent coda Q was derived as Q c = 122 f 0.68. The aftershock area increased with time, reflecting the process of stress redistribution. Some events clustered in the immediate vicinity of the town of Erzincan close to the epicentre of the main event and seem to trace the NAF. Their source mechanism is similar to that of the main event (strike slip). About 150 aftershocks clustered in the southeastern part of the Erzincan basin where a concentration of the events in a small volume of 5 × 5 × 3 km3 was observed. The majority of fault-plane solutions available for these aftershocks showed a normal faulting mechanism with an east-west directed extension. Most of the aftershocks southeast of the basin clustered between two lineaments that were mapped by satellite images. The P-wave velocity below the Erzincan basin, derived from travel-time residual analysis, is lower compared to areas NE and SW of the basin. Three-dimen sional stress modelling of the Erzincan region qualitatively explains the occurrence of the aftershocks southeast of the basin. The calculated displacement distribution which exhibits the north-westward motion of the basin and tension at its southeastern margin, caused by the Erzincan earthquake, is in agreement with derived fault-plane solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000240050163
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  • 3
    Electronic Resource
    Electronic Resource
    Prospektiver Vergleich der diagnostischen Wertigkeit von Zytologie und Immunzytologie bei thorakoskopisch-bioptisch untersuchten Pleuraergüssen (1987)
    Springer
    Journal of molecular medicine 65 (1987), S. 400-406 
    Details
    ISSN: 1432-1440
    Keywords: Pleural effusion ; Thoracoscopy ; Immunocytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two issues have been elaborated: (1) the value of immunocytochemistry in the diagnosis of pleural effusions, and (2) the reactivity of the investigated antibodies with different classes of cells in pleural effusions. Effusions of unknown origin from 38 patients were investigated using thoracoscopy, pleural biopsies, conventional cytology, and immunocytochemistry. The following antibodies were used: those monoclonal against various leukocyte antigens, macrophage antigens, epithelial membrane antigen (EMA), various cytoskeleton antigens, and melanoma antigens; those polyclonal against CEA and ferritin. All of the techniques used showed 18 patients (48%) as having a tumor-cell negative effusion. A pleural tumor with a malignant effusion showed in 13 patients (34%); in 12 of these immunocytochemistry also revealed tumor cells. Seven patients (18%) had a tumor of the pleura with a tumor-cell negative effusion; in 2 of these immunocytochemistry revealed a tumor-cell positive effusion. There was no difference with regard to the number of NK cells in patients with inflammation of the pleura and negative cytology and patients with tumor of the pleura and malignant effusion (3% vs 4.5%). Tumor cells were mainly stained by EMA, cytokeratin, and CEA. CEA was the only antibody to be tumor-cell specific, while EMA and cytokeratin were expressed by mesothelial cells also. The antibody against ferritin was a significant marker for mesothelial cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01715761
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  • 4
    Electronic Resource
    Electronic Resource
    An automatic correction of the photoefficiency in Ge(Li)-spectrometry
    Amsterdam : Elsevier
    Nuclear Instruments and Methods 131 (1975), S. 417-423 
    Details
    ISSN: 0029-554X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0029-554X(75)90427-9
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    Paper (German National Licenses)
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