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  • 1995-1999  (31)
Document type
Keywords
Publisher
Language
Years
Year
  • 1
    Online Resource
    Online Resource
    Mathematical models of early diagenetic processes : impacts on the biogeochemical environment of the deep-sea floor (1999)
    Kiel
    Details Availability
    Keywords: Tiefseeboden ; Dissertation ; Diagenese ; Tiefseesediment ; Peru-Becken ; Hochschulschrift
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource ( 160Seiten = 14MB) , graph. Darst., Kt
    URL: https://oceanrep.geomar.de/id/eprint/49626/
    Language: English
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  • 2
    Media Combination
    Media Combination
    Einführung in geomathematische Verfahren und deren Programmierung (1996)
    Stuttgart : Enke
    Details Availability
    Keywords: mathematics ; computer programs ; geosciences ; Geostatistik ; TURBO-PASCAL 6.0 ; Computerkartographie ; Korngrößenanal ; Stoffübertragung ; Medienkombination ; Methoden und Techniken der Geowissenschaften ; Geowissenschaften ; Datenverarbeitung ; Software ; Geostatistik ; TURBO-PASCAL 6.0 ; Computerkartografie ; TURBO-PASCAL 6.0 ; Korngrößenanalyse ; TURBO-PASCAL 6.0 ; Grundwasser ; Stoffübertragung ; TURBO-PASCAL 6.0
    Type of Medium: Media Combination
    Pages: Medienkombination , mit Disk
    ISBN: 3432273916
    URL: https://external.dandelon.com/download/attachments/dandelon/ids/DE00492CF0009EDE1CB1AC12577C4006222EF.pdf
    Language: German
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  • 3
    Article
    Article
    Prozessorientierte Modellierung frühdiagenetischer Reaktionen in Tiefsee- und Flachwassersedimenten (1997)
    Associated volumes
    Details Availability
    In: Geowissenschaften, Berlin : Ernst & Sohn, 1988, 15(1997), 9, Seite 292-295, 0933-0704
    In: volume:15
    In: year:1997
    In: number:9
    In: pages:292-295
    Type of Medium: Article
    Pages: Ill., graph. Darst.
    ISSN: 0933-0704
    Language: German
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  • 4
    Book
    Book
    Bilanzierung und prozeßorientierte Modellierung geochemischer Stoffkreisläufe in Oberflächensedimenten (1996)
    Details Availability
    Keywords: Hochschulschrift
    Type of Medium: Book
    Pages: 193 Bl , Ill., graph. Darst., Kt
    Language: German
    Note: Kiel, Univ., Habil.-Schr., 1997
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  • 5
    Electronic Resource
    Electronic Resource
    Reply to the Editor (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiovascular electrophysiology 9 (1998), S. 0 
    Details
    ISSN: 1540-8167
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8167.1998.tb00921.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Emergency Placement of Platinum Coils to Prevent Cardiac Tamponade After Wire Perforation of an Occluded Venous Coronary Bypass Graft (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of interventional cardiology 10 (1997), S. 0 
    Details
    ISSN: 1540-8183
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A case is reported of a patient with impending cardiac tamponade due to vessel perforation following balloon angioplasty of an occluded venous bypass graft. Prolonged balloon inflation failed to seal the perforation. Leakage was controlled immediately by the delivery of two platinum coils into the perforation. In case of a vessel perforation during an attempt to recanalize an occluded coronary artery bypass, placement of intracoronary platinum coils to seal the perforation may prevent the development of cardiac tamponade.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8183.1997.tb00058.x
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Clinical Recurrences After Successful Accessory Pathway Ablation: (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiovascular electrophysiology 8 (1997), S. 0 
    Details
    ISSN: 1540-8167
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Dormant Accessory Pathways. Introduction: Recurrence of clinical symptoms after radiofrequency catheter ablation of an accessory atrioventricular pathway (AP) may be due to the late manifestation of an additional AP that was not detected during the initial ablation session. It was the purpose of this study to elucidate the phenomenon of these “dormant” APs. Methods and Results: Of 1280 consecutive patients who underwent radiofrequency catheter ablation of an AP, 54 patients (4.2 %) developed clinical symptoms postablation, necessitating a repeat ablation session. Recurrence of conduction over the AP targeted al the initial ablation session was found in 45 patients, whereas in the other 9 patients (0.7%) the manifestation of a previously unnoticed AP had caused symptom recurrence. Retrospective analysis of the data from these patients’ ablation sessions revealed that the late manifesting AP was ablated at a site clearly different from that of the initially targeted AP, and that the manifestation of conduction over a previously “dormant” AP occurred significantly later than the recovery of a presumably ablated AP. Seven (78%) of the 9 “dormant” APs were concealed, and none exhibited decremental conduction properties. Conclusion: The incidence of clinical recurrences mediated by the late manifestation of conduction over a previously “dormant” AP is low. The lack of an anatomic vicinity of these predominantly concealed APs with the initially targeted AP and the lack of evidence for their presence during the initial ablation session suggest intermittent conduction as the most likely explanation for their late manifestation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8167.1997.tb01033.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Mapping of the Coronary Sinus and Great Cardiac Vein Using a 2-French Electrode Catheter and a Right Femoral Approach (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of cardiovascular electrophysiology 8 (1997), S. 0 
    Details
    ISSN: 1540-8167
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Coronary Sinus Mapping. Introduction: Local electrogranis recorded from the coronary sinus and great cardiac vein provide important information for the diagnosis of various arrhythmias and identification of target sites for ablation of left-sided accessory pathways. One limitation of present techniques is the inability, in many cases, to probe the great cardiac vein at the anterior mitral annulus. We tested the feasibility of a new technique for catheterization of the coronary sinus and great cardiac vein by means of a small-diameter electrode catheter advanced via a right femoral approach through an angiography catheter. Methods and Results: Of 22 patients (12 men and 10 women; ages 44.5 ± 13.4 years) undergoing radiofrequency ablation of a supraventricular tachycardia, cannulation of the coronary sinus orifice using a 6-French 1L or 2L Amplatz catheter was achieved in 20 patients (91%) within 0.9 ± 0.6 minutes; after cannulation, a 2-French octapolar electrode catheter with a soft radiopaque tip and a 3-mm interelectrode distance could he advanced in all 20 patients through the guiding catheter to the great cardiac vein in the anterior region of the AV sulcus within 0.8 ± 0.7 minutes. Atrial and ventricular local potentials were recorded all along the mitral annulus during sinus rhythm, atrial and ventricular pacing, or supraventricular tachycardia. Variation of local potential amplitude never exceeded 20% of the mean and presented similar stability at all annular regions. The arrhythmogenic substrate was identified in all patients. Of 18 patients with 21 left-sided accessory pathways, an accessory pathway potential could he recorded at the ablation site by one or more adjacent epicardial electrode pairs in 10 pathways. No procedure-related complications were observed. Conclusions: The technique introduced in this study proved feasible in 91% of patients. Its main advantages are the simplicity and rapidity of coronary sinus cannulation and the ability to advance the electrode catheter to the anterior cardiac vein. In addition, closely spaced bipolar electrograms resulted in enhanced atrial, ventricular, and accessory pathway potential resolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8167.1997.tb00802.x
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    Paper (German National Licenses)
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  • 9
    facet.materialart.
    Unknown
    Prozessorientierte Modellierung frühdiagenetischer Reaktionen in Tiefsee- und Flachwassersedimenten (1997)
    Ernst & Sohn
    In:  Geowissenschaften, 15 (9). pp. 292-295.
    Details
    Publication Date: 2017-06-29
    Description: Diagenetic processes in surface sediments are important for the burial efficiency of primary produced organic carbon and further interpretation of paleo-environments based on geochemical proxies. Application of numerical models allows the quantitative description of these processes. The models provide a means for evaluating the complex biological and geochemical interactions at the seafloor and allow the computation of organic carbon degradation rates and fluxes. Modeling seasonal variations of early diagenetic processes are promising for an improved understandingof the response of the seafloor to short term natural variations of anthropogenic impacts to this marine environment. Recycling of nutrients or alterations of the redox zonation in the sediment can be predicted by application of numerical models.
    Type: Article , NonPeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - without review
  • 10
    facet.materialart.
    Unknown
    Geochemistry at a sealed deep-sea borehole of the Cascadia Margin (1998)
    Elsevier
    In:  Marine Geology, 148 . pp. 9-20.
    Details
    Publication Date: 2017-06-27
    Description: The deep-sea borehole seal CORK was deployed for the first time on a modern accretionary prism during ODP Leg 146 to the Cascadia Margin. Ten months after the deployment the fluid flow and geochemistry of the borehole fluids was investigated during several dives by DSRV Alvin. The chemical analysis of the borehole fluids revealed methane concentrations of more than 3.5 mM, whereas oxygen and dissolved ions as Cl, NO3, or PO4 are still close to the ambient seawater composition. The exceedingly high methane content measured at the top of the sealed borehole and the observed degassing during the ascent of the submersible indicates that the sampled fluid was initially saturated or close to saturation with respect to CH4. The hydrocarbons are characterized by ratios of 170–200 and δ13C values of − 59.5 to − 62.4%o which indicates a considerable admixture of thermogenic hydrocarbon gases. The occurrence of methane of partly thermogenic origin demonstrates that CH4 enters the sealed borehole in the lower, perforated section (94–178 mbsf) and accumulates at the top of the borehole. This suggests the occurrence of free gas within the encapsulated borehole. Considering the stability field of CH4-hydrates, the formation of these ice-like structures may take place and potentially results in a clogging of the top of the borehole. Such precipitates could result in a decoupling of the top of the borehole from the hydraulic and geochemical regime of the accretionary complex, an important aspect for future plans of CORK deployments.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/S0025-3227(98)00016-4
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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