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  • Analytical Chemistry and Spectroscopy  (7)
  • Angioplastie  (2)
  • Proteolytic degradation  (2)
  • Subcellular fractions  (2)
  • lakes  (2)
Materialart
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Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Peptides 9 (1988), S. 7-12 
    ISSN: 0196-9781
    Schlagwort(e): LHRH (GnRH) ; Proteolytic degradation ; Rat ovary ; Subcellular fractions
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Peptides 4 (1983), S. 821-825 
    ISSN: 0196-9781
    Schlagwort(e): GnRH ; Proteolytic degradation ; Rat ovary ; Subcellular fractions
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1432-2102
    Schlagwort(e): Schlüsselwörter Lebertransplantation ; Postoperative Komplikationen ; Interventionelle Radiologie ; Angioplastie ; Stents ; Drainage ; Key words Liver transplantation ; Vascular and biliary complications ; Angioplasty ; Stents ; Drainage
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary Purpose: Postoperative complications contribute significantly to the morbidity and mortality of liver transplant patients. The management of these complications requires a multidisciplinary approach in which interventional radiology plays an integral role. Indications, techniques, and results of radiological interventions in the management of the liver transplant patient are presented. Material and methods: During a 10-year period, 52 out of 420 liver transplant recipients underwent radiological interventions, including angioplasty (n = 20), embolization (n = 2), percutaneous drainage (n = 11), and biliary interventions (n = 19). Results: Nine out of ten arterial stenoses located at the anastomoses (n = 8), within the liver (n = 1) and in the coeliac trunk (n = 1) were successfully treated by balloon dilatation. Angioplasty of supra- or infrahepatic anastomotic stenoses of the IVC (n = 5) provided long-term success only in combination with stent implantation. Portal vein stenoses and chronic thrombosis were treated by balloon dilatation and stent insertion via transhepatic catheterization of the portal vein. Late strictures of bile-duct anastomoses can be managed by ante- or retrograde interventions. If biliary complications are related to inflammatory or septic problems, the prognosis of graft survival is poor. Conclusion: Interventional radiological procedures are very useful in the management of vascular and biliary complications after liver transplantation. These techniques provide a cure in many situations, and thus, surgical interventions may be avoided in selected cases.
    Notizen: Zusammenfassung Die komplexe chirurgisch-technische Operation sowie immunologische und ischämieverursachte Probleme tragen zur relativ hohen Komplikationsrate nach Lebertransplantation bei, die grundsätzlich organ- bzw. lebensbedrohlich für den Patienten sind. Interventionelle radiologische Techniken sind aufgrund ihres minimal-invasiven Charakters in der klinischen Versorgung dieser Komplikationen akzeptiert. Über 10 % der lebertransplantierten Patienten im Klinikum Großhadern sind im Verlauf mit vaskulären (n = 22) oder biliären (n = 19) postoperativen Komplikationen einer interventionellen radiologischen Behandlung zugeführt worden. Wichtigste Verfahren sind die Angioplastie (n = 20), die Katheterembolisation (n = 2), die perkutanen Drainageverfahren (n = 11) und Gallengangsinterventionen (n = 19). 20 von 22 vaskulären Interventionen wurden technisch erfolgreich durchgeführt. Für die Langzeitprognose des Organs bzw. der Patienten ist die aktuelle Organfunktion zum Zeitpunkt der Intervention entscheidend; dies entspricht weitgehend den Ergebnissen nach operativen Revisionen. Bei biliär-septischen Komplikationen ist die Organprognose als deutlich eingeschränkt anzusehen. Interventionelle Eingriffe bei Problemen der biliären Anastomosen sind als erster Therapieschritt akzeptiert und können auch in der Langzeitbeobachtung eine zufriedenstellende Problemlösung durch Ballondilatation und Prothesenimplantation gewährleisten. Interventionelle radiologische Techniken spielen in differentialtherapeutischen Überlegungen zur Behandlung postoperativer Komplikationen eine wichtige Rolle. Bei entsprechender Patientenselektion sind sie als erster Therapieschritt einzusetzen.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1432-2102
    Schlagwort(e): Schlüsselwörter Lungentransplantation ; Anastomosenkomplikation ; Angioplastie ; Bronchialstent ; Key words Lung transplantation ; Anastomotic complications ; Angioplasty ; Bronchial stenting
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary Purpose: Bronchial and arterial anastomotic stenoses are major complications after lung transplantation. Interventional techniques provide a definitive cure in certain cases. Material and methods: Three out of four patients had ischemia-related stenoses of the bronchial anastomoses postoperatively; one patient developed malacia of the bronchus main stem 1 year after transplantation. Four patients had stenoses of the arterial anastomoses, which resulted in hemodynamic instability and reduced perfusion of the graft. Results: Stent implantation in the bronchial anastomoses (n = 3) and in the main stem (n = 1) improved ventilation and oxygen saturation in all patients. The stents were incorporated by mucosal overgrowth, as demonstrated by endoscopy, as early as 6 weeks after implantation. Balloon dilatation (n = 3) and stent implantation (n = 1) were successfully performed in 4 patients with stenoses of the arterial anastomoses. The mean transstenotic pressure gradient of 9.5 mm Hg was reduced to 2.2 mm Hg after angioplasty. Lung perfusion shifted towards the grafts, as shown by 99mTc perfusion scans. Conclusion: The minimally invasive techniques of interventional radiology are very effective in the treatment of anastomotic complications after lung transplantation and may avoid surgery in certain cases.
    Notizen: Zusammenfassung Komplikationen nach Lungentransplantation betreffen in erster Linie die Bronchusanastomose und die Pulmonalarterienanastomose. Sie sind ischämieinduziert oder auf chirurgisch-technische Probleme zurückzuführen. Bei 8 von 66 transplantierten Patienten traten postoperative Stenosen an der arteriellen Anastomose (n = 4) und an der Bronchusanastomose (n = 4) auf, die jeweils zu einem organ- bzw. lebensbedrohlichen Zustand der Patienten geführt hatten. Die interventionelle Behandlung war bei allen Patienten erfolgreich; 4 Patienten wurden bei Anastomosenstenose bzw. Malazie der Bronchusanastomose mit Metallstent versorgt, 4 Patienten mit Stenosierung an der Pulmonalarterienanastomose wurden einer Ballondilatation bzw. zusätzlicher Stentimplantation zugeführt. Die Indikation zur Behandlung und die Überprüfung des Dilatationsergebnisses wurde anhand der Stenosegradienten ermittelt, zur ausreichenden Erweiterung war eine Ballonkaliberstärke von 15 bis 20 mm erforderlich. Indikation zur Stentimplantation war eine elastische Instabilität bei einem Patienten. Der minimal-invasive Eingriff bei schwerkranken Patienten, die effiziente und komplikationslose Therapie und der erfolgreiche Langzeitverlauf sprechen dafür, bei Anastomosenproblemen nach Lungentransplantation interventionelle radiologische Verfahren primär einzusetzen.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Water, air & soil pollution 85 (1995), S. 641-646 
    ISSN: 1573-2932
    Schlagwort(e): Monitoring ; fish stocks ; lakes ; rivers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract The Norwegian Monitoring Programme for Long-Range Transported Air Pollutants started in 1980. The biological part of this programme includes besides invertebrate studies in streams, (i) fish community status in lakes by means of interviews, test-fishing in lakes by using standard gill-net series, recruitment studies of brown trout in inland streams, and juvenile stock assess and monitoring of fish kills in salmon rivers. Damaged fish stocks are recognized within a land area of 51,500 km2 in southern Norway and 30 km2 in northern Norway. At least 6,000 lake-dwelling fish stocks have either been lost or are at various stages of reduction. Brown trout (Salmo trutta) is the most widespread and abundant species of fish in Norwegian watersheds, and is also most severe affected by acidification. More recently, there are some indications of an increase in the abundance of brown trout in some areas. However, analysis of age structure in lakes, and fry densities in streams in such areas revealed large annual variations in recruitment rate, which indicates unstable water chemical conditions. Atlantic salmon (Salmo salar) is virtually extinct in 25 rivers in southernmost, southwestern and western Norway.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 6
    ISSN: 1573-2932
    Schlagwort(e): northern Norway ; lakes ; acidification ; brown trout ; Arctic charr
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract In this paper we document the effects of acidification on fish populations in lakes in Sør-Varanger near the Russian border in northern Norway. We used questionnaires in order to assess the current status and distribution of different fish species, and conducted test-fishing to determine relative abundance (CPUE-T) and age structure. Acidification of surface waters in this area is due to emissions of SO2 from smelters on the Kola Peninsula in Russia (Nikel and Zapoljarnij) between 10 and 30 km from the Norwegian border. Sulphur deposition in Sør-Varanger ranges from 0.6 to 2.0 g S m-2 yr-1, which is similar to levels in the most acidified areas in southern Norway. However, a dominant fraction of the acidic deposition reaches the ground in particulate form during summer and autumn. Coastal areas in Sør-Varanger receive small amounts of precipitation; the annual mean is 580 mm. We obtained fish status from 401 lakes, about 40% of all lakes larger than 3 ha, which were inhabited by 236 and 293 populations of Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta), respectively. The extent of fish damage was small as only three populations of Arctic charr were lost, while three populations of Arctic charr and eight populations of brown trout were at various stages of reduction. Damaged and lost fish populations were identified in smaller lakes at relatively high elevations (172–349 m) in six areas in the Jarfjord Mountains, covering a land area of 30.0 km2. Most of the damage probably occurred during the 1970s and 1980s. In lakes that supported or had supported Arctic charr and brown trout, we found a significant relationship between CPUE-T, and acid neutralizing capacity (ANC) and pH, and also between alkalinity and the concentration of inorganic Al for brown trout. In both species, the catch of fish in age groups 1+ and 2+ (CPUE-R) increased significantly with CPUE-T. Affected populations typically exhibited irregular age composition, and age-classes were missing, indicating that reductions in fish populations were due to recruitment failure. The limited fish damage is related to relatively good catchment resistance to acidic inputs, small amounts of wet deposition as well as precipitation. These conditions result in low accumulation of acidic compounds, producing less acidic run-off waters and few episodes of unfavourable water quality.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 7
    Digitale Medien
    Digitale Medien
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 15 (1986), S. 241-243 
    ISSN: 0049-8246
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: A simple model of the x-ray Kα emission spectrum of copper metal has been proved to fit the experimental distribution curve of diffracted intensity fairly well, after correcting for profile distortion due to the spectrometer geometry and the diffraction process. Each Kα line can be described by a doublet of overlapping dispersion curves of different height and width. Although the physical relevance of the model is not clear at present, the simple analytical expression of the spectrum may be useful for some problems in x-ray diffractometry.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 25 (1994), S. 457-462 
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Resonance-enhanced multiphoton ionization (REMPI) of 16O2X3∑g - (ν = 0) through (3sσg)d 1Πg, (ν = 0) by using (2 + 1) one-colour photons is reported. This REMPI process, already observed and analysed by other authors at low pressure and low rotational temperature with mass spectrometry detection, is used to test our first detector of ionizations. Experimental difficulties have led to the design of an original arrangement of electrodes to collect electrons at room temperature and 1 Torr pressure of static molecular oxygen. A calculated spectrum is compared with the observed REMPI spectrum. The calculation uses the polarizability tensor and takes into account the competition between ionization and predissociation of the Rydberg state.
    Zusätzliches Material: 2 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 21 (1990), S. 803-808 
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Self-broadened widths of 28SiH4 in the ν1 Q-branch have been measured at room temperature (295 K) using high-resolution stimulated Raman Spectroscopy. These collisional widths have been obtained by fitting a super-position of Voigt profiles to the experimental spectra in the pressure range 28-154 Torr. No evidence for line mixing within the tetrahedral components of a Q(J) line has been found. The line broadening coefficients for J up to 13 depend weakly on the rotational quantum number. The mean value is 103.7 × 10-3 cm-1 atm-1.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 21 (1990), S. 809-812 
    ISSN: 0377-0486
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Notizen: Nitrogen spectra of the Q-branch of the fundamental and the first hot bands were recorde with a high-resolution stimulated Raman spectrometer at atmospheric pressure and ca. 1300 K. The absolute frequencies of the Raman lines were measured with high accuracy, leading to a refinement of spectroscopic constants. A temperature estimation was also performed from the Raman intensities.
    Zusätzliches Material: 1 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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