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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 48 (1993), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Analysis of beat-to-beat fluctuations of heart rate and blood pressure is a promising new approach to the clinical diagnosis and management of alterations in cardiovascular regulation. We investigated the effects of three induction agents on beat-to-beat heart rate and blood pressure fluctuations in man. Beat-to-beat fluctuations were analysed by spectral analysis. Two spectral areas are of main interest. One area is centred on the respiratory frequency and shifts with changes in respiratory rate (High Frequency area). These high frequency flucuations in heart rate are caused by respiratory-induced blood pressure fluctuations, mediated by the vagus nerve through the baroreflex mechanism. Variability in the Low Frequency area, which occurs between 0.06 and 0.12 Hz is considered to be related to haemodynamic fluctuations due to the sympathetic baroreflex control loop of vasomotor activity and heart rate. Results from our study indicate that thiopentone, etomidate and propofol show considerable differences in their effects on beat-to-beat variability of heart rate and blood pressure. These differences can be explained by their specific effects on the cardiovascular system.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 49 (1994), S. 0 
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 50 (1994), S. 178-180 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 24 (1991), S. 190-193 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The application of single-board microcomputers as programmable interfaces simplifies the construction of complex diffractometer control units. The amount of hardware components of the control units is reduced and the structure of the circuits is easy to survey. These intelligent multipurpose single-board microcomputers unburden the personal computer and simplify the development of the diffractometer measuring program. The presented solution is based on an Atari 1040 STF. The concept, however, can be applied to any type of personal computer.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 25 (1992), S. 440-443 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The Laue technique shortens the time required to measure integrated intensities for X-ray structure determination. The Laue diffractometer presented here is a δ-circle diffractometer equipped with an ordinary low-cost photomultiplier-scintillation-crystal combination. Stepper-motor control devices and the multichannel analyzer (MCA) were originally developed for this particular purpose. These components are equipped with efficient microprocessor technology. A personal computer with graphic facilities is used for processing. Using special procedures in the analysis and the measurement of data, the disadvantages of a scintillation counter may be avoided or reduced.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 24 (1991), S. 1060-1062 
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: The application of an ultrafast analogue-to-digital converter and a high-performance-single board microcomputer permits the construction of a very fast and versatile multichannel analyser (MCA) at low cost. With the powerful instruction set of the microprocessor MC 68000, an intelligent all-round MCA could be realised with useful correction software on the single-board microcomputer. This MCA was used successfully for a data collection by Laue techniques with a four-circle diffractometer.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 16 (1992), S. 618-619 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 7 (1993), S. 534-534 
    ISSN: 1432-2218
    Keywords: Laparoscopy ; Colon resection ; Rotation ; Terminal ileum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This case report describes rotation of the terminal ileum in a patient who had a laparoscopic right hemicolectomy. To prevent this complication, the terminal ileum should be inspected laparoscopically for rotation before exteriorization of the terminal ileum and, in addition, after completion of the anastomosis.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 375 (1990), S. 166-170 
    ISSN: 1435-2451
    Keywords: En-bloc esophagectomy ; Esophageal cancer ; Reconstruction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In einer prospektiven Studie wurde die einzeitige Speiseröhrenrekonstruktion mit der 4872 h nach Oesophagektomie durchgeführten verglichen. In beiden Gruppen (26/24 Patienten) wurde eine transthorakale en-bloc Oesophagektomie durchgeführt. Als weitere Vergleichsgruppe wurden 45 Patienten mit transmediastinaler Oesophagektomie and einzeitiger Rekonstruktion, die ebenfalls während der Studiendauer operiert wurden, herangezogen. Es ergaben sich in Hinblick auf postoperative Komplikationen (26,9%; 29,1%; 22,2%) and auf die postoperative 30-Tage-Letalität (0%; 4,1%; 2,1%) sowie die Kliniksletalität (3,2%; 4,1%; 4,2%) keinerlei Unterschiede. Somit führt die Rekonstruktion mit aufgeschobener Dringlichkeit zu keiner weiteren Risikoverminderung; andererseits stellt sie aber auch keine Risikoerhöhung dar, so daß sie in das Verfahrensspektrum der Oesophaguschirurgie aufgenommen werden kann.[/p]
    Notes: Summary In a prospective study direct reconstruction of the esophagus was compared to reconstruction 48–72 h after esophagectomy. In both groups (26/24) transthoracic en-bloc esophagectomy was performed. During the same time period of the study another group of 45 patients had transmediastinal esophagectomy and direct reconstruction and this group was also used as comparison. There were no differences concerning postoperative complications (26.9%; 29.1 %; 22.2%), postoperative 30-days mortality (0%; 4.1%; 2.1%), and hospital mortality (3.2%; 4.1%; 4.2%). Thus reconstruction with delayed urgency does not lead to a further decrease of risk; on the other hand there is also no increase of risk and therefore it can be included in the spectrum of procedures of esophageal surgery.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 81 (1990), S. 381-384 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We observed non-classical contributions to the conductivity in three-dimensional samples at temperatures up to 35 K. The experiments were carried out inn-type Hg0.8Cd0.2Te samples having dimensions as large as 8 ×28×25 μm3. The two resistivity contributions, i.e. the ‘normal’ metallic behaviourρ 0 and a partΔρ provided by electron interference, are separated using a method disturbing the additional contribution by heating the electrons in electrical fields. The observed temperature and electric field dependence are compared with existing theories.
    Type of Medium: Electronic Resource
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