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  • 1
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Eighty patients undergoing major abdominal surgery using remifentanil-based anaesthesia were randomly allocated in a double-blind manner to receive an intravenous bolus of fentanyl, buprenorphine, morphine or piritramide 20 min before the end of surgery. A reduced dose was administered postoperatively when patients reported moderate pain. Subsequent analgesia was provided by patient-controlled analgesia (PCA). The mean time from the end of anaesthesia to spontaneous respiration was 9 ± 5 min. At first pain assessment, 63% of patients reported no or mild pain; 80% of patients required the second opioid bolus, those receiving piritramide needed the bolus significantly later than patients receiving buprenorphine or fentanyl. First PCA requirement also occurred significantly later in the piritramide group. This technique provided effective postoperative pain relief and transition to routine PCA and did not compromise recovery.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 122 (1968), S. 577-590 
    ISSN: 0375-9474
    Keywords: Radioactivity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section A 130 (1969), S. 545-562 
    ISSN: 0375-9474
    Keywords: Radioactivity
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 254 (1972), S. 339-344 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Perturbed γ-ray angular distributions from the first 2+ states were measured for Coulomb-excited192,194,196,198Pt recoiling into vacuum atv/c=0.010. Comparableg-factors were obtained for all four nuclei. Normalisation to the hyperfine field in196Pt enabled both a comparison with a recent hydrodynamicg-factor measured in192Pt and a cross-check of disputed Ir in Fe measurements. The followingg-factor was obtained:g(316 keV, 2+;192Pt)=0.32(3).
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 265 (1973), S. 197-206 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The static electric quadrupole interaction of111Cd in the heavy rare metals Gd, Tb, Ho and Er has been studied at room temperature by time differential perturbed angular correlation techniques. From these measurements the effective electric field-gradient,V zz eff , at the Cd-site was derived on a relative scale. The lattice contributions,V zz lat , to the total electric fieldgradient have been determined by lattice-sum calculations. The ratioα=V zz eff /V zz lat , which to a certain extent represents the conduction electron contribution to the electric fieldgradient, decreases with increasing atomic number. Possible reasons for this behaviour are discussed.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 269 (1974), S. 279-284 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The time differential perturbed angular correlation technique has been used to measure the electric fieldgradient (EFG) at the site of181Ta impurities in the heavy Rare Earth metals Gd, Tb, Dy, Ho and Er at room temperature. It is found that the ratio α ≡ ¦V zz eff /V zz lat ¦ between the measured EFGV zz eff and the lattice EFGV zz lat , which is known from lattice sum calculations, is in the order of α≃300, suggesting that an important contribution to the EFG is due to electrons localized at the impurity. The ratio α is not constant throughout the Rare Earth series. It decreases from Gd to Tb and increases between Tb and Er. This behaviour is compared to the results of a previous investigation with the impurity Cd in the same hosts.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 228 (1969), S. 391-395 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract TheK-shell particle parameter of the 122 keV transition in152Sm has been investigated using different sources and different experimental arrangements. From our measurements we obtain the mean valueb 2=1.77±0.03. This result deviates from the theoretical value by (6.5±1.5)%. We do not observe hygroscopic effects as reported in Ref.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neural transmission 67 (1986), S. 139-145 
    ISSN: 1435-1463
    Keywords: Djungarian Hamster ; pineal gland ; photoperiod ; dense-core vesicles ; synaptic ribbons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The ultrastructure of the superficial part of the pineal gland ofPbodopus sungorus was examined. Dense-core vesicles and synaptic ribbons in pinealocytes of animals kept under different photoperiods were counted, revealing marked differences. Pinealocytes of short-day animals compared with long-day animals exhibit an increase of dense-core vesicles coincident with a decrease of synaptic ribbons. It is assumed that the corresponding numerical changes of these organelles are of functional significance in relation to pineal secretory activity.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Propofol ; Target-controlled infusion (TCI) ; Präzision ; Bias ; Disoprifusor-TCI® ; Key words Propofol ; Target-controlled infusion (TCI) ; Precision ; Bias ; Disoprifusor-TCI®
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract In Germany a TCI-system for propofol (Disoprifusor-TCI®) has been commercially available since spring 1997. We investigated the prediction error and precision of this TCI system as part of a multicentre study. Bias, precision, blood concentrations and dosage of propofol were compared with patients receiving propofol via a manually controlled infusion device. Methods: After approval by the local Ethics Committee and written informed consent, 21 patients of ASA-classification I to III scheduled for major abdominal surgery received either a target controlled infusion (group T, Disoprifusor-TCI®) or a manually controlled infusion (group M) of propofol. The propofol plasma concentrations were measured by HPLC. The prediction error for each measurement, the median prediction error (MDPE) or bias, the median absolute prediction error (MDAPE) or precision and the divergence (change of the prediction error over infusion time) were calculated for both groups. Results: For all patients in group T (n = 12) the bias of the TCI system was 6.7% and the precision 27.5%. For 70% of all measured plasma concentrations the absolute prediction error was ≤ 37%. The divergence was −5.4% per hour. For all patients in group M (n = 9) the bias was 44.2% and the precision 50%. The mean amount of propofol infused per kilogramm body weight and hour was signifikant higher in T (9.0 ± 1.2 mg/kg/h) than in M (6.6 ± 1.2 mg/kg/h, p 〈 0.005). Conclusions: With a precision of 27.5% the investigated TCI system (Diprifusor-TCI®) showed an acceptable inaccuracy, as for TCI-systems a median prediction error of ± 30% has to be expected due to the inherent variability of pharmacokinetic parameters. Further studies will be necessary to find out whether the investigated TCI system for propofol may offer substantial advantages.
    Notes: Zusammenfassung Seit April 1997 ist in Deutschland ein TCI-System für Propofol (Disoprifusor-TCI®) kommerziell erhältlich. Wir haben Prädiktivität und Präzision dieses Systems untersucht und mit dem Bias, der Präzision, dem Propofolverbrauch und dem Blutspiegelverlauf einer manuell gesteuerten Infusion verglichen. Methode: 21 Patienten erhielten randomisiert eine intravenöse Anästhesie mit Propofol entweder als manuell gesteuerte Infusion oder als TCI. Blutplasmaspiegel wurden mittels HPLC bestimmt. Ergebnisse: Für das untersuchte TCI-System ergab sich eine Präzision von 27,5% und ein Bias von 6,7%. In der manuellen Gruppe betrug der Bias 44,2% und die Präzision 50%. Die durchschnittlich infundierte Propofolmenge (9,0 ± 1,2 vs. 6,6 ± 1,2 mg/kg/h, p 〈 0,005) und die mittlere Propofolplasmakonzentration (3,7 ± 0,5 vs. 3,0 ± 0,5 µg/ml, p 〈 0,05) waren in der TCI-Gruppe signifikant höher. Schlußfolgerung: Die in dieser Studie ermittelte Präzision und der Bias des untersuchten TCI-Systems ist nur unwesentlich größer als die Variabilität der pharmakokinetischen Parameter selbst, und kann somit als akzeptabel angesehen werden.
    Type of Medium: Electronic Resource
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