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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 318-321 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 100 (1978), S. 3973-3974 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 101 (1979), S. 6804-6810 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 107 (1985), S. 4786-4788 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 93 (1971), S. 2963-2968 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-055X
    Keywords: Schlüsselwörter Durchgangssyndrom ; Risikofaktoren ; Gefäßchirurgie ; Key words Postoperative delirium ; Risk factors ; Vascular surgery
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract Introduction: Postoperative delirium is a common psychic disturbance occurring acutely after various surgical procedures and typically presenting with a fluctuating course. These patients' recovery takes longer. In this study we analyze the incidence of postoperative delirium in patients undergoing vascular surgery and try to identify risk factors for its development. Methods: Patients undergoing elective arterial operations were included. Their medical history, the specific vascular diagnosis and operation performed, the medication and laboratory data were monitored. Additionally the patients were preoperatively interviewed by a psychiatrist. Intraoperatively the drugs, infusions, possible transfusions, blood gases and pressures were monitored, as were the times of surgery and anesthesia. Postoperatively patients were seen daily by the psychiatrist and the surgeon for at least 7 days. Postoperative delirium was diagnosed according to DSM IV criteria, and mild, moderate and severe delirium were distinguished. Results: Fifty-four patients entered the study. Twenty-one (38.9%) developed postoperative delirium (11 mild, 2 moderate, 8 severe). Patients with aortic operations developed delirium more frequently than those with non-aortic procedures(55.5 vs 22.2%, n=27 each). Some preexisting diseases (hearing disturbance) increased the probability of postoperative delirium, while age was not identified as a risk factor. General psychopathological and depressive disturbances increased the likelihood of postoperative delirium. Patients who had a severe intraoperative course developed postoperative delirium more frequently. This was not seen in the absolute time of surgery or anesthesia nor in the intraoperative development of blood pressure or intraarterial gases, which did not differ between patients with and without postoperative delirium. More reliable parameters were an increased intraoperative need for crystalloid volume, intra – or postoperatively decreased hemoglobin values (Hb 〈10 g/dl) and the development of acidosis that had to be treated. Patients with delirium had serious complications more often (8/21=38.1% vs 6/33=18.2%) and needed Intensive Care treatment longer (2.7 vs 2.1 days, only aortic surgery 3.2 vs 2.4 days). Conclusions: Postoperative delirium after vascular surgery is frequent. Patients undergoing aortic surgery, with specific concomittant medical disease, psychopathological disturbances and a severe intraoperative course, are at risk of developing postoperative delirium.
    Notes: Zusamenfassung Postoperative Durchgangssyndrome sind pyschische Störungen, die nach Operationen akut auftreten können und einen flukturierenden Verlauf haben. Der postoperative Verlauf ist oft deutlich protrahiert. Ziel dieser Untersuchung war es, zu analysieren, wie häufig Durchgangssyndrome bei gefäßchirurgischen Patienten auftreten, und ob sich Risikofaktoren für deren Entwicklung identifizieren lassen. Methoden: Die somatischen Befunde von Patienten, die elektiv arteriel operiert wurden, wurden erfaßt. Darüber hinaus wurden die Patienten präoperativ psychiatrisch untersucht. Intraoperativ wurden der Infusions- und Transfusionsbedarf, Blutgase und Blutdruckverhalten sowie Narkose- und Operationszeiten dokumentiert. Postoperativ wurden die Patienten täglich von Tag 1–7 psychiatrisch und chirurgisch untersucht. Ein Durchgangssyndrom wurde nach dem Diagnostischen und Statistischen Manual Psychischer Störungen DSM IV diagnostiziert und in leichte, mittlere und schwere Formen unterteilt. Ergebnisse: 54 Patienten gingen in die Studie ein. Davon entwickelten 21 (38,9%) ein Durchgangssyndrom (11 leicht, 2 mittelschwer, 8 schwer). Deutliche Unterschiede zeigten sich zwischen Patienten mit aortalen Operationen(n=27, 55,5% Durchgangssyndrom) und solchen mit nichtaortalen Eingriffen (n=27, 22,2% Durchgangssyndromen). Bestimmte Begleiterkrankungen (Hörstörung), nicht jedoch ein höheres Lebensalter erhöhten die Wahrscheinlichkeit eines postoperativen Durchgangssyndromes. Sowohl allgemein psychopathologisch auffällige Patienten als auch solche mit einer depressiveren Grundstimmung entwickelten häufiger Durchgangssyndrome als psychiatrisch unauffällige. Patienten, deren intraoperativer Verlauf kompliziert war, entwickelten häufiger ein Durchgangssyndrom. Dabei war die Schwere des Verlaufes nicht an der absoluten Operationszeit, dem Blutdruck oder den Blutgasen abzulesen. Aussagekräftiger waren ein intra- oder postoperativ erniedrigter Hämoglobinwert (Hb 〈10 g %), ein erhöhter intraoperativer Infusionsbedarf und eine intraoperative Acidose. Patienten mit Durchgangssyndromen entwicklten häufiger postoperative Komplikationen (8/21=38,1% vs 6/33=18,2%) und mußten länger intensivmedizinisch behandelt werden (2,7 vs 2, 1 Tage, nur aortale Eingriffe 3,2 vs 2,4 Tage). Schlußfolgerungen: Postoperative Durchgangssyndrome sind nach gefäßchirurgischen Operationen häufig. Vor allem Patienten mit aortalen Operationen, mit bestimmten Begleiterkrankungen, psychopathologischen Auffälligkeiten und solche mit einem komplizierten intraoperativen Verlauf sind gefährdet, eine derartige Komplikation zu entwickeln.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1858
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Technology
    Notes: Abstract  The present study is focused on the development of a gas sensor for application in a high temperature environment. The sensor has been realised using thin films prepared on silicon substrates including a high temperature stable heating and wiring system. TiO2 acts as sensitive layer. Measurements have been carried out in synthetic gas mixtures as well as in gases in a given application. Neural networks and multivariate data analysis have been used for determining the gas concentrations. The capability to detect CO, NO x , and toluene is shown.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Il nuovo cimento della Società Italiana di Fisica 11 (1989), S. 123-139 
    ISSN: 0392-6737
    Keywords: Heat capacities of liquids ; Functional analytic methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si presentano i risultati di una formulazione basata sugli integrali di cammino applicata alla termodinamica di un sistema a due stati accoppiato agli elettroni di conduzione. Si mostra che l'usuale approssimazione di un gas diluito di «bounce» è inadeguata nel caso di debole smorzamento e basse temperature e si presenta pertanto un'appropriata generalizzazione. Il modo di valutare esattamente la funzione di partizione di un sistema a due stati debolmente smorzato è quello di generalizzare un singolo «bounce» a una classe di insiemi irriducibili di «bounce» multipli con interazioni interne e di considerare questi insiemi come un gas diluito. Si ricavano le espressioni per la funzione di partizione e per il calore specifico. Si discute anche il caso di un sistema a due stati in presenza di moderata asimmetria.
    Abstract: Резюме Приводятся результаты применения метода интегрирования по траекториям к термодинамике системы с двумя состояниями, связанной с электронами проводимости. Показывается, что стандартное приближение разжиженного газа не является адекватным для слабого затухания и при низких температурах. Предлагается соотаетствующее обобщение. Для выписления функции распределения для слабо затухающей системы с двумя состояниями необходимо обобщение рассматриваемого приближения для класса неприводимых кластеров с внутренними взвимодействиями, в затем рассматривать эти кластеры, как разжиженный газ. Приводятся количественные выражения для функции распределения и для удельной теплоёмкости. Так же обсуждается случай смещения.
    Notes: Summary The results of a path integral approach to the thermodynamics of a two-state system coupled to conduction electrons are presented. It is shown that the standard dilute bounce gas approximation is inadequate for weak damping and low temperatures and the appropriate generalization is presented. The strategy to evaluate exactly the partition function of a weakly damped two-state system is to generalize a single bounce to a class of irreducible multibounce clusters with internal interactions and to consider these clusters as a dilute gas. Quantitative expressions for the partition function and for the specific heat are presented. The case of a bias is also discussed.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Archives of Biochemistry and Biophysics 69 (1957), S. 311-319 
    ISSN: 0003-9861
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Physics, Section B 44 (1972), S. 573-593 
    ISSN: 0550-3213
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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