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  • Chemistry  (14)
  • Engineering General  (4)
  • Antiaggregating drugs  (2)
  • Computed tomography  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 755-756 
    ISSN: 1435-2451
    Keywords: Thymoma ; Thymushyperplasia ; Computed tomography ; Thymom ; Thymushyperplasie ; Computertomographie.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In der Diagnostik mediastinaler Tumoren spielt die thorakale Computertomographie mit der Differenzierungsmöglichkeit zwischen retrostemalem Fett, Thymusgewebe und Thymom eine zentrale Rolle. Wegen der Übersichtlichkeit und Radikalität bei der Entfernung eines Thymoms aber auch der zu fordernden ausgedehnten Thymektomie im Falle der Thymushyperplasie ist die mediane Sternotomie operativer Zugangsweg der Wahl. Für die Prognose ist der intraoperative Nachweis von invasivem Wachstum von entscheidender Bedeutung.
    Notes: Summary Computed axial tomography plays an essential role in the diagnosis of mediastinal tumors. It can differentiate between retrosternal fat, thymic tissue and thymoma. A median stemotomy is the operative approach of choice. It provides optimal access to the mediastinum which is a prerequisite in the radical removal of a thymoma as well as in the surgical treatment of thymus hyperplasia which we believe has to be treated by radical thymectomy. The prognosis mainly depends on whether invasion of adjacent structures was present at the time of operation or not.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of antiaggregating agents - acetylsalicyclic acid (ASA) and dipyridamol - on the rejection of allotransplanted canine kidneys in presensitized animals were studied. Blood flow dropped more markedly in the control group than in the group treated with ASA and dipyridamol. 24 hours after transplantation the blood flow in this group was significantly higher than in the control group (p 2,5 %) and in the third group treated with dipyridamol alone. The cellular rejection started earlier and was more pronounced in the control group. Only in this group vascular rejection and microthrombi were demonstrated. Urine output ceased 24 to 60 hours after transplantation. The immunosuppressive, antiphlogistic and platelet antiaggregating effect of the combined ASA and dipyridamol therapy is thought to be responsible for the better results in this group. In this experimental model the combined treatment of ASA and dipyridamol results in a later onset of cellular rejection, in better blood-flow of the kidney and later onset of anuria.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1433-8580
    Keywords: Renal transplantation ; Graft rejection ; Platelet thrombi ; Antiaggregating drugs ; Nierentransplantation ; Transplantatabstoßung ; Thrombocytenthromben ; Thrombocytenaggregationshemmende Pharmaka
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Thrombocytenaggregationshemmende Pharmaka — Acetylsalicylsäure und 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-Sulfattrihydrat—werden in ihrer Wirkung auf Abstoßungsreaktionen bei allotransplantierten Nieren an Hunden untersucht. Klinisch findet sich keine Wirksamkeit der Medikamente, dagegen zeigen interessanterweise die histologischen Befunde bei der Acetylsalicylsäuregruppe eine verminderte Abstoßungsreaktion.
    Notes: Summary The effects of anti-thrombotic drugs—Acetyl-salicylic-acid and 2-Piperazinyl-4-thiomorpholino-pyrido(3,2-d)-pyrimidin-sulfat-trihydrat—on rejection reactions of renal allografts in dogs have been studied. From the clinical point of view no effectiveness of the two drugs can be found, whereas the histological findings do clearly show diminished rejection reactions in the Acetylsalicylic-acid group.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Communications in Numerical Methods in Engineering 11 (1995), S. 149-158 
    ISSN: 1069-8299
    Keywords: FEM ; stability analysis ; algorithms ; shell structures ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The investigation of the non-linear response of shell-like structures requires insight into stability behaviour. In the paper we compare two strategies to compute singular points based on different eigenvalue problems. We show a simple algorithm to calculate critical load factors A used in engineering buckling analysis from the eigenvalues of the standard eigenvalue problem (KT - ω1) ϕ = 0. Some numerical examples illustrate the derived results and algorithms.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 361 (1983), S. 913-913 
    ISSN: 1435-2451
    Keywords: Myastenia gravis ; Thymectomy ; Computed tomography ; Myasthenia gravis ; Thymektomie ; Computertomographie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei Patienten mit Myastenia gravis wird die Häufigkeit einer Thymushyperplasie mit 65%, von Thymustumoren mit 8–28% angegeben. Da sich selbst ein eindeutig veränderter Thymus dem klinischen Nachweis entziehen kann, hat die thorakale Computertomographie einen hohen diagnostischen Stellenwert. Die Indikation zur Thymektomie besteht bei erwachsenen Myastheniepatienten im computertomographischen Nachweis von Thymusgewebe. Für die zu fordernde komplette Entfernung des Thymusgewebes bevorzugen wir die mediane Sternotomie. Neurologische Nachbehandlung ist notwendig.
    Notes: Summary Among patients suffering from myasthenia gravis, thymic hyperplasia can be found in 65% and a tumor in 8%–28%. Clinical diagnosis can be difficult. Therefore, computed axial tomography is of great diagnostic importance. There is increasing evidence that a thymectomy should always be performed if thymic tissue can be shown by CAT scan to be present in the anterior mediastinum. As operative treatment we prefer a median sternotomy, which makes it easier to remove the thymus completely. Postoperatively the patients should be under neurological surveillance.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chalcogenide Glasses with Organic Components. V. The Reactivity in the Glass-forming Systems Selenium, Arsenic, Bromine, 4,4′-Bis(selenenylbromido)azobenzene and Selenium, Arsenic, Iodine, 4,4′-Bis(diiodarsa)biphenyleneSe—As—Br glasses and 4,4′-bis(selenenylbromido)azobenzene react in the solid state. In this case arsenic is an acceptor for bromine, and azobenzene groups will be linked via poly-selenide groups with the glass matrix. The reaction is proved by DTA. At elevated temperatures, the selenium-carbon bond will be replaced by a carbon-bromine link yielding 4,4′-dibromazobenzene. Solid 4,4′-bis(diiodarsa)biphenylene shows a similar reaction with Se—As—I above TG. The pyrolysis takes place at higher temperatures.
    Notes: Gläser des Systems Se—As—Br reagieren im festen Zustand mit 4,4′-Bis-(selenenylbromido)azobenzol. Dabei wirkt Arsen als Bromakzeptor, und die Azobenzolgruppen werden über Polyselenidgruppen mit der Glasmatrix verknüpft. Die Reaktion wurde differentialthermoanalytisch verfolgt. Bei höheren Temperaturen werden die Selen-Kohlenstoff-Bindungen durch Brom-Kohlenstoff-Bindungen ersetzt. 4,4′-Dibromazobenzol kann durch Sublimation isoliert werden. Festes 4,4′-Bis(dijodarsa)biphenyl reagiert in analoger Weise mit unterkühlten Selen-Arsen-Jod-Schmelzen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 29 (1990), S. 1455-1471 
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The axisymmetric behaviour of geometrically non-linear elastic shells of revolution with finite rotations is discussed. In contrast to the approach of Reissner and to standard classical shell theories a new straightforward strategy is derived for the formulation of fully non-linear strain measures in the axisymmetric case. Within this approach the computation of the deformed director vector d is a main assumption which is essential to describe the fully non-linear bending behaviour. A Total Lagrangian Description is chosen to represent the large displacements. As an illustrative example the finite element formulation for a simple two-node conical element is given. A consistent linearization of the weak form leads to a quadratically convergence behaviour. The discussed shell examples under proportional loading show the good performance of the derived finite element formulation.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 65 (1993), S. 1116-1117 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 70 (1998), S. 1198-1199 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 68 (1996), S. 1100-1101 
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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