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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 162-164 (1989), S. 699-700 
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    The @Journal of Supercritical Fluids 5 (1992), S. 180-185 
    ISSN: 0896-8446
    Keywords: cavitation ; high pressure pumps ; supercritical fluids
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 20 (1997), S. 0 
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— It is shown that autofrettage at low temperatures is superior to autofrettage at room temperature in enhancing the fatigue resistance of thick-walled tubes against pulsating internal pressure. The physical reason is based on the well-known temperature dependence of the mechanical behaviour of metals and alloys which generally exhibit an enhancement of both the yield stress and strain hardening behaviour at lower temperatures. As a consequence, significantly larger compressive residual hoop stresses can be introduced during pressurization at low temperatures than at room temperature. Experimental data obtained on thick-walled tubes of the metastable austenitic stainless steel AISI 304 L which were subjected to pulsating internal pressure at room temperature after autofrettage at temperatures between-110°C and room temperature are presented. These data demonstrate convincingly the advantages offered by low-temperature autofrettage in enhancing both the fatigue life in the finite-life region and the fatigue endurance limit in comparison with autofrettage at room temperature. In conclusion, some specific materials requirements for optimum low-temperature autofrettage performance are discussed.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-2013
    Keywords: Amino acid transport ; Renal tubule ; Stereospecificity ; Passive diffusion ; Saturation kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Renal tubular reabsorption of glycine and of thel- andd-isomers of histidine, serine, phenylalamine, methionine, proline and cystine was investigated in vivo et situ by continuous microperfusion of single proximal convolutions of the rat kidney. In the case of glycine and thel-isomers, tubular reabsorption is saturable to a great extent. Thed-amino acids are reabsorbed much more slowly than the respectivel-forms. Furthermore in the case of methionine and perhaps also of proline, serine and phenylalanine, the fractional reabsorption decreases in the presence of high concentrations of thel-form. This indicates that thed-isomers also have a measurable affinity for the reabsorption mechanisms of the renal tubule. The very poor reabsorption ofd-amino acids in the presence of theirl-isomers indicates that simple passive diffusion plays only a relatively small role in tubular amino acid reabsorption. Permeability coefficients estimated from these findings are in the range from 1–5×10−7 cm2·s−1. These values are very similar to those found for other organic molecules of comparable molecular weights.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1433-0385
    Keywords: Key words: Colorectal liver metastases ; Non-colorectal liver metastases ; Intra-arterial chemotherapy ; Portal chemotherapy ; Regional chemotherapy in combination with temporary occlusion. ; Schlüsselwörter: Colorectale Lebermetastasen ; nicht colorectale Lebermetastasen ; intraarterielle Chemotherapie ; portale Chemotherapie ; intraperitoneale Chemotherapie ; regionale Chemotherapie in Kombination mit passagerer Occlusion.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung. Eine Metastasierung kann bei zahlreichen Tumoren zunächst auf die Leber beschränkt sein. Bei nichtresektablen Befunden wurden zahlreiche regionale Therapiemodalitäten insbesondere die intraarterielle (i.a.) Chemotherapie vorteilhafter als eine systemische Behandlung angesehen, während nur in Ausnahmen eine portale oder intraperitoneale Therapie erfolgreich war. Nach Weiterentwicklung der arteriellen Langzeittherapie mit Fluorodeoxyuridine (FUdR) und dem Einsatz implantierbarer Pumpen oder Portsysteme konnte bei Lebermetastasen colorectaler Tumoren eine hohe Ansprechrate erreicht werden. Eine Verlängerung der Überlebenszeit konnte aber nur im Vergleich mit einer lediglich symptomatisch behandelten Kontrollgruppe bewiesen werden. Aufgrund einer hohen lokalen Toxizität der i. a. FUdR-Therapie über 14 Tage, wie chemischer Hepatitis und biliärer Sklerose, wurde in Europa eine effektive i. a. folinsäuremodulierte 5-Fluorouracil-Therapie entwickelt. Der randomisierte Vergleich zeigte eine Überlegenheit dieser i. a. 5-FU-Therapie vs. i. a. FUdR. Gegenüber einer systemischen 5-FU/FS-Therapie profitierten jedoch nur Patienten mit einem Tumorvolumen 〈 25 % in der Subgruppenanalyse. Die Wertigkeit der arteriellen Behandlung bleibt trotz hoher Ansprechraten fraglich. Über eine arterielle Behandlung von Mamma-, Magen- oder Carcinoidlebermetastasen liegen nur wenige Berichte vor. Somit stellt die i. a. Therapie als primäre Option außerhalb von Studien kein Standardverfahren dar. Die zahlreichen Erfahrungen und neue Substanzen ermöglichen aber die Konzeption attraktiver regionaler Studien.
    Notes: Summary. In numerous tumors, metastasis can be limited to the liver. In non-resectable patients, regional treatment modalities, especially arterial cytostatic infusion, are favored in contrast to systemic chemotherapy, whereas intraportal or intraperitoneal application is not successful. Improved results with high response rates have been reported after development of intra-arterial (i.a.) long-term regimens with FUdR in patients with colorectal liver metastases using implantable pumps and ports. However, a survival benefit could only be demonstrated in comparison with a control group only treated symptomatically. Because of several reports on major local toxicity of i. a. FUdR treatment (i.e. chemical hepatitis and biliary sclerosis) several other effective i. a. 5-FU regimens have been developed. A randomized study has demonstrated superiority of i. a. 5-FU versus i. a. FUdR. In comparison with systemic treatment, superiority has only been demonstrated in patients with an intrahepatic tumor burden of 〈 25 %. Publications about regional treatment of patients with breast, gastric cancer or carcinoid liver metastases are rare. Despite the high response rates reported, the benefit of arterial chemotherapy remains questionable. Overall, local long-term chemotherapy cannot be recommended outside of studies as a primary treatment. However, extensive experience and new drugs support the idea of conducting further regional studies.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 75 (1989), S. 1-9 
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Cu 3d and O 2p electronic states of Cu2O, CuO, and the highT c compound YBa2Cu3O7−δ have been probed by means of high resolution x-ray emission spectroscopy (XES). The CuLα and OKα XES bands are compared in detail with recently reported x-ray photoelectron and ultraviolet photoelectron spectroscopy (XPS and UPS) measurements and densities of states obtained by local density functional (LDF) theory. The XES data show that the hybridization between Cu 3d and O 2p states is completely modified in CuO and YBa2Cu3O7−δ, whered-d correlation energy is large, as compared to LDF predictions. Such is not the case for Cu2O where agreement between theory and experiment is good. The Cu 3d states are found to be highly localized in YBa2Cu3O7−δ (though less so than in CuO). The O 2p states lie at lower binding energies than in the simpler oxides and are mainly situated above the Cu 3d states. The respective positions of the centre of gravity of the OK α emission bands on an x-ray energy scale indicate that the oxygen sites are less well screened by the O 2p states in the highT c compound. This provides indirect evidence for the presence ofd-like states at the oxygen sites.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 213 (1961), S. 421-425 
    ISSN: 1432-069X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 338 (1990), S. 133-137 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The elemental composition of medieval mortars from the derelict village Holzheim and from Fritzlar was determined using energy-dispersive X-ray fluorescence analysis with radionuclide excitation. By comparison with sands and limes from different sites in Chattia/FRG the origin of the raw materials could be ascertained.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 65 (1993), S. 1088-1090 
    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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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 67 (1995), S. 1184-1185 
    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
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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