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  • 1995-1999  (9)
  • 1990-1994  (12)
  • 1970-1974  (7)
  • 1
    Digitale Medien
    Digitale Medien
    Effect on plasma lipids and lipoproteins of postmenopausal oestrogen therapy with added dydrogesterone (1990)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 97 (1990), S. 0 
    Details
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. In a prospective, randomized, cross-over study, 14 postmenopausal women completed 9 months of treatment with conjugated equine oestrogens, 1.25 mg daily. Seven women added dydrogesterone 20 mg daily for 12 days during months 2, 3 and 4, and then 10 mg daily for an identical time in months 5,6 and 7. The other seven women added the two dydrogesterone doses in reverse sequence. No dydrogesterone was taken during months 8 and 9. Lipids and lipoproteins were measured before treatment and at the end of months 4, 7 and 9. Lipids were also estimated in an untreated (reference) group of eight postmenopausal women on two occasions 6 months apart; these showed significant changes in HDL2- and HDL3-cholesterol. In the treatment group, HDL-cholesterol and apolipoprotein (apo) Al were significantly higher and LDL-cholesterol and apo B were significantly lower at months 4, 7 and 9 compared with baseline values. Triglyceride levels were increased significantly over baseline values, but remained within the normal range. No significant differences between the two dydrogesterone doses were observed on any lipid and lipoprotein fraction, nor were there any differences between the oestrogen-only and oestrogen/dydrogesterone treatment phases. Dydrogesterone appears to cause little, if any, lipid and lipoprotein changes and assessment in a larger population of postmenopausal women is warranted.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-0528.1990.tb02496.x
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  • 2
    Digitale Medien
    Digitale Medien
    Noncontacting microwave coupling to a cryogenic gravitational radiation antenna (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 1905-1909 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Gravitational radiation detectors must detect extremely small displacements, and thus require elaborate vibration isolation systems to attenuate the surrounding environmental noise. Contacting electrical leads can provide a direct path that will short circuit the vibration isolation, and degrade the antenna Q factor. Noncontacting microstrip transceivers provide a practical means of electromagnetically coupling to a resonant bar gravitational antenna when a microwave transducer is used as a signal readout system. Two microwave patch antennas now operate as transceivers on the University of Western Australia's 1.5 tonne niobium bar gravitational radiation antenna and are described in detail in this paper. This system allows improved vibration isolation without degradation of the acoustic Q factor of the niobium bar. Combined with a cryogenic amplifier, this system should achieve a reduction of 57 dB in the series noise power. This corresponds to a factor of 700 reduction in the effective displacement noise when referred to the transducer, from 2×10−16 to 3×10−19 m/(square root of)Hz.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1143975
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  • 3
    Digitale Medien
    Digitale Medien
    Microwave signal processing for a cryogenic gravitational radiation antenna with a noncontacting readout (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 3191-3197 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A modified version of the microwave signal processing system for the 1.5 tonne niobium bar gravitational radiation antenna at the University of Western Australia has been developed and tested during preparations for long-term observation. Among the new features of the system are a noncontacting microwave coupling to the motion transducer, cryogenic low-noise amplification, and automatic carrier suppression with improved long-term stability.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1144327
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  • 4
    Digitale Medien
    Digitale Medien
    Electrophilic Bromination of 7-Norbornylidene-7'-Norbornane. The Observation of an Unusually Large Inverse Deuterium Kinetic Isotope Effect (1995)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 117 (1995), S. 8769-8776 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja00139a009
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  • 5
    Digitale Medien
    Digitale Medien
    Nuclear magnetic resonance study of acid-base interactions for the chloranil electrode system in acetonitrile (1972)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 76 (1972), S. 246-248 
    Details
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Physik
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/j100646a018
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  • 6
    Digitale Medien
    Digitale Medien
    On the mechanism of aluminum via fill by reflow and forcefill as studied by transmission electron microscopy (1999)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 85 (1999), S. 571-577 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: A comparison has been made between the Al via fill mechanisms in both reflow and forcefill processes. Cross-sectional transmission electron microscopy has been used to study the Al transport into the vias as a function of time. Our analysis shows that reflow and forcefill results can be explained by a stress relaxation model. We propose that the transport of aluminum into the vias as a function of time is described by both diffusion and dislocation movement. In the case of reflow at high temperature, the vias may be filled completely, after closure, by high-temperature creep of Al. In the case of forcefill, an additional high stress has been applied which raises the strain levels such to activate the dislocation glide and climb mechanism. The results from detailed investigations of the microstructure by cross-sectional transmission electron microscopy support these new insights. © 1999 American Institute of Physics.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.369491
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  • 7
    Digitale Medien
    Digitale Medien
    Predicted, actual and optimal precompetition anxiety in adolescent track and field athletes (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of medicine & science in sports 2 (1992), S. 0 
    Details
    ISSN: 1600-0838
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin , Sportwissenschaft
    Notizen: Anxiety was assessed in younger and older adolescent athletes in an attempt to test aspects of Hanin's zone of optimal function theory. Sixty-five participants in a track and field camp completed anxiety inventories at baseline and were instructed: 1) to recall how anxious they felt prior to their best performance and 2) to predict how anxious they would feel prior to an informal meet to be held 4 days later. Actual precompetition anxiety was assessed 1 h prior to the meet. Predicted precompetition anxiety was significantly higher than baseline and actual precompetition anxiety. Mean actual precompetition anxiety was not elevated above baseline. However, 34% (22/65) of the sample experienced high levels of precompetition anxiety, and the majority of these (17/22) reported performing optimally with high anxiety. Significant correlations between predicted and actual precompetition anxiety occurred for boys, but not for girls. The differences between predicted and actual precompetition values tended to be smaller in boys than in girls. Based on this sample, it is concluded that: 1) in accordance with the zone of optimal function theory, young athletes display considerable diversity in actual and optimal precompetition anxiety values; and 2) young athletes tend to overestimate the level of anxiety they will experience prior to an easy competition.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0838.1992.tb00336.x
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  • 8
    Digitale Medien
    Digitale Medien
    Treatment of timber products with gaseous borate esters (1995)
    Springer
    Wood science and technology 29 (1995), S. 385-395 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Summary Several factors which influence the treatment of timber products with vapour phase preservatives such as borate esters are considered. Gas flow rate through the substrate was found to be a significant factor limiting both preservative penetration and its rate of deposition. A theoretical model of the treatment process was developed and tested experimentally to determine the influence of several factors on the retention and distribution of boric acid. Gas flow into the timber product was influenced by permeability, pressure gradient and substrate moisture content. The implications of the findings are considered with regard to the treatment of wood and wood products with gaseous reagents.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00202586
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  • 9
    Digitale Medien
    Digitale Medien
    Treatment of timber products with gaseous borate esters (1998)
    Springer
    Wood science and technology 32 (1998), S. 25-31 
    Details
    ISSN: 1432-5225
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Maschinenbau
    Notizen: Abstract This paper forms a continuation of the work on treatment of timber products with gaseous borate esters. Turner and Murphy (1995) in an earlier paper indicated that gas flow rate into the wood substrate was the principle factor limiting the rate of boric acid retention and the depth of penetration into wood products. The current paper considers the impact of this factor on treatment efficacy and considers experimental work designed to evaluate qualitatively, the impact of proposed modifications to the process. Significant improvements in treatment performance were observed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00702557
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  • 10
    Digitale Medien
    Digitale Medien
    MRT-gesteuerte regionale Tiefenhyperthermie (1999)
    Springer
    Der Radiologe 39 (1999), S. 756-763 
    Details
    ISSN: 1432-2102
    Schlagwort(e): Schlüsselwörter MRT-Bildgebung ; Regionale Tiefenhyperthermie ; Weichteiltumoren ; Knochentumoren ; Key words MRI ; Regional hyperthermia ; Soft-tissue tumors ; Bone tumors
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Summary Purpose: Regional hyperthermia in combination with chemotherapy or/and radiotherapy is a promising treatment concept for locally advanced, deep-seated tumors. The purpose of the project is the optimization of the therapy using non-invasive, three-dimensional imaging of tissue changes or of the temperature distribution during regional hyperthermia. Methods: MRI offers methods suitable in principle for tissue characterization and MR thermometry. A new MRI-hyperthermia hybrid system has been developed based on an innovative hyperthermia applicator and an open MRI system. Results: After successful testing of the new MRI-hyperthermia hybrid system simultaneous MRI and regional hyperthermia in patients could be accomplished for the first time. At present the T1 relaxation time seems to be a promising parameter for MR thermometry. Conclusion: The first clinical application of the MRI-hyperthermia hybrid system can be regarded as an important step towards the development of regional hyperthermia. This new hybrid system and the MR thermometry methods have to be investigated prospectively in clinical studies.
    Notizen: Zusammenfassung Fragestellung: Die regionale Tiefenhyperthermie in Kombination mit Chemotherapie und/oder Radiotherapie ist ein vielversprechendes Behandlungskonzept für lokal fortgeschrittene, tiefliegende Tumoren. Ziel dieses Projektes ist die nichtinvasive, dreidimensionale Darstellung der Gewebsveränderungen und der Temperaturverteilungen während der regionalen Tiefenhyperthermie. Methodik: Die Magnetresonanztomographie bietet prinzipiell geeignete Methoden für die Gewebecharakterisierung und für die MR-Thermometrie. Auf der Basis eines innovativen Hyperthermieapplikators und eines offenen MR-Tomographen wurde ein neues MRT-Hyperthermie-Hybridsystem entwickelt und erprobt. Ergebnisse: Nach der erfolgreichen Erprobung des neuen MRT-Hyperthermie-Hybridsystems an Phantomen und Probanden konnte erstmals am Patienten eine simultane MR-Bildgebung und Tiefenhyperthermie durchgeführt werden. Die T1-Relaxationszeit erscheint nach unseren derzeitigen Forschungsergebnissen ein vielversprechender Ansatz für die MR-Thermometrie bei 0,2 T zu sein. Schlußfolgerung: Der erstmalige klinische Einsatz des MRT-Hyperthermie-Hybridsystems kann als wichtiger Meilenstein für die Gesamtentwicklung der regionalen Tiefenhyperthermie bezeichnet werden. Das neue Gerät und die unterschiedlichen MRT-Verfahren, insbesondere die der MR-Thermometrie, müssen nun in klinischen Studien untersucht werden.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001170050572
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