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  • Artikel: DFG Deutsche Nationallizenzen  (268)
  • 1
    Digitale Medien
    Digitale Medien
    Dilute solution properties of polyurethane (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 597-599 
    Details
    ISSN: 0323-7648
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Beschreibung / Inhaltsverzeichnis: Mittels Kleinwinkel-Laserlichtsreuung und viskosimetrichen Messungen wurden verdünnte Lösungen von Polyurethanfraktionen untersucht. Das Polymer wurde aus Butandiol und Hexamethylendiisocyanat hergestellt. Die Grenzviskositäten wurden über die MARK-HOUWINK-SAKURADA-Gleichung zu den Molekülmassen korreliert. Die Werte der Konstanten Km und a wurden ermittelt. Trotz des niedrigen Brechungsinkrementes von Polyurethan in Benzen konnten Molekülmassen bis herab zu 4300 gemessen werden.
    Notizen: Low angle laser light scattering and viscosity studies were made on dilute solution of fractions of polyurethane prepared from butandiol and hexamethylene diisocyanate. The intrinsic viscosities were correlated to molecular weights by the MARK-HOUWINK-SAKURADA equation. The values of the constants Km and a have been determined. In spite of the low refractive index increment of polyurethane in benzene, molecular weights as low as 4300 could be measured.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/actp.1991.010421114
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  • 2
    Digitale Medien
    Digitale Medien
    Intermolecular allene-nitrone cycloadditions (1979)
    s.l. : American Chemical Society
    The @journal of organic chemistry 44 (1979), S. 4213-4215 
    Details
    ISSN: 1520-6904
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jo01337a050
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  • 3
    Digitale Medien
    Digitale Medien
    Activation analysis of dislocation nucleation from crack tip in α-Fe (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 2088-2096 
    Details
    ISSN: 1089-7550
    Quelle: AIP Digital Archive
    Thema: Physik
    Notizen: Guided by a recent molecular dynamics simulation study of mode I crack-tip environment in α-Fe using an embedded atom method potential, an activation analysis of the nucleation of a half-square dislocation loop from the tip of a tensile crack has been carried out based on the Rice and Thomson approach [Philos. Mag. 29, 78 (1974)]. The effects of elastic softening due to stress and temperature as well as the nonlinear stress distribution around the crack are introduced by incorporating the simulation results self-consistently into the analysis, reducing the previously overestimated activation barrier by a factor of over 15.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.348735
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  • 4
    Digitale Medien
    Digitale Medien
    Mixed Mullerian tumors of the uterine corpus: a review (1993)
    238 Main Street, Cambridge, Massachusetts 02142, USA : Blackwell Scientific Publications
    International journal of gynecological cancer 3 (1993), S. 0 
    Details
    ISSN: 1525-1438
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: The literature relating to mixed Mullerian tumors of the uterine corpus has been reviewed. A critical account of the clinico-pathologic features of these tumors, their prognosis and treatment is presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1525-1438.1993.03010001.x
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  • 5
    Digitale Medien
    Digitale Medien
    Detection and measurement of DNA adducts in the cervix of smokers and non-smokers (1994)
    238 Main Street, Cambridge, Massachusetts 02142, USA : Blackwell Scientific Publications
    International journal of gynecological cancer 4 (1994), S. 0 
    Details
    ISSN: 1525-1438
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Smoking has been associated, on epidemiologic grounds, with an increased risk of cervical neoplasia. We have investigated this association, using laboratory-based methods. A 32P post-labeling assay was performed on 97 cervical biopsies to detect and measure DNA adducts (additional products formed by the covalent binding of potential chemical carcinogens to nuclear DNA). The specimens were taken from both normal cervices as well as the histologically normal regions of cervices with invasive and intraepithelial neoplasia. A detailed smoking history was obtained from each patient and correlated with an assay of cotinine level in urine. Characteristic smoking-related DNA adducts were found, and a significant difference in their levels was detected between current and non-current smokers (P = 0.017, Mann-Whitney test). There was also a highly significant trend in median adduct levels between the three tissue types (P 〈 0.002). We conclude that the finding of smoking-related cervical DNA damage is suggestive of a causal association between smoking and cervical neoplasia.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1046/j.1525-1438.1994.04030188.x
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  • 6
    Digitale Medien
    Digitale Medien
    Flow cytometric studies of ploidy and proliferative indices in the Yorkshire trial of adjuvant progestogen treatment of endometrial cancer (1993)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 100 (1993), S. 0 
    Details
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Objective To estimate whether flow cytometric indices provide independent measures of prognosis or predict response to prophylactic progestogens in endometrial cancer.Design Endometrial tumour specimens were retrieved and analysed by flow cytometry from 257 women who had been randomly allocated in a previous trial to receive prophylactic progestogen in addition to conventional therapy for endometrial carcinoma.Setting Fourteen district and two teaching hospitals in West Yorkshire.Subjects Women developing primary endometrial cancer between 1975 and 1983.Main outcome measures Tumour ploidy status and proliferative indices and the relation of these to tumour stage and grade, to prognosis and to response to progestogens.Results Ploidy status and proliferative indices were related to tumour stage, grade and patient survival but were not independent predictors of survival. They did not predict patients who would respond to progestogens although there was a nonsignificant trend towards patients with diploid tumours surviving longer after progestogen treatment.Conclusions Flow cytometry adds little to established prognostic indicators for endometrial cancer.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-0528.1993.tb15239.x
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  • 7
    Digitale Medien
    Digitale Medien
    Results of CO2 laser cylinder vaporization of cervical intraepithelial disease in 1234 patients. An analysis of failures (1986)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 93 (1986), S. 0 
    Details
    ISSN: 1471-0528
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Summary. This report analyses 1234 patients with CIN and noncondylomatous wart virus infection (NCWVI) managed by CO2 laser ablation in the Regional Department of Gynaecological Oncology, Queen Elizabeth Hospital, Gateshead from 1979 to 1983. Thirty-five patients (3%) were lost to follow-up. Of the 1157 patients currently under review and with at least 1 year of follow-up, 44 (3·8%) were laser treatment failures. This group is analysed and the results compared with other series.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-0528.1986.tb07817.x
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  • 8
    Digitale Medien
    Digitale Medien
    The stimulant cathartic, emodin, contracts the rat isolated ileum by triggering release of endogenous acetylcholine (2004)
    Oxford, UK : Blackwell Science Ltd
    Autonomic & autacoid pharmacology 24 (2004), S. 0 
    Details
    ISSN: 1474-8673
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Chemie und Pharmazie , Medizin
    Notizen: 1 Anthraquinone stimulant cathartics, such as emodin, are believed to increase the rate of contraction of ileum tissue in vitro via multiple mechanisms. The aim of this study was to probe the effects of emodin on acetylcholine (ACh)-induced contraction of the rat isolated ileum preparation. 2 Ileal sections were incubated in Tyrode's solution and responses to methacholine, ACh and emodin obtained in the absence and presence of the muscarinic antagonist atropine and the choline uptake inhibitor hemicholinium (HC-3). Depletion of endogenous ACh in the presence of HC-3 was achieved by construction of an ACh dose–response curve, using exogenous ACh, prior to re-testing the effects of emodin in the presence of HC-3. 3 Emodin caused dose-dependent tissue contraction that was abolished by inclusion of atropine (1 μm) in the buffer. Atropine (1 μm) antagonized the response caused by methacholine. 4 Incubation of tissues with HC-3 (1 and 10 μm) reduced the maximum response caused by emodin by 45% and 71% respectively, but had no effect on ACh-induced tissue contraction. 5 These data suggest that, emodin causes contraction of the ileum by triggering the release of endogenous ACh which acts on muscarinic receptors to cause contraction of the rat isolated ileum preparation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1474-8673.2004.00321.x
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  • 9
    Digitale Medien
    Digitale Medien
    Selective extraction using functionalized poly(organosiloxanes) (1990)
    s.l. : American Chemical Society
    Biotechnology progress 6 (1990), S. 93-97 
    Details
    ISSN: 1520-6033
    Quelle: ACS Legacy Archives
    Thema: Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/bp00002a001
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  • 10
    Digitale Medien
    Digitale Medien
    EFFECT OF INANITION DURING THE NEONATAL PERIOD ON DISCRIMINATION LEARNING AND BRAIN BIOCHEMISTRY IN THE ALBINO RAT (1967)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 14 (1967), S. 0 
    Details
    ISSN: 1471-4159
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1471-4159.1967.tb09490.x
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