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  • 1
    Electronic Resource
    Electronic Resource
    Dilute solution properties of polyurethane (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 597-599 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 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.
    Notes: 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.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010421114
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  • 2
    Electronic Resource
    Electronic Resource
    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
    Source: AIP Digital Archive
    Topics: Physics
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348735
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  • 3
    Electronic Resource
    Electronic Resource
    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
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1525-1438.1993.03010001.x
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  • 4
    Electronic Resource
    Electronic Resource
    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
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1525-1438.1994.04030188.x
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  • 5
    Electronic Resource
    Electronic Resource
    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
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1993.tb15239.x
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  • 6
    Electronic Resource
    Electronic Resource
    Selective extraction using functionalized poly(organosiloxanes) (1990)
    s.l. : American Chemical Society
    Biotechnology progress 6 (1990), S. 93-97 
    Details
    ISSN: 1520-6033
    Source: ACS Legacy Archives
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bp00002a001
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  • 7
    Electronic Resource
    Electronic Resource
    The International Headache Society (IHS) Headache Classification as applied to a headache clinic population (1994)
    USA/Oxford, UK : Blackwell Science Ltd
    Cephalalgia 14 (1994), S. 0 
    Details
    ISSN: 1468-2982
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Four hundred patients attending a headache clinic were classified using the IHS criteria. The majority required more than two, often three or four, diagnoses. Even though migraine was the most common diagnosis, only 1/4 of those with a migraine diagnosis had it as the only diagnosis. Seventy-five percent of migraine patients had coexistent chronic tension-type headache (CTTH), drug-induced headache or both. Ninety-six percent of patients diagnosed as having migraine with aura also suffered from migraine without aura. More than 1/3 of patients (37.7%) attending the clinic suffered from chronic daily headache (CDH) (chronic cluster headache excluded), which is not included as a separate entity in the IHS classification. Pure CTTH formed only a small minority of CDH, whereas 86.6% of CDH had migraine as one of the diagnoses. Drug-induced headache was a prominent second or third diagnosis. The advantages and disadvantages of multiple verses single diagnosis in CDH and the need to recognize the natural history of headache disorders in the classification are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1468-2982.1994.1406443.x
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  • 8
    Electronic Resource
    Electronic Resource
    A general theorem on square-integrability: Vector coherent states (1998)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 39 (1998), S. 3954-3964 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: We derive a generalization of the well-known theorem for the square integrability of a unitary irreducible representation of a locally compact group. The generalization covers the case of representations admitting vector coherent states. The result is illustrated by an example drawn from the isochronous Galilei group. The construction yields a wide variety of coherent states, labeled by phase space points, which satisfy a resolution of the identity condition, and incorporate spin degrees of freedom. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.532478
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  • 9
    Electronic Resource
    Electronic Resource
    Quantization of a classical system on a coadjoint orbit of the Poincaré group in 1+1 dimensions (1994)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 35 (1994), S. 4405-4422 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The connection is investigated between quantization by means of coherent states and geometric quantization, when the base manifold is a coadjoint orbit, and hence a homogeneous space, of the (1+1)-dimensional Poincaré group. Coherent states of the Poincaré group stem from a representation that is square-integrable modulo closed subgroup, and so they depend on a measurable section on the given homogeneous space. For each section that leads to a tight frame, a geometric prequantization is constructed, i.e., a Hermitian line bundle with metric connection. Conditions are given under which the two forms associated to the connection and to the coadjoint orbit structure of the base manifold coincide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.530860
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  • 10
    Electronic Resource
    Electronic Resource
    A composite Fourier-wavelet transform and square-integrable group representations (1994)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 35 (1994), S. 4205-4216 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: A formula for a composite Fourier-wavelet transform is suggested, from which the noncommutative Fourier and wavelet transforms can be obtained as particular examples, as well as several other Fourier-type transforms. It is shown how this composite transform can be used to extend certain results, originally obtained for square-integrable group representations, to more general measures, arising in quantum probability theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.530849
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