Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Quality of life of Danish women: Population-based norms for the EORTC QLQ-C30 (1997)
    Springer
    Quality of life research 6 (1997), S. 0-0 
    Details
    ISSN: 1573-2649
    Keywords: EORTC-QLQ-C30 ; breast cancer ; gynaecological cancer ; norms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this study was to derive population-based norms for women completing the EORTC QLQ-C30 version 1 which is designed for use with patients who have cancer. The study was conducted using two different questionnaires: one designed for use in female patients with breast cancer, the other for those with gynaecological cancers, but both including the EORTC QLQ-C30. The women were drawn from the Danish Central Population Register without knowledge of their health status and divided at random between the two questionnaires. All procedures for collecting data were identical. The response rate for those receiving the gynaecological cancer (GS) questionnaire was 49% and it was 71% for the breast cancer (BS) questionnaire. Detailed comparison between the two samples revealed several EORTC QLQ-C30 items showing a clear difference in distribution of scores between them. Because of this and the possible bias due to the relative low age-related response rate in GS, only the results from the BS are used for constructing norms. The norms cover all 30 single items on the EORTC QLQ-C30 and the nine derived scales, for women in four 10-year age groups commencing at 30 years and for those aged 70-75. Clear trends in, for example, declining ability to undertake strenuous activity are illustrated and quantified. Levels of certain symptoms, such as pain, are surprisingly high although it is recognized that the population sampled will contain a proportion of women with active disease including cancer. We recommend the use of these norms both as an aid to the clinical assessment of an individual patient, and to assist in the interpretation of clinical trial and longitudinal quality of life data. As a secondary result, we note that a population-based sample will have a lower response rate to a questionnaire with more questions, especially if many of these extra questions are on sexual issues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026461310761
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Concentration dependence of the time lag for diffusion (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 5 (1967), S. 1300-1304 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.160050625
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Mass and momentum transfer in polymers. I. Effects of equilibrium vapor sorption on tensile creep of an amorphous polymer (1972)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 10 (1972), S. 887-907 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Diffusion and tensile creep measurements were made for systems of poly(-n-butyl methacrylate) (PBMA) and sorbed ethanol, MEK, or benzene at 23°C. Rates of penetration of an inert spherical indenter into PBMA also were investigated and compared with the tensile creep behavior of the polymer. Creep measurements for various volume fractions of penetrant sorbed at equilibrium revealed that master curves, resulting from a time-concentration superposition procedure, could be constructed for each penetrant. At long times, these master curves, particularly that for ethanol, show deviations from the corresponding time-temperature superposition master curve. These deviations are interpreted in terms of probable long-range entanglement coupling governed in part by the partially specific nature of polymer-penetrant interactions. Parameters calculated by a free-volume theory, describing both diffusion and tensile-creep data, indicate that MEK is a more efficient plasticizing agent than the other penetrants and requires less local free volume for diffusion. Analysis in terms of the free volume concept was not attempted for the case of ethanol, where specific polymer-penetrant interactions are more important.
    Additional Material: 18 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1972.160100510
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Mass and momentum transfer in polymers. III. Effects of liquid penetrants on tensile stress relaxation of amorphous polymers (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 11 (1973), S. 1555-1572 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Sorption, diffusion, swelling, and tensile stress relaxation measurements were made at room temperature (23°C) for the systems poly(n-butyl methacrylate) (PBMA) with liquid methanol and ethanol, and poly(methyl acrylate) (PMA) with liquid water. Stress relaxation curves for the fully swollen polymers could be superimposed approximately with those for the dry polymers by appropriate shifting along the long axes. For PMA-water the measured curve for stress relaxation with concurrent sorption could be predicted accurately by using a moving boundary theory with data measurements of stress relaxation of the unswollen and swollen polymer combined with sorption data. The modified moving boundary theory is generalized to include the effects of dimension changes through swelling and the larger effects of plasticization associated with sorption of liquids. This improved theory accurately predicts measured curves of stress relaxation with concurrent sorption for the PBMA-alcohol systems from individual stress relaxation, sorption, diffusion and swelling data. The general approach should be applicable to other amorphous polymer-liquid swelling agent systems. The anisotropic nature of swelling of polymer films and its effect on calculated diffusion coefficients are discussed briefly.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.180110806
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Mass and momentum transfer in polymers. II. Effects of concurrent sorption or desorption of penetrant on tensile creep of an amorphous polymer (1973)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 11 (1973), S. 1535-1554 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Techniques have been developed for the prediction of tensile creep behavior of rubbery amorphous polymers with concurrent sorption or desorption of penetrant. The procedures require knowledge of polymer-penetrant interdiffusion behavior and the creep behavior of dry polymer and of polymer swollen to equilibrium. The techniques are based upon a moving boundary treatment, proposed by Kishimoto and Fujita, which has been modified and extended to consider two types of boundary definition, desorption in addition to sorption, and extension of the analysis to longer times. Calculated curves for the concurrent processes of diffusion and creep in the systems poly(n-butyl methacrylate) with ethanol, methyl ethyl ketone, or benzene vapors at 23°C agree to a good approximation with those measured directly. Diffusion coefficients calculated from the measured concurrent curves also are comparable with those measured directly in previous studies. The techniques are useful initial procedures which, with some further modification or extension, should lead to a more general description of concurrent mass and momentum transfer in polymer-penetrant systems.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1973.180110805
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...