Bibliothek

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • Digitale Medien  (2)
  • Curculionidae  (1)
  • reliability  (1)
Materialart
  • Digitale Medien  (2)
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Entomologia experimentalis et applicata 64 (1992), S. 167-176 
    ISSN: 1570-7458
    Schlagwort(e): Curculionidae ; Sitona hispidulus ; Leguminosae ; nodule herbivory ; compensatory growth
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A laboratory study was conducted to examine the hypothesis that herbivory of nitrogen-fixing root nodules on legumes causes an exact compensatory response in nodule growth. Plants of Medicago sativa (L.) were grown hydroponically in clear plastic growth pouches so that the number and biomass of root nodules could be estimated nondestructively before, and 10 and 18 days after, partial denodulation. For treatments, plants were subjected to 23% denodulation by first-instar larvae of Sitona hispidulus (F.) (a common herbivore of Medicago and Trifolium) or 50% nodule pruning; additional plants were left untreated. Results indicated that nodule herbivory and nodule pruning caused an overcompensatory response in number of nodules. This was also true for number of nodule units (an indirect measure of nodule biomass) per plant at 10 days after denodulation but had changed to an exact compensatory response by day 18. An inverse relationship between change in number of nodule units and initial number of nodules indicated that compensatory nodulation was regulated by a feedback mechanism. Shoot and root biomasses were not affected by denodulation in this study.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    ISSN: 1573-2649
    Schlagwort(e): Health status ; menorrhagia ; reliability ; validity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract A patient-administered questionnaire for menorrhagia based on the type of questions asked when taking a gynaecological history was developed and tested using the following steps: literature reviews, devising the questions, testing responses for internal consistency and test-retest reliability and validating the questionnaire by comparing patient's scores with their responses to the SF-36 general health measure, and with family practitioner perceptions of severity. The main sample consisted of 351 women with menorrhagia, 246 referred to gynaecology ambulatory clinics and 105 from four large training practices in North-east Scotland. Following testing, two questions were discarded from the questionnaire. The final questionnaire demonstrated a good level of reliability and the resulting patient scores correlated significantly with their scores on the scales making up the general health measure. The questions asked in taking a clinical history from a woman with menorrhagia can be used to construct a valid and reliable measure of health status. This clinical measure may be a useful guide in selection for treatment and in the assessment of patient outcome following treatment.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...