Sökning: "Lena Brynhildsen"

Hittade 2 avhandlingar innehållade orden Lena Brynhildsen.

  1. 1. Interactions between metals and bacteria : Importance for metal speciation

    Författare :Lena Brynhildsen; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : The objective of this thesis is to contribute to the understanding of the interactions between metals and microorganisms with respect to* Toxicity of metals (Cd, Cu, Hg, Zn)* Mineralization of metal-organic complexes (citric acid, histidine)* Metal adsorption (Cs, Sr, Eu, Hg, Zn, As)Most of the studies were made on the gram-negative bacterium Klebsiella oxytoca, but the work also involved a Serratia as as well as mixed cultures of microorganisms from soil systems.Most previous studies, reported in the literature, on the toxic effects of metals on microorganisms have been performed at high nutrient levels, despite the fact that microorganisms in nature normally live under energy-limited conditions. LÄS MER

  3. 2. Teenagers´unintended pregnancies and contraception

    Författare :Gabriella Falk; Jan Brynhildsen; Ann-Britt Ivarsson; Lena Marions; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Teenagers; unintended pregnancies; legal abortion; contraceptive counselling; postpartum visit; Chlamydia trachomatis; Tonåringar; oplanerade graviditeter; preventivmedel; preventivmedelsrådgivning; abort; kvalitativ innehållsanalys; Teenagers; adolescents; unintended pregnancies; contraception; contraceptive counselling; induced abortion; qualitative content analysis; Obstetrics and gynaecology; Obstetrik och gynekologi;

    Sammanfattning : Teenage pregnancies are often not intended, and there is a high risk that unintended pregnancies will lead to abortion. The wide-spread availability of Youth Clinics, the subsidizing of contraceptives and the introduction of new and effective contraceptives have failed to lower the abortion rates. LÄS MER