Search for dissertations about: "pesticides"

Showing result 31 - 35 of 121 swedish dissertations containing the word pesticides.

  2. 31. Structure and function of microbial communities in constructed wetlands - influence of environmental parameters and pesticides on denitrifying bacteria

    Author : Susann Milenkovski; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; fungicide; concentration-response curves; nosZ; nirS; nirK; bacterial activity; denitrification; bacterial community composition; herbicide; insecticide;

    Abstract : This thesis addresses the interactions and relationships between natural aquatic bacterial communities, environmental parameters, anthropogenic chemicals and the denitrification pathway in the habitat of agricultural constructed wetlands. The main aim was to gain fundamental knowledge of the drivers behind the processes of the denitrification (i.e. READ MORE

  4. 32. Dermal exposure determinants : a pesticide exposure assessment approach for developing countries

    Author : Luis E Blanco Romero; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Dermal exposure; pesticides; determinants of dermal exposure to pesticides; subsistence farmers; fluorescent tracer; visual scoring system;

    Abstract : Background: We know little about the levels of exposure to pesticide in subsistence farmers mainly because of lack of easy to use and low cost pesticide exposure assessment methods. Aim: This thesis aimed to develop a semi-quantitative approach to assess dermal exposure to pesticides relevant for conditions in developing countries. READ MORE

  5. 33. Some hormonal factors in the etiology of endometrial cancer

    Author : Elisabete Weiderpass; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Endometrial neoplasms; hormone replacement therapy; estrogens; progestins; contraceptive agents; organochlorines; pesticides; polychlorinated biphenyls; estrogen receptor alfa polymorphisms;

    Abstract : The main purpose of this dissertation was to study the impact of some hormone-related factors in the etiology of endometrial neoplasms, i.e. hormone replacement therapy, use of oral contraceptives, serum levels of 20 different organochlorine substances, and polymorphisms in the estrogen receptor alpha (ER) gene. READ MORE

  6. 34. Cancer risks in Swedish pesticide applicators in agriculture, forestry and gardening : a toxicological and epidemiological approach

    Author : Jan Dich; Karolinska Institutet; Karolinska Institutet; []
    Keywords : pesticide applicators; cancer incidence; Hodgkin s disease; non-Hodgkin s lymphoma; soft tissue sarcoma; prostate cancer; pesticides; phenoxy acid herbicides; organochlorine insecticides; occupational exposure; protective equipment; smoking habits;

    Abstract : The aims of this thesis were (1) to study the cancer risks in Swedish pesticide applicators, which is one of the occupational groups that is most exposed to pesticides in Sweden. This could be done by utilizing a complete register kept by the Swedish Board of Agriculture which include 20,245 subjects with licenses issued between 1965 and 1976, for epidemiological studies. READ MORE

  7. 35. Pesticide use in rice farming and its impacts on climbing perch (Anabas testudineus) in the Mekong Delta of Vietnam

    Author : Thanh Tam Nguyen; Håkan Berg; Michael Tedengren; Cong Van Nguyen; Joachim Sturve; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mekong Delta; Rice field; Climbing perch; Insecticide; Chlorpyrifos ethyl; Fenobucarb; Mixture; Sequential applications; AChE; Physical Geography; naturgeografi;

    Abstract : The intensification of agricultural production in the Mekong Delta has faced serious challenges with respect to increased use of agrochemicals and especially pesticides. The indiscriminate use of pesticide could potentially impact on the long-term food production, environmental and human health in the delta. READ MORE