Sökning: "retention"

Visar resultat 21 - 25 av 846 avhandlingar innehållade ordet retention.

  1. 21. Function and dynamics of woody debris in boreal forest streams

    Författare :Niklas Dahlström; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Boreal forest; CPOM; CWD; forest management; geomorphology; LWD; riparian forest; retention; residence time; streams; Sweden; woody debris; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : The work in this thesis deals with (1) the effects of woody debris on stream channel morphology and retention of organic material, and (2) the dynamics of woody debris and its relation to riparian forest history and composition. The studied stream reaches are situated in mature, productive forests in the boreal zone of Sweden. LÄS MER

  3. 22. A National Swedish Methadone Program 1966-1989

    Författare :Leif Grönbladh; Lars Gunne; Ulf Rydberg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Psychiatry; heroin addiction; methadone maintenance treatment; rehabilitation; mortality; criminality and prostitution; retention; HIV-protection; treatment strategy; Psykiatri; Psychiatry; Psykiatri;

    Sammanfattning : Methadone Maintenance treatment of compulsive opioid addiction was started by the study of Dole and Nyswander (1965) and has subsequently been replicated in programs throughout the world. Methadone treatment has become the most effective modality for the treatment of chronic heroin addiction. LÄS MER

  4. 23. Health workforce development post-1990s health sector reforms : the case of medical doctors in Tanzania

    Författare :Nathanael Sirili; Anna-Karin Hurtig; Isabel Goicolea; Angwara Denis Kiwara; Ottar Mædstad; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; health sector reforms; health workforce; doctors; training; deployment; retention; decentralized health sector; public-private partnership; rural; Tanzania; low- and middle- income countries; Public health; folkhälsa;

    Sammanfattning : Background: Health systems in many low- and middle-income countries suffer from critical shortages and inequitable geographical distribution of the health workforce. Since the 1940s, many low- and middle-income countries have passed through different regimes of health sector reforms; the most recent one was in the 1990s. LÄS MER

  5. 24. Atherogenic lipoproteins and their interaction with proteoglycans

    Författare :Christofer Flood; Göteborgs universitet; []
    Nyckelord :apolipoprotein B; atherosclerosis; LDL; proteoglycan; sPLA2; ; retention;

    Sammanfattning : Atherosclerosis is a multi-factorial disease and its pathogenesis is still unclear. However, accumulating evidence during recent years has led to the concept that subendothelial retention of atherogenic lipoproteins is the initiating event in atherogenesis. LÄS MER

  7. 25. Growth rate control of periplasmic product retention in Escherichia coli

    Författare :Emma Bäcklund; Gen Larsson; Stefan Schmidt; Amelie Eriksson Karlström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Escherichia coli; fed-batch; outer membrane proteins; recombinant proteins; specific growth rate; periplasmic retention; phosphotransferase system; high cell density cultivation; acetate formation; Bioengineering; Bioteknik;

    Sammanfattning : The recombinant product is secreted to the periplasm in many processes where E. coli is used as host. One drawback with secretion is the undesired leakage of the periplasmic products to the medium. The aim of this work was to find strategies to influence the periplasmic retention of recombinant products. LÄS MER