Sökning: "Helena Westerdahl"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden Helena Westerdahl.

  1. 1. Avian MHC: variation and selection in the wild

    Författare :Helena Westerdahl; MEMEG; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polymorphism; balancing selection; cDNA; avian malaria; great reed warbler; Djurekologi; bird; Animal ecology; immune defence; MHC class II; Major Histocompatibility Complex; MHC class I;

    Sammanfattning : In vertebrates the Major Histocompatibility Complex (MHC) plays a central role in the specific immune defence against various pathogens. Compared with other coding genes the MHC genes exhibit an extremely high level of polymorphism that is maintained by balancing selection. LÄS MER

  3. 2. Det legitima ägandet : Politiska konstruktioner av allmännyttans privatisering i Stockholms stad 1990–2015

    Författare :Helena Löfgren; Malin Gawell; Karl Gratzer; Sofie Tornhill; Stig Westerdahl; Södertörns högskola; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Privatisation; housing policy; rental tenure; property rights; Critical Discourse Analysis; economised language use; legitimation; hegemony; Privatisering; bostadspolitik; hyresrätt; egendomsrätt; kritisk diskursanalys; ekonomiserat språkbruk; legitimering; hegemoni; Politics; Economy and the Organization of Society; Politik; ekonomi och samhällets organisering; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Sammanfattning : During the last decades of the 20th century, a major change in welfare and housing policy was initiated in Sweden. This meant that a significant proportion of public rental housing was privatised through political decisions. LÄS MER

  4. 3. Immunogenetic variation along the latitudinal gradient in Scandinavian anuran species : Evolutionary processes, demography and infection

    Författare :Maria Cortazar-Chinarro; Jacob Höglund; Anssi Laurila; Yvonne Meyer-Lucht; Helena Westerdahl; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biologi; Biology; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Sammanfattning : The evolutionary and demographic processes affecting how genetic variation is partitioned and distributed over large geographical scales is of fundamental importance for our understanding of how organisms may adapt to their environments. Northern peripheral populations generally have lower genetic variation and individuals in these populations may therefore face difficulties adapting to their local environment. LÄS MER

  5. 4. Transcriptional biomarkers of toxicity – powerful tools or random noise? : An applied perspective from studies on bivalves

    Författare :Gustaf Magnus Oskar Ekelund Ugge; Olof Berglund; Annie Jonsson; Helena Westerdahl; Mikael Ejdebäck; Bruno Nunes; Högskolan i Skövde; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biomarkers; Bivalves; Bivalvia; Ecotoxicology; Environmental toxicology; Environmental risk assessment; RT-qPCR; qPCR; Quantitative PCR; Systematic review; Meta-analysis; Dose-response relationships; Concentration-response relationships; Heavy metals; Metals; General toxicity; Copper; Duck mussel; Anodonta anatina; Freshwater; Gene transcription; Biomarkörer; Musslor; Bivalvia; Ekotoxikologi; Miljötoxikologi; Miljöriskbedömning; RT-qPCR; qPCR; Kvantitativ PCR; Systematic review; Metaanalys; Dos-responssamband; Koncentration-responssamband; Tungmetaller; Metaller; Allmän toxicitet; Koppar; Allmän dammussla; Anodonta anatina; Sötvatten; Gentranskription; Ekologisk modellering; Ecological Modelling Group; Biomarkörer; Musslor; Bivalvia; Ekotoxikologi; Miljötoxikologi; Miljöriskbedömning; RT-qPCR; qPCR; Kvantitativ PCR; Systematic review; Metaanalys; Dos-responssamband; Koncentration-responssamband; Tungmetaller; Metaller; Allmän toxicitet; Koppar; Allmän dammussla; Anodonta anatina; Sötvaten; Gentranskription; Biomarkers; Bivalves; Ecotoxicology; Environmental toxicology; Environmental risk assessment; Quantitative PCR; Meta-analysis; Dose-response relationships; Concentration-response relationships; Heavy metals; Metals; General toxicity; Copper; Duck mussel; Freshwater; Gene transcription;

    Sammanfattning : Aquatic organisms are constantly at risk of being exposed to potentially harmful chemical compounds of natural or anthropogenic origin. Biological life can for instance respond to chemical stressors by changes in gene expression, and thus, certain gene transcripts can potentially function as biomarkers, i.e. LÄS MER

  7. 5. Vindlande vägar i bostadsojämlikhetens Sverige : berättelser om marknadspraktiker, flyktingplaceringspolitik och bostadsprekaritet

    Författare :Mikaela Herbert; Stig Westerdahl; Erica Righard; Helena Holgersson; Malmö universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Urban studies; Urbana studier;

    Sammanfattning : Den här doktorsavhandlingen berättar om marknadspraktiker, flyktingplaceringspolitik och bostadsprekaritet i bostadsojämlikhetens Sverige. Huvudpersonerna i berättelserna är människor som sökte asyl och beviljades uppehållstillstånd i Sverige åren runt den så kallade flyktingkrisen 2015 och i fokus är deras boendevägar – deras vindlande vägar – under de första åren i landet. LÄS MER