Sökning: "isolation by environment"

Visar resultat 1 - 5 av 107 avhandlingar innehållade orden isolation by environment.

  1. 1. Endogenous Opioids and Voluntary Ethanol Drinking : Consequences of Postnatal Environmental Influences in Rats

    Författare :Lisa Gustafsson; Ingrid Nylander; Erika Roman; Ryszard Przewlocki; Uppsala universitet; []
    Nyckelord :Pharmaceutical pharmacology; Maternal separation; Maternal deprivation; Handling; Isolation; Alcohol; Two-bottle model; Four-bottle model; MEAP; Dynorphin B; Nociceptin orphanin FQ; Radioimmunoassay; Farmaceutisk farmakologi;

    Sammanfattning : Genetic and environmental factors interact to determine the individual vulnerability to develop ethanol dependence. The neurobiological mechanisms underlying these processes are not fully understood. Endogenous opioid peptides have been suggested to contribute. LÄS MER

  3. 2. Adjusting to the extreme : Thermal adaptation in a freshwater gastropod

    Författare :Magnus Johansson; Laurila Anssi; Robby Stoks; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radix balthica; Lake Mývatn; geothermal springs; thermal adaptation; isolation by environment; population structure; gene flow; cogradient variation; AFLP; thermal preference; CTmax; Biologi med inriktning mot populationsbiologi; Biology with specialization in Population Biology;

    Sammanfattning : Temperature is a ubiquitous force influencing biological processes ranging from cellular responses to life span. The thermal environment for many organisms is predicted to change with globally increasing temperatures and studies conducted in natural systems incorporating various evolutionary forces, such as gene flow, is needed. LÄS MER

  4. 3. See and Be Seen : An Inquiry into the Role of Public Space in Combating Loneliness

    Författare :Jing Jing; Tigran Haas; David Canter; Lena Dahlberg; Fran Tonkiss; KTH; []
    Nyckelord :Loneliness; social isolation; public space; third place; social infrastructure; streetscapes; care; aging; age-friendly; theory of place; built environment; social interaction; sense of community; belonging; neighborhood attachment; sorting; mixed-methods; urban design; urban planning; intervention; Ensamhet; social isolering; offentliga rum; tredje plats; social infrastruktur; gatumiljöer; omsorg; åldrande; äldrevänlig; teori om plats; byggd miljö; umgås; känsla av gemenskap; tillhörighet; tillgivenhet mot grannskap; sortering; mixade metoder; urban design; stadsbyggnad och stadsplanering; bekämpa ensamhet; Urban and Regional Studies; Urbana och regionala studier;

    Sammanfattning : Loneliness in cities has been an issue of great concern in public discourse, particularly during and in the aftermath of the COVID-19 pandemic. The detrimental impact of loneliness on health and well-being is well documented and has recently become a rising priority for governments worldwide. LÄS MER

  5. 4. Predation as a driver of reproductive isolation - from adaptive divergence to hybrid inviability

    Författare :Varpu Pärssinen; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reproductive isolation; ecological speciation; predation; adaptive radiation; evolution; behaviour; fish;

    Sammanfattning : Natural selection can play an important role in the origin of new species. When reproductive isolation evolves as a result of ecologically-based divergent natural selection, the process is referred to as ecological speciation. In most organisms, sufficient reproductive isolation is considered to be essential for the establishment of new species. LÄS MER

  7. 5. Secure execution environment for Java electronic services

    Författare :Almut Herzog; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Java; security; Residential Gateway; threads; resource control; Computer science; Datavetenskap;

    Sammanfattning : Private homes are becoming increasingly connected to the Internet in fast and reliable ways. These connections pave the way for networked services, i.e. services that gain their value through their connectivity. LÄS MER