Sökning: "longevity"

Visar resultat 1 - 5 av 195 avhandlingar innehållade ordet longevity.

1. 1. Age, Longevity and Life-History Trade-Offs in the Collared Flycatcher (Ficedula albicollis)

   Författare :Joanna Sendecka; Lars Gustafsson; Anna Qvarnström; Pat Monaghan; Uppsala universitet; []
   Nyckelord :Ecology; age; collared flycatcher; Ficedula albicollis; long-term study; senescence; longevity; reproductive success; selection; individual quality; breeding experience; reproductive effort optimization; terminal investment; life-history trade-offs; reproductive costs; Ekologi;

   Sammanfattning : Age is often a neglected factor in ecological studies. However, age-related changes in reproduction and survival of organisms may strongly influence population dynamics. LÄS MER

3. 2. Studying ageing: experiences, description, variation, prediction and explanation

   Författare :Bo G. Eriksson; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology; Gerontology; Demography; Longevity; Health promotion; Social facts; Sense of cohesion; Population; Random sample.;

   Sammanfattning : The study follows a line of experiences, description, variation, prediction and explanation concerning ageing, health promotion and longevity. The experiences of aging were acquired during my studies of conversations, participation in longitudinal population studies in Gothenburg, and working with the Centre for Development of Home help services. LÄS MER

4. 3. Actomyosin in biocomputation

   Författare :Aseem Salhotra; Alf Månsson; Henry Hess; Linnéuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; biocomputation; molecular motors; 3-SAT; surface chemistry; actomyosin; actin; myosin II; heavy meromyosin; myosin XI; engineered myosin; in vitro motility assay; nanofabrication; alternate computing; network based biocomputation; protein-surface interaction; longevity; prolongation; surface recycling; affinity purification; blocking actin; Bioteknik; Biotechnology; Biokemi; Biochemistry;

   Sammanfattning : There exist complex mathematical problems that are important in real world applications such as weather prediction, molecular modelling, network route optimization and more. In general, such problems are solved using supercomputers with higher computing efficiency but this also consumes high energy along with high production and maintenance cost. LÄS MER

5. 4. The ecological significance of sexual reproduction in peat mosses (Sphagnum)

   Författare :Sebastian Sundberg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Bryophyte; colonisation; disturbance; experiment; longevity; mire; safe site; spore; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; ekologisk botanik; Ecological Botany;

   Sammanfattning : Peat mosses (Sphagnum) are widely distributed and are a major component of mire vegetation and peat throughout the boreal and temperate regions. Most boreal Sphagnum species regularly produce sporophytes, but the ecological role of the spore has been questioned. LÄS MER

7. 5. Large-scale releases of native species : the mallard as a predictive model system

   Författare :Pär Söderquist; Högskolan Kristianstad; Sveriges lantbruksuniversitet; []
   Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; NATURVETENSKAP; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Anas platyrhynchos; Farmed; Hunting; Introgression; Longevity; Mallard; Migration; Morphology; Population genetic; Restocking; SNPs; Sweden;

   Sammanfattning : Human alteration of natural systems, and its consequences are of great concern and the impact on global ecosystems is one of the biggest threats that biodiversity stands before. Translocations of invasive species, as well as intraspecific contingents with non-native genotypes, whether they are deliberate or unintentional, are one such alteration and its consequences are continuously being assessed. LÄS MER