Sökning: "Individual adaptation"

Visar resultat 21 - 25 av 257 avhandlingar innehållade orden Individual adaptation.

1. 21. Finding fitness : empirical and theoretical explorations of inferring fitness effects from population-level SNP data

   Författare :Bea Angelica Andersson; Xiao-Ru Wang; Åke Brännström; Tanja Slotte; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; distribution of fitness effects; site frequency spectra; missing data filtering; downsampling; imputation; sample size; population structure; inbreeding; selfing; homozygosity; Arabidopsis; Pinus; DFE-alpha; SLiM; population genomics; adaptation; biology; biologi; evolutionär genetik; evolutionary genetics; populationsbiologi; Population Biology; molekylärbiologi; Molecular Biology; Genetics; genetik;

   Sammanfattning : The distribution of fitness effects (DFE) describes the likelihood that a new mutation has a specific effect on the fitness of an individual in a given population. The shape of the DFE is a result of several factors such as population size, mating system and selective environment, and can in turn influence the evolutionary potential of a species. LÄS MER

3. 22. Protective Responses to Freediving Reveal High-Altitude Tolerance

   Författare :Pontus Holmström; Erika Schagatay; Angelica Lodin-Sundström; Harald K. Engan; Ola Eiken; Mittuniversitetet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Acclimatization; Acute Mountain Sickness; Adaptation; Apnea; Breath-hold diving; Cardiovascular diving response; High-altitude; Hypoxia tolerance; Spleen; Acklimatisering; Andhållningsdykning; Anpassning; Apné; Kardiovaskulära dykresponsen; Hög höjd; Hypoxitolerans; Hög-höjdssjukdom; Mjälte; Syrebärande kapacitet;

   Sammanfattning : High-altitude mountaineers - just as freedivers - are exposed to hypoxia. During freediving, the diving response leads to reduced oxygen consumption, and splenic contraction increases circulating hemoglobin concentration (Hb), which enhances freediving performance. LÄS MER

4. 23. Asthma and respiratory symptoms related to the housing environment

   Författare :Margot L. A. Frisk; Kitty Kamwendo; Ann-Britt Ivarsson; Göran Stridh; Christer Janson; Örebro universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Accessibility; adaptation; asthma; housing environment; risk indicators; index; occupational therapy; prevention; respiratory symptoms.; Caring sciences; Vårdvetenskap; Vårdvetenskap; Nursing Science; Vårdvetenskap med inriktning arbetsterapi; Nursing Science w. Occupational Therapy Focus;

   Sammanfattning : The overall aim of this dissertation was to study the housing environment with a focus on indoor climate factors which may maintain or worsen respiratory symptoms among persons with asthma.Quasi-experimental and cross-sectional designs and a case-control approach were used. LÄS MER

5. 24. From Domain Adaptation to Federated Learning

   Författare :Zahra Taghiyarrenani; Sławomir Nowaczyk; Sepideh Pashami; Mohamed-Rafik Bouguelia; Eirini Ntoutsi; Högskolan i Halmstad; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Data-driven methods have been gaining increasing attention; however, along with the benefits they offer, they also present several challenges, particularly concerning data availability, accessibility, and heterogeneity, the three factors that have shaped the development of this thesis. Data availability is the primary consideration when employing data-driven methodologies. LÄS MER

7. 25. Mechanisms of genetic adaptation in Helicobacter pylori

   Författare :Anna Skoglund; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Helicobacter pylori is one of the most common bacteria worldwide, estimated to infect half of the human population. The infection is usually established in childhood and persists for a lifetime, unless treated. Most individuals never experience symptoms from H. LÄS MER