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Visar resultat 1 - 5 av 34 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Stress in chickens : Effects of domestication and early experience on behaviour and welfare

   Författare :Maria Ericsson; Per Jensen; Linda Keeling; Bjarne Braastad; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The domestication is the process where animals have adapted to human conditions. A prerequisite for domestication is tame behaviour towards humans and subsequently, selection for other desirable traits took place which led to changes in several behavioural and physiological parameters. LÄS MER

3. 2. Early Experience, Maternal Care and Behavioural Test Design : Effects on the Temperament of Military Working Dogs

   Författare :Pernilla Foyer; Per Jensen; Martin Norsell; Daniel Mills; Försvarshögskolan; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Early experience; Maternal care; Dog; Military Working Dog; Behaviour; Temperament test; Stress; Försvarssystem; Military Technology;

   Sammanfattning : Domestication has resulted in animals with broad variations between as well as within breeds, which allows for the selection and breeding of animals for preferred traits. This selection has affected both the genotypes and phenotypes of animals. LÄS MER

4. 3. On enchytraeids and naidids: Life history traits and responses to environmental stress

   Författare :Anna-Karin Augustsson; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; oligochaeta; terrestrial naididae; toxicity testing; asexual reproduction; sexual reproduction; drought; environmental stress; metal pollution; Ekologi; Animal ecology; Djurekologi;

   Sammanfattning : My thesis shows that enchytraeids and naidids are sensitive to various forms of environmental stress, which in combination with the wide distribution of both families make them highly suitable for use in risk assessment and soil monitoring. Enchytraeids were subject to chemical stress under both laboratory and field conditions. LÄS MER

5. 4. Nitrates and Left Ventricular Dysfunction

   Författare :Erik Tingberg; Kardiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; lipid peroxidation; malondialdehyde; peptide; brain natriuretic peptide; left ventricular dysfunction; nitrates; acute myocardial infarction; heart failure; atrial natriuretic; diuretics; echocardiography; haemodynamic measurements; neurohumoral activation; diastolic dysfunction; Cardiovascular system; Medicin människa och djur ; Medicine human and vertebrates ; Kardiovaskulära systemet; oxidative stress; isoprostanes;

   Sammanfattning : Use of beta-blockers and inhibitors of the renin angiotensin system (RAS) is established practice in the treatment of chronic heart failure (CHF). Clinical studies also suggest beneficial long-term effects of nitrates in CHF. LÄS MER

7. 5. Trait anxiety as a determinant of psychological test results

   Författare :Roger Persson; Institutionen för psykologi; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Medicine human and vertebrates ; Environmental health; industrial medicine; Occupational health; work stress; toxic encephalopathy; symptom reporting; neuropsychological testing; organic solvents; repression; psychological methods; social desirability; anxiety; Personality traits; Medicin människa och djur ; Miljömedicin; arbetsmiljömedicin; Yrkesmedicin;

   Sammanfattning : This thesis deals with the problem of interpreting test scores. The intention has been to explore and elucidate the effects of trait anxiety on test scores that have been obtained in applied research settings. LÄS MER