Sökning: "Headspace"
Visar resultat 11 - 15 av 30 avhandlingar innehållade ordet Headspace.
11. Odour guided predation on acorns by small rodents during direct seeding
Sammanfattning : Costs related to planting of seedlings and plant material is a major economic obstacle that may impede successful large-scale forest restoration. One way to reduce this cost is to use direct seeding instead of planting. Nut-bearing trees such as oaks have seeds with large nutrient storage that results in competitive seedlings. LÄS MER
12. Evaluation of volatile organic compounds related to board based packaging by use of instrumental and sensory analysis
Sammanfattning : The main topic of the thesis is characterisation and evaluation of volatile organic compounds emitted by packaging materials based on paperboard products. The properties and concentration of these compounds are critical to how well these materials perform when applied as a main component of food packaging. LÄS MER
13. Stress Related Emissions of Norway Spruce Plants
Sammanfattning : The interactions between plants and insects are mediated by volatile molecules. Plants respond to stress by biosynthesis of chemical substances which can deter invading insects or pathogens. Some of these substances are volatile and are emitted to the surroundings and may attract or repel insects. LÄS MER
14. Chemical defence in Norway spruce
Sammanfattning : Norway spruce (Picea abies) responds to stress by biosynthesis of chemical substances, which can deter invading insects or pathogens. Some of these substances are volatile and can be emitted to the surroundings while others are accumulated within the tree. LÄS MER
15. Smells of sociality : insect chemoreceptors, sex and habitat cues
Sammanfattning : The last two decades have seen considerable research effort dedicated to understanding the molecular basis of insect olfaction. There are, however, many knowledge gaps, especially when it comes to how insects detect different olfactory stimuli from the environment. LÄS MER
