Sökning: "freezing rate"
Visar resultat 1 - 5 av 39 uppsatser innehållade orden freezing rate.
1. Greenhouse gas emissions from peat soil thawing in spring : a comparison between fertilized and unfertilized soil
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Peat soils drained for agriculture and forestry contribute to a significant amount of greenhouse gas emissions. Nitrous oxide is a greenhouse gas with high warming potential and agriculture in general accounts for about 70 % of nitrous oxide emissions. LÄS MER
2. Conditioned 3D-printed polyamides for structural optimization : Establishing the material data to advance in AM utilization
Master-uppsats, Uppsala universitet/Tillämpad materialvetenskapSammanfattning : Polyamides are commonly used in additive manufacturing for final part production, but the material performance can be affected by environmental conditions. The purpose of this project was to evaluate the effects of moisture and temperature on 3D printed polyamides and how structural optimization can benefit from condition-specific data. LÄS MER
3. Use of a Sperm-Hyaluronan Binding Assay for evaluation of sperm quality in dromedary camels
Master-uppsats, SLU/Dept. of Clinical SciencesSammanfattning : The objective of this study was to assess the potential of Hyaluronan Binding Assay (HBA) to predict freezability and fertilization capacity of dromedary camel spermatozoa, and to determine if conventional sperm quality parameters and precursor of A-Kinase Anchoring Protein 4 (proAKAP4) values correlate with HBA results. Two semen samples were collected from each of six male camels. LÄS MER
4. Fragmentation in graupel snow collisions
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : Aircraft observations of precipitating clouds with cloud top temperatures higher than -38°C have revealed that Secondary Ice Production (SIP) is responsible for presence of majority of ice particles. One such SIP mechanism is fragmentation via collisions between ice particles. LÄS MER
5. Double-layer vs single-layer cryogels as a dye affinity chromatography column, comparison study
Master-uppsats, Lunds universitet/Kemiska institutionenSammanfattning : Dye affinity chromatography is one of the chromatography techniques which uses dye as a ligand for protein purification. In this study, single-layer poly(acrylamide-allyl glycidyl ether) cryogel was prepared, which contains free epoxy groups at sub-zero temperature. LÄS MER