Essays about: "freezing"

Showing result 31 - 35 of 166 essays containing the word freezing.

  1. 31. Snow-graupel collisions in clouds: a newly derived formulation for breakup of single crystals

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Victor Craig van der Brug; [2022]
    Keywords : Physical Geography and Ecosystem Analysis; Secondary Ice Production; Ice Cloud Number Concentration; Cloud Ice; Ice-Ice Collisions; Snow Crystal; Atmospheric Science Biogeochemical Cycles; Earth and Environmental Sciences;

    Abstract : The observed and well-known discrepancy between concentrations of ice nucleating particles in the environment and the concentrations of ice particles in clouds show that there are additional ‘secondary’ processes enhancing the concentrations of ice particles. In present-day modelling of weather and climate, such processes are mostly overlooked and thus a cause for uncertainty. READ MORE

  3. 32. Double-layer vs single-layer cryogels as a dye affinity chromatography column, comparison study

    University essay from Lunds universitet/Kemiska institutionen

    Author : Thi Hoai Thu Trinh; [2022]
    Keywords : dye-affinity chromatography; single-layer cryogels; double-layer cryogels; protein purification; bovine serum albumin; biochemistry; Chemistry;

    Abstract : 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. READ MORE

  4. 33. Effects of melatonin and Single Layer Centrifugation on cryosurvival of ram semen samples

    University essay from SLU/Dept. of Clinical Sciences

    Author : Lea Enenkelová; [2021]
    Keywords : sheep reproduction; Jezersko-Solčava sheep breed; colloid centrifugation; melatonin;

    Abstract : The composition of the ram sperm membrane renders it vulnerable to injury during cryopreservation. Production of reactive oxygen species, which are by-products of metabolism, increases during freezing and thawing, causing damage to sperm membranes and acrosomes as well as affecting mitochondrial activity. READ MORE

  5. 34. Survival of Campylobacter jejuni in frozen chicken breast fillet

    University essay from SLU/Department of Molecular Sciences

    Author : Ella Råhlén; [2021]
    Keywords : Campylobacter jejuni; broiler meat; frozen; survival; ST-257; ST-918;

    Abstract : This thesis aimed to study how two sequence types of Campylobacter jejuni, ST-257 and ST-918, survive freezing in broiler fillets. Campylobacteriosis is the most reported zoonosis in the EU, with over 200,000 reported cases annually. Broilers are considered the primary source of human exposure. READ MORE

  6. 35. Adaptation of buildings for climate change : A literature review

    University essay from Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Author : Cheng Cheng; [2021]
    Keywords : Climate change; Extreme weather; Building energy efficiency; Passive houses;

    Abstract : In September 2020, Northeast China suffered three unprecedented typhoons in half a month, and there was freezing rain in early November, all of which led to the large-scale urban power failure. The occurrence of these phenomena makes people directly see climate change and its impact on the living environment of human beings. READ MORE