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Showing result 1 - 5 of 80 essays matching the above criteria.

  1. 1. Combustibility study of resin for warm magnet coils used at CERN

    University essay from Lunds universitet/Avdelningen för Brandteknik

    Author : Juan Carlos Lopez Santiago; [2023]
    Keywords : Epoxy resin; flammability; radiation; aging; cone calorimeter; micro combustion calorimeter; thermogravimetric analysis; lateral ignition and flame spread test; chemical composition of polymers; polymers; epoxy composite; polymer composite; failure of epoxy resins; magnetic coil; Technology and Engineering;

    Abstract : CERN is the world's largest particle physics laboratory, housing multiple accelerators that rely heavily on magnetic coils. These coils are integral to the generation of powerful magnetic fields essential for particle accelerator experiments, detectors, and other equipment. READ MORE

  3. 2. Mercury accumulation in lake sediments on different time scales – the influence of algal primary production

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Anne Rebotzke; [2023]
    Keywords : mercury; lake sediment; primary productivity; algal scavenging; biogenic silica; diatom proxy; chlorophyll-a; organic matter;

    Abstract : The aim of this work is to test the proposed approach of algal scavenging as a driver of sediment mercury (Hg) on different time scales and to gain a better understanding of the mechanisms of Hg accumulation in lake sediments. A 3000-year sediment record from Nylandssjön in northern Sweden was analysed for this purpose, as well as a 20-year sediment record from the seasonal sediment traps of this lake. READ MORE

  4. 3. Chemical modification of starch in order to get thermoplastic properties

    University essay from KTH/Materialvetenskap

    Author : Emma Hallbert; Elsa Wadman; [2023]
    Keywords : thermoplastic starch; dialdehyde starch; schiff-base; imine chemistry; termoplastisk stärkelse; dialdehydstärkelse; schiffbas; iminkemi;

    Abstract : There are numerous advantages of replacing traditional non-biodegradable synthetic plastics with bio-based plastics. Starch is globally available, cheap, renewable, and biodegradable. However, starch has a poor product performance and is relatively difficult to process, as conventional melt processing techniques cannot be used. READ MORE

  5. 4. Mikroplaster i damm från ridunderlag - pilotstudie

    University essay from SLU/Dept. of Anatomy, Physiology and Biochemistry

    Author : Niklas Nilsson; [2023]
    Keywords : fibersand; underlag; häst; nedbrytning;

    Abstract : Ridsporten är en av de största ungdomsidrotterna inom Sverige. År 2018 beräknades det att cirka 5 miljoner ridtimmar genomförs på landets ridskolor årligen. På grund av Sveriges klimat spenderas mycket av denna tid inom ridhus. READ MORE

  6. 5. Microplastics in food webs- occurrence in Lake Vänern brown trout (Salmo trutta) and its main prey

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Hanna Nordström; [2023]
    Keywords : microplastic; freshwater; fish; brown trout; mikroplast; sötvatten; fisk; öring;

    Abstract : Over the past decade, research on microplastic pollution has gained significant attention. Research regarding microplastic occurrence in freshwater fish, however is still scarce. While possible pathways have been investigated, passive transfer via ingestion of prey, and possible bioaccumulation in different organs remains relatively unstudied. READ MORE