Sökning: "Ex situ"

Visar resultat 16 - 20 av 80 uppsatser innehållade orden Ex situ.

1. 16. Play behaviour and maternal relationship between ewe and lambs in Urial sheep (Ovis vignei bochariensis)

   Master-uppsats, SLU/Dept. of Animal Environment and Health

   Författare :Alicia Josefsson; [2022]
   Nyckelord :Urial sheep; play behaviour; social play; locomotor play; maternal behaviour; locomotor behaviour welfare; conservation; ex situ; zoo;

   Sammanfattning : Ex situ conservation is done to alleviate the risk of threatened species going extinct and one major conservation aim is increasing the population size. One place working with ex situ conservation is the zoo Nordens Ark in Sweden, and one of their target species is Urials (Ovis vignei bochariensis). LÄS MER

3. 17. Template-assisted Electrodeposition and Model Electrodes Studied by Electron Microscopy and High Energy X-ray Diffraction

   Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

   Författare :Hanna Sjö; [2022]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : There is a great interest in studying detailed changes at electrode surfaces during electrochemical processes to better understand the electrochemical reactions at the electrode surface-liquid interface and improve the electrode efficiency. The Au(110) surface has a known (1$\times$2) missing row reconstruction in vacuum conditions, which can change into higher-order (1$\times$3), (1$\times$5), and (1$\times$7) depending on environment. LÄS MER

4. 18. Development of covalent organic frameworks for energy storage applications : DAAQ-TFP COF and MXene composite electrodes for proton cycling

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Nanoteknologi och funktionella material

   Författare :Simanjit Singh; [2022]
   Nyckelord :covalent organic framework; DAAQ-TFP; MXene; composite electrodes; 1 3 5-Triformylphloroglucinol; 2 6-Diaminoanthraquinone; nanosheets; exfoliation; ex-situ; Ti3C2Tx;

   Sammanfattning : The demand for today's material resources for energy storage is rapidly increasing and can result in both environmental and political conflicts that can affect the development of electronic devices due to high prices and limitations of raw materials for batteries. In this study, potential future composite electrodes were synthesised with an ex-situ approach by compositing redox-active 2,6-Diaminoanthraquinone and 1,3,5-Triformylphloroglucinol covalent organic framework (DAAQ-TFP COF) with conductive delaminated Ti3C2Tx MXene to maximise the number of redox-active moieties during cycling. LÄS MER

5. 19. Ethylene to Liquid Hydrocarbons by Heterogeneously Catalyzed Oligomerization on ZSM-5

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fysikalisk kemi

   Författare :Gustav Halldén; [2022]
   Nyckelord :ethylene; ethane; oligomerization; catalyst; heterogeneous catalysis ZSM-5; zeolite;

   Sammanfattning : The aim is to produce aliphatic liquid hydrocarbons using heterogeneous ethylene oligomerization. Thiscould potentially produce renewable synthetic fuels. Heterogeneous catalysis has some advantages overhomogeneous catalysis regarding some sustainability aspects. LÄS MER

7. 20. Dioxin i mark : En undersökning kring saneringsmetoder in-situ och on-site.

   Kandidat-uppsats, Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

   Författare :Anton Axelsson; [2022]
   Nyckelord :Dioxin in soil; Dioxin i mark;

   Sammanfattning : Dioxins are among the most toxic substances known to man. Dioxins are hydrophobic organic molecules that accumulate in the food chain and can cause cancer and reproductive difficulties for both animals and humans. A common method for remediating contaminated soil is excavation and transporting the masses to a landfill site. LÄS MER