Sökning: "Environmental stress"

Visar resultat 21 - 25 av 474 uppsatser innehållade orden Environmental stress.

  1. 21. Evaluation of load distribution on ballasted reinforced concrete railway trough bridges

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Byggkonstruktion och brand

    Författare :Alex Eriksson; [2023]
    Nyckelord :Concrete; numerical analysis; trough bridge; railway bridge; finite element model; discrete element method; Betong; numeriskanalys; trågbro; tågbro; finita elementmetoden; diskreta elementmetoden;

    Sammanfattning : A significant portion of the reinforced concrete railway bridges in Sweden are reaching their designed lifespan and are scheduled to be demolished and replaced in the upcoming years. To limit the econom-icand environmental impact related to the replacement of existing railway infrastructure, a comprehen-siveevaluation of their capacity is required with the aim of extending its lifespan. LÄS MER

  3. 22. A Conceptual Design to Enable Lunar 3D Mapping : Analysis Based Design of A Mechanism to Facilitate Electrical Sensor Packaging and Deployment on The Lunar Regolith

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Fatemehsadat Shahrokhi; Soheil Keipour; [2023]
    Nyckelord :Lunar 3D Mapping; Lunar Mining; Structural Analysis; Sensor Probes; Digital Prototyping;

    Sammanfattning : The prospect of mining the moon to extract valuable resources that facilitates upcoming space exploration is what the space industry invests in, in recent years.The Lunar exploration is a solid stepping stone to enable further space exploratory missions, especially Mars. LÄS MER

  4. 23. Assessing the Impacts of Climate Change and Water Scarcity on Agricultural Practices in Kenya -Implications for Adaptation Strategies

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Sanjina Rahi Oishee; [2023]
    Nyckelord :Climate Change; Agriculture; Temperature; Precipitation; Water Scarcity; Agro-Climatic Zone; Earth and Environmental Sciences;

    Sammanfattning : Like other African countries, Kenya’ economy and food security is heavily dependent on agriculture. Climate change has led to variability in temperature and precipitation, and extreme weather events such as droughts and floods, all of which can significantly impact crop productivity and food security in the long-term. LÄS MER

  5. 24. Response of foraminifera Ammonia confertitesta (T6) to ocean acidification, warming, and deoxygenation - An experimental approach

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Elsa Muller; [2023]
    Nyckelord :Acidification; Warming; Deoxygenation; Foraminifera; Ammonia confertitesta T6 ; Culture Experiment; Trace elements; Earth and Environmental Sciences;

    Sammanfattning : Ocean acidification, warmer temperatures, and the expansion of hypoxic zones in coastal areas are direct consequences of the increase in anthropogenic activities. However, so far, the combined effects of these stressors on calcium carbonate-secreting marine microorganisms - foraminifera are complex and poorly understood. LÄS MER

  7. 25. The future is green : How the greenium of corporate bonds evolve over time and what factors impact yield

    Master-uppsats, Jönköping University

    Författare :Daniel Witermark; Adam Neem Laahanen; [2023]
    Nyckelord :Green bond; greenium; OLS regression; Sustainable finance;

    Sammanfattning : Background: The impact of climate change on people's health and lives is a growing concern, with viruses, malnutrition, and heat stress potentially causing up to 250,000 deaths per year between 2030-2050. To address this issue, organizations and institutions are taking action to create a more sustainable world. LÄS MER