Sökning: "spaceflight"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet spaceflight.

  1. 1. Chromatin accessibility analysis of spaceflight mouse brains using ArchR

    Master-uppsats, KTH/Genteknologi

    Författare :Raphaël Mauron; [2023]
    Nyckelord :Single nuclei ATAC-sequencing; Space Biology; DNA Chromatin accessibility; Neurodegenerative; ArchR; ATAC-sekvensering av enskilda kärnor; rymdbiologi; tillgänglighet av DNA kromatin ; neurodegenerativa sjukdomar; ArchR;

    Sammanfattning : Mänsklig utforskning av månen och Mars innebär stora utmaningar för människans fysiologi och hälsa på grund av de unika miljöfaktorer som följer av långvariga rymduppdrag. Rymdbiologiska experiment har blivit ett viktigt verktyg för att studera effekterna som mikrogravitation och rymdstrålning har på levande organismer, i syfte att förstå och minska dessa utmaningar. LÄS MER

  3. 2. Electric propulsion of satellites as an alternative for implementation of a sunshade system

    Kandidat-uppsats, KTH/Fysik

    Författare :Maheen Arfan; Isabelle Bonnier; [2022]
    Nyckelord :Geoengineering; Sunshade system; Electric propulsion; Orbital mechanics; Sub-lagrange;

    Sammanfattning : As an alternative solution to global warming, this thesis explores the possibility of aspace-based geoengineering scheme that may prove worthwhile to implement in parallel toother environmental efforts that help mitigate impact of climate change. One suggestionof a geoengineering solution is deploying a large number of sunshades in the vicinity ofthe first Lagrange point of the Sun-Earth system, and this prospective sunshade projectwould serve to shield Earth from incident solar radiation. LÄS MER

  4. 3. Spatially resolved gene expression profiling of mouse brain tissue to study the impact of spaceflights

    Master-uppsats, KTH/Proteinvetenskap

    Författare :Paula Frieberg; [2021]
    Nyckelord :spaceflight; space biologu; Spatial Transcriptomics; mouse brain tissue; mitochondria;

    Sammanfattning : Since the first human spaceflight in 1961, hundreds of humans have been in space. Microgravity and high radiation are the main spaceflight hazards. The space environment is known to impact several aspects of human health, such as bone density and cognitive performance. LÄS MER

  5. 4. Sunshade Demonstrator Spacecraft Earth Sphere of Influence Escape Using a Propellant-free AOCS

    Master-uppsats, KTH/Rymdteknik

    Författare :Leonardo Ricci; [2021]
    Nyckelord :Solar sail; Solar radiation pressure; Attitude control; Escape trajectory; Centre of pressure; Disturbance Torques; Eclipse.; Solsegel; Solstrålningstryck; Attitydkontroll; Flyktbana; Tryckcentrum; Störningsmoment; Eclipse.;

    Sammanfattning : This thesis provides insights to what is peculiar about a solar sail attitude and orbit control system and provides the assessment, in the form of a feasibility study, of the effectiveness of sail tip vanes as a control hardware to escape the Earth sphere of influence. The demonstrator aims to prove the technology for the Sunshade project, a constellation of solar sails located at the Lagrangian point L1 to obscure part of the solar radiation directed towards earth. LÄS MER

  7. 5. The Aurora : What will space tourism look like in 2040?

    Master-uppsats, Umeå universitet/Designhögskolan vid Umeå universitet

    Författare :Tyler Macdonald; [2018]
    Nyckelord :Future Space Tourism Vehicle Design;

    Sammanfattning : What is Space Tourism? Space Tourism is when humans venture past 100km above the earth for recreational purposes. It could be for the view or just the thrill, either way space has captured our imaginations ever since we could look up and ask what is beyond our sky. What has happened in the past 10 years in the rocket industry has been amazing. LÄS MER