Sökning: "activity coefficient"

Visar resultat 1 - 5 av 48 uppsatser innehållade orden activity coefficient.

  1. 1. Sambandet mellan psykisk hälsa och fysisk aktivitet hos studenter vid Luleå Tekniska Universitet

    Uppsats för yrkesexamina på grundnivå, Luleå tekniska universitet/Institutionen för hälsa, lärande och teknik

    Författare :Phaisarn Gustafsson; Karl Brinkeback; [2023]
    Nyckelord :IPAQ-SF; Mental health; PHQ-9; Physical activity; Student; Fysisk aktivitet; IPAQ-SF; PHQ-9; Student; Psykisk hälsa;

    Sammanfattning : Bakgrund: Psykisk ohälsa är ett brett spektrum av olika diagnoser och studier visar på att den åldersgrupp som är hårdast drabbad är 16-29 åringar, inte minst studenter. Tidigare forskning visar också att det finns ett samband mellan fysisk aktivitet och psykisk hälsa, men även att kvinnor engagerar sig mindre i fysiska aktiviteter jämfört med män. LÄS MER

  3. 2. Investigation of the impact of different sugar compositions on the moisture absorption of hard candy when exposed to a humid environment

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Gila van den Eijnde; [2023]
    Nyckelord :Hard candy; Sugar composition; Hygroscopicity; Moisture absorption; Shelf life; Product stability; Food technology; Technology and Engineering;

    Sammanfattning : Hard candy is hygroscopic, implying that hard candy readily absorbs moisture from the environment, resulting in adverse changes in the texture and appearance of the candy. This thesis investigates the impact of different sugar compositions on the moisture absorption of hard candy when exposed to a humid environment. LÄS MER

  4. 3. Feasibility of quantitative 99mTc-DPD scintigraphy SPECT/CT for assessing the burden of ATTR cardiac amyloidosis

    Master-uppsats, Umeå universitet/Radiofysik

    Författare :Sajad Kadhim Khalaf; [2023]
    Nyckelord :QSPECT; Amyloidosis; ATTR; LVMI; Recovery Coefficient; SUV; Calibration;

    Sammanfattning : Background: Amyloid transthyretin (ATTR) cardiomyopathy is caused by the deposition of misfolded proteins, known as amyloid fibrils, in the myocardium. Quantitative Single Photon Emission Computed Tomography (QSPECT) utilizing 99mTc-DPD scintigraphy has the potential to assess ATTR-suspected cardiac amyloidosis (CA). LÄS MER

  5. 4. Uptake and retainment of radionuclides in edible mushrooms – from fruiting to cooking

    Master-uppsats,

    Författare :Delshad Mansour Ayoubi; [2022-12-06]
    Nyckelord :Medical physics; Activity concentration; Transfer coefficient; Dose;

    Sammanfattning : Purpose: The purpose of this study was to study the uptake, distribution and transfer of Mn-54, Zn-65, U-238, U-235, U-234, and Po-210 in mushrooms and their respective caps and stalks, the effects of chelates and ligands, and the potential release of radionuclides during a cooking procedure. Introduction: Fungi are organisms that are composed of a fruiting body (mushroom) and tubular hyphae, that branches out into complex networks called mycelium. LÄS MER

  7. 5. ESTIMATION OF RADIATION EXPOSURE FROM NATURALLY OCCURRING RADIONUCLIDES IN FOOD AND FOODSTUFF

    Master-uppsats,

    Författare :Ida Bengtsson; [2022-01-13]
    Nyckelord :Medical physics; Naturally occurring radionuclides; committed effective dose from ingested radionuclides; Biokinetic models;

    Sammanfattning : Purpose: The main purpose of this study was to provide an estimation of the committed effective dose received by the Swedish population from naturally occurring radionuclides (NORM) in the diet. This study was also aiming to investigate the impact on the committed effective dose due to the new developments in the biokinetic model for Po 210 . LÄS MER