Search for dissertations about: "Gas dilution"

Showing result 21 - 25 of 63 swedish dissertations containing the words Gas dilution.

  2. 21. On the possible use of oxysterols for the diagnosis and evaluation of patients with neurological and neurodegenerative diseases

    Author : Valerio Leoni; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Multiple sclerosis; Alzheimer s disease; oxysterol; central nervous system; gas chromatography-mass spectrometry; blood brain barrier; cholesterol;

    Abstract : Oxysterols are monooxygenated derivatives of cholesterol with a unique ability to pass lipophilic membranes and are involved in a number of elimination pathways for cholesterol. One of the major oxysterols in the circulation, 24S-hydroxycholesterol, is formed exclusively in the brain, mainly in neuronal cells. READ MORE

  4. 22. Haemodynamic and ventilatory effects of laparoscopic surgery

    Author : Lena Andersson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Laparoscopy; C02 pneumoperitoneum; indicator- dilution technique; central haemodynamics; cardiac output; central blood volume; venous occlusion plethysmography; catecholamines; multiple inert gas technique; shunt; abdominal wall lift; intrathoracic pressure; ventilation-perfusion matching; atelectasis; spiral computed tomography.;

    Abstract : Background: It has been shown repeatedly that the establishment of pneumoperitoneum (PP) is associated with increased cardiac filling pressures, as well as increased blood pressure and systemic vascular resistance. Patients without heart or lung disease can compensate for these effects of PP, but cardiopulmonary compromised patients may develop cardiac failure during PP. READ MORE

  5. 23. Characterization of particulate matter from atmospheric fluidized bed biomass gasifiers

    Author : Eva Gustafsson; Michael Strand; Marcus Öhman; Linnéuniversitetet; []
    Keywords : biomass gasification; fluidized bed; particulate matter; particle morphology; particle elementary composition; Bioenergiteknik Energi- och Miljöteknik; Bioenergy Technology;

    Abstract : Through biomass gasification, biomass can be converted at high temperature to a product gas rich in carbon monoxide, hydrogen, and methane. After cleaning and upgrading, the product gas can be converted to biofuels such as hydrogen; methanol; dimethyl ether; and synthetic diesel, gasoline, and natural gas. READ MORE

  6. 24. High Performance Breath Analysis

    Author : Jonas Ljungblad; Mia Folke; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; elektronik; Electronics;

    Abstract : Alcohol breath testing on a larger scale will save lives. Alcohol abuse is a major contributor to death and disease. Alcohol intake affects the human body by significantly longer response time to external stimuli. In situations where the senses need to be on alert this delay can be the difference between life and death. READ MORE

  7. 25. The process atmosphere as a parameter in the Laser-Powder Bed Fusion process

    Author : Camille Nicole Géraldine Pauzon; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process stability; 316L stainless steel; Ti-6Al-4V; Laser-Powder Bed Fusion; processing atmosphere; process control; powder degradation; Additive Manufacturing;

    Abstract : Laser-Powder Bed Fusion (L-PBF) is an Additive Manufacturing (AM) technique that allows to produce near-net shape components of complex design. Applied to metallic materials, L-PBF allows to consolidate subsequent layers of powder using the heat from laser radiation. READ MORE