Sökning: "oxygen sensor uppsala"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden oxygen sensor uppsala.

1. 1. Reactive Sputter Deposition of Functional Thin Films

   Författare :Lina Liljeholm; Jörgen Olsson; Ilia Katardjiev; Tomas Nyberg; Gonzalo Fuentes Iriarte; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thin film; reactive sputtering; coating; resonator; sensor; FBAR; SMR; aluminum nitride; Al; B N; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics;

   Sammanfattning : Thin film technology is of great significance for a variety of products, such as electronics, anti-reflective or hard coatings, sensors, solar cells, etc. This thesis concerns the synthesis of thin functional films, reactive magnetron sputter deposition process as such and the physical and functional characterization of the thin films synthesized. LÄS MER

3. 2. Extending Microsystems to Very High Temperatures and Chemically Harsh Environments

   Författare :Zahra Khaji; Lena Klintberg; Klas Hjort; Greger Thornell; Frank Niklaus; Uppsala universitet; []
   Nyckelord :HTCC; MEMS; MST; Microcombustor; Microthruster; Single-use valve; Wireless pressure sensor; flow sensor; in-situ electroplating; Monopropellant; Platinum; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

   Sammanfattning : Aiming at applications in space exploration as well as for monitoring natural hazards, this thesis focuses on understanding and overcoming the challenges of extending the applicability of microsystems to temperatures above 600°C as well as chemically harsh environments. Alumina and zirconia high-temperature co-fired ceramics (HTCC) with platinum as the conductor material, have in this thesis, been used to manufacture a wide range of high-temperature tolerant miniaturized sensors and actuators, including pressure and flow sensors, valves, a combustor, and liquid monopropellant microthrusters. LÄS MER

4. 3. Chemical Vapour Deposition of Undoped and Oxygen Doped Copper (I) Nitride

   Författare :Anna Fallberg; Jan-Otto Carlsson; Mikael Ottosson; Kwang-Leong Choy; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical vapour deposition; copper hexafluoroacetylacetonate; copper I nitride; copper I oxide; multilayers; oxygen doping; Organic chemistry; Organisk kemi; Inorganic Chemistry; oorganisk kemi;

   Sammanfattning : In science and technology there is a steadily increased demand of new materials and new materials production processes since they create new application areas as well as improved production technology and economy. This thesis includes development and studies of a chemical vapour deposition (CVD) process for growth of thin films of the metastable material copper nitride, Cu3N, which is a semiconductor and decomposes at around 300 oC. LÄS MER

5. 4. Sensor Fault Detection and Process Monitoring in Water Resource Recovery Facilities

   Författare :Oscar Samuelsson; Bengt Carlsson; Elling W. Jacobsen; Uppsala universitet; []
   Nyckelord :Aeration efficiency; anomaly detection; ammonium feedback control; change detection; covariance matrix; diffuser fouling; experimental design; Gaussian process regression; novelty detection; wastewater treatment;

   Sammanfattning : Water resource recovery facilities (WRRFs) operate 24/7 to reduce the environmental impact from wastewater on receiving waters. Inaccurate measurements hinder the improvement of operations, limits the performance of automatic control, and deteriorate data quality for decision support and other purposes. LÄS MER

7. 5. Spinal cord ischemia : An experimental study of the spinal cord blood supply and peroperative ischemia detection by a new method of intrathecal monitoring

   Författare :Lennart Christiansson; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; Spinal cord ischemia; Oxygen tension; Intrathecal monitoring; Ultrastructure; Aortic cross-clamping; Thoracoabdominal aneurysm; Kirurgi; Surgery; Kirurgi; anestesiologi; Anaesthesiology;

   Sammanfattning : Spinal cord ischemia associated with thoracoabdominal aortic surgery may lead to devastating neurological complications. Improvement in bypass techniques and various adjunctive measures has reduced its incidence, but still 5-10 % of the patients develop postoperative paraplegia. LÄS MER