Search for dissertations about: "ramsey"

Showing result 1 - 5 of 12 swedish dissertations containing the word ramsey.

2. 1. On the estrablishment of effective condition monitoring parameters for copper corrosion problems in mineral oil-filled electrical transformers

   Author : Ramsey Jadim; Mirka Kans; Linnéuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; condition monitoring parameters; corrosion problems; sulfur deposits; corrosion reaction mechanisms; transformer failures; CBM.; Maskinteknik; Mechanical Engineering;

   Abstract : The power transformer is a critical equipment in which the protection process is essential for modern societies where continuous electric power supplies are required. Copper corrosion problems due to the formation of sulfur deposits on the copper windings of mineral oil-filled power transformers are considered a major issue that can lead to sudden failures, and in some cases, to costly fire and explosion accidents in the power plants. READ MORE

4. 2. On the establishment of effective condition-based maintenance for oil-filled electrical transformers to reduce failures due to copper corrosion problems and its role toward sustainable energy

   Author : Ramsey Jadim; Mirka Kans; Lina Bertling Tjernberg; Linnéuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CBM; CM procedures; corrosion problems; transformer oil analysis; corrosive sulfur; transformer failures; sustainable maintenance; sustainable energy supply; Maskinteknik; Mechanical Engineering;

   Abstract : Oil-filled electrical transformers are critical equipment for modern societies where a sustainable energy supply is required. Recently, many severe fire and explosion accidents of transformers have been reported due to copper corrosion problems in the form of copper sulfide deposits on the windings. READ MORE

5. 3. The normal and ACL deficient knee : an in vivo three dimensional kinematic and electromyographic analysis

   Author : Dan K Ramsey; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Knee; Tibia; Femur; Tibiofemoral contact points; Tibiofemoral kinematics; Anterior cruciate ligament; ACL injury; Knee brace; Knee instability; Bone pin; Magnetic resonance imaging; NM; Neuromuscular adaptation; Electromyography.;

   Abstract : The overall aim of this thesis was to describe the in-vivo 3D kinematics of the normal and ACL deficient knee. Baseline data from normal controls were compared against the pathological knee to assess whether generic functional knee braces reduced abnormal displacements. Moreover, 3D bony contact movements were derived from MRI data. READ MORE

6. 4. The Swedish Abortion Pill : Co-Producing Medical Abortion and Values, ca. 1965–1992

   Author : Morag Ramsey; Solveig Jülich; Francis Lee; Jean-Paul Gaudillière; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; Medical abortion; abortion pill; history of medicine; reproduction; reproductive technologies; feminist STS; History of Sciences and Ideas; Idé- och lärdomshistoria;

   Abstract : Abortion pills have had a large impact. Since their introduction to national markets in the 1990s, scholars have examined how abortion pills have changed medical practices, illegal abortion, and reproductive activism. What has gone unstudied, however, has been the development and the history of abortion pills. READ MORE

7. 5. Interface Engineering in Organic Electronics

   Author : Linda Lindell; William R. Salaneck; Mats Fahlman; Xavier Crispin; Michel de Jong; Michael G. Ramsey; Linköpings universitet; []
   Keywords : NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : Organic electronics is a field covering all applications and devices where one or several of the active components are made of organic material, such as organic light emitting diodes, organic solar cells, organic thin film transistors, organic magnets for spintronics etc. In all of the applications mentioned above, transport of charges across both inorganic/organic and organic/organic interfaces play a key role for device performance. READ MORE