Sökning: "Per w"

Visar resultat 16 - 20 av 105 avhandlingar innehållade orden Per w.

1. 16. Microstructure of Cermets

   Författare :Per Lindahl; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; thermodynamic; microchemistry; N ; AP-FIM; Ti C; cutting tools; SEM; cemented carbide; TEM; sintering;

   Sammanfattning : The microstructure of several TiC-TiN-Mo2C-WC-Co/Ni model alloys and a commercial (Ti,Ta,W,Mo)(C,N)-(Co,Ni) type cermet was studied using x-ray diffraction, optical microscopy, scanning electron microscopy, analytical electron microscopy and atom probe field ion microscopy. In addition thermodynamical calculations were made in order to understand the development of the microstructure during sintering. LÄS MER

3. 17. First Determination of the Electric Charge of the Top Quark and Studies of the Top Quark Pair Background to New Physics

   Författare :Per Hansson; Bengt Lund-Jensen; Jorgen D'Hondt; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; experimental particle physics; particle physics; standard model tests; dzero; fermilab; tevatron; top quark; top physics; electric charge; atlas; cern; lhc; large hadron collider; supersymmetry; Elementary particle physics; Elementarpartikelfysik; Physics; Fysik;

   Sammanfattning : This thesis is concerned with experimental investigations of properties of the top quark and processes involving this particle. In the first part of the thesis, the first determination of the electric charge of the top quark is presented. LÄS MER

4. 18. Organofluorine Mass Balance and Per- and Polyfluoroalkyl Substance Analysis of Environmental Samples and Human Blood

   Författare :Rudolf Aro; Leo W. Y. Yeung; Anna Kärrman; Ulrika Eriksson; Christopher Higgins; Örebro universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organofluorine mass balance; PFAS; extractable organofluorine; unidentified organofluorine; whole blood; surface water; effluent; sludge;

   Sammanfattning : Per- and polyfluoroalkyl substances (PFAS) have been linked to a range of negative health and environmental effects. Regulations limiting and/or banning the use of some of the legacy compounds have been introduced. Consequently, the production and use of PFAS has diversified. LÄS MER

5. 19. Compact Soft X-Ray Microscopy : Sources, Optics and Instrumentation

   Författare :Per Takman; Hans Hertz; Janos Kirz; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; soft x-ray microscopy; water window; compact; laser plasma; liquid jet; zone plate optics; Physics; Fysik;

   Sammanfattning : This thesis describes the development of a sub-60-nm full-period resolution compact soft x-ray microscope operating in the water-window region (2.3-4.4 nm). Soft x-ray water-window microscopy is a powerful technique for high-resolution imaging of organic materials exploiting the natural contrast mechanism between carbon and oxygen, cf. LÄS MER

7. 20. Hemicallotasis in Tibial Osteotomy using External Fixation. Patients, Pin Site Infection and Pin Site Care

   Författare :Annette W-Dahl; Lund Ortopedi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ortopedi; traumatologi; Kirurgi; Surgery; knee osteoarthritis; pin site infection; hemicallotasis; External fixation; tibial osteotomy; traumatology; orthopaedics; pin site care;

   Sammanfattning : External fixation has been more commonly used during the last decades for correction of bone and soft tissue deformities and in frcture healing. The most common complication of external fixation is pin site infection. LÄS MER