Sökning: "Strip"

Visar resultat 26 - 30 av 141 avhandlingar innehållade ordet Strip.

1. 26. Single-Photon Events in the DELPHI Experiment

   Författare :Elisabeth Falk; Partikel- och kärnfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; kvantfältteori; Elementarpartikelfysik; quantum field theory; DELPHI; STIC; LEP; single-photon events; PS; off-energy electrons; silicon-strip detector; coherent noise; emittance; Elementary particle physics; fast wire scanner; High energy interactions; cosmic rays; Kosmisk strålning; högenergi; Fysicumarkivet A:1998:Falk Harris;

   Sammanfattning : A series of studies pertaining to the STIC calorimeter at the DELPHI experiment at LEP is presented, and a new generation of fast wire scanners for emittance measurements at PS is described. The STIC studies are centered around a single-photon analysis, in which the reaction e+ e- -> gamma + invisible particles was studied at center-of-mass energies of 161, 172 and 183 GeV. LÄS MER

3. 27. Load-Carrying Capacity of Steel Girders and Panels with Thin-Walled Trapezoidally Corrugated Webs

   Författare :Ruoshan Luo; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; steel; finite element; thin-walled structures; girder; post-buckling; panel; trapezoidal corrugation; load-carrying capacity; optimal design; plasticity; spline finite strip; buckling; large deflection;

   Sammanfattning : This thesis concerns the load-carrying capacity of steel girders and panels with thin-walled trapezoidally corrugated webs. Computer-based numerical methods are used as a tool and emphasis is placed on various parametric studies, covering geometric parameters, initial imperfections, material strain-hardening models, loading types and loading positions, and so forth. LÄS MER

4. 28. Characterization and Energy Calibration of a Silicon-Strip Detector for Photon-Counting Spectral Computed Tomography

   Författare :Xuejin Liu; Mats Danielsson; Sarah E Bohndiek; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Medical Technology; Medicinsk teknologi;

   Sammanfattning : Multibin photon-counting x-ray detectors are promising candidates to be applied in next generation computed tomography (CT), whereby energy information from a broad x-ray spectrum can be extracted and properly used for improving image quality and correspondingly reducing radiation dose. A silicon-strip detector has been developed for spectral CT, which operates in photon-counting mode and allows pulse-height discrimination with 8 adjustable energy bins. LÄS MER

5. 29. Preclinical Molecular Imaging using Multi-Isotope Digital Autoradiography - Techniques and Applications

   Författare :Anders Örbom; Lund Medicinsk strålningsfysik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Autoradiography; Radioimmunotherapy; Antibodies; Molecular Imaging; Multi-Radionuclide Imaging; Silicon-strip detector;

   Sammanfattning : Molecular imaging, both in vivo and ex vivo, is playing an increasingly important role in preclinical medical research. When using radionuclide-labeled tracers, e.g. in the development of radiopharmaceuticals for diagnostic imaging or for radionuclide therapy, quantitative in vivo imaging can be performed using emission tomography. LÄS MER

7. 30. Numerical Investigation of Some Heat Transfer Topics with Relevance to Gas Turbines

   Författare :Arash Saidi; Värmeöverföring; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vakuumteknik; Maskinteknik; vacuum technology; vibration and acoustic engineering; hydraulics; Mechanical engineering; plasma; fluiddynamik; Gaser; Ribbed ducts; intercoolers; EASM; EVM; gas turbine; CFD; heat exchangers; extended surfaces; offset strip fin; heat transfer enhancement; Thermal engineering; applied thermodynamics; Termisk teknik; hydraulik; termodynamik; Gases; plasmas; fluid dynamics; vibrationer; akustik;

   Sammanfattning : The first part of the investigation is related to the heat transfer and fluid flow problem inside ribbed ducts with a square cross section. The typical applications of this problem are in the cooling of gas turbine blades and guiding vanes. The second part is related to application of intercoolers in gas turbine systems. LÄS MER