• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1035
  • 807
  • 259
  • 107
  • 81
  • 68
  • 25
  • 24
  • 17
  • 13
  • 12
  • 9
  • 9
  • 9
  • 9
  • Tagged with
  • 2852
  • 458
  • 358
  • 328
  • 319
  • 233
  • 166
  • 162
  • 153
  • 145
  • 134
  • 126
  • 125
  • 124
  • 120
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

The design of the University of Michigan subcritical nuclear reactor assembly a dissertation submitted in partial fulfillment ... for the degree of Master of Science in Engineering ... /

Gyorey, Geza Leslie. Young, Po-shien. January 1957 (has links)
Thesis (M.S.)--University of Michigan, 1957. / Included in back pocket: Physics analysis of the subcritical reactor Model 9000/ by Poh-shien Young.
202

A preliminary investigation on 3 Mev. Van de Graaff photoneutron spectra thesis : for the partial fulfillment of the degree of Master of Science in the Institute of Nuclear Science, Tsing Hua University ... /

Ma, Pu-Yuan. Pai, Hsiang-Lin. Wang, Shin-Chen. Lee, Wellington S. Chien, Ji-Peng. January 1960 (has links)
Thesis (M.S.)--Tsing Hua University, 1960. / Research done at the University of Michigan.
203

Characterization of the neutron flux spectrum at the Missouri University of Science and Technology Research Reactor

Kulage, Zachary Andrew. January 2010 (has links) (PDF)
Thesis (M.S.)--Missouri University of Science and Technology, 2010. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed April 7, 2010) Includes bibliographical references (p. 41-42).
204

Quasi-Lagrangian eddy statistics from ghost balloon trajectories at 200mb over the southern hemisphere

Christensen, Roger Ervin. January 1971 (has links)
Thesis (M.S.)--University of Wisconsin, 1971. / Bound typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
205

Exploratory synthesis in molten salts characterization, nonlinear optical and phase-change properties of new chalcophosphate compounds /

Chung, In. January 2008 (has links)
Thesis (Ph. D.)--Michigan State University. Dept. of Chemistry, 2008. / Title from PDF t.p. (viewed Sept. 10, 2009). Includes bibliographical references. Also issued in print.
206

Effect of mould flux on scale adhesion to reheated stainless steel slabs

Ndiabintu, Mukadi Jean-Jacques. January 2008 (has links)
Thesis (M.Applied Science(Metallurgical Engineering))--University of Pretoria, 2008. / Abstract in English. Includes bibliographical references.
207

Experimental testing of convective spray cooling with the aid of an electrical field using the Coulomb force

Kreitzer, Paul Joseph. January 1900 (has links)
Thesis (M.S.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains xv, 183 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 133-134).
208

Neutronics analysis of a modified Pebble Bed Advanced High Temperature Reactor

Abejón Orzáez, Jorge, January 2009 (has links)
Thesis (M.S.)--Ohio State University, 2009. / Title from first page of PDF file. Includes vita. Includes bibliographical references (p. 133-134).
209

Quantification et caractérisation des écoulements sanguins dans l'arborescence vasculaire de la région cervico-faciale par Imagerie par Résonance Magnétique de flux : évaluation et application / Quantification and characterization of the blood flow of the vascular tree in facial area by flow Magnetic resonance Imaging : evaluation and application

Pagé, Gwenaël 15 December 2016 (has links)
L'imagerie par résonance magnétique cinétique en contraste de phase (IRM-PC) sensible aux flux permet la quantification et la caractérisation des écoulements sanguins in-vivo de manière non-invasive. En clinique, cette séquence est principalement appliquée en une coupe à deux dimensions (2D), mais elle a évolué vers une acquisition volumique des vitesses (4D IRM-PC) offrant une quantification complète de l'écoulement dans l'ensemble d'une arborescence vasculaire. Cependant, cette technique nécessite d'outils de post-traitement qui sont encore peu nombreux et d'une évaluation de la précision de la mesure des vitesses en 2D et 4D dans des vaisseaux de petits diamètres. Dans ce travail de thèse, un logiciel de post-traitement des images 2D et 4D IRM-PC a été mis au point avec une interface facile et est utilisé par des équipes de recherches et des cliniciens. Des protocoles d'acquisitions des vitesses par IRM pour des vaisseaux constitués de diamètres millimétriques ont été développés. Ces protocoles ont été validés in-vitro à partir d'un travail réalisé sur fantôme qui montre une erreur inférieure à 10% dans la précision des mesures. Les protocoles validés ont été appliqués sur les artères de la région cervico-faciale chez 30 volontaires sains afin de constituer la première base hémodynamique des vaisseaux de cette région. Des patients atteints de pathologies cervico-faciale ont bénéficié de ce protocole et son intérêt a été montré dans le suivi du patient et pour la planification chirurgicale / Phase-Contrast Magnetic Resonance imaging (PC-MRI) is a non-invasive technique used for quantification and characterization of the blood flow. In clinical pratice, this sequence is principally used in a two-dimensional single slice (2D), but it evolved to a velocity volumic acquisition (4D PC-MRI) allowing a complete quantification of the flow through a vascular tree. However, this technique requires post-processing software which are few and an evaluation of the velocity accuracy in 2D and 4D to quantify vessels with millimetric diameter. In this thesis work, a user-friendly post-processing software of 2D and 4D MRI images has been developed and it is used by research teams and clinicians. MRI acquisitions protocols of velocities for vessels composed by millimetric has been created. These protocols developed in-vitro form a phantom work show an error in the measurement accuracy less than 10%. These validated protocols are applied in facial area arteries in 30 healthy volunteers to create the first hemodynamic data base of arteries in this area. Then, the protocols have been performed to patients with pathologies affecting the facial area to show is interest on patient follow-up and surgical treatment
210

STUDIES IN COMPACT EM GENERATORS FOR FUZE APPLICATIONS

Hooks, Clayton A. 01 December 2013 (has links)
For artillery and medium caliber munitions utilizing electronic fuze assemblies, numerous methods exist for collection or generation of the electrical energy required to power the fuze during flight. One general method of harvesting energy from the launch event is to employ the inertia of a movable generator component to effect a change in an electrically-coupled magnetic circuit. This paper describes methods of parameter selection and model-based design for the development of a switched-flux linear electric generator (LEG) of desired characteristics. Specifically, the tasks entailed development of a dynamic model for system-level simulation and the estimation of device flux and inductance profiles from finite element models for selected material characteristics. Single-magnet and dual-magnet designs, respectively capable of unipolar or bipolar flux operation were investigated. An experimental variant of the final dual-magnet LEG design was fabricated and analyzed. Recommendations for future design tasks are discussed. Also included is a brief overview of an inertial generator concept based on the angular acceleration of a magnetic rotor. A simple example of such a transverse-flux alternator is included and analyzed with discussion of the challenges facing further design.

Page generated in 0.0355 seconds