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in creator/contributor: "Wang, G. C."  
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Determination of miscibility pressure by direct observation method. Quarterly report, January 1-March 31, 1982

Description: The objective of the project is to conduct laboratory tests to: (1) develop a method for determining MMP through direct observation using a high pressure cell; (2) determine feasibility of in-situ foam generation by visual observation and microphotographic technique. The project is presently organized and carried out in three major fronts: (1) MMP test; (2) high pressure sampling and chemical analysis; and (3) foam study and displacement test. The technical progress in each of these areas is di… more
Date: January 1, 1982
Creator: Wang, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen-induced reconstruction of stepped W(001) surfaces studied with LEED and EELS

Description: Low energy electron diffraction patterns show that the W(001) surface reconstructs at room temperature when exposed to hydrogen with a (..sqrt..2x..sqrt..2)R45/sup 0/ structure having a c2mm symmetry. Vibrational EELS data indicate that the tungsten atoms move together to form dimers which must be aligned in <10> directions to satisfy the symmetry requirements. The two possible dimer orientations define two orthogonal, degenerate domains. It has been shown that steps on a surface may limit the … more
Date: November 1, 1984
Creator: Wendelken, J. F. & Wang, G. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Initial results of a positron tomograph for prostate imaging

Description: We present the status and initial images of a positrontomograph for prostate imaging that centers a patient between a pair ofexternal curved detector banks (ellipse: 45 cm minor, 70 cm major axis).The distance between detector banks adjusts to allow patient access andto position the detectors as closely as possible for maximum sensitivitywith patients of various sizes. Each bank is composed of two axial rowsof 20 CTI PET Systems HR+ block detectors for a total of 80 modules inthe camera. Compar… more
Date: November 29, 2004
Creator: Huber, J. S.; Choong, W. S.; Moses, W. W.; Qi, J.; Hu, J.; Wang, G. C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A retrospective on the LBNL PEM project

Description: We present a retrospective on the LBNL Positron EmissionMammography (PEM) project, looking back on our design and experiences.The LBNL PEM camera utilizes detector modules that are capable ofmeasuring depth of interaction (DOI) and places them into 4 detectorbanks in a rectangular geometry. In order to build this camera, we had todevelop the DOI detector module, LSO etching, Lumirror-epoxy reflectorfor the LSO array (to achieve optimal DOI), photodiode array, custom IC,rigid-flex readout board,… more
Date: November 15, 2004
Creator: Huber, J. S.; Moses, W. W.; Wang, G. C.; Derenzo, S. E.; Huesman, R. H.; Qi, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Surface magnetization in Ni(110) as studied by polarized-electron scattering

Description: A new technique, capable of observing the surface magnetization of ferromagnetic single crystals, is described. Illustrative data is presented, giving the dependence of the magnetization of the Ni(110) surface on applied field, incident energy, absorbate and coverage.
Date: January 1, 1980
Creator: Celotta, R. J.; Pierce, D. T.; Wang, G. C.; Bader, S. D. & Felcher, G. P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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