Zobrazeno 1 - 10
of 25
pro vyhledávání: '"B F, Lewis"'
Publikováno v:
Public health reports (Washington, D.C. : 1974). 109(2)
The outcomes of counseling and testing programs related to human immunodeficiency virus (HIV) infection and risk of infection among injection drug users (IDUs) are not well known or understood. A counseling and testing outcome of potential public hea
Autor:
B F, Lewis, R, Ross
Publikováno v:
NIDA research monograph. 144
Publikováno v:
NIDA research monograph. 127
Publikováno v:
AIDS education and prevention : official publication of the International Society for AIDS Education. 4(2)
Time trends in needle sharing and bleach use were examined among needle users enrolled at drug abuse treatment and nontreatment sites in greater Worcester, MA, from 1987 through 1989. Substantial declines in high-risk behavior were found, with differ
Autor:
C G, Tribble, J A, Kern, L J, Findley, T M, Daniel, J D, Truwit, C E, Rose, B F, Lewis, I L, Kron
Publikováno v:
Virginia medical quarterly : VMQ. 118(3)
Lung transplantation is now established as a clinical reality for patients with irreversible, lethal pulmonary conditions. We report the first successful application of this treatment modality in Virginia.
Publikováno v:
Surface Science. 174:606-614
We report some results of cross-sectional transmission electron microscope (XTEM) studies on GaAs/InAs multiple quantum wells and superlattices grown under a variety of unusual growth conditions via molecular beam epitaxy. These growth conditions cov
Publikováno v:
Journal of Applied Physics. 54:1365-1368
InSb has been used as a substrate for molecular beam epitaxy. For good epitaxial growth, a substrate surface which is smooth and clean on an atomic scale is required. Chemical cleaning procedures provide an oxide film to passivate the surface. This f
Publikováno v:
IEEE Transactions on Nuclear Science. 27:1640-1646
The interfacial structures of radiation hard and soft oxides grown by both dry and wet processes on silicon substrates are examined using high resolution x-ray photoelectron spectroscopy (XPS). Substantial differences are observed in the relative con
Local atomic and electronic structure of oxide/GaAs and SiO2/Si interfaces using high‐resolution XPS
Autor:
Anupam Madhukar, B. F. Lewis, R. P. Vasquez, P. J. Grunthaner, Frank J. Grunthaner, J. Maserjian
Publikováno v:
Journal of Vacuum Science and Technology. 16:1443-1453
The chemical structures of thin SiO2 films, thin native oxides of GaAs (20-30 A), and the respective oxide-semiconductor interfaces, have been investigated using high-resolution X-ray photoelectron spectroscopy. Depth profiles of these structures hav
Publikováno v:
Journal of Vacuum Science and Technology. 20:747-750
Device‐quality gate oxides (∠850 A) and thin thermal SiO2 (∠80 A) films grown on Si 〈100〉 substrates are irradiated with 0–20 eV electrons during in situ XPS measurements. The gate‐oxide structures have been thinned to 25–60 A using a