Now showing items 11-20 of 358
A comparison of self-help lower-income housing in community-based and individualistic settlements in urban Mexico
(Virginia Tech, 1992-04-05)
This study compares housing in two lower-income self help settlement types -- community-based and individualistic -- in two contemporary Mexican urban settings: Mexico City and Tlalnepantla. The research investigates ...
A theory for the time dependent yielding and creep of clay
(Virginia Tech, 1992)
The purpose of this study was to develop a theory for clay deformation that models the behavior represented by Bjerrum' s time lines (Bjerrum (1961). The theory models time-dependent compression (secondary compression) ...
Cold model of a vibrated-bed microreactor capable of varying Peclet number at fixed weight hourly space velocity providing a tool for simulating an important feature of the reaction kinetic scene in large catalytic fluid beds
(Virginia Tech, 1992-03-04)
A cold-flow model of a vibrated-bed microreactor has been designed and tested with capability for varying the level of gas dispersion (characterized by axial Peclet number) at a fixed weight hourly space velocity (WHSV). ...
Surface characterization of plasma treated carbon fibers and adhesion to polyethersulfone
(Virginia Tech, 1992-08-05)
A series of RF plasmas was chosen to modify the surface chemical composition of Hercules IM7 carbon fibers. A two-liquid tensiometric method was used to determine the surface energy parameters y(ds) and I(psf) of the fibers. ...
Purification and characterization of glutathione reductase isozymes specific for the state of cold hardiness of red spruce (Picea rubens sarg.)
(Virginia Tech, 1992-09-05)
Isozymes of glutathione reductase (GR) have been purified from red spruce. A major isozyme is present throughout the year, while one isozyme is present only during summer in non-hardened needles. A third isozyme is present ...
Isolation, reconstitution, and molecular cloning of the manganese-containing superoxide dismutase from Deinococcus radiodurans
(Virginia Tech, 1992-03-10)
The superoxide dismutase from a radiation-resistant bacterium Deinococcus radiodurans has been purified to electrophoretic homogeneity. The superoxide dismutase has a specific activity of 3300 units/mg and an apparent ...
Prediction of medical technologists' scores on the MT (ASCP) certification examinations
(Virginia Tech, 1992)
Forces in the initiation and implementation of the rural groundwater protection process
(Virginia Tech, 1992-05-28)
Groundwater contamination is a growing problem that is receiving increasing attention on the national scene. There is recognition that federal, state, and local, programs for the protection of the nation's groundwater lack ...
Stress and reliability analysis of multilayered composite cylinder under thermal and mechanical loads
(Virginia Polytechnic Institute and State University, 1992)