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Browsing VTechWorks Administration by Issue Date
Now showing items 1-20 of 2148
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The design, construction, and operation of a centrifugal molecular still
(Virginia Tech, 1949-05-15)The three basic requirements for unobstructed, short path distillation are: a surface over which a think layer of distilland is distributed, a cooler condensing surface in close proximity to the evaporating surface, and ... -
The reaction of monochloromethyl ether with organometallic compounds
(Virginia Tech, 1953) -
Some studies of high moisture legume silage
(Virginia Tech, 1953-11-18)Silage is fermented forage plants. It is a succulent and nutritious feed, which can be used especially when green forage is not available. The methods by which it is made were first developed from a nineteenth century ... -
Differential diagnosis of nematode ova in cattle
(Virginia Polytechnic Institute, 1958) -
Postemergence growth of the ovarian follicles of Aedes aegypti
(1977)Growth of the ultimate follicle to the resting stage in Aedes aegypti is linear and reaches maximum development about 6Ohr after emergence. Decapitations and ligations at various times after emergence indicate that growth ... -
Genetics, behavior, and disease resistance in chickens
(Virginia Tech, 1978) -
Economically optimum design of cusum charts when there is a multiplicity of assignable causes
(Virginia Tech, 1978-10-05)This study is concerned with the design of cumulative sum charts based on a minimum cost criterion when there are multiple assignable causes occurring randomly, but with known effect. A cost model is developed that relates ... -
Effects of field applications of paraquat on densities of Panonychus ulmi (Koch) and Neoseiulus fallacis (Garman)
(1986)Neoseiulus fallacis (Garman) is the most important acarine predator of the European red mite, Panonychus ulmi (Koch), in sprayed apple orchards in the eastern United States [Poe, S. L., and W. R. Enns. 1969. ... -
Apple fruit nonstructural carbohydrates and abscission as influenced by shade and terbacil
(Virginia Polytechnic Institute and State University, 1986)The theory that fruit abscission may be the result of a reduction in metabolites available to the young fruit was addressed by this study. Shade cloth or terbacil, a photosynthetic inhibitor, were applied to limbs and whole ... -
An Appalachian portrait: black and white in Montgomery County, Virginia, before the Civil War
(Virginia Tech, 1987-05-15)Montgomery County, Virginia, is a southern Appalachian county founded in 1776. Throughout the county's antebellum history, as with most other regions of the South, four major population groups were visibly present. ...
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Intellectuals, literature, and publishing houses in Iran: 1960-1990
(1990)This paper contends that the politics of interpretation in any society cannot be comprehended in its entirety unless the questions of agency and medium are analyzed. Looking in particular at the role of publishing houses ... -
Learning how to learn about the supervision of student teachers
(Virginia Tech, 1990-03-04)Recent calls for reform in teacher education have included improving the clinical experience of preservice teachers (Boyer, 1983; The Holmes Group, 1986). Research on student teaching indicates that the role of the cooperating ...
