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VTETD 檢索結果共 19439 筆,本頁資料從第 241 筆到第 252 筆

Effects of exogenously applied GA4+7 on floral and vegetative development of Streptocarpus x hybridus were investigated. S. x hybridus 'Hybrid Delta' petiolode tissue from plants treated with 25 μg GA4+7 were examined by scanning electron microscopy. Plants treated at 1 cm leaf lengths appeared unaffected by GA4+7 one....


By Andrea Reiser Orvos-Horticulture-VT-masters-2013-02-07
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The initial part of this investigation was to determine the ternary isothermal sections for the Cr-Co-Cu system and the CrâMm-Cu system at lOOO°C. and 975°C., respectively. This was done by vacuum melting the Cr-Co~Cu alloys and annealing these alloys in an inert atmosphere of a helium-hydrogen gas mixture. The Cr-Mn-Cu alloys were melted under a helium atmosp....


By Wentzle R. DeBoskey-Metallurgical Engineering-VT-masters-2013-02-07
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Constant stress creep tests were performed in vacuo on alpha titanium in various thermomechanical treatments.

At 500°C and 527°C annealed alpha titanium exhibits an anomalous creep arrest in the initial portion of the creep curve. After this creep arrest the creep curves swept up to a true steady state creep rate. This anomalous behavior is attributed t....


By Bruce R. Somers-Materials Engineering-VT-masters-2013-02-07
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Mule deer (Odocoileus hemionus) population dynamics, movements, and habitat use were studied on the Pinon Canyon Maneuver Site in southeastern Colorado during January 1983- December 1984. Thirty-eight adults and 28 fawns were radio collared, and 35 adults were color collared or ear tagged. Population estimates were 365 and 370 deer for 1983 and 1984, respectiv....


By Thomas P. Gerlach-Fisheries and Wildlife Sciences-VT-masters-2013-02-07
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The purpose of this study was to explore the effects of clothing conformity on the social interaction of two groups of preschool children of two socio-economic classes. Subjects were six randomly selected children from a group of fifteen nursery school children, representing the middle economic class and six children from a group of thirteen Head Start children desig....


By Marilyn Sanderson Spencer-Management, Housing, and Family Development-VT-masters-2013-02-07
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Urbanity ls the use of the in-between spaces; use of every available lot, every square inch of space.

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By Miriana I. Doneva-Architecture-VT-masters-2013-02-07
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Placer gold is frequently reported to assay at overall higher values of tineness than the gold in the rock from which it was liberated. A related phenomenon is the historical discovery of many extremely large gold nuggets (up to 28 lbs) in the southeastern United States that have no apparent source rock. Placer gold grains from the southeastem United States have been....


By John Corwyn Groen-Geology-VT-masters-2013-02-07
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Triaxial tests under high loading rates and different confining pressures simulate the multi-pass effect of a tractor wheel loading on the soil. A volume measuring technique was developed to be used in triaxial tests conducted under high loading rates.

A sandy clay agricultural soil was tested under predetermined conditions using an INSTRON loading frame, a di....


By Vasilis Parathiras-Mechanical Engineering-VT-masters-2013-02-07
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Strategies for generalizing raster-based land cover data were investigated. Generalization strategies were studied as part of the U.S. Geological Survey's (USGS) Federal Land Information System (FLIS). Area filtering, category aggregation, resampling, and modal search and replace comprised the strategies tested on USGS Alaska Interim Land Cover data.

Generali....


By Margaret Grace Mayers-Geography-VT-masters-2013-02-07
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The purpose of this study was to assess adrenergic control of splenic hemodynamic function and oxygen metabolism in neonatal pigs (NP). Seventeen piglets, 28-45 days of age, were anesthetized with pentobarbitol (30 mg/kg, i.p.) and prepared for measurement of splenic venous outflow. Simultaneous arterial and venous blood samples were analyzed for O2 content and hematocr....

By Joan Marie Baruffaldi-Veterinary Medical Sciences-VT-masters-2013-02-07
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The purposes of this study were to determine as a function of temperature the thermal diffusivity and/or thermal conductivity of SiC-Mullite and SiC-SiC, and to explain the observed behavior in terms of changes in temperature, microstructure, composition, and/or orientation.

Materials used in the SiC-Mullite study consisted of single crystal SiC whiskers (pre....


By Laura M. Russell-Materials Engineering-VT-masters-2013-02-07
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Expert system technology has produced systems that perform heuristic classification. These systems solve problems of a type determined by the knowledge engineer and the expert at system design time. A "true consultant" on the contrary, applies domain knowledge to solve a problem not previously seen. For example, a graphic design consultant must accept the statement o....


By Thomas Aaron Shulok-Computer Science and Applications-VT-masters-2013-02-07
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