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Now showing items 741-750 of 791
Bubble nucleation and growth dynamics in polymer melts
(1992)
The present work is concerned with identifying the important parameters in bubble nucleation and growth and determining their effects on foam structures obtained by free expansion foaming. This work involves extending ...
Shape conceptualization in design
(1992)
The intention of this research is to provide a conceptual basis for the design and construction of a geometric modeling system that dovetails with the way designer plan and visualize objects. This dissertation focuses on ...
Heterosis, combining ability, and breeding potential studies for grain yield and yield components in guinea sorghums [Sorghum bicolor (L.) Moench
(1992)
Relatively low yields of guinea sorghums have been a major obstacle for sustained progress in yield improvement of the race in West Africa. In an attempt to determine why West African sorghums display low yield potential, ...
In-situ steam generation using electrical resistance heating
(1992)
This work presents a new application of Electrical Resistance Heating (ERH), in-situ steam generation (ISSG). ISSG uses ERH to generate steam in-situ for steam flooding. The heat generated by ERH comes from the flow of low ...
Electronic structure and reaction mechanism of transition metal complexes : bond-stretch isomerism, methane activation on transient cyclopentadienylcarbonylrhodium, and ligand substitutions on metal nitrosyl carbonyl complexes
(1992)
Ab initio molecular orbital techniques are utilized to investigate the electronic structure and reaction mechanism of transition metal complexes. Our calculations at the levels of the restricted Hartree-Fock (RHF) and ...
Prediction of cellular structure in polymer foams
(1992)
A theoretical model is presented which predicts the effect of physical properties and operating conditions on the structures formed during the polymer foaming processes. The nucleation rate expression is combined with the ...
Highway diplomacy : interregional connections and international relations
(1992)
This dissertation shows that global infrastructure is created by interaction among intermediary groups. These groups are part of an Intermediary Sector of the World Economy that has evolved in scale during the last three ...
Testing for goodness of fit using nonparametric techniques
(1992)
When one fits a parametric model to data it is advisable to test the adequacy of the model through goodness-of-fit techniques. A nuisance of many existing nonparametric tests is that they depend on a smoothing parameter ...
Multilevel codes for PSK signaling over the Rayleigh fading channel
(1992)
In this research we investigate the application of multilevel codes to the Rayleigh fading channel, the modulation form at being the MPSK constellation. The first part of the study reveals that effectively twice the diversity ...
A study of electrical and thermal properties and their use to detect natural gas hydrates in ocean sediments
(1992)
Natural gas hydrates may exist in deep ocean sediments in the presence of gas. Since recovery of hydrate samples is very difficult using conventional geotechnical sampling operations the development of in situ detection ...