Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Missouri University of Science and Technology
Opportunities for Undergraduate Research Experience Program (OURE)
- Discipline
Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Design And Development Of A Superconducting Induction Motor, Terry Bowness
Design And Development Of A Superconducting Induction Motor, Terry Bowness
Opportunities for Undergraduate Research Experience Program (OURE)
The discovery of high-Tc superconductors has led to the development of a number of experimental superconducting motors. This report documents the design, construction, and methods of evaluating the performance of an induction motor with a high-Tc superconducting rotor. While others have utilized the Meissner effect, our superconducting motor works due to Lenz’s law. In theory such a device will act as an induction motor only during start-up, after which its behavior is more like that of a synchronous machine. With a one-pole copper squirrel cage providing start-up torque two high-Tc discs encased in the rotor core act …
Mielnik Probability Spaces And Functional Equations, J. J. Mitchell
Mielnik Probability Spaces And Functional Equations, J. J. Mitchell
Opportunities for Undergraduate Research Experience Program (OURE)
The invariance properties of the solutions of those functional equations naturally occurring in the construction of Mielnik probability spaces are studied, and in turn are related to one another. In particular, the possibilities for fixed points of these solutions are found, and the relationships between these results are discussed. The two functional equations studied include a representation of the generalized parallelogram law and an equation used in the modeling of polarization phenomena. The main result of the paper lies in the extention of previous research on Mielnik probability spaces to a higher dimension, as well as a discussion of their …
Shooting Method Solutions Of Eigenvalue Problems, Xi Chen
Shooting Method Solutions Of Eigenvalue Problems, Xi Chen
Opportunities for Undergraduate Research Experience Program (OURE)
A shooting method was developed to study eigenvalue problems derived from Schrodinger equation. The challenging problem, the two-dimensional hydrogen system with the logarithmic potential function, was successfully solved by the shooting method. But no complete proof was given for its rationale and correctness. This paper not only gives the complete proof for the shooting method, but also generalizes it to solve a large class of eigenvalue problems. In a certain sense, the shooting method proves more effective numerically and more powerful theoretically than the classical functional analysis approach.
Automated Seebeck Measurements Applied To Conducting Ceramics, J. S. Shapiro
Automated Seebeck Measurements Applied To Conducting Ceramics, J. S. Shapiro
Opportunities for Undergraduate Research Experience Program (OURE)
The Seebeck coefficient (also known as thermopower) is important in the characterization of conducting ceramics because it is very sensitive to the electronic structure. An apparatus was built during the Fall of 1990 and Spring of 1991 which was designed to measure the Seebeck coefficient in small high-resistivity samples in the temperature range from 80 K to 450 K. A reproducible thermocouple-to-sample electrical and thermal contact technique was found to be important to data accuracy but difficult to achieve. The goals of this project were to improve the thermocouple block design to give better thermal and electrical contact with the …
The Synthesis And Characterization Of Metal Binding Polymers Containing 2,2'-Biimidazole, R. A. Proctor
The Synthesis And Characterization Of Metal Binding Polymers Containing 2,2'-Biimidazole, R. A. Proctor
Opportunities for Undergraduate Research Experience Program (OURE)
Epoxides are known to form ring-opened polymer products that have demonstrated improved material strength, high heat stability, and chemical resistance as adhesives, coatings, and molding materials. It has been suggested that imidazoles can be used in the catalysis of this polymerization, and that the pyridyl nitrogen of the imidazole ring participates in epoxy ring-opening and is then incorporated in the polymeric structure. This study was conducted to test this theory of the role of pyridyl nitrogen in the reaction of 1,1'-dihydroxyethyl-2,2'- biimidazole (HEB) and metal-HEB complexes with the diglycidyl ether of bisphenol A (DGEBA). Of particular interest in this study …