Thesis (Ph. D.)--University of Wisconsin--Madison, 1982. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 210-215).

Thesis (M.Sc.). / Written for the Dept. of Earth and Planetary Sciences. Title from title page of PDF (viewed 2008/05/14). Includes bibliographical references.

Typescript, etc.

The dynamics of propelling a pig through a natural gas pipeline, using the gas being transported, are analyzed. The gas flow is assumed to be isothermal, quasi-steady, and one-dimensional. The pig is modeled as a cylinder. For the cases considered, the pig may either obstruct the pipe and allow no gas to flow past it, or may permit gas to flow through a concentric hole in the pig, through an annulus formed by the pig and the inside of the pipe, or through both. The governing equations which describe the motion of the pig and the flow of gas in the pipe are developed. These equations form a system of nonlinear differential equations which must be solved numerically. Time derivatives are replaced by backward differences, and at each time step a system of nonlinear algebraic equations is solved. A FORTRAN program is included which solves for the important gas flow parameters and the position, velocity, and acceleration of the pig as it moves through the line. ii iii Such a quantitative analysis provides a basis for pig design which could be applied to regulate pig velocities or to increase gas flow rates while the pig is in the line.

Thesis (LL.M. ) -- University of Alberta, 2010. / "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Laws, Faculty of Law, University of Alberta. Title from pdf file main screen (viewed on February 11, 2010) Includes bibliographical references.

Thesis (Ph. D.)--West Virginia University, 2003. / Title from document title page. Document formatted into pages; contains xxii, 139 p. : ill. Includes abstract. Includes bibliographical references (p. 102-104).

In Gas Treating Plants worldwide the most common practice for the measurement of foaminess of alkanolamide solvents used in the sweetening of natural gas is the sparge method. This research investigated the use of an alternative method using optical measurement technology to repeatedly measure the lifetime of a single bubble. A custom built instrument called the "Interfacial Stability Assessor" (ISA) was used in determining which selected components in the acid gas removal unit (AGRU) had an effect on the foaming ability of the treating amine solvent di-isipropanolamine (DIPA). A mass balance of the AGRU was also performed to determine the extent of hydrocarbon absorption in the solvent and foam fractionation carried out on the amine solvent to determine other possible foaming contaminants. All experiments were performed onsite at the North West Shelf Gas Treating Plant in Karratha, Australia. Overall, this research indicates that ISA is extremely sensitive to changes in surface tension and viscosity. All the organic acids tested did not increase the foamability of DIPA, however n-hexane and 'residue' from degradation products did increase the foamability of DIPA at their tested concentration ranges. / Thesis (MApSc(ChemicalTechnology))--University of South Australia, 2006

Thesis (Ph.D.)--McMaster University, 2005. / Supervisor: Stuart Mestelman. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1956. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 493-512).

Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 161-167).