Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification; Whether a housing authority created under chapter 392 of the Local Government Code is subject to the Open Meetings Act (RQ-897)

Mass spectrometers and residual gas analyzers (RGA) are used in a variety of applications for analysis of volatile and semi-volatile materials. Analysis is performed by detecting fragments of gas molecules, based on their mass to charge ratio, which are generated in the mass spectrometer. When used as a detector for a gas chromatograph, they function as a means to quantitatively identify isolated volatile species which have been separated from other species via the gas chromatograph. Vacuum Technology, Inc., (VTI) produces a magnetic sector mass spectrometer/RGA which is used in many industrial and laboratory environments. In order to increase the utility of this instrument, it is desirable to increase the mass scanning speed, thereby increasing the number of applications for which it is suited. This project performed the following three upgrades on the computer interface. (1) A new electrometer was designed and built to process the signal from the detector. This new electrometer is more sensitive, over 10 times faster, and over 100 times more stable than the electrometer it will replace. (2) The controller EPROM was reprogrammed with new firmware. This firmware acts as an operating system for the interface and is used to shuttle communications between the PC and …

This document provides information regarding the source and the estimated quantity of potential airborne radionuclide emissions resulting from the operation of the Cold Vacuum Drying (CVD) Facility. The construction of the CVD Facility is scheduled to commence on or about December 1996, and will be completed when the process begins operation. This document serves as a Notice of Construction (NOC) pursuant to the requirements of 40 Code of Federal Regulations (CFR) 61 for the CVD Facility. About 80 percent of the U.S. Department of Energy`s spent nuclear fuel (SNF) inventory is stored under water in the Hanford Site K Basins. Spent nuclear fuel in the K West Basin is contained in closed canisters, while the SNF in the K East Basin is in open canisters, which allow release of corrosion products to the K East Basin water. Storage of the current inventory in the K Basins was originally intended to be on an as-needed basis to sustain operation of the N Reactor while the Plutonium-Uranium Extraction (PUREX) Plant was refurbished and restarted. The decision in December 1992 to deactivate the PURF-X Plant left approximately 2,100 MT (2,300 tons) of uranium as part of the N Reactor SNF in the K …

The objectives of this project were to develop computationally efficient numerical methods for modeling surfactant flooding in enhanced oil recovery and aquifer remediation. Surfactants have been considered by several oil companies to reduce the large residual oil saturations, and are being seriously considered for cleanup of dense contaminants in aquifers, particularly chlorinated hydrocarbons. The authors employed second-order Godunov methods for the discretization of the conservation laws, and lowest-order mixed finite element methods for the discretization of the pressure equation. They also used dynamically adaptive mesh refinement to concentrate the computational work. The development of the second-order Godunov method required a mathematical analysis of the hyperbolic wave structure; this analysis discovered undesirable features f the model that lead to infinite characteristic speeds. Minor modifications of the model to remove the infinite characteristic speeds improved the stability of the model considerably. The use of adaptive mesh refinement required the development of several techniques for upscaling various physical quantities, and a multigrid iteration for the pressure equation on an adaptively refined grid. Numerical simulations showed that the second-order Godunov method is reasonably effective in preserving sharp fluid fronts, but is too computationally expensive in so complex a fluid model. On the other hand, …