A lattice gas automata (LGA) model is described, which couples solute transport with chemical reactions at mineral surfaces and in pore networks. Chemical reactions and transport are integrated into a FHP-I LGA code as a module so that the approach is readily transportable to other codes. Diffusion in a box calculations are compared to finite element Fickian diffusion results and provide an approach to quantifying space-time ratios of the models. Chemical reactions at solid surfaces, including precipitation/dissolution, sorption, and catalytic reaction, can be examined with the model because solute diffusion and mineral surface processes are all treated explicitly. The simplicity and flexibility of the LGA approach provides the ability to study the interrelationship between fluid flow and chemical reactions in porous materials, at a level of complexity that has not previously been computationally possible. 20 refs., 8 figs.

BCR National Laboratory (BCRNL) has initiated a project aimed at evaluating the technical and economic feasibility of using a rotary kiln, suitably modified, to burn Pennsylvania anthracite wastes, co-fired with high-sulfur bituminous coal. Limestone will be injected into the kiln for sulfur control, to determine whether high sulfur capture levels can be achieved with high sorbent utilization. The principal objectives of this work are: (1) to prove the feasibility of burning anthracite refuse, with co-firing of high-sulfur bituminous coal and with limestone injection for sulfur emissions control, in a rotary kiln fitted with a Universal Energy International (UEI) air injector system; (2) to determine the emissions levels of SO{sub x} and NO{sub x} and specifically to identify the Ca/S ratios that are required to meet New Source Performance Standards; (3) to evaluate the technical and economic merits of a commercial rotary kiln combustor in comparison to fluidized bed combustors; and, (4) to ascertain the need for further work, including additional combustion tests, prior to commercial application, and to recommend accordingly a detailed program towards this end.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.

Tri-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.

Weekly student newspaper from Tarleton State University in Stephenville, Texas that includes local, state and campus news along with advertising.

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.

Tri-weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.

Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.

First part of an annual report of the Texas Railroad Commission's Oil and Gas Division providing background on the industry and the agency's activities, information related to the production of oil and gas, and data regarding production by field.

Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.

Weekly newspaper from Cotulla, Texas that includes local, state, and national news along with advertising.

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: Clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; Return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; Transfer this pathway into a fast-growing chemolithotrophic bacterium; Conduct a batch-mode optimization/analysis of scale-up variables.

The objective of this project is to produce one or more microorganisms capable of removing the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: Clone and characterize the genes encoding the enzymes of the ``4S`` pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; Return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; Transfer this pathway into a fast-growing chemolithotrophic bacterium; Conduct a batch-mode optimization/analysis of scale-up variables.

Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.

Weekly newspaper from Cotulla, Texas that includes local, state, and national news along with advertising.

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.