A large component of radon entry cannot be explained by pressure differences between the soil and inside the structures. The persistence of this radon entry even when the house is pressurized by 1 Pa indicates that it must be due to molecular diffusion. The radon entry rate as measured by accumulators below ground level (soil + concrete) is roughly 2 times greater than that measured above ground level (concrete alone). The soil permeability is about 10{sup {minus}12} m{sup 2} and does not change dramatically with depth down to 2 m. The diffusion component of radon entry is reduced by about 30% when the floor wall joint is sealed. The Rn3D model is operating on our computer system and is being modified to accommodate the geometrical configurations of the underground test structure.

This report, the first of two, was prepared in response to the requesting committees’ interest in receiving an interim product. It examines how energy is supplied and used in developing countries, and how energy use is linked with economic and social development and environmental quality.

This report summarizes the results of an investigation of potential water supply and water quality problems conducted under the critical area program, Chapter 52 of the Texas Water Code, in Williamson and parts of adjacent counties in Central Texas.

Monthly compilation of estimated statistics listed by Texas county for civilian labor force (C.L.F.), employment, unemployment, and overall rate.

The objective of the report is to summarize catches of non-reef oyster samples collected in upper and lower Laguna Madre during January 1986- December 1988.

Report that discusses the dynamics of the 1991 Real Estate market, and how the Texas economy will be fall flat.

Technical report that discusses the impact of rental housing on the value of single-family homes.

A report on Ron Ruggless' commercial property including estimated value and tax information.

A report on Ron Ruggless' 6000 Junius St. commercial property that includes the estimated value and tax information.

Report on a property on Junius Street.

The polycrystalline nature of thin-film CdTe and CuInSe{sub 2} solar cells continues to be a major factor in several individual losses that limit overall cell efficiency. This report describes progress in the quantitative separation of these losses, including both measurement and analysis procedures. It also applies these techniques to several individual cells to help document the overall progress with CdTe and CuInSe{sub 2} cells. Notably, CdTe cells from Photon Energy have reduced window photocurrent losses to 1 mA/Cm{sup 2}; those from the University of South Florida have achieved a maximum power voltage of 693 mV; and CuInSe{sub 2} cells from International Solar Electric Technology have shown a hole density as high as 7 {times} 10{sup 16} cm{sup {minus}3}, implying a significant reduction in compensation. 9 refs.

Monthly report providing tabular statistical information about motor vehicle accidents in rural areas of Texas during 1990, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.

Monthly report providing tabular statistical information about motor vehicle accidents in Texas during 1990, with data broken out by various criteria including number of persons, locations, types of accidents, time of day, and other factors.

Report summarizing biological information on rudd used by the Texas Parks and Wildlife Department to ban the possession, transportation, and propagation of rudd in 1990.

Monthly report detailing all Texas automobile, pickup, and motorcycle theft data, broken down into tabular lists according to various criteria.

Monthly report documenting contracts for road construction and maintentance in Texas, organized by county and district. It includes information about each project including contractor, dates, costs, and other relevant data.

Annual report of the Texas Department of Health HIV Services Program describing goals, activities, and accomplishments during fiscal year 1990.

Monthly report of the Texas A & M University Real Estate Center on statistics, recent news, and developments related to real estate.

Report to the Governor and Texas Legislature from the Texas Comptroller of Public Account providing statistics and information about the sales and franchise tax exemptions for 1991.

Report on the Texas Shrimp Fishery program providing background information on shrimp and data related to Texas fisheries, reports of shrimp fishing, and other related statistics.

Report detailing studies on the white shrimp of Texas, including catch rates, mean length, and size comparison with past years.