Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

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

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

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

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.

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

A letter from Harriet Laney to D. Jack Davis that gives numbers for a professional travel budget.

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

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

In the US, the transportation sector consumes over one quarter of the entire energy used, almost in its entirety as petroleum products, and in quantities greater than the total US domestic oil production. The transportation sector is responsible for a significant fraction of all emissions that either prevent US cities from achieving compliance with EPA air quality standards or have serious global change implications. Finally, the GDP (Gross Domestic Product) and employment due to the sector are low and incommensurate with the high fraction of energy that the transportation sector consumes. We examine below this situation in some detail and make recommendations for improvements.

A model has been developed that accounts for grain growth during, superplastic flow and its subsequent influence on stress-strain-strain rate behavior. These studies are experimentally based and have involved two different types of superplastic materials -- a quasi-single phase metal (Coronze 638) and a microduplex metal (ultrahigh-carbon steel - UHCS). In both materials the kinetics of strain-enhanced grain growth have been studied as a function of strain, strain rate and temperature. An equation for the rate of grain growth has been developed that incorporates the influence of temperature. The evolution of the grain size distribution during superplastic deformation has also been investigated. Our model integrates grain growth laws derived from these studies with two mechanism based, rate dependent constitutive laws to predict the stress-strainstrain rate behavior of materials during superplastic deformation. The influence of crain size distribution and its evolution with strain and strain rate on the stress-strain-strain rate behavior has been represented through the use of distributed parameters. The model can capture the stress-strain-strain rate behavior over a wide range of strains and strain rates with a single set of parameters. Many subtle features of the mechanical response of these materials can be adequately predicted.

The Department of Energy has established specifications for the DWPF product, which require that the DWPF provide estimates of the service life of the canister label, provide assurance that the DWPF canister will be leaktight when shipped, demonstrate that the contents of the canistered waste form will not lead to internal corrosion of the canister. The DWPF has elected to meet these requirements, in part, by characterizing canisters produced in the facility during the Startup Test Program. This includes canisters filled on the pour turntable (normal conditions) and canisters filled on the drain turntable (credible upset conditions expected to be more severe due to higher temperatures). This document identifies the requirements for characterization of the canister fabrication welds and canister labels (characterization of canister closure welds is being performed by Equipment Engineering Section), and for estimation of their service life in DWPF`s Glass Waste Storage Building.

Gamma-induced volatility of simulated DWPF high-level nuclear waste glasses is highly dependent upon the redox state of the glass. For oxidized glasses with an Fe{sup 2+}/(Fe{sup 2+} + Fe{sup 3+}) ratio < 0.1, no volatility was detected after gamma irradiation. Since the projected DWPF high-level radioactive waste glasses will be oxidized, no significant gamma-induced volatility is expected for these glasses upto the glass transition temperature. For larger pieces of highly-reduced DWPF simulated waste glass, no volatility was observed (using {approximately}100 mg pieces in the TGA) after gamma irradiation. However, for powdered samples of this reduced glass, volatility changes upon gamma radiation were detected at 350 and 475{degree}C. The volatility at 350{degree}C was due to changes at the glass surface whereas the change in volatility at 475{degree}C were due to interactions of gamma irradiation within the bulk of the glass. The glass transition temperatures of both oxidized and reduced glasses were unaffected by gamma irradiation but did increase upon a second heat cycle. Results are also presented which reveal that no significant change in redox level within the glass occurred as a result of gamma irradiation.

During this period work has encompassed: (a) development of electropotential drop techniques to monitor the growth of cracks in steel specimens for a variety of specimen geometries; (b) micromechanical modeling of fracture using finite element calculations of crack and notch-tip stress and strain fields; (3) examining helium effects on radiation damage in austenitic and ferritic stainless steels; (4) analysis of the degradation of the mechanical properties of austenitic stainless steels for the purpose of assessing the feasibility of using these steels in ITER; (5) development of an integrated approach to integrity assessment; and (6) development of advanced methods of measuring fracture properties.

A new type of electrodynamic balance was designed, constructed and applied to the study of the chemistry of macerals and the chemical reaction between CaO sorbent particles and SO{sub 2}. The single-particle device was coupled to a Raman spectrometer. With this balance a single electrically charged microparticle is suspended in visible and infrared laser beams by means of superposed ac and dc electrical fields. The apparatus was designed to permit gas flow through the chamber so that gas-solid and gas-liquid chemical reactions can be carried out. A visible laser beam was used to illuminate the particle for Raman and fluorescence measurements, and an infrared laser beam was used to heat the particle. An overview of the experimental system is presented in Figure 1. The levitated particles were heated from two sides using a CO{sub 2} laser operating at the infrared wavelength of 10.6 {mu}m. The optical system used to direct the heating laser beam to the target is shown in Figure 2. Infrared detectors indicated in Figure 1 were used to measure the particle temperature by two-color pyrometery. A new technique was explored to independently determine the particle temperature; the method involves measuring the ratio of the intensities of Stokes …

The overall objective is to study the mechanisms and the energy dependence of heavy ion fragmentation by studying the reactions of heavy ion projectiles (e.g. {sup 4}He, {sup 16}O, {sup 20}Ne, {sup 28}Si, {sup 56}Fe) in a variety of targets (H, He, C, Si, Cu, Pb) and at a number of beam energies exceeding 0.1 GeV/nucleon. The results have application to questions in high-energy nuclear astrophysics. Most of the discussion is on low-energy {sup 16}O,{sup 28}Si data analysis. The description includes analysis procedures and techniques, detector calibrations, data selections and normalizations. Cross section results for the analysis are also presented. 83 figs., 6 tabs., 73 refs.

Newsletter of the Texas Bureau of Disease Control and Epidemiology discussing the news, activities, and events of the organization and other information related to health in Texas.

Letter from Ruben Ochoa to El Nora Grevelle containing an inscription for a historical marker that the WASP plans to set up.

During this period work has encompassed: (a) development of electropotential drop techniques to monitor the growth of cracks in steel specimens for a variety of specimen geometries; (b) micromechanical modeling of fracture using finite element calculations of crack and notch-tip stress and strain fields; (3) examining helium effects on radiation damage in austenitic and ferritic stainless steels; (4) analysis of the degradation of the mechanical properties of austenitic stainless steels for the purpose of assessing the feasibility of using these steels in ITER; (5) development of an integrated approach to integrity assessment; and (6) development of advanced methods of measuring fracture properties.

Gamma-induced volatility of simulated DWPF high-level nuclear waste glasses is highly dependent upon the redox state of the glass. For oxidized glasses with an Fe[sup 2+]/(Fe[sup 2+] + Fe[sup 3+]) ratio < 0.1, no volatility was detected after gamma irradiation. Since the projected DWPF high-level radioactive waste glasses will be oxidized, no significant gamma-induced volatility is expected for these glasses upto the glass transition temperature. For larger pieces of highly-reduced DWPF simulated waste glass, no volatility was observed (using [approximately]100 mg pieces in the TGA) after gamma irradiation. However, for powdered samples of this reduced glass, volatility changes upon gamma radiation were detected at 350 and 475[degree]C. The volatility at 350[degree]C was due to changes at the glass surface whereas the change in volatility at 475[degree]C were due to interactions of gamma irradiation within the bulk of the glass. The glass transition temperatures of both oxidized and reduced glasses were unaffected by gamma irradiation but did increase upon a second heat cycle. Results are also presented which reveal that no significant change in redox level within the glass occurred as a result of gamma irradiation.