Research program on the rheological properties of flowing suspensions. The primary purpose of the research supported by this grant was to study the flow characteristics of concentrated suspensions of non-colloidal solid particles and thereby construct a comprehensive and robust theoretical framework for modeling such systems quantitatively. At first glance, this seemed like a modest goal, not difficult to achieve, given that such suspensions were viewed simply as Newtonian fluids with an effective viscosity equal to the product of the viscosity of the suspending fluid times a function of the particle volume fraction. But thanks to the research findings of the Principal Investigator and of his Associates, made possible by the steady and continuous support which the PI received from the DOE Office of Basic Energy Sciences, the subject is now seen to be more complicated and therefore much more interesting in that concentrated suspensions have been shown to exhibit fascinating and unique rheological properties of their own that have no counterpart in flowing Newtonian or even non-Newtonian (polymeric) fluids. In fact, it is generally acknowledged that, as the result of these investigations for which the PI received the 2001 National Medal of Science, our understanding of how suspensions behave under …

The goal of this project was to develop catalytic materials and processes that would be effective in the destruction of tars formed during the gasification of black liquor and biomass. We report here the significant results obtained at the conclusion of this two year project.

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

The authors present molecular dynamics simulation results for the viscosity and mutual diffusion constant of a strongly asymmetric two-component plasma (TCP). They compare the results with available theoretical models previously tested for much smaller asymmetries. for the case of viscosity they propose a new predictive framework based on the linear mixing rule, while for mutual diffusion they point out some consistency problems of widely used Boltzmann equation based models.

Daily newspaper from Sapulpa, Oklahoma 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.

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

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

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

This report provides a broad but by no means an exhaustive, survey of federal statutes and regulations that specifically refer to race, gender, or ethnicity as factors to be considered in the administration of any federal program. Such measures may include, but are not limited to, goals, timetables, set-asides, and quotas, as those terms are generally (however imperfectly) understood. Based on several searches of LEXIS/NEXIS and WESTLAW legal databases, and a variety of search strategies, the compilation seeks to be as comprehensive as possible. With certain noted exceptions, the report collectively describes those statutes, regulations, or executive orders uncovered by our research which appear, in any manner, to prefer or consider race, gender, or ethnicity as affirmative factors in federal employment, in the allocation of federal contracts, or in granting any federal benefit to individuals or institutions. Several laws and regulations directed to “socially and economically disadvantaged” individuals and institutions are included because, as more fully explained by the report, that term has been defined administratively and by statute to presumptively apply to specific racial and ethnic minorities.

his report is a chronological list of these proclamations for 2002 and 2003, indicating the proclamation number and its Federal Register citation.

Historically, national commemorative observances were recommended by Congress through the legislative process. This practice was discontinued by the House of Representatives in January 1995, although the Senate continues to issue sense of the Senate resolutions recommending the establishment of commemoratives. It has now become standard practice for special observances to be designated by a proclamation issued by the President. This report is a chronological list of these proclamations for 1997 and 1998, indicating the proclamation number and its Federal Register citation

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

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

Hydrogen-induced cracking is characterized by the decreased ductility and fracture toughness of a material due to the absorption of atomic hydrogen in the metal crystal lattice. Corrosion is the source of hydrogen generation. For the current design of the engineered barrier without backfill, hydrogen-induced cracking may be a concern because the titanium drip shield can be galvanically coupled to rock bolts (or wire mesh), which may fall onto the drip shield, thereby creating conditions for hydrogen production by electrochemical reaction. The purpose of this report is to analyze whether the drip shield will fail by hydrogen-induced cracking under repository conditions within 10,000 years after emplacement. Hydrogen-induced cracking is a scenario of premature failure of the drip shield. This report develops a realistic model to assess the form of hydrogen-induced cracking degradation of the drip shield under the hydrogen-induced cracking. The scope of this work covers the evaluation of hydrogen absorbed due to general corrosion and galvanic coupling to less noble metals (e.g., Stainless Steel Type 316 and carbon steels) under the repository conditions during the 10,000-year regulatory period after emplacement and whether the absorbed hydrogen content will exceed the critical hydrogen concentration value, above which the hydrogen-induced cracking is assumed …

In looking at simulations for the x-ray microscope the question ''Is it necessary to use the multislice method to adequately model the transmission of x-rays through the target?'' has been raised. Another question that has been raised is ''Is it necessary to include diffraction effects in our simulations?'' The purpose of this report is to lay these questions to rest. The short answer to both of these questions is ''No''. The multislice method (also known as the beam propagation method (BPM)) is used to solve the paraxial wave equation. The paraxial wave equation is what the Helmholtz equation reduces to in the limit of small index of refraction deviations and small angular deviations. It lies in the middle ground between full wave simulation and ray tracing (a short wavelength limit). The BPM takes a region and cuts it into strips. The method then propagates a wavefront through the region one strip at a time. For each strip, the method first propagates the wavefront the width of the strip as if through free space (diffraction step), then the method applies a phase correction based on the index of refraction distribution in the strip (refraction step). In this way the method marches …

News release about the use of shuttle buses to connect DART passengers between two rail stations while construction work is conducted along the rail line.

Patent relating to methods for generating numerical values indicative of frequencies of selected features in objects, and a computer system implementing the method.

The purpose of this report is to provide a three-dimensional (3-D) representation of the mineral abundance within the geologic framework model domain. The mineralogic model enables project personnel to estimate mineral abundances at any position, within the model region, and within any stratigraphic unit in the model area. The model provides the abundance and distribution of 10 minerals and mineral groups within 22 stratigraphic sequences or model layers in the Yucca Mountain area. The uncertainties and limitations associated with this model are discussed in Section 6.4. Model validation accomplished by corroboration with data not cited as direct input is discussed in Section 7.

Monthly student newspaper from St. Philip's College in San Antonio, Texas that includes campus news along with advertising.

Plasma oxidation was used to obtain radiocarbon dates on six different materials from a naturally mummified baby bundle from the Lower Pecos River region of southwest Texas. This bundle was selected because it was thought to represent a single event and would illustrate the accuracy and precision of the plasma oxidation method. Five of the materials were clearly components of the original bundle with 13 dates combined to yield a weighted average of 2135 {+-} 11 B.P. Six dates from a wooden stick of Desert Ash averaged 939 {+-} 14 B.P., indicating that this artifact was not part of the original burial. Plasma oxidation is shown to be a virtually non-destructive alternative to combustion. Because only sub-milligram amounts of material are removed from an artifact over its exposed surface, no visible change in fragile materials has been observed, even under magnification. The method is best applied when natural organic contamination is unlikely and serious consideration of this issue is needed in all cases. If organic contamination is present, it will have to be removed before plasma oxidation to obtain accurate radiocarbon dates.

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

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A letter report issued by the Government Accountability Office with an abstract that begins "In 1906, the Alaska Native Allotment Act authorized the Secretary of the Interior to allot individual Alaska Natives (Native) a homestead of up to 160 acres. The validity of some of Copper Valley Electric Association's (Copper Valley) rights-of-way within Alaska Native allotments is the subject of ongoing dispute; in some cases the allottees assert that Copper Valley's electric lines trespass on their land. The Department of the Interior's (Interior) Bureau of Land Management (BLM) and Bureau of Indian Affairs (BIA) are responsible for granting rights-of-way and handling disputes between allotees and holders of rights-of-way. GAO determined (1) the number of conflicts between Native allotments and Copper Valley rights-of-way and the factors that contributed to these conflicts, (2) the extent to which existing remedies have been used to resolve these conflicts, and (3) what legislative alternatives, if any, could be considered to resolve these conflicts."