A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) relies heavily on petroleum-based fuel for mobility energy--the energy required for moving and sustaining its forces and weapons platforms for military operations. Dependence on foreign oil, projected increases in worldwide demand, and rising oil costs, as well as the significant logistics burden associated with moving fuel on the battlefield, will likely require DOD to address its mobility energy demand. GAO was asked to (1) identify key efforts under way to reduce mobility energy demand and (2) assess the extent to which DOD has established an overarching organizational framework to guide and oversee these efforts. GAO reviewed DOD documents, policies, and studies, and interviewed agency officials."

A letter report issued by the Government Accountability Office with an abstract that begins "The Internal Revenue Service (IRS) has ambitious goals to improve enforcement, improve taxpayer service, increase research, and continue investing in systems modernization. The President's 2009 proposed budget is a roadmap for how IRS intends to achieve these goals. IRS's 2008 filing season performance, along with the performance of paid preparers who help taxpayers, is a key indicator of the tax system's impact on taxpayers. GAO was asked to (1) assess how the budget request allocates resources compared to prior years, (2) determine the status of systems modernization efforts, (3) assess filing season performance, and (4) assess IRS's ability to identify paid preparers. GAO compared the budget request to prior years, updated our previous reporting, compared IRS's filing season performance to prior years and goals, and interviewed IRS officials."

Testimony issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) is the single largest U.S. energy consumer. About three-fourths of its total consumption consists of mobility energy--the energy required for moving and sustaining its forces and weapons platforms for military operations. GAO was asked to discuss DOD's efforts to manage and reduce its mobility energy demand. This testimony addresses (1) energy issues that are likely to affect DOD in the future, (2) key departmental and military service efforts to reduce demand for mobility energy, and (3) DOD's management approach to guide and oversee these efforts. This testimony is based primarily on work conducted for a report that GAO issued today (GAO-08-426) on DOD's management of mobility energy."

Testimony issued by the Government Accountability Office with an abstract that begins "Established in 1971, the Environmental Protection Agency's (EPA) library network provides access to critical environmental information that the agency needs to fulfill its mission of protecting human health and the environment. The library network also provides information and services to the public. In fiscal year 2006, the network included 26 libraries across headquarters, regional offices, research centers, and laboratories. These libraries were independently operated by several different EPA program offices, depending on the nature of the libraries' collections. In 2006, facing proposed budget cuts, EPA issued a plan to reorganize the network beginning in fiscal year 2007. The plan proposed a phased approach to closing libraries and dispersing, disposing of, and digitizing library materials. GAO was asked to summarize the findings in its report being released today, Environmental Protection: EPA Needs to Ensure That Best Practices and Procedures Are Followed When Making Further Changes to Its Library Network (GAO-08-304). GAO made four recommendations in this report aimed at best practices and procedures that EPA should follow when continuing to reorganize its library network. The agency agreed with the recommendations."

Testimony issued by the Government Accountability Office with an abstract that begins "Today's testimony discusses several important topics: (1) provisions of H.R. 3268, the GAO Act, that would bolster our ability to attract and retain a highly skilled and diverse workforce needed to serve the Congress and provide for operational improvements and administrative efficiencies; (2) steps we are taking to establish and maintain a constructive working relationship with the GAO Employees Organization, International Federation of Professional and Technical Engineers (IFPTE); and (3) my commitment to ensure fair and equitable treatment for all segments of our diverse workforce, as reinforced by our commissioning of a study of various performance assessment issues related to African-American Analysts at GAO."

The hyperfine-induced 2s2p {sup 3}P{sub 0}-2s{sup 2} {sup 1}S{sub 0} transition rate for Be-like {sup 47}Ti{sup 18+} was recently measured in a storage-ring experiment by Schippers et al. [Phys. Rev. Lett. 98, 033001 (2007)]. The measured value of 0.56(3) s{sup -1} is almost 60% larger than the theoretical value of 0.356 s{sup -1} from a multiconfiguration Dirac-Fock calculation by Marques et al. [Phys. Rev. A 47, 929 (1993)]. In this work, we use a large-scale relativistic configuration-interaction method to calculate these hyperfine-induced rates for ions with Z = 6-92. Coherent hyperfine-quenching effects between the 2s2p {sup 1,3}P{sub 1} states are included in a perturbative as well as a radiation damping approach. Contrary to the claims of Marques et al., contributions from the {sup 1}P{sub 1} state are substantial and lead to a hyperfine-induced rate of 0.67 s{sup -1}, in better agreement with, though larger than, the measured value.

Both MD simulations and experimental studies have shown that liquid and gas flow through carbon nanotubes with nanometer size diameter is exceptionally fast. For applications in separation technology, selectivity is required together with fast flow. In this work, we use pressure-driven filtration experiments to study ion exclusion in silicon nitride/sub-2-nm CNT composite membranes as a function of solution ionic strength, pH, and ion valence. We show that carbon nanotube membranes exhibit significant ion exclusion at low salt concentration. Our results support a rejection mechanism dominated by electrostatic interactions between fixed membrane charges and mobile ions, while steric and hydrodynamic effects appear to be less important. Comparison with commercial nanofiltration membranes for water softening reveals that our carbon nanotube membranes provides far superior water fluxes for similar ion rejection capabilities.

High fidelity measurements of time-dependent strain in the plastic-bonded explosives LX-17-1 and PBX 9502 have been performed under constant, uni-axial, compressive load using a custom designed apparatus. The apparatus uses a combination of extensometers and linear variable differential transformers coupled with a data acquisition system, thermal controls, and gravitational loading. The materials being tested consist of a crystalline explosive material mixed with a polymeric binder. The behavior of each material is related to the type of explosive and to the percentage and type of binder. For any given plastic-bonded explosive, the creep behavior is also dependent on the stress level and test temperature. Experiments were conducted using a 3 x 3 stress-temperature matrix with a temperature range of 24 C to 70 C and with stresses ranging from 250-psi to 780-psi. Analysis of the data has shown that logarithmic curve fits provide an accurate means of quantification and facilitate a long-term predictive capability. This paper will discuss the design of the apparatus, experimental results, and analyses.

We examine the response of Arctic gas and aerosol concentrations to perturbations in pollutant emissions from Europe, East and South Asia, and North America using results from a coordinated model intercomparison. These sensitivities to regional emissions (mixing ratio change per unit emission) vary widely across models and species. Intermodel differences are systematic, however, so that the relative importance of different regions is robust. North America contributes the most to Arctic ozone pollution. For aerosols and CO, European emissions dominate at the Arctic surface but East Asian emissions become progressively more important with altitude, and are dominant in the upper troposphere. Sensitivities show strong seasonality: surface sensitivities typically maximize during boreal winter for European and during spring for East Asian and North American emissions. Mid-tropospheric sensitivities, however, nearly always maximize during spring or summer for all regions. Deposition of black carbon (BC) onto Greenland is most sensitive to North American emissions. North America and Europe each contribute {approx}40% of total BC deposition to Greenland, with {approx}20% from East Asia. Elsewhere in the Arctic, both sensitivity and total BC deposition are dominated by European emissions. Model diversity for aerosols is especially large, resulting primarily from differences in aerosol physical and chemical processing …

Many chemists have been fascinated with the development of discrete supramolecular structures that encapsulate guest molecules. These structures can be assembled through covalent or hydrogen bonds, electrostatic or metal-ligand interactions. These host structures have provided valuable insight into the forces involved in small molecule recognition. Our work has focused on the design and study of metal-ligand clusters of varying sizes. The naphthalene [M{sub 4}L{sub 6}]{sup 12-} cluster 1, shown in Figure 1, has demonstrated diastereoselective guest binding and chiral induction properties as well as the ability to catalyze reactions carried out inside the cavity in an enzyme-like manner. However, the size of the cavity (ca. 300-500 {angstrom}{sup 3}) has often limited the scope of substrates for these transformations.

Lithium borohydride, magnesium hydride and the 2:1 'destabilized' ball milled mixtures (2LiBH{sub 4}:MgH{sub 2}) underwent liquid phase hydrolysis, gas phase hydrolysis and air oxidation reactions monitored by isothermal calorimetry. The experimentally determined heats of reaction and resulting products were compared with those theoretically predicted using thermodynamic databases. Results showed a discrepancy between the predicted and observed hydrolysis and oxidation products due to both kinetic limitations and to the significant amorphous character of observed reaction products. Gas phase and liquid phase hydrolysis were the dominant reactions in 2LiBH{sub 4}:MgH{sub 2} with approximately the same total energy release and reaction products; liquid phase hydrolysis displayed the maximum heat flow for likely environmental exposure with a peak energy release of 6 (mW/mg).

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.

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

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

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

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, Greg Abbott, regarding a legal question submitted for clarification: Whether the criminal trespass provisions of section 30.05 of the Penal Code apply to recreational vehicle parks (RQ-0621-GA)

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, Greg Abbott, regarding a legal question submitted for clarification: Whether Senate Bill 1161 (2007) and House Bill 2884 (2007), both of which amended Education Code section 25.0951, can be harmonized (RQ-0625-GA)

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, Greg Abbott, regarding a legal question submitted for clarification: Whether article 2.122(a)(6) of the Code of Criminal Procedure, which grants certain state felony law enforcement authority to inspectors of the United States Postal Service, applies to inspectors of both the United States Postal Inspection Service and the United States Postal Service, Office of Inspector General (RQ-0628-GA)

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This report provides a brief history of the federal grants to state and local governments.

Free weekly newspaper that includes business and classified advertising.

Free weekly newspaper that includes business and classified advertising.