This report discusses the use of biomass as an energy feedstock, which is emerging as a potentially viable alternative to address U.S. energy security concerns, foreign oil dependence, rural economic development, and diminishing sources of conventional energy. Biomass (organic matter that can be converted into energy) may include food crops, crops for energy (e.g., switchgrass or prairie perennials), crop residues, wood waste and byproducts, and animal manure. This report discusses legislation regarding biomass, the evolving definition of biomass, and the positions of supporters and detractors of biomass as an alternative energy source.

This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001, and is ongoing. OEF actions take place primarily in Afghanistan, but OEF casualties also include American casualties in other countries, listed within this report.

This report discusses appropriations for Environmental Protection Agency (EPA) water infrastructure programs, focusing on congressional special project designations in the account that funds these programs. While some Members of Congress, interest groups, and Administration officials are critical of these types of congressional actions, there is little indication that the practice will cease. Information on the programmatic history of EPA involvement in assisting wastewater treatment and drinking water projects also is provided in two appendixes.

The NIF environment is very complex leading to a large and non trivial radiation background. A shield surrounding the electronics is required to lower the neutron background to less than 1e7 n/cm{sup 2}. Moving electronics to behind the 6 foot-thick target bay wall is the best shield.

Vacuum Ultraviolet (VUV) photoionization mass spectrometry has been used to measure the evolution of chemical composition for two distinct organic aerosol types as they are passed through a thermodenuder at different temperatures. The two organic aerosol types considered are primary lubricating oil (LO) aerosol and secondary aerosol from the alpha-pinene + O3 reaction (alphaP). The evolution of the VUV mass spectra for the two aerosol types with temperature are observed to differ dramatically. For LO particles, the spectra exhibit distinct changes with temperature in which the lower m/z peaks, corresponding to compounds with higher vapor pressures, disappear more rapidly than the high m/z peaks. In contrast, the alphaP aerosol spectrum is essentially unchanged by temperature even though the particles experience significant mass loss due to evaporation. The variations in the LO spectra are found to be quantitatively in agreement with expectations from absorptive partitioning theory whereas the alphaP spectra suggest that the evaporation of alphaP derived aerosol appears to not be governed by partitioning theory. We postulate that this difference arises from the alphaP particles existing as in a glassy state instead of having the expected liquid-like behavior. To reconcile these observations with decades of aerosol growth measurements, which indicate …

The new Basel Capital Adequacy Accord (Basel III) is an agreement among countries' central banks and bank supervisory authorities on the amount of capital banks must hold as a cushion against losses and insolvency. Basel III is of concern to Congress mainly because it could put U.S. financial institutions at a competitive disadvantage in world financial markets. This report follows the basic elements of the Basel III documents on the types of capital requirements and their phase-in schedule, which were approved by the Basel member central bank governors on September 12, 2010. The elements are the new definition of Tier 1 capital, the minimum common equity capital, the capital conservation buffer, countercyclical capital buffer, liquidity coverage ratio, global leverage ratio, and wind-down government capital injections. The report concludes with some implications drawn from its content.

This report discusses federal employees with permanent appointments that may be eligible for retirement and disability benefits under either the Civil Service Retirement System (CSRS) or the Federal Employees Retirement System (FERS).

This report discusses the United States' relationship with India as it regards nuclear nonproliferation and cooperation. In particular, the report discusses the Atomic Energy Act, which President Bush signed into law on December 18, 2006, and which governs U.S. nuclear cooperation. The report also discusses other related legislation as well as issues regarding U.S. nuclear trade with India.

he increased presence of foreign students in graduate science and engineering programs and in the scientific workforce has been and continues to be of concern to some in the scientific community. Enrollment of U.S. citizens in graduate science and engineering programs has not kept pace with that of foreign students in those programs. The scientific community has been divided over proposals to impose stricter immigration limits on people with scientific and technical skills. Attempts to settle upon the balance between the needs for a highly skilled scientific and technical workforce, and the need to protect and ensure job opportunities, salaries, and working conditions of U.S. scientific personnel, will continue to be debated. This report addresses these issues.

In this article we report on the properties of thin films of the full Heusler compound Co{sub 2}TiSn prepared by DC magnetron co-sputtering. Fully epitaxial, stoichiometric films were obtained by deposition on MgO (001) substrates at substrate temperatures above 600 C. The films are well ordered in the L2{sub 1} structure, and the Curie temperature exceeds slightly the bulk value. They show a significant, isotropic magnetoresistance and the resistivity becomes strongly anomalous in the paramagnetic state. The films are weakly ferrimagnetic, with nearly 1 {mu}{sub B} on the Co atoms, and a small antiparallel Ti moment, in agreement with theoretical expectations. From comparison of x-ray absorption spectra on the Co L{sub 3,2} edges, including circular and linear magnetic dichroism, with ab initio calculations of the x-ray absorption and circular dichroism spectra we infer that the electronic structure of Co{sub 2}TiSn has essentially non-localized character. Spectral features that have not been explained in detail before, are explained here in terms of the final state band structure.

Multilayer dielectric (MLD) diffraction gratings for Petawatt-class laser systems possess unique laser damage characteristics. Details of the shape of the grating lines and the concentration of absorbing impurities on the surface of the grating structures both have strong effects on laser damage threshold. It is known that electric field enhancement in the solid material comprising the grating lines varies directly with the linewidth and inversely with the line height for equivalent diffraction efficiency. Here, they present an overview of laser damage characteristics of MLD gratings, and describe a process for post-processing ion-beam etched grating lines using very dilute buffered hydrofluoric acid solutions. This process acts simultaneously to reduce grating linewidth and remove surface contaminants, thereby improving laser damage thresholds through two pathways.

This report provides background and Issues for Congress Implications for U.S. Navy capabilities related to China Naval modernization.

This report discusses the Navy's plan to develop and design a class of 12 next-generation ballistic missile submarines, or SSBN(X)s, as replacements for the 14 Ohio class SSBNs currently in operation. The report explores certain related issues for Congress, including the affordability of the project and its potential impact on other Navy shipbuilding programs, alternatives to the program, and which shipyard or shipyards will build the proposed ships.

The Savannah River Site has a mission to dissolve fissile materials and disposition them. The primary fissile material is plutonium dioxide (PuO{sub 2}). To support dissolution of these materials, the Savannah River National Laboratory (SRNL) designed and demonstrated a vacuum salt distillation (VSD) apparatus using both representative radioactive samples and non-radioactive simulant materials. Vacuum salt distillation, through the removal of chloride salts, increases the quantity of materials suitable for processing in the site's HB-Line Facility. Small-scale non-radioactive experiments at 900-950 C show that >99.8 wt % of the initial charge of chloride salt distilled from the sample boat with recovery of >99.8 wt % of the ceric oxide (CeO{sub 2}) - the surrogate for PuO{sub 2} - as a non-chloride bearing 'product'. Small-scale radioactive testing in a glovebox demonstrated the removal of sodium chloride (NaCl) and potassium chloride (KCl) from 13 PuO{sub 2} samples. Chloride concentrations were distilled from a starting concentration of 1.8-10.8 wt % to a final concentration <500 mg/kg chloride. Initial testing of a non-radioactive, full-scale production prototype is complete. A designed experiment evaluated the impact of distillation temperature, time at temperature, vacuum, product depth, and presence of a boat cover. Significant effort has been devoted to …

The report is categorized into three categories: (I) Mandated Appropriations and Fund Transfers, (II) Discretionary Funding and (III) CRS Products.

This report summarizes the Emergency Planning and Community Right-to-Know Act (EPCRA) and the major regulatory programs that mandate reporting by industrial facilities of releases of hazardous chemicals to the environment, as well as local planning to respond in the event of significant, accidental releases.

Localized, transient heating of materials using micro-scale, highly absorbing laser light has been used in many industries to anneal, melt and ablate material with high precision. Accurate modeling of the relative contributions of conductive, convective and radiative losses as a function of laser parameters is essential to optimizing micro-scale laser processing of materials. In bulk semi-transparent materials such as silicate glass melts, radiation transport is known to play a significantly larger role as the temperature increases. Conventionally, radiation is treated in the frequency-averaged diffusive limit (Rosseland approximation). However, the role and proper treatment of radiative processes under rapidly heated, high thermal gradient conditions, often created through laser-matter interactions, is at present not clear. Starting from the radiation transport equation for homogeneous, refractive lossy media, they derive the corresponding time-dependent multi-frequency diffusion equations. Zeroth and first moments of the transport equation couple the energy density, flux and pressure tensor. The system is closed by neglecting the temporal derivative of the flux and replacing the pressure tensor by its diagonal analogue. The radiation equations are coupled to a diffusion equation for the matter temperature. They are interested in modeling infrared laser heating of silica over sub-millimeter length scales, and at possibly rapid …

This report discusses the visa waiver program (VWP), which allows for a bypass of the first step by which foreign visitors are screened for admissibility to enter the United States. Some policymakers are concerned that this waiver allows terrorists to more easily enter the country. The report provides waiver-related statistics and related legislation.

A letter report issued by the Government Accountability Office with an abstract that begins "The President has announced his intention to improve the acquisition process, particularly given the half a trillion dollars the federal government spent in fiscal year 2009 on acquiring goods and services. The Department of Defense (DOD) spent $384 billion in fiscal year 2009 on goods and services--double what it spent in 2001. A high-quality workforce with the right competencies and skill sets will be critical to improving DOD acquisitions. GAO was mandated to determine the efficacy of DOD's certification training for its acquisition workforce. GAO assessed (1) DOD's capability to provide certification training, (2) the extent that such training reaches members of the workforce, and (3) the extent that previous training recommendations have been implemented. To conduct this work, GAO compared DOD's certification training to GAO guidance for effective training programs and analyzed policies, data, and previous reports on acquisition training."

Correspondence issued by the Government Accountability Office with an abstract that begins "According to some Department of Defense (DOD) and industry experts, consolidation of the defense industry along with a shift in prime-contractor business models has resulted in prime contractors subcontracting more work on the production of weapon systems and concentrating instead on systems integration. Based on some estimates, 60 to 70 percent of work on defense contracts is now done by subcontractors, with certain industries aiming to outsource up to 80 percent of the work. At the same time, there is evidence that subcontractor performance may contribute to cost and schedule delays on weapon system programs. Congress has raised questions about the extent to which primes are awarding subcontracts competitively and about the government's insight into the process prime contractors use for determining what work to make in-house and what work should be bought from subcontractors (make-or-buy decisions). In the 2009 Weapon Systems Acquisition Reform Act (WSARA), Congress directed DOD, as part of efforts to improve competition throughout the life cycle of major defense programs, to ensure that contractors' make-or-buy decisions are fair and objective. Specifically, the Secretary of Defense was directed to require prime contractors to give full …

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Defense (DOD) obligated about $380 billion in fiscal year 2009 to acquire products and services. One approach DOD can take to evaluate offerors' proposals is the best value tradeoff process in which the relative importance of price varies compared to non-cost factors. The National Defense Authorization Act for Fiscal Year 2010 required GAO to review DOD's use of the best value tradeoff process, specifically when non-cost factors were more important than price. In response, GAO determined (1) how often and for what types of contracts DOD used the best value tradeoff process; (2) why and how DOD used such an approach; and (3) challenges, if any, DOD faces in using the best value tradeoff process. GAO identified a probability sample of new, competitively awarded fiscal year 2009 contracts in which DOD obligated $25 million or more. GAO reviewed guidance, solicitations, source selection decisions, and other documents for 129 contracts and interviewed DOD contracting and program staff about the use of the best value tradeoff process."

A letter report issued by the Government Accountability Office with an abstract that begins "In the Military Construction Authorization Act, 1984, Congress authorized the Section 801 housing program, which provided a means for improving and expanding military family housing through private developers' investment. Under this authority, the Department of Defense (DOD) awarded eight contracts for the construction of on-base housing that typically consisted of two phases: the in-lease (DOD leases all of the units from developers for up to 20 years whether housing is occupied or not) and the out-lease (under some contracts, developers may rent housing to the general public while leasing the land from DOD for up to 30 more years). Based on a mandate in the National Defense Authorization Act for Fiscal Year 2010 conference report, GAO's objectives were to assess (1) the status of contracts for on-base Section 801 military housing, (2) the estimated costs to DOD and local communities that would result from the general public occupying this housing, and (3) the extent to which DOD and the services share information on modifications to the contracts and community interaction experiences. GAO visited five installations with on-base Section 801 housing, analyzed housing contracts, and interviewed relevant …

A letter report issued by the Government Accountability Office with an abstract that begins "The Federal Communications Commission's (FCC) Low-Income Program, administered by the Universal Service Administrative Company (USAC) and supported by the Universal Service Fund (USF), provides low-income households with discounts on installation costs for new telephone service and monthly charges for basic telephone service. In this requested report, GAO examined (1) how program participation and support payments have changed over the last 5 years (2005-2009), and factors that may have affected participation; (2) the extent to which goals and measures are used to manage the program; and (3) the extent to which mechanisms are in place to evaluate program risks and monitor controls over compliance with program rules. GAO surveyed state public utility commissions; reviewed key policies, procedures, and rules; and interviewed agency officials and stakeholders."

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.