The Supercritical CO2 Turbine Test project was to demonstrate the inherent efficiencies of a supercritical carbon dioxide (s-CO2) power turbine and associated turbomachinery under conditions and at a scale relevant to commercial concentrating solar power (CSP) projects, thereby accelerating the commercial deployment of this new power generation technology. The project involved eight partnering organizations: NREL, Sandia National Laboratories, Echogen Power Systems, Abengoa Solar, University of Wisconsin at Madison, Electric Power Research Institute, Barber-Nichols, and the CSP Program of the U.S. Department of Energy. The multi-year project planned to design, fabricate, and validate an s-CO2 power turbine of nominally 10 MWe that is capable of operation at up to 700°C and operates in a dry-cooled test loop. The project plan consisted of three phases: (1) system design and modeling, (2) fabrication, and (3) testing. The major accomplishments of Phase 1 included: Design of a multistage, axial-flow, s-CO2 power turbine; Design modifications to an existing turbocompressor to provide s-CO2 flow for the test system; Updated equipment and installation costs for the turbomachinery and associated support infrastructure; Development of simulation tools for the test loop itself and for more efficient cycle designs that are of greater commercial interest; Simulation of s-CO2 power cycle …

The core objectives of this project were two separate but integrated products, collectively providing game-changing Avoided Cost capabilities. • The first was a kit of avoided cost tools and data that any solar provider can use a-lacarte or as a whole. It’s open and easily accessible nature allows the rapid and accurate calculation of avoided cost in whatever context and software that make sense (“Typical and Avoided Cost Tools”). This kit includes a dataset of typical energy rates, costs and usage that can be used for solar prospecting, lead generation and any situation where data about an opportunity is missing or imperfect. • The second is a web application and related APIs specifically built for solar providers to radically streamline their lead-to-sale process (“Solar Provider Module”). The typical and Avoided Cost tools are built directly into this, and allow for solar providers to track their opportunities, collaborate with their installers and financiers, and close more sales faster.

Various U. S. Department of Energy (DOE) low and medium-level radioactive waste sites contain mixtures of heavy metals, radionuclides and assorted organic materials. In addition, there are numerous sites around the world that are contaminated with a mixture of organic and inorganic contaminants. In most sites, over time, water infiltrates the wastes, and releases metals, radionuclides and other contaminants causing transport into the surrounding environment. We investigated the role of fermentative microorganisms in such sites that may control metal, radionuclide and organics migration from source zones. The project was initiated based on the following overarching hypothesis: Metals, radionuclides and other contaminants can be mobilized by infiltration of water into waste storage sites. Microbial communities of lignocellulose degrading and fermenting microorganisms present in the subsurface of contaminated DOE sites can significantly impact migration by directly reducing and immobilizing metals and radionuclides while degrading complex organic matter to low molecular weight organic compounds. These low molecular weight organic acids and alcohols can increase metal and radionuclide mobility by chelation (i.e., certain organic acids) or decrease mobility by stimulating respiratory metal reducing microorganisms. We demonstrated that fermentative organisms capable of affecting the fate of Cr6+, U6+ and trinitrotoluene can be isolated from organic-rich …

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Laboratory tests have been completed with simulated tank waste samples to investigate the effects of phosphate, fluoride, and nitrate on the dissolution rate and equilibrium solubility of gibbsite in sodium hydroxide solution at 22 and 40{degrees}C. Results are compared to relevant literature data and to computer model predictions. The presence of sodium nitrate (3 M) caused a reduction in the rate of gibbsite dissolution in NaOH, but a modest increase in the equilibrium solubility of aluminum. The increase in solubility was not as large, though, as the increase predicted by the computer model. The presence of phosphate, either as sodium phosphate or sodium fluoride phosphate, had a negligible effect on the rate of gibbsite dissolution, but caused a slight increase in aluminum solubility. The magnitude of the increased solubility, relative to the increase caused by sodium nitrate, suggests that the increase is due to ionic strength (or water activity) effects, rather than being associated with the specific ion involved. The computer model predicted that phosphate would cause a slight decrease in aluminum solubility, suggesting some Al-PO4 interaction. No evidence was found of such an interaction.

This report discusses poverty in United States that varies widely across the population according to age, education, labor force attachment, family living arrangements, and area of residence, among other factors. The report elaborates on the poverty among selected groups, the geography of poverty, and the research supplemental poverty measure.

This report discusses current controversies and arguments for and against public financing of presidential campaigns; legislative history; elements of the program; taxpayer and candidate participation; financial status of the program; recent legislation; and analysis of various policy proposals. If Congress chooses to alter the program, consensus will be necessary in what has historically been a particularly complex and contentious area of campaign finance policy.

This report identifies two types of labor enforcement issues related to Free Trade Agreements approved by Congress: (1) those that relate to the FTA provisions themselves, including their definitions and their enforceability, and (2) those that relate to executive branch responsibilities, such as resource availability and determining dispute settlement case priorities. This report does not address other labor issues in the various free trade agreements, including cooperative consultation provisions.

This report discusses the proposed creation of the National Network for Manufacturing Innovation (NNMI), which would help accelerate innovation and support manufacturing technology commercialization. The report includes an overview of the topic as well as discussion on the Administration's proposal, preliminary activities, legislative status, and issues for consideration.

This report discusses the responsibilities of Legal Services Corporation (LSC), which is a private, nonprofit, federally funded corporation that helps provide legal assistance to low-income people in civil (i.e., noncriminal) matters.

This report discusses Tunisia's pro-democracy movement; concerns over potential instability in a previously secure, pro-Western area; and U.S.-Tunisian relations.

A letter report issued by the Government Accountability Office with an abstract that begins "From 2004 to 2012, the federal non-postal civilian workforce grew by 258,882 employees, from 1.88 million to 2.13 million (14 percent). Permanent career employees accounted for most of the growth, increasing by 256,718 employees, from 1.7 million in 2004 to 1.96 million in 2012 (15 percent). Three agencies--the Departments of Defense (DOD), Homeland Security (DHS), and Veterans Affairs (VA)--accounted for about 94 percent of this increase. At DOD, officials said that converting certain positions from military to civilian, as well as the growth of the agency's acquisition and cybersecurity workforce, contributed to this overall increase. At VA, officials said the increased demand for medical and health-related services for military veterans drove most of the growth in personnel levels. DHS officials said the increase in employment was due in large part to the nation's border security requirements. (In contrast, ten agencies had fewer career permanent employees in 2012 than they did in 2004). Government-wide, most of the increase in employment from 2004 to 2012 occurred within occupational categories that require higher skill and educational levels. These categories include professional occupations (e.g., doctors and scientists), and administrative occupations …

A letter report issued by the Government Accountability Office with an abstract that begins "Limitations in the intelligence community's (IC) inventory of contract personnel hinder the ability to determine the extent to which the eight civilian IC elements--the Central Intelligence Agency (CIA), Office of the Director of National Intelligence (ODNI), and six components within the Departments of Energy, Homeland Security, Justice, State, and the Treasury--use these personnel. The IC Chief Human Capital Officer (CHCO) conducts an annual inventory of core contract personnel that includes information on the number and costs of these personnel. However, GAO identified a number of limitations in the inventory that collectively limit the comparability, accuracy, and consistency of the information reported by the civilian IC elements as a whole. For example, changes to the definition of core contract personnel and data shortcomings limit the comparability of the information over time. In addition, the civilian IC elements used various methods to calculate the number of contract personnel and did not maintain documentation to validate the number of personnel reported for 37 percent of the 287 records GAO reviewed. Further, IC CHCO did not fully disclose the effects of such limitations when reporting contract personnel and cost information …

This report gives an overview of the issues related to federal or state laws that condition the initial or ongoing receipt of governmental benefits on passing drug tests. These regulations are vulnerable to constitutional challenge, most often due to issues of personal privacy and Fourth Amendment protections against "unreasonable searches."

This report summarizes congressional authorization and appropriations processes for the Army Corps of Engineers. It also discusses agency activities under general authorities. Congress directs the Corps through authorizations, appropriations, and oversight of its studies, construction projects, and other activities.

This report discusses the current political conditions of Cuba as well as its relationship with the United States. In particular, the report focuses on U.S. policy regarding Cuba including various economic sanctions, human rights issues, and foreign aid appropriations.

This report provides background on the Leahy laws, including a brief history of their legislative development; an overview guide to the standards and processes used to "vet"--that is, review and clear--foreign military and other security forces for gross violations of human rights; and a brief review of salient issues regarding the provisions of the laws and their implementation.