Currently, design of earth-penetrating munitions relies heavily on empirical relationships to estimate behavior, making it difficult to design novel munitions or address novel target situations without expensive and time-consuming full-scale testing with relevant system and target characteristics. Enhancing design through numerical studies and modeling could help reduce the extent and duration of full-scale testing if the models have enough fidelity to capture all of the relevant parameters. This can be separated into three distinct problems: that of the penetrator structural and component response, that of the target response, and that of the coupling between the two. This project focuses on enhancing understanding of the target response, specifically granular geomaterials, where the temporal and spatial multi-scale nature of the material controls its response. As part of the overarching goal of developing computational capabilities to predict the performance of conventional earth-penetrating weapons, this project focuses specifically on developing new models and numerical capabilities for modeling sand response in ALE3D. There is general recognition that granular materials behave in a manner that defies conventional continuum approaches which rely on response locality and which degrade in the presence of strong response nonlinearities, localization, and phase gradients. There are many numerical tools available to address …

Water bodies, such as freshwater lakes, are known to be net emitters of carbon dioxide (CO2), and methane (CH4). In recent years, significant greenhouse gas (GHG) emissions from tropical, boreal, and mid-latitude reservoirs have been reported. At a time when hydropower is increasing worldwide, better understanding of seasonal and regional variation in GHG emissions is needed in order to develop a predictive understanding of such fluxes within man-made impoundments. We examined power-producing dam complexes within xeric temperate locations in the northwestern United States. Sampling environments on the Snake (Lower Monumental Dam Complex) and Columbia Rivers (Priest Rapids Dam Complex) included tributary, mainstem, embayment, forebay, and tailrace areas during winter and summer 2012. At each sampling location, GHG measurement pathways included surface gas flux, degassing as water passed through dams during power generation, ebullition within littoral embayments, and direct sampling of hyporheic pore-water. Measurements were also carried out in a free-flowing reach of the Columbia River to estimate unaltered conditions. Surface flux resulted in very low emissions, with reservoirs acting as a sink for CO2 (up to –262 mg m-2 d-1, which is within the range previously reported for similarly located reservoirs). Surface flux of methane remained below 1 mg CH4 …

A sample of Sludge Batch 7b (SB7b) was taken from Tank 40 in order to obtain radionuclide inventory analyses necessary for compliance with the Waste Acceptance Product Specifications (WAPS). The SB7b WAPS sample was also analyzed for chemical composition including noble metals and fissile constituents, and these results are reported here. These analyses along with the WAPS radionuclide analyses will help define the composition of the sludge in Tank 40 that is currently being fed to the Defense Waste Processing Facility (DWPF) as SB7b. At the Savannah River National Laboratory (SRNL) the 3-L Tank 40 SB7b sample was transferred from the shipping container into a 4-L high density polyethylene bottle and solids were allowed to settle over the weekend. Supernate was then siphoned off and circulated through the shipping container to complete the transfer of the sample. Following thorough mixing of the 3-L sample, a 558 g sub-sample was removed. This sub-sample was then utilized for all subsequent analytical samples. Eight separate aliquots of the slurry were digested, four with HNO{sub 3}/HCl (aqua regia) in sealed Teflon{reg_sign} vessels and four with NaOH/Na{sub 2}O{sub 2} (alkali or peroxide fusion) using Zr crucibles. Two Analytical Reference Glass - 1 (ARG-1) standards were …

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This report briefly discusses the March 11, 2001, earthquake off the east coast of Honshu, Japan's largest island. The earthquake caused an automatic shutdown of eleven of Japan's fifty-five operating nuclear power plants. The plants closes to the earthquake's epicenter, Fukushima and Onagawa, were damaged by the earthquake and resulting tsunami. This report also discusses efforts by the United States and other countries to provide assistance to Japan to deal with the nuclear crisis.

Hydrogen storage is the most challenging task for the hydrogen economy. We established a multidisciplinary research program for high throughput combinatorial synthesis and characterization of novel nanoporous and metastable complex hydrides, coupled to fundamental material studies including electronic, structural and kinetic transport modeling, and pump-probe experiments. Our research is based the concept of hybrid nanostructures that store hydrogen by a combination of chemi- and physorption: atomic hydrogen is stored in metastable hydrides while molecule hydrogen is stored in the nanometer pores of the hydrides. Metastable nanostructured hydride has been achieved by introducing structural and compositional disorders through high throughput elemental substitution/doping, catalyst addition, and nonequilibrium processing. Fast screening compatible with the combinatorial synthesis was achieved by combining X-ray structural characterization with the development of a laser-based microbalance. Manufacturing of nanoporous metahydrides that are identified as promising by the combinatorial synthesis has been explored along with the materials search.

This report discusses the contested November 28, 2010, presidential election runoff election in Côte d'Ivoire. Laurent Gbagbo and his rival, former Prime Minister Alassane Ouattara, both continue to claim to have won the runoff and to exercise exclusive national executive authority, and to attempt to consolidate their control over state institutions. An increase in armed conflicts in late February 2011, among other indicators, signals the possible outbreak of a renewed civil war. This report discusses these events, as well as U.S. and international efforts to support a peaceful transition in Côte d'Ivoire, which has remained largely divided since the civil war that began in 2002.

The United States provides assistance to 47 African countries, and the United States Agency for International Development (USAID) has 23 missions in Africa. In recent years, U.S. assistance to Africa saw a major increase, especially in health-related programs. This report provides an overview of U.S. aid to Africa, including the strategic objectives that shape U.S. aid to Africa, information about specific aid programs and initiatives, and the Obama Administration's FY2011 foreign aid budget request.

This report discusses the current political conditions of Uganda, which has long been ravaged by the Lord's Resistance Army (LRA), an armed rebel group backed by the government of Sudan. In particular, the report focuses on largely-unsuccessful Ugandan efforts to resolve the conflict with the LRA, as well as talks with the U.S. under the Bush Administration and the recent suicide bombings in Kampala, Uganda, in July 2010.

This report is intended to provide an overview of the fundamentals of the Senate amendment process. It summarizes many of the rules, precedents, and practices of the Senate affecting the consideration of amendments to measures on the floor.

This report identifies the most commonly used motions and requests available to Members during proceedings in the House of Representatives. It does not identify motions and requests used when the House is in the Committee of the Whole House on the State of the Union.

This report discusses secret, or closed, sessions of the House and Senate exclude the press and the public.

This report describes the City two types of long-term debt: General Obligation Debt and Revenue Bond Debt. The City also differentiates between tax-supported and revenue-supported debt to provide the public with a clear understanding of what debt will be paid by property taxes versus rate revenues. However, Data provided in this report is as of the date of publication and constitutes existing long-term debt obligations only. This report does not include forward looking statements nor does it include debt that may be incurred in the future. Interested parties should refer to the City’s audited financial statements and other disclosure documents when investing.

The following table provides access to names and contact information for CRS experts on policy concerns relating to the nuclear and humanitarian disaster unfolding in Japan. Specific policy areas are identified.

This report provides a detailed description of the six educational assistance programs that are available to veterans or other eligible individuals through the Department of Veterans Affairs (VA). Although the programs are administered by the VA, some of the funding for the programs is provided by the Department of Defense (DOD), which transfers monies from its education trust fund to the VA for disbursement.

Air Products and Chemicals, Inc., is developing the sour pressure swing adsorption (PSA) technology which can be used to reject acid gas components (hydrogen sulfide [H{sub 2}S] and carbon dioxide [CO{sub 2}]) from sour syngas streams such as coal gasification syngas. In the current work, tests were conducted to investigate the impact of continuous exposure of real sour syngas and dilute levels of hydrochloric acid (HCl) and ammonia (NH{sub 3}) on the preferred adsorbent of that process. The results show a modest (~10%–15%) decrease in CO{sub 2} adsorption capacity after sour syngas exposure, as well as deposition of metals from carbonyl decomposition. Continuous exposure to HCl and NH{sub 3} yield a higher degree of CO{sub 2} capacity degradation (up to 25%). These tests represent worst-case approaches since the exposure is continuous and the HCl and NH{sub 3} levels are relatively high compare to an industrial sour syngas stream. Long-term PSA tests are needed to unequivocally evaluate the impact of cyclic exposure to these types of streams.

This is a final deliverable report for the Advanced Spectral Analysis for Radioxenon project with a focus on radioxenon event categorization.

This report discusses the U.S. export control system for defense related exports and examines the current split administration of the various parts of the system and proposals to unify and streamline the system.

Final report on neutron shield construction and testing.

This report discusses U.S. warning systems and related disaster management programs in place to prepare for and react to tsunamis. This issue is discussed in relation to the March 2011 earthquake and tsunami that devastated Japan.

This report discusses the continued debate amongst congressional policymakers regarding telecommunications reform. A major point of the ongoing discussion is whether action is needed to ensure unfettered access to the Internet.

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The Separations Process Research Unit (SPRU) complex located on the Knolls Atomic Power Laboratory (KAPL) site in Niskayuna, New York, was constructed in the late 1940s to research the chemical separation of plutonium and uranium (Figure A-1). SPRU operated as a laboratory scale research facility between February 1950 and October 1953. The research activities ceased following the successful development of the reduction oxidation and plutonium/uranium extraction processes. The oxidation and extraction processes were subsequently developed for large scale use by the Hanford and Savannah River sites (aRc 2008a). Decommissioning of the SPRU facilities began in October 1953 and continued through the 1990s.

This report begins by discussing the structure of agency travel card programs, and then discusses weaknesses in agency controls that have contributed to waste, fraud, and abuse. It then examines relevant legislation introduced or enacted in the 111th Congress, including the Government Charge Card Abuse Prevention Act of 2009 (H.R. 2189 and S. 942), and concludes with observations on the information available to Congress for oversight of agency travel card programs.