Advanced Redox Flow Batteries for Stationary Electrical Energy Storage (open access)

Advanced Redox Flow Batteries for Stationary Electrical Energy Storage

This report describes the status of the advanced redox flow battery research being performed at Pacific Northwest National Laboratories for the U.S. Department of Energy’s Energy Storage Systems Program. The Quarter 1 of FY2012 Milestone was completed on time. The milestone entails completion of evaluation and optimization of single cell components for the two advanced redox flow battery electrolyte chemistries recently developed at the lab, the all vanadium (V) mixed acid and V-Fe mixed acid solutions. All the single cell components to be used in future kW-scale stacks have been identified and optimized in this quarter, which include solution electrolyte, membrane or separator; carbon felt electrode and bi-polar plate. Varied electrochemical, chemical and physical evaluations were carried out to assist the component screening and optimization. The mechanisms of the battery capacity fading behavior for the all vanadium redox flow and the Fe/V battery were discovered, which allowed us to optimize the related cell operation parameters and continuously operate the system for more than three months without any capacity decay.
Date: March 19, 2012
Creator: Li, Liyu; Kim, Soowhan; Xia, Guanguang; Wang, Wei & Yang, Zhenguo
System: The UNT Digital Library
Fact Sheet: The FY2013 State and Foreign Operations Budget Request (open access)

Fact Sheet: The FY2013 State and Foreign Operations Budget Request

On February 13, 2012, the Obama Administration submitted its FY2013 budget request, including $54.7 billion for State Department, Foreign Operations, and Related Appropriations. Of the total request, $18.6 billion is for programs funded through the State operations and related agencies (a 4.6% increase over FY2012 estimates), and $36.1 billion is for foreign operations (a 0.1% increase over FY2012 estimates). This fact sheet provides a brief overview of the request.
Date: March 19, 2012
Creator: Epstein, Susan B.; Lawson, Marian Leonardo & Tiersky, Alex L.
System: The UNT Digital Library
Gap Workshop Report (open access)

Gap Workshop Report

None
Date: March 19, 2012
Creator: Blink, J. A. & Budnitz, R J
System: The UNT Digital Library
Housing Choice Vouchers: Options Exist to Increase Program Efficiencies (open access)

Housing Choice Vouchers: Options Exist to Increase Program Efficiencies

A letter report issued by the Government Accountability Office with an abstract that begins "Several factors—including rising rents, declining household incomes, and decisions to expand the number of assisted households—were key drivers of the approximately 29 percent increase (before inflation) in housing agencies’ expenditures for the voucher program between 2003 and 2010. Congress and HUD have taken steps to limit cost increases while maintaining assistance for existing program participants. For example, Congress moved away from providing funding to housing agencies based on the number of voucher-assisted households they were authorized to subsidize and instead provided funding based on the generally lower number of voucher-assisted households housing agencies actually subsidized in the prior year. Further, HUD has proposed administrative relief and program flexibility for housing agencies, including streamlining program requirements and reducing subsidies paid."
Date: March 19, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Integrated Detection of Pathogens and Host Biomarkers for Wounds (open access)

Integrated Detection of Pathogens and Host Biomarkers for Wounds

The increasing incidence and complications arising from combat wounds has necessitated a reassessment of methods for effective treatment. Infection, excessive inflammation, and incidence of drug-resistant organisms all contribute toward negative outcomes for afflicted individuals. The organisms and host processes involved in wound progression, however, are incompletely understood. We therefore set out, using our unique technical resources, to construct a profile of combat wounds which did or did not successfully resolve. We employed the Lawrence Livermore Microbial Detection Array and identified a number of nosocomial pathogens present in wound samples. Some of these identities corresponded with bacterial isolates previously cultured, while others were not obtained via standard microbiology. Further, we optimized proteomics protocols for the identification of host biomarkers indicative of various stages in wound progression. In combination with our pathogen data, our biomarker discovery efforts will provide a profile corresponding to wound complications, and will assist significantly in treatment of these complex cases.
Date: March 19, 2012
Creator: Jaing, C
System: The UNT Digital Library
Intelligent Transportation Systems: Improved DOT Collaboration and Communication Could Enhance the Use of Technology to Manage Congestion (open access)

Intelligent Transportation Systems: Improved DOT Collaboration and Communication Could Enhance the Use of Technology to Manage Congestion

A letter report issued by the Government Accountability Office with an abstract that begins "State and local governments currently use ITS technologies in various ways to monitor and control traffic and inform travelers. For example, transportation agencies use cameras to monitor traffic conditions, signal technologies to control traffic flow, and dynamic message signs to inform travelers about travel conditions. By interviewing experts, GAO identified several emerging uses of ITS that have significant potential to reduce traffic congestion. For example, integrating traffic and emergency services data can allow for enhanced detection of and response to roadway incidents. However, some cities use ITS and the emerging uses to a much greater extent than others."
Date: March 19, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Interim Report on the Optimization and Feasibility Studies for the Neutron Detection without Helium-3 Project (open access)

Interim Report on the Optimization and Feasibility Studies for the Neutron Detection without Helium-3 Project

This report provides the status and results of the first year's effort in modeling and simulation to investigate alternatives to helium-3 for neutron detection in safeguards applications.
Date: March 19, 2012
Creator: Ely, James H.
System: The UNT Digital Library
Latin America and the Caribbean: Illicit Drug Trafficking and U.S. Counterdrug Programs (open access)

Latin America and the Caribbean: Illicit Drug Trafficking and U.S. Counterdrug Programs

This report provides an overview of the drug flows in the Americas and U.S. antidrug assistance programs in the region. It also raises some policy issues for Congress to consider as it exercises oversight of U.S. antidrug programs and policies in the Western Hemisphere.
Date: March 19, 2012
Creator: Ribando Seelke, Clare; Wyler, Liana Sun & Sullivan, Mark P.
System: The UNT Digital Library
Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress (open access)

Navy Aegis Ballistic Missile Defense (BMD) Program: Background and Issues for Congress

The Aegis ballistic missile defense (BMD) program, which is carried out by the Missile Defense Agency (MDA) and the Navy, gives Navy Aegis cruisers and destroyers a capability for conducting BMD operations. Under MDA and Navy plans, the number of BMD-capable Navy Aegis ships is scheduled to grow from 24 at the end of FY2011 to 36 at the end of FY2018. Issues for Congress for FY2013 include the reduction under the proposed FY2013 budget in the ramp-up rate for numbers of BMD-capable Aegis ships over the next few years; the U.S. economic impact of shifting four Aegis ships to Rota, Spain; U.S. vs. European naval contributions to European BMD; the lack of a target for simulating the endo-atmospheric (i.e., final) phase of flight of China's DF-21 anti-ship ballistic missile; the capability of the SM-3 Block IIB Aegis BMD interceptor; and technical risk in the Aegis program.
Date: March 19, 2012
Creator: O'Rourke, Ronald
System: The UNT Digital Library
Numerical Modeling of 90Sr and 137Cs Transport from a Spill in the B-Cell of the 324 Building, Hanford Site 300 Area (open access)

Numerical Modeling of 90Sr and 137Cs Transport from a Spill in the B-Cell of the 324 Building, Hanford Site 300 Area

To characterize the extent of contamination under the 324 Building, a pit was excavated on the north side of the building in 2010 by Washington Closure Hanford LLC (WCH). Horizontal closed-end steel access pipes were installed under the foundation of the building from this pit and were used for measuring temperatures and exposure rates under the B-Cell. The deployed sensors measured elevated temperatures of up to 61 C (142 F) and exposure rates of up to 8,900 R/hr. WCH suspended deactivation of the facility because it recognized that building safety systems and additional characterization data might be needed for remediation of the contaminated material. The characterization work included additional field sampling, laboratory measurements, and numerical flow and transport modeling. Laboratory measurements of sediment physical, hydraulic, and geochemical properties were performed by Pacific Northwest National Laboratory (PNNL) and others. Geochemical modeling and subsurface flow and transport modeling also were performed by PNNL to evaluate the possible extent of contamination in the unsaturated sand and gravel sediments underlying the building. Historical records suggest that the concentrated 137Cs- and 90Sr-bearing liquid wastes that were spilled in B-Cell were likely from a glass-waste repository testing program associated with the Federal Republic of Germany (FRG). …
Date: March 19, 2012
Creator: Rockhold, Mark L.; Bacon, Diana H.; Freedman, Vicky L.; Lindberg, Michael J. & Clayton, Ray E.
System: The UNT Digital Library
Using a Neural Network to Determine the Hatch Status of the AERI at the ARM North Slope of Alaska Site (open access)

Using a Neural Network to Determine the Hatch Status of the AERI at the ARM North Slope of Alaska Site

The fore-optics of the Atmospheric Emitted Radiance Interferometer (AERI) are protected by an automated hatch to prevent precipitation from fouling the instrument's scene mirror (Knuteson et al. 2004). Limit switches connected with the hatch controller provide a signal of the hatch state: open, closed, undetermined (typically associated with the hatch being between fully open or fully closed during the instrument's sky view period), or an error condition. The instrument then records the state of the hatch with the radiance data so that samples taken when the hatch is not open can be removed from any subsequent analysis. However, the hatch controller suffered a multi-year failure for the AERI located at the ARM North Slope of Alaska (NSA) Central Facility in Barrow, Alaska, from July 2006-February 2008. The failure resulted in misreporting the state of the hatch in the 'hatchOpen' field within the AERI data files. With this error there is no simple solution to translate what was reported back to the correct hatch status, thereby making it difficult for an analysis to determine when the AERI was actually viewing the sky. As only the data collected when the hatch is fully open are scientifically useful, an algorithm was developed to …
Date: March 19, 2012
Creator: Zwink, A. B. & Turner, D. D.
System: The UNT Digital Library
What Have we Learned from the LCLS Injector? (open access)

What Have we Learned from the LCLS Injector?

The LCLS injector reliably delivered a high quality electron beam since it started operations three years ago. Some initial commissioning results were described in Ref. [1]. This note is to summarize what we have understood from the LCLS injector including drive laser, cathode, RF gun, injector beam line elements, beam modeling and operations. What we have learned during the LCLS injector commissioning and operation has lead to modified specifications for the UV drive laser system. A flat temporal profile originally required in the LCLS design is not necessary to achieve a low emittance electron beam for the LCLS operations. According to our recent studies, a laser pulse with 3 ps Gaussian temporal profile (FWHM) can achieve a similar emittance compared to a flat temporal profile laser. The sensitivity of the emittance to the laser pulse length at 250 pC of bunch charge was studied, as shown in Figure 1. Only slight variations were observed for both projected and time-sliced emittances with laser pulses from 2.2 ps to 4.5 ps FWHM. Space charge forces certainly become weak but RF emittance which is proportional to the bunch length square increases due to the longer laser pulse. Thus, the projected emittance optimum may …
Date: March 19, 2012
Creator: Zhou, Feng & Brachmann, Axel
System: The UNT Digital Library