NITRATE CONVERSION OF HB-LINE REILLEXTM HPQ RESIN (open access)

NITRATE CONVERSION OF HB-LINE REILLEXTM HPQ RESIN

Reillex{trademark} HPQ ion exchange resin is used by HB Line to remove plutonium from aqueous streams. Reillex{trademark} HPQ resin currently available from Vertellus Specialties LLC is a chloride ionic form, which can cause stress corrosion cracking in stainless steels. Therefore, HB Line Engineering requested that Savannah River National Laboratory (SRNL) convert resin from chloride form to nitrate form in the Engineering Development Laboratory (EDL). To perform this task, SRNL treated two batches of resin in 2012. The first batch of resin from Reilly Industries Batch 80302MA was initially treated at SRNL in 2001 to remove chloride. This batch of resin, nominally 30 liters, has been stored wet in carboys since that time until being retreated in 2012. The second batch of resin from Batch 23408 consisted of 50 kg of new resin purchased from Vertellus Specialties in 2012. Both batches were treated in a column designed to convert resin using downflow of 1.0 M sodium nitrate solution through the resin bed followed by rinsing with deionized water. Both batches were analyzed for chloride concentration, before and after treatment, using Neutron Activation Analysis (NAA). The resin specification [Werling, 2003] states the total chlorine and chloride concentration shall be less than 250 …
Date: May 29, 2012
Creator: Steimke, J.; Williams, M.; Steeper, T. & Leishear, R.
System: The UNT Digital Library
Final Technical Report Recovery Act: Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines (open access)

Final Technical Report Recovery Act: Online Nonintrusive Condition Monitoring and Fault Detection for Wind Turbines

The penetration of wind power has increased greatly over the last decade in the United States and across the world. The U.S. wind power industry installed 1,118 MW of new capacity in the first quarter of 2011 alone and entered the second quarter with another 5,600 MW under construction. By 2030, wind energy is expected to provide 20% of the U.S. electricity needs. As the number of wind turbines continues to grow, the need for effective condition monitoring and fault detection (CMFD) systems becomes increasingly important [3]. Online CMFD is an effective means of not only improving the reliability, capacity factor, and lifetime, but it also reduces the downtime, energy loss, and operation and maintenance (O&M) of wind turbines. The goal of this project is to develop novel online nonintrusive CMFD technologies for wind turbines. The proposed technologies use only the current measurements that have been used by the control and protection system of a wind turbine generator (WTG); no additional sensors or data acquisition devices are needed. Current signals are reliable and easily accessible from the ground without intruding on the wind turbine generators (WTGs) that are situated on high towers and installed in remote areas. Therefore, current-based CMFD …
Date: May 29, 2012
Creator: Qiao, Wei
System: The UNT Digital Library
Control of New Kinetic Barriers & Design of Nanorods (open access)

Control of New Kinetic Barriers & Design of Nanorods

The accomplishments of this project include three elements. The first element directly relates to the focus of this project. Specifically, we have determined the three-dimensional Ehrlich-Schwoebel barriers, with and without surfactants, and two manuscripts in preparation; references refer to the list of journal publications. Further, we have discovered a characteristic length scale - the dimension of atomic islands bounded by multiple-layer surface steps. This discovery has made it possible to understand scientifically why nanorods synthesis is possible at all, will enable science-based design of nanorods, and may impact energy technology through nanomaterials design and synthesis. The second element relates to an exploration - synthesis of nanowires. This exploration is made possible through additional support of a Small Grant Exploratory Research from NSF. Through a combination of atomistic simulations, theories, and experiments, the PI and colleagues have made two contributions to the field. Specifically, they have revealed the physical reason why periodic twins develop during growth of SiC nanowires. Further, they have discovered that SiC nanowire films have an order-of-magnitude higher friction that their macroscopic counterpart, something that has never been reported before. The third elements relates to knowledge dissemination. The PI has co-edited (with Helena van Swygenhoven of PSI) an …
Date: May 29, 2012
Creator: Huang, Hanchen
System: The UNT Digital Library
The Global Challenge of HIV/AIDS, Tuberculosis, and Malaria (open access)

The Global Challenge of HIV/AIDS, Tuberculosis, and Malaria

This report reviews the U.S. response to HIV/AIDS, TB, and malaria and discusses several issues Congress may consider as it debates spending levels and priority areas for related programs.
Date: May 29, 2012
Creator: Kendall, Alexandra E.
System: The UNT Digital Library
Recovery Act: Tax Debtors Have Received FHA Mortgage Insurance and First-Time Homebuyer Credits (open access)

Recovery Act: Tax Debtors Have Received FHA Mortgage Insurance and First-Time Homebuyer Credits

A letter report issued by the Government Accountability Office with an abstract that begins "The Federal Housing Administration (FHA) insured over $1.44 billion in mortgages for 6,327 borrowers with $77.6 million in federal tax debt who benefited from the 2009 American Recovery and Reinvestment Act. Of these borrowers, 3,815 individuals claimed and received $27.4 million in Recovery Act First-Time Homebuyer Credits (FTHBC). This analysis includes tax debtors who (1) benefited from FHA’s increased loan limits, or (2) claimed the FTHBCs and received FHA mortgage insurance of any value. Federal policy makes delinquent tax debtors ineligible for FHA mortgage insurance unless they repay their debt or are in a valid repayment agreement with the Internal Revenue Service (IRS), but the FTHBC, like all tax credits, was available to those who qualified, regardless of their tax debt. GAO could not determine the proportion of borrowers who were ineligible for FHA insurance because GAO could not systematically identify which of the 6,327 borrowers were in valid repayment agreements using the data GAO received from IRS. However, GAO did find that 5 of the 8 borrowers completely evaluated were ineligible because they were not in valid repayment agreements at the time they obtained FHA …
Date: May 29, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Health Center Program: Improved Oversight Needed to Ensure Grantee Compliance with Requirements (open access)

Health Center Program: Improved Oversight Needed to Ensure Grantee Compliance with Requirements

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Health and Human Services’ (HHS) Health Resources and Services Administration (HRSA) relies on three main methods to oversee grantees’ compliance with the 19 key program requirements."
Date: May 29, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Health Center Program: 2011 Grant Award Process Highlighted Need and Special Populations and Merits Evaluation (open access)

Health Center Program: 2011 Grant Award Process Highlighted Need and Special Populations and Merits Evaluation

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Health and Human Services’ (HHS) Health Resources and Services Administration (HRSA) revised its New Access Point (NAP) competitive award process in fiscal year 2011 to increase the emphasis on the need for services in the applicant’s proposed service area, and on the three special populations—migrant and seasonal farmworkers, homeless people, and residents of public housing—designated by the Public Health Service Act. The act requires that certain proportions of Health Center Program funding go to health centers serving the special populations. To increase the emphasis on need, HRSA increased the weight given to need in the application review process. To target health centers serving special populations, HRSA gave extra points in the application process to applicants proposing to serve them. When this was insufficient to meet the required proportions, HRSA moved some applicants ahead of others in the award rank order list, a method it had used in the past. The effect of HRSA’s actions on the award outcome was magnified in fiscal year 2011 because (1) HRSA received less program funding than it had anticipated, and (2) it needed to increase the share …
Date: May 29, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
School Bullying: Extent of Legal Protections for Vulnerable Groups Needs to Be More Fully Assessed (open access)

School Bullying: Extent of Legal Protections for Vulnerable Groups Needs to Be More Fully Assessed

A letter report issued by the Government Accountability Office with an abstract that begins "School bullying is a serious problem, and research shows that it can have detrimental outcomes for victims, including adverse psychological and behavioral outcomes. According to four nationally representative surveys conducted from 2005 to 2009, an estimated 20 to 28 percent of youth, primarily middle and high school-aged youths, reported they had been bullied during the survey periods. However, differences in definitions and questions posed to youth respondents make it difficult to discern trends and affected groups. For example, the surveys did not collect demographic information by sexual orientation or gender identity. The Departments of Education (Education) and Health and Human Services (HHS) are partially addressing the issue of inconsistent definitions by collaborating with other federal departments and subject matter experts to develop a uniform definition of bullying that can be used for research purposes. However, gaps in knowledge about the extent of bullying of youths in key demographic groups remain."
Date: May 29, 2012
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
The U.S. Postal Service's Use of Contractors to Deliver Mail: Background and Recent Developments (open access)

The U.S. Postal Service's Use of Contractors to Deliver Mail: Background and Recent Developments

Currently, the U.S. Postal Service (USPS) is collectively bargaining with the National Association of Letter Carriers (NALC) and National Rural Letter Carriers Association (NRLCA). One issue that may or may not be settled is the Postal Service's use of non-USPS employees (i.e., contractors) to deliver mail. If the parties cannot come to a satisfactory arrangement, Congress may be approached to consider the matter.
Date: May 29, 2012
Creator: Kosar, Kevin R.
System: The UNT Digital Library
U.S.-China Diplomacy Over Chinese Legal Advocate Chen Guangcheng (open access)

U.S.-China Diplomacy Over Chinese Legal Advocate Chen Guangcheng

The case of blind Chinese legal advocate Chen Guangcheng, who escaped from illegal house arrest in China's Shandong Province on April 20, 2012, and made his way to Beijing, the United States Embassy, and, ultimately, the United States, has generated strong congressional interest. This report begins by examining implications of the Chen case for the place of human rights in U.S.-China relations. It then discusses why Beijing may have been willing to negotiate with the United States at all over the fate of a Chinese citizen inside China. The report highlights the remaining issues in the case, details the understandings reached between the two governments, and then provides background on Chen Guangcheng and a list of his family and other associates in China who may be at risk. The report includes a map showing Chen's home district and Beijing, the city to which he escaped. It also includes a timeline of developments in the case from April 20, 2012, until May 19, 2012, based upon information available at the time of publication.
Date: May 29, 2012
Creator: Lawrence, Susan V. & Lum, Thomas
System: The UNT Digital Library
U.S.-Japan Economic Relations: Significance, Prospects, and Policy Options (open access)

U.S.-Japan Economic Relations: Significance, Prospects, and Policy Options

This report discusses issues regarding U.S.-Japan economic relations, since the economic condition of each nation can affect the world economy and a U.S.-Japan bilateral economic relationship could influence economic conditions in other countries. U.S. and Japanese leaders have several options on how to manage their relationship, including stronger reliance on the World Trade Organization; special bilateral negotiating frameworks and agreements; or a free trade agreement.
Date: May 29, 2012
Creator: Cooper, William H.
System: The UNT Digital Library