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Development of low-level liquid-waste-treatment systems, October 1981-March 1982
A plant design for a reverse osmosis (RO) membrane unit was completed. The design includes a conceptual diagram, specifications for a RO unit producing 40 gal/min of permeated product, a list of radioisotopes tested on RO units and the rejections achieved, a discussion of the principle of RO, a discussion of the upper limits of cation and anion concentrations (there are no lower limits), a discussion of membrane configurations and porosities, a discussion of factors affecting membranes, a section on calculating the membrane area needed for a particular application, and capital and operating cost calculations. The three factors found to affect the adsorption of cobalt on ion exchange resins were investigated in an interaction effects design experiment. These factors are solution pH, and sulfite and ammonium concentrations. The effects of these factors were investigated with both anionic and cationic resins. Greater than 99% of the cobalt can usually be removed from solutions at a pH between 3 and 6. A design for an ion-exchange pilot plant was completed. The design includes a schematic diagram; flow, resin, and column specifications; impurity limits; and operating and capital costs. A short theoretical discussion and process description are also included. The design retains flexibility …
Date:
May 28, 1982
Creator:
Williams, M.K. & Colvin, C.M.
Object Type:
Report
System:
The UNT Digital Library
Federal Building and Facility Security: Frequently Asked Questions
This report discusses the security of federal government buildings and facilities that affect not only the daily operations of the federal government but also the health, well-being, and safety of federal employees and the public.
Date:
May 28, 2014
Creator:
Reese, Shawn
Object Type:
Report
System:
The UNT Digital Library
Securing U.S. Diplomatic Facilities and Personnel Abroad: Background and Policy Issues
This report provides background information on the organization, practice, and funding of U.S. diplomatic security efforts. It also provides summary information on the September 11, 2012, attack on U.S. facilities in Benghazi, Libya, as well as on the subsequent Accountability Review Board.
Date:
May 28, 2014
Creator:
Tiersky, Alex & Epstein, Susan B.
Object Type:
Report
System:
The UNT Digital Library
Nigeria's Boko Haram: Frequently Asked Questions
This report discusses Boko Haram, a violent Nigerian Islamist movement, has grown increasingly active and deadly in its attacks against state and civilian targets in recent years.
Date:
May 28, 2014
Creator:
Blanchard, Lauren Ploch
Object Type:
Report
System:
The UNT Digital Library
Military Retirement: Background and Recent Developments
This report discusses the noncontributory military retirement system which includes monthly compensation and benefits after an active or reserve military career, disability retirement for those physically unfit to continue to serve, and survivor benefits for the eligible survivors of deceased retirees.
Date:
May 28, 2014
Creator:
Burrelli, David F. & Salazar Torreon, Barbara
Object Type:
Report
System:
The UNT Digital Library
International Food Aid Programs: Background and Issues
This report describes the major U.S. international food aid programs along with the related issues--including the Administration's reform proposals--currently before Congress.
Date:
May 28, 2014
Creator:
Schnepf, Randy
Object Type:
Report
System:
The UNT Digital Library
President Obama's Climate Action Plan
This report discusses President Obama's Climate Action Plan (CAP) to reduce emissions of carbon dioxide (CO2) and other greenhouse gases (GHG), and to encourage adaptation to expected climate change.
Date:
May 28, 2014
Creator:
Leggett, Jane A.
Object Type:
Report
System:
The UNT Digital Library
Information Security: Information System Controls at the Federal Deposit Insurance Corporation
A letter report issued by the General Accounting Office with an abstract that begins "Effective controls over information systems are essential to ensuring the protection of financial and personnel information and the security and reliability of bank examination data maintained by the Federal Deposit Insurance Corporation (FDIC). As part of our calendar year 2003 financial statement audits of three FDIC Funds, GAO assessed the effectiveness of the corporation's general controls on its information systems. Our assessment included follow up on the progress that FDIC has made in correcting or mitigating computer security weaknesses identified in our audits for calendar years 2001 and 2002."
Date:
May 28, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
DOD Operational Ranges: More Reliable Cleanup Cost Estimates and a Proactive Approach to Identifying Contamination Are Needed
A letter report issued by the General Accounting Office with an abstract that begins "For decades, the Department of Defense (DOD) has tested and fired munitions on more than 24 million acres of operational ranges. Munition constituents such as lead, trinitrotoluene (TNT), and perchlorate may cause various health effects, including cancer. Concerned about the potential cost to clean up munitions, Congress required DOD to estimate the cost to clean up its operational ranges. Congress asked GAO to determine (1) how DOD identified the location and last use of operational ranges and the basis for DOD's cost estimates for cleaning up those ranges; and (2) DOD's policy to address contaminants linked to the use of munitions on operational ranges and, where contaminants such as perchlorate have been detected, what corrective actions the military services have taken."
Date:
May 28, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Homeland Security: Management of First Responder Grants in the National Capital Region Reflects the Need for Coordinated Planning and Performance Goals
A letter report issued by the General Accounting Office with an abstract that begins "Since the tragic events of September 11, 2001, the National Capital Region (NCR), comprising jurisdictions including the District of Columbia and surrounding jurisdictions in Maryland and Virginia, has been recognized as a significant potential target for terrorism. GAO was asked to report on (1) what federal funds have been allocated to NCR jurisdictions for emergency preparedness; (2) what challenges exist within NCR to organizing and implementing efficient and effective regional preparedness programs; (3) what gaps, if any, remain in the emergency preparedness of NCR; and (4) what has been the role of the Department of Homeland Security (DHS) in NCR to date."
Date:
May 28, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Vietnamese Victims of Agent Orange and U.S.-Vietnam Relations
This report examines various estimates of the effects that the herbicide Agent Orange has had on Vietnam's people and environment, the history of U.S. policy on the issue, the current clean up efforts in Vietnam, the various forms of assistance -- including U.S. assistance -- provided to people with medical conditions associated with dioxin exposure, and the implications for bilateral relations. It concludes with a brief discussion of possible congressional responses to the issue.
Date:
May 28, 2009
Creator:
Martin, Michael F.
Object Type:
Report
System:
The UNT Digital Library
Iraq: U.S. Casualties
This report consists of a brief table summarizing casualty data compiled by the Department of Defense (DOD), including fatalities during Operation Iraqi Freedom since March 19, 2003, and since May 1, 2003, including statistics on those wounded, but not killed, since March 19, 2003.
Date:
May 28, 2009
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
Back-Up/ Peak Shaving Fuel Cell System
This Final Report covers the work executed by Plug Power from 8/11/03 – 10/31/07 statement of work for Topic 2: advancing the state of the art of fuel cell technology with the development of a new generation of commercially viable, stationary, Back-up/Peak-Shaving fuel cell systems, the GenCore II. The Program cost was $7.2 M with the Department of Energy share being $3.6M and Plug Power’s share being $3.6 M. The Program started in August of 2003 and was scheduled to end in January of 2006. The actual program end date was October of 2007. A no cost extension was grated. The Department of Energy barriers addressed as part of this program are: Technical Barriers for Distributed Generation Systems: o Durability o Power Electronics o Start up time Technical Barriers for Fuel Cell Components: o Stack Material and Manufacturing Cost o Durability o Thermal and water management Background The next generation GenCore backup fuel cell system to be designed, developed and tested by Plug Power under the program is the first, mass-manufacturable design implementation of Plug Power’s GenCore architected platform targeted for battery and small generator replacement applications in the telecommunications, broadband and UPS markets. The next generation GenCore will be …
Date:
May 28, 2008
Creator:
Staudt, Rhonda L.
Object Type:
Report
System:
The UNT Digital Library
Development of Materials Resistant to Metal Dusting Degradation-Vol 2
This is volume 2 of a two-volume report on the project. Volume 1 provides general information about industry participation and commercialization plan. This volume provides details of technical work and results.
Date:
May 28, 2008
Creator:
Natesan, Ken
Object Type:
Report
System:
The UNT Digital Library
Distortion of Crabbed Bunch Due to the Electron Cloud
In order to improve the luminosity, two crab cavities have been installed in KEKB HER and LER [1]. Since there is only one crab cavity in each ring, the crab cavity generates a horizontally titled bunch along the whole ring. The achieved specific luminosity with crabbed bunch is higher, but it is not as high as that from beam-beam simulation [2]. One of the suspicions is the electron cloud. The electron cloud in LER (positron beam) may distort the crabbed bunch and cause the luminosity drop. This note briefly estimates the bunch shape distortion due to the electron cloud in KEKB LER.
Date:
May 28, 2008
Creator:
Wang, L. & Raubenheimer, T.
Object Type:
Report
System:
The UNT Digital Library
Mapping the geometry of the F4 group
In this paper, we present a construction of the compact form of the exceptional Lie group F4 by exponentiating the corresponding Lie algebra f4. We realize F4 as the automorphisms group of the exceptional Jordan algebra, whose elements are 3 x 3 Hermitian matrices with octonionic entries. We use a parametrization which generalizes the Euler angles for SU(2) and is based on the fibration of F4 via a Spin(9) subgroup as a fiber. This technique allows us to determine an explicit expression for the Haar invariant measure on the F4 group manifold. Apart from shedding light on the structure of F4 and its coset manifold OP2 = F4/Spin(9), the octonionic projective plane, these results are a prerequisite for the study of E6, of which F4 is a (maximal) subgroup.
Date:
May 28, 2007
Creator:
Bernardoni, Fabio; Cacciatori, Sergio L; Scotti, Antonio & Cerchiai, Bianca L.
Object Type:
Article
System:
The UNT Digital Library
Spectroscopic Characterization of Intermediates in the Iron Catalyzed Activation of Alkanes
The present report begins with a brief survey of recent hypervalent iron chemistry and mentions two previously reported ferrate papers funded by the DOE/BES grant. The focus is then shifted to the seven publications acknowledging support of the grant that have not been reported since the last Progress Report, DOE/ER/14340-9, was prepared. These papers deal with: (a) the successful use of an ATR element in a stopped-flow infrared spectrometer, (b) the rationalization of a depolarization of a LiClO4 solution in polyethylene oxide high polymer, (c) an analysis of several coupled ultrasonic relaxations observed in solutions of pentoses undergoing isomerization, (d) the combination of ultrasonic absorption and Raman scattering measurements to elucidate zinc thiocyanate solutions in water, (e) the use of NMR to determine stability constants when LiClO4:12-crown-4 is dissolved in acetonitrile and in methanol, (f) the possible existence of triple ions in low permittivity solutions, and (g) the properties of a high surface area ceria aerogel. Collectively, these papers illustrate advantages of bringing several modern experimental techniques to bear on complex chemical systems.
Date:
May 28, 2007
Creator:
Eyring, Edward M.
Object Type:
Report
System:
The UNT Digital Library
Photoemission Study of Cs-NF3 Activated GaAs(100) Negative Electron Affinity Photocathodes
GaAs based negative electron affinity photocathodes activated with Cs and NF{sub 3} are used as polarized electron sources for linear accelerators. It is generally believed that the activation layer consists of CsF. The activation layers of Cs-NF{sub 3} on GaAs photocathodes are herein investigated using synchrotron radiation photoelectron spectroscopy (SR-PES). F1s, N1s and other core levels are recorded at photon energies ranging from 70eV to 820eV. Surprisingly, a significant amount of nitrogen is observed in the activation layers. Two distinct species of nitrogen are observed, one of which decreases along with the Fluorine signal as the yield of the photocathode decays with time.
Date:
May 28, 2008
Creator:
Liu, Z.; Sun, Y.; Peterson, S. & Pianetta, P.
Object Type:
Article
System:
The UNT Digital Library
New neutron cross section and fission yield data for SNManalysis
Neutron cross-section data are fundamental for the design ofnuclear interrogation systems, the maintenance of nuclear materials andwaste, and the understanding the consequences of nuclear catastrophe.Although a large body of nuclear data exists, it is often old,unreliable, or poorly determined. For several years we have collaborated,as part of an IAEA Coordinated Research Project, to precisely measure thepartial thermal neutron gamma ray cross sections for all elements fromhydrogen to uranium at the Budapest Reactor. These data will replace theunreliable tables of Lone et al [1], still widely in use, and will bepublished as an IAEA TECDOC.
Date:
May 28, 2003
Creator:
Firestone, R. B.; Molnar, G. L.; Revay, Zs. & Belgya, T.
Object Type:
Report
System:
The UNT Digital Library
SUSY at the ILC and Solving the LHC Inverse Problem
Recently a large scale study of points in the MSSM parameter space which are problematic at the Large Hadron Collider (LHC) has been performed. This work was carried out in part to determine whether the proposed International Linear Collider (ILC) could be used to solve the LHC inverse problem. The results suggest that while the ILC will be a valuable tool, an energy upgrade may be crucial to its success, and that, in general, precision studies of the MSSM are more difficult at the ILC than has generally been believed.
Date:
May 28, 2008
Creator:
Gainer, James S.
Object Type:
Article
System:
The UNT Digital Library
Argonne's Laboratory Computing Center - 2007 Annual Report.
Argonne National Laboratory founded the Laboratory Computing Resource Center (LCRC) in the spring of 2002 to help meet pressing program needs for computational modeling, simulation, and analysis. The guiding mission is to provide critical computing resources that accelerate the development of high-performance computing expertise, applications, and computations to meet the Laboratory's challenging science and engineering missions. In September 2002 the LCRC deployed a 350-node computing cluster from Linux NetworX to address Laboratory needs for mid-range supercomputing. This cluster, named 'Jazz', achieved over a teraflop of computing power (1012 floating-point calculations per second) on standard tests, making it the Laboratory's first terascale computing system and one of the 50 fastest computers in the world at the time. Jazz was made available to early users in November 2002 while the system was undergoing development and configuration. In April 2003, Jazz was officially made available for production operation. Since then, the Jazz user community has grown steadily. By the end of fiscal year 2007, there were over 60 active projects representing a wide cross-section of Laboratory expertise, including work in biosciences, chemistry, climate, computer science, engineering applications, environmental science, geoscience, information science, materials science, mathematics, nanoscience, nuclear engineering, and physics. Most important, many …
Date:
May 28, 2008
Creator:
Bair, R. & Pieper, G. W.
Object Type:
Report
System:
The UNT Digital Library
Factorization and resummation for collinear poles in QCD amplitudes
We study the origin of subleading soft and collinear poles of form factors and amplitudes in dimensionally-regulated massless gauge theories. In the case of form factors of fundamental fields, these poles originate from a single function of the coupling, denoted G({alpha}{sub s}), depending on both the spin and gauge quantum numbers of the field. We relate G({alpha}{sub s}) to gauge-theory matrix elements involving the gluon field strength. We then show that G({alpha}{sub s}) is the sum of three terms: a universal eikonal anomalous dimension, a universal non-eikonal contribution, given by the coefficient B{sub {delta}}({alpha}{sub s}) of {delta}(1-z) in the collinear evolution kernel, and a process-dependent short-distance coefficient function, which does not contribute to infrared poles. Using general results on the factorization of soft and collinear singularities in fixed-angle massless gauge theory amplitudes, we conclude that all such singularities are captured by the eikonal approximation, supplemented only by the knowledge of B{sub {delta}}({alpha}{sub s}). We explore the consequences of our results for conformal gauge theories, where in particular we find a simple exact relation between the form factor and the cusp anomalous dimension.
Date:
May 28, 2008
Creator:
Dixon, Lance J.; Magnea, Lorenzo & Sterman, George
Object Type:
Article
System:
The UNT Digital Library
Investigations of Solar Prominence Dynamics Using Laboratory Simulations
Laboratory experiments simulating many of the dynamical features of solar coronal loops have been carried out. These experiments manifest collimation, kinking, jet flows, and S-shapes. Diagnostics include high-speed photography and x-ray detectors. Two loops having opposite or the same magnetic helicity polarities have been merged and it is found that counter-helicity merging provides much greater x-ray emission. A non-MHD particle orbit instability has been discovered whereby ions going in the opposite direction of the current flow direction can be ejected from a magnetic flux tube.
Date:
May 28, 2008
Creator:
Bellan, Paul M
Object Type:
Report
System:
The UNT Digital Library
Development of Materials Resistant to Metal Dusting Degradation-Vol 1
This is Volume 1 of a two-volume report. It provides general information on industrial participation and commercialization. Volume 2 contains details of technical work and results.
Date:
May 28, 2008
Creator:
Ford, Emory A
Object Type:
Report
System:
The UNT Digital Library