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340 Representative sampling verification tank sampling and analysis plan (open access)

340 Representative sampling verification tank sampling and analysis plan

This Sampling and Analysis Plan contains requirements for characterizing the 340 vault tank 1. The objective of the sampling and characterization is to determine if the tank is homogeneous when agitated and which sampling method provides the most representative sample. A secondary objective is to collect and characterize solid samples.
Date: August 21, 1996
Creator: Olander, A.R., Westinghouse Hanford
Object Type: Report
System: The UNT Digital Library
2003 Idaho National Engineering and Environmental Laboratory Shallow Injection Well Verification and Status Report (open access)

2003 Idaho National Engineering and Environmental Laboratory Shallow Injection Well Verification and Status Report

A detailed verification of the shallow injection well inventory for Bechtel BWXT Idaho, LLC and Argonne National Laboratory-West-operated facilities was performed in 2003. Fourteen wells, or 20%, were randomly selected for the verification. This report provides updated information on the 14 shallow injection wells that were randomly selected for the 2003 verification. Where applicable, additional information is provided for shallow injection wells that were not selected for the 2003 verification. This updated information was incorporated into the 2003 Shallow Injection Wells Inventory, Sixty-eight wells were removed from the 2003 Shallow Injection Well Inventory.
Date: August 21, 2003
Creator: Lewis, M.G.
Object Type: Report
System: The UNT Digital Library
21st Century Locomotive Technology: Quarterly Technical Status Report 14 DOE/AL68284-TSR14 (open access)

21st Century Locomotive Technology: Quarterly Technical Status Report 14 DOE/AL68284-TSR14

Baseline single cylinder engine testing with unit fuel pump system has been completed. This will support subsequent development of high pressure common rail fuel injection. The hybrid battery vendor is preparing an instrumented battery with improved vibration design.
Date: August 21, 2006
Creator: Salasoo, Lembit & Topinka, Jennifer
Object Type: Report
System: The UNT Digital Library
21st Century Locomotive Technology: Quarterly Technical Status Report 18 DOE/AL68284 TSR18 (open access)

21st Century Locomotive Technology: Quarterly Technical Status Report 18 DOE/AL68284 TSR18

Nozzle optimization for a new piston bowl design is reported, covering several geometrical features. The influence of fuel sulfur level on PM emissions was investigated.
Date: August 21, 2007
Creator: Salasoo, Lembit & Topinka, Jennifer
Object Type: Report
System: The UNT Digital Library
Ab initio and density functional studies of hydrocarbon adsorption in zeolites. (open access)

Ab initio and density functional studies of hydrocarbon adsorption in zeolites.

The adsorption energies of methane and ethane in zeolites are investigated with ab initio molecular orbital theory and density functional theory. In this work we have used zeolite cluster models containing two, three, and five tetrahedral (Si, Al) atoms and have found equilibrium structures for complexes of methane, ethane, and propane with an acid site. If a large enough cluster is used and correlation effects are included via perturbation theory, the calculated adsorption energy for ethane is about 5 kcal/mol compared with the experimental value of 7.5 kcal/mol. The B3LYP density functional method gives a much smaller binding of {approximately}1 kcal/mol for ethane. The reason for the failure of density fictional theory is unclear.
Date: August 21, 1998
Creator: Curtiss, L. A.
Object Type: Article
System: The UNT Digital Library
Acceptance testing of the eddy current probes for measurement of aluminum hydroxide coating thickness on K West Basin fuel elements (open access)

Acceptance testing of the eddy current probes for measurement of aluminum hydroxide coating thickness on K West Basin fuel elements

During a recent visual inspection campaign of fuel elements stored in the K West Basin, it was noted that fuel elements contained in sealed aluminum canisters had a heavy translucent type coating on their surfaces (Pitner 1997a). Subsequent sampling of this coating in a hot cell (Pitner 1997b) and analysis of the material identified it as aluminum hydroxide. Because of the relatively high water content of this material, safety related concerns are raised with respect to long term storage of this fuel in Multi-Canister Overpacks (MCOs). A campaign in the basin is planned to demonstrate whether this coating can be removed by mechanical brushing (Bridges 1998). Part of this campaign involves before-and-after measurements of the coating thickness to determine the effectiveness of coating removal by the brushing machine. Measurements of the as-deposited coating thickness on multiple fuel elements are also expected to provide total coating inventory information needed for MCO safety evaluations. The measurement technique must be capable of measuring coating thicknesses on the order of several mils, with a measurement accuracy of 0.5 mil. Several different methods for quantitatively measuring these thin coatings were considered in selecting the most promising approach. Ultrasonic measurement was investigated, but it was determined …
Date: August 21, 1998
Creator: Pitner, A. L.
Object Type: Report
System: The UNT Digital Library
Actinide recycle in LMFBRs as a waste management alternative (open access)

Actinide recycle in LMFBRs as a waste management alternative

A strategy of actinide burnup in fast reactor systems has been investigated as an approach for reducing the long term hazards and storage requirements of the actinide waste elements and their decay daughters. The actinide recycle studies also included plutonium burnup studies in the event that plutonium is no longer required as a fuel. Particular emphasis was placed upon the timing of the recycle program, the requirements for separability of the waste materials, and the impact of the actinides on the reactor operations and performance. It is concluded that actinide recycle and plutonium burnout are attractive alternative waste management concepts. 25 refs., 14 figs., 34 tabs.
Date: August 21, 1979
Creator: Beaman, S.L.
Object Type: Report
System: The UNT Digital Library
Adaptive optics for improved retinal surgery and diagnostics (open access)

Adaptive optics for improved retinal surgery and diagnostics

It is now possible to field a compact adaptive optics (AO) system on a surgical microscope for use in retinal diagnostics and surgery. Recent developments in integrated circuit technology and optical photonics have led to the capability of building an AO system that is compact and significantly less expensive than traditional AO systems. It is foreseen that such an AO system can be integrated into a surgical microscope while maintaining a package size of a lunchbox. A prototype device can be developed in a manner that lends itself well to large-scale manufacturing.
Date: August 21, 2000
Creator: Humayun, M. S.; Sadda, S. R.; Thompson, C. A.; Olivier, S. S. & Kartz, M. W.
Object Type: Report
System: The UNT Digital Library
AFBC Roadbed Project groundwater data (open access)

AFBC Roadbed Project groundwater data

TVA permitted the use of AFBC material in a section of roadbed at Paducah, Kentucky, for the purpose of demonstrating its usability as a roadbed base. To determine if the material would leach and contaminate groundwater, four wells and seven lysimeters were installed beside and in the roadbed base material. In August 1991, TVA Field Engineering visited the AFBC Roadbed Project to collect samples and water quality data. The goal was to collect samples and data from four wells and seven lysimeters. All attempts to collect samples from the lysimeters failed with one exemption. All attempts to collect samples from the groundwater wells were successful. The analytical data from the four wells and one lysimeter are also attached. The well data is typical of groundwater in the Paducah, Kentucky area indicating that it was not affected by the AFBC roadbed material. The analysis of the lysimeter shows concentrations for iron and manganese above normal background levels, however, the data do not reflect significant concentrations of these heavy metals. Also, the difficulty in obtaining the lysimeter samples and the fact that the samples had to be composited to obtain sufficient quantity to analyze would make a qualitative evaluation of the data …
Date: August 21, 1992
Creator: Carpenter, W.
Object Type: Report
System: The UNT Digital Library
De-alerting of U.S. nuclear forces: a critical appraisal (open access)

De-alerting of U.S. nuclear forces: a critical appraisal

Since the end of the Cold War, there have been pressures by disarmament advocates to move more quickly to draw down, toward zero, the number of nuclear weapons in U.S. and Russian arsenals. They criticize the process of negotiating arms control agreements as being too slow, and point out that treaty implementation is hampered by the necessity of ratification by the U.S. Senate and Russian Duma. One method of moving more rapidly toward nuclear abolition suggested by some analysts is de-alerting of nuclear-weapon delivery systems. De-alerting is defined as taking steps that increase significantly the time required to launch a given delivery vehicle armed with a nuclear warhead. Although there is little inclination by the U.S. Government to de-alert its nuclear forces at present, some academic literature and press stories continue to advocate such steps. This paper offers a critique of de-alerting proposals together with an assessment of the dangers of accidental, unauthorized, or unintended use of nuclear weapons. It concludes that de-alerting nuclear forces would be extremely de-stabilizing, principally because it would increase the value to an opponent of launching a first strike.
Date: August 21, 1998
Creator: Bailey, K. C. & Barish, F.
Object Type: Report
System: The UNT Digital Library
Analysis and modeling of a stripline beam kicker and septum (open access)

Analysis and modeling of a stripline beam kicker and septum

A fast stripline beam kicker and septum are used to dynamically switch a high current electron beam between two beamlines. The transport of the beam through these structures is determined by the quality of the applied electromagnetic fields as well as temporal effects due to the wakefields produced by the beam. In addition, nonlinear forces in the structure will lead to emittance growth. The effect of these issues is investigated analytically and by using particle transport codes. Due to the distributed nature of the beam-induced effects, multiple macro-particles (slices) are used in the particle transport code, where each slice consists of an ensemble of particles with an initial distribution in phase space. Changes in the multipole moments of an individual slice establish electromagnetic wakes in the structure and are allowed to interact with subsequent beam macro-particles to determine the variation of the steering, focusing, and emittance growth during the beam pulse.
Date: August 21, 1998
Creator: Caporaso, G. J.; Chen, Y. J.; Poole, B. R. & Wang, L. F.
Object Type: Article
System: The UNT Digital Library
Analysis of Radiocarbon, Stable Isotopes and DNA in Teeth to Facilitate Identification of Unknown Decedents (open access)

Analysis of Radiocarbon, Stable Isotopes and DNA in Teeth to Facilitate Identification of Unknown Decedents

None
Date: August 21, 2012
Creator: Alkass, K.; Saitoh, H.; Buchholz, B. A.; Holmlund, G.; Senn, D. R.; Spalding, K. L. et al.
Object Type: Article
System: The UNT Digital Library
Apparatus and method for pyrolyzing biomass material (open access)

Apparatus and method for pyrolyzing biomass material

A technique for pyrolyzing biomass materials is disclosed wherein a hot surface is provided having a predetermined temperature which is sufficient to pyrolyze only the surface strata of the biomass material without substantially heating the interior of the biomass material thereby providing a large temperature gradient from the surface strata inwardly of the relatively cool biomass materials. Relative motion and physical contact is produced between the surface strata and the hot surface for a sufficient period of time for ablative pyrolyzation by heat conduction to occur with minimum generation of char.
Date: August 21, 1981
Creator: Diebold, J. P. & Reed, T. B.
Object Type: Patent
System: The UNT Digital Library
Argonne National Laboratory-east site environmental report for calendar year 2001. (open access)

Argonne National Laboratory-east site environmental report for calendar year 2001.

This report discusses the accomplishments of the environmental protection program at Argonne National Laboratory-East (ANL-E) for calendar year 2001. The status of ANL-E environmental protection activities with respect to the various laws and regulations that govern waste handling and disposal is discussed, along with the progress of environmental corrective actions and restoration projects. To evaluate the effects of ANL-E operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL-E site were analyzed and compared with applicable guidelines and standards. A variety of radionuclides were measured in air, surface water, on-site groundwater, and bottom sediment samples. In addition, chemical constituents in surface water, groundwater, and ANL-E effluent water were analyzed. External penetrating radiation doses were measured, and the potential for radiation exposure to off-site population groups was estimated. Results are interpreted in terms of the origin of the radioactive and chemical substances (i.e., natural, fallout, ANL-E, and other) and are compared with applicable environmental quality standards. A U.S. Department of Energy dose calculation methodology, based on International Commission on Radiological Protection recommendations and the U.S. Environmental Protection Agency's CAP-88 (Clean Air Act Assessment Package-1988) computer code, was used in preparing this …
Date: August 21, 2002
Creator: Golchert, N. W. & Kolzow, R. G.
Object Type: Report
System: The UNT Digital Library
Atlanta's Kent Igleheart Brings Home 2001 Outstanding Coordinator Award: Clean Cities Alternative Fuel Information Series Fact Sheet (open access)

Atlanta's Kent Igleheart Brings Home 2001 Outstanding Coordinator Award: Clean Cities Alternative Fuel Information Series Fact Sheet

Fact sheet includes an overview of the accomplishments of Atlanta's Clean Cities coordinator Kent Igleheart, who received the 2001 Outstanding Coordinator Award.
Date: August 21, 2001
Creator: LaRocque, T.
Object Type: Book
System: The UNT Digital Library
Automatic x-ray image analysis and sorting of laser fusion targets (open access)

Automatic x-ray image analysis and sorting of laser fusion targets

A microcomputer-based x-ray image analysis system to select and measure laser fusion targets is described. This system positions a photographic plate in x and y, focuses a microscope image, digitizes and extracts measurements within seconds.
Date: August 21, 1979
Creator: Singleton, R.M. & Perkins, D.E.
Object Type: Article
System: The UNT Digital Library
Award-Winning System Assays Radiation Waste With Radiation (open access)

Award-Winning System Assays Radiation Waste With Radiation

More than half a million drums of radioactive waste are stored at 30 Department of Energy sites across the nation, with thousands more to come as facilities at weapons complex sites are dismantled. All of these drums must be assayed to determine and verify their contents and levels of radioactivity so they can be transported for permanent storage or disposal. A system that assays containers of radioactive waste safely, accurately, and nonintrusively has garnered a prestigious R and D 100 Award--presented annually by R and D Magazine to ''the 100 most technologically significant new products and processes of the year''--for Lawrence Livermore National Laboratory and its commercial partner, Bio-Imaging Research, Inc. (BIR) from Lincolnshire, Illinois. The award-winning Waste Inspection Tomography for Non-Destructive Assay (WIT-NDA) system was developed by a team of engineers and physicists headed by Livermore's Patrick Roberson and Harry Martz. The system combines active and passive computed tomography and nuclear spectroscopy to accurately quantify all detectable gamma rays emitted from waste containers. The WIT-NDA is part of BIR's Waste Inspection Tomography system, which provides nondestructive examination and assay of radioactive waste and has been commercially available since August 1999. ''The WIT-NDA is an excellent example of successful technology …
Date: August 21, 2000
Creator: Roberson, G. P.
Object Type: Report
System: The UNT Digital Library
ET-based mixed-donor CT salt : [ET/MET/MT](ReO{sub 4}). (open access)

ET-based mixed-donor CT salt : [ET/MET/MT](ReO{sub 4}).

A new charge-transfer(CT) salt of the ET-based mixed-donor, [ET/MET/MT](ReO{sub 4}), has been prepared by the electrocrystallization. This salt has been revealed to be a 1:1 salt by x-ray structure analysis and micro-Raman spectroscopy. EPR measurement gives g = 2.007 and {_}H{sub pp} = 9.18G at 300K. It shows a semiconducting behavior with E{sub g} = 92-110 meV depending on the samples.
Date: August 21, 2002
Creator: Noh, D.-Y.; Han, Y.-K.; Kang, W.; Kang, H. & Geiser, U.
Object Type: Article
System: The UNT Digital Library
Benchmarks and models for 1-D radiation transport in stochastic participating media (open access)

Benchmarks and models for 1-D radiation transport in stochastic participating media

Benchmark calculations for radiation transport coupled to a material temperature equation in a 1-D slab and 1-D spherical geometry binary random media are presented. The mixing statistics are taken to be homogeneous Markov statistics in the 1-D slab but only approximately Markov statistics in the 1-D sphere. The material chunk sizes are described by Poisson distribution functions. The material opacities are first taken to be constant and then allowed to vary as a strong function of material temperature. Benchmark values and variances for time evolution of the ensemble average of material temperature energy density and radiation transmission are computed via a Monte Carlo type method. These benchmarks are used as a basis for comparison with three other approximate methods of solution. One of these approximate methods is simple atomic mix. The second approximate model is an adaptation of what is commonly called the Levermore-Pomraning model and which is referred to here as the standard model. It is shown that recasting the temperature coupling as a type of effective scattering can be useful in formulating the third approximate model, an adaptation of a model due to Su and Pomraning which attempts to account for the effects of scattering in a stochastic …
Date: August 21, 2000
Creator: Miller, D. S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Binding of apolipoprotein E inhibits the oligomer growth of amyloid beta in solution as determined by fluorescence cross correlation spectroscopy (open access)

Binding of apolipoprotein E inhibits the oligomer growth of amyloid beta in solution as determined by fluorescence cross correlation spectroscopy

None
Date: August 21, 2012
Creator: Ly, S.; Altman, R.; Petrlova, J.; Lin, Y.; Huser, T.; Laurence, T. A. et al.
Object Type: Article
System: The UNT Digital Library
Blue and Green Light? Wavelength Scaling for NIF (open access)

Blue and Green Light? Wavelength Scaling for NIF

Use of the National Ignition Facility to also output frequency-doubled (.53{micro}m) laser light would allow significantly more energy to be delivered to targets as well as significantly greater bandwidth for beam smoothing. This green light option could provide access to new ICF target designs and a wider range of plasma conditions for other applications. The wavelength scaling of the interaction physics is a key issue in assessing this green light option. Wavelength scaling theory based on the collisionless plasma approximation is explored, and some limitations associated with plasma collisionality are examined. Important features of the wavelength scaling are tested using the current data base, which is growing. It appears that, with modest restrictions, .53{micro}m light couples with targets as well as .35{micro}m light does. A more quantitative understanding of the beneficial effects of SSD on the interaction physics is needed for both .53{micro}m and .35{micro}m light.
Date: August 21, 2003
Creator: Suter, L.; Miller, M.; Moody, J. & Kruer, W.
Object Type: Article
System: The UNT Digital Library
Bonding Low-density Nanoporous Metal Foams Using Sputtered Solder (open access)

Bonding Low-density Nanoporous Metal Foams Using Sputtered Solder

A method has been developed for bonding low-density nanoporous metal foam components to a substrate using solder that is sputtered onto the surfaces. Metal foams have unusual properties that make them excellent choices for many applications, and as technologies for processing these materials are evolving, their use in industry is increasing dramatically. Metal foams are lightweight and have advantageous dynamic properties, which make them excellent choices for many structural applications. They also provide good acoustic damping, low thermal conductivity, and excellent energy absorption characteristics. Therefore, these materials are commonly used in the automotive, aerospace, construction, and biomedical industries. The synthesis of nanoporous metal foams with a cell size of less then 1 {micro}m is an emerging technology that is expected to lead to widespread application of metal foams in microdevices, such as sensors and actuators. One of the challenges to manufacturing components from metal foams is that they can be difficult to attach to other structures without degrading their properties. For example, traditional liquid adhesives cannot be used because they are absorbed into foams. The problem of bonding or joining can be particularly difficult for small-scale devices made from nanoporous foam, due to the requirement for a thin bond layer. …
Date: August 21, 2007
Creator: Bono, M.; Cervantes, O.; Akaba, C.; Hamza, A.; Foreman, R. & Teslich, N.
Object Type: Article
System: The UNT Digital Library
The BTeV trigger architecture (open access)

The BTeV trigger architecture

BTeV is a high-statistics B-physics experiment that will achieve new levels of sensitivity in testing the Standard Model explanation of CP violation, mixing, and rare decays in the b and c quark systems by operating in the unique environment of a hadron collider. In order to achieve its goals, it will make use of a state-of-the-art Si-pixel vertex detector and a novel 3-level hierarchical trigger that will look at every single beam crossing to detect the presence of heavy quark decays. This talk will describe the trigger architecture focusing on key design aspects that allow the use of commercially available technology in a highly feasible and practical solution that meets the demanding physics requirements of the BTeV experiment.
Date: August 21, 2003
Creator: Wang, Michael H.L.S.
Object Type: Article
System: The UNT Digital Library
Burnup of Cadmium Decoupler Material in the Spallation Neutron Source Moderators (open access)

Burnup of Cadmium Decoupler Material in the Spallation Neutron Source Moderators

At the Spallation Neutron Source being constructed at Oak Ridge National Laboratory, power levels will be greater than at any other operating pulsed spallation neutron scattering facility. Some of the moderators at the facility will contain cadmium that will be used to tailor neutron time distributions by absorbing low-energy neutrons. Because of the higher operating power levels, indications are that there will be considerable burnup of this cadmium during the lifetime of the moderators. Cadmium burnup rates have been calculated for locations around the moderators. Assumed operating conditions for these calculations were a 2-mA beam of 1-GeV protons on the mercury target for 5,000 operating hours per year and a three-year lifetime for the moderators and inner-plug assembly. With the present proposed cadmium thickness in the moderator region (0.05 cm), Monte Carlo calculations indicate considerable depletion of the active cadmium isotope. In places, the calculations indicate complete depletion. An obvious solution to the problem would be to increase the cadmium thickness with a concomitant increase in heat load. Results from some cadmium heating calculations are also presented for a cadmium thickness of 0.05 cm.
Date: August 21, 2001
Creator: Murphy, BD
Object Type: Article
System: The UNT Digital Library