Resource Type

Language

Final Report: Imaging of Buried Nanoscale Optically Active Materials (open access)

Final Report: Imaging of Buried Nanoscale Optically Active Materials

This is a final report covering work done at University of Maryland to develop a Ballistic Electron Emission Luminescence (BEEL) microscope. This technique was intended to examine the carrier transport and photon emission in deeply buried optically-active layers and thereby provide a means for materials science to unmask the detailed consequences of experimentally controllable growth parameters, such as quantum dot size, statistics and orientation, and defect density and charge recombination pathways.
Date: July 5, 2011
Creator: Appelbaum, Ian
System: The UNT Digital Library
The United States and Europe: Current Issues (open access)

The United States and Europe: Current Issues

This report examines the current state of the transatlantic relationship and key issues that may have implications for U.S. interests during the 109th Congress.
Date: July 5, 2006
Creator: Archick, Kristin & Morelli, Vince L.
System: The UNT Digital Library
Questions Remain, Litigation Continues, over Military Service by Transgender Individuals (open access)

Questions Remain, Litigation Continues, over Military Service by Transgender Individuals

This report discusses the controversy regarding transgender individuals serving in the military, President Trump's memorandums on the subject, and the four lawsuits challenging the President's memorandums.
Date: July 5, 2018
Creator: Back, Christine J.
System: The UNT Digital Library
The Case for a 500 GeV e+e- Linear Collider (open access)

The Case for a 500 GeV e+e- Linear Collider

Several proposals are being developed around the world for an e+e- linear collider with an initial center of mass energy of 500 GeV. In this paper, we will discuss why a project of this type deserves priority as the next major initiative in high energy physics.
Date: July 5, 2000
Creator: Baggers, J.; Baltay, C.; Barker, T.; Barklow, T.; Bauer, U.; Bolton, T. et al.
System: The UNT Digital Library
Maximum Allowable Concentration for Air-Borne Beta Contamination (open access)

Maximum Allowable Concentration for Air-Borne Beta Contamination

The following report discusses an equation derived by which the maximum allowable concentration in the atmosphere of a beta-omitting isotope for which lung damage is the limiting consideration can be calculated.
Date: July 5, 1951
Creator: Bailey, J. C. & Henry, H. F.
System: The UNT Digital Library
Effect of increased electric loads on primary substation equipment in 100-B, C, D, DR, F, and H areas (open access)

Effect of increased electric loads on primary substation equipment in 100-B, C, D, DR, F, and H areas

The loading on the primary transformers which step down the 230 kv transmission voltage to a distribution voltage of 13.8 kv, at 100-B-C, 100-D-DR, 100-F, and 100-H Areas will be increased by the synchronous motors now being installed in those areas under Project CG-558. This report summarizes: The changes in electric loads (both kv and power factor) which will result when the new motors are placed in service and certain older motors are withdrawn from service. Electric loads are tabulated in section 4.0 for each area for present conditions, the planned changes and the post-CG-558 conditions. The reduction of distribution voltage during the starting of individual 4500 hp synchronous motors. Since the synchronous motors will be started across the line as induction motors, the starting current will be high, and at a low power factor. Voltage drops are calculated for the starting of a synchronous motor, with one and then with two transformer banks paralleled. The current-interrupting capacity of switchgear vs. the maximum short-circuit current which could occur with separate transformers and with two primary transformers in parallel.
Date: July 5, 1956
Creator: Baker, D. S. & McLenegan, D. W.
System: The UNT Digital Library
In-Home Performance of Exempt Pellet Stoves in Medford, Oregon. (open access)

In-Home Performance of Exempt Pellet Stoves in Medford, Oregon.

Pellet stoves that are considered exempt'' operate at an air-to-fuel ratio in excess of 35:1. They therefore qualify for exemption from the emissions certification process. A primary goal of this project was to determine how a sample of such stoves, operated in homes, would perform compared to their certified cousins,'' which were evaluated the previous year. In-home performance data documenting emissions from exempt stoves and net delivered efficiencies was particularly desired. This project evaluated six pellet stoves representing three major brands in Medford, Oregon. There were three Breckwell model P24FS, one Horizon Eclipse, one Horizon Destiny, and one Earth Stove TP40. The stoves were monitored for four week-long intervals in January and February 1991, for a total of 24 tests. Evaluations were conducted for particulate, CO (carbon monoxide) and PAH (polycyclic aromatic hydrocarbon) emissions and net efficiency. Monitoring was conducted using the AWES (automated woodstove emissions sampler) sampling system. A new data logger, developed for this project, was used to control the AWES and record real time data. 22 refs., 17 figs., 6 tabs.
Date: July 5, 1991
Creator: Barnett, Stockton G. & Fields, Paula G.
System: The UNT Digital Library
NATO's 2018 Brussels Summit (open access)

NATO's 2018 Brussels Summit

This report discusses the meeting of leaders from the North Atlantic Treaty Organization's (NATO's) 29 member states, scheduled to take place on hold a summit at NATO headquarters in Brussels, Belgium, on July 11-12, 2018. Despite the heightened U.S.-European tensions, NATO officials say they expect the allies to announce new NATO initiatives in six main areas at the summit: enhancing collective defense and deterrence, defense spending and burdensharing, countering terrorism, enhancing NATO cooperation with the European Union, and NATO enlargement.
Date: July 5, 2018
Creator: Belkin, Paul
System: The UNT Digital Library
All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD (open access)

All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD

We use on-shell recursion relations to compute analytically the one-loop corrections to maximally-helicity-violating n-gluon amplitudes in QCD. The cut-containing parts have been computed previously; our work supplies the remaining rational parts for these amplitudes, which contain two gluons of negative helicity and the rest positive, in an arbitrary color ordering. We also present formulae specific to the six-gluon cases, with helicities (-+-+++) and (-++-++), as well as numerical results for six, seven, and eight gluons. Our construction of the n-gluon amplitudes illustrates the relatively modest growth in complexity of the on-shell-recursive calculation as the number of external legs increases. These amplitudes add to the growing body of one-loop amplitudes known for all n, which are useful for studies of general properties of amplitudes, including their twistor-space structure.
Date: July 5, 2006
Creator: Berger, Carola F.; Bern, Zvi; Dixon, Lance J.; Forde, Darren & Kosower, David A.
System: The UNT Digital Library
Studies on Large Area Sub-Fabric Burns (open access)

Studies on Large Area Sub-Fabric Burns

The detonation of shot one at Bikini Atoll on March 1, 1954, produced a fallout of radioactive ash upon Rongelap Atoll, Marshall Islands. The distribution of the radioactive ash on the islands and in the plants and animals of the area has been studied and evaluated. During the first expedition to Rongelap Atoll on March 26, 1954, biological samples were collected and measurements made of the radiation contamination. On three additional expeditions extensive collections of material were made for this study, the last on January 25-30, 1955. The decline in radioactivity was measured in 1499 samples of fish, invertebrates, land plants, algae, birds, plankton, soil, and water from the Rongelap area. During this study particular emphasis was placed upon evaluation of the radioactivity in food used by the natives. Coconut milk collected on March 26, 1954, contained 1.03 microcuries per kilogram of wet tissue while the coconut meat had 1.16 mu c/kg. By January 25-30, 1955, the level in coconut milk had declined to 0.041 mu c/kg and the meat to 0.036 mu c/ kg. Fish muscle on March 26, 1954, averaged 2.74 mu c/kg and fish liver 204.0 mu c/kg. The decline to January 25-30 was 0.10 mu c/kg …
Date: July 5, 1957
Creator: Berkley, K. M. & Pearse, H. E.
System: The UNT Digital Library
Nuclear Waste Repository Siting: Expedited Procedures for Congressional Approval (open access)

Nuclear Waste Repository Siting: Expedited Procedures for Congressional Approval

None
Date: July 5, 2002
Creator: Beth, Richard S.
System: The UNT Digital Library
Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000 (open access)

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personnel dosimetry shall be provided to (1) radiological workers who are likely to receive at least 100 mrem annually, and (2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years 1993-2000 confirm that personnel dosimetry is not needed for individuals located in areas monitored by the program.
Date: July 5, 2001
Creator: Bivins, Steven R & Stoetzel, Gregory A
System: The UNT Digital Library
Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000 (open access)

Area Monitoring Dosimeter Program for the Pacific Northwest National Laboratory: Results for CY 2000

Pacific Northwest National Laboratory (PNNL) established an area monitoring dosimeter program in accordance with Article 514 of the Department of Energy (DOE) Radiological Control Manual (RCM) in January 1993. This program is to minimize the number of areas requiring issuance of personnel dosimeters and to demonstrate that doses outside Radiological Buffer Areas are negligible. In accordance with 10 CFR Part 835.402 (a) (1)-(4) and Article 511.1 of the DOE Standard Radiological Control, personnel dosimetry shall be provided to 1) radiological workers who are likely to receive at least 100 mrem annually, and 2) declared pregnant workers, minors, and members of the public who are likely to receive at least 50 mrem annually. Program results for calendar years 1993-2000 confirm that personnel dosimetry is not needed for individuals located in areas monitored by the program.
Date: July 5, 2001
Creator: Bivins, Steven R. & Stoetzel, Gregory A.
System: The UNT Digital Library
Final Technical Report - In-line Uranium Immunosensor (open access)

Final Technical Report - In-line Uranium Immunosensor

In this project, personnel at Tulane University and Sapidyne Instruments Inc. developed an in-line uranium immunosensor that could be used to determine the efficacy of specific in situ biostimulation approaches. This sensor was designed to operate autonomously over relatively long periods of time (2-10 days) and was able to provide near real-time data about uranium immobilization in the absence of personnel at the site of the biostimulation experiments. An alpha prototype of the in-line immmunosensor was delivered from Sapidyne Instruments to Tulane University in December of 2002 and a beta prototype was delivered in November of 2003. The beta prototype of this instrument (now available commercially from Sapidyne Instruments) was programmed to autonomously dilute standard uranium to final concentrations of 2.5 to 100 nM (0.6 to 24 ppb) in buffer containing a fluorescently labeled anti-uranium antibody and the uranium chelator, 2,9-dicarboxyl-1,10-phenanthroline. The assay limit of detection for hexavalent uranium was 5.8 nM or 1.38 ppb. This limit of detection is well below the drinking water standard of 30 ppb recently promulgated by the EPA. The assay showed excellent precision; the coefficients of variation (CV’s) in the linear range of the assay were less than 5% and CV’s never rose above …
Date: July 5, 2006
Creator: Blake, Diane A.
System: The UNT Digital Library
Abortion and Family Planning-Related Provisions in U.S. Foreign Assistance Law and Policy (open access)

Abortion and Family Planning-Related Provisions in U.S. Foreign Assistance Law and Policy

This report details legislation and policies that restrict or place requirements on U.S. funding of abortion or family planning activities abroad. The level and extent of federal funding for these activities is an ongoing and controversial issue in U.S. foreign assistance and will likely continue to be a point of contention during the second session of the 114th Congress.
Date: July 5, 2015
Creator: Blanchfield, Luisa
System: The UNT Digital Library
Iraq:  U.S. Military Operations (open access)

Iraq: U.S. Military Operations

Iraq’s chemical, biological, and nuclear weapons programs, together with Iraqi long-range missile development and support for al-Queda terrorism, were the primary justifications put forward for military action. On March 17, 2003, President Bush issued an ultimatum demanding that Saddam Hussein and his sons depart from Iraq within 48 hours. On March 19, offensive operations began with air strikes against Iraqi leadership positions. By April 15, after 27 days of operations, coalition forces were in relative control of all major Iraqi cities and Iraqi political and military leadership had disintegrated. On May 1, 2003, President Bush declared an end to major combat operations. There was no use of chemical or biological (CB)weapons, and no CB or nuclear weapons stockpiles or production facilities have been found.
Date: July 5, 2005
Creator: Bowman, Steven R.
System: The UNT Digital Library
Wildfires: CRS Experts (open access)

Wildfires: CRS Experts

The following table provides access to names and contact information for CRS experts on policy concerns relating to wildfires. Policy areas identified include federal wildfire policy; long-term land use management; federal firefighting assistance; federal emergency management policy; federal preparedness system and response plan; hazard mitigation; armed forces and national guard assistance; supplemental disaster funding; and disaster insurance.
Date: July 5, 2012
Creator: Bracmort, Kelsi
System: The UNT Digital Library
Control of Toxic Chemicals in Puget Sound, Phase 3: Study of Atmospheric Deposition of Air Toxics to the Surface of Puget Sound (open access)

Control of Toxic Chemicals in Puget Sound, Phase 3: Study of Atmospheric Deposition of Air Toxics to the Surface of Puget Sound

The results of the Phase 1 Toxics Loading study suggested that runoff from the land surface and atmospheric deposition directly to marine waters have resulted in considerable loads of contaminants to Puget Sound (Hart Crowser et al. 2007). The limited data available for atmospheric deposition fluxes throughout Puget Sound was recognized as a significant data gap. Therefore, this study provided more recent or first reported atmospheric deposition fluxes of PAHs, PBDEs, and select trace elements for Puget Sound. Samples representing bulk atmospheric deposition were collected during 2008 and 2009 at seven stations around Puget Sound spanning from Padilla Bay south to Nisqually River including Hood Canal and the Straits of Juan de Fuca. Revised annual loading estimates for atmospheric deposition to the waters of Puget Sound were calculated for each of the toxics and demonstrated an overall decrease in the atmospheric loading estimates except for polybrominated diphenyl ethers (PBDEs) and total mercury (THg). The median atmospheric deposition flux of total PBDE (7.0 ng/m2/d) was higher than that of the Hart Crowser (2007) Phase 1 estimate (2.0 ng/m2/d). The THg was not significantly different from the original estimates. The median atmospheric deposition flux for pyrogenic PAHs (34.2 ng/m2/d; without TCB) shows …
Date: July 5, 2010
Creator: Brandenberger, Jill M.; Louchouarn, Patrick; Kuo, Li-Jung; Crecelius, Eric A.; Cullinan, Valerie I.; Gill, Gary A. et al.
System: The UNT Digital Library
The Congressional Review Act: Determining Which "Rules" Must Be Submitted to Congress (open access)

The Congressional Review Act: Determining Which "Rules" Must Be Submitted to Congress

This report describes what types of agency actions can be overturned using the Congressional Review Act (CRA) by providing a close examination and discussion of the statutory definition of "rule." It also explains how Members can use the CRA to overturn agency rules that have not been submitted to Congress.
Date: July 5, 2018
Creator: Brannon, Valerie C. & Carey, Maeve P.
System: The UNT Digital Library
United Nations Peacekeeping: Issues for Congress (open access)

United Nations Peacekeeping: Issues for Congress

None
Date: July 5, 2006
Creator: Browne, Marjorie Ann
System: The UNT Digital Library
Characterization of fundamental catalytic properties of MoS2/WS2 nanotubes and nanoclusters for desulfurization catalysis - a surface temperature study (open access)

Characterization of fundamental catalytic properties of MoS2/WS2 nanotubes and nanoclusters for desulfurization catalysis - a surface temperature study

The prior project consisted of two main project lines. First, characterization of novel nanomaterials for hydrodesulfurization (HDS) applications. Second, studying more traditional model systems for HDS such as vapor-deposited silica-supported Mo and MoSx clusters. In the first subproject, we studied WS2 and MoS2 fullerene-like nanoparticles as well as WS2 nanotubes. Thiophene (C4H4S) was used as the probe molecule. Interestingly, metallic and sulfur-like adsorption sites could be identified on the silica-supported fullerene-particles system. Similar structures are seen for the traditional system (vapor-deposited clusters). Thus, this may be a kinetics fingerprint feature of modern HDS model systems. In addition, kinetics data allowed characterization of the different adsorption sites for thiophene on and inside WS2 nanotube bundles. The latter is a unique feature of nanotubes that has not been reported before for any inorganic nanotube system; however, examples are known for carbon nanotubes, including prior work of the PI. Although HDS has been studied for decades, utilizing nanotubes as nanosized HDS reactors has never been tried before, as far as we know. This is of interest from a fundamental perspective. Unfortunately, the HDS activity of the nanocatalysts at ultra-high vacuum (UHV) conditions was close to the detection limit of our techniques. Therefore, we …
Date: July 5, 2012
Creator: Burghaus, U.
System: The UNT Digital Library
Campaign Finance Bills in the 107th Congress: Comparison of S. 27 (McCain-Feingold), H.R. 2356 (Shays-Meehan), H.R. 2360 (Ney-Wynn), and Current Law (open access)

Campaign Finance Bills in the 107th Congress: Comparison of S. 27 (McCain-Feingold), H.R. 2356 (Shays-Meehan), H.R. 2360 (Ney-Wynn), and Current Law

This report summarizes and compares three major campaign finance reform bills before the 107th Congress and current law (in most cases, the Federal Election Campaign Act, or FECA, 2 U.S.C. § 431 et seq.).
Date: July 5, 2001
Creator: Cantor, Joseph E. & Whitaker, L. Paige
System: The UNT Digital Library
Mask locations in the SLC final focus region (open access)

Mask locations in the SLC final focus region

The location of four sets of masks needed to shield against background in the final focus region of the SLC is shown. The main point of this note is to update the results of Miller and Sens taking into account the recent changes that have been made in the optics of the SLC beams. For the latest beam design we use the TRANSPORT output dated 5-13-83. This design assumes that the final bends will form an S about the interaction point and that the final quadrupoles will be superconducting and will be placed about 8 feet from the interaction point.
Date: July 5, 1983
Creator: Cence, R. J.
System: The UNT Digital Library
A distributed activation energy model of heterogeneous coal ignition. Technical progress report, April 1-- June 30, 1995 (open access)

A distributed activation energy model of heterogeneous coal ignition. Technical progress report, April 1-- June 30, 1995

Experiments designed to measure kinetic rate constants of ignition of pulverized coals showed clearly that, for single particles or dilute suspensions, particle-to-particle variations due to reactivity and/or thermophysical properties are important. There exists ample evidence that the most important factor in interpreting these data is the existence of a variation in chemical reactivity in the sample. It is surprising, therefore, to note that all previous studies presumed that a single (average) activation energy is adequate to describe the ignition process. The equations formulated using this presumption are then correlated to the experimental measurements to infer the kinetic rate constants of ignition. The major objectives are to develop a model of heterogeneous ignition which allows for a distribution of activation energies, and to implement this model to interpret previously published data. It is the authors hypothesis that variations in chemical reactivity account for the experimental trends observed. Another objective of this project is to examine the effects of variations in thermodynamic and physical properties (e.g. specific heat, particle diameter, density) on data interpretation from previous ignition experiments. An attached paper submitted for review to ``Combustion and Flame`` summarizes the Distributed Activation Energy Model of Ignition, which accounts for particle-to-particle variations in …
Date: July 5, 1995
Creator: Chen, J. C.
System: The UNT Digital Library