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Office of Scientific & Technical Information Technical Reports
157
Congressional Research Service Reports
135
Technical Report Archive and Image Library
30
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27
National Advisory Committee for Aeronautics Collection
18
TRAIL Microcard Collection
7
Texas State Publications
2
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1
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353 Matching Results
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Final Technical Report
The purpose of this grant was to purchase equipment for biotechnology studies and courses at Saint Peter’s College (SPC). Equipment was used for courses such as Genetics and Biochemistry. The equipment helped SPC update its labs so as to create a better learning environment for our students.
Date:
April 21, 2009
Creator:
Petriello, Richard & Bonato, Frederick
System:
The UNT Digital Library
Studies with Colloids Containing Radioisotopes of Yttrium, Zirconium, Columbium and Lanthaum: 2. The Controlled Selective Localization of Radioisotopes of Yttrium, Zirconium, Columbium in the Bone Marrow, Liver and Spleen
Several workers have shown that certain colloidally dispered materials are removed from the blood stream by the liver and spleen. Jones, Wrobel, and Lyons have utilized suspensions of anhydrous chromic phosphate for the selective irradiation of the liver and spleen with p{sup 32} beta particles. Gersh demonstrated that colloidal calcium phosphate is taken up by the liver and spleen. He stressed the failure of bone marrow phagocytes to take up this colloid in rats and dogs (though he referred to possible uptake in the marrow of rabbits under special conditions), and commented on the relative 'refractoriness' in general of the bono marrow as compared with liver and spleen with respect to the uptake of colloidal dyes from the blood stream. Some histological data indicate that 'Thorotrast' (a colloidal thorium dioxide preparation) is deposited in the bone marrow as well as in the liver and spleen, but no quantitative data as to the relative distribution are available. In the preceding communication the methods for the preparation of colloids incorporating radioisotopes of yttrium, columbium, and zirconium were given. The present studies are concerned with the localization of such colloids primarily in the bone marrow or primarily in the spleen and liver, with …
Date:
April 21, 1948
Creator:
Dobson, E.L.; Gofman, J.W.; Jones, H.B.; Kelly, Lola S. & Walker, L.
System:
The UNT Digital Library
Final Technical Report
This report summarizes many of the projects, and lists all of the publications and persons trained with support from the grant.
Date:
April 21, 2011
Creator:
Herrin, David L.
System:
The UNT Digital Library
Annotated Bibliography for the DEWPOINT project
This bibliography covers aspects of the Detection and Early Warning of Proliferation from Online INdicators of Threat (DEWPOINT) project including 1) data management and querying, 2) baseline and advanced methods for classifying free text, and 3) algorithms to achieve the ultimate goal of inferring intent from free text sources. Metrics for assessing the quality and correctness of classification are addressed in the second group. Data management and querying include methods for efficiently storing, indexing, searching, and organizing the data we expect to operate on within the DEWPOINT project.
Date:
April 21, 2009
Creator:
Oehmen, Christopher S.
System:
The UNT Digital Library
Health Care for Veterans: Answers to Frequently Asked Questions
This report provides responses to frequently asked questions about health care provided to veterans through the Veterans Health Administration (VHA). It is intended to serve as a quick reference to provide easy access to information. Where applicable, it provides the legislative background pertaining to the question.
Date:
April 21, 2016
Creator:
Panangala, Sidath V.
System:
The UNT Digital Library
Congressional Nominations to U.S. Service Academies: An Overview and Resources for Outreach and Management
This report describes statutory requirements for allocating congressional nominations to service academies. It also identifies the qualifications that must be met by potential nominees, as established by statute and each academy.
Date:
April 21, 2016
Creator:
Petersen, R. E. & Eckman, Sarah J.
System:
The UNT Digital Library
Freedom of Information Act Legislation in the 114th Congress: Issue Summary and Side-by-Side Analysis
This report provides a side-by-side comparison of two bills relevant to the Freedom of Information Act (FOIA), using the versions that have passed each of their originating congressional chambers. The report also provides context related to bill amendments and language additions that occurred between bill versions, when applicable. Finally, the report provides analysis of certain provisions of the bills.
Date:
April 21, 2016
Creator:
Ginsberg, Wendy
System:
The UNT Digital Library
Basic Research Needs for Solar Energy Utilization. Report of the Basic Energy Sciences Workshop on Solar Energy Utilization, April 18-21, 2005
World demand for energy is projected to more than double by 2050 and to more than triple by the end of the century. Incremental improvements in existing energy networks will not be adequate to supply this demand in a sustainable way. Finding sufficient supplies of clean energy for the future is one of society?s most daunting challenges. Sunlight provides by far the largest of all carbon-neutral energy sources. More energy from sunlight strikes the Earth in one hour (4.3 ? 1020 J) than all the energy consumed on the planet in a year (4.1 ? 1020 J). We currently exploit this solar resource through solar electricity ? a $7.5 billion industry growing at a rate of 35?40% per annum ? and solar-derived fuel from biomass, which provides the primary energy source for over a billion people. Yet, in 2001, solar electricity provided less than 0.1% of the world's electricity, and solar fuel from modern (sustainable) biomass provided less than 1.5% of the world's energy. The huge gap between our present use of solar energy and its enormous undeveloped potential defines a grand challenge in energy research. Sunlight is a compelling solution to our need for clean, abundant sources of energy …
Date:
April 21, 2005
Creator:
Lewis, N. S.; Crabtree, G.; Nozik, A. J.; Wasielewski, M. R.; Alivisatos, P.; Kung, H. et al.
System:
The UNT Digital Library
Moduli Decays and Gravitinos
One proposed solution of the moduli problem of string cosmology requires that the moduli are quite heavy, their decays reheating the universe to temperatures above the scale of nucleosynthesis. In many of these scenarios, the moduli are approximately supersymmetric; it is then crucial that the decays to gravitinos are helicity suppressed. In this paper, we discuss situations where these decays are, and are not, suppressed. We also comment on a possible gravitino problem from inaton decay.
Date:
April 21, 2006
Creator:
Dine, Michael; Kitano, Ryuichiro; Morisse, Alexander & Shirman, Yuri
System:
The UNT Digital Library
SALTSTONE 3QCY08 TCLP RESULTS
A Saltstone waste form was prepared in the Savannah River National Laboratory from a Tank 50H sample and Z-Area premix material for the third quarter of calendar year 2008 (3QCY08). After the prescribed 28 day cure, samples of the saltstone were collected, and the waste form was shown to meet the South Carolina Hazardous Waste Management Regulations (SCHWMR) R.61-79.261.24 and R.61-79.268.48(a) requirements for a nonhazardous waste form with respect to RCRA metals and underlying hazardous constituents. These analyses met all quality assurance specifications of USEPA SW-846.
Date:
April 21, 2009
Creator:
Cozzi, A.
System:
The UNT Digital Library
An Improved Coal Liquefaction Process
Short Residence Time & Low and High Shear Rate Coal and Oil Feedstock Test
Date:
April 21, 2003
Creator:
Lee, Theo Lap-Keung
System:
The UNT Digital Library
Application of the Recent ARF1 Calibration Measurements to the Pbar RF Curve Loading Console Application (P2)
The P2 console application (Antiproton Source RF Files) calculates frequency and voltage curves from a sequence of command statements input by the user. P2 initially calculates these curves in terms of the actual frequencies and voltages required on the RF cavity as a function of time. These curves are then converted to the appropriate low-level drive voltages that will cause the RF system high-level electronics to generate the required frequency and voltage ramps. The low-level drive ramps are then downloaded into CAMAC ramp cards. In order to convert the required cavity voltage and frequency into the correct drive voltages P2 uses a set of constants that determined from calibration measurements of the various Antiproton Source RF systems. These constants are editable from the P2 constants window. The P2 constants at the time of this writing are shown in Figure 1. The validity of these constants determines the extent to which P2 able to translate the user's commands into the actual voltages and frequencies that appear on the RF cavity. A comparison of the 4/18/2001 calibration of ARF1 with that presently assumed by P2 shows a large discrepancy in both the frequency constants and the voltage constants. This report documents the …
Date:
April 21, 2001
Creator:
Werkema, Steve
System:
The UNT Digital Library
SciDAC's Earth System Grid Center for Enabling Technologies Semi-Annual Progress Report for the Period October 1, 2009 through March 31, 2010
This report summarizes work carried out by the ESG-CET during the period October 1, 2009 through March 31, 2009. It includes discussion of highlights, overall progress, period goals, collaborations, papers, and presentations. To learn more about our project, and to find previous reports, please visit the Earth System Grid Center for Enabling Technologies (ESG-CET) website. This report will be forwarded to the DOE SciDAC program management, the Office of Biological and Environmental Research (OBER) program management, national and international collaborators and stakeholders (e.g., the Community Climate System Model (CCSM), the Intergovernmental Panel on Climate Change (IPCC) 5th Assessment Report (AR5), the Climate Science Computational End Station (CCES), the SciDAC II: A Scalable and Extensible Earth System Model for Climate Change Science, the North American Regional Climate Change Assessment Program (NARCCAP), and other wide-ranging climate model evaluation activities).
Date:
April 21, 2010
Creator:
Williams, D. N.; Foster, I. T.; Middleton, D. E.; Ananthakrishnan, R.; Siebenlist, F.; Shoshani, A. et al.
System:
The UNT Digital Library
High Pressure Burn Rate Measurements on an Ammonium Perchlorate Propellant
High pressure deflagration rate measurements of a unique ammonium perchlorate (AP) based propellant are required to design the base burn motor for a Raytheon weapon system. The results of these deflagration rate measurements will be key in assessing safety and performance of the system. In particular, the system may experience transient pressures on the order of 100's of MPa (10's kPSI). Previous studies on similar AP based materials demonstrate that low pressure (e.g. P < 10 MPa or 1500 PSI) burn rates can be quite different than the elevated pressure deflagration rate measurements (see References and HPP results discussed herein), hence elevated pressure measurements are necessary in order understand the deflagration behavior under relevant conditions. Previous work on explosives have shown that at 100's of MPa some explosives will transition from a laminar burn mechanism to a convective burn mechanism in a process termed deconsolidative burning. The resulting burn rates that are orders-of-magnitude faster than the laminar burn rates. Materials that transition to the deconsolidative-convective burn mechanism at elevated pressures have been shown to be considerably more violent in confined heating experiments (i.e. cook-off scenarios). The mechanisms of propellant and explosive deflagration are extremely complex and include both chemical, and …
Date:
April 21, 2010
Creator:
Glascoe, E A & Tan, N
System:
The UNT Digital Library
Pitchblende Processing Filtration Data. Engineering B Data Progress Report I for April 3-14, 1945
None
Date:
April 21, 1945
Creator:
Miller, E.
System:
The UNT Digital Library
A Study of the Error Involved in the Near Use of a Radio Interferometer
From abstract: This paper presents the results of a study of the error in radio interferometer measurements of near sources attributable to the use of asymptotic formulae, valid for distant targets.
Date:
April 21, 1959
Creator:
Simmons, Gustavus J.
System:
The UNT Digital Library
EFFECTS OF IRRADIATION ON STAINLESS STEEL-CLAD UO$sup 2$ PELLETS IN HELIUM OR CARBON DIOXIDE
Uranium dioxide pellets sealed in Type 316 stainless steel containers with a helium gas were irradiated in helium and in C0/sub 2/ in thermal fluxes or the order of 1 x 10/sup 13/ n/(cm/sup 2/)(sec). Cladding-surface temperatures were reportedly between 1200 and about 1800 F. The hot-cell examination performed by BMI showed that there were no obvious effects of the irradiation on the specimen tested in helium. However, the specimen irradiated in the presence of C0/sub 2/ exhibited severe cladding-CO/sub 2/ reaction and possible central melting of the UO/sub 2/. Although comparisons between pre- and postirradiation data were difficult because of involved fabrication history of the specimens, the tests did further establish the fact that helium is a satisfactory coolant gas for stainless steel cladding material at a temperature of 1200 F. The data obtained from the specimen tested in the presence of C0/sub 2/ indicate that at temperatures in the range of 1600 to 1800 F Type 316 stainless steel is not compatible with C0/sub 2/. (auth)
Date:
April 21, 1959
Creator:
Lamale, G.E.; Gates, J.E. & Dickerson, R.F.
System:
The UNT Digital Library
Purification of Uranium Oxide
None
Date:
April 21, 1942
Creator:
Hoffman, J.I.
System:
The UNT Digital Library
512-S Facility, Actinide Removal Process Radiological Design Summary Report
This report contains top-level requirements for the various areas of radiological protection for workers. Detailed quotations of the requirements for applicable regulatory documents can be found in the Radiological Design Summary Report Implementation Guide. For the purposes of demonstrating compliance with these requirements, per Engineering Standard 01064, ''shall consider / shall evaluate'' indicates that the designer must examine the requirement for the design and either incorporate or provide a technical justification as to why the requirement is not incorporated. This report describes how the Building 512-S, Actinide Removal Process meets the required radiological design criteria and requirements based on 10CFR835, DOE Order 420.1A, WSRC Manual 5Q and various other DOE guides and handbooks. The analyses supporting this Radiological Design Summary Report initially used a source term of 10.6 Ci/gallon of Cs-137 as the basis for bulk shielding calculations. As the project evolved, the source term was reduced to 1.1 Ci/gallon of Cs-137. This latter source term forms the basis for later dose rate evaluations.
Date:
April 21, 2004
Creator:
Nathan, S.J.
System:
The UNT Digital Library
Final Report - The Xanthophyll Cycle
The xanthophyll cycle is a ubiquitous activity in higher plants. A major function of the cycle is to protect the photosynthetic system from the potentially damaging effects of high light by dissipating excess energy that might otherwise damage the photosynthetic apparatus harmlessly as heat by a process termed non-photochemical quenching (NFQ). This research focused on investigating the dynamics of the relationship between PsbS, subunit PSII protein required for NPQ, and zeaxanthin by perturbing the natural relationship of these components by overexpression of PsbS, violaxanthin de-epoxidase (VDE), and PsbS-VDE in tobacco. The effects of these treatments showed that the relationship between NPQ and zeaxanthin formation is more complex than previously indicated from studies carried out under high light. It is postulated that the xanthophyll cycle functions as a type of signal-transduction system within the thylakoid membrane. Recent studies in model lipid systems demonstrated that zeaxanthin exerts feedback inhibition on violaxanthin de-epoxidase. This feedback inhibition is consistent with the lipid phase functioning as a modulating factor in the dynamics of the cycle's operation. While this research and those in other laboratories have defined both the biochemistry and molecular mechanism of the cycle's operation, especially for violaxanthin de-epoxidase, there is yet insufficient knowledge …
Date:
April 21, 2005
Creator:
Yamamato, Harry
System:
The UNT Digital Library
NONEQUILIBRIUM SULFUR CAPTURE & RETENTION IN AN AIR COOLED SLAGGING COAL COMBUSTOR
Calcium oxide injected in a slagging combustor reacts with the sulfur from coal combustion to form sulfur-bearing particles. The reacted particles impact and melt in the liquid slag layer on the combustor wall by the centrifugal force of the swirling combustion gases. Due to the low solubility of sulfur in slag, it must be rapidly drained from the combustor to limit sulfur gas re-evolution. Prior analyses and laboratory scale data indicated that for Coal Tech's 20 MMBtu/hour, air-cooled, slagging coal combustor slag mass flow rates in excess of 400 lb/hr should limit sulfur re-evolution. The objective of this 42-month project was to validate this sulfur-in-slag model in a group of combustor tests. A total of 36 days of testing on the combustor were completed during the period of performance of this project. This was more that double the 16 test days that were required in the original work statement. The extra tests were made possible by cost saving innovations that were made in the operation of the combustor test facility and in additional investment of Coal Tech resources in the test effort. The original project plan called for two groups of tests. The first group of tests involved the injection …
Date:
April 21, 2003
Creator:
Zauderer, Bert
System:
The UNT Digital Library
Booster synchrotron frequency below transition
The dipole mode synchrotron frequency is a basic beam parameter; it and a few similarly basic quantities measured at small time intervals serve to characterize the longitudinal beam dynamics throughout the acceleration cycle. The effective accelerating voltage, in conjunction with the amount of rf voltage required for the acceleration, is important for the estimate of the beam energy loss per turn. The dipole mode frequency can be used to obtain the effective accelerating rf voltage, providing that it can be measured precisely. The synchrotron frequency measured from the synchrotron phase detector signal (SPD) generally agrees well with calculation, and it can be applied for such purposes as inferring the effective rf voltage.
Date:
April 21, 2004
Creator:
al., Xi Yang et
System:
The UNT Digital Library
Final Report for DOE Grant No. DE-FG02-02ER83460
The goals of the phase I program were to enhance the software package ''CyberRay'' as follows: (1) Incorporate a particle-in-cell space charge model; (2) Incorporate a model for transition radiation; (3) Develop versions for both Microsoft Windows and Macintosh OS X operating systems; and (4) Incorporate support for dual processors. The program was very successful. The space charge model, transition radiation model, and support for two operating systems were fully implemented resulting in a unique product useful to both the accelerator and laser communities. Support for dual processors was not implemented during the phase I program due to lack of time. In what follows the enhanced CyberRay package is described in detail.
Date:
April 21, 2003
Creator:
Gordon, Daniel & Hafizi, Bahman
System:
The UNT Digital Library
Diesel hybridization and emissions.
The CTR Vehicle Systems and Fuels team a diesel hybrid powertrain. The goal of this experiment was to investigate and demonstrate the potential of diesel engines for hybrid electric vehicles (HEVs) in a fuel economy and emissions. The test set-up consisted of a diesel engine coupled to an electric motor driving a Continuously Variable Transmission (CVT). This hybrid drive is connected to a dynamometer and a DC electrical power source creating a vehicle context by combining advanced computer models and emulation techniques. The experiment focuses on the impact of the hybrid control strategy on fuel economy and emissions-in particular, nitrogen oxides (NO{sub x}) and particulate matter (PM). The same hardware and test procedure were used throughout the entire experiment to assess the impact of different control approaches.
Date:
April 21, 2004
Creator:
Pasquier, M. & Monnet, G.
System:
The UNT Digital Library