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Office of Scientific & Technical Information Technical Reports
229
Congressional Research Service Reports
106
Texas Patents
40
Texas Attorney General Opinions
39
Technical Report Archive and Image Library
21
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18
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16
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11
Texas Register
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81st Legislature of Texas
10
Texas Register
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Atomic Energy Commission Reports
7
House Concurrent Resolutions
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NACA Research Memorandums
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Senate Concurrent Resolutions
5
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4
San Antonio Board of Adjustment Monthly Report
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494 Matching Results
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Sugar Policy Actions Since The Expiration Of The Sugar Act
This report consists of sugar policy actions since the expiration of the sugar act.
Date:
April 3, 1978
Creator:
A. Ellen Terpstra
Object Type:
Report
System:
The UNT Digital Library
The ATLAS level 2 trigger supervisor.
This paper presents an overview of the hardware and software proposed for the ATLAS level 2 Trigger ROI Builder/Supervisor. The essential requirements of this system are that it operate at the design Level 1 Trigger rate of 100kHz and that it support the technical requirements of the architectures suggested for the ATLAS Level 2 Trigger. Commercial equipment and software support are used to the maximum extent possible, with support from dedicated hardware. Timing requirements and latencies are discussed and simulation results are presented.
Date:
April 3, 1997
Creator:
Abolins, M.; Blair, R. E.; Dawson, J. W.; Owen, D.; Pope, B. G.; Schlereth, J. L. et al.
Object Type:
Article
System:
The UNT Digital Library
2006 Electrochemistry Gordon Research Conference - February 12-17-2006
This report is a descriptive journey of 2006 Electrochemistry Gordon Research Conference.
Date:
April 3, 2007
Creator:
Abruna, Hector D.
Object Type:
Article
System:
The UNT Digital Library
Flushing Apparatus.
Patent for a flushing apparatus to be used to flush tanks that are normally kept empty. It is also "an improved siphon for emptying the tank, and also an improved mechanism for starting the siphon" (lines 22-24).
Date:
April 3, 1894
Creator:
Ackley, George D.
Object Type:
Patent
System:
The Portal to Texas History
Tile-Machine.
Patent for a tile pipe molder that "expeditiously and cheaply make subirrigating pipe right at the side of the ditch where it is to be laid" (lines 10-13).
Date:
April 3, 1894
Creator:
Adamson, John
Object Type:
Patent
System:
The Portal to Texas History
Persistent Patterns in Accretion Disks
We present a set of new characteristic frequencies associated with accretion disks around compact objects. These frequencies arise from persistent rotating patterns in the disk that are finite in radial extent and driven purely by the gravity of the central body. Their existence depends on general relativistic corrections to orbital motion and, if observed, could be used to probe the strong gravity region around a black hole. We also discuss a possible connection to the puzzle of quasi-periodic oscillations.
Date:
April 3, 2006
Creator:
Amin, Mustafa A.; Frolov, Andrei V. & /KIPAC, Menlo Park
Object Type:
Report
System:
The UNT Digital Library
Grading Apparatus.
Patent for improvements in grading apparatus to make it "comparatively simple and inexpensive in construction" (line 10) and readily adjustable.
Date:
April 3, 1917
Creator:
Anderson, Lycurgus
Object Type:
Patent
System:
The Portal to Texas History
Development of Proof-of-Concept Units for the Advanced Medium-Sized Mobile Power Sources (AMMPS) Program
The purpose of this report is to document the development of the proof-of-concept units within the Advanced Medium-sized Mobile Power Sources (AMMPS) program. The design used a small, lightweight diesel engine, a permanent magnet alternator, power electronics and digital controls as outlined in the philosophy detailed previously. One small proof-of-concept unit was completed and delivered to the military. The unit functioned well but was not optimized at the time of delivery to the military. A tremendous amount of experience was gained during this phase that can be used in the development of any follow-on AMMPS production systems. Lessons learned and recommendations for follow-on specifications are provided. The unit demonstrated that significant benefits are possible with the new design philosophy. Trade-offs will have to be made but many of the advantages appear to be within the technical grasp of the market.
Date:
April 3, 2002
Creator:
Andriulli, JB
Object Type:
Report
System:
The UNT Digital Library
Baling-Press.
Patent for "certain new and useful improvements in baling-presses." (Lines 5-6) Illustrations are included.
Date:
April 3, 1888
Creator:
Archer, Roger W.
Object Type:
Patent
System:
The Portal to Texas History
Prevention of Reservoir Interior Discoloration
Contamination is anathema in reservoir production. Some of the contamination is a result of welding and some appears after welding but existed before. Oxygen was documented to be a major contributor to discoloration in welding. This study demonstrates that it can be controlled and that some of the informal cleaning processes contribute to contamination.
Date:
April 3, 2001
Creator:
Arnold, K. F.
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Radiation Measurement Program Facilities Newsletter, March 2000
Monthly newsletter discussing news and activities related to the Atmospheric Radiation Measurement Program, articles about weather and atmospheric phenomena, and other related topics.
Date:
April 3, 2000
Creator:
Atmospheric Radiation Measurement Program (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Science & Technology Review May 2006
This month's issue has the following articles: (1) Science and Technology Help the Nation Counter Terrorism--Commentary by Raymond J. Juzaitis; (2) Imagers Provide Eyes to See Gamma Rays--Gamma-ray imagers provide increased radiation detection capabilities and enhance the nation's arsenal for homeland security; (3) Protecting the Nation's Livestock--Foot-and-mouth disease could devastate America's livestock; a new assay provides a rapid means to detect it; (4) Measures for Measures--Laboratory physicists combine emissivity and reflectivity to achieve highly accurate temperature measurements of metal foils; and (5) Looping through the Lamb Shift--Livermore scientists measured a small perturbation in the spectra of highly ionized uranium--the first measurement of the two-loop Lamb shift in a bound state.
Date:
April 3, 2006
Creator:
Aufderheide, M. B., III
Object Type:
Report
System:
The UNT Digital Library
Design Compliance Matrices to ANSI and OSHA
U.S. Department of Energy Letter 98-SFD-028 requested Fluor Daniel Hanford, Inc. to provide clarifications as to compliance with ANSI 57.1, 57.2, 57.9, and 29 CFR 1910.179 (OSHA), in the form of an item-by-item compliance matrix, for the CSB. This Supporting Document contains Fluor Daniel, Inc.'s response for use by Fluor Daniel Hanford, Inc. regarding the clarifications requested by the U.S. Department of Energy.
Date:
April 3, 2000
Creator:
BENDIXSEN, R.B.
Object Type:
Report
System:
The UNT Digital Library
Raman Shift of Stressed Diamond Anvils: Pressure Calibration and Culet Geometry Dependence
The pressure dependence of the Raman shift of diamond for highly stressed anvils at the diamond-anvil sample interface has been measured for different culet shapes up to 180 GPa at ambient temperature. By using hydrogen samples, which constitute both a quasi-hydrostatic medium and a sensitive pressure sensor, some of the effects of culet and tip size have been determined. We propose that the divergent results in the literature can be partly ascribed to different anvil geometries. Experiments show increasing second order dependence of the diamond Raman shift with pressure for decreasing tip size. This is an important consideration when using the diamond anvils as a pressure sensor.
Date:
April 3, 2008
Creator:
Baer, B. J.; Chang, M. E. & Evans, W. J.
Object Type:
Article
System:
The UNT Digital Library
PSLQ: An Algorithm to Discover Integer Relations
Let x = (x{sub 1}, x{sub 2} {hor_ellipsis}, x{sub n}) be a vector of real or complex numbers. x is said to possess an integer relation if there exist integers a{sub i}, not all zero, such that a{sub 1}x{sub 1} + a{sub 2}x{sub 2} + {hor_ellipsis} + a{sub n}x{sub n} = 0. By an integer relation algorithm, we mean a practical computational scheme that can recover the vector of integers ai, if it exists, or can produce bounds within which no integer relation exists. As we will see in the examples below, an integer relation algorithm can be used to recognize a computed constant in terms of a formula involving known constants, or to discover an underlying relation between quantities that can be computed to high precision. At the present time, the most effective algorithm for integer relation detection is the 'PSLQ' algorithm of mathematician-sculptor Helaman Ferguson [10, 4]. Some efficient 'multi-level' implementations of PSLQ, as well as a variant of PSLQ that is well-suited for highly parallel computer systems, are given in [4]. PSLQ constructs a sequence of integer-valued matrices B{sub n} that reduces the vector y = xB{sub n}, until either the relation is found (as one of …
Date:
April 3, 2009
Creator:
Bailey, David H. & Borwein, J. M.
Object Type:
Report
System:
The UNT Digital Library
Plug-In Hybrid Electric Vehicle Penetration Scenarios
This report examines the economic drivers, technology constraints, and market potential for plug-in hybrid electric vehicles (PHEVs) in the U.S. A PHEV is a hybrid vehicle with batteries that can be recharged by connecting to the grid and an internal combustion engine that can be activated when batteries need recharging. The report presents and examines a series of PHEV market penetration scenarios. Based on input received from technical experts and industry representative contacted for this report and data obtained through a literature review, annual market penetration rates for PHEVs are presented from 2013 through 2045 for three scenarios. Each scenario is examined and implications for PHEV development are explored.
Date:
April 3, 2008
Creator:
Balducci, Patrick J.
Object Type:
Report
System:
The UNT Digital Library
Acid Formation in the Radiolysis of Phosphorus Esters
The radiolytic decomposition of tributyl phosphate has been show by burr to product gases, acids, and polymers. the acids that are formed can limit the usefulness of tributyl phosphate for the processing of radioactive materials. The study of acid formation on radiolysis therefor becomes important to us for the understanding of the mechanism of acid formation, the influence of added materials and the effect of the structure of organo- phosphorous compounds. Samples of purified esters have been irradiated in the ORNL cobalt source. Conclusions: (1) The formation of acid from tributyl phosphate during irradiation with cobalt gamma rays involves a mechanism that is not a primary step. Evidence has been obtained for a secondary reaction that is minimized by the presence of certain compounds. (2) Toluene acting as an inhibitor for radiolytic formation of acid may indicate the usefulness of an aromatic hydrocarbon diluent in processing. (3) The aromatic hydrocarbon, when phenyl, was not effective when it was part of the molecule. (4) First tests revealed that dibutyl butyl-phosphonate produced less acid the TBP and may warrant further consideration for process application.
Date:
April 3, 1957
Creator:
Baldwin, W. H.
Object Type:
Report
System:
The UNT Digital Library
Cellulose and cellobiose: adventures of a wandering organic chemist in theoretical chemistry
The energies arising from the rotation of free hydroxyl groups in the central glucose residue of a cellulose crystalline assembly, calculated using RHF, DFT, and FMO2/MP2 methods, will be presented. In addition, interactions of this central glucose residue with some of the surrounding residues (selected on the basis of the interaction strengths) are analyzed. The mechanism of acid-catalyzed hydrolysis of cellobiose, which is the repeating unit of cellulose. Energies corresponding to the different steps of this mechanism calculated using RHF and DFT are compared with those previously reported using molecular dynamics calculations and with experimental data.
Date:
April 3, 2012
Creator:
Baluyut, John
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Strategic Petroleum Reserve: History, Perspectives, and Issues
None
Date:
April 3, 2006
Creator:
Bamberger, Robert L.
Object Type:
Report
System:
The UNT Digital Library
The Strategic Petroleum Reserve: History, Perspectives, and Issues
None
Date:
April 3, 2006
Creator:
Bamberger, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Trade Law: An Introduction to Selected International Agreements and U.S. Laws
This report is an introductory overview of the legal framework governing trade-related measures. The agreements and laws selected for discussion are those most commonly implicated by U.S. trade interests, but there are U.S. trade laws and obligations beyond those reviewed in this report.
Date:
April 3, 2012
Creator:
Barbour, Emily C.
Object Type:
Report
System:
The UNT Digital Library
ChaMP Serendipitous Galaxy Cluster Survey
We present a survey of serendipitous extended X-ray sources and optical cluster candidates from the Chandra Multi-wavelength Project (ChaMP). Our main goal is to make an unbiased comparison of X-ray and optical cluster detection methods. In 130 archival Chandra pointings covering 13 square degrees, we use a wavelet decomposition technique to detect 55 extended sources, of which 6 are nearby single galaxies. Our X-ray cluster catalog reaches a typical flux limit of about {approx} 10{sup -14} erg s{sup -1} cm{sup -2}, with a median cluster core radius of 21''. For 56 of the 130 X-ray fields, we use the ChaMP's deep NOAO/4m MOSAIC g', r', and i' imaging to independently detect cluster candidates using a Voronoi tessellation and percolation (VTP) method. Red-sequence filtering decreases the galaxy fore/background contamination and provides photometric redshifts to z {approx} 0.7. From the overlapping 6.1 square degree X-ray/optical imaging, we find 115 optical clusters (of which 11% are in the X-ray catalog) and 28 X-ray clusters (of which 46% are in the optical VTP catalog). The median redshift of the 13 X-ray/optical clusters is 0.41, and their median X-ray luminosity (0.5-2 keV) is L{sub X} = (2.65 {+-} 0.19) x 10{sup 43} ergs s{sup -1}. …
Date:
April 3, 2006
Creator:
Barkhouse, Wayne A.; Green, P. J.; Vikhlinin, A.; Kim, D.-W.; Perley, D.; Cameron, R. et al.
Object Type:
Report
System:
The UNT Digital Library
Intelligent Software Tools for Advanced Computing
Feature extraction and evaluation are two procedures common to the development of any pattern recognition application. These features are the primary pieces of information which are used to train the pattern recognition tool, whether that tool is a neural network, a fuzzy logic rulebase, or a genetic algorithm. Careful selection of the features to be used by the pattern recognition tool can significantly streamline the overall development and training of the solution for the pattern recognition application. This report summarizes the development of an integrated, computer-based software package called the Feature Extraction Toolbox (FET), which can be used for the development and deployment of solutions to generic pattern recognition problems. This toolbox integrates a number of software techniques for signal processing, feature extraction and evaluation, and pattern recognition, all under a single, user-friendly development environment. The toolbox has been developed to run on a laptop computer, so that it may be taken to a site and used to develop pattern recognition applications in the field. A prototype version of this toolbox has been completed and is currently being used for applications development on several projects in support of the Department of Energy.
Date:
April 3, 2001
Creator:
Baumgart, C.W.
Object Type:
Report
System:
The UNT Digital Library
Ring Walking/Oxidative Addition Reactions for the Controlled Synthesis of Conjugated Polymers
Power conversion efficiencies of plastic solar cells depend strongly on the molecular weight characteristics of the semiconducting polymers used for their fabrication. The synthesis of these materials typically relies on transition metal mediated catalytic reactions. In many instances, the ideal structures cannot be attained because of deficiencies in these reactions, particularly when it comes to being able to achieve high number average molecular weights and narrow molecular weight distributions. Another important conjugated polymer structure of interest is one in which a single functional group is attached at the end group of the chain. Such systems would be ideal for modifying surface properties at interfaces and for labeling biomolecular probes used in fluorescent biosensors. To respond to the challenges above, our efforts have centered on the design of homogenous transition metal complexes that are easy to prepare and effective in carrying out living, or quasi-living, condensative chain polymerization reactions. The key mechanistic challenge for the success of this reaction is to force the insertion of one monomer unit at a time via a process that involves migration of the transition metal-containing fragment to one terminus of the polymer chain. Chain growth characteristics are therefore favored when the metal does not dissociate …
Date:
April 3, 2012
Creator:
Bazan, Guillermo C
Object Type:
Report
System:
The UNT Digital Library