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Office of Scientific & Technical Information Technical Reports
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1,358
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604
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495
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418
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326
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323
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227
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184
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7,177 Matching Results
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Emergency Rail-Brake.
Patent for "a new and improved emergency rail-brake" (lines 1-5).
Date:
January 16, 1906
Creator:
Adams, Powell O.
Object Type:
Patent
System:
The Portal to Texas History
Analytic pulsar models
An analytic and fully general relativistic solution to Einstein's field equations is given. This analytic model of a slowly rotating neutron star can describe differentially as well as uniformly rotating stars. (auth)
Date:
January 16, 1974
Creator:
Adams, R.C.; Cohen, J.M.; Adler, R.J. & Sheffield, C.
Object Type:
Report
System:
The UNT Digital Library
Studies of the Transformations of Sulfur Containing Heterocycles by Transition Metal Cluster Compounds. Final Report, June 1, 1995 - October 31, 1999
Report on results of research on the catalytic macrocyclization reactions of thietane and thiolactones by metal carbonyl complexes.
Date:
May 16, 2001
Creator:
Adams, Richard D.
Object Type:
Report
System:
The UNT Digital Library
Lebanon: Background and U.S. Relations. December 2008
This report provides an overview of Lebanese politics, recent events in Lebanon, and current issues in U.S. - Lebanon relations.
Date:
December 16, 2008
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
International Symposium on Systems and Human Science - SSR2005
None
Date:
March 16, 2005
Creator:
Addison, K J
Object Type:
Article
System:
The UNT Digital Library
Can-Opener.
Patent for new and useful improvements for can openers. The principal purpose is to provide means for opening round cans of different sizes and also square cans.
Date:
November 16, 1920
Creator:
Adels, Rebecca Valencia.
Object Type:
Patent
System:
The Portal to Texas History
First Results From the Electron Hose Instability Studies in FACET
None
Date:
October 16, 2013
Creator:
Adli, E.; Corde, S.; England, R. J.; Frederico, J.; Gessner, S. J.; Li, S. et al.
Object Type:
Article
System:
The UNT Digital Library
Factory Acceptance Test Procedure Westinghouse 100 ton Hydraulic Trailer
This Factory Acceptance Test Procedure (FAT) is for the Westinghouse 100 Ton Hydraulic Trailer. The trailer will be used for the removal of the 101-SY pump. This procedure includes: safety check and safety procedures; pre-operation check out; startup; leveling trailer; functional/proofload test; proofload testing; and rolling load test.
Date:
November 16, 1994
Creator:
Aftanas, B. L.
Object Type:
Report
System:
The UNT Digital Library
Securing collaborative environments
The diverse set of organizations and software components involved in a typical collaboratory make providing a seamless security solution difficult. In addition, the users need support for a broad range of frequency and locations for access to the collaboratory. A collaboratory security solution needs to be robust enough to ensure that valid participants are not denied access because of its failure. There are many tools that can be applied to the task of securing collaborative environments and these include public key infrastructure, secure sockets layer, Kerberos, virtual and real private networks, grid security infrastructure, and username/password. A combination of these mechanisms can provide effective secure collaboration capabilities. In this paper, we discuss the requirements of typical collaboratories and some proposals for applying various security mechanisms to collaborative environments.
Date:
May 16, 2002
Creator:
Agarwal, Deborah; Jackson, Keith & Thompson, Mary
Object Type:
Article
System:
The UNT Digital Library
Brief Backgrounder on Mineral Commodities in the U.S. Stockpile, 1975
This report is about the mineral commodities in the U.S stockpile for the year 1975.
Date:
May 16, 1975
Creator:
Agnew, Allen F.
Object Type:
Report
System:
The UNT Digital Library
Noise Performance Evaluation of the Candidate Digitizers for the MAJORANA DEMONSTRATOR
The noise performance evaluation of the two digitizer cards being considered for the MAJORANA DEMONSTRATOR (MJD) is presented in this document. The procurement of the data acquisition electronics for the MJD is scheduled to happen this year. At the time of writing this document, there are two candidate digitizer electronic boards. One aspect that is being considered by the collaboration is the feasibility of using the MJD for dark matter searches. The feasibility of using the MJD for this application is going to be dictated by the ability of the demonstrator to reach sub-keV energy resolution. One of the potential sources of noise in the MJD is the data acquisition system. This document will is concluded with a recommendation for the final digitizer board by comparing the noise performance of the two electronics systems. Noise parameters such as the effective number of bits, input range linearity and signal to noise ratio are experimentally determined. The two digitizer cards feature different on-board digital signal processing and these features are compared. The experimental set-up was also used to identify sources of noise. This paper describes these sources of noise in the data acquisition system, along with mitigation strategies. Issues such as grounding …
Date:
March 16, 2011
Creator:
Aguayo Navarrete, Estanislao
Object Type:
Report
System:
The UNT Digital Library
Morocco-U.S. Free Trade Agreement
This report discusses the free trade agreement (FTA) between United States and Morocco. The United States and Morocco reached agreement on March 2, 2004 to create a free trade agreement.
Date:
February 16, 2006
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
U.S.-European Union Trade Relations: Issues and Policy Challenges
None
Date:
December 16, 2002
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
World Trade Organization (WTO): Issues in the Debate on Continued U.S. Participation
Following World War II, the United States led efforts to establish an open and nondiscriminatory trading system with the expressed goal of raising the economic well-being of all countries and bolstering world peace. These efforts culminated in the creation of the General Agreement on Tariffs and Trade (GATT) in 1948, a provisional agreement on tariffs and trade rules that governed world trade for 47 years. The World Trade Organization (WTO) succeeded the GATT in 1995 and today serves as a permanent body that administers the rules and agreements negotiated and signed by 153 participating parties, as well as a forum for dispute settlement and negotiations. The purpose of this report is to analyze some of the main issues in any debate on U.S. participation in the WTO and to address some of the criticisms leveled at the organization. Academic studies indicate that the United States benefits from broad reductions in trade barriers worldwide, but some workers and industries might not share in those gains. Decisions in the WTO are made by member governments, which determine their negotiating positions, file dispute challenges, and implement their decisions. However, some argue that smaller countries are left out of decision-making and that governments tend …
Date:
June 16, 2010
Creator:
Ahearn, Raymond J. & Fergusson, Ian F.
Object Type:
Report
System:
The UNT Digital Library
Laser fusion experiments at LLL
These notes present the experimental basis and status for laser fusion as developed at LLL. Two other chapters, one authored by K.A. Brueckner and the other by C. Max, present the theoretical implosion physics and laser plasma interaction physics. The notes consist of six sections. The first is an introductory section which provides some of the history of inertial fusion and a simple explanation of the concepts involved. The second section presents an extensive discussion of diagnostic instrumentation used in the LLL Laser Fusion Program. The third section is a presentation of laser facilities and capabilities at LLL. The purpose here is to define capability, not to derive how it was obtained. The fourth and fifth sections present the experimental data on laser-plasma interaction and implosion physics. The last chapter is a short projection of the future.
Date:
June 16, 1980
Creator:
Ahlstrom, H.G.
Object Type:
Report
System:
The UNT Digital Library
Study of the high-j states in {sup 249}Cm.
The authors have performed the reaction {sup 248}Cm({sup 4}He, {sup 3}He) using 98.5-MeV alpha particles from the IUCF cyclotron to populate high-j states in {sup 249}Cm. A tentative assignment of the K{sub 17/2} component of the 1/2{sup +}[880] Nilsson state has been made.
Date:
July 16, 1998
Creator:
Ahmad, I.
Object Type:
Article
System:
The UNT Digital Library
EARLY ENTRANCE COPRODUCTION PLANT
The overall objective of this project is the three phase development of an Early Entrance Coproduction Plant (EECP) which uses petroleum coke to produce at least one product from at least two of the following three categories: (1) electric power (or heat), (2) fuels, and (3) chemicals. The objective is to have these products produced by technologies capable of using synthesis gas derived from coal and/or other carbonaceous feedstocks. The objectives of Phase I were to determine the feasibility and define the concept for the EECP located at a specific site; develop a Research, Development, and Testing (RD&T) Plan for implementation in Phase II; and prepare a Preliminary Project Financing Plan. The objective of Phase II is to implement the work as outlined in the Phase I RD&T Plan to enhance the development and commercial acceptance of coproduction technology that produces high-value products, particularly those that are critical to our domestic fuel and power requirements. The work performed under Phase II will resolve critical knowledge and technology gaps on the integration of gasification and downstream processing to coproduce some combination of power, fuels, and chemicals from coal and/or other carbonaceous feedstocks. The objective of Phase III is to develop an …
Date:
December 16, 2003
Creator:
Ahmed, Mushtaq; Anderson, John H.; Berry, Earl R.; Raybold, Troy; Shah, Lalit S. & Yackly, Kenneth A.
Object Type:
Report
System:
The UNT Digital Library
Large-Signal Injection-Level Spectroscopy of Impurities in Silicon
Deep level defects in silicon are identified by measuring the recombination lifetime as a function of the injection level. The basic models for recombination at deep and shallow centers is developed. The defect used for the theoretical model is the well-known interstitial Fe ion in silicon. Data are presented on silicon samples ranging in defect content from intentionally Fe-doped samples to an ultra-pure float-zone grown sample. These data are analyzed in terms of the injection-level spectroscopy model.
Date:
October 16, 1998
Creator:
Ahrenkiel, R. K. & Johnston, S. W.
Object Type:
Article
System:
The UNT Digital Library
Recombination Lifetime of InxGa1-xAs Alloys Used in Thermophotovoltaic Converters
The family of ternary compounds of composition InxGa1-xAs are of considerable interest for thermophotovoltaic energy converters. The recombination lifetimes of the various compositions are critical to the successful application of these materials as efficient converters. Here we will describe experimental results on the composition. In0.53Ga0.47 that is lattice-matched to InP. We will also describe lifetime results on the compositions In0.68Ga0.32As, with bandgap of 0.60 eV to compositions In0.78Ga0.22As with a bandgap of 0.50 eV. Double heterostructure confinement devices have been made over a range of both n- and p-type doping. These results are preliminary, but the goal is to obtain the radiative and Auger recombination coefficients for the alloys in this composition range.
Date:
February 16, 1999
Creator:
Ahrenkiel, R. K.; Ellingson, R.; Johnston, S.; Webb, J.; Carapella, J. & Wanlass, M.
Object Type:
Article
System:
The UNT Digital Library
Setup and Performance of the Rhic Injector Accelerators for the 2005 Run With Copper Ions.
Copper ions for the 2005 run [1] of the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) are accelerated in the Tandem, Booster and AGS prior to injection into RHIC. The setup and performance of these accelerators with copper are reviewed in this paper.
Date:
May 16, 2005
Creator:
Ahrens, L.; Alessi, J. & Gardner, C. J.
Object Type:
Article
System:
The UNT Digital Library
Broom or Brush
Patent for metal brooms or brushes that are "strong and durable, relatively light in weight, and can be inexpensively manufactured" (line 13-15). It is intended for "sweeping snow, mud, slush, and the like" (line 16-17). The patent can also be applied for smaller version of metal brooms or brushes for other purposes.
Date:
March 16, 1915
Creator:
Airhart, Noah S.
Object Type:
Patent
System:
The Portal to Texas History
The Luminosity Function of Fermi-detected Flat-Spectrum Radio Quasars
Fermi has provided the largest sample of {gamma}-ray selected blazars to date. In this work we use a complete sample of FSRQs detected during the first year of operation to determine the luminosity function (LF) and its evolution with cosmic time. The number density of FSRQs grows dramatically up to redshift {approx}0.5-2.0 and declines thereafter. The redshift of the peak in the density is luminosity dependent, with more luminous sources peaking at earlier times; thus the LF of {gamma}-ray FSRQs follows a luminosity-dependent density evolution similarly to that of radio-quiet AGN. Also using data from the Swift Burst Alert Telescope we derive the average spectral energy distribution of FSRQs in the 10 keV-100GeV band and show that there is no correlation of the peak {gamma}-ray luminosity with {gamma}-ray peak frequency. The coupling of the SED and LF allows us to predict that the contribution of FSRQs to the Fermi isotropic {gamma}-ray background is 9.3{sub -1.0}{sup +1.6}% ({+-}3% systematic uncertainty) in the 0.1-100GeV band. Finally we determine the LF of unbeamed FSRQs, finding that FSRQs have an average Lorentz factor of {gamma} = 11.7{sub -2.2}{sup +3.3}, that most are seen within 5{sup o} of the jet axis, and that they represent …
Date:
April 16, 2012
Creator:
Ajello, M.; Shaw, M. S.; Romani, R. W.; Dermer, C. D.; Costamante, L.; King, O. G. et al.
Object Type:
Article
System:
The UNT Digital Library
HAPs-Rx: Precombustion Removal of Hazardous Air Pollutant Precursors
CQ Inc. and its project team members--Howard University, PrepTech Inc., Fossil Fuel Sciences, the United States Geological Survey (USGS), and industry advisors--are applying mature coal cleaning and scientific principles to the new purpose of removing potentially hazardous air pollutants from coal. The team uniquely combines mineral processing, chemical engineering, and geochemical expertise. This project meets more than 11 goals of the U.S. Department of Energy (DOE), the National Energy Strategy, and the 1993 Climate Change Action Plan. During this project: (1) Equations were developed to predict the concentration of trace elements in as-mined and cleaned coals. These equations, which address both conventional and advanced cleaning processes, can be used to increase the removal of hazardous air pollutant precursors (HAPs) by existing cleaning plants and to improve the design of new cleaning plants. (2) A promising chemical method of removing mercury and other HAPs was developed. At bench-scale, mercury reductions of over 50 percent were achieved on coal that had already been cleaned by froth flotation. The processing cost of this technology is projected to be less than $3.00 per ton ($3.30 per tonne). (3) Projections were made of the average trace element concentration in cleaning plant solid waste streams from …
Date:
March 16, 1998
Creator:
Akers, David J. & Raleigh, Clifford E.
Object Type:
Report
System:
The UNT Digital Library
Three-Body Breakup Dynamics in Dissociative Recombination
Using the CRYRing Facility in Stockholm Coupled with an MCP-CCD detector, and a differential stopping foil, we have determined dynamic parameters in the three-body dissociative recombination of H<sub>2</sub>O<sup>+</sup>. These include the distribution between the O(<sup>3</sup>P) and O(<sup>1</sup>D) channels, the distribution of H atom recoil energies in the O(<sup>3</sup>P) channel and the distribution of angles between the two departing H atoms.
Date:
June 16, 1999
Creator:
Al-Khalili, A.; Datz, S.; Derkatch, A.; Larsson, M.; Rosén, S.; Shi, W. et al.
Object Type:
Article
System:
The UNT Digital Library