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11th International Conference of Radiation Research
Topics discussed in the conference included the following: Radiation Physics, Radiation Chemistry and modelling--Radiation physics and dosimetry; Electron transfer in biological media; Radiation chemistry; Biophysical and biochemical modelling; Mechanisms of DNA damage; Assays of DNA damage; Energy deposition in micro volumes; Photo-effects; Special techniques and technologies; Oxidative damage. Molecular and cellular effects-- Photobiology; Cell cycle effects; DNA damage: Strand breaks; DNA damage: Bases; DNA damage Non-targeted; DNA damage: other; Chromosome aberrations: clonal; Chromosomal aberrations: non-clonal; Interactions: Heat/Radiation/Drugs; Biochemical effects; Protein expression; Gene induction; Co-operative effects; ``Bystander'' effects; Oxidative stress effects; Recovery from radiation damage. DNA damage and repair -- DNA repair genes; DNA repair deficient diseases; DNA repair enzymology; Epigenetic effects on repair; and Ataxia and ATM.
Date:
July 18, 1999
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
The 2001 and 2003 Bush Tax Cuts and Deficit Reduction
This report uses the context of the current and long-term economic environment to examine the tax cuts implemented by the George W. Bush Administration, including the Economic Growth and Tax Relief Reconciliation Act of 2001 and the Jobs and Growth Tax Relief Reconciliation Act of 2003.
Date:
July 18, 2012
Creator:
Hungerford, Thomas L.
Object Type:
Report
System:
The UNT Digital Library
2020 Census: Sustaining Current Reform Efforts Will Be Key to a More Cost-Effective Enumeration
Testimony issued by the Government Accountability Office with an abstract that begins "Overall, the U.S. Census Bureaus (Bureau) planning efforts for 2020 are off to a good start, as the Bureau made noteworthy progress within each of the four lessons learned from the 2010 Census. Still, additional steps will be needed within each of the lessons learned in order to sustain those reforms."
Date:
July 18, 2012
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
232U CONTENT OF SAPPHIRE MATERIAL.
None
Date:
July 18, 2000
Creator:
KANE,W.R.; LEMLEY,J.R.; VANIER,P.E. & FORMAN,L.
Object Type:
Article
System:
The UNT Digital Library
83rd Texas Legislature, Second Called Session, House Bill 2, Chapter 1
Bill introduced by the Texas House of Representatives relating to the regulation of abortion procedures, providers, and facilities; providing penalties.
Date:
July 18, 2013
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
ACCEPTABILITY ENVELOPE FOR METAL HYDRIDE-BASED HYDROGEN STORAGE SYSTEMS
The design and evaluation of media based hydrogen storage systems requires the use of detailed numerical models and experimental studies, with significant amount of time and monetary investment. Thus a scoping tool, referred to as the Acceptability Envelope, was developed to screen preliminary candidate media and storage vessel designs, identifying the range of chemical, physical and geometrical parameters for the coupled media and storage vessel system that allow it to meet performance targets. The model which underpins the analysis allows simplifying the storage system, thus resulting in one input-one output scheme, by grouping of selected quantities. Two cases have been analyzed and results are presented here. In the first application the DOE technical targets (Year 2010, Year 2015 and Ultimate) are used to determine the range of parameters required for the metal hydride media and storage vessel. In the second case the most promising metal hydrides available are compared, highlighting the potential of storage systems, utilizing them, to achieve 40% of the 2010 DOE technical target. Results show that systems based on Li-Mg media have the best potential to attain these performance targets.
Date:
July 18, 2011
Creator:
Hardy, B.; Corgnale, C.; Tamburello, D.; Garrison, S. & Anton, D.
Object Type:
Article
System:
The UNT Digital Library
Access in nanoporous solids. Final Report for June 30, 1997 - May 31, 2000
This is an application of techniques of molecular theory to the study of nanostructures build on planar substrates and the face of membranes, with the ultimate goal of modifying their equilibrium and transport behavior. The work is focused on the mechanism for adsorption or deposition and how various regimes can be achieved by changing the rate of adsorption relative to characteristic diffusion and reaction time scales.
Date:
July 18, 2003
Creator:
Glandt, Eduardo D.
Object Type:
Report
System:
The UNT Digital Library
Acetylene-Gas Generator.
Patent for a new and useful acetylene gas generator, including instructions and illustrations.
Date:
July 18, 1899
Creator:
Eldridge, Hilliary & Blum, Sylvain
Object Type:
Patent
System:
The Portal to Texas History
Advances Toward Inner-Shell Photo-Ionization X-Ray Lasing at 45 (Angstrom)
The inner-shell photo-ionization (ISPI) scheme requires photon energies at least high enough to photo-ionize the K-shell. {approx}286 eV, in the case of carbon. As a consequence of the higher cross-section, the inner-shell are selectively knocked out, leaving a hole state 1s2s{sup 2}2p{sup 2} in the singly charged carbon ion. This generates a population inversion to the radiatively connected state 1s{sup 2}2s{sup 2}2p in C+, leading to gain on the 1s-2p transition at 45 {angstrom}. The resonant character of the lasing transition in the single ionization state intrinsically allows much higher quantum efficiency compared to other schemes. Competing processes that deplete the population inversion include auto-ionization, Auger decay, and in particular collisional ionization of the outer-shell electrons by electrons generated during photo-ionization. These competing processes rapidly quench the gain. Consequently, the pump method must be capable of populating the inversion at a rate faster than the competing processes. This can be achieved by an ultra-fast, high intensity laser that is able to generate an ultra-fast, bright x-ray source. With current advances in the development of high-power, ultra-short pulse lasers it is possible to realize fast x-ray sources based that can deliver powerful pulses of light in the multiple hundred terawatt regime …
Date:
July 18, 2002
Creator:
Moon, S. J.; Weber, F. A.; Celliers, P. M. & Eder, D. C.
Object Type:
Article
System:
The UNT Digital Library
Agricultural Export and Food Aid Programs
This report discusses the recent development in different programs administered by U.S. Department of Agriculture (USDA) with the goal to promote agricultural exports and to provide food aid. These programs include direct export subsidies, export market development, export credit guarantees, and foreign food aid.
Date:
July 18, 2006
Creator:
Hanrahan, Charles E.
Object Type:
Report
System:
The UNT Digital Library
Air Quality Issues and Animal Agriculture: EPA’s Air Compliance Agreement
This report discusses a plan announced by EPA in January 2005, called the Air Compliance Agreement, that would produce air quality monitoring data on animal agriculture emissions from a small number of farms, while at the same time protecting all participants (including farms where no monitoring takes place) through a “safe harbor” from liability under certain provisions of federal environmental laws.
Date:
July 18, 2007
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Air Traffic Control: FAA Uses Earned Value Techniques to Help Manage Information Technology Acquisitions, but Needs to Clarify Policy and Strengthen Oversight
A letter report issued by the Government Accountability Office with an abstract that begins "In fiscal year 2008, the Federal Aviation Administration (FAA) plans to spend over $2 billion on information technology (IT) investments--many of which support FAA's air traffic control modernization. To more effectively manage such investments, in 2005 the Office of Management and Budget required agencies to use earned value management (EVM). EVM is a project management approach that, if implemented appropriately, provides objective reports of project status, produces early warning signs of impending schedule delays and cost overruns, and provides unbiased estimates of a program's total costs. Among other objectives, GAO was asked to assess FAA's policies for implementing EVM on its IT investments, evaluate whether the agency is adequately using these techniques to manage key IT acquisitions, and assess the agency's efforts to oversee EVM compliance. To do so, GAO compared agency policies with best practices, performed four case studies, and interviewed key FAA officials."
Date:
July 18, 2008
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The Alcohol Fuels: A Study of Technical and Supply Factors
This report is a study of Technical and Supply Factors of the Alcohol Fuels.
Date:
July 18, 1980
Creator:
Segal, Migdon R.; Hack, David Bruce; Smith, Nancy L.; Fletcher, Wendell W.; Trumbule, Robert E. & Grenfell, Adrienne C.
Object Type:
Report
System:
The UNT Digital Library
Alpha Heating in ITER L-mode and H-mode Plasma
There are many uses of predictions of ITER plasma performance. One is assessing requirements of different plasma regimes. For instance, what current drive and control are needed for steady state. The heating, current drive, and torque systems planned for initial DT operation are negative ion neutral beam injection (NB), ion cyclotron resonance (IC), and electron cyclotron resonance (EC). Which combinations of heating are optimal. What are benefits of the torques, current drive, and fueling using NB. What are the shine-through power and optimum voltage for the NB? What are optimal locations and aiming of the EC launchers? Another application is nuclear licensing (e.g. System integrity, how many neutrons).
Date:
July 18, 2011
Creator:
Budny, R.V.
Object Type:
Article
System:
The UNT Digital Library
Amplitude Linearizers for PEP-II 1.2 MW Klystrons and LLRF Systems
The PEP-II B-factory has aggressive current increases planned for luminosity through 2008. At 2.2A (HER) on 4A (LER) currents, we estimate that longitudinal growth rates will be comparable to the damping rates currently achieved in the existing low level RF and longitudinal feedback systems. Prior to having a good non-linear time domain model [1] it was postulated that klystron small signal gain non-linearity may be contributing to measured longitudinal growth rates being higher than linearly predicted growth rates. Five prototype klystron amplitude modulation linearizers have been developed to explore improved linearity in the LLRF system. The linearizers operate at 476 MHz with 15 dB dynamic range and 1 MHz linear control bandwidth. Results from lab measurements and high current beam tests are presented. Future development plans, conclusions from beam testing and ideas for future use of this linearization technique are presented.
Date:
July 18, 2006
Creator:
Van Winkle, D.; Browne, J.; Fox, J. D.; Mastorides, T.; Rivetta, C. & Teytelman, D.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Limitations Imposed on One-Spool Ducted-Fan-Engine Designs by Compressors and Turbines at Flight Mach Numbers of 0, 0.6, and 0.8
Memorandum presenting an analysis of one-spool ducted-fan engines in order to determine the primarily limitations on ducted-fan-engine design and to compare this type with the turboprop and turbojet engines for the same application. Designs were studied at flight Mach numbers of 0 and 0.6 at sea level and Mach numbers of 0.6 and 0.8 at the tropopause. Results regarding the discussion of charts, effect of design parameters on turbine stress, effect of design parameters, effect of design parameters on thrust specific fuel consumption, and effect of design parameters on thrust per unit total weight flow are provided.
Date:
July 18, 1957
Creator:
Cavicchi, Richard H.
Object Type:
Report
System:
The UNT Digital Library
Analysis of long pulse physics experiments at LLL: Late 1977-Early 1979
In the two years since the last Gordon Conference, we have shifted our interest in laser-plasma interactions to the long pulse (1 ns) regime on the Argus facility. A variable Z disk series (at 3 x 10/sup 14/ W/cm/sup 2/) has been carried out and the Z dependence of line emission, backscatter, /sub h/ (hot electron temperature) and transport inhibition will be described. A variable thickness Au disk series that studied preheat and shocks will be analyzed. A simple theory for why T/sub h/ scales as Z/sup 1/4/ is presented, and a description of an electron transport experiment through layered disk targets is given.
Date:
July 18, 1979
Creator:
Rosen, M.D.
Object Type:
Report
System:
The UNT Digital Library
Analytical investigation of flow and heat transfer in coolant passages of free-convection liquid-cooled turbines
From Introduction: "An analytical investigation of the problems arising in connection with this cooling method was conducted at the NACA Lewis laboratory and is presented herein. This analysis investigates: (1) the smallest diameter hole that can be made without endangering the circulation of the liquid, and (2) methods of improving the circulation in a small-diameter hole."
Date:
July 18, 1950
Creator:
Eckert, E. R. G. & Jackson, Thomas W.
Object Type:
Report
System:
The UNT Digital Library
Animal Agriculture: Issues in the 107th Congress
A variety of animal agriculture issues, including prices, the impact of consolidation in the meat production/packing industry, trade, and the environmental impacts of large feedlots, continue to generate interest in Congress. This issue brief discusses these issues, as well as the 2002 farm bill, which contains several provisions affecting animal agriculture, including protections for contract growers, disaster assistance, country-of-origin labeling, and increased funding for conservation purposes.
Date:
July 18, 2002
Creator:
Heykoop, Jerry
Object Type:
Report
System:
The UNT Digital Library
Animal-Trap.
Patent for an improved animal trap that can catch a large variety of animals, including fish, and does not injure the animals. Bait is placed in the trap, and the door on one end is spring-activated. A hinged door on the top is where the operator can take out the animal.
Date:
July 18, 1893
Creator:
Crockett, William E. & McAdams, Richard E.
Object Type:
Patent
System:
The Portal to Texas History
Apparatus for Burning Lime.
Patent for improvements in apparatus for burning lime. To provide reliable and efficient means to extract all the heat units from fuel to be used by providing an increase draft and long blaze.
Date:
July 18, 1916
Creator:
Walsh, Patrick A. & Walsh, Edward J.
Object Type:
Patent
System:
The Portal to Texas History
Application of Natural Analogues in the Yucca Mountain Project -Overview
This report is an overview of the application of natural analogues in the Yucca Mountain Project
Date:
July 18, 2003
Creator:
Simmons, Ardyth M.
Object Type:
Article
System:
The UNT Digital Library
Applications in the Nuclear Industry for Corrosion-Resistant Amorphous-Metal Thermal-Spray Coatings
Amorphous metal and ceramic thermal spray coatings have been developed that can be used to enhance the corrosion resistance of containers for the transportation, aging and disposal of spent nuclear fuel and high-level radioactive wastes. Fe-based amorphous metal formulations with chromium, molybdenum and tungsten have shown the corrosion resistance believed to be necessary for such applications. Rare earth additions enable very low critical cooling rates to be achieved. The boron content of these materials, and their stability at high neutron doses, enable them to serve as high efficiency neutron absorbers for criticality control. Ceramic coatings may provide even greater corrosion resistance for container applications, though the boron-containing amorphous metals are still favored for criticality control applications. These amorphous metal and ceramic materials have been produced as gas atomized powders and applied as near full density, non-porous coatings with the high-velocity oxy-fuel process. This paper summarizes the performance of these coatings as corrosion-resistant barriers, and as neutron absorbers. Relevant corrosion models are also discussed, as well as a cost model to quantify the economic benefits possible with these new materials.
Date:
July 18, 2007
Creator:
Farmer, J & Choi, J
Object Type:
Report
System:
The UNT Digital Library
Appropriations for FY2001: Military Construction
Appropriations are one part of a complex federal budget process that includes budget resolutions, appropriations (regular, supplemental, and continuing) bills, rescissions, and budget reconciliation bills. This report is a guide to one of the 13 regular appropriations bills that Congress passes each year. It is designed to supplement the information provided by the House and Senate Appropriations Subcommittees on Military Construction Appropriations.
Date:
July 18, 2000
Creator:
Tyszkiewicz, Mary T.
Object Type:
Report
System:
The UNT Digital Library