UNT Libraries Government Documents Department - 243 Matching Results

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open access

13th Annual Meeting of the ALS Users' Association

Description: A complement of 266 users, staff, and vendors descended upon the Ernest Orlando Lawrence Berkeley National Laboratory (Berkeley Lab) from Monday through Wednesday, October 16-18, 2000 for the thirteenth edition of the annual Advanced Light Source (ALS) users meeting. In a departure from previous practice, the meeting featured an increased emphasis on workshops with the result that the proceedings were equally divided between oral and poster presentations and the workshops. After the traditional… more
Date: November 21, 2000
Creator: Robinson, Art
Item Type: Refine your search to only Article
open access

2D numerical simulation of the resistive reconnection layer

Description: In this paper the authors present a two-dimensional numerical simulation of a reconnection current layer in incompressible resistive magnetohydrodynamics with uniform resistivity in the limit of very large Lundquist numbers. They use realistic boundary conditions derived consistently from the outside magnetic field, and they also take into account the effect of the backpressure from flow into the separatrix region. They find that within a few Alfven times the system reaches a steady state consi… more
Date: July 21, 2000
Creator: Uzdensky, D. A. & Kulsrud, R. M.
Item Type: Refine your search to only Report
open access

Accelerator system for neutron radiography

Description: The field of x-ray radiography is well established for doing non-destructive evaluation of a vast array of components, assemblies, and objects. While x-rays excel in many radiography applications, their effectiveness diminishes rapidly if the objects of interest are surrounded by thick, high-density materials that strongly attenuate photons. Due to the differences in interaction mechanisms, neutron radiography is highly effective in imaging details inside such objects. To obtain a high intensit… more
Date: September 21, 2000
Creator: Rusnak, B & Hall, J
Item Type: Refine your search to only Article
open access

Adaptive optics for improved retinal surgery and diagnostics

Description: It is now possible to field a compact adaptive optics (AO) system on a surgical microscope for use in retinal diagnostics and surgery. Recent developments in integrated circuit technology and optical photonics have led to the capability of building an AO system that is compact and significantly less expensive than traditional AO systems. It is foreseen that such an AO system can be integrated into a surgical microscope while maintaining a package size of a lunchbox. A prototype device can be de… more
Date: August 21, 2000
Creator: Humayun, M. S.; Sadda, S. R.; Thompson, C. A.; Olivier, S. S. & Kartz, M. W.
Item Type: Refine your search to only Report
open access

Adjustable cutting tool holder

Description: This patent application describes a device for varying the geometry of a cutting tool for use in machining operations.
Date: September 21, 2000
Creator: Steinhour, William Lee III; West, Drew; Honeycutt, Steve; Frank, Steven & Krishnamurthy, Kallutla
Item Type: Refine your search to only Patent
open access

Aluminum-fly ash metal matrix composites for automotive parts. [Reports for October 1 to December 31, 1999, and January 1 - to March 31, 2000]

Description: The highlights of this report are: (1) fly ash classified by less than 100 microns in size was mixed into a 300 lb melt of alloy 535 without the need of a magnesium additive; (2) a vibratory feeder fitted with a sieve was used as the means to minimize particle clustering while introducing fly ash into the aluminum alloy 535 melt; and (3) the industrial-size field test was successful in that sand mold castings and permanent mold castings of tensile bars, K mold bars, and ingots were made from al… more
Date: April 21, 2000
Creator: Weiss, David; Purgert, Robert; Rhudy, Richard & Rohatgi, Pradeep
Item Type: Refine your search to only Report
open access

Analysis of hazardous biological material by MALDI mass spectrometry

Description: Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-MS) has become a valuable tool for analyzing microorganisms. The speed with which data can be obtained from MALDI-MS makes this a potentially important tool for biological health hazard monitoring and forensic applications. The excitement in the mass spectrometry community in this potential field of application is evident by the expanding list of research laboratories pursuing development of MALDI-MS for bacteri… more
Date: March 21, 2000
Creator: Wahl, K. L.; Jarman, K. H.; Valentine, N. B.; Kingsley, M. T.; Petersen, C. E.; Cebula, S. T. et al.
Item Type: Refine your search to only Report
open access

ANALYSIS OF OIL-BEARING CRETACEOUS SANDSTONE HYDROCARBON RESERVOIRS, EXCLUSIVE OF THE DAKOTA SANDSTONE, ON THE JICARILLA APACHE INDIAN RESERVATION, NEW MEXICO

Description: A goal of the Mesaverde project was to better define the depositional system of the Mesaverde in hopes that it would provide insight to new or by-passed targets for oil exploration. The new, detailed studies of the Mesaverde give us a better understanding of the lateral variability in depositional environments and facies. Recognition of this lateral variability and establishment of the criteria for separating deltaic, strandplain-barrier, and estuarine deposits from each other permit developmen… more
Date: May 21, 2000
Creator: Ridgley, Jennie
Item Type: Refine your search to only Report
open access

ANALYSIS OF OIL-BEARING CRETACEOUS SANDSTONE HYDROCARBON RESERVOIRS, EXCLUSIVE OF THE DAKOTA SANDSTONE, ON THE JICARILLA APACHE INDIAN RESERVATION, NEW MEXICO

Description: An additional 450 wells were added to the structural database; there are now 2550 wells in the database with corrected tops on the Juana Lopez, base of the Bridge Creek Limestone, and datum. This completes the structural data base compilation. Fifteen oil and five gas fields from the Mancos-ElVado interval were evaluated with respect to the newly defined sequence stratigraphic model for this interval. The five gas fields are located away from the structural margins of the deep part of the San J… more
Date: January 21, 2000
Creator: Ridgley, Jennie
Item Type: Refine your search to only Report
open access

Analysis of the November 1999 Dead Sea Calibration Shots

Description: In November 1999 three chemical explosions were conducted in the Dead Sea for the purposes of calibrating the International Monitoring System (IMS) for the Comprehensive Nuclear-Test-Ban Treaty (CTBT). These shots were organized and conducted by the Geophysical Institute of Israel (GII). Large chemical explosions are the most valuable form of ground truth as the location, depth and origin time are very well known. We focus on the two largest shots (M{sub w} {ge} 3.6) and performed several types… more
Date: July 21, 2000
Creator: Rodgers, A J; Myers, S; Mayeda, K & Walter, W
Item Type: Refine your search to only Article
open access

Appropriations for FY2001: Treasury, Postal Service, Executive Office of the President, and General Government

Description: 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 Treasury, Postal Service, and General Government.
Date: September 21, 2000
Creator: Gressle, Sharon S.
Item Type: Refine your search to only Report
open access

Ashcroft Pressure Switch Monitor for Low SCHe Purge Pressure

Description: These 0-15 psig pressure switches are located in the SCHe helium purge lines after PCV-5*23 and before PCV-5*27. The pressure switches monitor the pressure being maintained between the two PCVs and actuate on low pressure of 15 psig. This design is used for each of the SCHe supply lines (4). Electronic output signal is NON-SAFETY (GS).
Date: June 21, 2000
Creator: Van Katwijk, Carl
Item Type: Refine your search to only Report
open access

Assessment of surface contamination with contact mechanics

Description: The authors are particularly interested in the work of adhesion measurements as a means to facilitate the understanding of the adhesive failure mechanisms for systems containing encapsulated and bonded components. Of the several issues under investigation, one is the effect of organic contamination on the adhesive strength for several types of polymer/metal interface combinations. The specific question that the authors are trying to address is at what level of contamination does adhesive streng… more
Date: February 21, 2000
Creator: Emerson, John A.; Miller, Gregory V.; Sorensen, Christopher R. & Pearson, Raymond A.
Item Type: Refine your search to only Article
open access

Award-Winning System Assays Radiation Waste With Radiation

Description: More than half a million drums of radioactive waste are stored at 30 Department of Energy sites across the nation, with thousands more to come as facilities at weapons complex sites are dismantled. All of these drums must be assayed to determine and verify their contents and levels of radioactivity so they can be transported for permanent storage or disposal. A system that assays containers of radioactive waste safely, accurately, and nonintrusively has garnered a prestigious R and D 100 Award-… more
Date: August 21, 2000
Creator: Roberson, G. P.
Item Type: Refine your search to only Report
open access

Beam position monitor

Description: An apparatus for determining the position of an x-ray beam relative to a desired beam axis where the apparatus is positioned along the beam path so that a thin metal foil target intersects the x-ray beam generating fluorescent radiation. A PIN diode array is positioned so that a portion of the fluorescent radiation is intercepted by the array resulting in a series of electrical signals from the PIN diodes making up the array. The signals are then analyzed and the position of the x-ray beam is d… more
Date: September 21, 2000
Creator: Alkire, Randy W.; Rosenbaum, Gerold & Evans, Gwyndaf
Item Type: Refine your search to only Patent
open access

A beamline matching application based on open source software

Description: An interactive Beamline Matching application has been developed using beamline and automatic differentiation class libraries. Various freely available components were used; in particular, the user interface is based on FLTK, a C++ toolkit distributed under the terms of the GNU Public License (GPL). The result is an application that compiles without modifications under both X-Windows and Win32 and offers the same look and feel under both operating environments. In this paper, we discuss some of … more
Date: December 21, 2000
Item Type: Refine your search to only Article
open access

Benchmarks and models for 1-D radiation transport in stochastic participating media

Description: Benchmark calculations for radiation transport coupled to a material temperature equation in a 1-D slab and 1-D spherical geometry binary random media are presented. The mixing statistics are taken to be homogeneous Markov statistics in the 1-D slab but only approximately Markov statistics in the 1-D sphere. The material chunk sizes are described by Poisson distribution functions. The material opacities are first taken to be constant and then allowed to vary as a strong function of material tem… more
Date: August 21, 2000
Creator: Miller, D. S.
Item Type: Refine your search to only Thesis or Dissertation
open access

Bent Solenoids with Superimposed Dipole Fields

Description: A conceptual design and manufacturing technique were developed for a superconducting bent solenoid magnet with a superimposed dipole field that would be used as a dispersion device in the cooling channel of a future Muon Collider. The considered bent solenoid is equivalent to a 180° section of a toroid with a major radius of ~610 mm and a coil aperture of ~416 mm. The required field components of this magnet are 4 tesla for the solenoid field and 1 tesla for the superimposed dipole field. A mag… more
Date: March 21, 2000
Creator: Meinke, Rainer, B. & Goodzeit, Carl, L.
Item Type: Refine your search to only Report
open access

Biotechnology: Information on Prices of Genetically Modified Seeds in the United States and Argentina

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the pricing of genetically modified seeds, focusing on the: (1) prices of Roundup Ready soybean seeds and Bacillus thuringiensis (Bt) corn seeds in the United States and Argentina; and (2) major reasons for the price differences, if any, between the two countries for these seeds."
Date: January 21, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
open access

Bottoms-Up In-Situ Vitrification of Hard-to-Treat Buried Mixed Wastes

Description: This Phase I project was designed to demonstrate feasibility of in situ waste destruction and vitrification technology as a means of remediating hard-to-treat buried radioactive and hazardous wastes and focused on proving viability of the concentric graphite arc melter technique as a robust, safe, and economic tool for use as the IWDV process heat source. Oak Ridge National Laboratory provided technical support to Montec Research including the volatile behavior of elements during silicate melti… more
Date: October 21, 2000
Creator: Spalding, B. P.
Item Type: Refine your search to only Report
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