143 Matching Results

Search Results

Results: 1 - 24 next
open access

Information, complexity and efficiency: The automobile model

Description: The new, rapidly evolving field of industrial ecology - the objective, multidisciplinary study of industrial and economic systems and their linkages with fundamental natural systems - provides strong ground for believing that a more environmentally and economically efficient economy will be more information intensive and complex. Information and intellectual capital will be substituted for the more traditional inputs of materials and energy in producing a desirable, yet sustainable, quality of … more
Date: August 8, 1996
Creator: Allenby, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear fuels technologies fiscal year 1996 research and research development test results

Description: During fiscal year 1996, the Department of Energy`s Office of Fissile Materials Disposition (OFMD) funded Los Alamos National Laboratory (LANL) to investigate issues associated with the fabrication of plutonium from dismantled weapons into mixed-oxide (MOX) nuclear fuel for disposition in nuclear power reactors. These issues can be divided into two main categories: issues associated with the fact that the plutonium from dismantled weapons contains gallium, and issues associated with the unique … more
Date: November 8, 1996
Creator: Beard, C. A.; Blair, H. T.; Buksa, J. J. & Butt, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shake table testing of structural clay tile infilled frames

Description: Two steel frames with structural clay tile infills were tested under simulated seismic loads in both the out-of-plane and in-plane direction. Out-of-plane testing showed that infill panels separate from their bounding frame, and respond at their own natural frequency during a seismic excitation. Due to arching, the panels remain stable. In-plane seismic testing showed similar behavior patterns to previous static testing. The natural frequency was adequately predicted using a piecewise linear eq… more
Date: March 8, 1996
Creator: Bennett, R. M.; Fowler, J. J. & Flanagan, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-level wastewater treatment facility process control operational test report

Description: This test report documents the results obtained while conducting operational testing of a new TK 102 level controller and total outflow integrator added to the NHCON software that controls the Low-Level Wastewater Treatment Facility (LLWTF). The test was performed with WHC-SD-CP-OTP 154, PFP Low-Level Wastewater Treatment Facility Process Control Operational Test. A complete test copy is included in appendix A. The new TK 102 level controller provides a signal, hereafter referred to its cascade… more
Date: April 8, 1996
Creator: Bergquist, G. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Conceptual design for a user-friendly adaptive optics system at Lick Observatory

Description: In this paper, we present a conceptual design for a general-purpose adaptive optics system, usable with all Cassegrain facility instruments on the 3 meter Shane telescope at the University of California`s Lick Observatory located on Mt. Hamilton near San Jose, California. The overall design goal for this system is to take the sodium-layer laser guide star adaptive optics technology out of the demonstration stage and to build a user-friendly astronomical tool. The emphasis will be on ease of cal… more
Date: March 8, 1996
Creator: Bissinger, H.D.; Olivier, S. & Max, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Keck adaptive optics: control subsystem

Description: Adaptive optics on the Keck 10 meter telescope will provide an unprecedented level of capability in high resolution ground based astronomical imaging. The system is designed to provide near diffraction limited imaging performance with Strehl {gt} 0.3 n median Keck seeing of r0 = 25 cm, T =10 msec at 500 nm wavelength. The system will be equipped with a 20 watt sodium laser guide star to provide nearly full sky coverage. The wavefront control subsystem is responsible for wavefront sensing and th… more
Date: March 8, 1996
Creator: Brase, J.M.; An, J. & Avicola, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Prototype development and testing of ultrafine grain NZP ceramics. Quarterly technical progress report No. 3, October 28, 1995--January 27, 1996

Description: Caterpillar has been developing advanced low-heat-rejection (LHR) engine designs because by insulating the combustion chamber components for reduced heat rejection, improved fuel economy and emission reduction can be achieved. The insulation eliminates heat loss during the closed portion of the cycle and increases the combustion temperature. Increased combustion temperatures improve emissions by reducing the amount of particulate or smoke. The higher combustion temperatures also provide additio… more
Date: February 8, 1996
Creator: Brown, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gist: A scientific graphics package for Python

Description: {open_quotes}Gist{close_quotes} is a scientific graphics library written by David H. Munro of Lawrence Livermore National Laboratory (LLNL). It features support for three common graphics output devices: X Windows, (Color) PostScript, and ANSI/ISO Standard Computer Graphics Metafiles (CGM). The library is small (written directly to Xlib), portable, efficient, and full-featured. It produces X versus Y plots with {open_quotes}good{close_quotes} tick marks and tick labels, 2-dimensional quadrilater… more
Date: May 8, 1996
Creator: Busby, L.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sediment isotope tomography (SIT) model version 1

Description: Geochronology using {sup 210}Pb is the principal method used to quantify sediment accumulation in rapidly depositing aquatic environments such as lakes, estuaries, continental shelves, and submarine canyons. This method is based on the radioactive decay of {sup 210}Pb with depth in a column of sediment. The decay through time of {sup 210}Pb P(t) is governed by the exponential law P(t) = P{sub 0} exp( -{lambda}t) where P{sub 0} is the surficial concentration at time t = 0, and {lambda} is the de… more
Date: March 8, 1996
Creator: Carroll, J. & Abraham, J.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Approximate option pricing

Description: As increasingly large volumes of sophisticated options (called derivative securities) are traded in world financial markets, determining a fair price for these options has become an important and difficult computational problem. Many valuation codes use the binomial pricing model, in which the stock price is driven by a random walk. In this model, the value of an n-period option on a stock is the expected time-discounted value of the future cash flow on an n-period stock price path. Path-depend… more
Date: April 8, 1996
Creator: Chalasani, P.; Saias, I. & Jha, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bench-Scale Studies With Mercury Contaminated SRS Soil

Description: The Savannah River Technology Center (SRTC) has been charactered by the Department of Enregy (DOE) - Office of Technology Development (OTD) to investigate vitrification technology for the treatment of Low Level Mixed Wastes (LLMW). In fiscal year 1995, LLW streams containing mercury and organics were targeted. This report will present the results of studies with mercury contaminated waste. In order to successfully apply vitrification technology to LLMW, the types and quantities of glass forming… more
Date: May 8, 1996
Creator: Cicero, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Surface moisture measurement system electromagnetic induction probe calibration technique

Description: The Surface Moisture Measurement System (SMMS) is designed to measure the moisture concentration near the surfaces of the wastes located in the Hanford Site tank farms. This document describes a calibration methodology to demonstrate that the Electromagnetic Induction (EMI) moisture probe meets relevant requirements in the `Design Requirements Document (DRD) for the Surface Moisture Measurement System.` The primary purpose of the experimental tests described in this methodology is to make possi… more
Date: July 8, 1996
Creator: Crowe, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Slurry phase iron catalysts for indirect coal liquefaction. First semi-annual progress report, July 5, 1995--January 4, 1996

Description: Objectives are to study factors controlling attrition resistance of slurry phase Fe catalysts, synthesize novel precipitated catalysts that overcome some of the limitations of current generation catalysts, and study catalyst-binder interactions using model catalysts. A study of Fe/silica (binder) interactions has been started. Study of effects of Cu on reducibility of Fe catalysts showed that small amounts of Cu can facilitate reduction of Fe{sub 2}O{sub 3} to {alpha}-Fe. Work with Nancy Jackso… more
Date: February 8, 1996
Creator: Datye, A.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Binder Enhanced Refuse Derived Fuel

Description: Patent relating to refuse derived fuels and more particularly to binder enhanced refuse derived fuel pellets and utilization of such pellets in solid-fuel fired furnaces.
Date: October 8, 1996
Creator: Daugherty, Kenneth E.; Venables, Barney J. & Ohlsson, Oscar O.
Item Type: Refine your search to only Patent
Partner: UNT College of Arts and Sciences
open access

[Letter to Vicki Rosenberg from Bill McCarter and Jack Davis - January 8, 1996]

Description: A letter to Vicki Rosenberg from Jack Davis and Bill McCarter outlining changes and adjustments to the NTIEVA FY96/FY97 Core Program. Sections are listed as follows: "Professional Staff Development Programs"; "Curriculum and Implementation"; and "Fundraising and Management."
Date: January 8, 1996
Creator: Davis, D. Jack & McCarter, R. William
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

[Letter from the NTIEVA Consortia to Leilani Lattin Duke, March 8, 1996]

Description: A letter from the North Texas Institute for Educators on the Visual Arts consortia to Leilani Lattin Duke, Director of the Getty Center for Education in the Arts and Vicki Rosenberg, program officer. The letter is an expression of concern from the consortia who met prior to discuss the recent evaluation of the Institute. In the letter they have listed several of their concerns about the process and reporting methods used by the Center to evaluate. While the Institute understands the need to eva… more
Date: March 8, 1996
Creator: Davis, Donald Jack & McCarter, William, 1939-
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

Soft x-ray generation in gases with an ultrashort pulse laser

Description: An experimental investigation of soft x-ray production resulting from the interaction of intense near infra-red laser radiation with gases is presented in this thesis. Specifically, soft x-ray generation through high order harmonic generation or exploiting intense inverse bremsstrahlung heating is examined. Most of these studies are conducted with femtosecond, terawatt class Cr:LiSrAlF{sub 6} (LiSAF) laser, though results derived from studies with other laser systems are presented as well. The … more
Date: January 8, 1996
Creator: Ditmire, T.R.
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Evaluation of concrete masonry unit walls for lateral natural phenomena hazards loads

Description: Older single-story facilities (Pre-1985 vintage) are commonly constructed of structural steel framing with concrete masonry unit (CMU) walls connected to columns and roof girders of the steel framing system. The CMU walls are designed for lateral wind and seismic loads (perpendicular to the wall) and transmit shear loads from the roof diaphragm to the foundation footings. The lateral loads normally govern their design. The structural framing system and the roof diaphragm system are straight for… more
Date: March 8, 1996
Creator: Faires, W.E. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Tank characterization report for single-shell tank 241-B-104

Description: This document summarizes information on the historical uses, present status, and the sampling and analysis results of waste stored in Tank 241-B-104. Sampling and analyses meet safety screening and historical data quality objectives. This report supports the requirements of Tri-party Agreement Milestone M-44-09. his characterization report summoned the available information on the historical uses and the current status of single-shell tank 241-B-104, and presents the analytical results of the J… more
Date: April 8, 1996
Creator: Field, J. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Charge-density wave and magnetic phase diagram of chromium alloys

Description: The magnetic phase diagrams of all dilute Cr alloys can be explained by a simple theoretical model with coupled spin- and charge-density waves and a finite electron reservoir. If the charge-density wave and electron reservoir are sufficiently large, the paramagnetic to commensurate spin-density wave transition becomes strongly first order, as found in Cr{sub 1- x}Fe{sub x} and Cr{sub 1-x}Si{sub x} alloys. The observed discontinuity of the slope dT{sub N}/dx at the triple point and the bending o… more
Date: August 8, 1996
Creator: Fishman, R.S. & Jiang, X.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Masonry infill performance during the Northridge earthquake

Description: The response of masonry infills during the 1994 Northridge, California earthquake is described in terms of three categories: (1) lowrise and midrise structures experiencing large near field seismic excitations, (2) lowrise and midrise structures experiencing moderate far field excitation, and (3) highrise structures experiencing moderate far field excitation. In general, the infills provided a positive beneficial effect on the performance of the buildings, even those experiencing large peak acc… more
Date: March 8, 1996
Creator: Flanagan, R.D.; Bennett, R.M.; Fischer, W.L. & Adham, S.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Performance of keck adaptive optics with sodium laser guide star

Description: The Keck telescope adaptive optics system is designed to optimize performance in he 1 to 3 micron region of observation wavelengths (J, H, and K astronomical bands). The system uses a 249 degree of freedom deformable mirror, so that the interactuator spacing is 56 cm as mapped onto the 10 meter aperture. 56 cm is roughly equal to r0 at 1.4 microns, which implies the wavefront fitting error is 0.52 ({lambda}/2{pi})({ital d}/{ital r}{sub 0}){sup 5/6} = 118 nm rms. This is sufficient to produce a … more
Date: March 8, 1996
Creator: Gavel, D. T.; Olivier, S. & Brase, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen