Partner
UNT Libraries Government Documents Department
3,248
Oklahoma Historical Society
1,339
UNT Libraries Special Collections
612
UNT Libraries
226
Sterling Municipal Library
118
National Museum of the Pacific War/Admiral Nimitz Foundation
113
UNT Music Library
78
San Antonio Public Library
63
Carl Albert Congressional Research and Studies Center
50
Patrick Heath Public Library
31
90 More
Collection
Office of Scientific & Technical Information Technical Reports
1,591
Texas Digital Newspaper Program
1,166
Congressional Research Service Reports
882
Jim Argo Collection
873
Oklahoma Digital Newspaper Program
532
Tocker Foundation Grant
524
Defense Base Closure and Realignment Commission
369
Government Accountability Office Reports
288
University Photography Collection
198
Photographing UNT
198
160 More
Degree Department
Degree Discipline
Degree Level
Country
States
Decade
Month
Day
Results:
1 - 24 of
6,810
next
AZ-101 Mixer Pump Test Qualification Test Procedures (QTP)
Describes the Qualification test procedure for the AZ-101 Mixer Pump Data Acquisition System (DAS). The purpose of this Qualification Test Procedure (QTP) is to confirm that the AZ-101 Mixer Pump System has been properly programmed and hardware configured correctly. This QTP will test the software setpoints for the alarms and also check the wiring configuration from the SIMcart to the HMI. An Acceptance Test Procedure (ATP), similar to this QTP will be performed to test field devices and connections from the field.
Date:
January 10, 2000
Creator:
Thomas, W. K.
Object Type:
Report
System:
The UNT Digital Library
Alternative Fuel News: Vol. 3, No. 4
This final issue of the Alternative Fuel News (AFN) for the 20th century provides updates on specific Clean Cities Program progress and provide a glimpse of what is in store for the future. A national nonprofit organization has been part of the Clean Cities vision for some time, and now it is a reality as National Clean Cities, Inc. (NCC). While Clean Cities coalitions have had some success in securing local private foundation funds for alternative fuel vehicle (AFV) projects in their regions, now with the help of NCC, they can tap into the dollars available from large, national foundations. The Clean Cities Game Plan 2000, which is the highlight of the cover story, outlines the strategy for the next year.
Date:
January 10, 2000
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 253, Ed. 1 Monday, January 10, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 109, No. 3, Ed. 1 Monday, January 10, 2000
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 10, 2000
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of CZT crystals and detectors grown in Russia and the Ukraine by high-pressure Bridgman methods
Sandia National Laboratories (SNL) is leading an effort to evaluate vertical high pressure Bridgman (VHPB) Cd{sub 1-x}Zn{sub x}Te (CZT) crystals grown in the former Soviet Union (FSU) (Ukraine and Russia), in order to study the parameters limiting the crystal quality and the radiation detector performance. The stoichiometry of the CZT crystals, with 0.04 < x < 0.25, has been determined by methods such as proton-induced X-ray emission (PIXE), X-ray diffraction (XRD), microprobe analysis and laser ablation ICP mass spectroscopy (LA-ICP/MS). Other methods such as triaxial double crystal x-ray diffraction (TADXRD), infrared transmission spectroscopy (IR), atomic force microscopy (AFM), thermoelectric emission spectroscopy (TEES) and laser induced transient charge technique (TCT) were also used to evaluate the material properties. The authors have measured the zinc distribution in a CZT ingot along the axial direction and also its homogeneity. The (Cd+Zn)/Te average ratio measured on the Ukraine crystals was 1.2, compared to the ratio of 0.9-1.06 on the Russian ingots. The IR transmission showed highly decorated grain boundaries with precipitates and hollow bubbles. Microprobe elemental analysis and LA-ICP/MS showed carbon precipitates in the CZT bulk and carbon deposits along grain boundaries. The higher concentration of impurities and the imperfect crystallinity lead to shorter …
Date:
January 10, 2000
Creator:
Hermon, H.; Schieber, M.; James, R. B.; Lee, E. Y.; Yang, N.; Antolak, A. J. et al.
Object Type:
Article
System:
The UNT Digital Library
[Arlington Police Chief Theron Bowman with Assistants and Deputy Chiefs, 2000]
Photograph of Police Chief Theron Bowman (sitting in center) with assistant chiefs sitting on both sides. Larry Boyd is sitting to the left and Tommy Ingram is sitting to the right of Chief Bowman. All the Deputy Chiefs are standing in the back row and are (L to R:) Del Fisher, Jerry Kendrick, Ken Burton, Michael Ikner, Danny Sustaire, and David Pugh.
Date:
January 10, 2000
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 61, Ed. 1 Monday, January 10, 2000
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 10, 2000
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Comparison of experimental and theoretical gain-current relations in GaInP quantum well lasers
The authors compare the results of a microscopic laser theory with gain and recombination currents obtained from experimental spontaneous emission spectra. The calculated absorption spectrum is first matched to that measured on a laser, ensuring that the quasi-Fermi levels for the calculation and the experiment (spontaneous emission and gain) are directly related. This allows one to determine the inhomogeneous broadening in their experimental samples. The only other inputs to the theory are literature values of the bulk material parameter. The authors then estimate the non-radiative recombination current associated with the well and wave-guide core from a comparison of measured and calculated recombination currents.
Date:
January 10, 2000
Creator:
Smowton, P. M.; Chow, W. W. & Blood, P.
Object Type:
Article
System:
The UNT Digital Library
Discretization errors associated with Reproducing Kernel Methods: One-dimensional domains
The Reproducing Kernel Particle Method (RKPM) is a discretization technique for partial differential equations that uses the method of weighted residuals, classical reproducing kernel theory and modified kernels to produce either ``mesh-free'' or ``mesh-full'' methods. Although RKPM has many appealing attributes, the method is new, and its numerical performance is just beginning to be quantified. In order to address the numerical performance of RKPM, von Neumann analysis is performed for semi-discretizations of three model one-dimensional PDEs. The von Neumann analyses results are used to examine the global and asymptotic behavior of the semi-discretizations. The model PDEs considered for this analysis include the parabolic and hyperbolic (first and second-order wave) equations. Numerical diffusivity for the former and phase speed for the later are presented over the range of discrete wavenumbers and in an asymptotic sense as the particle spacing tends to zero. Group speed is also presented for the hyperbolic problems. Excellent diffusive and dispersive characteristics are observed when a consistent mass matrix formulation is used with the proper choice of refinement parameter. In contrast, the row-sum lumped mass matrix formulation severely degraded performance. The asymptotic analysis indicates that very good rates of convergence are possible when the consistent mass matrix …
Date:
January 10, 2000
Creator:
Voth, T. E. & Christon, M. A.
Object Type:
Article
System:
The UNT Digital Library
Dual SAW sensor technique for determining mass and modulus changes in thin silicate films during gas adsorption
Surface acoustic wave (SAW) sensors, which are sensitive to a variety of surface changes, have been widely used for chemical and physical sensing. The ability to control or compensate for the many surface forces has been instrumental in collecting valid data. In cases where it is not possible to neglect certain effects, such as frequency drift with temperature, methods such as the dual sensor technique have been utilized. This paper describes a novel use of a dual sensor technique, using two sensor materials, Quartz and GaAs, to separate out the contributions of mass and modulus of the frequency change during gas adsorption experiments. The large modulus change in the film calculated using this technique, and predicted by the Gassmann equation, provide a greater understanding of the challenges of SAW sensing.
Date:
January 10, 2000
Creator:
Hietala, S.L.; Hietala, V.M. & Brinker, C.J.
Object Type:
Article
System:
The UNT Digital Library
Electrostatic field between non-concentric cylinders
This report describes a closed-form solution to the electrostatic potential, and the electric field, between non-concentric cylinders, with the inner cylinder charged and the outer cylinder grounded. This problem is an abstraction of the situation of an electron beam within a drift tube. Capacitive and surface current probes on the inner wall of the outer cylinder are used to detect the asymmetry of the field when the beam is off center. The solution of this problem allows for a quantitative relationship between probe-array signals and beam deflection. probe-arrays of this type are called ''beam bugs'' at LLNL. The solution described here is suggested by the analysis presented in [3]. The essential point is that the 2D potential for a line source decreases along a radius as the logarithm of the distance. The non-concentric cylinder problem has a unique profile of this type for each ray from ({rho}, {sigma}) linking the inner cylinder at equipotential V{sub 2}, and the outer cylinder at equipotential 0.
Date:
January 10, 2000
Creator:
Garcia, M
Object Type:
Report
System:
The UNT Digital Library
Engineering Task Plan for the Ultrasonic Inspection of Hanford Double Shell Tanks (DST) FY2000
This document facilitates the ultrasonic examination of Hanford double-shell tanks. Included are a plan for engineering activities (individual responsibilities), plan for performance demonstration testing, and a plan for field activities (tank inspection). Also included are a Statement of Work for contractor performance of the work and a protocol to be followed should tank flaws that exceed the acceptance criteria be discovered.
Date:
January 10, 2000
Creator:
Jensen, C. E.
Object Type:
Report
System:
The UNT Digital Library
Enhanced ocean observational capability
Coastal oceans are vital to world health and sustenance. Technology that enables new observations has always been the driver of discovery in ocean sciences. In this context, we describe the first at sea deployment and operation of an inductively coupled plasma mass spectrometer (ICPMS) for continuous measurement of trace elements in seawater. The purpose of these experiments was to demonstrate that an ICPMS could be operated in a corrosive and high vibration environment with no degradation in performance. Significant advances occurred this past year due to ship time provided by Scripps Institution of Oceanography (UCSD), as well as that funded through this project. Evaluation at sea involved performance testing and characterization of several real-time seawater analysis modes. We show that mass spectrometers can rapidly, precisely and accurately determine ultratrace metal concentrations in seawater, thus allowing high-resolution mapping of large areas of surface seawater. This analytical capability represents a significant advance toward real-time observation and understanding of water mass chemistry in dynamic coastal environments. In addition, a joint LLNL-SIO workshop was convened to define and design new technologies for ocean observation. Finally, collaborative efforts were initiated with atmospheric scientists at LLNL to identify realistic coastal ocean and river simulation models to …
Date:
January 10, 2000
Creator:
Volpe, A. M. & Esser, B. K.
Object Type:
Report
System:
The UNT Digital Library
Excess Defense Articles: Grants and Sales to Allies and Friendly Countries
None
Date:
January 10, 2000
Creator:
Grimmett, Richard F.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, January 10, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fractured petroleum reservoirs
Total compressibility in a fractured reservoir is estimated using the pressure response due to gravitational potential variations. Both the moon and the sun gravitational potentials are accounted for using the full expression by inclusion of longer-period components. The semi-diurnal and diurnal pressure data show substantial long-term variations. The gravitational potential also contains the same variation trend; the ratio between the potential and pressure has a fairly uniform value over successive cycles. The computed total compressibility is also fairly constant and independent of the cycle. Results show the effects of the time interval over which the pressure measurements are performed as well as the location.
Date:
January 10, 2000
Creator:
Firoozabadi, A.; Chang, E. & Tang, G.Q.
Object Type:
Report
System:
The UNT Digital Library
[Funeral Program for Lee Arthur Hendricks, Jr., January 10, 2000]
Funeral program for Mr. Lee Arthur Hendricks, Jr. The funeral was held Monday, January 10, 2000 at Friendship Baptist Church, officiated by Rev. R. L. Archield, Sr., Pastor. Funeral arrangements were made through Lewis Funeral Home and he was buried in Meadowlawn Memorial Park in San Antonio, Texas.
Date:
January 10, 2000
Creator:
unknown
Object Type:
Pamphlet
System:
The Portal to Texas History
InGaP/InGaAsN/GaAs NpN double heterojunction bipolar transistor
The authors have demonstrated a functional NpN double heterojunction bipolar transistor (DHBT) using InGaAsN for base layer. The InGaP/In{sub 0.03}Ga{sub 0.97}As{sub 0.99}N{sub 0.01}/GaAs DHBT has a low V{sub ON} of 0.81 V, which is 0.13 V lower than in a InGaP/GaAs HBT. The lower V{sub ON} is attributed to the smaller bandgap (E{sub g}=1.20eV) of MOCVD grown In{sub 0.03}Ga{sub 0.97}As{sub 0.99}N{sub 0.01} base layer. GaAs is used for the collector; thus the BV{sub CEO} is 10 V, consistent with the BV{sub CEO} of InGaP/GaAs Hbts of comparable collector thickness and doping level. To alleviate the current blocking phenomenon caused by the larger {triangle}E{sub C} between InGaAsN and GaAs, a graded InGaAs layer with {delta}-doping is inserted at the base-collector junction. The improved device has a peak current gain of 7 with ideal IV characteristics.
Date:
January 10, 2000
Creator:
Chang, P. C.; Baca, A. G.; Li, N. Y.; Xie, X. M.; Sharps, P. R. & Hou, H. Q.
Object Type:
Article
System:
The UNT Digital Library
Integrated Environment and Safety and Health Management System (ISMS) Implementation Project Plan
The Integrated Environment, Safety and Health Management System (ISMS) Implementation Project Plan serves as the project document to guide the Fluor Hanford, Inc (FHI) and Major Subcontractor (MSC) participants through the steps necessary to complete the integration of environment, safety, and health into management and work practices at all levels.
Date:
January 10, 2000
Creator:
MITCHELL, R.L.
Object Type:
Report
System:
The UNT Digital Library
Integrated Safety Management System Phase I Verification for the Plutonium Finishing Plant (PFP) [VOL 1 & 2]
U.S. Department of Energy (DOE) Policy 450.4, Safety Management System Policy commits to institutionalizing an Integrated Safety Management System (ISMS) throughout the DOE complex as a means of accomplishing its missions safely. DOE Acquisition Regulation 970.5204-2 requires that contractors manage and perform work in accordance with a documented safety management system.
Date:
January 10, 2000
Creator:
SETH, S.S.
Object Type:
Report
System:
The UNT Digital Library
K West Basin Integrated Water Treatment System (IWTS) E-F Annular Filter Vessel Accident Calculations
Four bounding accidents postulated for the K West Basin integrated water treatment system are evaluated against applicable risk evaluation guidelines. The accidents are a spray leak during fuel retrieval, spray leak during backflushing a hydrogen explosion, and a fire breaching filter vessel and enclosure. Event trees and accident probabilities are estimated. In all cases, the unmitigated dose consequences are below the risk evaluation guidelines.
Date:
January 10, 2000
Creator:
PIEPHO, M.G.
Object Type:
Report
System:
The UNT Digital Library
KULL: LLNL's ASCI Inertial Confinement Fusion Simulation Code
KULL is a three dimensional, time dependent radiation hydrodynamics simulation code under development at Lawrence Livermore National Laboratory. A part of the U.S. Department of Energy's Accelerated Strategic Computing Initiative (ASCI), KULL's purpose is to simulate the physical processes in Inertial Confinement Fusion (ICF) targets. The National Ignition Facility, where ICF experiments will be conducted, and ASCI are part of the experimental and computational components of DOE's Stockpile Stewardship Program. This paper provides an overview of ASCI and describes KULL, its hydrodynamic simulation capability and its three methods of simulating radiative transfer. Particular emphasis is given to the parallelization techniques essential to obtain the performance required of the Stockpile Stewardship Program and to exploit the massively parallel processor machines that ASCI is procuring.
Date:
January 10, 2000
Creator:
Rathkopf, J. A.; Miller, D. S.; Owen, J. M.; Zike, M. R.; Eltgroth, P. G.; Madsen, N. K. et al.
Object Type:
Article
System:
The UNT Digital Library
Liquid and Gaseous Waste Operations Annual Operating Report CY 1999
None
Date:
January 10, 2000
Creator:
Maddox, J. J.
Object Type:
Report
System:
The UNT Digital Library
Microstructural Analyses of Topopah Spring Tuff from the Large Block Test at Fran Ridge, Nevada
Microstructural information (e.g., porosity, pore size distribution, and surface area) of porous media is critical to understanding water transport mechanisms and physical properties and their bearing on geophysical measurements. We report microstructural data obtained by mercury injection porosimetry (MIP) on 33 samples of densely welded Topopah Spring tuff from Fran Ridge, Yucca Mountain, Nevada Test Site (NTS), Nevada. The characterization of these samples is also important for the interpretation and analysis of the Large Block Test (LBT) performed in support of the Yucca Mountain Project (YMP). This report includes previously published data on samples from the same location (Roberts and Lin, 1996). We also present information from the Yucca Mountain Site Characterization Project/Lawrence Livermore National Laboratory (YMSCP/LLNL) Large Block Test Engineering Plan (Wilder, 1995) to allow correlation of our data directly to various planes within the Large Block.
Date:
January 10, 2000
Creator:
Roberts, J. J.
Object Type:
Report
System:
The UNT Digital Library