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732
Oklahoma Historical Society
30
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13
Sterling Municipal Library
5
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3
Comanche Public Library
3
Alvin Community College
2
Carl Albert Congressional Research and Studies Center
2
Electra Public Library
2
Mexic-Arte Museum
2
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Office of Scientific & Technical Information Technical Reports
720
Texas Digital Newspaper Program
48
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30
Tocker Foundation Grant
26
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9
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8
Altus Times-Democrat
5
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5
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5
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Country
States
Year
Day
Language
The Albany News (Albany, Tex.), Vol. 123, No. 31, Ed. 1 Thursday, December 31, 1998
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 31, 1998
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Algorithms for a hand-held miniature x-ray fluorescence analytical instrument
The purpose of this joint program was to provide technical assistance with the development of a Miniature X-ray Fluorescence (XRF) Analytical Instrument. This new XRF instrument is designed to overcome the weaknesses of spectrometers commercially available at the present time. Currently available XRF spectrometers (for a complete list see reference 1) convert spectral information to sample composition using the influence coefficients technique or the fundamental parameters method. They require either a standard sample with composition relatively close to the unknown or a detailed knowledge of the sample matrix. They also require a highly-trained operator and the results often depend on the capabilities of the operator. In addition, almost all existing field-portable, hand-held instruments use radioactive sources for excitation. Regulatory limits on such sources restrict them such that they can only provide relatively weak excitation. This limits all current hand-held XRF instruments to poor detection limits and/or long data collection times, in addition to the licensing requirements and disposal problems for radioactive sources. The new XRF instrument was developed jointly by Quantrad Sensor, Inc., the Naval Research Laboratory (NRL), and the Department of Energy (DOE). This report describes the analysis algorithms developed by NRL for the new instrument and the software …
Date:
December 31, 1998
Creator:
Elam, W. T.; Newman, D. & Ziemba, F.
Object Type:
Report
System:
The UNT Digital Library
Alloy design and phase stability of the ternary alloy titanium-aluminum-niobium
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The authors have used high-precision electronic-structure and cluster-variational method (CVM) techniques to study aspects of alloy design involving the phase stability and ordering tendencies of the ternary system Ti-Al-Nb, and the correlation with these to changes in the electronic structure of these materials. This system is of great interest for aerospace applications due to its desirable mechanical properties and low densities. Total energies were computed for 18 binary and ternary bcc superstructures in order to derive parameters for CVM calculations, which showed important strong ordering tendencies in the alloy phase diagram as a function of temperature and alloy concentration. Structural optimization calculations were used to analyze structural instabilities for bcc, fcc, hcp, O-phase, and {omega}-phase structures. The authors discovered the mechanism for the role of Nb in the structural stability of the O-phase of the ternary intermetallic Ti{sub 2}AlNb. Calculations were also done to investigate the electronic properties associated with the structural stability of a related class of Laves Phase high-temperature structural materials NbCr{sub 2} and HfV{sub 2}.
Date:
December 31, 1998
Creator:
Albers, R. C.; Chen, Shao-Ping & Wills, J. M.
Object Type:
Report
System:
The UNT Digital Library
[Altar to Roy Lozano]
Photograph of an altar to Roy Lozano. A layer of dry pinto beans has been spread across a wooden floor, with a pattern of dry black beans partially visible on the left side of the photograph. A glass of water and some dried meat sit in front of a black and white photograph. The photograph depicts a mustachioed man wearing a white collared dress shirt. Behind the photograph sits a black urn. Next to the urn is a vase of yellow and orange flowers.
Date:
October 31, 1998
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Photograph
System:
The Portal to Texas History
[Altar to Roy Lozano]
Photograph of an altar to Roy Lozano. The altar is tall and triangular, with many streamers and flowers adorning it. Oranges, lemons, bananas, cookies, and pretzels hand from expanses of string across the altar. A multicolored blanket covers a table within the altar, upon which are laid oranges and three bottles of amber liquid. Three Day of the Dead masks are attached to the top of the altar. On the ground, a layer of pinto and black beans create a symbol. Also on the ground is a basket of cookies and cured meats, as well as four vases of yellow and orange flowers. To the left of the basket is a black and white program. Behind the altar is a mural in maroon and white, which is largely hidden by the altar.
Date:
October 31, 1998
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Photograph
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 99, No. 15, Ed. 1 Tuesday, March 31, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 31, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 67, Ed. 1 Sunday, May 31, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 31, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 119, Ed. 1 Friday, July 31, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
July 31, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 144, Ed. 1 Monday, August 31, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 31, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 99, No. 249, Ed. 1 Thursday, December 31, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 107, No. 84, Ed. 1 Sunday, May 31, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 1998
Creator:
Schwind, Jim & Dodson, Doug
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 108, No. 8, Ed. 1 Monday, August 31, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
August 31, 1998
Creator:
Schwind, Jim & Looby, Edward
Object Type:
Newspaper
System:
The Portal to Texas History
Amended annual report for Brookhaven National Laboratory: Epidemiologic surveillance - 1994
Epidemiologic surveillance at DOE facilities consists of regular and systematic collection, analysis, and interpretation of data on absences due to illness and injury in the work force. Its purpose is to provide an early warning system for health problems occurring among employees at participating sites. Data are collected by coordinators at each site and submitted to the Epidemiologic Surveillance Data Center, located at the Oak Ridge Institute for Science and Education, where quality control procedures and analyses are carried out. Rates of absences and rates of diagnoses associated with absences are analyzed by occupation and other relevant variables. They may be compared with the disease experience of different groups within the DOE work force and with populations and do not work for DOE to identify disease patterns or clusters that may be associated work activities. This report provides a final summary for BNL.
Date:
December 31, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
AMESH A mesh creating program for the integral finite differencemethod: A User's Manual
Amesh program generates discrete grids for numerical modeling of flow and transport problems in which the formulation is based on integral finite difference method (IFDM). For example, the output of Amesh can be used directly as (part of) the input to TOUGH2 or TOUGH numerical Simulator (Pruess, 1987, 1990, Pruess, et al., 1996). The code Amesh can generate 1D, 2D or 3D numerical grids for a given set of locations, i.e. the centers of each discrete sub-domain. In the 2D aerial plane the Voronoi tessellation method is used (Voronoi, 1908; Ahuja, 1982; Aurehammer, 1991; Fortune, 1987, 1988, 1993). In this method we can create a mesh of elements, within model domain, where the interfaces between neighbor elements are the perpendicular bisectors of the line connecting the element centers. The interface distances are simply the medians of the line connecting the centers. To create the 3D grid, the vertical direction interface areas are always treated as horizontal projections of the 2D areal plane. In the lateral direction the interface areas are always vertical projections. In both cases the direction of gravity vector is given by the cosine of angle formed by the line joining the element centers and the vertical. From …
Date:
August 31, 1998
Creator:
Haukwa, Charles
Object Type:
Report
System:
The UNT Digital Library
Amplitude path corrections for regional phases in China
The authors investigate the effectiveness of amplitude path corrections for regional phases on seismic event discrimination and magnitude estimation. Waveform data from digital stations in China for regional, shallow (< 50 km) events were obtained from the IRIS Data Management Center (DMC) for years 1986 to 1996 using the USGS Preliminary Determination of Epicenters (PDE) and the Chinese State Seismological Bureau (SSB) catalogs. For each event, the amplitudes for each regional phase (P{sub n}, P{sub g}, S{sub n}, L{sub g}) were measured, as well as the P{sub g} and L{sub g} coda. Measured amplitudes were corrected for source scaling using estimates of m{sub b} and for distance using a power law that accounts for attenuation and spreading. The amplitude residuals were interpolated and mapped as 2-D amplitude correction surfaces. The authors employ several methods to create the amplitude correction surfaces: a waveguide method, and two interpolation methods (Baysian kriging and a circular moving window mean smoother). They explore the sensitivities of the surfaces to the method and to regional propagation, and apply these surfaces to correct amplitude data to reduce scatter in discrimination ratios and magnitude estimates.
Date:
December 31, 1998
Creator:
Phillips, W. S.; Velasco, A. A.; Taylor, S. R. & Randall, G. E.
Object Type:
Article
System:
The UNT Digital Library
Analysis and visualization of global magnetospheric processes
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). The purpose of this project is to develop new computational and visualization tools to analyze particle dynamics in the Earth`s magnetosphere. These tools allow the construction of a global picture of particle fluxes, which requires only a small number of in situ spacecraft measurements as input parameters. The methods developed in this project have led to a better understanding of particle dynamics in the Earth`s magnetotail in the presence of turbulent wave fields. They have also been used to demonstrate how large electromagnetic pulses in the solar wind can interact with the magnetosphere to increase the population of energetic particles and even form new radiation belts.
Date:
December 31, 1998
Creator:
Winske, D.; Mozer, F.S. & Roth, I.
Object Type:
Report
System:
The UNT Digital Library
Analysis of monthly mean cloud amount for China: 1951--1994
The distribution of clouds over the globe greatly influences the regimes of other important climatic variables, such as temperature and precipitation. While satellite records of cloudiness are extremely valuable in the study of the earth`s climate (spanning now 2--3 decades), the longer records of surface-observed cloudiness for much of the earth`s surface are preferred for integration with long-term records of other surface variables in attempting to understand these variables` relationships and trends. As databases of surface-based cloud observations have become available for research use over recent decades, there have been many studies concerned with examining trends in regional cloud cover. Kaiser and Vose (1997) performed a gridded analysis of variations and trends in cloud amount using 187 Chinese weather stations for the period 1954--1990. The main findings were significant decreases in annual mean cloud amount over much of northern China, coupled with corresponding increases in the frequency of occurrence of clear skies. The decreased trends in annual mean cloud amount over northern China were found to be driven by decreasing cloud amount over most months of the year. The current study uses an expanded period of record of China cloud observations (1951--1994) to re-examine trends in cloud amount at individuals …
Date:
December 31, 1998
Creator:
Kaiser, D. P.
Object Type:
Report
System:
The UNT Digital Library
Analysis of thermal issues associated with the pre-amplifier modules in the National Ignition Facility
The design of the National Ignition Facility (NIF) calls for a desired temperature field of 20.00 {+-} 0.28 C throughout the facility. This design requirement is needed to prevent degradation of the operating performance and net yield of the NIF by heat loads generated within the facility. In particular, the potential interference of waste heat from the lighting fixtures and equipment such as the electronics racks, and pre-amplifier modules (PAMs), and its impact on the operational performance of the laser beam transport tubes and optical alignment components must be evaluated. This report describes the thermal analyses associated with the PAMs. Evaluation of thermal issues for the other equipment is discussed elsewhere.
Date:
December 31, 1998
Creator:
Lam, K.L.
Object Type:
Report
System:
The UNT Digital Library
[Analysis of Trace Elements in Limestone for Archeological Functions]
Numerous quarries in the Lutetian limestone formations of the Paris Basin provided stone for the building and the decoration of monuments from antiquity to the present. To determine the origin of stone used for masonry and sculptures in these monuments, a team of geologists and archaeologists has investigated 300 quarries and collected 2,300 samples. Petrographic and paleontologic examination of thin sections allows geologists to distinguish Lutetian limestones from Jurassic and Cretaceous limestones. Geologists also seek to formulate hypotheses regarding the origin of Lutetian limestones used for building and sculpture in the Paris region. In the search for the sources of building and sculptural stone, the analytical methods of geologists are limited because often several quarries produce the same lithofacies. A new tool is now available, however, to attack questions of provenance raised by art historians. Because limestones from different sources have distinctive patterns of trace-element concentrations, compositional analysis by neutron activation allows one to compare building or sculptural stone from one monument with stone from quarries or other monuments. This analytical method subjects a powdered limestone sample to standard neutron activation analysis procedures at Brookhaven National Laboratory. With the help of computer programs, the compositional fingerprints of Lutetian limestones can …
Date:
December 31, 1998
Creator:
Blanc, A.; Holmes, L. & Harbottle, G.
Object Type:
Article
System:
The UNT Digital Library
Analysis of vibration and pressure pulsation in positive displacement drilling motors
Three, Moineau principle, positive displacement (drilling) motors were tested on a dynamometer using water, air/mist, and foam. In conjunction with a traditional motor performance test, data were collected at 5000 samples per second using an adapted seismic data acquisition system. Shaft speed, torque, pressure, and three-axis vibration data were processed using Seismic Analysis Code (SAC) to obtain energy density spectrums (EDSs). Cascade plots were generated by plotting the EDSs against shaft speed. The cascade plots revealed that pressure pulses and motor vibrations are closely related to the eccentric rotation of the rotor in the power section. Excessive no-load vibrations were not observed in the small motors and test apparatus used; increasing torque usually decreases the amplitude of vibrations observed. Motor vibration amplitudes were as a rule not increased when compressible fluids were substituted for water.
Date:
December 31, 1998
Creator:
Hamlin, D. B. & Dreesen, D. S.
Object Type:
Article
System:
The UNT Digital Library
Analysis, scientific computing and fundamental studies in fluid mechanics. Final report Number 21, May 1, 1997--September 30, 1998
This report is a summary of work in progress and completed. Subject areas covered are: effective numerical methods for interfacial flows; multiscale finite element methods: analysis and applications; an efficient boundary integral method for the Mullins-Sekera problem; numerical simulation of three-dimensional water waves using a fast summation method; numerical solutions of steady-state rising bubbles; solidification coupled to fluid convection; turbulence models; exact solution of very viscous and Hele-Shaw flow; fundamental vortex dynamics; functional methods for turbulence; structure functions for isotropic turbulence; and water waves.
Date:
December 31, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Angular dependence of the Josephson critical current across c-axis twist junctions of layered superconductors.
The authors studied theoretically the c-axis Josephson critical current for bicrystals of high temperature superconductors twisted an angle {phi}{sub 0} about the c-axis with respect to each other. They used the effective Lawrence-Doniach models appropriate for the cases of pure s-wave or d{sub x{sup 2}-y{sup 2}}-wave order parameters, and of a dominant d{sub x{sup 2}-y{sup 2}}-wave order parameter combined with a subdominant one of either s-wave or d{sub xy}-wave form, as a function of the temperature and {phi}{sub 0}. The results demonstrate that this new phase-sensitive experiment can serve as a very useful test of order parameter symmetry. In particular, the recent zero-field experiments in the vicinity of T{sub c} by li et al. on c-axis twist junctions of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} are very difficult to explain with a dominant d{sub x{sup 2}-y{sup 2}}-wave order parameter.
Date:
July 31, 1998
Creator:
Klemm, R. A.
Object Type:
Article
System:
The UNT Digital Library
Annual symposium on Frontiers in Science
This final report summarizes activities conducted for the National Academy of Sciences' Annual Symposium on Frontiers of Science with support from the US Department of Energy for the period July 1, 1993 through May 31, 1998. During the report period, five Frontiers of Science symposia were held at the Arnold and Mabel Beckman Center of the National Academies of Sciences and Engineering. For each Symposium, an organizing committee appointed by the NAS President selected and planned the eight sessions for the Symposium and identified general participants for invitation by the NAS President. These Symposia accomplished their goal of bringing together outstanding younger (age 45 or less) scientists to hear presentations in disciplines outside their own and to discuss exciting advances and opportunities in their fields in a format that encourages, and allows adequate time for, informal one-on-one discussions among participants. Of the 458 younger scientists who participated, over a quarter (124) were women. Participant lists for all symposia (1993--1997) are attached. The scientific participants were leaders in basic research from academic, industrial, and federal laboratories in such disciplines as astronomy, astrophysics, atmospheric science, biochemistry, cell biology, chemistry, computer science, earth sciences, engineering, genetics, material sciences, mathematics, microbiology, neuroscience, physics, and …
Date:
December 31, 1998
Creator:
Metzger, N. & Fulton, K.R.
Object Type:
Report
System:
The UNT Digital Library
Application of Advanced Reservoir Characterization, Simulation, and Production Optimization Strategies to Maximize Recovery in Slope, and Basin Clastic Reservoirs, West Texas (Delaware Basin)
The objective of this Class 3 project is to demonstrate that detailed reservoir characterization of slope and basin clastic reservoirs in sandstones of the Delaware Mountain Group in the Delaware Basin of West Texas and New Mexico is a cost effective way to recover a higher percentage of the original oil in place through strategic placement of infill wells and geologically based field development. Project objectives are divided into two main phases. The original objectives of the reservoir-characterization phase of the project were (1) to provide a detailed understanding of the architecture and heterogeneity of two representative fields of the Delaware Mountain Group, Geraldine Ford and Ford West, which produce from the Bell Canyon and Cherry Canyon Formations, respectively, (2) to chose a demonstration area in one of the fields, and (3) to simulate a CO 2 flood in the demonstration area. The Bureau's industry partner for the initial Phase 1 of the project was Conoco, Inc.. After the reservoir characterization and simulation of an area at the northern end of the Ford Geraldine unit were completed, Conoco decided not to proceed to Phase 2, installation of a CO 2 flood in the demonstration area. This decision by Conoco provides …
Date:
July 31, 1998
Creator:
Dutton, Shirley P.
Object Type:
Report
System:
The UNT Digital Library