Partner
Oklahoma Historical Society
172
UNT Libraries Government Documents Department
103
UNT Libraries Special Collections
73
Texas Historical Commission
18
Sterling Municipal Library
9
Carl Albert Congressional Research and Studies Center
8
UNT Libraries
5
Comanche Public Library
4
Keystone Crossroads Historical Society
4
UNT Music Library
4
74 More
Collection
Texas Digital Newspaper Program
135
Oklahoma Publishing Company Photography Collection
90
Office of Scientific & Technical Information Technical Reports
79
Oklahoma Digital Newspaper Program
63
Tocker Foundation Grant
58
KXAS-NBC 5 News Collection
49
Jim Argo Collection
30
THC National Register Collection
18
Chickasha Newspaper Collection
13
Congressional Research Service Reports
12
118 More
Degree Department
Country
States
Decade
Month
Day
Language
523 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
523
next
Airline Deregulation: Changes in Airfares, Service Quality, and Barriers to Entry
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed and updated its previous work on airfares and service and reexamined the effect that certain barriers have had on these measures, focusing on: (1) how airfares have changed since 1990 for travel to and from 171 airports serving various U.S. communities; (2) how the quality of air service has changed since 1978 for travel to and from these airports; and (3) the extent to which certain barriers to entry--restrictive gate-leasing arrangements, controls on the number of allowable takeoffs and landings at some airports, and the limits on the distance that flights from some airports can be--influence competition at affected airports."
Date:
March 4, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 123, No. 40, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
March 4, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 99, No. 303, Ed. 1 Thursday, March 4, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
APS brochure -- Changing the face of energy
In the quest to derive energy from renewable resources, NREL scientists pursue disciplines ranging from materials science to structural dynamics to condensed matter physics. Physics is at the core of making this transition to a renewable energy world. The role of light/matter interaction in physics will continue to dominate in the 21st century.
Date:
March 4, 1999
Creator:
Cook, G.
Object Type:
Book
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 107, Ed. 1 Thursday, March 4, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Biofuel News, Winter 1998, Vol. 2, No. 1
This issue of Biofuels News contains two articles. The first focuses on the art and science of bioenergy project financing using the example of three companies planning biomass-to-ethanol plants. The second highlights the objectives and activities of the five Regional Biomass Energy Programs (RBEP) within the US DOE.
Date:
March 4, 1999
Creator:
Woodward, S.
Object Type:
Book
System:
The UNT Digital Library
Bogata News (Bogata, Tex.), Vol. 88, No. 43, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 109, No. 60, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
March 4, 1999
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Characterization and Qualification of a Precision Diamond Saw
A precision diamond saw was characterized and qualified for production using the MCCS Encryption Translator (MET) network. This characterization was performed in three steps. First the equipment was evaluated and characterized, and then a process was developed and characterized to saw cofire networks. Finally, the characterized process was qualified for production using the MET network. During the development of the low-temperature cofired ceramic (LTCC) processes needed to build the MCCS Encryption Translator (MET) network, a problem was uncovered. The laser process planned for scribing and separating was found to weaken the LTCC material by about 30%. A replacement process was needed, and precision diamond sawing was chosen. During the equipment evaluation and characterization, several parameters were investigated. These were cut depth, feed rate, spindle speed, and saw blade thickness. Once these were understood the process was then developed. Initially 24 variables were identified for the process, and eventually 12 of these variables were found to be critical. These variables were then adjusted until a process envelope was found that produced acceptable product. Finally parameters were chosen from the middle of the process envelope for production. With the production process set, the next step was to qualify it for production. Two …
Date:
March 4, 1999
Creator:
Morgenstern, H. A.
Object Type:
Report
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 150, No. 2, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
March 4, 1999
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 119, No. 9, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Kisic, Theresa
Object Type:
Newspaper
System:
The Portal to Texas History
Deep Level Defect Studies in MOCVD-Grown In(x)Ga(1-x)As(1-y)N(y) Films Lattice-Matched to GaAs
Deep level defects in MOCVD-grown, unintentionally doped p-type InGaAsN films lattice matched to GaAs were investigated using deep level transient spectroscopy (DLTS) measurements. As-grown p-InGaAsN showed broad DLTS spectra suggesting that there exists a broad distribution of defect states within the band-gap. Moreover, the trap densities exceeded 10{sup 15} cm{sup {minus}3}. Cross sectional transmission electron microscopy (TEM) measurements showed no evidence for threading dislocations within the TEM resolution limit of 10{sup 7} cm{sup {minus}2}. A set of samples was annealed after growth for 1800 seconds at 650 C to investigate the thermal stability of the traps. The DLTS spectra of the annealed samples simplified considerably, revealing three distinct hole trap levels with energy levels of 0.10 eV, 0.23 eV, and 0.48 eV above the valence band edge with trap concentrations of 3.5 x 10{sup 14} cm{sup {minus}3}, 3.8 x 10{sup 14} cm {sup {minus}3}, and 8.2 x 10{sup 14} cm{sup {minus}3}, respectively. Comparison of as-grown and annealed DLTS spectra showed that post-growth annealing effectively reduced the total trap concentration by an order of magnitude across the bandgap. However, the concentration of a trap with an energy level of 0.48 eV was not affected by annealing indicating a higher thermal stability …
Date:
March 4, 1999
Creator:
Allerman, A. A.; Boeckl, J. J.; Jones, E. D.; Kaplar, R. J.; Kurtz, S. R.; Kwon, D. et al.
Object Type:
Article
System:
The UNT Digital Library
Determining Two-Port S-Parameters from a One-Port Measurement Using a Novel Impedance-State Test Chip
A novel custom high-speed test chip and data reduction technique that allows for the accurate determination of the two-port S-parameters of a passive network from a set of one-port measurements is presented. A typical application for this technique is high-speed integrated circuit package characterization where one-port is of a microelectronic size scale and inside the package. The test chip is designed to operate up to 20 GHz.
Date:
March 4, 1999
Creator:
Hietala, V.M.
Object Type:
Article
System:
The UNT Digital Library
Development of Composite Honeycomb and Solid Laminate Reference Standards to Aid Aircraft Inspections
The rapidly increasing use of composites on commercial airplanes coupled with the potential for economic savings associated with their use in aircraft structures means that the demand for composite materials technology will continue to increase. Inspecting these composite structures is a critical element in assuring their continued airworthiness. The FAA's Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair Committee (CACRC), is developing a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed. A suite of 64 honeycomb panels, representing the bounding conditions of honeycomb construction on aircraft, were inspected using a wide array of NDI techniques. An analysis of the resulting data determined the variables that play a key role in setting up NDT equipment. This has resulted in a prototype set of minimum honeycomb reference standards that include …
Date:
March 4, 1999
Creator:
Dorrell, L. & Roach, D.
Object Type:
Article
System:
The UNT Digital Library
Disaster Assistance: Information on the Cost-Effectiveness of Hazard Mitigation Projects
A statement of record issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed how the Federal Emergency Management Agency (FEMA) ensures the cost-effectiveness of projects funded under the Hazard Mitigation Grant Program."
Date:
March 4, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Drug Control: Update on U.S.-Mexican Counternarcotics Activities
Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the counternarcotics efforts of the United States and Mexico, focusing on: (1) Mexico's efforts in addressing the drug threat; and (2) the status of U.S. counternarcotics assistance provided to Mexico."
Date:
March 4, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 9, No. 26, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Wright, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Effects of Materials Parameters and Design Details on the Fatigue of Composite Materials for Wind Turbine Blades
This paper presents an analysis of the results of nine years of fatigue testing represented in the USDOE/Montana State University (DOE/MSU) Composite Materials Fatigue Database. The focus of the program has been to explore a broad range of glass-fiber-based materials parameters encompassing over 4500 data points for 130 materials systems. Significant trends and transitions in fatigue resistance are shown as the fiber content and fabric architecture are varied. The effects of structural details including ply drops, bonded stiffeners, and other geometries that produce local variations in fiber packing and geometry are also described. Fatigue tests on composite beam structures are then discussed; these show generally good correlation with coupon fatigue data in the database. Goodman diagrams for fatigue design are presented, and their application to predicting the service lifetime of blades is described.
Date:
March 4, 1999
Creator:
Mandell, J.F.; Samborsky, D.D. & Sutherland, H.J.
Object Type:
Article
System:
The UNT Digital Library
Electra Star-News (Electra, Tex.), Vol. 94, No. 29, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, March 4, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Faculty and Guest Artist Recital: 1999-03-04 - Chamber Music International
Access:
Use of this item is restricted to the UNT Community
Faculty and guest artist concert performed at the UNT College of Music Winspear Hall.
Date:
March 4, 1999
Creator:
Chamber Music International
Object Type:
Sound
System:
The UNT Digital Library
Finite Element Modeling of Suspended Particle Migration in Non-Newtonian Fluids
Shear-induced migration of particles is studied during the slow flow of suspensions of spheres (particle volume fraction {phi} = 0.50) in an inelastic but shear-thinning, suspending fluid in flow between counterrotating concentric cylinders, The conditions are such that nonhydrodynamic effects are negligible. The movement of particles away from the high shear rate region is more pronounced than in a Newtonian suspending liquid. We test a continuum constitutive model for the evolution of particle concentration in a flowing suspension proposed by Phillips et al. (1992) by using shear-thinning, suspending fluids. The fluid constitutive equation is Carreau-like in its shear-thinning behavior but also varies with the local particle concentration. The model is compared with the experimental data gathered with nuclear magnetic resonance (NMR) imaging.
Date:
March 4, 1999
Creator:
Altobelli, S.; Baer, T.; Mondy, L.; Rao, R. & Stephens, T.
Object Type:
Article
System:
The UNT Digital Library
Garber Billings News (Garber, Okla.), Vol. 99, No. 21, Ed. 1 Thursday, March 4, 1999
Weekly newspaper from Garber, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 4, 1999
Creator:
Hogan, Vickie Lee
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Geologic and Hydrogeologic Setting of the Waste Isolation Pilot Plant
The Waste Isolation Pilot Plant (WIPP) is a mined repository constructed by the US Department of Energy for the permanent disposal of transuranic wastes generated since 1970 by activities related to national defense. The WIPP is located 42 km east of Carlsbad, New Mexico, in bedded salt (primarily halite) of the Late Permian (approximately 255 million years old) Salado Formation 655 m below the land surface. Characterization of the site began in the mid-1970s. Construction of the underground disposal facilities began in the early 1980s, and the facility received final certification from the US Environmental Protection Agency in May 1998. Disposal operations are planned to begin following receipt of a final permit from the State of New Mexico and resolution of legal issues. Like other proposed geologic repositories for radioactive waste, the WIPP relies on a combination of engineered and natural barriers to isolate the waste from the biosphere. Engineered barriers at the WIPP, including the seals that will be emplaced in the access shafts when the facility is decommissioned, are discussed in the context of facility design elsewhere in this volume. Physical properties of the natural barriers that contribute to the isolation of radionuclides are discussed here in the …
Date:
March 4, 1999
Creator:
Swift, Peter N. & Corbet, Thomas F.
Object Type:
Article
System:
The UNT Digital Library