Resource Type
Partner
Collection
Texas Digital Newspaper Program
789
Oklahoma Digital Newspaper Program
360
Tocker Foundation Grant
301
Abilene Library Consortium
104
The Oklahoma City Times
51
Office of Scientific & Technical Information Technical Reports
40
The Abilene Reporter
33
Chickasha Newspaper Collection
29
Denton County Newspapers Collection
24
Denton Record-Chronicle
23
276 More
Serial/Series Title
Country
States
Decade
Month
Day
Language
1,201 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
1,201
next
The Daily Index. (Mineral Wells, Tex.), Vol. 3, No. 297, Ed. 1 Thursday, April 30, 1903
Daily newspaper from Mineral Wells, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1903
Creator:
Newton, W. B.
Object Type:
Newspaper
System:
The Portal to Texas History
Acoustic Energy: An Innovative Technology for Stimulating Oil Wells
The objective of this investigation was to demonstrate the effectiveness of sonication in reducing the viscosity of heavy crude oils. Sonication is the use of acoustic or sound energy to produce physical and/or chemical changes in materials, usually fluids. The goal of the first project phase was to demonstrate a proof of concept for the project objective. Batch tests of three commercially available, single-weight oils (30-, 90-, and 120-wt) were performed in the laboratory. Several observations and conclusions were made from this series of experiments. These include the following: (1) In general, the lower the acoustic frequency, the greater the efficiency in reducing the viscosity of the oils; (2) Sonication treatment of the three oils resulted in reductions in viscosity that ranged from a low of 31% to a high of 75%; and (3) The results of the first phase of the project successfully demonstrated that sonication could reduce the viscosity of oils of differing viscosity. The goal of the second project phase was to demonstrate the ability of sonication to reduce the viscosity of three crude oils ranging from a light crude to a heavy crude. The experiments also were designed to examine the benefits of two proprietary chemical …
Date:
April 30, 2006
Creator:
Edgar, Dorland E.; Peters, Robert W.; Johnson, Donald O.; Paulsen, P. David & Roberts, Wayne
Object Type:
Report
System:
The UNT Digital Library
The Elk City Daily News (Elk City, Okla.), Vol. 27, No. 181, Ed. 1 Tuesday, April 30, 1957
Daily newspaper from Elk City, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 30, 1957
Creator:
Wells, Virgil
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Elk City Daily News (Elk City, Okla.), Vol. 31, No. 182, Ed. 1 Sunday, April 30, 1961
Daily newspaper from Elk City, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 30, 1961
Creator:
Wells, Virgil
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Letter from Ray I. Mehan to I. H. Kempner, April 30, 1948]
Letter from Ray I. Mehan to I. H. Kempner discussing cotton bale stock and explaining that there is no new business.
Date:
April 30, 1948
Creator:
Mehan, Ray I.
Object Type:
Letter
System:
The Portal to Texas History
The Elk City Daily News (Elk City, Okla.), Vol. 29, No. 185, Ed. 1 Thursday, April 30, 1959
Daily newspaper from Elk City, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 30, 1959
Creator:
Wells, Virgil
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Recovery of bypassed oil in the Dundee Formation using horizontal drains. Annual report, May 1, 1995--April 30, 1996
The principal objective of this project is to demonstrate the feasibility and economics success of producing oil from abandoned or nearly abandoned fields in the Dundee Formation of Central Michigan using horizontal drilling technology. The project is a cooperative venture between Michigan Technological University (MTU), Western Michigan University (WMU), and Terra Energy (now Cronus Development Co.). During the fall of 1995, the demonstration well for this project, the TOW No. 1-3 well in Crystal Field, Montcalm County, Michigan, was completed in the Dundee Formation and for the first three months of operation produced 50 bbl/day oil with no water cut. Because surface facilities were inadequate to handle full production, the well was produced for 12 hrs/day and shut in for 12 hrs/day. In January, 1996, new surface Facilities were completed and production was raised to 100 bbl/day. Daily production has varied from about 75 to 100 BOPD since that time. To date, the well has produced over 10, 000 bbls. The water cut remains at 0% and pressure has been maintained at 1445 psi by an active water drive. If expectations are met, the well will pay out in less than 1 year and continue on production for at least …
Date:
April 30, 1996
Creator:
Wood, J.R.
Object Type:
Report
System:
The UNT Digital Library
Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: January-March 2002
Three major goals were accomplished during this phase. First, a study was completed of the effects of stress-induced changes in anisotropic elastic moduli in sandstone. Second, a new method for measuring the anisotropic poroelastic moduli from acoustic data was developed. Third, a series of triaxial experiments were conducted on unconsolidated sands to identify pressure/stress conditions where liquefaction occurs under high confining pressures. Stress-induced changes in anisotropic Young's moduli and shear moduli were observed during deformational pathway experiments. A new method was made for the acquisition of compressional and shear wave velocities along a series of 3-dimensional raypaths through a core sample as it is subjected to deformation. Three different deformational pathway experiments were conducted. During the hydrostatic deformation experiment, little or no anisotropy was observed in either the Young's moduli or shear moduli. Significant deformational anisotropies were observed in both moduli during the uniaxial strain test and the triaxial compression experiment but each had a different nature. During the triaxial experiment the axial and lateral Young's moduli and shear moduli continued to diverge as load was applied. During the uniaxial strain experiment the anisotropy was ''locked in'' early in the loading phase but then remained steady as both the confining …
Date:
April 30, 2002
Creator:
Scott Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Object Type:
Report
System:
The UNT Digital Library
The Taylor County News. (Abilene, Tex.), Vol. 2, No. 7, Ed. 1 Friday, April 30, 1886
Weekly newspaper from Abilene, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1886
Creator:
Lowry, James A.
Object Type:
Newspaper
System:
The Portal to Texas History
Water-related Issues Affecting Conventional Oil and Gas Recovery and Potential Oil-Shale Development in the Uinta Basin, Utah
Saline water disposal is one of the most pressing issues with regard to increasing petroleum and natural gas production in the Uinta Basin of northeastern Utah. Conventional oil fields in the basin provide 69 percent of Utah?s total crude oil production and 71 percent of Utah?s total natural gas, the latter of which has increased 208% in the past 10 years. Along with hydrocarbons, wells in the Uinta Basin produce significant quantities of saline water ? nearly 4 million barrels of saline water per month in Uintah County and nearly 2 million barrels per month in Duchesne County. As hydrocarbon production increases, so does saline water production, creating an increased need for economic and environmentally responsible disposal plans. Current water disposal wells are near capacity, and permitting for new wells is being delayed because of a lack of technical data regarding potential disposal aquifers and questions concerning contamination of freshwater sources. Many companies are reluctantly resorting to evaporation ponds as a short-term solution, but these ponds have limited capacity, are prone to leakage, and pose potential risks to birds and other wildlife. Many Uinta Basin operators claim that oil and natural gas production cannot reach its full potential until a …
Date:
April 30, 2012
Creator:
Berg, Michael Vanden; Anderson, Paul; Wallace, Janae; Morgan, Craig & Carney, Stephanie
Object Type:
Report
System:
The UNT Digital Library
Appalachian Basin Low-Permeability Sandstone Reservoir Characterizations
A preliminary assessment of Appalachian basin natural gas reservoirs designated as 'tight sands' by the Federal Energy Regulatory Commission (FERC) suggests that greater than 90% of the 'tight sand' resource occurs within two groups of genetically-related units; (1) the Lower Silurian Medina interval, and (2) the Upper Devonian-Lower Mississippian Acadian clastic wedge. These intervals were targeted for detailed study with the goal of producing geologic reservoir characterization data sets compatible with the Tight Gas Analysis System (TGAS: ICF Resources, Inc.) reservoir simulator. The first phase of the study, completed in September, 1991, addressed the Medina reservoirs. The second phase, concerned with the Acadian clastic wedge, was completed in October, 1992. This report is a combined and updated version of the reports submitted in association with those efforts. The Medina interval consists of numerous interfingering fluvial/deltaic sandstones that produce oil and natural gas along an arcuate belt that stretches from eastern Kentucky to western New York. Geophysical well logs from 433 wells were examined in order to determine the geologic characteristics of six separate reservoir-bearing intervals. The Acadian clastic wedge is a thick, highly-lenticular package of interfingering fluvial-deltaic sandstones, siltstones, and shales. Geologic analyses of more than 800 wells resulted in …
Date:
April 30, 1993
Creator:
Boswell, Ray; Pool, Susan; Pratt, Skip & Matchen, David
Object Type:
Report
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 159, No. 10, Ed. 1 Wednesday, April 30, 2008
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
April 30, 2008
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Automatic Transformation of MPI Programs to Asynchronous, Graph-Driven Form
The goals of this project are to develop new, scalable, high-fidelity algorithms for atomic-level simulations and program transformations that automatically restructure existing applications, enabling them to scale forward to Petascale systems and beyond. The techniques enable legacy MPI application code to exploit greater parallelism though increased latency hiding and improved workload assignment. The techniques were successfully demonstrated on high-end scalable systems located at DOE laboratories. Besides the automatic MPI program transformations efforts, the project also developed several new scalable algorithms for ab-initio molecular dynamics, including new massively parallel algorithms for hybrid DFT and new parallel in time algorithms for molecular dynamics and ab-initio molecular dynamics. These algorithms were shown to scale to very large number of cores, and they were designed to work in the latency hiding framework developed in this project. The effectiveness of the developments was enhanced by the direct application to real grand challenge simulation problems covering a wide range of technologically important applications, time scales and accuracies. These included the simulation of the electronic structure of mineral/fluid interfaces, the very accurate simulation of chemical reactions in microsolvated environments, and the simulation of chemical behavior in very large enzyme reactions.
Date:
April 30, 2013
Creator:
Baden, Scott B.; Weare, John H. & Bylaska, Eric J.
Object Type:
Report
System:
The UNT Digital Library
ARTI Refrigerant Database
The Refrigerant Database consolidates and facilitates access to information to assist industry in developing equipment using alternative refrigerants. The underlying purpose is to accelerate phase out of chemical compounds of environmental concern. The database provides bibliographic citations and abstracts for publications that may be useful in research and design of air-conditioning and refrigeration equipment. The complete documents are not included. The database identifies sources of specific information on R-32, R-123, R-124, R-125, R-134, R-134a, R-141b, R-142b, R-143a, R-152a, R-245ca, R-290 (propane), R-717 (ammonia), ethers, and others as well as azeotropic and zeotropic blends of these fluids. It addresses lubricants including alkylbenzene, polyalkylene glycol, ester, and other synthetics as well as mineral oils. It also references documents addressing compatibility of refrigerants and lubricants with metals, plastics, elastomers, motor insulation, and other materials used in refrigerant circuits. Incomplete citations or abstracts are provided for some documents to accelerate availability of the information and will be completed or replaced in future updates.
Date:
April 30, 1993
Creator:
Cain, J. M.
Object Type:
Report
System:
The UNT Digital Library
ARTI Refrigerant Database
The Refrigerant Database consolidates and facilitates access to information to assist industry in developing equipment using alternative refrigerants. The underlying purpose is to accelerate phase out of chemical compounds of environmental concern. The database provides bibliographic citations and abstracts for publications that may be useful in research and design of air-conditioning and refrigeration equipment. The complete documents are not included. The database identifies sources of specific information on R-32, R-123, R-124, R-125, R-134, R-134a, R-141b, R-142b, R-143a, R-152a, R-245ca, R-290 (propane), R-717 (ammonia), ethers, and others as well as azeotropic and zeotropic blends of these fluids. It addresses lubricants including alkylbenzene, polyalkylene glycol, ester, and other synthetics as well as mineral oils. It also references documents addressing compatibility of refrigerants and lubricants with metals, plastics, elastomers, motor insulation, and other materials used in refrigerant circuits. Incomplete citations or abstracts are provided for some documents to accelerate availability of the information and will be completed or replaced in future updates.
Date:
April 30, 1993
Creator:
Cain, J.M. (Calm (James M.), Great Falls, VA (United States))
Object Type:
Report
System:
The UNT Digital Library
Palo Pinto County Star (Palo Pinto, Tex.), Vol. 60, No. 44, Ed. 1 Friday, April 30, 1937
Weekly newspaper from Palo Pinto, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1937
Creator:
Dunbar, Mary Whatley
Object Type:
Newspaper
System:
The Portal to Texas History
Palo Pinto County Star (Palo Pinto, Tex.), Vol. 60, No. 44, Ed. 1 Friday, April 30, 1937
Weekly newspaper from Palo Pinto, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1937
Creator:
Dunbar, Mary Whatley
Object Type:
Newspaper
System:
The Portal to Texas History
The Daily Herald. (Weatherford, Tex.), Vol. 13, No. 92, Ed. 1 Tuesday, April 30, 1912
Daily newspaper from Weatherford, Texas that includes local, state and national news along with advertising.
Date:
April 30, 1912
Creator:
Bell, Tom H.
Object Type:
Newspaper
System:
The Portal to Texas History
Brazos Tributary (Palo Pinto, Tex.), Vol. 1, No. 24, Ed. 1 Thursday, April 30, 1970
Weekly newspaper from Palo Pinto, Texas covering news from Palo Pinto County along with advertising.
Date:
April 30, 1970
Creator:
Hinkle, Robert N.
Object Type:
Newspaper
System:
The Portal to Texas History
Jacksboro Gazette-News (Jacksboro, Tex.), Vol. 93, No. 49, Ed. 1 Monday, April 30, 1973
Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 30, 1973
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Daily Herald (Weatherford, Tex.), Vol. 23, No. 393, Ed. 1 Monday, April 30, 1923
Daily newspaper from Weatherford, Texas that includes local, state and national news along with advertising.
Date:
April 30, 1923
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Jacksboro Gazette-News (Jacksboro, Tex.), Vol. 90, No. 48, Ed. 1 Thursday, April 30, 1970
Weekly newspaper from Jacksboro, Texas that includes local, state, and national news along with extensive advertising.
Date:
April 30, 1970
Creator:
McGee, Mabel Claire
Object Type:
Newspaper
System:
The Portal to Texas History
The Olney Enterprise (Olney, Tex.), Vol. 33, No. 12, Ed. 1 Friday, April 30, 1943
Weekly newspaper from Olney, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1943
Creator:
Warren, Len C.
Object Type:
Newspaper
System:
The Portal to Texas History
Stephenville Empire-Tribune (Stephenville, Tex.), Vol. 105, No. 103, Ed. 1 Tuesday, April 30, 1974
Daily newspaper from Stephenville, Texas that includes local, state, and national news along with advertising.
Date:
April 30, 1974
Creator:
Morehart, John
Object Type:
Newspaper
System:
The Portal to Texas History