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Office of Scientific & Technical Information Technical Reports
257
Congressional Research Service Reports
144
Texas Patents
55
Technical Report Archive and Image Library
41
Texas Attorney General Opinions
32
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25
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13
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Tests in the variable-density wind tunnel of the NACA 23012 airfoil with plain and split flaps
From Summary: "Section characteristics for use in wing design are presented for the NACA 23012 airfoil with plain and split flaps of 20 percent wing chord at a value of the effective Reynolds number of about 8,000,000. The flap deflections covered a range from 60 degrees upward to 75 degrees downward for the plain flap and from neutral to 90 degrees downward for the split flap. The split flap was aerodynamically superior to the plain flap in producing high maximum lift coefficients and in having lower profile-drag coefficients at high lift coefficients."
Date:
January 21, 1938
Creator:
Abbott, Ira H. & Greenberg, Harry
Object Type:
Report
System:
The UNT Digital Library
Tracer Developments: Results of Experimental Studies
Tracers can be used to monitor the movement of groundwaters and geothermal fluids and they can be used as a reference to quantify changes in fluid chemistry as a result of injection. Despite their potential importance to the geothermal operator, very few tracers are presently available and of those that are, little is known about their stability or behavior at the elevated temperatures that typify resources capable of electric power generation. During the past two years the University of Utah Research Institute has been involved in tracer research and testing, largely through the DOE Injection Research Program. The purpose of this paper is to summarize the results of these laboratory and field investigations.
Date:
January 21, 1986
Creator:
Adams, M. C.; Ahn, J. H.; Bentley, H.; Moore, J. N. & Veggeberg, S.
Object Type:
Article
System:
The UNT Digital Library
Rail-Joint.
Patent for improvements to the joints for railway rails to prevent "bumping of the wheels against the ends of rails and the cross ties adjacent to the joints" (lines 16-18) including illustrations.
Date:
January 21, 1908
Creator:
Adams, Powell O.
Object Type:
Patent
System:
The Portal to Texas History
Lebanon: Background and U.S. Relations
This report provides an overview of Lebanese politics, recent events in Lebanon, and current issues in U.S.-Lebanon relations and will be updated to reflect major developments.
Date:
January 21, 2009
Creator:
Addis, Casey L.
Object Type:
Report
System:
The UNT Digital Library
Purdue Solar Energy Utilization Laboratory
The objective of this project is to establish and set-up a laboratory that will facilitate research and development of new low-cost and high-efficiency solar energy utilization technologies at Purdue University. The outcome will help spur the creation of solar energy start-up companies and eventually a solar energy industry in Indiana that can help fulfill the growing national demand for solar energy.
Date:
January 21, 2014
Creator:
Agrawal, Rakesh
Object Type:
Report
System:
The UNT Digital Library
International Trade and Finance: Key Policy Issues for the 112th Congress
Report concerning a variety of issues faced by the 112th Congress. Topics include trade negotiations with South Korea, Panama, Colombia, and China, export controls and sanctions, and international financial institutions.
Date:
January 21, 2011
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Transatlantic Regulatory Cooperation: Background and Analysis
This report discusses commercial ties between the United States and the 27-member European Union. While ties between the U.S. and EU are substantial, growing, and mutually beneficial, differences in regulatory approaches limit an even more integrated marketplace from developing. To deal with this situation, a variety of government-to-government efforts have been created to dismantle existing regulatory barriers and to prevent new ones from emerging.
Date:
January 21, 2010
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Nucleon-Meson Cascade Calculations: The Star Density Produced by a 24-Gev Proton Beam in Heavy Concrete
The nuclear star density produced by a 24-Bev proton beam in a material having approximately the properties of heavy concrete is calculated. A comparison is made with experimental measurements made at CERN; but, since the quantity that can be calculated is not the same as that measured, no firm conclusions can be drawn. Proton, neutron, pion, and muon intensities are plotted vs. distance as are star densities. (auth)
Date:
January 21, 1963
Creator:
Alsmiller, R. G., Jr. & Murphy, J. E.
Object Type:
Report
System:
The UNT Digital Library
Geothermal Two-Phase Wellbore Flow: Pressure Drop Correlations and Flow Pattern Transitions
In this paper we present some basic concepts of two-phase flow and review the Orkiszewski (1967) correlations which have been suggested by various investigators to perform well for geothermal wellbore flow situations. We also present a flow regime map based on the transition criteria used by Orkiszewski (1967) and show that most geothermal wells flow under slug flow regime. We have rearranged bubble- to slug-flow transition criterion used by Orkiszewski (1967) to show that the transition depends on the dimensionless pipe diameter number in addition to dimensionless liquid and gas velocity numbers. Our aim is also to identify what research may lead to improvements in two-phase pressure drop calculations for geothermal wellbore flow.
Date:
January 21, 1986
Creator:
Ambastha, A. K. & Gudmundsson, J. S.
Object Type:
Article
System:
The UNT Digital Library
Pressure Profiles in Two-Phase Geothermal Wells: Comparison of Field Data and Model Calculations
Increased confidence in the predictive power of two-phase correlations is a vital part of wellbore deliverability and deposition studies for geothermal wells. Previously, the Orkiszewski (1967) set of correlations has been recommended by many investigators to analyze geothermal wellbore performance. In this study, we use measured flowing pressure profile data from ten geothermal wells around the world, covering a wide range of flowrate, fluid enthalpy, wellhead pressure and well depth. We compare measured and calculated pressure profiles using the Orkiszewski (1967) correlations.
Date:
January 21, 1986
Creator:
Ambastha, A. K. & Gudmundsson, J. S.
Object Type:
Article
System:
The UNT Digital Library
Fire Alarm System
Patent for a new and improved fire alarm system. This alarm system will allow the room on fire to be identified and alert the fire department that there is a fire in that house. Using a minimum number of wires, for safety, this alarm signals only one bell no mater the room on fire.There is also a self test feature within this system.
Date:
January 21, 1915
Creator:
Ammons, John B.
Object Type:
Patent
System:
The Portal to Texas History
The European Parliament
Report that discusses the construction and history of the European Parliament (EP), its role in functions of the EU as well as internationally, various international supports and criticisms of the EP, and the EP's ties with the U.S. Congress.
Date:
January 21, 2011
Creator:
Archick, Kristin & Mix, Derek E.
Object Type:
Report
System:
The UNT Digital Library
Response of a Rotating Propeller to Aerodynamic Excitation
"The flexural vibration of a rotating propeller blade with clamped shank is analyzed with the object of presenting, in matrix form, equations for the elastic bending moments in forced vibration resulting from aerodynamic forces applied at a fixed multiple of rotational speed. Matrix equations are also derived which define the critical speeds end mode shapes for any excitation order and the relation between critical speed and blade angle. Reference is given to standard works on the numerical solution of matrix equations of the forms derived" (p. 1).
Date:
January 21, 1949
Creator:
Arnoldi, Walter E.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Technical and Legal Evaluation of Disposing of Nonhazardous Oil Field Waste into Salt Caverns
This report presents an initial evaluation of the suitability, feasibility, and legality of using salt caverns for disposal of nonhazardous oil field wastes. Given the preliminary and general nature of this report, we recognize that some of our findings and conclusions maybe speculative and subject to change upon further research on this topic.
Date:
January 21, 1999
Creator:
Ayers, Robert C.; Caudle, Dan; Elcock, Deborah; Raivel, Mary; Veil, John & Grunewald, Ben
Object Type:
Report
System:
The UNT Digital Library
Energy Policy: Legislative Proposals in the 109th Congress
While introduction of energy legislation in the 109th Congress is pending, it remains unclear what its course may be. Some believe that the results of the fall 2004 election have heightened prospects for opening up the Arctic National Wildlife Refuge (ANWR) to oil and gas development, and the Republican leadership has indicated that ANWR is to be included in the budget resolution that will come before Congress. Senate Energy and Natural Resources Committee Chairman Pete Domenici has indicated that the committee will mark up a comprehensive bill in February. However, Senator Domenici also expressed openness to considering individual bills; he and others are interested in legislation to establish a long-term leasing plan for natural gas resources.
Date:
January 21, 2005
Creator:
Bamberger, Robert L. & Behrens, Carl E.
Object Type:
Report
System:
The UNT Digital Library
The Relation of Quantum Requirement in Photosynthesis toRespiration
1. The r a t e s of photosynthesis and subsequent respiration of Chlorella pyrenoidosa were measured using an oxygen analyzer (sensitive to paramagnetism). The energy absorbed during the photosynthesis periods was determined and the quantum requirement was calculated. 2. Dark respiration r a t e was found to depend on the r a t e of light absorption during the period of photosynthesis, and increased with increasing photosynthesis rate. 3 . The quantum requirement, corrected for respiration, varied from 4. 9 ( a t a ratio of photosynthesis to respiration of 1.4) to 6. 9 (at a r a t i o of 12). Both uncorrected and corrected quantum requirements approach an experimental value of 7. 4 a t high light intensity. 4. The lower quantum requirement obtained a t low light intensity is believed to be due to a relatively greater importance of contribution of energy from respiration t o photosynthesis. An expression i s derived for the relation between this contribution and the enhancement of dark respiration due to the level of photosynthesis to which the plants a r e conditioned. 5. Attempts to obtain the blue -light stimulation of photosynthesis with algae photosynthesizing in r e …
Date:
January 21, 1955
Creator:
Bassham, James A.; Shibata, Kazuo & Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Reservoir Behaviour in a Stimulated Hot Dry Rock System
Research into the stimulation of hot dry rock (HDR) systems in crystalline rock has been underway in Cornwall, England for several years. Two deviated wells were drilled to a depth of 2100 m in 1981 with an interwell separation of 300 m. These wells were connected by massive hydraulic injections using water, but the interconnection was insufficient to permit long term circulation without excessive water losses. In 1985 a third well was drilled to a depth of 2600 m in a direction chosen from the analysis of the reservoir behavior during the previous circulation. A massive stimulation (200 l/s, 75 bbl/min) of gel was used to connect the wells and circulation was re-established in August 1985. Reservoir models have been developed from hydraulic analyses, thermal behavior, microseismic mapping, tracer dispersion and chemical modeling. The system behaves like an interconnected network of flow paths with a few dominant routes acting as flow conduits. The storage is associated with pressure dependent joint compliance, but it is isolated from the dominant flow paths. No unique physical model has yet been derived but the various techniques have been used to establish constraints on the geometry and nature of the heat transfer regions. The experiments …
Date:
January 21, 1986
Creator:
Batchelor, Anthony S.
Object Type:
Article
System:
The UNT Digital Library
Measurements of Ionizing Radiation Doses Induced by High Irradiance Laser on Targets in LCLS MEC Instrument
None
Date:
January 21, 2014
Creator:
Bauer, J.; Liu, J. C.; Prinz, A. A.; Rokni, S.; Tran, H.; Woods, M. et al.
Object Type:
Report
System:
The UNT Digital Library
Combined Rein-Holder and Whip-Socket
Patent for a combined rein holder and whip socket in the dashboard of vehicles.
Date:
January 21, 1913
Creator:
Bean, Jesse Alfonso
Object Type:
Patent
System:
The Portal to Texas History
Report on the reconnaissance resistivity survey in the East Mesa area, Imperial County, California for U. S. Department of the Interior, Bureau of Reclamation
A section of notes on geothermal exploration using the resistivity method precedes the main body of the paper. Field data from the Broadlands Area of New Zealand, Java, and the Imperial Valley, California are included. The reconnaissance resistivity survey recently completed in the East Mesa Area confirmed that a broad zone of low resistivities at depth extends through the area in a NNW direction. The interpretation of the resistivity data and the location of the resistivity lows at depth is much less definite in the Imperial Valley than it is in other areas of geothermal exploration. This is due to the extremely low background level of resistivities. The low resistivities in the Imperial Valley are due to the high porosity of the sediments and the high salinity of the solutions contained within the rock. The expected decrease in resistivity due to elevated temperature is much more difficult to detect in this environment. Edges of the zones of low resistivities have been delineated in almost all directions. (JGB)
Date:
January 21, 1974
Creator:
Bell, B.S. & Hallof, P.G.
Object Type:
Report
System:
The UNT Digital Library
Towards a coherent theory of physics and mathematics.
None
Date:
January 21, 2002
Creator:
Benioff, P.
Object Type:
Article
System:
The UNT Digital Library
FINITE-ELEMENT ANALYSIS OF TWO METER DROP OF DEFENSE HIGH-LEVEL WASTE PACKAGE
None
Date:
January 21, 1997
Creator:
Bennet, S. M.
Object Type:
Report
System:
The UNT Digital Library
Final report. U.S. Department of Energy University Reactor Sharing Program
Activities supported at the MIT Nuclear Reactor Laboratory under the U.S. DOE University Reactor Sharing Program are reported for Grant DE FG02-95NE38121 (September 16, 1995 through May 31, 2002). These activities fell under four subcategories: support for research at thesis and post-doctoral levels, support for college-level laboratory exercises, support for reactor tours/lectures on nuclear energy, and support for science fair participants.
Date:
January 21, 2003
Creator:
Bernard, John A.
Object Type:
Report
System:
The UNT Digital Library
A Component Architecture for High-Performance Computing
The Common Component Architecture (CCA) provides a means for developers to manage the complexity of large-scale scientific software systems and to move toward a ''plug and play'' environment for high-performance computing. The CCA model allows for a direct connection between components within the same process to maintain performance on inter-component calls. It is neutral with respect to parallelism, allowing components to use whatever means they desire to communicate within their parallel ''cohort.'' We will discuss in detail the importance of performance in the design of the CCA and will analyze the performance costs associated with features of the CCA.
Date:
January 21, 2003
Creator:
Bernholdt, D E; Elwasif, W R; Kohl, J A & Epperly, T G W
Object Type:
Article
System:
The UNT Digital Library