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The North Texas Daily (Denton, Tex.), Vol. 84, No. 29, Ed. 1 Tuesday, October 19, 1999
Student newspaper from the University of North Texas in Denton, Texas that includes local, state, national, and campus news along with advertising. Formerly The Campus Chat.
Date:
October 19, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 84, No. 42, Ed. 1 Tuesday, October 19, 1999
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 19, 1999
Creator:
Wilmoth, Adam
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with Henry Freitas, October 19, 1999
The National Museum of the Pacific War presents an interview with Henry Freitas. Freitas joined the Navy in 1939. Freitas served as Fireman Second Class aboard the USS Tangier (AV-8) from April of 1941 to December of 1942. The Tangier picked up military personnel in Pearl Harbor and delivered them to combat areas. Freitas was aboard the Tangier when it was moored abaft the former battleship Utah at Pearl Harbor on 7 December 1941. Freitas describes in detail his duties during the attack. He helped rescue people out of the water and provided assistance where needed.
Date:
October 19, 1999
Creator:
Freitas, Henry
Object Type:
Text
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 203, Ed. 1 Tuesday, October 19, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 19, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Phonon Drag Dislocations at High Pressures
Phonon drag on dislocations is the dominant process which determines the flow stress of metals at elevated temperatures and at very high plastic deformation rates. The dependence of the phonon drag on pressure or density is derived using a Mie-Grueneisen equation of state. The phonon drag is shown to increase nearly linearly with temperature but to decrease with density or pressure. Numerical results are presented for its variation for shock-loaded copper and aluminum. In these cases, density and temperature increase simultaneously, resulting in a more modest net increase in the dislocation drag coefficient. Nevertheless, phonon drag increases by more than an order of magnitude during shock deformations which approach melting. Since the dependencies of elastic moduli and of the phonon drag coefficient on pressure and temperature are fundamentally different, the effect of pressure on the constitutive law for plastic deformation can not simply be accounted for by its effect on the elastic shear modulus.
Date:
October 19, 1999
Creator:
Wolfer, W. G.
Object Type:
Report
System:
The UNT Digital Library
Rains County Leader (Emory, Tex.), Vol. 112, No. 19, Ed. 1 Tuesday, October 19, 1999
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
October 19, 1999
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 85, No. 30, Ed. 1 Tuesday, October 19, 1999
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 19, 1999
Creator:
Horn, Richard A.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Sealy News (Sealy, Tex.), Vol. 112, No. 85, Ed. 1 Tuesday, October 19, 1999
Semiweekly newspaper from Sealy, Texas that includes local, state, and national news along with advertising.
Date:
October 19, 1999
Creator:
Chionsini, Brandi
Object Type:
Newspaper
System:
The Portal to Texas History
Steelhead Spawning Surveys Near Locke Island, Hanford Reach of the Columbia River
In 1997, the National Marine Fisheries Service (NMFS) listed upper Columbia River steelhead trout (Oncorhynchus znykiss) as endangered. This action affected management of land-use activities along and within the Hanford Reach of the Columbia River, which flows through the U.S. Department of Energy (DOE) Hanford Site. Steelhead covered in this listing include all naturally spawned populations of steel-head and their progeny in streams in the Columbia River Basin upstream from the Yakima River to the United States/Canada border. The NMFS has identified a general listing of activities that could potentially result in harm to steelhead (62 FR 43937, August 18, 1997). One of these concerns includes land-use changes resulting in mass wasting or surface erosion. Landslide activity along the White Bluffs on the east ,side of Locke Island has redirected river flow into the island where substantial erosion has occurred. This erosion has exposed important anthropological and archaeological resources that were previously buried on the island. The DOE is working with affected tribes and other agencies to develop a plan for addressing the erosion of Locke Island. As part of this effort, the U.S. Army Corps of Engineers has prepared an assessment of potential alternatives to stabilize the erosion, including …
Date:
October 19, 1999
Creator:
Geist, DR & Mueller, RP
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 186, Ed. 1 Monday, October 19, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 19, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 108, No. 22, Ed. 1 Monday, October 19, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 19, 1998
Creator:
Schwind, Jim & Looby, Edward
Object Type:
Newspaper
System:
The Portal to Texas History
Application of 2-D Simulations to Z-Pinch Experiment Design and Analysis
The successful 2-D simulations of z-pinch experiments (reproducing such features as the measured experimental current drive, radiation pulse shape, peak power and total radiated energy) can lead to a better understanding of the underlying physics in z-pinch implosions and to the opportunity to use such simulations in the analysis of experimental data and in the design of new experiments. Such use has been made with LANL simulations of experiments on the Sandia Saturn and Z accelerators. Applications have included ''vacuum'' and ''dynamic'' hohlraum experiments; variations in mass, radius and length; and ''nested'' array configurations. Notable examples include the explanation of the power/length results in reduced length pinches and the prediction of the current best power and pulsewidth nested array experiment. Examples of circumstances where the simulation results do not match the experiments will be given along with a discussion of opportunities for improved simulation results.
Date:
October 19, 1998
Creator:
Peterson, D. L.; Bowers, R. L.; Matuska, W.; Chandler, G. A.; Deeney, C.; Derzon, M. S. et al.
Object Type:
Article
System:
The UNT Digital Library
Basis for Interim Operation for the K-Reactor in Cold Standby
The Basis for Interim Operation (BIO) document for K Reactor in Cold Standby and the L- and P-Reactor Disassembly Basins was prepared in accordance with the draft DOE standard for BIO preparation (dated October 26, 1993).
Date:
October 19, 1998
Creator:
Shedrow, B.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 302, Ed. 1 Monday, October 19, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 19, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Monday, October 19, 1998
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 19, 1998
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Conformational Diversity in (Octaethylporphinato) (trichloroacetato)iron(III) Derivatives
Treatment of [Fe(OEP)]20 with trichloroacetic acid results in ruffled formation of (octaethylporphinato trichloroacetato)iron(HI). Various crystalline solvates can be isolated, depending on the crystallization solvent. Initial crystallization with CHC13/hexanes resulted in the isolation of an unsolvated form. [Fe(OEP)(02C2C13 )]. This form contains distinct porphyrin core conformations at the same site: one is domed and the other is ruffled. Crystal data for [Fe(OEP)(02C2C13 )]: Q = 14.734(4) .4. b = 13.674(1) .\. c = 17..541 [,.5] .~. 3 = 90.67(1)0, V = 35-!5.8(14) .\3. monoclinic. space group R1/ n. Z = 4. Subsequent crystallization with CHC13/hexanes resulted in a new crystalline form, [Fe(OEP)(OzC2C13 )~.- CHC13; the porphyrin core is slightly ruffled. Crystal data for [Fe(OEP)(OoC2C13 )]. CHC13: a =12.323(1) .~, 6 = 13.062(3) .\. C = 14.327(2) .$, Q = 89.32(1)", .3 = 113.36(2)0. :~ = 105.26(1)'. V = `2031.3(6) .\3. triclinic. space group Pi. Z = 2. Crystallization with CH2C12/hexanes resulted in the isolation of yet another form, [Fe(OEP) (02 C2C13)]. H02C2C13. which contains two independent molecules in the unit cell: molecule is slightly saddled and molecule B is modestly ruffled. Crystal data for [Fe(OEP)(02ClC13 )]. H02C2C13: a = 13.148(3) .\, b = 13.45.5(3) A, c = Q3.761(5) -& ~ = …
Date:
October 19, 1998
Creator:
Cheng, B.; Ma, J.; Neal, T.J.; Scheidt, W.R.; Schulz, C.E. & Shelnutt, J.A.
Object Type:
Article
System:
The UNT Digital Library
DART transportation and maintenance employees feed the homeless Saturday, October 24
News release about a charitable "Feed the Homeless" lunch sponsored by DART employees.
Date:
October 19, 1998
Creator:
Lyons, Morgan
Object Type:
Text
System:
The Portal to Texas History
Design of high density gamma-phase uranium alloys for LEU dispersion fuel applications.
Uranium alloys are candidates for the fuel phase in aluminum matrix dispersion fuels requiring high uranium loading. Certain uranium alloys have been shown to have good irradiation performance at intermediate burnup. Previous studies have shown that acceptable fission gas swelling behavior and fuel-aluminum interaction is possible only if the fuel alloy can be maintained in the high temperature body-centered-cubic {gamma}-phase during fabrication and irradiation, i.e., at temperatures at which {alpha}-U is the equilibrium phase. Transition metals in Groups V through VIII are known to allow metastable retention of the gamma phase below the equilibrium isotherm. These metals have varying degrees of effectiveness in stabilizing the gamma phase. Certain alloys are metastable for very long times at the relatively low fuel temperatures seen in research reactor operation. In this paper, the existing data on the gamma stability of binary and ternary uranium alloys is analyzed. The mechanism and kinetics of decomposition of the gamma phase are assessed with the help of metal alloy theory. Alloys with the highest possible uranium content, good gamma-phase stability, and good neutronic performance are identified for further metallurgical studies and irradiation tests. Results from theory will be compared with experimentally generated data.
Date:
October 19, 1998
Creator:
Hofman, G. L.
Object Type:
Article
System:
The UNT Digital Library
Domain decomposition methods for parallel laser-tissue models with Monte Carlo transport
Achieving parallelism in simulations that use Monte Carlo transport methods presents interesting challenges. For problems that require domain decomposition, load balance can be harder to achieve. The Monte Carlo transport package may have to operate with other packages that have different optimal domain decompositions for a given problem. To examine some of these issues, we have developed a code that simulates the interaction of a laser with biological tissue; it uses a Monte Carlo method to simulate the laser and a finite element model to simulate the conduction of the temperature field in the tissue. We will present speedup and load balance results obtained for a suite of problems decomposed using a few domain decomposition algorithms we have developed.
Date:
October 19, 1998
Creator:
Alme, H.J.; Rodrique, G. & Zimmerman, G.
Object Type:
Article
System:
The UNT Digital Library
Economics and the evaluation of publicly funded energy R and D
There are three major areas in which economics can contribute to the evaluation of federal R and D: assessment of net benefits, ex ante expected as well as ex post realized; tailoring of R and D portfolios to policy goals; and guiding the contractual organization of R and D production. Additionally, evaluation of R and D and scientific activity tend to be distinctly retrospective, principally because of the long lags between the initial production activity and the observability of consequences. Extending the purview of economic evaluation of R and D, they find ample opportunity for evaluation that can inform current R and D management practice. The conduct of R and D is organized through a series of explicit and implicit contracts designed to elicit long-term commitments by some agents while attempting to limit the commitment by others. It is natural to consider the efficiency with which R and D is conducted as a subject for economic inquiry, although in practice such inquiries generally are restricted to accounting exercises. In evaluating the efficiency with which R and D is done, the current ordinary practice is to look at labor rates and equipment and materials prices while considering quantities of those items …
Date:
October 19, 1998
Creator:
Jones, D.W. & Paik, I.K.
Object Type:
Article
System:
The UNT Digital Library
Emissions from Trucks using Fischer-Tropsch Diesel Fuel
The Fischer-Tropsch (F-T) catalytic conversion process can be used to synthesize diesel fuels from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, Fischer-Tropsch diesel fuels may also be economically competitive with California B- diesel fuel if produced in large volumes. overview of Fischer-Tropsch diesel fuel production and engine emissions testing is presented. Previous engine laboratory tests indicate that F-T diesel is a promising alternative fuel because it can be used in unmodified diesel engines, and substantial exhaust emissions reductions can be realized. The authors have performed preliminary tests to assess the real-world performance of F-T diesel fuels in heavy-duty trucks. Seven White-GMC Class 8 trucks equipped with Caterpillar 10.3 liter engines were tested using F-T diesel fuel. Vehicle emissions tests were performed using West Virginia University's unique transportable chassis dynamometer. The trucks were found to perform adequately on neat F-T diesel fuel. Compared to a California diesel fuel baseline, neat F-T diesel fuel emitted about 12% lower oxides of nitrogen (NOx) and 24% lower particulate matter over a five-mile driving cycle.
Date:
October 19, 1998
Creator:
Norton, Paul; Vertin, Keith; Bailey, Brent; Clark, Nigel N.; Lyons, Donald W.; Goguen, Stephen et al.
Object Type:
Article
System:
The UNT Digital Library
Evolution of 2D Potts Model Grain Microstructures from an Initial Hillert Size Distribution
Grain growth experiments and simulations exhibit self-similar grain size distributions quite different from that derived via a mean field approach by Hillert [ 1]. To test whether this discrepancy is due to insufficient anneal times, two different two-dimensional grain structures with realistic topologies and Hillert grain size distributions are generated and subjected to grain growth via the Monte Carlo Potts Model (MCPM). In both cases, the observed self-similar grain size distributions deviate from the initial Hillert form and conform instead to that observed in MCPM grain growth simulations that start from a random microstructure. This suggests that the Hillert grain size distribution is not an attractor.
Date:
October 19, 1998
Creator:
Battaile, C.C. & E.A., Holm
Object Type:
Article
System:
The UNT Digital Library
Experimental Program to Elucidate and Control Stimulated Brillouin and Raman Backscattering in Long-Scale Plasmas
Laser-plasma instability is a serious concern for indirect-drive inertial confinement fusion (ICF), where laser beams illuminate the interior of a cavity (called a hohlraum) to produce X-rays to drive the implosion of a fusion capsule. Stimulated Raman and Brillouin backscattering (SRS and SBS) could result in unacceptably high laser reflectivities. Unfortunately, it is impossible at present to fully simulate these processes realistically. The authors experimental program aims to understand these instabilities by pursuing a dual strategy. (1) They use a gas-filled hohlraum design, which best approaches ignition-hohlraum conditions, on the Nova laser to identify important non linear trends. (2) They are shifting towards more fundamental experiments with a nearly diffraction-limited interaction laser beam illuminating extremely well characterized plasmas on the Trident laser facility at Los Alamos to probe the relevant fundamental processes.
Date:
October 19, 1998
Creator:
Fernandez, J. C.; Cobble, J. A.; Montgomery, D. S. & Wilke, M. D.
Object Type:
Article
System:
The UNT Digital Library
Exploring Ways to Improve Predictive Capability of Z-Pinch Calculations
For some time 2-dimensional RMHD (radiation magneto-hydrodynamic) calculations of radiating z-pinches have been made to agree with integral data (current wave form, yield and power). For these calculations, the agreement with detailed data, such as time-resolved x-ray images, is generally not as good. Correctly modeling the physics of z-pinches, including detailed data, is needed to have true predictive capability. To address this problem, the authors first determine which integral data are most sensitive to the details in the models. With this information, they investigate aspects of the pinch, to which the data is sensitive, using non-standard techniques. For example, the pinch is calculated in (x,y)-geometry to investigate how a non-symmetric implosion affects the simulated data.
Date:
October 19, 1998
Creator:
Matuska, W.; Aubrey, J.; Bowers, R.; Lee, H.; Peterson, D.; Deeney, C. et al.
Object Type:
Article
System:
The UNT Digital Library