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Altus Times (Altus, Okla.), Vol. 98, No. 266, Ed. 1 Tuesday, January 27, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Automatic differentiation for message-passing parallel programs.
Many applications require the derivatives of functions defined by computer programs. Automatic differentiation (AD) is a means of developing code to compute the derivatives of complicated functions accurately and efficiently, without the difficulties associated with developing correct code by hand. We discuss some of the issues involved in developing automatic differentiation tools for parallel programming environments.
Date:
January 27, 1998
Creator:
Hovland, P.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 76, No. 75, Ed. 1 Tuesday, January 27, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 94, No. 8, Ed. 1 Tuesday, January 27, 1998
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Keasling, Edna
Object Type:
Newspaper
System:
The Portal to Texas History
The Brand (Abilene, Tex.), Vol. 84, No. 11, Ed. 1, Tuesday, January 27, 1998
Weekly student newspaper from Hardin-Simmons University in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
January 27, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Calculational note for the radiological effects of a UO{sub 3} release from the T-hopper storage pad
UO{sub 3} powder is stored at the T-hopper storage area associated with the 2714-U building in the 200 west area. The T-hopper containers and 13 drums containing this material are used to store the powder on pads immediately north of the building. An interim safety basis document (WHC,1996) was issued in 1996. In this document the isotope{sup 99}Tc was not included in the source term used to calculate the radiological consequences of a postulated release of the powder. This calculational note is intended to remedy that deficiency. Input Data and Assumptions indicate that there is a total of 669,045 kg of uranium at the facility that is at risk for release to the atmosphere. Since uranium comprises 83.217 wt% of UO{sub 3}, this represents a little over 804 tonnes of powder. The postulated accident scenario is that 0.001 of the material at risk is released to the atmosphere.
Date:
January 27, 1998
Creator:
Goldberg, H.J.
Object Type:
Report
System:
The UNT Digital Library
Calibration grooming and alignment for LDUA High Resolution Stereoscopic Video Camera System (HRSVS)
The High Resolution Stereoscopic Video Camera System (HRSVS) was designed by the Savannah River Technology Center (SRTC) to provide routine and troubleshooting views of tank interiors during characterization and remediation phases of underground storage tank (UST) processing. The HRSVS is a dual color camera system designed to provide stereo viewing of the interior of the tanks including the tank wall in a Class 1, Division 1, flammable atmosphere. The HRSVS was designed with a modular philosophy for easy maintenance and configuration modifications. During operation of the system with the LDUA, the control of the camera system will be performed by the LDUA supervisory data acquisition system (SDAS). Video and control status 1458 will be displayed on monitors within the LDUA control center. All control functions are accessible from the front panel of the control box located within the Operations Control Trailer (OCT). The LDUA will provide all positioning functions within the waste tank for the end effector. Various electronic measurement instruments will be used to perform CG and A activities. The instruments may include a digital volt meter, oscilloscope, signal generator, and other electronic repair equipment. None of these instruments will need to be calibrated beyond what comes from the …
Date:
January 27, 1998
Creator:
Pardini, A. F.
Object Type:
Report
System:
The UNT Digital Library
Characterization report for Area 23, Building 650 Leachfield, Corrective Action Unit Number 94, Nevada Test Site. Revision 1
Corrective Action Unit (CAU) Number 94, Building 650 Leachfield, is an historic laboratory disposal unit located in Area 23 at the Nevada Test Site (NTS) in Nye County, Nevada. The objectives of this project were twofold: characterize subsurface conditions at the CAU with respect to the on-site disposal unit, and provide sufficient information to develop a closure strategy for the leachfield. To this end, subsurface sampling was conducted in the vicinity of the piping above the distribution box, under and around the distribution box, and within the leachfield.
Date:
January 27, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Chickasha Daily Express (Chickasha, Okla.), Ed. 1 Tuesday, January 27, 1998
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
D0 Central Tracking Solenoid Energizatino, Controls, Interlocks and Quench Protection Initial Validation Procedures
This note presents the inspection and tests to be performed on the DZERO solenoid energization, controls, interlocks and quench protection system before it is energized for the first time. This test is to be performed with a 5000A jumper at the end of the bus instead of the solenoid. This system is based in DZERO room 511. A copy of this note shall be annotated, signed and dated by the person coordinating the procedure; and filed with the system maintenance records. Annotations shall include comments about any aspect of the procedure that is abnormal or unsuccessful. The following inspections and tests shall be performed by persons knowledgeable about the system. Each individual test step should be reviewed and understood before proceeding with that step.
Date:
January 27, 1998
Creator:
Jaskierny, W. & Hance, R.
Object Type:
Report
System:
The UNT Digital Library
The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 15, Ed. 1 Tuesday, January 27, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Decoherence of Betatron Oscillations in RHIC
None
Date:
January 27, 1998
Creator:
Connolly, R.
Object Type:
Report
System:
The UNT Digital Library
Fatigue crack initiation in carbon and low-alloy steels in light water reactor environments : mechanism and prediction.
Section 111 of the ASME Boiler and Pressure Vessel Code specifies fatigue design curves for structural materials. The effects of reactor coolant environments are not explicitly addressed by the Code design curves. Recent test data illustrate potentially significant effects of light water reactor (LWR) coolant environments on the fatigue resistance of carbon and low-alloy steels. Under certain loading and environmental conditions, fatigue lives of test specimens may be shorter than those in air by a factor of {approx}70. The crack initiation and crack growth characteristics of carbon and low-alloy steels in LWR environments are presented. Decreases in fatigue life of these steels in high-dissolved-oxygen water are caused primarily by the effect of environment on growth of short cracks < 100 {micro}m in depth. The material and loading parameters that influence fatigue life in LWR environments are defined. Fatigue life is decreased significantly when five conditions are satisfied simultaneously, viz., applied strain range, service temperature, dissolved oxygen in water, and S content in steel are above a threshold level, and loading strain rate is below a threshold value. Statistical models have been developed for estimating the fatigue life of these steels in LWR environments. The significance of the effect of environment …
Date:
January 27, 1998
Creator:
Chopra, O. K. & Shack, W. J.
Object Type:
Article
System:
The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 69, No. 54, Ed. 1 Tuesday, January 27, 1998
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Highly-charged heavy-ion production with short pulse lasers
This MathCAD document describes a possible approach using a PW -class short pulse laser to form a useful number (10{sup 12}) of high and uniform charge state ions with low ion temperature (<< 100 eV) and low momentum spread ({delta}p{sub z}/p, < 10{sup -4} ) for injection into heavy-ion fusion accelerators. As a specific example, we consider here Xenon{sup +26}, which has an ionization energy E{sub i} {approximately} 860 eV for the 26th electron, and a significantly higher ionization potential of 1500 eV for the 27th electron because of the M-shell jump. The approach considered here may be used for other ion species as well. The challenge is not simply to produce high charge states with a laser (the ITEP group [Sharkov] have used long pulse CO{sub 2} lasers to create many charge states of chromium up to helium-like Cr{sup +25} by collisional ionization at high Te), nor just to create such high charge states more selectively by field (tunneling) ionization at higher intensities and shorter pulses. Rather, the challenge is to create a selected uniform high charge state, in useful numbers, while keeping the ion temperature and momentum spread small, and avoiding subsequent loss of ion charge state due …
Date:
January 27, 1998
Creator:
Logan, G.; Bitmire, T.; Perry, M.; Anderson, O. & Kuehl, T.
Object Type:
Article
System:
The UNT Digital Library
Integration of complex-wide mixed low-level waste activities for program acceleration and optimization
In July 1996, the US Department of Energy (DOE) chartered a contractor-led effort to develop a suite of technically defensible, integrated alternatives which would allow the Environmental Management program to accomplish its mission objectives in an accelerated fashion and at a reduced cost. These alternatives, or opportunities, could then be evaluated by DOE and stakeholders for possible implementation, given precursor requirements (regulatory changes, etc.) could be met and benefits to the Complex realized. This contractor effort initially focused on six waste types, one of which was Mixed Low-Level Waste (MLLW). Many opportunities were identified by the contractor team for integrating MLLW activities across the DOE Complex. These opportunities were further narrowed to six that had the most promise for implementation and savings to the DOE Complex. The opportunities include six items: (1) the consolidation of individual site analytical services procurement efforts, (2) the consolidation of individual site MLLW treatment services procurement efforts, (3) establishment of ``de minimus`` radioactivity levels, (4) standardization of characterization requirements, (5) increased utilization of existing DOE treatment facilities, and (6) using a combination of DOE and commercial MLLW disposal capacity. The results of the integration effort showed that by managing MLLW activities across the DOE Complex …
Date:
January 27, 1998
Creator:
McKenney, D. E.
Object Type:
Article
System:
The UNT Digital Library
MAQUILADORAS AND NAFTA: THE ECONOMICS OF U.S.-MEXICO PRODUCTION SHARING AND TRADE
None
Date:
January 27, 1998
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Maquiladoras and NAFTA: The Economics of U.S.-Mexico Production Sharing and Trade
Debate continues over the benefits of U.S. trade with Mexico, the North American Free Trade Agreement (NAFTA), and particularly maquiladoras, or cross-border production sharing plants. Maquiladoras generate a large portion of U.S.-Mexico trade, yet the economic effects are not widely understood. Many believe there is no benefit to such trade because it leads to the loss of U.S. jobs, production, and wages. Maquiladora products, however, have a high U.S. content that in addition to fostering productivity gains in both countries, may actually minimize the loss of U.S. jobs by allowing the higher paying jobs to stay at home rather than be shipped entirely abroad, for example, to Asia. Still, adjustment to globalized production creates challenges, particularly in addressing the plight of low-skilled workers who become unemployed. Research, however, continues to point to domestic rather than trade policy for the likely solutions, particularly the emphasis on education and training programs.
Date:
January 27, 1998
Creator:
Hornbeck, J. F.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Manhunt]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 27, 1998, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
The North Texas Daily (Denton, Tex.), Vol. 80, No. 58, Ed. 1 Tuesday, January 27, 1998
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:
January 27, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 82, No. 103, Ed. 1 Tuesday, January 27, 1998
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
January 27, 1998
Creator:
Ratcliffe, Heather
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oxidation dynamics of nanophase aluminum clusters : a molecular dynamics study.
Oxidation of an aluminum nanocluster (252,158 atoms) of radius 100{angstrom} placed in gaseous oxygen (530,727 atoms) is investigated by performing molecular-dynamics simulations on parallel computers. The simulation takes into account the effect of charge transfer between Al and O based on the electronegativity equalization principles. We find that the oxidation starts at the surface of the cluster and the oxide layer grows to a thickness of {approximately}28{angstrom}. Evolutions of local temperature and densities of Al and O are investigated. The surface oxide melts because of the high temperature resulting from the release of energy associated with Al-O bondings. Amorphous surface-oxides are obtained by quenching the cluster. Vibrational density-of-states for the surface oxide is analyzed through comparisons with those for crystalline Al, Al nanocluster, and {alpha}-Al{sub 2}O{sub 3}.
Date:
January 27, 1998
Creator:
Ogata, S.
Object Type:
Article
System:
The UNT Digital Library
PDJ Daily Journal (Perry, Okla.), Vol. 105, No. 18, Ed. 1 Tuesday, January 27, 1998
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 27, 1998
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Pressurization of whole element canister during staging
An analytical model was developed to estimate the buildup of gas pressure for a single outer element in a hot cell test container for a post cold vacuum drying staging/storage test. This model considers various sources of gas generation and gas consumption as a function of time. In a canister containing spent nuclear fuel, hydrogen is generated from the reactions of uranium with free water or hydrated water, hydride decomposition, and radiolysis. The canister pressurization model predicts a stable pressure and a peak temperature during staging, with an assumption that a fuel element contains 40 gm of corrosion products and a decay heat of 2.07 or 1.06 Watts. Calculations were also performed on constant temperature tests for fuel elements containing varied amounts of sludge tested at 150, 125, 105, and 85 C. The pressurization model will be used to evaluate test results obtained from post-drying testing on whole fuel elements.
Date:
January 27, 1998
Creator:
Huang, F.F.
Object Type:
Report
System:
The UNT Digital Library