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415 Matching Results
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Electron exchange along the tercyclopentadienyltrimetallic scaffold: Kinetics, equilibria, and bond strengths
None
Date:
January 6, 2004
Creator:
Cammack, J. Kevin; Amouri, Hani; Leonard, Philip W.; Myrabo, Randy L. & Vollhardt, Peter C.
Object Type:
Article
System:
The UNT Digital Library
Comparison of Blade-Strike Modeling Results with Empirical Data
This study is the initial stage of further investigation into the dynamics of injury to fish during passage through a turbine runner. As part of the study, Pacific Northwest National Laboratory (PNNL) estimated the probability of blade strike, and associated injury, as a function of fish length and turbine operating geometry at two adjacent turbines in Powerhouse 1 of Bonneville Dam. Units 5 and 6 had identical intakes, stay vanes, wicket gates, and draft tubes, but Unit 6 had a new runner and curved discharge ring to minimize gaps between the runner hub and blades and between the blade tips and discharge ring. We used a mathematical model to predict blade strike associated with two Kaplan turbines and compared results with empirical data from biological tests conducted in 1999 and 2000. Blade-strike models take into consideration the geometry of the turbine blades and discharges as well as fish length, orientation, and distribution along the runner.
Date:
May 6, 2004
Creator:
Carlson, Thomas J. & Ploskey, Gene R.
Object Type:
Report
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 98, No. 2, Ed. 1 Tuesday, January 6, 2004
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 6, 2004
Creator:
Cartwright, Brian & Morgan, Clay
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 98, No. 11, Ed. 1 Friday, February 6, 2004
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
February 6, 2004
Creator:
Cartwright, Brian & Morgan, Clay
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 98, No. 28, Ed. 1 Tuesday, April 6, 2004
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
April 6, 2004
Creator:
Cartwright, Brian & Morgan, Clay
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star & Hill Country Recorder (Boerne, Tex.), Vol. 98, No. 44, Ed. 1 Tuesday, July 6, 2004
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
July 6, 2004
Creator:
Cartwright, Brian & Morgan, Clay
Object Type:
Newspaper
System:
The Portal to Texas History
Boerne Star & Hill Country Recorder (Boerne, Tex.), Vol. 98, No. 52, Ed. 1 Friday, August 6, 2004
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
August 6, 2004
Creator:
Cartwright, Brian & Morgan, Clay
Object Type:
Newspaper
System:
The Portal to Texas History
Simulation of Ventilation Efficiency, Temperatures, and Relative Humidities in Emplacement Drifts at Yucca Mountain, Nevada, Using Monte Carlo and Composite Thermal-Pulse Methods
Predictions of waste canister and repository driftwall temperatures as a function of space and time are of fundamental importance to evaluating pre-closure and post-closure design requirements and performance assessment of the proposed repository for spent nuclear fuel and high-level radioactive waste at Yucca Mountain, Nevada. Variations in the lithostratigraphic features in densely welded and crystallized rocks of the 12.8-million-year-old Topopah Spring Tuff, especially the porosity resulting from lithophysal cavities, are projected 50 to 800 m from the Enhanced Characterization of the Repository Block cross drift to a simulated ''Panel 1'' emplacement drift. Lithophysal cavity porosity varies from 0.00 to 0.05 cm{sup 3}/cm{sup 3} in the middle nonlithophysal zone and from 0.03 to 0.28 cm{sup 3}/cm{sup 3} in the lower lithophysal zone. Many thermal properties are related to lithophysal cavity porosity, and computer code titled ''Monte Carlo Simulation of Ventilation'' (MCSIMVENT) has been developed for simulating statistical variability and uncertainty along the simulated emplacement drift. The MCSIMVENT code, which is based on a composite thermal-pulse calculation, is used to calculate pre-closure ventilation efficiency and peak post-closure temperatures and relative humidities along the simulated emplacement drift for as much as 1,000 years. Variations in lithophysal porosity along the drift can result in …
Date:
April 6, 2004
Creator:
Case, J. & Buesch, D.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 35, Ed. 1 Tuesday, January 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 66, Ed. 1 Friday, February 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
February 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 95, Ed. 1 Saturday, March 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
March 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 127, Ed. 1 Tuesday, April 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
April 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 157, Ed. 1 Thursday, May 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
May 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 188, Ed. 1 Sunday, June 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
June 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 218, Ed. 1 Tuesday, July 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
July 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 83, No. 249, Ed. 1 Friday, August 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
August 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 83, No. 279, Ed. 1 Monday, September 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 83, No. 307, Ed. 1 Wednesday, October 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 83, No. 338, Ed. 1 Saturday, November 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
November 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 84, No. 1, Ed. 1 Monday, December 6, 2004
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 6, 2004
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
[Students and their teacher pose with the books at Seminary Hills Elementary]
Children and their teacher pose with books at Seminary Hills Elementary in Fort Worth, Texas.
Date:
December 6, 2004
Creator:
Castillo, José L.
Object Type:
Photograph
System:
The UNT Digital Library
[Students read to each other at Seminary Hills Elementary]
Students read to each other at Seminary Hills Elementary in Fort Worth, Texas.
Date:
December 6, 2004
Creator:
Castillo, José L.
Object Type:
Photograph
System:
The UNT Digital Library
Development of Design Criteria for Fluid Induced Structural Vibrations in Steam Generators and Heat Exchangers
Flow-induced vibration in heat exchangers has been a major cause of concern in the nuclear industry for several decades. Many incidents of failure of heat exchangers due to apparent flow-induced vibration have been reported through the USNRC incident reporting system. Almost all heat exchangers have to deal with this problem during their operation. The phenomenon has been studied since the 1970s and the database of experimental studies on flow-induced vibration is constantly updated with new findings and improved design criteria for heat exchangers.
Date:
April 6, 2004
Creator:
Catton, Uvan; Dhir, Vijay K.; Mitra, Deepanjan; Alquaddoomi, Omar & Adinolfi, Pierangelo
Object Type:
Report
System:
The UNT Digital Library
New Reactor Design and Analysis of Non Linear Vibrations of Doubly Curved Shallow Shell Under a Thermal Gradient
The present study concerns with the effects of material orthotropy,curvature, shear ratio and circumferential modulus under the influence of a temperature distribution throughout the shell structure. Here analysis is restricted to the study of nonlinear vibration of a doubly curved shell structure considering the periodic response of a simple bending mode due to curtailment of pages. Solutions of the problems with suitable illustrations are also presented.
Date:
October 6, 2004
Creator:
Chanda, Subhash
Object Type:
Article
System:
The UNT Digital Library