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Giddings Times & News (Giddings, Tex.), Vol. 110, No. 27, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Giddings, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
Preuss, L. M., III & True, David G.
Object Type:
Newspaper
System:
The Portal to Texas History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 105, No. 21, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 16, 1999
Creator:
Bridges, G. Frank & Bridges, Georgie
Object Type:
Newspaper
System:
The Portal to Texas History
Growth of a Au-Ni-Sn intermetallic compound on the solder-substrate interface after aging
Au/Ni metallization has become increasingly common in microelectronic packaging when Cu pads are joined with Pb-Sn solder. The outermost Au layer serves to protect the pad from corrosion and oxidation and the Ni layer provides a diffusion barrier to inhibit detrimental growth of Cu-Sn intermetallics. As a result of reflowing eutectic Pb-Sn on top of Au/Ni metallization, the as-solidified joints have AuSn{sub 4} precipitates distributed throughout the bulk of the solder joint, and Ni{sub 3}Sn{sub 4} intermetallics at the interface. Recent work has shown that the Au-Sn redeposits onto the interface during aging, compromising the strength of the joint. The present work shows that the redeposited intermetallic layer is a ternary compound with stoichiometry Au{sub 0.5}Ni{sub 0.5}Sn{sub 4}. The growth of this intermetallic layer was investigated, and results show that the ternary compound is observed to grow after as little as 3 hours at 150 C and after 3 weeks at 150 C has grown to a thickness of 10 {micro}m. Additionally, methods for inhibiting the growth of the ternary layer were investigated and it was determined that multiple reflows, both with and without additional aging can substantially limit the thickness of the ternary layer.
Date:
December 16, 1999
Creator:
Minor, Andrew M. & Morris, J. W., Jr.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Hondo Anvil Herald (Hondo, Tex.), Vol. 113, No. 50, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 16, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Laser Induced Material Modification in the Bulk KDP Crystals
Laser induced material modifications in the bulk and on the surface of KDP (KH{sub 2}PO{sub 4}) and DKDP (70-80% deuterated KDP) are studied using fluorescence imaging and spectroscopy. Photoluminescence is observed at damaged regions following above threshold exposure with an emission peak centered at 550-nm. In addition, surfaces exposed to >100 high power, 355-nm laser pulses reveal a reduced surface finishing quality as evidenced by an associated emission under UV photoexcitation. The emission spectra from the laser-induced damage sites and the laser degraded surfaces are similar suggesting the generation of similar defect species.
Date:
December 16, 1999
Creator:
Demos, S. G.; Radousky, H. B.; Staggs, M.; Runkel, M. & Burnham, A.
Object Type:
Article
System:
The UNT Digital Library
De Leon Free Press (De Leon, Tex.), Vol. 110, No. 25, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from De Leon, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
Morgan, Jerry
Object Type:
Newspaper
System:
The Portal to Texas History
De Leon's Monitor (De Leon, Tex.), Vol. 5, No. 24, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from De Leon, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
Huffman, Russell
Object Type:
Newspaper
System:
The Portal to Texas History
The Llano News (Llano, Tex.), Vol. 112, No. 10, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Llano, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
Stephenson, Jimmy
Object Type:
Newspaper
System:
The Portal to Texas History
[E-mail from Donald J. Killeen to Melinda Mayer, December 16, 1999]
An e-mail from Donald J. Killeen to Melinda Mayer about discussing and gathering more information for curriculum guidelines.
Date:
December 16, 1999
Creator:
Killeen, Donald J.
Object Type:
Letter
System:
The UNT Digital Library
[E-mail from Marilyn Wulliger to Pam Stephens and Nancy Walkup Reynolds, December 16, 1999]
An e-mail from Marilyn Wulliger to Pam Stephens and Nancy Walkup Reynolds about some issues with guidelines.
Date:
December 16, 1999
Creator:
Wulliger, Marilyn
Object Type:
Letter
System:
The UNT Digital Library
Major Financial Services Legislation, The Gramm-Leach-Bliley Act (P.L. 106-102): An Overview
None
Date:
December 16, 1999
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Microwave Imaging Reflectometry for the Visualization of Turbulence in Tokamaks
Understanding the mechanism of anomalous transport in magnetically confined plasmas requires the use of sophisticated diagnostic tools for the measurement of short-scale turbulent fluctuations. This paper describes the conceptual design of an experimental technique for the global visualization of density fluctuations in tokamaks. The proposed method is based on microwave reflectometry and consists in using a large diameter probing beam, collecting the reflected waves with a large aperture antenna, and forming an image of the reflecting plasma layer onto a 2D array of microwave receivers. Based on results from a series of numerical simulations, the theoretical feasibility conditions of the proposed method are discussed.
Date:
December 16, 1999
Creator:
Mazzucato, E.
Object Type:
Report
System:
The UNT Digital Library
Modeling KDP Bulk Damage Curves for Prediction of Large-Area Damage Performance
Over the past two years extensive experimentation has been carded out to determine the nature of bulk damage in KDP. Automated damage testing with small beams has made it possible to rapidly investigate damage statistics and its connection to growth parameter Variation. Over this time we have built up an encyclopedia of many damage curves but only relatively few samples have been tested with large beams. The scarcity of data makes it difficult to estimate how future crystals will perform on the NIF, and the campaign nature of large beam testing is not suitable for efficient testing of many samples with rapid turn-around, it is therefore desirable to have analytical tools in place that could make reliable predictions of large-beam performance based on small-beam damage probability measurements. To that end, we discuss the application of exponential and power law damage evolution within the framework of Poisson statistics in this memo. We describe the results of fitting these models to various damage probability curves on KDP including the heavily investigated KDP214 samples. We find that both models are capable of fitting the damage probability S-curves quite well but there are multiple parameter sets for each model that produce comparable {chi}{sup 2} …
Date:
December 16, 1999
Creator:
Runkel, M. & Sharp, R.
Object Type:
Article
System:
The UNT Digital Library
Multi Canister Overpack (MCO) Topical Report [SEC 1 and 2]
None
Date:
December 16, 1999
Creator:
LORENZ, B.D.
Object Type:
Report
System:
The UNT Digital Library
The NCEM phase extensions to digital micrograph: User Manual
None
Date:
December 16, 1999
Creator:
Kilaas, R.
Object Type:
Report
System:
The UNT Digital Library
News Bulletin (Castroville, Tex.), Vol. 41, No. 50, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 16, 1999
Creator:
Barnes, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
NSTX Electrical Power Systems
The National Spherical Torus Experiment (NSTX) has been designed and installed in the existing facilities at Princeton Plasma Physic Laboratory (PPPL). Most of the hardware, plant facilities, auxiliary sub-systems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) have been used with suitable modifications to reflect NSTX needs. The design of the NSTX electrical power system was tailored to suit the available infrastructure and electrical equipment on site. Components were analyzed to verify their suitability for use in NSTX. The total number of circuits and the location of the NSTX device drove the major changes in the Power system hardware. The NSTX has eleven (11) circuits to be fed as compared to the basic three power loops for TFTR. This required changes in cabling to insure that each cable tray system has the positive and negative leg of cables in the same tray. Also additional power cabling had to be installed to the new location. The hardware had to b e modified to address the need for eleven power loops. Power converters had to be reconnected and controlled in anti-parallel mode for the Ohmic heating and two of the Poloidal Field circuits. The circuit for the Coaxial …
Date:
December 16, 1999
Creator:
Ilic, A.; Baker, E.; Hatcher, R.; Ramakrishnan, S. & al, et
Object Type:
Report
System:
The UNT Digital Library
OIT Times Newsletter: Volume 3, Number 1, Winter 2000
The Winter 2000 edition of the OIT Times newsletter, a quarterly publication produced by the Office of Industrial Technologies, highlights the 1999 start-up projects, announces the OIT solicitation schedule for FY2000, and features the success of the Ohio diecasting showcase. One of the quarterly highlights was Secretary Richardson's presentation of a Certificate of Partnership to Malden Mills CEO Aaron Feuerstein at the dedication of the plant's new, advanced cogeneration system.
Date:
December 16, 1999
Creator:
Sousa, L.
Object Type:
Book
System:
The UNT Digital Library
The Oklahoma Eagle (Tulsa, Okla.), Vol. 78, No. 50, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Tulsa, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
E-PERM alpha surface monitor
Innovative Technology Summary Reports are designed to provide potential users with the information they need to quickly determine if a technology would apply to a particular environmental management problem. They are also designed for readers who may recommend that a technology be considered by prospective users. Each report describes a technology, system, or process that has been developed and tested with funding from DOE's Office of Science and Technology (OST). The E-PERM{reg{underscore}sign} Alpha Surface Monitor is an integrating electret ion chamber innovative technology used to measure alpha radiation on surfaces of materials. The technology is best used on surfaces with low contamination levels such as areas with potential for free release, but can also be used in areas with higher levels of contamination. Measurement accuracy and production of the E-PERM {reg{underscore}sign} Alpha Surface Monitor compared favorably with the baseline technology. The innovative technology cost is approximately 28% higher than the baseline with an average unit cost per reading costing %6.04 vs. $4.36; however, the flexibility of the E-PERM{reg{underscore}sign} Alpha Surface Monitor may offer advantages in ALARA, reduction of operator error, waste minimization, and measurement accuracy.
Date:
December 16, 1999
Creator:
Fricke, V.
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 106, No. 245, Ed. 1 Thursday, December 16, 1999
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1999
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Photodissociation spectroscopy and dynamics of free radicals, clusters, and ions
The photodissociation spectroscopy and dynamics of free radicals and ions is studied to characterize the dissociative electronic states in these species. To accomplish this, a special method of radical production, based on the photodetachment of the corresponding negative ion, has been combined with the technique of fast beam photofragment translational spectroscopy. The photofragment yield as a function of photon energy is obtained, mapping out the dissociative and predissociative electronic states. Branching ratios to various product channels, the translational energy distributions of the fragments, and bond dissociation energies are then determined at selected photon energies. The detailed picture of photodissociation dynamics is provided with the aid of ab initio calculations and a statistical model to interpret the observed data. Important reaction intermediates in combustion reactions have been studied: CCO, C{sub 2}H{sub 5}O, and linear C{sub n} (n = 4--6).
Date:
December 16, 1999
Creator:
Hyeon, Choi
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Polk County Enterprise (Livingston, Tex.), Vol. 117, No. 100, Ed. 1 Thursday, December 16, 1999
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
December 16, 1999
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 29, No. 50, Ed. 1 Thursday, December 16, 1999
Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with advertising.
Date:
December 16, 1999
Creator:
Judson, Mary
Object Type:
Newspaper
System:
The Portal to Texas History