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open access

Air Traffic Control: Status of FAA's Implementation of the Display System Replacement Project

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the status of the Federal Aviation Administration's (FAA) implementation of the Display System Replacement (DSR) project, focusing on: (1) the status of FAA's overall modernization program; (2) FAA's progress in implementing DSR, with particular emphasis on events surrounding Boston's implementation; and (3) opportunities for continued success by FAA in completing i… more
Date: October 11, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

LHC IRQ cryostat support mechanical performance

Description: The LHC Interaction Region Quadrupoles (IRQ) will be shipped from Fermilab to CERN. The IRQ magnets are supported by glass fiber supports. A prototype cryostat support has been tested under various mechanical forces in order to check its mechanical behavior. These measurements have been made in order to validate a numerical model. A large range of mechanical loads simulates loads due to the shipment of the device, the weight of the cold mass as well as the cool down conditions. Its mechanical p… more
Date: October 11, 1999
Creator: Darve, Ch.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dimensional Stability and Microstructure Evolution in Irradiated Systems with Complex Kinetics

Description: We use a combination of molecular dynamics and kinetic Monte Carlo simulations to explore the role of temperature and dose rate on damage accumulation in a model system with complex kinetics. We describe the accumulation of He-vacancy (HeV) complexes as well as vacancy and interstitial clusters as a function of irradiation temperature, dose, and dose rate. We show that nucleation of stable HeV complexes (voids and bubbles) at low temperature and flux takes place at extremely low doses. We also … more
Date: October 11, 1999
Creator: Diaz de la Rubia, T.; Caturla, M. & Fluss, M.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Waste Retrieval Sluicing System Campaign Number 3 Solids Volume Transferred Calculation

Description: This report with the attached tables provide supporting documentation for completing Performance Agreement TWR 1.2.2, C-106 Sluicing, Performance Expectation. The calculations summarized in the tables were performed using process control procedures and strategies as documented in engineering procedure HFN-SD-WM-PROC-021, Section 23.0, Rev. 2C, subsection 4.4, ''Calculation of Sludge Transferred.'' Four methods are described including: (1) Mass transfer based on Mass Flow Meter; (2) Mass transfe… more
Date: October 11, 1999
Creator: CAROTHERS, K.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radioactive air emissions notice of construction for deactivation of the PUREX storage tunnel number 2

Description: The Plutonium-Uranium Extraction (PUREX) Plant Storage Tunnel Number 2 (hereafter referred to as the PUREX Tunnel) was built in 1964. Since that time, the PUREX Tunnel has been used for storage of radioactive and mixed waste. In 1991, the PUREX Plant ceased operations and was transitioned to deactivation. The PUREX Tunnel continued to receive PUREX Plant waste material for storage during transition activities. Before 1995, a decision was made to store radioactive and mixed waste in the PUREX Tu… more
Date: October 11, 1999
Creator: Johnson, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

LHC IRQ cryostat support mechanical performance

Description: The LHC Interaction Region Quadrupoles (IRQ) will be shipped from Fermilab to CERN. The IRQ magnets are supported by glass fiber supports. A prototype cryostat support has been tested under various mechanical forces in order to check its mechanical behavior. These measurements have been made in order to validate a numerical model. A large range of mechanical loads simulates loads due to the shipment of the device, the weight of the cold mass as well as the cool down conditions. Its mechanical p… more
Date: October 11, 1999
Creator: Darve, Ch.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: China typhoon]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story about a typhoon in China. This b-roll footage shows storm damage including downed trees. This footage was broadcast at 5pm.
Date: October 11, 1999
Duration: 49 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Design of a high-resolution high-stability positioning mechanism for crystal optics

Description: The authors present a novel miniature multi-axis driving structure that will allow positioning of two crystals with better than 50-nrad angular resolution and nanometer linear driving sensitivity.The precision and stability of this structure allow the user to align or adjust an assembly of crystals to achieve the same performance as does a single channel-cut crystal, so they call it an artificial channel-cut crystal. In this paper, the particular designs and specifications, as well as the test … more
Date: October 11, 1999
Creator: Shu, D.; Toellner, T. S. & Alp, E. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Design of a miniature hydraulic compression load frame for microdiffraction tests at the Advanced Photon Source.

Description: In support of the x-ray synchrotrons radiation multidiffraction project of Los Alamos National Laboratory at the Advanced Photon Source (APS), we have designed and fabricated a miniature hydraulic compression load frame with 20000 N load capacity for metal specimen tests at the APS. The compact design allows the load frame to sit on the center of a 6-circle goniometer with six degrees of freedom and maximum solid angle accessibility for the incoming x-ray beam and diffraction beam detectors. A … more
Date: October 11, 1999
Creator: Shu, D.; Varma, R.; Krasnicki, S. & Sinha, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The effect of particle inlet conditions on FCC riser hydrodynamics and product yields.

Description: Essential to today's modern refineries and the gasoline production process are fluidized catalytic cracking units. By using a computational fluid dynamics (CFD) code developed at Argonne National Laboratory to simulate the riser, parametric and sensitivity studies were performed to determine the effect of catalyst inlet conditions on the riser hydrodynamics and on the product yields. Simulations were created on the basis of a general riser configuration and operating conditions. The results of … more
Date: October 11, 1999
Creator: Chang, S. L.; Golchert, B.; Lottes, S. A.; Zhou, C. Q.; Huntsinger, A. & Petrick, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Final Report: Free Standing Quantum Wells, August 15, 1996 - May 31, 1999

Description: Recent advances in microfabrication techniques in conjunction with the precise growth of layers of single crystalline materials by epitaxial growth techniques allow the creation of new electro-optic microstructures. We have selectively etched compositionally modulated 111-v heterostructures to produce quantum wells (QW's) which are confined on both sides by air or vacuum. The material is patterned so to have the QW's suspended horizontally between vertical support posts. This structure is ideal… more
Date: October 11, 1999
Creator: Williams, M. D.; Lee, H. W. H. & Collins, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Web interface for control of spent fuel measurements at FCF.

Description: The material control and accountancy system for the Fuel Conditioning Facility (FCF) initially uses calculated values for the mass flows of irradiated EBR-11 driver fuel to be processed in the electrorefiner. These calculated values are continually verified by measurements performed by the Analytical Laboratory (AL) on samples from the fuel element chopper retained for each chopper batch. Measured values include U and Pu masses, U and Pu isotopic fractions, and burnup (via La and Tc). When the … more
Date: October 11, 1999
Creator: Soltys, I. E.; Yacout, A. M. & McKnight, R. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sn-Li, a new coolant/breeding material for fusion applications.

Description: A new breeding material, Sn-Li has been proposed for the APEX and ALPS programs. The key reason for proposing this material is that it has very low vapor pressure. Since both APEX and ALPS are investigating free surface flow for the blanket and divertor, respectively, low vapor pressure is a big advantage. This paper summarizes the results from a preliminary investigation. The early conclusion is that Sn-Li can be used as the coolant/breeding material for the APEX and ALPS applications. It has … more
Date: October 11, 1999
Creator: Sze, D.-K.; Mattas, R.; Wang, Z.; Cheng, E. T.; Sawan, M.; Zinkle, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MC and A sampling activities at FCF

Description: The electrometallurgical treatment of the Experimental Breeder Reactor-II (EBR-II) spent fuel has reached the end of its demonstration phase at the Fuel Conditioning Facility (FCF). During this phase sampling from the different material streams within the facility was important for both operational and safeguards activities. Compositions of samples are used in closeout of the different operational steps. In addition, sampling is an element of the MC and A measurement control program at the faci… more
Date: October 11, 1999
Creator: Yacout, A. M.; McKnight, R. D.; Mariani, R. D.; Westphal, B. & Battisti, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CDF results on hard diffraction and rapidity gap physics

Description: We review published rapidity gap results on diffractive W and dijet production and discuss new results on diffractive b and J/{psi} production. The diffractive structure function of the proton obtained from Roman pot dijet data is presented and com- pared with expectations based on the diffractive parton densities extracted from DIS at HERA. Also presented are results on dijet production in double Pomeron exchange. Finally, we review hard double-diffractive results (rapidity gaps between jets) … more
Date: October 11, 1999
Creator: Convery, M. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Research Misconduct and the Physical Sciences

Description: Research misconduct includes the fabrication, falsification, and plagiarism (FFP) of concepts or ideas; some institutions have expanded this concept to include ''other serious deviations (OSD) from accepted research practice.'' An action can be evaluated as research misconduct if it involves activities unique to the practice of science and could negatively affect the scientific record. Although the number of cases of research misconduct is uncertain (formal records are kept only by the NIH and … more
Date: October 11, 1999
Creator: Kerch, HM & Dooley, JJ
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Personal observations on interdisciplinarity

Description: The author's assignment was to report on how I{sup 3} relates to professional societies and journals he has known, a not unreasonable request given past associations with the Materials Research Society (MRS) and its journal, JMR, particularly in their more formative years. Some recollections and some comments on current postures of MRS and JMR will be found in the section following. There are manifold anecdotes one might relate about overcoming (or not) barriers raised by disciplinary preconcep… more
Date: October 11, 1999
Creator: Kaufmann, E. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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