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Mineral Commodity Summaries 2002

Description: Report compiling nonfuel mineral industry data along with an analysis of significant events, trends, and issues. Data sheets contain information on the domestic industry structure, Government program, tariffs, and 5-year salient statistics for more than 90 individual minerals and materials.
Date: January 2002
Creator: United States. Bureau of Mines.
Partner: UNT Libraries Government Documents Department
open access

Reconciliation Report

Description: Reconciliation report with an ending account balance of $1,193.54 reconciled for the period ending on January 11, 2002.
Date: January 11, 2002
Partner: UNT Libraries Special Collections
open access

Deposit Summary

Description: Deposit summary of $150.00 made on December 28, 2001.
Date: January 11, 2002
Partner: UNT Libraries Special Collections
open access

Time Reversal Signal Processing in Communications - A Feasibility Study

Description: A typical communications channel is subjected to a variety of signal distortions, including multipath, that corrupt the information being transmitted and reduce the effective channel capacity. The mitigation of the multipath interference component is an ongoing concern for communication systems operating in complex environments such as might be experienced inside buildings, urban environments, and hilly or heavily wooded areas. Communications between mobile units and distributed sensors, so imp… more
Date: January 30, 2002
Creator: Meyer, A W; Candy, J V & Poggio, A J
Partner: UNT Libraries Government Documents Department
open access

LDRD Final Report - 01-FS-004

Description: This report describes the results from an experimental program to investigate the feasibility of laser produced MeV protons as a diagnostic of electric fields or shock compressed materials. The experimental campaign was very successful, and has led to substantial advances in the characterization and optimization of proton sources from ultra-intense laser-solid interaction. This is a subject of the highest scientific interest [1] and is highly relevant to developing its use as a possible NIF imp… more
Date: January 23, 2002
Creator: Mackinnon, A. J.
Partner: UNT Libraries Government Documents Department
open access

Declaration Patent for the Invention of Device for Pulling Halyard

Description: The device for the halyard stretching consists of a frame with coupler and clamping rollers mounted in pairs on it, the drive of the rotation of the coupler rollers and the clamping device with a clamping spring. The clamping device is remarkable that the clamping rollers are mounted in a separate movable bracket, which is connected with the frame with the help of a hinge. Between the frame and the movable bracket a releasing spring is inserted. The clamping device is equipped with a movable ho… more
Date: January 31, 2002
Creator: Anuprienko, G. E.; Karpachov, Y. A.; Rowland, M. S.; Savenko, Y. M. & Smith, C. F.
Partner: UNT Libraries Government Documents Department
open access

White Paper on Institutional Capability Computing Requirements

Description: This paper documents the need for a rapid, order-of-magnitude increase in the computing infrastructure provided to scientists working in the unclassified domains at Lawrence Livermore National Laboratory. This proposed increase could be viewed as a step in a broader strategy linking hardware evolution to applications development that would take LLNL unclassified computational science to a position of distinction, if not preeminence, by 2006. We believe that it is possible for LLNL institutional… more
Date: January 29, 2002
Creator: Kissel, Lynn; McCoy, Michael G. & Seager, Mark K.
Partner: UNT Libraries Government Documents Department
open access

Effects of Introduced Materials in the Drift Scale Test

Description: Water samples previously acquired from superheated (>140 C) zones within hydrological test boreholes of the Drift Scale Test (DST) show relatively high fluoride concentrations (5-66 ppm) and low pH (3.1-3.5) values. In these high temperature regions of the rock, water is present superheated vapor only--liquid water for sampling purposes is obtained during the sampling process by cooling. Based on data collected to date, it is evident that the source of the fluoride and low pH is from introdu… more
Date: January 11, 2002
Creator: DeLoach, L & Jones, RL
Partner: UNT Libraries Government Documents Department
open access

A Laboratory Approach Relating Complex Resistivity Observations to Flow and Transport in Saturated and Unsaturated Hydrologic Regimes

Description: Subsurface imaging technology, such as electric resistance tomography (ERT), is rapidly improving as a means for characterizing some soil properties of the near-surface hydrologic regime. While this information can be potentially useful in developing hydrologic models of the subsurface that are required for contaminant transport investigations, an image alone of the subsurface soil regime gives little or no information about how the site will respond to groundwater flow or contaminant transport… more
Date: January 31, 2002
Creator: Martins, S A; Daily, W D & Ramirez, A L
Partner: UNT Libraries Government Documents Department
open access

Novel Processing of 81-mm Cu Shaped Charge Liners

Description: A seven-step procedure was developed for producing shaped charge liner blanks by back extrusion at liquid nitrogen temperatures. Starting with a 38.1-mm diameter, 101.6-mm long cylinder at 77K, three forging steps with a flat-top die are required to produce the solid cone while maintaining low temperature. The solid cone is forged in four individual back extrusions at 77K to produce the rough liner blank. This procedure is capable of being run in batch processes to improve the time efficiency.
Date: January 16, 2002
Creator: Schwartz, A & Korzekwa, D
Partner: UNT Libraries Government Documents Department
open access

Macro-Scale Reactive Flow Model for High-Explosive Detonation in Support of ASCI Weapon Safety Milepost

Description: Explosive grain-scale simulations are not practical for weapon safety simulations. Indeed for nearly ideal explosives with reaction zones of order 500 {micro}m, even reactive flow models are not practical for weapon safety simulations. By design, reactive flow models must resolve the reaction zone, which implies computational cells with dimension of order 50 {micro}m for such explosives. The desired result for a simulation in which the reaction zone is not resolved is that the explosive behaves… more
Date: January 3, 2002
Creator: Reaugh, J E
Partner: UNT Libraries Government Documents Department
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Chimeric Proteins to Detect DNA Damage and Mismatches

Description: The goal of this project was to develop chimeric proteins composed of a DNA mismatch or damage binding protein and a nuclease, as well as methods to detect DNA mismatches and damage. We accomplished this through protein engineering based on using polymerase chain reactions (PCRs) to create chimeras with novel functions for damage and mismatch detection. This project addressed fundamental questions relating to disease susceptibility and radiation-induced damage in cells. It also supported and en… more
Date: January 14, 2002
Creator: McCutchen-Maloney, S.; Malfatti, M. & Robbins, K. M.
Partner: UNT Libraries Government Documents Department
open access

Unclassified Computing Capability: User Responses to a Multiprogrammatic and Institutional Computing Questionnaire

Description: We are experimenting with a new computing model to be applied to a new computer dedicated to that model. Several LLNL science teams now have computational requirements, evidenced by the mature scientific applications that have been developed over the past five plus years, that far exceed the capability of the institution's computing resources. Thus, there is increased demand for dedicated, powerful parallel computational systems. Computation can, in the coming year, potentially field a capabili… more
Date: January 29, 2002
Creator: McCoy, M & Kissel, L
Partner: UNT Libraries Government Documents Department
open access

Strobe Light Deterrent Efficacy Test and Fish Behavior Determination at Grand Coulee Dam Third Powerplant Forebay

Description: This report describes the work conducted during the first year of a long-term study to assess the efficacy of a prototype strobe light system in eliciting a negative phototactic response in kokanee and rainbow trout. The strobe light system is being evaluated as a means to prevent entrainment (and subsequent loss) of fish at the entrance to the forebay adjacent to the third powerplant at Grand Coulee Dam. Pacific Northwest National Laboratory and the Colville Confederated Tribes are collaborati… more
Date: January 29, 2002
Creator: Simmons, Mary Ann; Johnson, Robert L.; McKinstry, Craig A.; Anglea, Steven M.; Simmons, Carver S.; Thorsten, Susan L. et al.
Partner: UNT Libraries Government Documents Department
open access

Laser Science and Technology Program Update 2001

Description: The Laser Science and Technology (LS&T) Program's mission is to develop advanced solid-state lasers, optics, materials technologies, and applications to solve problems and create new capabilities of importance to the Nation and the Laboratory. A top, near-term priority is to provide technical support to the National Ignition Facility (NIF) to ensure activation success. LS&T provides the NIF Programs with core competencies and supports its economic viability. The primary objectives of LS… more
Date: January 1, 2002
Creator: Chen, H L & Hackel, L A
Partner: UNT Libraries Government Documents Department
open access

Tank Leak Experiment at the Mock Tank Site, 200 East Area: Electrical Resistance Tomography-Preliminary Results

Description: Electrical resistance measurements were used to monitor several releases of brine from the Mock Tank Test site at the 200 East Area. Three different methods were used to analyze the data: (1) a simple average of the raw data was used as an indicator of the presence/absence of a leak, (2) tomography of the region beneath the tank using data from steel-cased borehole, and (3) tomography of the region beneath the tank using data from vertical electrode arrays. Each of these methods was able to det… more
Date: January 18, 2002
Creator: Ramirez, A; Daily, W & Binley, A
Partner: UNT Libraries Government Documents Department
open access

Development of Tritium AMS for Biomedical Sciences Research

Description: Tritium ({sup 3}H) is a radioisotope that is extensively utilized in biological research. Normally in the biological sciences, {sup 3}H is quantified by liquid scintillation counting. For the most sensitive measurements, liquid scintillation counting requires large samples and counting times of several-hours. In contrast, provisional studies at LLNL's Center for Accelerator Mass Spectrometry have demonstrated that Accelerator Mass Spectrometry (AMS) can be-used to quantify {sup 3}H in milligram… more
Date: January 1, 2002
Creator: Dingley, K H & Chiarappa-Zucca, M L
Partner: UNT Libraries Government Documents Department
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Development of Direct and Optical Polarized Nuclear Magnetic Resonance (NMR) Methods for Characterization and Engineering of Mesophased Molecular Structures

Description: The development of NMR methods for the characterization of structure and dynamics in mesophase composite systems was originally proposed in this LDRD. Mesophase systems are organic/inorganic hybrid materials whose size and motional properties span the definition of liquids and solids, such as highly viscous gels or colloidal suspensions. They are often composite, ill defined, macromolecular structures that prove difficult to characterize. Mesophase materials are of broad scientific and programm… more
Date: January 29, 2002
Creator: Maxwell, R; Baumann, T & Taylor, B
Partner: UNT Libraries Government Documents Department
open access

Proceedings of the 3rd US-Japan Workshop on Plasma Polarization Spectroscopy

Description: The third US-Japan Workshop on Plasma Polarization Spectroscopy was held at the Lawrence Livermore National Laboratory in Livermore, California, on June 18-21, 2001. The talks presented at this workshop are summarized in these proceedings. The papers cover both experimental investigation and applications of plasma polarization spectroscopy as well as the theoretical foundation and formalisms to understand and describe the polarization phenomena. The papers give an overview of the history of pla… more
Date: January 2, 2002
Creator: Beiersdorfer, P & Flyimoto, T
Partner: UNT Libraries Government Documents Department
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Multiscale Surgical Telerobots

Description: A project was undertaken to improve robotic surgical tools for telerobotic minimally invasive surgery. The major objectives were to reduce the size of the tools to permit new surgical procedures in confined spaces such as the heart and to improve control of surgical tools by locating positional sensors and actuators at the end effector rather than external to the patient as is currently the state of the technology. A new compact end-effector with wrist-like flexibility was designed. Positional … more
Date: January 23, 2002
Creator: Miles, R. R.; Seward, K. P.; Benett, W. J.; Tendick, F.; Bentley, L. & Stephan, P. L.
Partner: UNT Libraries Government Documents Department
open access

Determining the Structure of Biomaterials Interfaces using Synchrotron-based X-ray Diffraction

Description: The purpose of this project is to explore the feasibility of using surface X-ray diffraction (SXRD) to determine the structure of biomineral surfaces in electrolyte solutions and of the adsorbed layer of acidic amino acids that are believed to play a central role in the control of biomineral formation and function. The work is a critical component in the development of an integrated picture of the physical and chemical basis for deposition and dissolution at solid-liquid interfaces in biologica… more
Date: January 24, 2002
Creator: McBride, M
Partner: UNT Libraries Government Documents Department
open access

Lattice Boltzmann Modeling of Micro-fluidic Devices

Description: The results to date do indeed show that the lattice Boltzmann method accurately solves relevant, non-trivial flow problems. The parallelization of both the fluid and the mobile species in flow has enhanced this capability such that it is useful for solving relevant problems in a timely fashion. The initial studies of stationary or capture species revealed evidence of hydrodynamic screening between upstream and downstream particles. Numerical studies reveal that the critical length for which the… more
Date: January 28, 2002
Creator: Clague, D S
Partner: UNT Libraries Government Documents Department
open access

Assessment of K Basin Sludge Volume Expansion Resulting from Uranium Corrosion During Storage

Description: K Basin sludge contains metallic uranium and uranium oxides that will corrode and hydrate during storage. The end-state (final) corrosion products will have a lower particle density and a higher void fraction (or volume fraction of sludge occupied by water) than the starting-state sludge at the beginning of storage. As the particle density and void fraction change, the volume occupied by a given mass of sludge will also change. The purpose of this report is to quantify how the various types and… more
Date: January 23, 2002
Creator: Schmidt, Andrew J. & Delegard, Calvin H.
Partner: UNT Libraries Government Documents Department
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