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2001 Gordon Research Conference on Organometallic Chemistry. Final progress report [agenda and attendee list]

Description: The Gordon Research Conference on Organometallic Chemistry was held at Salve Regina University, Newport, Rhode Island, July 22-27, 2001. The conference had 133 participants. The attendees represented the spectrum of endeavor in this field, coming from academia, industry, and government laboratories, and included US and foreign scientists, senior researchers, young investigators, and students. Emphasis was place on current unpublished research and discussion of the future target areas in this fi… more
Date: July 27, 2001
Creator: Burns, Carol
Item Type: Refine your search to only Report
open access

Arbitrarily High Order Transport Method of the Characteristic Type for Tetrahedral Grids

Description: A formalism is derived for the Arbitrarily High Order Transport (AHOT) method of the Characteristic type (AHOT-C) in three-dimensional geometry for unstructured grids (UG). The resulting equations are implemented in a computer code, AHOT-C-UG, in the C language. The transport solution on the unstructured grid is stored as two inter-linked lists of cell and face flux moments. This arrangement allows the transport sweep to select the order of evaluation dynamically so that the typical recursive o… more
Date: June 27, 2001
Creator: Azmy, Y. Y.
Item Type: Refine your search to only Article
open access

Beryllium Materials for National Ignition Facility Targets LDRD Final Report

Description: The National Ignition Facility (NIF) will require spherical ignition capsules approximately 2 mm in diameter with a 120- to 150-pm-thick ablator. Beryllium-based alloys are promising candidates for an ablator material due to their combination of low opacity and relatively high density (compared to polymer coatings). For optimum performance, the Be-coated capsules require a smooth surface finish, uniform thickness, microscopic homogeneity, and preferably high strength. The coatings must contain … more
Date: February 27, 2001
Creator: McEachern, R L
Item Type: Refine your search to only Report
open access

Breeding 10{sup 10}/s Radioactive Nuclei in a Compact Plasma Focus Device

Description: In the early 90's, it was discovered that a Plasma Focus (PF) system self-creates a plasma-tarp in which high energy-threshold nuclear-reactions occur at high reaction rates. Short life radioisotopes (SLR)s such as {sup 18}F, {sup 17}F, {sup 15}O, {sup 14}O, {sup 13}N have been generated (10{sup 6} - 10{sup 8} per pulse) with a PF-machine using 7 kJ energy storage to produce the plasmas. {beta}{sup -} radioactivity from the SLRs is measured with rugged, Geiger counters inserted into the PF-cham… more
Date: July 27, 2001
Creator: Brzosko, JANS.
Item Type: Refine your search to only Article
open access

A case study in application I/O on Linux clusters.

Description: A critical but often ignored component of system performance is the I/O system. Today's applications expect a great deal from underlying storage systems and software, and both high performance distributed storage and high level interfaces have been developed to fill these needs. In this paper they discuss the I/O performance of a parallel scientific application on a Linux cluster, the FLASH astrophysics code. This application relies on three I/O software components to provide high performance p… more
Date: July 27, 2001
Creator: Ross, R.; Nurmi, D.; Cheng, A. & Zingale, M.
Item Type: Refine your search to only Article
open access

The CDF data acquisition system for Tevatron Run II

Description: The CDF experiment at the Fermilab Tevatron has been significantly upgraded for the collider Run II, which started in March 2001 and is scheduled to last until 2006. Instantaneous luminosities of 10{sup 32} cm{sup -2} s{sup -1} and above are expected. A data acquisition system capable of efficiently recording the data has been one of the most critical elements of the upgrade. Key figures are the ability to deal with the short bunch spacing of 132 ns, event sizes of the order of 250 kB, and perm… more
Date: August 27, 2001
Creator: Meyer, Arnd
Item Type: Refine your search to only Article
open access

The CDF Run 2 Offline Computer Farms

Description: Run 2 at Fermilab began in March 2001. CDF will collect data at a maximum rate of 20 MByte/sec during the run. The offline reconstruction of this data must keep up with the data taking rate. This reconstruction occurs on a large PC farm, which must have the capacity for quasi-real time data reconstruction, for reprocessing of some data and for generation and processing of Monte Carlo samples. In this paper they give the design requirements for the farm, describe the hardware and software design… more
Date: August 27, 2001
Creator: al., Jaroslav Antos et
Item Type: Refine your search to only Article
open access

Ceramic Membranes for Hydrogen Production From Coal

Description: The present project is devoted to developing hydrogen permselective silica membranes supported on composite supports to achieve high flux and selectivity. The supports consist of a thin zeolite silicalite layer coated on {alpha}-Al{sub 2}O{sub 3} tubes of mean pore size 1 {micro}m. The zeolite layer is grown by reaction in a suitable silicate solution at 95 C. After two or three reaction periods a layer of silicalite crystals about 20 {micro}m thick grows inside the pores of alumina. In additio… more
Date: November 27, 2001
Creator: Gavalas, George R.
Item Type: Refine your search to only Report
open access

Characterization of Contaminant Transport by Gravity, Capillarity and Barometric Pumping in Heterogeneous Vadose Zones

Description: This final report summarizes the work and accomplishments of our three-year project. We have pursued the concept of a Vadose-Zone Observatory (VZO) to provide the field laboratory necessary for carrying out the experiments required to achieve the goals of this research. Our approach has been (1) to carry out plume release experiments at a VZO allowing the acquisition of several different kinds of raw data that (2) are analyzed and evaluated with the aid of highly detailed, diagnostic numerical … more
Date: February 27, 2001
Creator: Carrigan, C R; Martins, S A; Ramirez, A L; Daily, W D; Hudson, G B; Ralsont, D et al.
Item Type: Refine your search to only Report
open access

Comparison of Theory with Rotation Measurements in JET ICRH Plasmas

Description: Plasma rotation appears to improve plasma performance by increasing the E x B flow shearing rate, thus decreasing radial correlations in the microturbulence. Also, plasma rotation can increase the stability to resistive MHD modes. In the Joint European Torus (JET), toroidal rotation rates omega (subscript ''tor'') with high Mach numbers are generally measured in NBI-heated plasmas (since the neutral beams aim in the co-plasma current direction). They are considerably lower with only ICRH (and O… more
Date: June 27, 2001
Creator: Budny, R. V.; Chang, C. S.; Giroud, C.; Goldston, R. J.; McCune, D.; Ongena, J. et al.
Item Type: Refine your search to only Report
open access

A complete analytic inversion of supernova lines in the Sobolevapproximation

Description: We show that the shape of P-Cygni line profiles of photospheric phase supernova can be analytically inverted to extract both the optical depth and source function of the line -- i.e. all the physical content of the model for the case when the Sobolev approximation is valid. Under various simplifying assumptions, we derive formulae that give S(r) and {tau}(r) in terms of derivatives of the line flux with respect to wavelength. The transition region between the minimum and maximum of the line pro… more
Date: September 27, 2001
Creator: Kasen, Daniel; Branch, David; Baron, E. & Jeffery, David
Item Type: Refine your search to only Article
open access

Corrective Action Investigation Plan for Corrective Action Unit 34: Area 3 Contaminated Waste Site, Nevada Test Site, Nevada (Rev. 0, March 2001)

Description: This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Operations Office's approach to collect the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 34 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 34 consists of four Corrective Action Sites (CASs). The CAU is located within the Area 3 Compound at the Nevada Test Site (NT… more
Date: March 27, 2001
Creator: United States. National Nuclear Security Administration. Nevada Operations Office.
Item Type: Refine your search to only Report
open access

Critical infrastructure assurance guidelines for municipal governments : planning for electric power disruptions.

Description: The economic prosperity and the well-being of our nation's communities depend on the reliable functioning of critical infrastructures: transportation, banking and finance, information and communications, water supply systems, emergency services, and especially energy (electric power, oil, and natural gas). In the new economy, these infrastructures are increasingly reliant on information technologies and are strongly affected by restructuring and other market forces. They are much more heavily i… more
Date: March 27, 2001
Item Type: Refine your search to only Report
open access

Denuded Zones, Diffusional Creep, and Grain Boundary Sliding

Description: The appearance of denuded zones following low stress creep in particle-containing crystalline materials is both a microstructural prediction and observation often cited as irrefutable evidence for the Nabarro-Herring mechanism of diffusional creep. The denuded zones are predicted to be at grain boundaries that are orthogonal to the direction of the applied stress. Furthermore, their dimensions should account for the accumulated plastic flow. In the present paper, the evidence for such denuded z… more
Date: June 27, 2001
Creator: Wadsworth, J; Ruano, O A & Sherby, O D
Item Type: Refine your search to only Article
open access

DESCRIPTION OF THE RHIC SEQUENCER SYSTEM.

Description: The movement of the Relativistic Heavy Ion Collider (RHIC) through its various states (eg. injection, acceleration, storage, collisions) is controlled by an application called the Sequencer. This program orchestrates most magnet and instrumentation systems and is responsible for the coordinated acquisition and saving of data from various systems. The Sequencer system, its software infrastructure, support programs, and the language used to drive it are discussed in this paper. Initial operationa… more
Date: November 27, 2001
Creator: Dottavio, T.; Frak, B.; Morris, J.; Satogata, T. & van Zeijts, J.
Item Type: Refine your search to only Article
open access

Detecting Translation Errors in CAD Surfaces and Preparing Geometries for Mesh Generation

Description: The authors have developed tools for the efficient preparation of CAD geometries for mesh generation. Geometries are read from IGES files and then maintained in a boundary-representation consisting of a patchwork of trimmed and untrimmed surfaces. Gross errors in the geometry can be identified and removed automatically while a user interface is provided for manipulating the geometry (such as correcting invalid trimming curves or removing unwanted details). Modifying the geometry by adding or de… more
Date: August 27, 2001
Creator: Petersson, N Anders & Chand, K K
Item Type: Refine your search to only Article
open access

Development and Evaluation of Rhenium-188-labeled Radioactive Stents for Restenosis Therapy and Development of Strategies for Radiolabeling Brachytherapy Sources with Palladium-103

Description: This project involved collaboration between InnerDyne, Inc., and radiopharmaceutical research programs at the Oak Ridge National Laboratory (ORNL) and Brookhaven National Laboratory (BNL) which explored new strategies for the development and animal testing of radioactive rhenium-188-labeled implantable stent sources for the treatment of coronary restenosis after angioplasty and the development of chemical species radiolabeled with the palladium-103 radioisotope for the treatment of cancer. Rhen… more
Date: April 27, 2001
Creator: Knapp, F.F.
Item Type: Refine your search to only Report
open access

The Development of Layered Photonic Band Gap Structures Using a Micro-Transfer Molding Technique

Description: Over the last ten years, photonic band gap (PBG) theory and technology have become an important area of research because of the numerous possible applications ranging from high-efficiency laser diodes to optical circuitry. This research concentrates on reducing the length scale in the fabrication of layered photonic band gap structures and developing procedures to improve processing consistency. Various procedures and materials have been used in the fabrication of layered PBG structures. This r… more
Date: June 27, 2001
Creator: Sutherland, Kevin Jerome
Item Type: Refine your search to only Thesis or Dissertation
open access

EBS Radionuclide Transport Abstraction

Description: The purpose of this work is to develop the Engineered Barrier System (EBS) radionuclide transport abstraction model, as directed by a written development plan (CRWMS M&O 1999a). This abstraction is the conceptual model that will be used to determine the rate of release of radionuclides from the EBS to the unsaturated zone (UZ) in the total system performance assessment-license application (TSPA-LA). In particular, this model will be used to quantify the time-dependent radionuclide releases … more
Date: June 27, 2001
Creator: Schreiner, R.
Item Type: Refine your search to only Report
open access

Effect of Boronization on Ohmic Plasmas in NSTX

Description: Boronization of the National Spherical Torus Experiment (NSTX) has enabled access to higher density, higher confinement plasmas. A glow discharge with 4 mTorr helium and 10% deuterated trimethyl boron deposited 1.7 g of boron on the plasma facing surfaces. Ion beam analysis of witness coupons showed a B+C areal density of 10 to the 18 (B+C) cm to the -2 corresponding to a film thickness of 100 nm. Subsequent ohmic discharges showed oxygen emission lines reduced by x15, carbon emission reduced b… more
Date: March 27, 2001
Creator: Skinner, C. H.; Kugel, H.; Maingi, R.; Wampler, W. R.; Blanchard, W.; Bell, M. et al.
Item Type: Refine your search to only Report
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