7,350 Matching Results

Search Results

Results: 1 - 24 next
open access

2009 Toxic Chemical Release Inventory Report for the Emergency Planning and Community Right-to-Know Act of 1986, Title III, Section 313

Description: For reporting year 2009, Los Alamos National Laboratory (LANL) submitted a Form R report for lead as required under the Emergency Planning and Community Right-to- Know Act (EPCRA) Section 313. No other EPCRA Section 313 chemicals were used in 2009 above the reportable thresholds. This document was prepared to provide a description of the evaluation of EPCRA Section 313 chemical use and threshold determinations for LANL for calendar year 2009, as well as to provide background information about d… more
Date: November 1, 2010
Creator: (ENV-ES), Environmental Stewardship Group
Partner: UNT Libraries Government Documents Department
open access

Periodic Boundary Conditions in the ALEGRA Finite Element Code

Description: This document describes the implementation of periodic boundary conditions in the ALEGRA finite element code. ALEGRA is an arbitrary Lagrangian-Eulerian multi-physics code with both explicit and implicit numerical algorithms. The periodic boundary implementation requires a consistent set of boundary input sets which are used to describe virtual periodic regions. The implementation is noninvasive to the majority of the ALEGRA coding and is based on the distributed memory parallel framework in AL… more
Date: November 1, 1999
Creator: AIDUN,JOHN B.; ROBINSON,ALLEN C. & WEATHERBY,JOE R.
Partner: UNT Libraries Government Documents Department
open access

Quantitative Analysis of Microstructure in Polysiloxanes Using High Resolution Si29 NMR Spectroscopy: Investigation of Lot Variability in the LVM97 and HVM97 PDMS/PDPS Copolymers

Description: The quantitative analysis of microstructure and sequence distribution in polysiloxane copolymers using high-resolution solution {sup 29}Si NMR is reported. Copolymers containing dimethylsiloxane (DMS) and diphenysiloxane (DPS) monomer units prepared with either high vinyl content (HVM) or low vinyl content (LVM) were analyzed. The average run length (R{sub exp}), the number average sequence length (l{sub A}, l{sub B}), along with the various linkage probabilities (p{sub AA}, p{sub AB}, p{sub BA… more
Date: November 1, 2002
Creator: ALAM, TODD M.
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic Detection of Pathogens

Description: The goal of this LDRD Research project was to provide a preliminary examination of the use of infrared spectroscopy as a tool to detect the changes in cell cultures upon activation by an infectious agent. Due to a late arrival of funding, only 5 months were available to transfer and setup equipment at UTTM,develop cell culture lines, test methods of in-situ activation and collect kinetic data from activated cells. Using attenuated total reflectance (ATR) as a sampling method, live cell cultures… more
Date: November 1, 2000
Creator: ALAM,M. KATHLEEN; TIMLIN,JERILYN A.; MARTIN,LAURA E.; HJELLE,DRIAN; LYONS,RICK & GARRISON,KRISTIN
Partner: UNT Libraries Government Documents Department
open access

Salinas - User's Notes

Description: Salinas provides a massively parallel implementation of structural dynamics finite element analysis, required for high fidelity, validated models used in modal, vibration, static and shock analysis of weapons systems. This document provides a users guide to the input for Salinas. Details of input specifications for the different solution types, output options, element types and parameters are included. The appendices contain detailed examples, and instructions for running the software on parall… more
Date: November 1, 1999
Creator: ALVIN,KENNETH F.; BHARDWAJ,MANOJ K.; DRIESSEN,BRIAN; REESE,GARTH M. & SEGALMAN,DANIEL J.
Partner: UNT Libraries Government Documents Department
open access

DESIGN AND ANALYSIS OF THE SNS CCL HOT MODEL WATER COOLING SYSTEM USING THE SINDA/FLUINT NETWORK MODELING TOOL

Description: This report presents results for design and analysis of the hot model water cooling system for the Spallation Neutron Source (SNS) coupled-cavity linac (CCL). The hot model, when completed, will include segments for both the CCL and coupled-cavity drift-tube linac (CCDTL). The scope of this report encompasses the modeling effort for the CCL portion of the hot model. This modeling effort employed the SINDA/FLUINT network modeling tool. This report begins with an introduction of the SNS hot model… more
Date: November 1, 1999
Creator: AMMERMAN, C. & BERNARDIN, J.
Partner: UNT Libraries Government Documents Department
open access

Hanford Dose Overview Program. Comparison of AIRDOS-EPA and Hanford Site Dose Codes

Description: Radiation dose commitments for persons in the Hanford environs calculated using AIRDOS-EPA were compared with those calculated using a suite of Hanford codes: FOOD, PABLM, DACRIN, and KRONIC. Dose commitments to the population and to the maximally exposed individual (MI) based on annual releases of eight radionuclides from the N-Reactor, were calculated by these codes. Dose commitments from each pathway to the total body, lung, thyroid, and lower large intestine (LLI) are given for the populati… more
Date: November 1, 1985
Creator: Aaberg, R. L. & Napier, B. A.
Partner: UNT Libraries Government Documents Department
open access

An application of robust parameter design using an alternative to Taguchi methods

Description: The factors of interest in designing a product or process can generally be classified into two categories, controllable and uncontrollable. Controllable (or control) factors represent those factors which can be regulated. Examples of control factors include: the choice of material, flow rates, processing pressures, times and temperatures. Uncontrollable (noise) factors are those that are either difficult, impossible or too expensive to control during actual production or use. Examples of noise … more
Date: November 1, 1996
Creator: Abate, M. L.; Morrow, M. C. & Kuczek, T.
Partner: UNT Libraries Government Documents Department
open access

Higgs-photon associated production at hadron colliders

Description: The authors present cross sections for the reactions p{anti p} {yields} H{gamma} and pp {yields} H{gamma} arising from the subprocess q{anti q} {yields} H{gamma}. The calculation includes the complete one-loop contribution from all light quarks and is the main source of Higgs-photon associated production in hadron colliders. At Tevatron energies, the cross section is typically 0.1 fb or less, while at LHC energies it can exceed 1.0fb.
Date: November 1, 1997
Creator: Abbasabadi, A.; Bowser-Chao, D.; Dicus, D.A. & Repko, W.W.
Partner: UNT Libraries Government Documents Department
open access

Water-related planning and design at energy firms

Description: Water related planning and design at energy firms are examined. By identifying production alternatives and specifying the cost of these alternatives under a variety of conditions, one gains insight into the future pattern of water use in the energy industry and the response of industry to water-related regulation. In Part II, the three principal decisions of industry that affect water allocation are reviewed: where to build plants, where to get water, and how much water to use. The cost of wate… more
Date: November 1, 1980
Creator: Abbey, D & Lucero, F
Partner: UNT Libraries Government Documents Department
open access

Quasi-free ({ital e,e`p}) reactions: the first look from CEBAF

Description: Coincidence cross sections for ({ital e,e{sup `}p}) quasi-elastic scattering were measured at CEBAF with high statistical precision for C, Fe, and Au targets for 0.6 {lt} Q{sup 2} {lt} 3.3 GeV{sup 2}. {ital E{sub m}} and {ital P{sub m}} distributions obtained from a preliminary analysis are in reasonable agreement with prior data from SLAC, The preliminary results are compared with a PWIA calculation to determine the nuclear transparency as a function of Q{sup 2} and A. A. Rosenbluth analysis t… more
Date: November 1, 1996
Creator: Abbott, D.; Amatuoni, T. & Armstrong, C.
Partner: UNT Libraries Government Documents Department
open access

Roles and Delegation of Authority (R/DA) System

Description: The processes of defining managerial roles and providing for delegation of authority are essential to any enterprise. At most large organizations, these processes are defined in policy manuals and through sets of standard operating procedures for many, if not all, business and administrative functions. Many of these staff-initiated, administrative functions require the routing of documents for approval to one or more levels of management. These employee-oriented, back office types of workflows … more
Date: November 1, 1999
Creator: Abbott, John P.; Hutchins, James C. & Schoch, David G.
Partner: UNT Libraries Government Documents Department
open access

Fast reactor analytical shielding progress report for July and August 1973. 189a No. 10318, activity No. HN 04 01 01 1

Description: Analytical shielding work performed for the fast reactor program during the months of July and August included calculations for both the FFTF and the Demo plant, computer code development, analyses of TSF experiments, and a cross- section sensitivity study of a TSF experiment. Most of the FFTF studies were aimed at determining the effect of various design changes on the dose rates at the maintenance deck during reactor operation, in particular, the effects of penetrations through the radial cav… more
Date: November 1, 1973
Creator: Abbott, L. S.; Childs, R. L.; Engle, W. W. & Maerker, R. E.
Partner: UNT Libraries Government Documents Department
open access

CONTINUED DEVELOPMENT OF THE ROTARY COMBUSTOR FOR REFIRING PULVERIZED COAL BOILERS

Description: The Rotary Combustor is a novel concept for burning coal with low SO{sub 2} and NO{sub x} emissions. It burns crushed coal in a fluid bed where the bed is maintained in a rotating drum by centripetal force. Since this force may be varied, the combustor may be very compact, and thus be a direct replacement for a p.c. burner on existing boilers. The primary objective of this project is to demonstrate that a typical industrial boiler can be refired with the modified prototype Rotary Combustor to b… more
Date: November 1, 2000
Creator: Abbott, Murray F.; Mereb, Jamal B.; Hanson, Simon P. & Virr, Michael J.
Partner: UNT Libraries Government Documents Department
open access

The calculation of satellite line structures in highly stripped plasmas

Description: This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Recently developed high-resolution x-ray spectrographs have made it possible to measure satellite structures from various plasma sources with great detail. These lines are weak optically thin lines caused by the decay of dielectronic states and generally accompany the resonance lines of H-like and He-like ions. The Los Alamos atomic physics and kine… more
Date: November 1, 1998
Creator: Abdallah, J. Jr.; Kilcrease, D. P.; Faenov, A. Ya. & Pikuz, T. A.
Partner: UNT Libraries Government Documents Department
open access

Growth of molten core debris pools in concrete. Progress report, March 1, 1977--November 30, 1977. [LMFBR]

Description: Experiments have been conducted using a volumetrically-heated pool with noncondensable gas injection at the boundaries to simulate the heat transfer processes taking place in molten core debris/concrete systems. Measurements of the upward, downward, and sideward heat transfer rates have been made over wide ranges of internal Rayleigh number (6.0 x 10/sup 5/ < Ra < 2.7 x 10/sup 9/), superficial gas velocity (0 < V/sub g/ < 2.5 cm/min), and pool aspect ratio (1.32 < W/L < 5.16).… more
Date: November 1, 1977
Creator: Abdel-Khalik, S I
Partner: UNT Libraries Government Documents Department
open access

Consolidation and shear failure leading to subsidence and settlement. Part I

Description: Subsidence and settlement are phenomena that are much more destructive than generally thought. In shallow land burials they may lead to cracking of the overburden and eventual exposure and escape of waste material. The primary causes are consolidation and cave-ins. Laboratory studies performed at Los Alamos permit us to predict settlement caused by consolidation or natural compaction of the crushed tuff overburden. We have also investigated the shear failure characteristics of crushed tuff that… more
Date: November 1, 1985
Creator: Abeele, W.V.
Partner: UNT Libraries Government Documents Department
open access

Chemical maximum humidity indicator update report. Topical report

Description: Raw materials and manufactured parts sometimes must be kept in a controlled-humidity environment. The use of moisture-sensitive systems to indicate the maximum level of humidity exposure is discussed. A chemical indicator made from deliquescent salts and water-soluble dyes provides an irreversible color change at discrete levels of relative humidity. The performance and long-term-stability characteristics of the indicator are described.
Date: November 1, 1978
Creator: Abel, W.B.
Partner: UNT Libraries Government Documents Department
open access

Development of an electrochemical hydrogen separator

Description: The electrochemical hydrogen separator (EHS), under development at ERC, has several attractive features: The operating temperature (150{degree}C--200{degree}C) is higher than those associated with the currently available devices and is compatible with the low temperature shift reactors. The EHS can operate at atmospheric as well as elevated pressures and the product H{sub 2} is available at the feed stream pressure. High hydrogen recovery factor: 90% H{sub 2} recovery from feed streams containi… more
Date: November 1, 1992
Creator: Abens, S.; Fruchtman, J. & Kush, A.
Partner: UNT Libraries Government Documents Department
open access

Velocity Measurements at Six Fish Screening Facilities in the Yakima River Basin, Washington, Summer 1988 : Annual Report.

Description: The Bonneville Power Administration (BPA), the United States Bureau of Reclamation (USSR), and the Washington State Department of Ecology (WDOE) are funding the construction and evaluation of fish passage facilities and fish protection facilities at irrigation and hydroelectric diversions in the Yakima River Basin, Washington State. The program provides offsite enhancement to compensate for fish and wildlife losses caused by hydroelectric development throughout the Columbia River Basin, and add… more
Date: November 1, 1989
Creator: Abernethy, C. Scott; Neitzel, Duane A. & Lusty, E. William
Partner: UNT Libraries Government Documents Department
open access

Neutron-induced mutation experiments. Progress report, March 1, 1975-- February 29, 1976

Description: The relative mutagenic effectiveness of neutrons of different energies were compared with x radiation in mice and Drosophila oogonia employing X-linked recessive lethal and specific locus mutation tests. The energies and doses used were 0.68 MeV, 2 MeV, and 6 MeV (250 and 500$sup 0$R), and 15 MeV (250, 500, and 1000$sup 0$R). The data thus far collected from the recessive lethal test indicate that 0.68 MeV neutrons have the highest RBE among the energies tested, followed by 6 and 2 MeV. The spe… more
Date: November 1, 1975
Creator: Abrahamson, S.
Partner: UNT Libraries Government Documents Department
open access

Neutron-induced mutation experiments. Progress report, March 1, 1976--February 28, 1977. [In Drosophila]

Description: Results are from studies of experiments in Drosophila on the relative mutagenic effectiveness of neutrons of different energies employing X-linked recessive lethal and specific locus mutation tests. The energies and doses employed to data are .43 MeV (500, 1000, and 1500 R, in progress), .68 MeV (250, 500, 1000, and 1500 R), 2 and 6 MeV (250 and 500 R), and 15 MeV (250, 500, 1000, 1500 and 3000 R). .68 MeV neutrons appear to have an RBE between 3.3 to 4.5, 15 MeV neutrons an RBE between 1.9 to … more
Date: November 1, 1976
Creator: Abrahamson, S.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen