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Results: 1 - 24 of 75,364 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
1.1" Ammunition Clipping Room on Superstructure Dk.

1.1" Ammunition Clipping Room on Superstructure Dk.

Blueprint depicting technical details of Battleship Texas.
Date: December 20, 1940
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
A 1.8 Mev K+ injector for the high current beam transport experiment fusion (open access)

A 1.8 Mev K+ injector for the high current beam transport experiment fusion

For the High Current Beam Transport Experiment (HCX) at LBNL, an injector is required to deliver up to 1.8 MV of 0.6 A K{sup +} beam with an emittance of {approx}1 p-mm-mrad. We have successfully operated a 10-cm diameter surface ionization source together with an electrostatic quadrupole (ESQ) accelerator to meet these requirements. The pulse length is {approx}4 {micro}s, firing at once every 10-15 seconds. By optimizing the extraction diode and the ESQ voltages, we have obtained an output beam with good current density uniformity, except for a small increase near the beam edge. Characterization of the beam emerging from the injector included measurements of the intensity profile, beam imaging, and transverse phase space. These data along with comparison to computer simulations provide the knowledge base for designing and understanding future HCX experiments.
Date: May 20, 2002
Creator: Kwan, J. W.; Bieniosek, F. M.; Henestroza, E.; Prost, L. & Seidl, P.
Object Type: Article
System: The UNT Digital Library
1 GeV CW nonscaling FFAG for ADS, and magnet parameters (open access)

1 GeV CW nonscaling FFAG for ADS, and magnet parameters

Multi-MW proton driver capability remains a challenging, critical technology for many core HEP programs, particularly the neutrino ones such as the Muon Collider and Neutrino factory, and for high-profile energy applications such as Accelerator Driven Subcritical Reactors (ADS) and Accelerator Transmutation of Waste for nuclear power and waste management. Work is focused almost exclusively on an SRF linac, as, to date, no re-circulating accelerator can attain the 10-20 MW capability necessary for the nuclear applications. Recently, the concept of isochronous orbits has been explored and developed for nonscaling FFAGs using powerful new methodologies in FFAG accelerator design. Work is progressing on a stable, high-intensity, 1 GeV isochronous FFAG. Initial specifications of novel magnets with the nonlinear radial fields required to support isochronous operation are also reported here.
Date: May 20, 2012
Creator: Johnstone, C.; Meot, F.; Snopok, P. & Weng, W.
Object Type: Article
System: The UNT Digital Library
(02.2) Scoping experiments; (02.3) long-term corrosion testing and properties evaluation of candidate waste package basket material (open access)

(02.2) Scoping experiments; (02.3) long-term corrosion testing and properties evaluation of candidate waste package basket material

The work described in this activity plan addresses Information Need 2.7.3 of the Yucca Mountain Site Characterization Plan (l), which reads Determination that the design criteria in lOCFR60.130 through 60.133 and any appropriate additional design objectives pertaining to criticality control have been met. This work falls under section WBS 1.2.2.5 2 (Basket Materials) of WBS 1.2.2.5 (Waste Package Materials) in the Work Breakdown Structure of the Yucca Mountain Site Characterization Project.
Date: December 20, 1996
Creator: VanKonynenburg, R. A.
Object Type: Report
System: The UNT Digital Library
2-D Axisymmetric Line Transport (open access)

2-D Axisymmetric Line Transport

The methods used in the ALTAIR code for computing the transfer of spectral line radiation in two-dimensional axially-symmetric geometry are described. ALTAIR uses a variable-Eddington-tensor approach, in which the transfer equation of non-coherent line scattering is written in moment form, and the moments are closed with an assumed tensor relating the monochromatic pressure tensor and energy density; this Eddington tensor is obtained self-consistently using an accurate angle-dependent solution of the transfer equation. The finite element method for solving the moment system, and the discontinuous finite element method for solving the S{sub n} equation of transfer are described. Two applications of the method are discussed: line formation in uniform cylinders with different length-diameter ratios, and monochromatic transfer on an irregular x-y mesh (the Mordant test problem). 13 refs., 2 figs.
Date: November 20, 1990
Creator: Castor, John I.; Dykema, Pieter G. & Klein, Richard I.
Object Type: Article
System: The UNT Digital Library
A 2-D Pore-Network Model of the Drying of Single-Component Liquids in Porous Media (open access)

A 2-D Pore-Network Model of the Drying of Single-Component Liquids in Porous Media

The drying of liquid-saturated porous media is typically approaching using macroscopic continuum models involving phenomenological coefficients. Insight on these coefficients can be obtained by a more fundamental study at the pore- and pore-network levels. In this report, a model based on pore-network representation of porous media that accounts for various process at the pore-scale is presented. These include mass transfer by advection and diffusion in the gas phase, viscous flow in liquid and gas phases and capillary effects at the gas-liquid menisci in the pore throats.
Date: January 20, 2000
Creator: Yortsos, Yanic C.; Yiotis, A. G.; Stubos, A. K. & Boundovis, A. G.
Object Type: Report
System: The UNT Digital Library
2, Pulse-mode expansions and refractive indices in plane-wave propagation (open access)

2, Pulse-mode expansions and refractive indices in plane-wave propagation

This memo presents basic background theory for treating simultaneous propagation of electromagnetic pulses of various colors, directed along a common ray, through a molecular vapor. The memo discusses some techniques for expanding the positive frequency part of the transverse electric field into pulse modes, characterized by carrier frequencies within a modulated envelope. We discuss, in the approximation of plane waves with slowly varying envelopes, a set of uncoupled envelope equations in which a polarization mode-envelope acts as a source for an electric-field envelope. These equations, when taken with a prescription for the polarization field, are the basic equations of plane-wave pulse propagation through a molecular medium. We discuss two ways of treating dispersive media, one based upon expansions in the frequency domain and the other based in the time domain. In both cases we find envelope equations that involve group velocities. This memo represents a portion of a more extensive treatment of propagation to be presented separately. Many of the equations presented here have been described in various books and articles. They are collected and described here as a summary and review of contemporary theory.
Date: June 20, 1987
Creator: Shore, B. W.; Sacks, R.; Karr, T.; Morris, J. & Paisner, J. A.
Object Type: Report
System: The UNT Digital Library
2$sup 0$K vacuum pumping system for Baseball II (open access)

2$sup 0$K vacuum pumping system for Baseball II

A vacuum pumping system that provides a cryo surface for condensing and freezing of H/sub 2/ gas is described. A closed-loop vacuum system was designed and built at Lawrence Livermore Laboratory to pump down the neutralizer LH/sub e/ dewar with a volurae of 350 l and the lambda point dewar with a LH/sub e/ volume of 250 l. Both of these dewars can be pumped down simultaneously or one at a time. 100% of the H/sub e/ gas is recovered free of contaminations. The vacuum pump can handle 340 SCFM of gas. The LH/sub e/ dewars are pumped down below the lambda point. This condition reduces the LH/sub e/ container wall temperature to 2.1 deg K giving a base pressure of 10/sup -13/ torr for H/sub 2/ gas/sup 2/. To attain a stable condition the LH /sub e/ baths are puuped down to 33 torr or lower to give a surface temperatare of about 2/sup 0/K/sup 3/. The Baseball II helium factlity is a close loop system. The H/sub e/ gas is recovered from all the LH/sub e/ usage point. This gas is accumulated in one of the two 8000 cu ft inflatable gas bags. The gas from the gas …
Date: August 20, 1973
Creator: Denhoy, B.S.
Object Type: Article
System: The UNT Digital Library
3-D computer simulations of EM field sin the APS vacuum chamber. Part 2: Time-domain analysis (open access)

3-D computer simulations of EM field sin the APS vacuum chamber. Part 2: Time-domain analysis

Our simulations suggest that the strong peak around 4 GHz in the narrow gap observed in the measurements is generated by TE modes. Therefore, one should not worry about this peak insofar as the coupling impedance is concerned. On the other hand, some discrepancies between our simulations and the measurements are noticed and remain to be resolved.
Date: January 20, 1989
Creator: Chou, W.
Object Type: Report
System: The UNT Digital Library
3-D Finite Element Analysis of Induction Logging in a Dipping Formation (open access)

3-D Finite Element Analysis of Induction Logging in a Dipping Formation

Electromagnetic induction by a magnetic dipole located above a dipping interface is of relevance to the petroleum well-logging industry. The problem is fully three-dimensional (3-D) when formulated as above, but reduces to an analytically tractable one-dimensional (1-D) problem when cast as a small tilted coil above a horizontal interface. The two problems are related by a simple coordinate rotation. An examination of the induced eddy currents and the electric charge accumulation at the interface help to explain the inductive and polarization effects commonly observed in induction logs from dipping geological formations. The equivalence between the 1-D and 3-D formulations of the problem enables the validation of a previously published finite element solver for 3-D controlled-source electromagnetic induction.
Date: July 20, 2000
Creator: Everett, Mark E.; Badea, Eugene A,; Shen, Liang, C.; Merchant, Gulamabbas A. & Weiss, Chester J.
Object Type: Article
System: The UNT Digital Library
3-D Micro-Scale Machining Implementation (open access)

3-D Micro-Scale Machining Implementation

The KCP investigated milling, turning, and wire EDMing features at a micro-scale using existing equipment to find the limitations and hindrances to producing future designs.
Date: October 20, 2008
Creator: Boucher, Christopher L.
Object Type: Report
System: The UNT Digital Library
3-D TECATE/BREW: Thermal, stress, and birefringent ray-tracing codes for solid-state laser design (open access)

3-D TECATE/BREW: Thermal, stress, and birefringent ray-tracing codes for solid-state laser design

This report describes the physics, code formulations, and numerics that are used in the TECATE (totally Eulerian code for anisotropic thermo-elasticity) and BREW (birefringent ray-tracing of electromagnetic waves) codes for laser design. These codes resolve thermal, stress, and birefringent optical effects in 3-D stationary solid-state systems. This suite of three constituent codes is a package referred to as LASRPAK.
Date: July 20, 1994
Creator: Gelinas, R. J.; Doss, S. K. & Nelson, R. G.
Object Type: Report
System: The UNT Digital Library
3 V manganese oxide electrode materials for lithium batteries. (open access)

3 V manganese oxide electrode materials for lithium batteries.

None
Date: June 20, 2000
Creator: Johnson, C. S. & Thackeray, M. M.
Object Type: Article
System: The UNT Digital Library
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 11, Ed. 1 Monday, June 20, 1977 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 11, Ed. 1 Monday, June 20, 1977

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: June 20, 1977
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 46, Ed. 1 Monday, February 20, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 46, Ed. 1 Monday, February 20, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: February 20, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 50, Ed. 1 Monday, March 20, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 19, No. 50, Ed. 1 Monday, March 20, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: March 20, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 33, Ed. 1 Monday, November 20, 1978 (open access)

The 4-County News Bulletin (Castroville, Tex.), Vol. 20, No. 33, Ed. 1 Monday, November 20, 1978

Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date: November 20, 1978
Creator: Schott, Bobbie
Object Type: Newspaper
System: The Portal to Texas History
5" Separator for Steering Engine Steam

5" Separator for Steering Engine Steam

Blueprint depicting technical details of Battleship Texas.
Date: May 20, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
9/11 Commission Recommendations: Joint Committee on Atomic Energy - A Model for Congressional Oversight? (open access)

9/11 Commission Recommendations: Joint Committee on Atomic Energy - A Model for Congressional Oversight?

This report focuses on that portion of the 9/11 Commission recommendation that urges Congress to consider the model of the Joint Committee on Atomic Energy (JCAE). It provides an outline of the history, structure, and powers of the JCAE and analyzes a number of issues that might be considered by policymakers as they weigh the suitability of the JCAE as a possible model when crafting congressional oversight mechanisms for intelligence.
Date: August 20, 2004
Creator: Davis, Christopher M.
Object Type: Report
System: The UNT Digital Library
14 1/2" Heavy Pressure Valve with Operating Gear, (Engineroom Main Steam Stop Gear)

14 1/2" Heavy Pressure Valve with Operating Gear, (Engineroom Main Steam Stop Gear)

Blueprint depicting technical details of Battleship Texas.
Date: January 20, 1913
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
100 Area and 300 Area Component of the River Corridor Baseline Risk Assessment Spring 2006 Data Compilation (open access)

100 Area and 300 Area Component of the River Corridor Baseline Risk Assessment Spring 2006 Data Compilation

The purpose of this report is to describe the sampling approaches, modifications made to the 100 Area and 300 Area component of the RCBRA Sampling and Analysis Plan, summarize validation efforts, and provide sample identification numbers.
Date: November 20, 2006
Creator: Queen, J. M. & Weiss, S. G.
Object Type: Report
System: The UNT Digital Library
100 Areas technical activities report: Physics, April 1947 (open access)

100 Areas technical activities report: Physics, April 1947

This monthly report details Physics Department 100 Area technical activities for the month of April 1947.
Date: May 20, 1947
Creator: Gast, P. F.
Object Type: Report
System: The UNT Digital Library
100-C water plant (open access)

100-C water plant

System curves for each portion of the C Area Water Plant were obtained from referenced work and are presented in figures. Field test data, corroborating the calculated curves, are presented as singular points on the same graphs. Present maxima capacity of the C Area Filter Plant was 121,000 gpm with 118,000 gpm available for use as primary reactor coolant. Modifications to the filter effluent piping would increase this available flow to about 180,000 gpm. Of the 118,000 gpm available for C Reactor use, 10,000 to 12,000 gpm was demanded by B Area through the 183 BC intertie. The maximum flow that the intertie line could handle, without reducing the filter capacity of the C Area filters, is about 21,000 gpm.
Date: February 20, 1961
Creator: Agar, J. D.
Object Type: Report
System: The UNT Digital Library
100-D Area technical baseline report (open access)

100-D Area technical baseline report

This document is prepared in support of the 100 Area Environmental Restoration activity at the US Department of Energy`s Hanford Site near Richland, Washington. It provides a technical baseline of waste sites located at the 100-D Area. The report is based on an environmental investigation undertaken by the Westinghouse Hanford Company (WHC) History Office in support of the Environmental Restoration Engineering Function and on review and evaluation of numerous Hanford Site current and historical reports, drawings, and photographs, supplemented by site inspections and employee interviews. No intrusive field investigation or sampling was conducted. All Hanford coordinate locations are approximate locations taken from several different maps and drawings of the 100-D Area. Every effort was made to derive coordinate locations for the center of each facility or waste site, except where noted, using standard measuring devices. Units of measure are shown as they appear in reference documents. The 100-D Area is made up of three operable units: 100-DR-1, 100-DR-2, and 100-DR-3. All three are addressed in this report. These operable units include liquid and solid waste disposal sites in the vicinity of, and related to, the 100-D and 100-DR Reactors. A fourth operable unit, 100-HR-3, is concerned with groundwater and is …
Date: August 20, 1993
Creator: Carpenter, R. W.
Object Type: Report
System: The UNT Digital Library