UNT Libraries Government Documents Department - 229 Matching Results

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open access

100% foundry compatible packaging and full wafer release and die separation technique for surface micromachined devices

Description: A completely foundry compatible chip-scale package for surface micromachines has been successfully demonstrated. A pyrex (Corning 7740) glass cover is placed over the released surface micromachined die and anodically bonded to a planarized polysilicon bonding ring. Electrical feedthroughs for the surface micromachine pass underneath the polysilicon sealing ring. The package has been found to be hermetic with a leak rate of less than 5 x 10{sup {minus}8} atm cm{sup {minus}3}/s. This technology h… more
Date: April 6, 2000
Creator: Oliver, Andrew D. & Matzke, Carolyn M.
Item Type: Refine your search to only Article
open access

AZ-101 Mixer Pump Test MT Fury Suspended Solids Profiler Application and Testing

Description: Describes the radiation testing and calibration of the AZ-101 tank suspended solids profiler unit mounted on 6 tank riser 24A. The Mt. Fury Suspended Solids Profiler (SSP) is a microprocessor-controlled instrument that measures the turbidity of solid-liquid suspensions and sludges. The profiler is used commercially for the monitoring and control of clarifiers and thickeners in waste treatment, mining, pulp and paper, and other industrial processing facilities. The instrument includes a three in… more
Date: January 6, 2000
Creator: MACLEAN, G.T.
Item Type: Refine your search to only Report
open access

Airborne Intelligence, Surveillance & Reconnaissance (ISR): The U-2 Aircraft and Global Hawk UAV Programs

Description: Among airborne intelligence, surveillance, and reconaissance (ISR) platforms, the U-2 Dragon Lady and the RQ-4A Global Hawk are especially valuable. This report discusses how best to use existing and planned manned and unmanned ISR aircraft to most effectively satisfy the Department of Defense's (Dod) requirements for timely and accurate information on enemy forces.
Date: November 6, 2000
Creator: Best, Richard A., Jr. & Bolkcom, Christopher
Item Type: Refine your search to only Report
open access

ALARA Analysis for Shippingport Pressurized Water Reactor Core 2 Fuel Storage in the Canister Storage Building (CSB)

Description: The addition of Shippingport Pressurized Water Reactor (PWR) Core 2 Blanket Fuel Assembly storage in the Canister Storage Building (CSB) will increase the total cumulative CSB personnel exposure from receipt and handling activities. The loaded Shippingport Spent Fuel Canisters (SSFCs) used for the Shippingport fuel have a higher external dose rate. Assuming an MCO handling rate of 170 per year (K East and K West concurrent operation), 24-hr CSB operation, and nominal SSFC loading, all work crew… more
Date: April 6, 2000
Creator: LEWIS, M.E.
Item Type: Refine your search to only Report
open access

Algebraic coarsening methods for linear and nonlinear PDE and systems

Description: In [l] Brandt describes a general approach for algebraic coarsening. Given fine-grid equations and a prescribed relaxation method, an approach is presented for defining both the coarse-grid variables and the coarse-grid equations corresponding to these variables. Although, these two tasks are not necessarily related (and, indeed, are often performed independently and with distinct techniques) in the approaches of [1] both revolve around the same underlying observation. To determine whether a gi… more
Date: November 6, 2000
Creator: McWilliams, J C
Item Type: Refine your search to only Report
open access

Analysis of the interphase of a polyamide bonded to chromic acid anodized Ti-6AL-4V

Description: Structural adhesive joints, when tested as made, typically fail cohesively through the centerline of the adhesive. However, in any study of adhesive joint durability, failure near the adhesive/substrate interface becomes an important consideration. In the current study, an interfacially debonding adhesive test, the notched coating adhesion (NCA) test, was applied to LaRC(trademark) PETI-5 adhesive bonded to chronic acid anodized (CAA) Ti-6Al-4V. Post-failure analysis of the interphase region in… more
Date: January 6, 2000
Creator: Guinta, R.K. & Kander, R.G.
Item Type: Refine your search to only Article
open access

Analysis of the Magnetic Field Measured by a Rotating Hall Probe in a Solenoid to Locate its Magnetic Axis

Description: We have analyzed the motion of a Hall probe, which is rotated about an axis that is arbitrarily displaced and oriented with respect to the magnetic axis of a solenoid. We outline how the magnetic field measured by the rotating Hall probe can be calculated. We show how to compare theoretical results with actual measurements, to determine the displacement and orientation of the axis of rotation of the probe from the magnetic axis. If the center of rotation of the probe is known by surveying, the … more
Date: November 6, 2000
Creator: Kponou, A.; Pikin, A.; Beebe, E. & Alessi, J.
Item Type: Refine your search to only Article
open access

Anti-B-B Mixing Constrains Topcolor-Assisted Technicolor

Description: We argue that extended technicolor augmented with topcolor requires that all mixing between the third and the first two quark generations resides in the mixing matrix of left-handed down quarks. Then, the anti-B_d--B_d mixing that occurs in topcolor models constrains the coloron and Z' boson masses to be greater than about 5 TeV. This implies fine tuning of the topcolor couplings to better than 1percent.
Date: December 6, 2000
Creator: Burdman, Gustavo; Lane, Kenneth & Rador, Tonguc
Item Type: Refine your search to only Article
open access

Anticipated Radiological Dose to Worker for Plutonium Stabilization and Handling at PFP Project W-460

Description: This report provides estimates of the expected whole body and extremity radiological dose, expressed as dose equivalent (DE), to workers conducting planned plutonium (Pu) stabilization processes at the Hanford Site Plutonium Finishing Plant (PFP). The report is based on a time and motion dose study commissioned for Project W-460, Plutonium Stabilization and Handling, to provide personnel exposure estimates for construction work in the PFP storage vault area plus operation of stabilization and p… more
Date: March 6, 2000
Creator: WEISS, E.V.
Item Type: Refine your search to only Report
open access

Application of natural radionuclides for determination of tropospheric ozone and aerosol transport.

Description: Natural radionuclides have been proposed for use in assessing the transport of ozone and aerosols in the troposphere. For example, {sup 7}Be is known to be produced in the upper troposphere and lower stratosphere by interactions with cosmogenic particles. Beryllium-7 has a 53.28-day half-life and is a gamma emitter that attaches itself to fine particles in the atmosphere once it is formed. Indeed, in tropospheric aerosol samples TBe is typically found in association with aerosol particles that … more
Date: December 6, 2000
Creator: Gaffney, J. S.; Marley, N. A.; Drayton, P. J. & Orlandini, K. A.
Item Type: Refine your search to only Article
open access

Assessment of Cable Aging Using Condition Monitoring Techniques

Description: Electric cables in nuclear power plants suffer degradation during service as a result of the thermal and radiation environments in which they are installed. Instrumentation and control cables are one type of cable that provide an important role in reactor safety. Should the polymeric cable insulation material become embrittled and cracked during service, or during a loss-of-coolant-accident (LOCA) and when steam and high radiation conditions are anticipated, failure could occur and prevent the … more
Date: April 6, 2000
Creator: Grove, E.; Lofaro, R.; Soo, P.; Villaran, M. & Hsu, F.
Item Type: Refine your search to only Article
open access

Authorization Basis Safety Classification of Transfer Bay Bridge Crane at the 105-K Basins

Description: This supporting document provides the bases for the safety classification for the K Basin transfer bay bridge crane and the bases for the Structures, Systems, and Components (SSC) safety classification. A table is presented that delineates the safety significant components. This safety classification is based on a review of the Authorization Basis (AB). This Authorization Basis review was performed regarding AB and design baseline issues. The primary issues are: (1) What is the AB for the safet… more
Date: April 6, 2000
Creator: CHAFFEE, G.A.
Item Type: Refine your search to only Report
open access

Aviation Infrastructure: Feasibility of Using Alternate Means to Satisfy Requirements of Alaska National Airspace System Interfacility Communications System (ANICS) Phase II

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Federal Aviation Administration's (FAA) report to Congress recommending that it award a contract to an alternate contractor for the development of its Alaska National Airspace System Interfacility Communications System, focusing on whether the findings were properly supported. FAA's report compared the alternate contractor's costs to the costs of two other c… more
Date: September 6, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Aviation Security: Vulnerabilities Still Exist in the Aviation Security System

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the security of the nation's air transportation system, focusing on the Federal Aviation Administration's (FAA) efforts to implement and improve security in two key areas: (1) air traffic control computer systems; and (2) airport passenger screening checkpoints."
Date: April 6, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
open access

Bench Scale Saltcake Dissolution Test Report

Description: A potential scenario for retrieving saltcake from single shell tanks is the ''Rainbird{reg_sign} sprinkler'' method. Water is distributed evenly across the surface of the saltcake and allowed to percolate by gravity through the waste. The salt dissolves in the water, forming a saturated solution. The saturated liquid is removed by a saltwell pump situated near the bottom of the tank. By this method, there is never a large inventory of liquid in the tank that could pose a threat of leakage. Ther… more
Date: December 6, 2000
Creator: Bechtold, D. B. & Pacquet, E. A.
Item Type: Refine your search to only Report
open access

Calibration of parallel kinematic devices using sequential determination of kinematic parameters

Description: In PKM Machines, the Cartesian position and orientation of the tool point carried on the platform is obtained from a kinematic model of the particular machine. Accurate positioning of these machines relies on the accurate knowledge of the parameters of the kinematic model unique to the particular machine. The parameters in the kinematic model include the spatial locations of the joint centers on the machine base and moving platform, the initial strut lengths, and the strut displacements. The st… more
Date: April 6, 2000
Creator: JOKIEL JR.,BERNHARD; BIEG,LOTHAR F. & ZIEGERT,JOHN C.
Item Type: Refine your search to only Article
open access

"Cavitation in a Mercury Target"

Description: Recent theoretical work on the formation of bubble nucleation centers by energetic particles leads to some reasonably credible calculations of the maximum negative pressure that might be sustained without bubble formation in the mercury target of the Spallation Neutron Source.
Date: September 6, 2000
Creator: West, C.D.
Item Type: Refine your search to only Report
open access

Central Waste Complex (CWC) Waste Analysis Plan

Description: The purpose of this waste analysis plan (WAP) is to document the waste acceptance process, sampling methodologies, analytical techniques, and overall processes that are undertaken for waste accepted for storage at the Central Waste Complex (CWC), which is located in the 200 West Area of the Hanford Facility, Richland, Washington. Because dangerous waste does not include the source special nuclear and by-product material components of mixed waste, radionuclides are not within the scope of this d… more
Date: January 6, 2000
Creator: ELLEFSON, M.D.
Item Type: Refine your search to only Report
open access

CFTC and SEC: Issues Related to the Shad-Johnson Jurisdictional Accord

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Securities and Exchange Commission (SEC) and the Commodity Futures Trading Commission (CFTC) and the issues the two have in relation to the Shad-Johnson Jurisdictional Accord, focusing on: (1) the extent to which U.S. securities, foreign futures, and over-the-counter (OTC) markets trade stock-based derivatives that are economically similar to the futures pr… more
Date: April 6, 2000
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
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