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13,581 Matching Results
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Large-scale cryopumping for controlled fusion
Vacuum pumping by freezing out or otherwise immobilizing the pumped gas is an old concept. In several plasma physics experiments for controlled fusion research, cryopumping has been used to provide clean, ultrahigh vacua. Present day fusion research devices, which rely almost universally upon neutral beams for heating, are high gas throughput systems, the pumping of which is best accomplished by cryopumping in the high mass-flow, moderate-to-high vacuum regime. Cryopumping systems have been developed for neutral beam injection systems on several fusion experiments (HVTS, TFTR) and are being developed for the overall pumping of a large, high-throughput mirror containment experiment (MFTF). In operation, these large cryopumps will require periodic defrosting, some schemes for which are discussed, along with other operational considerations. The development of cryopumps for fusion reactors is begun with the TFTR and MFTF systems. Likely paths for necessary further development for power-producing reactors are also discussed.
Date:
July 25, 1977
Creator:
Pittenger, L. C.
Object Type:
Article
System:
The UNT Digital Library
Foreign Military Sales: Improved Navy Controls Could Prevent Unauthorized Shipments of Classified and Controlled Spare Parts to Foreign Countries
A letter report issued by the General Accounting Office with an abstract that begins "From 1993 through 2002, the Department of Defense (DOD) delivered over $150 billion in services and defense articles, including classified and controlled items, to foreign countries through foreign military sales programs administered by the military. Foreign countries may request items using blanket orders, which are for a specific dollar value and are used to simplify supply actions on certain types of items. GAO was asked to review whether the Navy's key internal controls restricted blanket orders for (1) classified spare parts and (2) controlled items sold to foreign countries. Also, GAO was asked to determine if periodic tests were conducted to ensure that the Navy's system is working as intended."
Date:
June 25, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Mexico's Drug Cartels
This report details Mexican Cartels, their ties to gangs, use of financial corruption, and their cells within the United States of America. As well as, the policies that are used to eradicate drug trafficking and violence. Updated February 25, 2008.
Date:
February 25, 2008
Creator:
Cook, Colleen W.
Object Type:
Report
System:
The UNT Digital Library
Interim safety equipment list for 241-C-106 waste retrieval, project W-320
The purpose of this supporting document is to provide safety classifications for systems, structures, and components of the Tank 241-C-106 Waste Retrieval Sluicing System (WRSS) and to document the methodology used to develop these safety classifications. The WRSS requires two transfer lines, one to carry sluiced waste slurry to tank 241-AY-102 and the other to return supernatant to tank 241-C-106; pumps in each tank; sluicers to direct the supernatant stream inside tank 241-C-106; a slurry distributor in tank 241-AY-102; heating, ventilation, and air conditioning for tank 241-C-106; and instrumentation and control devices.
Date:
January 25, 1996
Creator:
Conner, J. C.
Object Type:
Report
System:
The UNT Digital Library
Drug Control: International Policy and Approaches
This report gives an overview of international policy and Approaches related to Drug Control.
Date:
July 25, 2005
Creator:
Perl, Raphael
Object Type:
Report
System:
The UNT Digital Library
Aviation Security: TSA's Change to Its Prohibited Items List Has Not Resulted in Any Reported Security Incidents, but the Impact of the Change on Screening Operations Is Inconclusive
Correspondence issued by the Government Accountability Office with an abstract that begins "The alleged August 2006 terrorist plot to detonate liquid explosives onboard multiple commercial aircraft bound for the United States from the United Kingdom has highlighted both the continued importance of securing the civil aviation system and the potential that improvised explosive devices (IED) may be smuggled onboard passenger aircraft. The Transportation Security Administration (TSA) has primary responsibility for ensuring the security of civil aviation, which includes the safety of passengers and flight crew. One measure TSA uses to protect the aviation system is prohibiting individuals from carrying items that it determines to be a threat to the aircraft and its passengers into an airport sterile area or onboard an aircraft either in their carry-on bag or on their person. To implement this measure, TSA maintains a prohibited items list that informs both the Transportation Security Officers (TSO) who conduct passenger screening and the traveling public of items that will not be allowed into an airport sterile area or onboard an aircraft. In December 2005, TSA revised its prohibited items list to allow passengers to carry: (1) metal scissors with pointed tips and a blade 4 inches or less …
Date:
April 25, 2007
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Fusion power: the transition from fundamental science to fusion reactor engineering
The historical development of fusion research is outlined. The basics of fusion power along with fuel cost and advantages of fusion are discussed. Some quantitative requirements for fusion power are described. (MOW)
Date:
July 25, 1975
Creator:
Post, Richard F.
Object Type:
Article
System:
The UNT Digital Library
DETERMINATION OF IMPORTANCE EVALUATION FOR THE SURFACE EXPLORATORY STUDIES FACILITY
This DIE applies to the surface facilities component of the Yucca Mountain Site Characterization Project (W) ESF. The ESF complex-including surface and subsurface accommodations--encompasses an area that is approximately six miles wide and nine miles long (approximately 30,000 acres total) (United States Department of Energy [DOE] 1997, p. 9.04). It is located on federally withdrawn lands, near the southwest border of the Nevada Test Site (NTS) in southern Nevada (DOE 1997, p. 9.04). Site characterization activities are conducted within the subsurface ESF to obtain the information necessary to determine whether the Yucca Mountain Site is suitable as a geologic repository for spent nuclear fuel and high-level radioactive waste. Most ESF surface facilities are located within the Conceptual Controlled Area Boundary (CCAB) (DOE 1997, p. 9.04), with the exception of the southeastern most portions of the H-Road and the Water Supply System. Various SBT activities are also conducted throughout the Yucca Mountain region as a part of the overall site-characterization effort. In general, the DIE for SBT Activities (Civilian Radioactive Waste Management System [CRWMS] Management and Operating Contractor [M&O] 1998a) evaluates activities associated with SBT. Potential test-to-test interference and waste isolation impacts associated with SBT activities are also evaluated in CRWMS …
Date:
July 25, 2000
Creator:
Byrne, C.J.
Object Type:
Report
System:
The UNT Digital Library
Costs of magnets for large fusion power reactors: Phase I, cost of superconductors for dc magnets
None
Date:
February 25, 1972
Creator:
Powell, J.R.
Object Type:
Report
System:
The UNT Digital Library
2010 Soil Characterization Report for the Area 11 Explosive Ordnance Disposal Unit, Nevada Test Site
This soil characterization report summarizes sampling activities and analytical results, provides copies of laboratory data reports, and meets the requirements of Section IV.G.2 of the Permit (NEV HW0021, November 2005) and Sections P.3.d.7.b and P.3.n of the Permit Application (DOE/NV--1053-VOL 4, May 2005).
Date:
February 25, 2010
Creator:
National Security Technologies, LLC
Object Type:
Report
System:
The UNT Digital Library
Marijuana: Medical and Retail -- An Abbreviated View of Selected Legal Issues
This report discusses the federal law regarding marijuana that is classified as a Schedule I Controlled Substance. The federal Controlled Substances Act (CSA) outlaws the possession, cultivation, or distribution of marijuana except for authorized research.
Date:
March 25, 2014
Creator:
Garvey, Todd & Doyle, Charles
Object Type:
Report
System:
The UNT Digital Library
The Enhanced Plan for Features, Events, and Processes (FEPS) at Yucca Mountain
A performance assessment is required to demonstrate compliance with the post-closure performance objectives for the Yucca Mountain Project (YMP), as stated in 10 CFR Part 63.1 13 (66 FR 55732, p. 55807). A performance assessment is defined in 10 CFR 63.2 (66 FR 55732, p. 55794) as an analysis that: (1) identifies the features, events, and processes (FEPs) that might affect the potential geologic repository; (2) examines the effects of those FEPs upon the performance of the potential geologic repository; and (3) estimates the expected dose incurred by a specified reasonably maximally exposed individual as a result of releases caused by significant FEPs. The performance assessment must also provide the technical basis for inclusion or exclusion of specific FEPs in the performance assessment as stated in 10 CFR 63.114 (66 FR 55732, p. 55807). An initial approach for FEP development, in support of the Total System Performance Assessment for the Site Recommendation (TSPA-SR) (CRWMS M&O 2000e), was documented in Freeze et al. (2001). The development of a comprehensive list of FEPs potentially relevant to the post-closure performance of the potential Yucca Mountain repository is an ongoing, iterative process based on site-specific information, design, and regulations. Although comprehensiveness of the FEPs …
Date:
March 25, 2002
Creator:
Freeze, G.
Object Type:
Report
System:
The UNT Digital Library
TOXECON RETROFIT FOR MERCURY AND MULTI-POLLUTANT CONTROL ON THREE 90-MW COAL-FIRED BOILERS
With the Nation's coal-burning utilities facing tighter controls on mercury pollutants, the U.S. Department of Energy is supporting projects that could offer power plant operators better ways to reduce these emissions at much lower costs. Sorbent injection technology represents one of the simplest and most mature approaches to controlling mercury emissions from coal-fired boilers. It involves injecting a solid material such as powdered activated carbon into the flue gas. The gas-phase mercury in the flue gas contacts the sorbent and attaches to its surface. The sorbent with the mercury attached is then collected by a particulate control device along with the other solid material, primarily fly ash. We Energies has over 3,200 MW of coal-fired generating capacity and supports an integrated multi-emission control strategy for SO{sub 2}, NO{sub x}, and mercury emissions while maintaining a varied fuel mix for electric supply. The primary goal of this project is to reduce mercury emissions from three 90-MW units that burn Powder River Basin coal at the We Energies Presque Isle Power Plant. Additional goals are to reduce nitrogen oxide (NO{sub x}), sulfur dioxide (SO{sub 2}), and particulate matter (PM) emissions, allow for reuse and sale of fly ash, demonstrate a reliable mercury …
Date:
January 25, 2006
Creator:
Johnson, Richard E.
Object Type:
Report
System:
The UNT Digital Library
Spectrographic Determination of Impurities in Hafnium
A spectrographic method using d-c arc excitation in a controlled atmosphere was developed to analyze for seven impurity elements in radioactive hafnium samples. Analysis requires as little as 35 mg of hafnium oxide. (auth)
Date:
August 25, 1961
Creator:
Ginther, B. E. & Wheeler, G. V.
Object Type:
Report
System:
The UNT Digital Library
Using a microprocessor knee (C-Leg) with appropriate foot transitioned individuals with dysvascular transfemoral amputations to higher performance levels: a longitudinal randomized clinical trial
Article evaluating whether advanced prostheses can provide better safety and performance capabilities to maintain and improve quality of life in individuals who are predominantly designated MFCL level K2. This study used a 13 month longitudinal clinical trial to determine the benefits of using a C-Leg and 1M10 foot in individuals at K2 level with transfemoral amputation due to vascular disease.
Date:
May 25, 2021
Creator:
Jayaraman, Chandrasekaran; Mummidisetty, Chaithanya K.; Albert, Mark; Lipschutz, Robert; Hoppe-Ludwig, Shenan; Mathur, Gayatri et al.
Object Type:
Article
System:
The UNT Digital Library
The Gonzales Inquirer. (Gonzales, Tex.), Vol. 1, No. 43, Ed. 1 Saturday, March 25, 1854
Weekly newspaper from Gonzales, Texas that includes local, state and national news along with advertising.
Date:
March 25, 1854
Creator:
Smith, S. W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Gonzales Inquirer. (Gonzales, Tex.), Vol. 1, No. 4, Ed. 1 Saturday, June 25, 1853
Weekly newspaper from Gonzales, Texas that includes local, state and national news along with advertising.
Date:
June 25, 1853
Creator:
Smith, S. W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Gonzales Inquirer. (Gonzales, Tex.), Vol. 1, No. 39, Ed. 1 Saturday, February 25, 1854
Weekly newspaper from Gonzales, Texas that includes local, state and national news along with advertising.
Date:
February 25, 1854
Creator:
Smith, S. W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Jasper News-Boy (Jasper, Tex.), Vol. 8, No. 8, Ed. 1 Wednesday, June 25, 1873
Weekly newspaper from Jasper, Texas that includes local, state and national news along with some advertising.
Date:
June 25, 1873
Creator:
Carraway, T. J.
Object Type:
Newspaper
System:
The Portal to Texas History
Plutonium Immobilization Can Loading Preliminary Specifications
This report discusses the Plutonium Immobilization can loading preliminary equipment specifications and includes a process block diagram, process description, equipment list, preliminary equipment specifications, plan and elevation sketches, and some commercial catalogs. This report identifies loading pucks into cans and backfilling cans with helium as the top priority can loading development areas.
Date:
November 25, 1998
Creator:
Kriikku, E.
Object Type:
Report
System:
The UNT Digital Library
Project W-320, WRSS PCP: Procedure implementation verification
This document provides verification that the methodology for the safe retrieval of high-heat waste from Tank 241-C-106 as specified in the WRSS Process Control Plan HNF-SD-PCP-013, Revision 1, has been adequately implemented into the Tank Waste Remediation System (TWRS) operational procedures. Tank 241-C-106 is listed on the High Heat Load Watch List.
Date:
July 25, 1998
Creator:
Bailey, J. W.
Object Type:
Report
System:
The UNT Digital Library
Project W-211 Initial Tank Retrieval Systems (ITRS) Description of Operations for 241-AZ-102
The primary purpose of the Initial Tank Retrieval Systems (ITRS) is to provide systems for retrieval of radioactive wastes stored in underground double-shell tanks (DSTs) for transfer to alternate storage, evaporation, pretreatment or treatment, while concurrently reducing risks associated with safety watch list and other DSTs. This Description of Operation (DOO) defines the control philosophy for the waste retrieval system for Tank 241-AZ-102 (AZ-102). This DOO provides a basis for the detailed design of the Project W-211 Retrieval Control System (RCS) for AZ-102 and also establishes test criteria for the RCS.
Date:
February 25, 2000
Creator:
BRIGGS, S.R.
Object Type:
Report
System:
The UNT Digital Library
LANMAS Gap Analysis Report
In July, 2000, the Controlled Materials Accountability and Tracking System (COMATS) Team, with the assistance of a representative of the Local Area Network Materials Accountability System (LANMAS) development team from Savannah River, performed an evaluation to enumerate and qualify differences between the current LANMAS functionality and LLNL requirements as implemented by COMATS. The differences found range from minor to serious deficiencies of LANMAS in relation to current LLNL MC&A practice. Therefore, we recommend a gradual integration of LANMAS into a hybrid system which uses LANMAS to satisfy DOE/NNSA MC&A and reporting requirements and uses COMATS to satisfy LLNL-specific MC&A and operational requirements.
Date:
August 25, 2000
Creator:
Parrish, C.; Yee, W.; Okuda, V.; Watson, B. & Storch, N
Object Type:
Report
System:
The UNT Digital Library
Building a dedicated information barrier system for warhead and sensitive item verification
This paper documents the development of a dedicated information barrier system for warhead and sensitive item verification. The system the authors describe includes software and hardware information barriers used in conjunction with suitable procedures (or protocols) to achieve a high quality verification while minimizing intrusiveness and preventing transfer of sensitive data to inspectors. The system they describe has been referred to as CIVET--Controlled Intrusiveness Verification Technology and has been implemented to verify warheads and warhead components during various exercises and demonstrations under the auspices of the Department of Energy (DOE) and the Department of Defense (DOD).
Date:
July 25, 1999
Creator:
ZUHOSKI,P.B.; INDUSI,J.P. & VANIER,P.E.
Object Type:
Article
System:
The UNT Digital Library