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36,499 Matching Results
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300-MHz optical discriminator-counter
The prediction of future CO/sub 2/ content in the atmosphere is not completely credible because the oceanographers and terrestrial ecologists do not agree on the global CO/sub 2/ balance. Very precise measurements of O/sub 2//N/sub 2/ ratio using Raman scattering over a few years' period could provide important information and lead to the explanation of the disparity in the atmospheric CO/sub 2/ balance. An optical discriminator-counter has been developed to count closely spaced optical events in the few photon level. Simulated optical events as close as 2.5 ns apart had been positively detected by using selected photomultipliers and optimized discriminators. Testing of the optical discriminator-counter was done by using an electrical pulse pair spaced 3 ns apart and also by a similar optical pulse pair generated by fast light-emitting diode. The photomultiplier is capable of counting an average single photoelectron pulse frequency of 50 MHz and has a sensitive detecting area of 50 mm in diameter. The discriminator performance is discussed.
Date:
July 1, 1981
Creator:
Turko, B. & Lo, C.C.
Object Type:
Article
System:
The UNT Digital Library
303-K Storage Facility report on FY98 closure activities
This report summarizes and evaluates the decontamination activities, sampling activities, and sample analysis performed in support of the closure of the 303-K Storage Facility. The evaluation is based on the validated data included in the data validation package (98-EAP-346) for the 303-K Storage Facility. The results of this evaluation will be used for assessing contamination for the purpose of closing the 303-K Storage Facility as described in the 303-K Storage Facility Closure Plan, DOE/RL-90-04. The closure strategy for the 303-K Storage Facility is to decontaminate the interior of the north half of the 303-K Building to remove known or suspected dangerous waste contamination, to sample the interior concrete and exterior soils for the constituents of concern, and then to perform data analysis, with an evaluation to determine if the closure activities and data meet the closure criteria. The closure criteria for the 303-K Storage Facility is that the concentrations of constituents of concern are not present above the cleanup levels. Based on the evaluation of the decontamination activities, sampling activities, and sample data, determination has been made that the soils at the 303-K Storage Facility meet the cleanup performance standards (WMH 1997) and can be clean closed. The evaluation determined …
Date:
July 17, 1998
Creator:
Adler, J. G.
Object Type:
Report
System:
The UNT Digital Library
303-K Storage facility sampling and analysis plan
This document describes the cleanup, sampling, and analysis activities associated with the closure of the 303-K Storage Facility under the Washington Administrative Code (WAC) 173-303-610, ``Dangerous Waste Regulations.`` this document is a supplement to the 303-K Storage Facility Closure Plan (DOE-RL 1995a) (Closure Plan). The objective of these activities is to support clean closure of the 303 K Storage Facility. This document defines the information and activities needed to meet this objective, including: constituents of concern, cleanup performance standards, cleanup activities, sampling locations and methods, field screening locations and methods, field quality control requirements, laboratory analytical methods, and data validation methodology. This document supersedes the Closure Plan if the two conflict
Date:
July 1, 1997
Creator:
Adler, J. G.
Object Type:
Report
System:
The UNT Digital Library
320 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Community Correspondence - 320 Individual Letters from concerned citizens regarding the closing of the Portsmouth Naval Shipyard
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
324 Building liquid waste handling and removal system project plan
This report evaluates the modification options for handling radiological liquid waste generated during decontamination and cleanout of the 324 Building. Recent discussions indicate that the Hanford site railroad system will be closed by the end of FY 1998 necessitating the need for an alternate transfer method. The issue of handling of Radioactive Liquid Waste (RLW) from the 324 Building (assuming the 340 Facility is not available to accept the RLW) has been examined in at least two earlier engineering studies (Parsons 1997a and Hobart 1997). Each study identified a similar preferred alternative that included modifying the 324 Building RLWS to allow load-out of wastewater to a truck tanker, while making maximum use of existing piping, tanks, instrumentation, controls and other features to minimize costs and physical changes to the building. This alternative is accepted as the basis for further discussion presented in this study. The goal of this engineering study is to verify the path forward presented in the previous studies and assure that the selected alternative satisfies the 324 Building deactivation goals and objectives as currently described in the project management plan. This study will also evaluate options available to implement the preferred alternative and select the preferred option …
Date:
July 29, 1998
Creator:
Ham, J.E.
Object Type:
Report
System:
The UNT Digital Library
324 Facility B-cell quality process plan
B-Cell is currently being cleaned out (i.e., removal of equipment, fixtures and residual radioactive materials) and deactivated. TPA Milestone M-89-02 dictates that all mixed waste and equipment be removed from B-Cell by 5/31/99. The following sections describe the major activities that remain for completion of the TPA milestone. These include: Size Reduce Tank 119 and Miscellaneous Equipment; Load and Ship Low-Level Waste; Remove and Size Reduce the 1B Rack; Collect Dispersible Material from Cell Floor; Remove and Size Reduce the 2A Rack; Size Reduce the 1A Rack; Load and Ship Mixed Waste to PUREX Tunnels; and Move Spent Fuel to A-Cell;
Date:
July 29, 1998
Creator:
Carlson, J.L.
Object Type:
Report
System:
The UNT Digital Library
350 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Community Correspondence - 350 Individual Letters from concerned citizens regarding the closing of the Cannon AFB
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
386 form letters sent by concerned citizens for the BRAC Commission
Community Correspondence - 386 form letters sent by concerned citizens from surrounding communities near Niagara Falls for the BRAC Commission regarding Niagara Falls International Airport Air Guard Station.
Date:
July 15, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
397 form letters sent by concerned citizens for the BRAC Commission
Community Correspondence - 397 form letters sent by concerned citizens from surrounding communities near Niagara Falls for the BRAC Commission regarding Niagara Falls International Airport Air Guard Station.
Date:
July 15, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
401(k) Plans and Retirement Savings: Issues for Congress
Over the past 25 years, defined contribution (DC) plans - including 401(k) plans - have become the most prevalent form of employer-sponsored retirement plan in the United States. This report describes seven major policy issues with respect to defined contribution plans: 1) access to employer-sponsored retirement plans; 2) participation in employer-sponsored plans; 3) contribution rates; 4) investment choices; 5) fee disclosure; 6) leakage from retirement savings; and 7) converting retirement savings into income.
Date:
July 14, 2009
Creator:
Purcell, Patrick & Topoleski, John J.
Object Type:
Report
System:
The UNT Digital Library
405 letters to the Commission from residents in support of Cannon AFB
Community Correspondence – Letters from concerned citizens in support of Cannon AFB.
Date:
July 1, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
450/sup 0/F step transient thermal analysis of the LOFT pressurizer surge and spray line piping
The LOFT pressurizer spray and surge line piping was analyzed for a 450/sup 0/F step change in fluid temperature. This transient was chosen to conservatively represent several pressurizer operating transients that had not previously been analyzed. These include temperature transients resulting from a 300/sup 0/F ..delta..T between pressurizer temperature and cold leg temperature, injection of a cooled (70/sup 0/F) slug of stagnant fluid into the hot (540/sup 0/F) spray line piping, and inflow of 100/sup 0/F primary coolant system water into the hot (480/sup 0/F) surge line piping.
Date:
July 7, 1977
Creator:
Tolan, B.J.
Object Type:
Report
System:
The UNT Digital Library
472 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 472 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
475 form letters sent to the BRAC Commission
Community Correspondence - 475 form letters sent by concerned citizens from surrounding communities near Niagara Falls for the BRAC Commission regarding Niagara Falls International Airport Air Guard Station.
Date:
July 15, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
481 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 481 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Date:
July 26, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
489 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 489 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
493 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 493 letters from citizens upset by the recommendation to close Niagara Falls Air Force Reserve and Guard Base
Date:
July 29, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
500 MW demonstration of advanced wall-fired combustion techniques for the reduction of nitrogen oxide (NOx) emissions from coal-fired boilers. Public design report (preliminary and final)
This Public Design Report presents the design criteria of a DOE Innovative Clean Coal Technology (ICCT) project demonstrating advanced wall-fired combustion techniques for the reduction of NO{sub x} emissions from coal-fired boilers. The project is being conducted at Georgia Power Company`s Plant Hammond Unit 4 (500 MW) near Rome, Georgia. The technologies being demonstrated at this site include Foster Wheeler Energy Corporation`s advanced overfire air system and Controlled Flow/Split Flame low NO{sub x} burner. This report provides documentation on the design criteria used in the performance of this project as it pertains to the scope involved with the low NO{sub x} burners, advanced overfire systems, and digital control system.
Date:
July 1, 1996
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
500 MW X-Band RF System of a 0.25 GeV Electron LINAC for Advanced Compton Scattering Source Application
A Mono-Energetic Gamma-Ray (MEGa-Ray) Compton scattering light source is being developed at LLNL in collaboration with the SLAC National Accelerator Laboratory. The electron beam for the Compton scattering interaction will be generated by a X-band RF gun and a X-band LINAC at the frequency of 11.424 GHz. High power RF in excess of 500 MW is needed to accelerate the electrons to energy of 250 MeV or greater for the interaction. Two high power klystron amplifiers, each capable of generating 50 MW, 1.5 msec pulses, will be the main high power RF sources for the system. These klystrons will be powered by state of the art solid-state high voltage modulators. A RF pulse compressor, similar to the SLED II pulse compressor, will compress the klystron output pulse with a power gain factor of five. For compactness consideration, we are looking at a folded waveguide setup. This will give us 500 MW at output of the compressor. The compressed pulse will then be distributed to the RF gun and to six traveling wave accelerator sections. Phase and amplitude control are located at the RF gun input and additional control points along the LINAC to allow for parameter control during operation. This …
Date:
July 3, 2012
Creator:
Chu, Tak Sum; Anderson, Scott; Barty, Christopher; Gibson, David; Hartemann, Fred; Marsh, Roark et al.
Object Type:
Article
System:
The UNT Digital Library
510 form letters sent by concerned citizens for the BRAC Commission
Community Correspondence - 510 form letters sent by concerned citizens from surrounding communities near Niagara Falls for the BRAC Commission regarding Niagara Falls International Airport Air Guard Station.
Date:
July 15, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
525 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 525 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Date:
July 26, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
527 Organizations and Campaign Activity: Timing of Reporting Requirements under Tax and Campaign Finance Laws
This report compares the timing of election activity reporting requirements under the Internal Revenue Code (IRC) and Federal Election Campaign Act (FECA), and discusses H.R. 1204, which would amend the timing of the IRC’s reporting requirements.
Date:
July 25, 2008
Creator:
Lunder, Erika & Whitaker, L. Paige
Object Type:
Report
System:
The UNT Digital Library
549 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 549 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Date:
July 26, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
550 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Community Correspondence - 550 Form Letters from concerned citizens supporting Niagara Falls Air Force Reserve and Guard Base
Date:
July 26, 2005
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library