Powered by Deep Web Technologies
Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Arizona | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Exclusion Determination Davis Dam 230-Kilovolt Switchyards Stage 06 Upgrade (Double Breaker Double Bus) in Mohave County, Arizona CX(s) Applied: B4.11 Date: 06302010...

2

Record of Decision for the Interconnection of the Sutter Power Project With the Western Area Power Administration's Keswick-Elverta/Olinda-Elverta 230-Kilovolt Double-Circuit Transmission Line, June 15, 1999  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

41 41 Federal Register / Vol. 64, No. 114 / Tuesday, June 15, 1999 / Notices DEPARTMENT OF ENERGY Western Area Power Administration Record of Decision for the Interconnection of the Sutter Power Project With the Western Area Power Administration's Keswick-Elverta/ Olinda-Elverta 230-Kilovolt Double- Circuit Transmission Line AGENCY: Western Area Power Administration, DOE. ACTION: Record of decision. SUMMARY: The Western Area Power Administration (Western) prepared this Record of Decision in response to a request submitted to Western for a direct interconnection of Calpine Corporation's (Calpine) proposed Sutter Power Project (SPP) with Western's electric transmission system. In response to this request, Western completed an Interconnection Feasibility Study that determined that

3

Monitoring Switchyard Electricity | Y-12 National Security Complex  

NLE Websites -- All DOE Office Websites (Extended Search)

Monitoring Switchyard ... Monitoring Switchyard Electricity Monitoring electricity coming in through the switchyard to the Y-12 Plant...

4

Optics upgrade for switchyard  

SciTech Connect

An upgrade of the Switchyard optics is proposed. This upgrade extends the P3 (old Main Ring) lattice through enclosure C. The septa for the 3-way Meson Area split is moved from enclosure F1 to enclosure M01. The functionality of the Meson Target Train is preserved. Finally, for the purpose of demonstrating that the resulting split can be transported, a straw-man lattice is proposed for enclosure M02 and beyond.

Kobilarcik, Thomas R.; /Fermilab

2005-08-01T23:59:59.000Z

5

Recovery Act Project Clears Portsmouth Switchyard, Benefits Community  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Project Clears Portsmouth Switchyard, Benefits Project Clears Portsmouth Switchyard, Benefits Community through Recycling Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling American Recovery and Reinvestment Act workers recently completed the demolition of structures in an electrical switchyard used to help power the Portsmouth Site's uranium enrichment processes for defense and commercial uses for nearly five decades. In the $28 million Recovery Act project completed safely and on schedule, workers demolished 160 towers as tall as 120 feet that were used to operate the X-533 Electrical Switchyard. Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling More Documents & Publications Recovery Act Exceeds Major Cleanup Milestone, DOE Complex Now 74 Percent

6

LANSCE Wire Scanner System Prototype: Switchyard Test  

Science Conference Proceedings (OSTI)

On November 19, 2011, the beam diagnostics team of Los Alamos National Laboratory's LANSCE accelerator facility conducted a test of a prototype wire scanner system for future deployment within the accelerator's switchyard area. The primary focus of this test was to demonstrate the wire scanner control system's ability to extend its functionality beyond acquiring lower energy linac beam profile measurements to acquiring data in the switchyard. This study summarizes the features and performance characteristics of the electronic and mechanical implementation of this system with details focusing on the test results.

Sedillo, James D [Los Alamos National Laboratory

2012-04-11T23:59:59.000Z

7

Recovery Act Project Clears Portsmouth Switchyard, Benefits Community  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Recovery Act Project Clears Portsmouth Switchyard, Benefits Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling American Recovery and Reinvestment Act workers recently completed the demolition of structures in an electrical switchyard used to help power the Portsmouth Site's uranium enrichment processes for defense and commercial uses for nearly five decades. In the $28 million Recovery Act project completed safely and on schedule, workers demolished 160 towers as tall as 120 feet that were used to operate the X-533 Electrical Switchyard. Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling More Documents & Publications Microsoft Word - PSRP Updates 6-25-10_v2

8

CX-003193: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3193: Categorical Exclusion Determination 3193: Categorical Exclusion Determination CX-003193: Categorical Exclusion Determination Davis Dam 230-Kilovolt Switchyards Stage 06 Upgrade (Double Breaker Double Bus) in Mohave County, Arizona CX(s) Applied: B4.11 Date: 06/30/2010 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region Western Area Power Administration plans to upgrade the existing Upper and Lower Davis Dam 230-kilovolt switchyards in order to provide additional operational flexibility and reliability to the bulk electric system. Construction activities will take place within the existing switchyard fences in areas previously graded and covered with gravel. Existing gravel access roads will be used to reach the project area. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

9

CX-003193: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

93: Categorical Exclusion Determination 93: Categorical Exclusion Determination CX-003193: Categorical Exclusion Determination Davis Dam 230-Kilovolt Switchyards Stage 06 Upgrade (Double Breaker Double Bus) in Mohave County, Arizona CX(s) Applied: B4.11 Date: 06/30/2010 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region Western Area Power Administration plans to upgrade the existing Upper and Lower Davis Dam 230-kilovolt switchyards in order to provide additional operational flexibility and reliability to the bulk electric system. Construction activities will take place within the existing switchyard fences in areas previously graded and covered with gravel. Existing gravel access roads will be used to reach the project area. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

10

Recovery Act Project Clears Portsmouth Switchyard, Benefits Community through Recycling  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Project Clears Portsmouth Project Clears Portsmouth Switchyard, Benefits Community through Recycling PIKETON, Ohio - American Recovery and Reinvestment Act workers recently completed the demolition of structures in an electrical switchyard used to help power the Portsmouth Site's uranium enrichment processes for defense and commercial uses for nearly five decades. In the $28 million Recovery Act project completed safely and on schedule, workers demolished 160 towers as tall as 120 feet that were used to operate the X-533 Electrical Switchyard. The 20-acre complex was one of two high-voltage switchyards that together provided up to 2,200 megawatts of power - enough to light up New York City at the time the Portsmouth Gaseous Diffu- sion Plant was constructed in the 1950s. The remaining switch-

11

Switchyards Rebuild and Upgrade Project in Mohave County, Arizona  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

. . Categorical Exclusion for the Demolition of a Service Building at Davis Dam Lower 230-kV Switchyard as part of the Overall Switchyards Rebuild and Upgrade Project in Mohave County, Arizona RECORD OF CATEGORICAL EXCLUSION DETERMINATION A. Proposed Action: Western Area Power Administration (Western) plans to demolish a service building located in the Lower 230-kV Switchyard at Davis Dam, because it no longer meets our needs and we do not anticipate finding a use for it in the future. The building is currently vacant and has been for years. We plan to begin the work on April 1 ,2011 and complete it by December 31,2011. The attached map shows the project area location. Aerial photographs show that much of this area is developed. Western owns the land. The legal description is

12

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

13

EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

00: Granby Pumping Plant Switchyard-Windy Gap Substation 00: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO EIS-0400: Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO Summary Western Area Power Administration prepared an EIS, with the U.S. Forest Service, Bureau of Land Management, and Grand County (Colorado) as cooperating agencies, to evaluate the potential environmental impacts of rebuilding a 12-mile, 69-kV electric transmission line in Grand County. The proposed project would rebuild the single-circuit line as a double-circuit transmission line and add a second power transformer. Western identified potentially significant impacts while preparing an EA for this proposal (DOE/EA-1520) and prepared an EIS instead of completing

14

Granby Pumping Plant Switchyard - Windy Gap Substation Transmission Line Rebuild, Grand County, Colorado: Final Environmental Impact Statement Appendices  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PUMPING PLANT SWITCHYARD - WINDY GAP PUMPING PLANT SWITCHYARD - WINDY GAP SUBSTATION TRANSMISSION LINE REBUILD, GRAND COUNTY, COLORADO DOE/EIS-0400 Final Environmental Impact Statement Appendices Grand County, Colorado June 2013 Appendix A EIS Scoping Report GRANBY PUMPING PLANT - WINDY GAP TRANSMISSION LINE REBUILD PROJECT ENVIRONMENTAL IMPACT STATEMENT SCOPING SUMMARY REPORT December 4, 2007

15

Granby Pumping Plant Switchyard - Windy Gap Substation Transmission Line Rebuild, Grand County, Colorado: Final Environmental Impact Statement Executive Summary  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PUMPING PLANT SWITCHYARD - WINDY GAP PUMPING PLANT SWITCHYARD - WINDY GAP SUBSTATION TRANSMISSION LINE REBUILD, GRAND COUNTY, COLORADO DOE/EIS-0400 Final Environmental Impact Statement Executive Summary Grand County, Colorado June 2013 Granby Pumping Plant-Windy Gap Substation Transmission Line Rebuild Project FEIS Executive Summary ES-1 EXECUTIVE SUMMARY Introduction Western Area Power Administration (Western), a power marketing administration within the U.S. Department of Energy (DOE), is proposing to rebuild and upgrade the Granby Pumping Plant Switchyard-Windy Gap Substation transmission line in Grand County, Colorado (Grand County). This Environmental Impact Statement (EIS) analyzes the impacts associated with the proposal to remove approximately 13.6 miles of 69-kilovolt (kV) transmission line, construct approximately

16

CX-010544: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Glen Canyon Switchyard - 230 Kilovolt Wavetrap Removal - TZ9A2 on the Navajo Line CX(s) Applied: B4.11 Date: 06/21/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

17

Environmental Baseline Survey Report for the Title Transfer of the K-792 Switchyard Complex at the East Tennessee Technology Park, Oak Ridge, Tennessee  

SciTech Connect

This environmental baseline survey (EBS) documents the baseline environmental conditions of the U. S. Department of Energy's (DOE's) K-792 Switchyard Complex, which includes the former K-792 Switchyard, the K-79 1-B building, the K-796-A building, and the K-792 Northern Expansion Area located in the northwestern portion of the East Tennessee Technology Park (ETTP). The total area of the property is approximately 19.91 acres. DOE is proposing to transfer the title of this land area and buildings to the Heritage Center, LLC (Heritage Center), a subsidiary corporation of the Community Reuse Organization of East Tennessee (CROET). This report provides supporting information for the transfer of this government-owned facility at ETTP to a non-federal entity. The area proposed for title transfer includes the former K-792 Switchyard, the K-792 Northern Expansion Area, Bldg. K-791-B, Bldg. K-796-A, and the underlying property known as the underlying fee. Located within the K-792 Switchyard footprint but not included in the transfer are Bldg. K-131 0-MP and Bldg. K- 131 0-MQ, two buildings owned by a private company that leases space in the northern portion of the Switchyard. The transfer footprint is bounded by Perimeter Road to the north and west, the parking area for Portal 8 to the south, and primarily the former K-792 Powerhouse Complex and Avenue 'U' North to the east; however, the eastern boundary along the Northern Expansion area has no physical features associated with it. Zone 2 remedial action objectives were developed by the DVS to support the future use of ETTP as a mixed-use commercial and industrial park. Therefore, remediation criteria were designed for the protection of the future industrial worker under the assumption the worker normally would not have the potential for exposure to soils at depths below 10 ft below ground surface (bgs). Accordingly, land use controls (LUCs) have been established to restrict disturbance of soils below 10 ft deep and to limit future land use to industriallcornmercial activities. Where the need for LUCs below 10 ft bgs is not warranted, this is so stated and explained. Once all actions associated with the DVS for Zone 1 and Zone 2 are completed and the data support it, there will be a re-evaluation with EPA and TDEC for the restriction on excavation below 10 ft. The DVS process and the preparation of this report included visual and physical inspections of the property and adjacent properties, a detailed records search, sampling and analysis of soils, radiological walkover surveys, and a risk evaluation. Resources evaluated as part of the records search included Federal Government records, title documents, aerial photographs that may reflect prior uses, and interviews with current and former employees 1 involved in the operations on the real property to identify any areas on the property where hazardous substances and petroleum products, or their derivatives, and acutely hazardous wastes were stored for one year or more, known to have been released, or disposed of. In addition, radiological surveys of Bldgs. K-791-B and K-796-A were conducted to assess the buildings radiological condition. Soil vapor sampling and polychlorinated biphenyl (PCB) swipe sampling also were conducted within the buildings. Based on the U. S. Department of Energy's (DOE's) review of the existing information, including discussions and interviews referenced herein, and evaluation of the data gathered in preparation of the environmental baseline survey (EBS) for the K-792 Switchyard Complex, DOE recommends the following: Due to the uncertainty associated with the nature of the on-site groundwater and the need to evaluate and possibly address groundwater in the future, DOE recommends that the transfer of the K-792 Switchyard Complex be achieved by a covenant deferral per the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) Sect. 120(h)(3)(c). Land use restrictions associated with the covenant deferral are described.

SAIC

2009-12-01T23:59:59.000Z

18

CX-007137: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

37: Categorical Exclusion Determination 37: Categorical Exclusion Determination CX-007137: Categorical Exclusion Determination Davis Dam Lower 230-kilovolt Substation Service Building Demolition CX(s) Applied: B1.23 Date: 03/03/2011 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region Western Area Power Administration (Western) plans to demolish a service building located in the Lower 230-kilovolt Switchyard at Davis Dam, because it no longer meets our needs and we do not anticipate finding a use for it in the future. The building is currently vacant and has been for years. We plan to begin the work on April 1, 2011 and complete it by December 31, 2011. CX-007137.pdf More Documents & Publications EA-1595: Mitigation Action Plan EA-1595: Final Environmental Assessment

19

Stage design  

DOE Patents (OSTI)

A method is described of cycling gases through a plurality of diffusion stages comprising the steps of admitting the diffused gases from a first diffusion stage into an axial compressor, simultaneously admitting the undiffused gases from a second diffusion stage into an intermediate pressure zone of said compressor corresponding in pressure to the pressure of said undiffused gases, and then admitting the resulting compressed mixture of diffused and undiffused gases into a third diffusion stage.

Shacter, J.

1975-12-01T23:59:59.000Z

20

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

61 - 24270 of 31,917 results. 61 - 24270 of 31,917 results. Download CX-003194: Categorical Exclusion Determination Installation of a Mid-Span Interset Structure between Structures 141/1 and 141/2 on the Existing Davis Dam-Prescott 230-Kilovolt Transmission Line in Yavapai County, Arizona CX(s) Applied: B4.13 Date: 06/10/2010 Location(s): Yavapai County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region http://energy.gov/nepa/downloads/cx-003194-categorical-exclusion-determination Download CX-004896: Categorical Exclusion Determination Davis Dam Switchyards (Erosion Control) CX(s) Applied: B1.3 Date: 08/12/2010 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region http://energy.gov/nepa/downloads/cx-004896-categorical-exclusion-determination

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Categorical Exclusion (CX) Determinations By Date | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2, 2010 2, 2010 CX-003624: Categorical Exclusion Determination Replacement of Twenty 22-L Structures on the Satsop-Aberdeen Number 2 230-kilovolt Transmission Line CX(s) Applied: B1.3 Date: 08/12/2010 Location(s): Gray's Harbor County, Washington Office(s): Bonneville Power Administration August 12, 2010 CX-004896: Categorical Exclusion Determination Davis Dam Switchyards (Erosion Control) CX(s) Applied: B1.3 Date: 08/12/2010 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region August 12, 2010 CX-003417: Categorical Exclusion Determination Energy Efficiency Projects CX(s) Applied: B5.1 Date: 08/12/2010 Location(s): Plover, Wisconsin Office(s): Energy Efficiency and Renewable Energy, Golden Field Office August 12, 2010 CX-003405: Categorical Exclusion Determination

22

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

61 - 6170 of 28,905 results. 61 - 6170 of 28,905 results. Download CX-010544: Categorical Exclusion Determination Glen Canyon Switchyard - 230 Kilovolt Wavetrap Removal - TZ9A2 on the Navajo Line CX(s) Applied: B4.11 Date: 06/21/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region http://energy.gov/nepa/downloads/cx-010544-categorical-exclusion-determination Download CX-010546: Categorical Exclusion Determination Liberty Substation Transformer Replacement Project, Maricopa County, Arizona CX(s) Applied: B4.11 Date: 06/06/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region http://energy.gov/nepa/downloads/cx-010546-categorical-exclusion-determination Download CX-010552: Categorical Exclusion Determination

23

Microsoft Word - CX-Coulee_Westside_Relay_Replacement_130205.docx  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

6, 2013 6, 2013 REPLY TO ATTN OF: KEC-4 SUBJECT: Environmental Clearance Memorandum Roy Slocum Project Manager - TEP-CSB-2 Proposed Action: Coulee-Westside Transfer Trip Replacement Categorical Exclusion Applied (from Subpart D, 10 C.F.R. Part 1021): B1.7 Electronic Equipment Locations: Grand Coulee, WA and Spokane, WA Proposed by: Bonneville Power Administration (BPA) Description of the Proposed Action: The BPA has entered into a three-party agreement with Bureau of Reclamation (Bureau) and Avista Corporation (Avista) to coordinate the replacement of relays and removal of transfer trip equipment at Avista's Westside Substation and the Bureau's Grand Coulee Switchyard on the Grand Coulee-Westside 230-kilovolt (kV) Transmission Line. Under this agreement, BPA proposes to:

24

CX-004896: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4896: Categorical Exclusion Determination 4896: Categorical Exclusion Determination CX-004896: Categorical Exclusion Determination Davis Dam Switchyards (Erosion Control) CX(s) Applied: B1.3 Date: 08/12/2010 Location(s): Mohave County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region Western Area Power Administration proposes to conduct erosion control between the new Davis Dam 69-kilovolts and upper 230-kilovolts wwitchyards. This will consist of building two 3 feet by 3 feet by 12 feet gabions, which are rock-filled with 4-8 inch riprap stocked one on top of the other on the north ends of the wwitchyards. The 6 feet by 6 feet by 6 feet washed out area shall be filled and compacted with native soil and a high survivability filter fabric spread out beneath the gabions.

25

CX-010109: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusion Determination Curecanti-Poncha 230 Kilovolt Transmission Line Cross Bar Ranch Project CX(s) Applied: B1.3 Date: 04252013 Location(s): Colorado...

26

EIS-0413: Record of Decision | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

of the proposed Searchlight Wind Energy Project to Western's Davis-Mead 230-kilovolt transmission line and to construct, own, and operate a new switching station to...

27

EIS-0399: Record of Decision | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Department of Energy announces its decision to issue a Presidential permit to Montana Alberta Tie Limited to construct, operate, and maintain a 230-kilovolt transmission line along...

28

EIS-0399: Record of Decision | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

The Western Area Power Administration has decided to finance a portion of the Montana Alberta Tie Limited 230-kilovolt transmission line in exchange for ownership of 50 megawatts...

29

CX-007993: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Determination CX-007993: Categorical Exclusion Determination Hatwai 230-Kilovolt Substation Breaker Replacement CX(s) Applied: B4.6 Date: 02092012 Location(s): Idaho...

30

Nuclear Maintenance Applications Center: Switchyard Equipment Application and Maintenance Guide  

Science Conference Proceedings (OSTI)

BackgroundNuclear power plants have safety- and non-safety-related electric buses powered by their preferred power source, which is the local transmission system and might include some distribution circuits. These plants have been given more responsibility for ensuring the reliability of their connection to the grid. Regional and federal reliability standards are in place and must be adhered to under enforceable ...

2012-12-05T23:59:59.000Z

31

Multiple stage railgun  

DOE Patents (OSTI)

A multiple stage magnetic railgun accelerator (10) for accelerating a projectile (15) by movement of a plasma arc (13) along the rails (11,12). The railgun (10) is divided into a plurality of successive rail stages (10a-n) which are sequentially energized by separate energy sources (14a-n) as the projectile (15) moves through the bore (17) of the railgun (10). Propagation of energy from an energized rail stage back towards the breech end (29) of the railgun (10) can be prevented by connection of the energy sources (14a-n) to the rails (11,12) through isolation diodes (34a-n). Propagation of energy from an energized rail stage back towards the breech end of the railgun can also be prevented by dividing the rails (11,12) into electrically isolated rail sections (11a-n, 12a-n). In such case means (55a-n) are used to extinguish the arc at the end of each energized stage and a fuse (31) or laser device (61) is used to initiate a new plasma arc in the next energized rail stage.

Hawke, Ronald S. (Livermore, CA); Scudder, Jonathan K. (Pleasanton, CA); Aaland, Kristian (Livermore, CA)

1982-01-01T23:59:59.000Z

32

Upper Stage Explosion  

E-Print Network (OSTI)

The explosion of a failed launch vehicle upper stage on 16 October created thousands of new debris which pose collision risks to hundreds of satellites operating in low Earth orbit (LEO), including the International Space Station (ISS). Fortunately, the threat will be relatively short-lived with the majority of the debris expected to reenter the atmosphere within one year. The explosion of the Proton Briz-M stage (International Designator 2012-044C, U.S. Satellite Number 38746) occurred just a day after the publication of the October 2012 issue of the Orbital Debris Quarterly News, which contained an article describing the potential for just such a breakup (ODQN, October 2012, pp. 2-3). The stage

Places Leo; Satellites Risk

2013-01-01T23:59:59.000Z

33

Staged fluidized bed  

DOE Patents (OSTI)

The invention relates to oil shale retorting and more particularly to staged fluidized bed oil shale retorting. Method and apparatus are disclosed for narrowing the distribution of residence times of any size particle and equalizing the residence times of large and small particles in fluidized beds. Particles are moved up one fluidized column and down a second fluidized column with the relative heights selected to equalize residence times of large and small particles. Additional pairs of columns are staged to narrow the distribution of residence times and provide complete processing of the material.

Mallon, R.G.

1983-05-13T23:59:59.000Z

34

Multi-stage cleaning plant  

SciTech Connect

A cleaning plant positioned within an annular fluidized bed combustion chamber is divided into a plurality of separate cleaning stages, wherein a first stage is located adjacent the fluidized bed and additional stages are arranged within the first stage. Each stage comprises a plurality of separate cleaning devices which act in parallel, while cleaning devices of different stages act in series to remove debris from the combustion gases that exit from the fluidized bed combustion chamber.

Kullendorff, A.; Wikner, J.

1980-12-09T23:59:59.000Z

35

Stage Management & Technology  

E-Print Network (OSTI)

Stage managers provide centralized communication, organization, and task coordination for all individuals in the production team. This study explores the advantages and disadvantages of different and new forms of technology implemented into various facets of theatrical production and the provisions of the stage manager outlined above. Technology will be compared to traditional methods to determine the differences in the efficiency of communication and documentation. The purpose of this study is to determine if universal, user-friendly technologies are capable of achieving the desired tasks of the stage manager by reaching multiple points of reference. Three different forms of technology are utilized as tools to assess their efficiency: social networking, VirtualCallboard, and the iPad. These tools are employed to analyze communication across the production team. The intention is to eliminate the need for paper documentation and duplication while increasing the effectiveness of communication. These findings will determine which segments and systems of the research are universally applicable. They will also suggest which technologies are a practical approach for assisting with the tasks and responsibilities of the stage manager. Analysis of this research will establish if these sources provide a reasonable advantage in a theatrical setting and if they are dependable enough to use in place of traditional methods.

O'Brien, Madison D

2013-05-01T23:59:59.000Z

36

Staged fluidized bed  

DOE Patents (OSTI)

Method and apparatus for narrowing the distribution of residence times of any size particle and equalizing the residence times of large and small particles in fluidized beds. Particles are moved up one fluidized column and down a second fluidized column with the relative heights selected to equalize residence times of large and small particles. Additional pairs of columns are staged to narrow the distribution of residence times and provide complete processing of the material.

Mallon, Richard G. (Livermore, CA)

1984-01-01T23:59:59.000Z

37

Staged depressurization system  

DOE Patents (OSTI)

A nuclear reactor having a reactor vessel disposed in a containment shell is depressurized in stages using depressurizer valves coupled in fluid communication with the coolant circuit. At least one sparger submerged in the in-containment refueling water storage tank which can be drained into the containment sump communicates between one or more of the valves and an inside of the containment shell. The depressurizer valves are opened in stages, preferably at progressively lower coolant levels and for opening progressively larger flowpaths to effect depressurization through a number of the valves in parallel. The valves can be associated with a pressurizer tank in the containment shell, coupled to a coolant outlet of the reactor. At least one depressurization valve stage openable at a lowest pressure is coupled directly between the coolant circuit and the containment shell. The reactor is disposed in the open sump in the containment shell, and a further valve couples the open sump to a conduit coupling the refueling water storage tank to the coolant circuit for adding water to the coolant circuit, whereby water in the containment shell can be added to the reactor from the open sump. 4 figures.

Schulz, T.L.

1993-11-02T23:59:59.000Z

38

Staged depressurization system  

DOE Patents (OSTI)

A nuclear reactor having a reactor vessel disposed in a containment shell is depressurized in stages using depressurizer valves coupled in fluid communication with the coolant circuit. At least one sparger submerged in the in-containment refueling water storage tank which can be drained into the containment sump communicates between one or more of the valves and an inside of the containment shell. The depressurizer valves are opened in stages, preferably at progressively lower coolant levels and for opening progressively larger flowpaths to effect depressurization through a number of the valves in parallel. The valves can be associated with a pressurizer tank in the containment shell, coupled to a coolant outlet of the reactor. At least one depressurization valve stage openable at a lowest pressure is coupled directly between the coolant circuit and the containment shell. The reactor is disposed in the open sump in the containment shell, and a further valve couples the open sump to a conduit coupling the refueling water storage tank to the coolant circuit for adding water to the coolant circuit, whereby water in the containment shell can be added to the reactor from the open sump.

Schulz, Terry L. (Murrysville Boro, Westmoreland County, PA)

1993-01-01T23:59:59.000Z

39

Staged cascade fluidized bed combustor  

DOE Patents (OSTI)

A fluid bed combustor comprising a plurality of fluidized bed stages interconnected by downcomers providing controlled solids transfer from stage to stage. Each stage is formed from a number of heat transfer tubes carried by a multiapertured web which passes fluidizing air to upper stages. The combustor cross section is tapered inwardly from the middle towards the top and bottom ends. Sorbent materials, as well as non-volatile solid fuels, are added to the top stages of the combustor, and volatile solid fuels are added at an intermediate stage.

Cannon, Joseph N. (4103 Farragut St., Hyattsville, MD 20781); De Lucia, David E. (58 Beacon St., Apt. No. 2, Boston, MA 02108); Jackson, William M. (5300 McArthur Blvd., NW., Washington, DC 20016); Porter, James H. (P.O. Box 1131, Daggett Ave., Vineyard Haven, MA 02568)

1984-01-01T23:59:59.000Z

40

CX-008378: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8378: Categorical Exclusion Determination 8378: Categorical Exclusion Determination CX-008378: Categorical Exclusion Determination Archer 230 Kilovolt Bay Addition for New Point of Delivery - Stage 07 CX(s) Applied: B4.6 Date: 03/08/2012 Location(s): CX: none Offices(s): Western Area Power Administration-Rocky Mountain Region Tri-State Generation and Transmission Association, Inc. (Tri-State), has requested an interconnection to Western Area Power Administration's (Western) Archer 230/115-Kilovolt (kV) Substation (Archer Substation). The Archer Substation is a Designated Point of Delivery from Western to Tri-State as set forth in Exhibit A of Contract No. 87-LAO-172 (TS-89-0005), Finn Electric Service (Contract). CX-008378.pdf More Documents & Publications CX-010891: Categorical Exclusion Determination

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Multiple stage miniature stepping motor  

DOE Patents (OSTI)

A stepping motor comprising a plurality of stages which may be selectively activated to effect stepping movement of the motor, and which are mounted along a common rotor shaft to achieve considerable reduction in motor size and minimum diameter, whereby sequential activation of the stages results in successive rotor steps with direction being determined by the particular activating sequence followed.

Niven, William A. (Livermore, CA); Shikany, S. David (Danville, CA); Shira, Michael L. (Fremont, CA)

1981-01-01T23:59:59.000Z

42

Two stage liquefaction of coal  

SciTech Connect

A two stage coal liquefaction process and apparatus comprising hydrogen donor solvent extracting, solvent deashing, and catalytic hydrocracking. Preferrably, the catalytic hydrocracking is performed in an ebullating bed hydrocracker.

Neuworth, Martin B. (Chevy Chase, MD)

1981-01-01T23:59:59.000Z

43

Performance limits of axial turbomachine stages  

E-Print Network (OSTI)

This thesis assesses the limits of stage efficiency for axial compressor and turbine stages. A stage model is developed, consisting of a specified geometry and a surface velocity distribution with turbulent boundary layers. ...

Hall, David Kenneth

2011-01-01T23:59:59.000Z

44

Operation of staged membrane oxidation reactor systems  

DOE Patents (OSTI)

A method of operating a multi-stage ion transport membrane oxidation system. The method comprises providing a multi-stage ion transport membrane oxidation system with at least a first membrane oxidation stage and a second membrane oxidation stage, operating the ion transport membrane oxidation system at operating conditions including a characteristic temperature of the first membrane oxidation stage and a characteristic temperature of the second membrane oxidation stage; and controlling the production capacity and/or the product quality by changing the characteristic temperature of the first membrane oxidation stage and/or changing the characteristic temperature of the second membrane oxidation stage.

Repasky, John Michael

2012-10-16T23:59:59.000Z

45

Multi-stage flash degaser  

DOE Patents (OSTI)

A multi-stage flash degaser is incorporated in an energy conversion system having a direct-contact, binary-fluid heat exchanger to remove essentially all of the noncondensable gases from geothermal brine ahead of the direct-contact binary-fluid heat exchanger in order that the heat exchanger and a turbine and condenser of the system can operate at optimal efficiency.

Rapier, P.M.

1980-06-26T23:59:59.000Z

46

CX-010427: Categorical Exclusion Determination | Department of...  

NLE Websites -- All DOE Office Websites (Extended Search)

which is located within PacifiCorp's McNary-Wallula 230-kilovolt (kV) transmission line right-of-way (ROW). CX-010427.pdf More Documents & Publications CX-010425: Categorical...

47

ENVIRONMENTAL REVIEW FOR CATEGORICAL EXCLUSION DETERMINATION  

NLE Websites -- All DOE Office Websites (Extended Search)

roads and right-of-way (ROW) along the Curecanti-Lost Canyon (CCI-LCN) 230-kilovolt (kV) transmission line at structures 02 to 13, 32, 81, 86, 96 to 97, 122 to 142, 155,...

48

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Download CX-007993: Categorical Exclusion Determination Hatwai 230-Kilovolt Substation Breaker Replacement CX(s) Applied: B4.6 Date: 02092012 Location(s): Idaho Offices(s):...

49

Categorical Exclusion Determinations: American Recovery and Reinvestme...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1, 2010 CX-003792: Categorical Exclusion Determination Replacement of Overhead Ground Wire - Fairview-Rogue Number 1 230-Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 09...

50

EIS-0496: San Luis Transmission Project, Alameda, Merced, San...  

NLE Websites -- All DOE Office Websites (Extended Search)

proposes at a minimum to construct, own, operate, and maintain a new 230-kilovolt (kV) transmission line about 62 miles in length between Western's Tracy Substation and...

51

EIS-0414: EPA Notice of Availability of the Draft Environmental Impact Statement  

Energy.gov (U.S. Department of Energy (DOE))

Energia Sierra Juarez U.S. Transmission Line Project, Construction, Operation, Maintenance, and Connection of either 230-kilovolt or a 500-kilovolt Electric Transmission Line Crossing U.S.-Mexico Border

52

CX-008704: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Grand Coulee-Bell No. 3 Double Circuit 230 Kilovolt Transmission Line Reconductoring Project CX(s) Applied: B1.3 Date: 05/31/2012 Location(s): Washington, Washington, Washington Offices(s): Bonneville Power Administration

53

CX-009408: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

of Curecanti-Lost Canyon 230 Kilovolt Access Roads and Western Area Power Administration Right-of-Way CX(s) Applied: B1.3 Date: 05222012 Location(s): Colorado, Colorado,...

54

Multi-stage flash degaser  

DOE Patents (OSTI)

A multi-stage flash degaser (18) is incorporated in an energy conversion system (10) having a direct-contact, binary-fluid heat exchanger to remove essentially all of the noncondensable gases from geothermal brine ahead of the direct-contact binary-fluid heat exchanger (22) in order that the heat exchanger (22) and a turbine (48) and condenser (32) of the system (10) can operate at optimal efficiency.

Rapier, Pascal M. (Richmond, CA)

1982-01-01T23:59:59.000Z

55

Staged direct injection diesel engine  

DOE Patents (OSTI)

A diesel engine having staged injection for using lower cetane number fuels than No. 2 diesel fuel. The engine includes a main fuel injector and a pilot fuel injector. Pilot and main fuel may be the same fuel. The pilot injector injects from five to fifteen percent of the total fuel at timings from 20.degree. to 180.degree. BTDC depending upon the quantity of pilot fuel injected, the fuel cetane number and speed and load. The pilot fuel injector is directed toward the centerline of the diesel cylinder and at an angle toward the top of the piston, avoiding the walls of the cylinder. Stratification of the early injected pilot fuel is needed to reduce the fuel-air mixing rate, prevent loss of pilot fuel to quench zones, and keep the fuel-air mixture from becoming too fuel lean to become effective. In one embodiment, the pilot fuel injector includes a single hole for injection of the fuel and is directed at approximately 48.degree. below the head of the cylinder.

Baker, Quentin A. (San Antonio, TX)

1985-01-01T23:59:59.000Z

56

The stages of nonprofit advocacy  

E-Print Network (OSTI)

This dissertation argues that advocacy is a two-stage decision in which organizations must first decide whether or not to undertake political activity through advocacy or lobbying and then choose between the set of strategic actions that, based on available financial and human resources, are available to them. These are separate decisions with separate constraints. The decision to advocate is a strategic stance taken by nonprofit organizations in policy environments that necessitate such activity and in which it is politically conducive for them to undertake the cost of such actions. Once an organization has decided that it will undertake advocacy activities, it must determine the specific activities, collaboration, grassroots advocacy, or direct lobbying, that will help it to pursue that course most effectively. These hypotheses are tested in an analysis of the advocacy activities of over 500 nonprofit reproductive health service providers. Data for this study were gathered from the National Center for Charitable Statistics within the Urban Institute and directly from IRS Form 990s filed by the organizations. The findings suggest that there are strong and consistent relationships between policy and politics and the political activity of nonprofit service providers. In states with more restrictive reproductive health policy environments, nonprofit organizations that provide these services are more likely to engage in advocacy activity. The findings also suggest that, even when controlling for the policy environment, 501(c)(3)s are more likely to become politically active in states where they have a larger number of political allies. Additional analyses suggest that there is a negative relationship between government monies and the aggressiveness of advocacy and the use of multiple advocacy strategies. Interestingly, this finding is consistent with the expectations offered in the resource dependence literature and the results suggest only a tenuous relationship between institutional variables and decisions regarding organizational aggressiveness in the choice of advocacy strategies.

Nicholson-Crotty, Jill Denise

2005-12-01T23:59:59.000Z

57

Integrated two-stage coal liquefaction process  

DOE Patents (OSTI)

This invention relates to an improved two-stage process for the production of liquid carbonaceous fuels and solvents from carbonaceous solid fuels, especially coal.

Bronfenbrenner, James C. (Allentown, PA); Skinner, Ronald W. (Allentown, PA); Znaimer, Samuel (Vancouver, CA)

1985-01-01T23:59:59.000Z

58

Multi-stage Cascaded Stirling Refrigerator  

NLE Websites -- All DOE Office Websites (Extended Search)

have developed a multi-stage refrigerator, designed to recapture and utilize the acoustic energy that would ordinarily be wasted in traditional Stirling configurations. Available...

59

A Two?Stage Oil Diffusion Pump  

Science Conference Proceedings (OSTI)

A two?stage oil diffusion pump built of glass is described which makes possible the utilization of the advantages of oil without requiring the use of an unusually good coarse vacuum. The novelty of the pump resides in the first stage which is so designed that it cannot clog even with the small clearances needed to work against high pressures.

Joseph E. Henderson

1935-01-01T23:59:59.000Z

60

STATE OF CALIFORNIA INSULATION STAGE CHECKLIST  

E-Print Network (OSTI)

on the building plans with diagrams and/or specific design drawings indicating the R-value of insulationSTATE OF CALIFORNIA INSULATION STAGE CHECKLIST CEC-CF-6R-ENV-22 (Revised 05/12) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-22 Quality Insulation Installation (QII) - Insulation Stage

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Dual stage active magnetic regenerator and method  

DOE Patents (OSTI)

A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl{sub 2} or (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy{sub 1{minus}x}Er{sub x})Al{sub 2} where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen. 17 figs.

Pecharsky, V.K.; Gschneidner, K.A. Jr.

1999-03-30T23:59:59.000Z

62

Dual stage active magnetic regenerator and method  

DOE Patents (OSTI)

A dual stage active magnetic regenerator refrigerator as well as method using the Joule-Brayton thermodynamic cycle includes a high temperature stage refrigerant comprising DyAl.sub.2 or (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than 0 and less than about 0.3 in combination with a low temperature stage comprising (Dy.sub.1-x Er.sub.x)Al.sub.2 where x is selected to be greater than about 0.5 and less than 1 to provide significantly improved refrigeration efficiency in the liquefaction of gaseous hydrogen.

Pecharsky, Vitalij K. (Ames, IA); Gschneidner, Jr., Karl A. (Ames, IA)

1999-03-30T23:59:59.000Z

63

Hybrid staging of geothermal energy conversion process  

DOE Green Energy (OSTI)

Progress in the demonstration of the feasibility of hybrid staging in geothermal energy conversion is described, particularly processes involving the Lysholm engine. The performance limitations of the Lysholm engine were studied. (MHR)

Steidel, R.F. Jr.

1984-05-07T23:59:59.000Z

64

ENVIRONMENTAL ASSESSMENT FOR HAZARDOUS WASTE STAGING FACILITY  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HAZARDOUS WASTE STAGING FACILITY HAZARDOUS WASTE STAGING FACILITY Project 39GF71024-GPDI21000000 . PANTEX PLANT AMARILLO, TEXAS DOE/EA-0688 JUNE 1993 MASTER DiSTRiBUTiON OF THIS DOCUMENT IS UNLIMITEI) ffrl TABLE OF CONTENTS Section Page 1.0 Need for Action 1 2.0 Description of Proposed Facility Action 3.0 Location of the Action 8 4.0 Alternatives to Proposed Action 9 4.1 No Action 9 4.2 Redesign and Modify Existing staging Facilities 9 4.3 Use Other Existing Space at Pantex Plant 9 4.4 Use Temporary Structures 9 4.5 Stage Waste at Other Sites 10 4.6 Stage Wastes Separately 10 5.0 Environmental Impacts of Proposed Action 10 5.1 Archeology 10 5.2 FloodplainlW etlands 10 5.3 Threatened and Endangered Species 10 5.4 Surrounding La,nd Use 11 5.5 Construction 11 5.6 Air Emissions 11

65

Hybrid staging of geothermal energy conversion processes  

SciTech Connect

A hybrid system consists of two or more energy conversion processes. This study examines the use of three energy conversion machines in hybrid systems: the conventional single-phase turbine, and the two-phase expanders known as the Lysholm engine and the radial outflow reaction turbine. Two hybrid systems are presented. The first is a two-stage, single-flash system with the Lysholm engine as the first stage, and a separator and conventional turbine as the second stage. The second system adds a radial outflow reaction turbine to recover a part of the energy rejected in the second stage. A theoretical specific power of 41.3 kW.s/lb is predicted for the two-stage, single-flash hybrid system. The addition of the radial outflow rotary turbine increases performance to 44.8 kW.s/lb. Both are superior to the double-flash system, with a specific power of 37.8 kW.s/lb. In addition, the hybrid system offers operating flexibility.

Steidel, R.F.

1978-09-01T23:59:59.000Z

66

Multi-Stage Multiple-Hypothesis Tracking  

E-Print Network (OSTI)

While multiple hypothesis tracking (MHT) is widely acknowledged as an effective methodology for multi-target surveillance, there is a challenge to manage effectively a potentially large number of track hypotheses. Advanced single-stage track-while-fuse does not always offer the best processing scheme. We study two instances where multi-stage MHT processing is beneficial–dense target scenarios and complementary-sensor surveillance–and propose two processing schemes for these challenges: track-break-fuse and trackbefore-fuse, respectively. We provide simulation results demonstrating the advantages of these schemes over track-while-fuse. Moregenerally, we argue that multi-stage MHT offers a powerful and flexible paradigm to circumvent limitations in conventional MHT processing.

Stefano Coraluppi; Craig Carthel

2009-01-01T23:59:59.000Z

67

Article mounting and position adjustment stage  

DOE Patents (OSTI)

An improved adjustment and mounting stage of the type used for the detection of laser beams is disclosed. A ring sensor holder has locating pins on a first side thereof which are positioned within a linear keyway in a surrounding housing for permitting reciprocal movement of the ring along the keyway. A rotatable ring gear is positioned within the housing on the other side of the ring from the linear keyway and includes an oval keyway which drives the ring along the linear keyway upon rotation of the gear. Motor-driven single-stage and dual (x, y) stage adjustment systems are disclosed which are of compact construction and include a large laser transmission hole. 6 figs.

Cutburth, R.W.; Silva, L.L.

1988-05-10T23:59:59.000Z

68

Thermally integrated staged methanol reformer and method  

DOE Green Energy (OSTI)

A thermally integrated two-stage methanol reformer including a heat exchanger and first and second reactors colocated in a common housing in which a gaseous heat transfer medium circulates to carry heat from the heat exchanger into the reactors. The heat transfer medium comprises principally hydrogen, carbon dioxide, methanol vapor and water vapor formed in a first stage reforming reaction. A small portion of the circulating heat transfer medium is drawn off and reacted in a second stage reforming reaction which substantially completes the reaction of the methanol and water remaining in the drawn-off portion. Preferably, a PrOx reactor will be included in the housing upstream of the heat exchanger to supplement the heat provided by the heat exchanger.

Skala, Glenn William (Churchville, NY); Hart-Predmore, David James (Rochester, NY); Pettit, William Henry (Rochester, NY); Borup, Rodney Lynn (East Rochester, NY)

2001-01-01T23:59:59.000Z

69

STAGING OF FUEL CELLS - PHASE II  

DOE Green Energy (OSTI)

TIAX has executed a laboratory-based development program aiming at the improvement of stationary fuel cell systems. The two-year long development program resulted in an improved understanding of staged fuel cells and inorganic proton conductors through evaluation of results from a number of laboratory tasks: (1) Development of a fuel cell modeling tool--Multi-scale model was developed, capable of analyzing the effects of materials and operating conditions; and this model allowed studying various ''what-if'' conditions for hypothetically staged fuel cells; (2) Study of new high temperature proton conductor--TIAX discovery of a new class of sulfonated inorganics capable of conducting protons when exposed to water; and study involved synthesis and conductivity measurements of novel compounds up to 140 C; (3) Electrochemical fuel cell measurements--the feasibility of staged fuel cells was tested in TIAX's fuel cell laboratories experimental design was based on results from modeling.

Per Onnerud; Suresh Sriramulu

2002-08-29T23:59:59.000Z

70

Two-stage coal liquefaction process  

SciTech Connect

An improved SRC-I two-stage coal liquefaction process which improves the product slate is provided. Substantially all of the net yield of 650.degree.-850.degree. F. heavy distillate from the LC-Finer is combined with the SRC process solvent, substantially all of the net 400.degree.-650.degree. F. middle distillate from the SRC section is combined with the hydrocracker solvent in the LC-Finer, and the initial boiling point of the SRC process solvent is increased sufficiently high to produce a net yield of 650.degree.-850.degree. F. heavy distillate of zero for the two-stage liquefaction process.

Skinner, Ronald W. (Allentown, PA); Tao, John C. (Perkiomenville, PA); Znaimer, Samuel (Vancouver, CA)

1985-01-01T23:59:59.000Z

71

In-Stage Assessment Process Guide | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

In-Stage Assessment Process Guide In-Stage Assessment Process Guide Provides guidance on conducting an In-Stage Assessment (ISA). An ISA is an independent review of a project's...

72

Multi-Stage Bunch Compressors for the International Linear Collider  

E-Print Network (OSTI)

150 µm RMS. The multi-stage compressors are somewhat longerthan the single-stage compressor and require additional RFof the NLC Bunch Compressor,” (1999). [4] C. Adolphsen,

Tenenbaum, Peter G.; Raubenheimer, Tor O.; Wolski, Andrzej

2005-01-01T23:59:59.000Z

73

Staging laser plasma accelerators for increased beam energy  

E-Print Network (OSTI)

Staging Laser Plasma Accelerators for Increased Beam Energy94720, USA Abstract. Staging laser plasma accelerators is anefficient way of mitigating laser pump depletion in laser

Panasenko, Dmitriy

2010-01-01T23:59:59.000Z

74

Staging Rankine Cycles Using Ammonia for OTEC Power Production  

NLE Websites -- All DOE Office Websites (Extended Search)

powers with the number of stages ... 9 Figure 7 Variation of heat exchanger (UA) product requirements with the number of stages ..... 10 List of Tables...

75

NETL: Staged, High-Pressure Oxy-Combustion Technology: Development...  

NLE Websites -- All DOE Office Websites (Extended Search)

tool Conducting CFD-aided design of a novel staged combustion vessel and radiative heat exchanger Performing lab-scale experiments of staged combustion without flue gas...

76

Early Stage R&D Available for Partnerships - Energy Innovation ...  

Bookmark Early Stage R&D Available for Partnerships - Energy Innovation Portal on Google; Bookmark Early Stage R&D Available for Partnerships ...

77

Fusion in a Staged Z-pinch  

E-Print Network (OSTI)

York (1978) Teller, E. : Fusion. Academic Press, New York (O R I G I N A L A RT I C L E Fusion in a Staged Z-pinch H.U.implosion the sim- ulated fusion-energy yield is 7.6 MJ,

Rahman, H. U.; Ney, P.; Rostoker, N.; Wessel, F. J.

2009-01-01T23:59:59.000Z

78

Two stage sorption of sulfur compounds  

DOE Patents (OSTI)

A two stage method for reducing the sulfur content of exhaust gases is disclosed. Alkali- or alkaline-earth-based sorbent is totally or partially vaporized 10 and introduced into a sulfur-containing gas stream. The activated sorbent can be introduced in the reaction zone or the exhaust gases of a combustor or a gasifier. High efficiencies of sulfur removal can be achieved.

Moore, W.E.

1991-12-31T23:59:59.000Z

79

Two stage sorption of sulfur compounds  

DOE Patents (OSTI)

A two stage method for reducing the sulfur content of exhaust gases is disclosed. Alkali- or alkaline-earth-based sorbent is totally or partially vaporized and introduced into a sulfur-containing gas stream. The activated sorbent can be introduced in the reaction zone or the exhaust gases of a combustor or a gasifier. High efficiencies of sulfur removal can be achieved.

Moore, William E. (Manassas, VA)

1992-01-01T23:59:59.000Z

80

Two-stage coal gasification and desulfurization  

DOE Patents (OSTI)

The present invention is directed to a system which effectively integrates a two-stage, fixed-bed coal gasification arrangement with hot fuel gas desulfurization of a first stream of fuel gas from a lower stage of the two-stage gasifier and the removal of sulfur from the sulfur sorbent regeneration gas utilized in the fuel-gas desulfurization process by burning a second stream of fuel gas from the upper stage of the gasifier in a combustion device in the presence of calcium-containing material. The second stream of fuel gas is taken from above the fixed bed in the coal gasifier and is laden with ammonia, tar and sulfur values. This second stream of fuel gas is burned in the presence of excess air to provide heat energy sufficient to effect a calcium-sulfur compound forming reaction between the calcium-containing material and sulfur values carried by the regeneration gas and the second stream of fuel gas. Any ammonia values present in the fuel gas are decomposed during the combustion of the fuel gas in the combustion chamber. The substantially sulfur-free products of combustion may then be combined with the desulfurized fuel gas for providing a combustible fluid utilized for driving a prime mover. 1 fig.

Bissett, L.A.; Strickland, L.D.

1990-08-03T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

STATE OF CALIFORNIA FRAMING STAGE CHECKLIST  

E-Print Network (OSTI)

on the building plans with diagrams and/or specific design drawings indicating the R-value of insulation COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-21-HERS Quality Insulation Installation (QII) - Framing Stage Checklist (Page 1 of 2) Site Address: Enforcement Agency: Permit Number: Quality Insulation Installation

82

Pressurization of whole element canister during staging  

DOE Green Energy (OSTI)

An analytical model was developed to estimate the buildup of gas pressure for a single outer element in a hot cell test container for a post cold vacuum drying staging/storage test. This model considers various sources of gas generation and gas consumption as a function of time. In a canister containing spent nuclear fuel, hydrogen is generated from the reactions of uranium with free water or hydrated water, hydride decomposition, and radiolysis. The canister pressurization model predicts a stable pressure and a peak temperature during staging, with an assumption that a fuel element contains 40 gm of corrosion products and a decay heat of 2.07 or 1.06 Watts. Calculations were also performed on constant temperature tests for fuel elements containing varied amounts of sludge tested at 150, 125, 105, and 85 C. The pressurization model will be used to evaluate test results obtained from post-drying testing on whole fuel elements.

Huang, F.F.

1998-01-27T23:59:59.000Z

83

CX-006253: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

53: Categorical Exclusion Determination 53: Categorical Exclusion Determination CX-006253: Categorical Exclusion Determination North Bonneville-Ross #1 230-Kilovolt, North Bonneville-Troutdale #2 230-Kilovolt Transmission Line Maintenance CX(s) Applied: B4.13 Date: 06/14/2011 Location(s): Clark County, Washington Office(s): Bonneville Power Administration Bonneville Power Administration (BPA) proposes to conduct transmission line maintenance along a portion of the North Bonneville-Ross #1 and North Bonneville-Troutdale #2 230-kilovolt transmission lines. The maintenance activities will take place within the existing transmission line and access road right-of-way easements and includes upgrading existing roads, developing new roads, installing two new wood pole structures and two new steel tower structures.

84

Relicensing: Adding an extra stage of consultation  

Science Conference Proceedings (OSTI)

Recognizing the value of getting public feedback about its hydro facilities, Montana Power Company is voluntarily going one step beyond FERC's prescribed three-stage consultation process during relicensing of its Missouri-Madison hydro project. Montana Power's attempt to get all the players in the game led the utility to add an extra step to FERC's three-step consultation process for relicensing a hydro project. The additional step gave the utility an opportunity to learn more about the needs and concerns of the public and resource agencies. Simultaneously, it allowed the public an opportunity to gain a better understanding of Montana Power, the project, relicensing, and hydroelectricity in general. The three steps of FERC's consultation process require the applicant to meet with agencies and the public; to perform studies and write a draft application; and to file a final application with FERC and the consulting agencies. The public is given a chance to make comments about the project at each stage of the process. Montana Power started the relicensing process for its Missouri-Madison Project (FERC No. 2188) in the summer of 1989. The license for the project will expire in November 1994. After completing the meetings with the agencies and the public in the first step, Montana Power decided to add an extra stage of consultation with the agencies and public before writing the draft application.

Sullivan, M.G. (Montana Power Company, Butte, MT (United States))

1992-09-01T23:59:59.000Z

85

Multi-stage fuel cell system method and apparatus  

DOE Patents (OSTI)

A high efficiency, multi-stage fuel cell system method and apparatus is provided. The fuel cell system is comprised of multiple fuel cell stages, whereby the temperatures of the fuel and oxidant gas streams and the percentage of fuel consumed in each stage are controlled to optimize fuel cell system efficiency. The stages are connected in a serial, flow-through arrangement such that the oxidant gas and fuel gas flowing through an upstream stage is conducted directly into the next adjacent downstream stage. The fuel cell stages are further arranged such that unspent fuel and oxidant laden gases too hot to continue within an upstream stage because of material constraints are conducted into a subsequent downstream stage which comprises a similar cell configuration, however, which is constructed from materials having a higher heat tolerance and designed to meet higher thermal demands. In addition, fuel is underutilized in each stage, resulting in a higher overall fuel cell system efficiency.

George, Thomas J. (Morgantown, WV); Smith, William C. (Morgantown, WV)

2000-01-01T23:59:59.000Z

86

Multi-stage fuel cell system method and apparatus  

DOE Patents (OSTI)

A high efficiency, multi-stage fuel cell system method and apparatus is provided. The fuel cell system is comprised of multiple fuel cell stages, whereby the temperatures of the fuel and oxidant gas streams and the percentage of fuel consumed in each stage are controlled to optimize fuel cell system efficiency. The stages are connected in a serial, flow-through arrangement such that the oxidant gas and fuel gas flowing through an upstream stage is conducted directly into the next adjacent downstream stage. The fuel cell stages are further arranged such that unspent fuel and oxidant laden gases too hot to continue within an upstream stage because of material constraints are conducted into a subsequent downstream stage which comprises a similar cell configuration, however, which is constructed from materials having a higher heat tolerance and designed to meet higher thermal demands. In addition, fuel is underutilized in each stage, resulting in a higher overall fuel cell system efficiency.

George, Thomas J.; Smith, William C.

1997-12-01T23:59:59.000Z

87

Hybrid staging of a Lysholm positive displacement engine with two Westinghouse two stage impulse Curtis turbines  

SciTech Connect

The University of California at Berkeley has tested and modeled satisfactorly a hybrid staged Lysholm engine (positive displacement) with a two stage Curtis wheel turbine. The system operates in a stable manner over its operating range (0/1-3/1 water ratio, 120 psia input). Proposals are made for controlling interstage pressure with a partial admission turbine and volume expansion to control mass flow and pressure ratio for the Lysholm engine.

Parker, D.A.

1982-06-01T23:59:59.000Z

88

Inter-stage and Performance Tests of a Two-stage High-pressure Turbine  

E-Print Network (OSTI)

The existing 3-stage research turbine at Turbomachinery Performance and Flow Research Laboratory (TPFL) facility, Texas A & M University (TAMU) was replaced with a newly designed and manufactured 2-stage turbine in accordance with the design requirements as per DooSan, DHI. This new design of turbine consisted of bowed stator and rotor blades to study the effect on reduction of secondary ow losses and thus improvement in turbine efficiency if any. The new design also incorporated labyrinth seals on both inner and outer shrouds. Extensive Inter-stage and Performance experiments were carried out on this new turbine. Inter-stage measurements were accomplished by traversing three 5-hole probes radially and circumferentially, using the existing probe traverse system in TPFL. Performance tests were conducted for varying pressure ratio, at fixed rotational speed and for varying rotational speed with fixed pressure ratio and the efficiency was plotted against u/c_0. Each condition was tested and measured two to three times to check for reproducibility of the data. The results from inter-stage experiments show that the rotor row loss coefficient is about four times higher than the stator row loss coefficient. This high rotor loss coefficient reduces the total to static efficiency. From the performance tests, the maximum total-to-static efficiency observed was 85.2 percent located at around u/c_0 = 0.75. This relatively low efficiency is in consonance with the inter-stage results (high rotor loss coefficient).

Sharma, Kapil

2011-05-01T23:59:59.000Z

89

The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster  

Science Conference Proceedings (OSTI)

It is futile for a double stage Hall thruster to design a special ionization stage if the ionized ions cannot enter the acceleration stage. Based on this viewpoint, the ion transport under different magnetic field strengths in the ionization stage is investigated, and the physical mechanisms affecting the ion transport are analyzed in this paper. With a combined experimental and particle-in-cell simulation study, it is found that the ion transport between two stages is chiefly affected by the potential well, the potential barrier, and the potential drop at the bottom of potential well. With the increase of magnetic field strength in the ionization stage, there is larger plasma density caused by larger potential well. Furthermore, the potential barrier near the intermediate electrode declines first and then rises up while the potential drop at the bottom of potential well rises up first and then declines as the magnetic field strength increases in the ionization stage. Consequently, both the ion current entering the acceleration stage and the total ion current ejected from the thruster rise up first and then decline as the magnetic field strength increases in the ionization stage. Therefore, there is an optimal magnetic field strength in the ionization stage to guide the ion transport between two stages.

Yu Daren; Song Maojiang; Li Hong; Liu Hui; Han Ke [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

2012-11-15T23:59:59.000Z

90

Initial stages of high temperature metal oxidation  

Science Conference Proceedings (OSTI)

The application of XPS and UPS to the study of the initial stages of high temperature (> 350/sup 0/C) electrochemical oxidation of iron and nickel is discussed. In the high temperature experiments, iron and nickel electrodes were electrochemically oxidized in contact with a solid oxide electrolyte in the uhv system. The great advantages of this technique are that the oxygen activity at the interface may be precisely controlled and the ability to run the reactions in uhv allows the simultaneous observation of the reactions by XPS.

Yang, C.Y.; O'Grady, W.E.

1981-01-01T23:59:59.000Z

91

Turbine nozzle stage having thermocouple guide tube  

SciTech Connect

A guide tube is fixed adjacent opposite ends in outer and inner covers of a nozzle stage segment. The guide tube is serpentine in shape between the outer and inner covers and extends through a nozzle vane. An insert is disposed in the nozzle vane and has apertures to accommodate serpentine portions of the guide tube. Cooling steam is also supplied through chambers of the insert on opposite sides of a central insert chamber containing the guide tube. The opposite ends of the guide tube are fixed to sleeves, in turn fixed to the outer and inner covers.

Schotsch, Margaret Jones (Greer, SC); Kirkpatrick, Francis Lawrence (late of Galway, NY); Lapine, Eric Michael (Northwood, NH)

2002-01-01T23:59:59.000Z

92

Catalytic multi-stage liquefaction (CMSL)  

DOE Green Energy (OSTI)

Under contract with the U.S. Department of Energy, Hydrocarbon Technologies, Inc. has conducted a series of eleven catalytic, multi-stage, liquefaction (CMSL) bench scale runs between February, 1991, and September, 1995. The purpose of these runs was to investigate novel approaches to liquefaction relating to feedstocks, hydrogen source, improved catalysts as well as processing variables, all of which are designed to lower the cost of producing coal-derived liquid products. This report summarizes the technical assessment of these runs, and in particular the evaluation of the economic impact of the results.

Comolli, A.G.; Ganguli, P.; Karolkiewicz, W.F.; Lee, T.L.K.; Pradhan, V.R.; Popper, G.A.; Smith, T.; Stalzer, R.

1996-11-01T23:59:59.000Z

93

Multiple stage multiple filter hydrate store  

DOE Patents (OSTI)

An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means for separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means. 7 figs.

Bjorkman, H.K. Jr.

1983-05-31T23:59:59.000Z

94

Device for staged carbon monoxide oxidation  

DOE Patents (OSTI)

A method and apparatus for selectively oxidizing carbon monoxide in a hydrogen rich feed stream. The method comprises mixing a feed stream consisting essentially of hydrogen, carbon dioxide, water and carbon monoxide with a first predetermined quantity of oxygen (air). The temperature of the mixed feed/oxygen stream is adjusted in a first the heat exchanger assembly (20) to a first temperature. The mixed feed/oxygen stream is sent to reaction chambers (30,32) having an oxidation catalyst contained therein. The carbon monoxide of the feed stream preferentially absorbs on the catalyst at the first temperature to react with the oxygen in the chambers (30,32) with minimal simultaneous reaction of the hydrogen to form an intermediate hydrogen rich process stream having a lower carbon monoxide content than the feed stream. The elevated outlet temperature of the process stream is carefully controlled in a second heat exchanger assembly (42) to a second temperature above the first temperature. The process stream is then mixed with a second predetermined quantity of oxygen (air). The carbon monoxide of the process stream preferentially reacts with the second quantity of oxygen in a second stage reaction chamber (56) with minimal simultaneous reaction of the hydrogen in the process stream. The reaction produces a hydrogen rich product stream having a lower carbon monoxide content than the process stream. The product stream is then cooled in a third heat exchanger assembly (72) to a third predetermined temperature. Three or more stages may be desirable, each with metered oxygen injection.

Vanderborgh, Nicholas E. (Los Alamos, NM); Nguyen, Trung V. (College Station, TX); Guante, Jr., Joseph (Denver, CO)

1993-01-01T23:59:59.000Z

95

Chromatin States Accurately Classify Cell Differentiation Stages  

E-Print Network (OSTI)

Gene expression is controlled by the concerted interactions between transcription factors and chromatin regulators. While recent studies have identified global chromatin state changes across cell-types, it remains unclear to what extent these changes are co-regulated during cell-differentiation. Here we present a comprehensive computational analysis by assembling a large dataset containing genome-wide occupancy information of 5 histone modifications in 27 human cell lines (including 24 normal and 3 cancer cell lines) obtained from the public domain, followed by independent analysis at three different representations. We classified the differentiation stage of a cell-type based on its genome-wide pattern of chromatin states, and found that our method was able to identify normal cell lines with nearly 100 % accuracy. We then applied our model to classify the cancer cell lines and found that each can be unequivocally classified as differentiated cells. The differences can be in part explained by the differential activities of three regulatory modules associated with embryonic stem cells. We also found that the ‘‘hotspot’ ’ genes, whose chromatin states change dynamically in accordance to the differentiation stage, are not randomly distributed across the genome but tend to be embedded in multi-gene chromatin

Jessica L. Larson; Guo-cheng Yuan

2012-01-01T23:59:59.000Z

96

Method and apparatus for removing coarse unentrained char particles from the second stage of a two-stage coal gasifier  

DOE Patents (OSTI)

A method and apparatus for removing oversized, unentrained char particles from a two-stage coal gasification process so as to prevent clogging or plugging of the communicating passage between the two gasification stages. In the first stage of the process, recycled process char passes upwardly while reacting with steam and oxygen to yield a first stage synthesis gas containing hydrogen and oxides of carbon. In the second stage, the synthesis gas passes upwardly with coal and steam which react to yield partially gasified char entrained in a second stage product gas containing methane, hydrogen, and oxides of carbon. Agglomerated char particles, which result from caking coal particles in the second stage and are too heavy to be entrained in the second stage product gas, are removed through an outlet in the bottom of the second stage, the particles being separated from smaller char particles by a counter-current of steam injected into the outlet.

Donath, Ernest E. (Christiansted, St. Croix, VI)

1976-01-01T23:59:59.000Z

97

Running fermi with one-stage compressor: advantages, layout, performance  

E-Print Network (OSTI)

Running FERMI with one-stage compressor: advantages, layout,a lattice with one-stage compressor, it was thought at thetime that the two bunch compressors configuration was still

Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

2008-01-01T23:59:59.000Z

98

Next stages in HDR technology development  

DOE Green Energy (OSTI)

Twenty years of research and development have brought HDR heat mining technology from the purely conceptual stage to the establishment of an engineering-scale heat mine at Fenton Hill, NM. In April 1992, a long-term flow test (LTFT) of the HDR reservoir at Fenton Hill was begun. The test was carried out under steady-state conditions on a continuous basis for four months, but a major equipment failure in late July forced a temporary suspension of operations. Even this short test provided valuable information and extremely encouraging results as summarized below: There was no indication of thermal drawdown of the reservoir. There was evidence of increasing access to hot rock with time. Water consumption was in the rangki of 10--12%. Measured pumping costs were $0.003 per kilowatt of energy produced. Temperature logs conducted in the reservoir production zone during and after the flow test confirmed the fact that there was no decline in the average temperature of the fluid being produced from the reservoir. In fact, tracer testing showed that the fluid was taking more indirect pathways and thus contacting a greater amount of hot rock as the test progressed. Water usage quickly dropped to a level of 10--15 gallons per minute, an amount equivalent to about 10--12% of the injected fluid volume. At a conversion rate of 10--15%, these would translate to effective ``fuel costs`` of 2--3{cents} per kilowatt hour of electricity production potential. The completion of the LTFT will set the stage for commercialization of HDR but will not bring HDR technology to maturity. Relatively samples extensions of the current technology may bring significant improvements in efficiency, and these should be rapidly investigated. In the longer run, advanced operational concepts could further improve the efficiency of HDR energy extraction and may even offer the possibility of cogeneration schemes which solve both energy and water problems throughout the world.

Duchane, D.V.

1993-03-01T23:59:59.000Z

99

Virtual stage linked with a physical miniature stage to support multiple users in planning theatrical productions  

Science Conference Proceedings (OSTI)

Theater is a collaborative art form that involves production team members with different specialties. Because theater involves various technical elements, such as stage design and lighting, the production team must work in cooperation among various departments ... Keywords: tabletop interface, tangible interface, theater, virtual space

Yosuke Horiuchi; Tomoo Inoue; Ken-ichi Okada

2012-02-01T23:59:59.000Z

100

Applying advanced simulation in early stage unconventional ship design  

Science Conference Proceedings (OSTI)

A detailed description of the first, or global, optimization stage of two-stage hydrodynamic optimization framework for high-speed vessels is presented. A key feature of the framework is the application of advanced simulation in the early phases of design ... Keywords: early-stage design, high-speed vessel, optimization, ship design, surrogate model

Matthew Collette; Woei-Min Lin; Jun Li

2010-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Stage-to-Stage Comparison of Preoperative and Postoperative Chemoradiotherapy for T3 Mid or Distal Rectal Cancer  

Science Conference Proceedings (OSTI)

Purpose: To investigate, in a comparative analysis, the prognostic implications of postchemoradiotherapy (post-CRT) pathologic stage (ypStage) vs. postoperative pathologic stage (pStage) in rectal cancer. Methods and Materials: Between May 2001 and December 2006, 487 patients with T3 mid or distal rectal cancer were analyzed retrospectively. Concurrent CRT was administered preoperatively (n = 364, 74.7%) or postoperatively (n = 123, 25.3%). The radiation dose was 50.4 Gy in 28 fractions. All patients underwent a total mesorectal excision and received adjuvant chemotherapy. Disease-free survival (DFS) was estimated using the Kaplan-Meier method. Differences in DFS, stratified by ypStage and pStage, were compared using the log-rank test. Results: For surviving patients, the median follow-up period was 68 months (range, 12-105 months). The 5-year local recurrence-free survival rate was not different, at 95.3% and 92.1% in preoperative and postoperative CRT groups, respectively (p = 0.402), but the 5-year distant metastasis-free survival rate was significantly different, at 81.6% (preoperative CRT) vs. 65.4% (postoperative CRT; p = 0.001). The 5-year DFS rate of 78.8% in the preoperative CRT group was significantly better than the 63.0% rate in the postoperative CRT group (p = 0.002). Post-CRT pathologic Stage 0-I occurred in 42.6% (155 of 364) of the patients with preoperative CRT. The 5-year DFS rates were 90.2% (ypStage 0-I), 83.5% (ypStage II), 77.3% (pStage II), 58.6% (ypStage III), and 54.7% (pStage III). The DFS rate of ypStage 0-I was significantly better than that of ypStage II or pStage II. Post-CRT pathologic Stage II and III had similar DFS, compared with pStage II and III, respectively. Conclusions: Disease-free survival predicted by each ypStage was similar to that predicted by the respective pStage. Improved DFS with preoperative vs. postoperative CRT was associated with the ypStage 0-I group that showed a similarly favorable outcome to pStage I rectal cancer.

Yeo, Seung-Gu [Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang (Korea, Republic of); Department of Radiation Oncology, Soonchunhyang University College of Medicine, Cheonan (Korea, Republic of); Kim, Dae Yong, E-mail: radiopiakim@hanmail.net [Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang (Korea, Republic of); Park, Ji Won; Choi, Hyo Seong; Oh, Jae Hwan; Kim, Sun Young; Chang, Hee Jin; Kim, Tae Hyun; Sohn, Dae Kyung [Center for Colorectal Cancer, Research Institute and Hospital, National Cancer Center, Goyang (Korea, Republic of)

2012-02-01T23:59:59.000Z

102

EA-0688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, 688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas EA-0688: Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas SUMMARY This EA evaluates the environmental impacts of a proposal to construct the Hazardous Waste Staging Facility that would help to alleviate capacity problems as well as provide a single compliant facility to stage wastes at the U.S. Department of Energy's Pantex Plant in Amarillo, Texas. PUBLIC COMMENT OPPORTUNITIES None available at this time. DOCUMENTS AVAILABLE FOR DOWNLOAD January 29, 1993 EA-0688: Finding of No Significant Impact Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas January 29, 1993 EA-0688: Final Environmental Assessment Hazardous Waste Staging Facility, Pantex Plant, Amarillo, Texas

103

New and Underutilized Technology: Multi-stage Indirect Evaporative Cooling  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Multi-stage Indirect Evaporative Multi-stage Indirect Evaporative Cooling New and Underutilized Technology: Multi-stage Indirect Evaporative Cooling October 4, 2013 - 4:33pm Addthis The following information outlines key deployment considerations for multi-stage evaporative cooling within the Federal sector. Benefits Multi-stage indirect evaporative cooling is an advanced evaporative cooler that can lower air temperatures without adding moisture. These systems evaporate water in a secondary (or working) airstream, which is discharged in multiple stages. No water or humidity is added to the primary (or product) airstream in the process. Application Multi-stage indirect evaporative cooling is applicable in office, research and development, service, and school applications. Climate and Regional Considerations

104

Optical design of the National Ignition Facility main laser and switchyard/target area beam transport system  

SciTech Connect

The optical design of the main laser and transport mirror sections of the National Ignition Facility are described. For the main laser the configuration, layout constraints, multiple beam arrangement, pinhole layout and beam paths, clear aperture budget, ray trace models, alignment constraints, lens designs, wavefront performance, and pupil aberrations are discussed. For the transport mirror system the layout, alignment controls and clear aperture budget are describe

English, R E; Korniski, R J; Miller, J L; Rodgers, J M

1998-06-26T23:59:59.000Z

105

CX-002446: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2446: Categorical Exclusion Determination 2446: Categorical Exclusion Determination CX-002446: Categorical Exclusion Determination Green Mountain Switchyard Stage 06 Spring 2010 CX(s) Applied: B4.6, B4.11 Date: 05/25/2010 Location(s): Colorado Office(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration proposes to install a new control building and a relay and control system and associated equipment at Green Mountain Switchyard, which is located on Bureau of Reclamation land, at Green Mountain Dam, in Summit County, Colorado (Township 2 South, Range 80 West, Section 15; King Creek 7.5' United States Geological Survey quadrangle map). All proposed construction and installation will occur at the existing, disturbed switchyard facilities. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

106

Staging Effects on Catalyst Deactivation with Powder River Basin Coal  

Science Conference Proceedings (OSTI)

The objectives of the current study were to investigate cost benefits or disadvantages resulting from operating Powder River Basin (PRB-) fired boilers at different combustion staging levels. The study's inherent assumption is that increased staging levels increases catalyst deactivation, requiring less ammonia consumption at the selective catalytic reduction (SCR) unit but more catalyst replacement events. The program sought to evaluate the impacts of staging on total SCR operation and maintenance (OM) ...

2010-11-10T23:59:59.000Z

107

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2006-05-09T23:59:59.000Z

108

Staged combustion with piston engine and turbine engine supercharger  

DOE Patents (OSTI)

A combustion engine method and system provides increased fuel efficiency and reduces polluting exhaust emissions by burning fuel in a two-stage combustion system. Fuel is combusted in a piston engine in a first stage producing piston engine exhaust gases. Fuel contained in the piston engine exhaust gases is combusted in a second stage turbine engine. Turbine engine exhaust gases are used to supercharge the piston engine.

Fischer, Larry E. (Los Gatos, CA); Anderson, Brian L. (Lodi, CA); O' Brien, Kevin C. (San Ramon, CA)

2011-11-01T23:59:59.000Z

109

Multi-stage Stochastic Linear Programming: Scenarios Versus Events  

E-Print Network (OSTI)

Manufacturing and service operations management, 4(3):171–207, 2002. [4] A. Berkelaar ... Multi-stage stochastic optimization applied to energy planning.

110

Proposal for the construction of the staged Scyllac prototype  

SciTech Connect

After the completion of the present feedback experiment on Scyllac, the machine will be reconfigured into a toroidal staged theta pinch. A 0.9-m prototype of the Staged Scyllac experiment is proposed which will be used to test the components required for the implosion-heating and staging circuits in a system environment. In addition, various systems of the Staged Scyllac, such as the trigger system and the gap-monitoring system, can be developed on the prototype before installation on the full experiment. (auth)

Nunnally, W.C.; McDonald, T.E.

1975-07-01T23:59:59.000Z

111

Clean Energy Finance: Challenges and Opportunities of Early-Stage...  

NLE Websites -- All DOE Office Websites (Extended Search)

2 Executive Summary Clean Energy Finance-Challenges and Opportunities of Early-Stage Energy Investing - Executive Summary NREL Industry Growth Forum The premier event for clean...

112

Clean Energy Finance: Challenges and Opportunities of Early-Stage...  

NLE Websites -- All DOE Office Websites (Extended Search)

1 Clean Energy Finance-Challenges and Opportunities of Early-Stage Energy Investing Disclaimer: the analysis and recommendations presented are solely those of the researchers...

113

A Two Stage Stochastic Equilibrium Model for Electricity Markets ...  

E-Print Network (OSTI)

Feb 6, 2008 ... A Two Stage Stochastic Equilibrium Model for Electricity Markets with Two ... Price and Woods [10] for a duopoly market to an oligopoly market.

114

On Robust Optimization of Two-Stage Systems  

E-Print Network (OSTI)

Feb 20, 2001 ... additional capacity in a power plant in response to uncertain future demand. Their second-stage decision—future production of power—is not ...

115

Simultaneous specimen and stage cleaning device for analytical electron microscope  

DOE Patents (OSTI)

An improved method and apparatus are provided for cleaning both a specimen stage, a specimen and an interior of an analytical electron microscope (AEM). The apparatus for cleaning a specimen stage and specimen comprising a plasma chamber for containing a gas plasma and an air lock coupled to the plasma chamber for permitting passage of the specimen stage and specimen into the plasma chamber and maintaining an airtight chamber. The specimen stage and specimen are subjected to a reactive plasma gas that is either DC or RF excited. The apparatus can be mounted on the analytical electron microscope (AEM) for cleaning the interior of the microscope.

Zaluzec, Nestor J. (Bolingbrook, IL)

1996-01-01T23:59:59.000Z

116

Multi-stage combustion using nitrogen-enriched air - Energy ...  

Multi-stage combustion technology combined with nitrogen-enriched air technology for controlling the combustion temperature and products to extend the maintenance and ...

117

Residential Two-Stage Gas Furnaces - Do They Save Energy?  

E-Print Network (OSTI)

Method for Measuring the Energy Consumption of Furnaces andcalculating the energy consumption of two-stage furnaces.residential gas furnace energy consumption in the DOE test

Lekov, Alex; Franco, Victor; Lutz, James

2006-01-01T23:59:59.000Z

118

DOE Systems Engineering Methodology (SEM): Stage Exit V3 | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(SDLC) used for information systems developed and maintained for the Department Of Energy DOE Systems Engineering Methodology (SEM): Stage Exit V3 More Documents &...

119

The 'Watcher's Stage' in Lower Colorado River Indian Agriculture  

E-Print Network (OSTI)

Primitive Subsistence on the Lower Colorado and Gila Rivers.Watcher's Stage' in Lower Colorado River Indian AgricultureIndian tribes along the Colorado River to various interior

Lawton, Harry W.; Wilke, Philip J.

1977-01-01T23:59:59.000Z

120

Optimization Online - Solving Two-stage Robust Optimization ...  

E-Print Network (OSTI)

Jun 15, 2011 ... A computational study on a two-stage robust location-transportation problem shows that it performs an order of magnitude faster. Also, it reveals ...

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Lithium intercalated graphite : experimental Compton profile for stage one  

E-Print Network (OSTI)

L-301 Lithium intercalated graphite : experimental Compton profile for stage one G. Loupias, J différence des profils Compton est compatible avec un transfert total de l'électron de conduction du lithium électronique due à l'insertion. Abstract. 2014 Electron momentum distribution of the first stage lithium

Paris-Sud XI, Université de

122

Two stage emotion recognition based on speaking rate  

Science Conference Proceedings (OSTI)

This paper proposes two stage speech emotion recognition approach using speaking rate. The emotions considered in this study are anger, disgust, fear, happy, neutral, sadness, sarcastic and surprise. At the first stage, based on speaking rate, eight ... Keywords: Active emotions, Emotion categorization, Fast speech, Formant features, Gaussian mixture models, Normal emotions, Normal speech, Passive emotions, Prosodic features, Slow speech, Speaking rate

Shashidhar G. Koolagudi; Rao Sreenivasa Krothapalli

2011-03-01T23:59:59.000Z

123

Model Development for Atomic Force Microscope Stage Mechanisms  

E-Print Network (OSTI)

Model Development for Atomic Force Microscope Stage Mechanisms Ralph C. Smith and Andrew G. Hatch of the Philippines Virginia Commonwealth University Diliman, Quezon City 1101 Richmond VA 23284 rcdelros titanate (PZT) devices employed in atomic force microscope stage mechanisms. We focus specifically on PZT

124

Unsteady Loss in a High Pressure Turbine Stage  

E-Print Network (OSTI)

The widespread use of the gas turbine as a means of aircraft propulsion has provided a considerable impetusUnsteady Loss in a High Pressure Turbine Stage Stephen John Payne Trinity College A thesis in a High Pressure Turbine Stage Stephen John Payne Trinity College A thesis submitted in partial fulfilment

Payne, Stephen J.

125

CX-010883: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

PHX-LOB and LIB-LOB 230-Kilovolt Double-Circuit- Replace Insulators at Structure No. 28-2 With NCI Type Polymers CX(s) Applied: B1.3 Date: 08/12/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

126

CX-008787: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Midway Substation 230 Kilovolt Upgrades El Paso County, Colorado CX(s) Applied: B4.6, B4.11 Date: 07/25/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

127

CX-009231: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Danger Tree Management on Curecanti to North Fork 230 Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 09/13/2012 Location(s): Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

128

CX-009232: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Danger Tree Management on North Fork to Rifle 230 Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 09/13/2012 Location(s): Colorado, Colorado, Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region

129

CX-008783: Categorical Exclusion Determination  

Energy.gov (U.S. Department of Energy (DOE))

Fiber Optic Installation at the Stegall 230 Kilovolt Substation Scotts Bluff County, Nebraska CX(s) Applied: B4.7 Date: 06/20/2012 Location(s): Nebraska Offices(s): Western Area Power Administration-Rocky Mountain Region

130

Influence of magnetic field strength on potential well in the ionization stage of a double stage Hall thruster  

Science Conference Proceedings (OSTI)

Similar to a single stage Hall thruster, the magnetic field, which controls electron trajectory and electric field distribution, is the most important factor determining the performance of a double stage Hall thruster. Especially, a potential well, which is helpful to reduce the ion loss on the thruster walls, is shaped in the ionization stage due to the existence of an annular magnetic field topology there. In this paper, the influence of magnetic field strength in the ionization stage on the potential well is researched with both experiments and particle-in-cell simulations. It is found that the depth of potential well increases with the magnetic field strength as a result of enhanced magnetic confinement and lowered electron conductivity. Consequently, the plasma density as well as the ion current entering the acceleration stage increases. However, an excessive magnetic field strength leads to an excess of ion loss on the walls of the acceleration stage. Therefore, there is an appropriate magnetic field strength in the ionization stage that results in a proper potential well and consequently an optimal performance of a double stage Hall thruster.

Yu Daren; Song Maojiang; Liu Hui; Zhang Xu; Li Hong [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

2012-07-15T23:59:59.000Z

131

Bryan Mound SPR cavern 113 remedial leach stage 1 analysis.  

SciTech Connect

The U.S. Strategic Petroleum Reserve implemented the first stage of a leach plan in 2011-2012 to expand storage volume in the existing Bryan Mound 113 cavern from a starting volume of 7.4 million barrels (MMB) to its design volume of 11.2 MMB. The first stage was terminated several months earlier than expected in August, 2012, as the upper section of the leach zone expanded outward more quickly than design. The oil-brine interface was then re-positioned with the intent to resume leaching in the second stage configuration. This report evaluates the as-built configuration of the cavern at the end of the first stage, and recommends changes to the second stage plan in order to accommodate for the variance between the first stage plan and the as-built cavern. SANSMIC leach code simulations are presented and compared with sonar surveys in order to aid in the analysis and offer projections of likely outcomes from the revised plan for the second stage leach.

Rudeen, David Keith [GRAM, Inc., Albuquerque, NM; Weber, Paula D.; Lord, David L.

2013-08-01T23:59:59.000Z

132

Resilient data staging through MxN distributed transactions.  

Science Conference Proceedings (OSTI)

Scientific computing-driven discoveries are frequently driven from workflows that use persistent storage as a staging area for data between operations. With the bad and progressively worse bandwidth vs. data size issues as we continue towards exascale, eliminating persistent storage through techniques like data staging will both enable these workflows to continue online, but also enable more interactive workflows reducing the time to scientific discoveries. Data staging has shown to be an effective way for applications running on high-end computing platforms to offload expensive I/O operations and to manage the tremendous amounts of data they produce. This data staging approach, however, lacks the ACID style guarantees traditional straight-to-disk methods provide. Distributed transactions are a proven way to add ACID properties to data movements, however distributed transactions follow 1xN data movement semantics, where our highly parallel HPC environments employ MxN data movement semantics. In this paper we present a novel protocol that extends distributed transaction terminology to include MxN semantics which allows our data staging areas to benefit from ACID properties. We show that with our protocol we can provide resilient data staging with a limited performance penalty over current data staging implementations.

Schwan, Karsten (Georgia Institute of Technology, Atlanta, GA); Oldfield, Ron A.; Lofstead, Gerald Fredrick, II; Dayal, Jai (Georgia Institute of Technology, Atlanta, GA)

2011-11-01T23:59:59.000Z

133

Residential Two-Stage Gas Furnaces - Do They Save Energy?  

SciTech Connect

Residential two-stage gas furnaces account for almost a quarter of the total number of models listed in the March 2005 GAMA directory of equipment certified for sale in the United States. Two-stage furnaces are expanding their presence in the market mostly because they meet consumer expectations for improved comfort. Currently, the U.S. Department of Energy (DOE) test procedure serves as the method for reporting furnace total fuel and electricity consumption under laboratory conditions. In 2006, American Society of Heating Refrigeration and Air-conditioning Engineers (ASHRAE) proposed an update to its test procedure which corrects some of the discrepancies found in the DOE test procedure and provides an improved methodology for calculating the energy consumption of two-stage furnaces. The objectives of this paper are to explore the differences in the methods for calculating two-stage residential gas furnace energy consumption in the DOE test procedure and in the 2006 ASHRAE test procedure and to compare test results to research results from field tests. Overall, the DOE test procedure shows a reduction in the total site energy consumption of about 3 percent for two-stage compared to single-stage furnaces at the same efficiency level. In contrast, the 2006 ASHRAE test procedure shows almost no difference in the total site energy consumption. The 2006 ASHRAE test procedure appears to provide a better methodology for calculating the energy consumption of two-stage furnaces. The results indicate that, although two-stage technology by itself does not save site energy, the combination of two-stage furnaces with BPM motors provides electricity savings, which are confirmed by field studies.

Lekov, Alex; Franco, Victor; Lutz, James

2006-05-12T23:59:59.000Z

134

Stage 1: Organizing the LEDS Process | Open Energy Information  

Open Energy Info (EERE)

Stage 1: Organizing the LEDS Process Stage 1: Organizing the LEDS Process (Redirected from Low Emission Development Strategies Methodology) Jump to: navigation, search Stage 1 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other

135

Stage 4: Prioritizing and Planning for Actions | Open Energy Information  

Open Energy Info (EERE)

Stage 4: Prioritizing and Planning for Actions Stage 4: Prioritizing and Planning for Actions Jump to: navigation, search Stage 4 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other economic and resource data as needed for LEDS development

136

Return channel loss reduction in multi-stage centrifugal compressors  

E-Print Network (OSTI)

This thesis presents concepts for improving the performance of return channels in multi-stage centrifugal compressors. Geometries have been developed to reduce both separation and viscous losses. A number of different ...

Aubry, Anne-Raphaëlle

2012-01-01T23:59:59.000Z

137

Solving Two-stage Robust Optimization Problems by A Constraint ...  

E-Print Network (OSTI)

portfolio optimization [15] and power system control and scheduling [18, 12, 9]. However, 2-stage RO ..... The price of robustness. Operations Research ... Robust unit commitment problem with demand response and wind energy. Technical ...

138

Environmental assessment for the National Conversion Pilot Project, Stage 3  

Science Conference Proceedings (OSTI)

The purpose of the National Conversion Pilot Project (NCPP) is to explore and demonstrate, at the Rocky Flats Environmental Technology Site (RFETS), the feasibility of economic conversion at Department of Energy facilities. Economic conversion is the conversion of facilities and equipment owned by the Federal government to production of goods by private firms for profit. The NCPP mission is consistent with the RFETS current mission: to conduct site remediation, decontaminate and decommission site buildings and close the site in a manner that is safe, environmentally and socially responsible, physically secure, and cost effective. The NCPP is divided into three stages, with decision points at the ends of Stages 1 and 2 and periodically during Stage 3, to help ensure careful consideration of project effectiveness and to create an opportunity for regulators and stakeholders to provide comments to the DOE. At the end of each stage, the project can be reversed, authorized to proceed, or terminated.

NONE

1997-06-11T23:59:59.000Z

139

Multi-stage Stochastic Linear Programming: An Approach by Events  

E-Print Network (OSTI)

Jul 28, 2008 ... investor problem [4], whose objective consists of obtaining an investment policy which maximizes the utility of the ...... C05-05 from the Spanish government. References ... Multi-stage stochastic optimization applied to energy.

140

Span-Wise Mixing in a Multi-Stage Compressor  

NLE Websites -- All DOE Office Websites (Extended Search)

SPAN-WISE MIXING IN A MULTI-STAGE COMPRESSOR SPAN-WISE MIXING IN A MULTI-STAGE COMPRESSOR Penn State Bud Lakshminarayana (Cengiz Camci) #036 * Phenomena that have eluded gas turbine designers include the effects of rotor-stator interactions and the physics of mixing of velocity, pressure, temperature and velocity fields. * Compressor tests were conducted in a three stage compressor where deterministic unsteadiness and random fluctuations causing spanwise mixing are realistically replicated . This provided valuable information on rotor stator interaction effects and the nature of the unsteadiness. * Multi-stage compressor energy efficiency improvements are only possible by careful implementation of spanwise mixing models into modern CFD codes (Computational Fluid Dynamics) . *This investigation provided results that are extremely helpful in improving computer

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Stage 3c: Developing and Assessing Low Emissions Development Scenarios |  

Open Energy Info (EERE)

Stage 3c: Developing and Assessing Low Emissions Development Scenarios Stage 3c: Developing and Assessing Low Emissions Development Scenarios Jump to: navigation, search Stage 3 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other

142

Mathematical Study of a Staged-Progression HIV Model with ...  

Science Conference Proceedings (OSTI)

uninfected individuals entering the high-risk population. The model monitors ... infection stage). The term ?(N)(I1 + ?2 I2 + ?3 I3) thus gives the total force of in-.

143

Unconventional Staging Package Selection Leads to Cost Savings  

SciTech Connect

In late 2010, U.S. Department of Energy (DOE) Deputy Secretary of Energy, Daniel Poneman, directed that an analysis be conducted on the U-233 steel-clad, Zero Power Reactor (ZPR) fuel plates that were stored at Oak Ridge National Laboratory (ORNL), focusing on cost savings and any potential DOE programmatic needs for the special nuclear material (SNM). The NA-162 Nuclear Criticality Safety Program requested retention of these fuel plates for use in experiments at the Nevada National Security Site (NNSS). A Secretarial Initiative challenged ORNL to make the first shipment to the NNSS by the end of the 2011 calendar year, and this effort became known as the U-233 Project Accelerated Shipping Campaign. To meet the Secretarial Initiative, National Security Technologies, LLC (NSTec), the NNSS Management and Operations contractor, was asked to facilitate the receipt and staging of the U-233 fuel plates in the Device Assembly Facility (DAF). Because there were insufficient staging containers available for the fuel plates, NSTec conducted an analysis of alternatives. The project required a staging method that would reduce the staging footprint while addressing nuclear criticality safety and radiation exposure concerns. To accommodate an intermediate staging method of approximately five years, the NSTec project team determined that a unique and unconventional staging package, the AT-400R, was available to meet the project requirements. By using the AT-400R containers, NSTec was able to realize a cost savings of approximately $10K per container, a total cost savings of nearly $450K.

,

2012-06-07T23:59:59.000Z

144

A staged fluidized-bed comubstion and filter system  

DOE Patents (OSTI)

A staged fluidized-bed combustion and filter system for substantially reducing the quantity of waste through the complete combustion into ash-type solids and gaseous products. The device has two fluidized- bed portions, the first primarily as a combustor/pyrolyzer bed, and the second as a combustor/filter bed. The two portions each have internal baffles to define stages so that material moving therein as fluidized beds travel in an extended route through those stages. Fluidization and movement is achieved by the introduction of gasses into each stage through a directional nozzle. Gases produced in the combustor/pyrolyzer bed are permitted to travel into corresponding stages of the combustor/filter bed through screen filters that permit gas flow but inhibit solids flow. Any catalyst used in the combustor/filter bed is recycled. The two beds share a common wall to minimize total volume of the system. A slightly modified embodiment can be used for hot gas desulfurization and sorbent regeneration. Either side-by-side rectangular beds or concentric beds can be used. The system is particularly suited to the processing of radioactive and chemically hazardous waste.

Mei, J.S.; Halow, J.S.

1993-12-31T23:59:59.000Z

145

Stage 3a: Developing BAU Scenario | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Stage 3a: Developing BAU Scenario Jump to: navigation, search Stage 3 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country

146

Direct Refrigeration from Heat Recovery Using 2-Stage Absorption Chillers  

E-Print Network (OSTI)

Although the cost of some fossil fuels has moderated, the importance of energy conservation by heat recovery has not diminished. The application of waste heat generated steam to produce chilled water is not new. However, there is a newly developed absorption chiller which can produce chilled water 44% more efficiently than the conventional single stage absorption chillers. The new 2-stage parallel flow system makes the chiller package more compact, more efficient, and easier to operate. Many types of waste heat, not just steam, can be used directly in this new chiller without the need for costly recovery and conversion systems.

Hufford, P. E.

1983-01-01T23:59:59.000Z

147

Two stage constraint based hybrid approach to free word order language dependency parsing  

Science Conference Proceedings (OSTI)

The paper describes the overall design of a new two stage constraint based hybrid approach to dependency parsing. We define the two stages and show how different grammatical construct are parsed at appropriate stages. This division leads to selective ...

Akshar Bharati; Samar Husain; Dipti Misra; Rajeev Sangal

2009-10-01T23:59:59.000Z

148

Application of a design optimization strategy to multi-stage compressor matching.  

E-Print Network (OSTI)

??A major challenge in the design of multi-stage compressors is the matching of stages to enable stable operation over a large range of mass flows… (more)

Bert, Jérôme

2006-01-01T23:59:59.000Z

149

Optimisation of the Transesterification Stage of Biodiesel Production using statistical methods.  

E-Print Network (OSTI)

??The present research examines solely the transesterification stage of the biodiesel production process. Six process variables that affect the yield of biodiesel at this stage… (more)

Paintsil, Arnold

2013-01-01T23:59:59.000Z

150

DataStager: scalable data staging services for petascale applications  

Science Conference Proceedings (OSTI)

Known challenges for petascale machines are that (1) the costs of I/O for high performance applications can be substantial, especially for output tasks like checkpointing, and (2) noise from I/O actions can inject undesirable delays into the runtimes ... Keywords: datatap, gtc, i/o, staging, warp, xt3, xt4

Hasan Abbasi; Matthew Wolf; Greg Eisenhauer; Scott Klasky; Karsten Schwan; Fang Zheng

2009-06-01T23:59:59.000Z

151

Aerodynamic performance measurements of a film-cooled turbine stage  

E-Print Network (OSTI)

The goal of this research is to measure the aerodynamic performance of a film-cooled turbine stage and to quantify the loss caused by film-cooling. A secondary goal of the research is to provide a detailed breakdown of the ...

Keogh, Rory (Rory Colm), 1968-

2001-01-01T23:59:59.000Z

152

SCIENCE ON STAGE TOWARDS A REJUVENATED SCIENCE TEACHING  

E-Print Network (OSTI)

SCIENCE ON STAGE ­ TOWARDS A REJUVENATED SCIENCE TEACHING IN EUROPE Claus Madsen ESO, Karl as every-day experience of many science teachers sug- gest a `disconnect' between the tenants of traditional, formal science teaching and contemporary youth culture. Clearly formal science teaching fails

Madsen, Claus

153

A novel technique of recognising multi-stage attack behaviour  

Science Conference Proceedings (OSTI)

With the increasing amount of security audit data, management and analysis of it become a critical and challenging issue. Security alerts and threat analysis project (SATA) aims at analysing security events and detecting security threat. In this ... Keywords: attack plan recognition, correlativity, intrusion detection, multi-stage attacks, security alerts, security threats, threat analysis

Li Wang; Yao Li; Zhi-tang Li

2010-12-01T23:59:59.000Z

154

MASTER'S PROJECT NONPARAMETRIC SURVEY REGRESSION ESTIMATION IN TWO-STAGE  

E-Print Network (OSTI)

Northeastern Lakes Survey. Siobhan Everson-Stewart Statistics Department Colorado State University Fort Collins data, aerial pho- tographs, or other sources. In a common survey situation, a statistical agency, oftenMASTER'S PROJECT NONPARAMETRIC SURVEY REGRESSION ESTIMATION IN TWO-STAGE SPATIAL SAMPLING Submitted

155

Using active NVRAM for I/O staging  

Science Conference Proceedings (OSTI)

With HPC machines moving to the exascale, scaling the I/O performance of applications is a well known problem. Also, a closely related problem is, how to efficiently analyze and extract useful information from I/O data, viz. data post processing. With ... Keywords: DataStaging, non-volatile memory, post processing

Sudarsun Kannan; Ada Gavrilovska; Karsten Schwan; Dejan Milojicic; Vanish Talwar

2011-11-01T23:59:59.000Z

156

Two-stage coal gasification and desulfurization apparatus  

DOE Patents (OSTI)

The present invention is directed to a system which effectively integrates a two-stage, fixed-bed coal gasification arrangement with hot fuel gas desulfurization of a first stream of fuel gas from a lower stage of the two-stage gasifier and the removal of sulfur from the sulfur sorbent regeneration gas utilized in the fuel-gas desulfurization process by burning a second stream of fuel gas from the upper stage of the gasifier in a combustion device in the presence of calcium-containing material. The second stream of fuel gas is taken from above the fixed bed in the coal gasifier and is laden with ammonia, tar and sulfur values. This second stream of fuel gas is burned in the presence of excess air to provide heat energy sufficient to effect a calcium-sulfur compound forming reaction between the calcium-containing material and sulfur values carried by the regeneration gas and the second stream of fuel gas. Any ammonia values present in the fuel gas are decomposed during the combustion of the fuel gas in the combustion chamber. The substantially sulfur-free products of combustion may then be combined with the desulfurized fuel gas for providing a combustible fluid utilized for driving a prime mover.

Bissett, Larry A. (Morgantown, WV); Strickland, Larry D. (Morgantown, WV)

1991-01-01T23:59:59.000Z

157

Guidance Concept for a Mars Ascent Vehicle First Stage  

Science Conference Proceedings (OSTI)

This paper presents a guidance concept for use on the first stage of a Mars Ascent Vehicle (MAV). The guidance is based on a calculus of variations approach similar to that used for the final phase of the Apollo Earth return.

Queen Eric M.

2000-11-01T23:59:59.000Z

158

Staging and storage facility feasibility study. Final report  

SciTech Connect

This study was performed to investigate the feasibility of adapting the design of the HWVP Canister Storage Building (CSB) to meet the needs of the WHC Spent Nuclear Fuel Project for Staging and Storage Facility (SSF), and to develop Rough Order of Magnitude (ROM) cost and schedule estimates.

Swenson, C.E. [Westinghouse Hanford Co., Richland, WA (United States)

1995-02-01T23:59:59.000Z

159

STATE OF CALIFORNIA QUALITY INSULATION INSTALLATION FRAMING STAGE CHECKLIST  

E-Print Network (OSTI)

be accepted by the building department or HERS rater. SPF insulation can be considered an air barrier when be insulated. These areas shall be called out on the building plans with diagrams and/or specific designSTATE OF CALIFORNIA QUALITY INSULATION INSTALLATION ­ FRAMING STAGE CHECKLIST CEC-CF-4R-ENV-21

160

Categorical Exclusion (CX) Determination Proposed Action: Havre Substation, Stage 03.  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Havre Substation, Stage 03. Havre Substation, Stage 03. Description of Proposed Action: The Western Area Power Administration (Western) is proposing to expand the Havre Substation approximately 150 ft to the north to accommodate a new delivery service from the newly built Herron Substation by Hill County. The expansion also converts the existing 115-kV single bus into a ring bus which will improve reliability. Western is also expanding the yard to the east to accommodate the replacement of the existing control building and control boards. Number and Title of Categorical Exclusions Being Applied: 10 CFR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations .. . or modification of existing substations and support facilities . Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Stage 3b: Assessing Opportunities | Open Energy Information  

Open Energy Info (EERE)

b: Assessing Opportunities b: Assessing Opportunities Jump to: navigation, search Stage 3b LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other economic and resource data as needed for LEDS development

162

Stage 1: Organizing the LEDS Process | Open Energy Information  

Open Energy Info (EERE)

: Organizing the LEDS Process : Organizing the LEDS Process Jump to: navigation, search Stage 1 LEDS Home Introduction to Framework Assess current country plans, policies, practices, and capacities Develop_BAU Stage 4: Prioritizing and Planning for Actions Begin execution of implementation plans 1.0. Organizing the LEDS Process 1.1. Institutional Structure for LEDS 1.2. Workplan to Develop the LEDS 1.3. Roles and responsibilities to develop LEDS 2.1. Assess current country plans, policies, practices, and capacities 2.2. Compile lessons learned and good practices from ongoing and previous sustainable development efforts in the country 2.3. Assess public and private sector capacity to support initiatives 2.4. Assess and improve the national GHG inventory and other economic and resource data as needed for LEDS development

163

Statistical Methods and Tools for Hanford Staged Feed Tank Sampling  

SciTech Connect

This report summarizes work conducted by Pacific Northwest National Laboratory to technically evaluate the current approach to staged feed sampling of high-level waste (HLW) sludge to meet waste acceptance criteria (WAC) for transfer from tank farms to the Hanford Waste Treatment and Immobilization Plant (WTP). The current sampling and analysis approach is detailed in the document titled Initial Data Quality Objectives for WTP Feed Acceptance Criteria, 24590-WTP-RPT-MGT-11-014, Revision 0 (Arakali et al. 2011). The goal of this current work is to evaluate and provide recommendations to support a defensible, technical and statistical basis for the staged feed sampling approach that meets WAC data quality objectives (DQOs).

Fountain, Matthew S.; Brigantic, Robert T.; Peterson, Reid A.

2013-10-01T23:59:59.000Z

164

Thirty Stage Annular Centrifugal Contactor Thermal Profile Measurements  

Science Conference Proceedings (OSTI)

A thirty stage 5 cm annular centrifugal contactor cascade has been assembled and tested to obtain thermal profiles during both ambient and heated input conditions of operation. Thermocouples were installed on every stage as well as feed inputs and Real-time data was taken during experiments lasting from two to eight hours at total flow rates of 0.5 to 1.4 liters per minute. Ambient temperature profile results show that only a small amount of heat is generated by the mechanical energy of the contactors. Steady state temperature profiles mimic the ambient temperature of the lab but are higher toward the middle of the cascade. Heated inlet solutions gave temperature profiles with smaller temperature gradients, more driven by the temperature of the inlet solutions than ambient lab temperature. Temperature effects of solution mixing, even at rotor speeds of 4000 rpm, were not measurable.

David H. Meikrantz; Troy G. Garn; Jack D. Law

2010-02-01T23:59:59.000Z

165

Two-stage dilute acid prehydrolysis of biomass  

DOE Patents (OSTI)

The invention relates to a two stage dilute acid prehydrolysis of biomass for solubilization of hemicellulosic sugars and a pretreatment for enzymatic hydrolysis of cellulose. In particular, the invention pertains to a two stage dilute acid prehydrolysis treatment of a feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under low temperature conditions to hydrolyze said fast hydrolyzable xylan to xylose; removing said xylose and leaving a feedstock residue containing said slow hydrolyzable xylan; treating said residue containing said slow hydrolyzable xylan with a dilute organic or inorganic acid under temperature conditions higher than said low temperature conditions to hydrolyze said slow hydrolyzable xylan to xylose, and removing said xylose.

Grohmann, K.; Torget, R.W.

1991-04-08T23:59:59.000Z

166

Competitive and Cooperative Inventory Policies in a Two-Stage Supply Chain  

Science Conference Proceedings (OSTI)

We investigate a two-stage serial supply chain with stationary stochastic demand and fixed transportation times. Inventory holding costs are charged at each stage, and each stage may incur a consumer backorder penalty cost, e.g. the upper stage (the ... Keywords: Game Theory, Incentive Contracts, Multiechelon Inventory, Supply Chain

Gérard P. Cachon; Paul H. Zipkin

1999-07-01T23:59:59.000Z

167

Multi-stage depressed collector for small orbit gyrotrons  

DOE Patents (OSTI)

A multi-stage depressed collector for receiving energy from a small orbit gyrating electron beam employs a plurality of electrodes at different potentials for sorting the individual electrons on the basis of their total energy level. Magnetic field generating coils, for producing magnetic fields and magnetic iron for magnetic field shaping produce adiabatic and controlled non-adiabatic transitions of the incident electron beam to further facilitate the sorting.

Singh, Amarjit (Greenbelt, MD); Ives, R. Lawrence (Saratoga, CA); Schumacher, Richard V. (Campbell, CA); Mizuhara, Yosuke M. (Palo Alto, CA)

1998-01-01T23:59:59.000Z

168

Single stage anaerobic digester at Tarleton State University. Final report  

DOE Green Energy (OSTI)

The design and operation of the demonstration plant facilities at Tarleton State University to produce methane in a single stage anaerobic digester are described. A combination of manures from hogs and poultry are used as feedstock. Uses for the methane, cost of the digester, and value of the energy produced are discussed. During the 21 months of operation, 310 people have visited the project. (DMC)

Not Available

1980-01-01T23:59:59.000Z

169

Aerothermal Analysis of LM6000 Stage 2 Nozzle Durability  

Science Conference Proceedings (OSTI)

This report is a segment in an ongoing series of life-management studies for turbine hot-section components. It presents the results of an aerothermal analysis of a 2nd-stage high-pressure turbine (HPT) nozzle of a GE LM6000 aeroderivative gas turbine. It describes the application of the Hot-Section Life-Management Platform (HSLMP) and the temperatures and stress that occur in the nozzle during normal baseload operation.

2011-12-13T23:59:59.000Z

170

Multi-stage, isothermal CO preferential oxidation reactor  

DOE Patents (OSTI)

A multi-stage, isothermal, carbon monoxide preferential oxidation (PrOx) reactor comprising a plurality of serially arranged, catalyzed heat exchangers, each separated from the next by a mixing chamber for homogenizing the gases exiting one heat exchanger and entering the next. In a preferred embodiment, at least some of the air used in the PrOx reaction is injected directly into the mixing chamber between the catalyzed heat exchangers.

Skala, Glenn William (Churchville, NY); Brundage, Mark A. (Pittsford, NY); Borup, Rodney Lynn (East Rochester, NY); Pettit, William Henry (Rochester, NY); Stukey, Kevin (W. Henrietta, NY); Hart-Predmore, David James (Rochester, NY); Fairchok, Joel (Alexander, NY)

2000-01-01T23:59:59.000Z

171

High-resolution, cryogenic, side-entry type specimen stage  

DOE Patents (OSTI)

A high-resolution, cryogenic side-entry type specimen stage includes a copper block within which a specimen can be positioned in the electron beam of an electron microscope, one end of the copper block constituting a specimen heat exchanger, means for directing a flow of helium at cryogenic temperature into the heat exchanger, and electrical leads running from the specimen to the exterior of the microscope for four point D.C. electrical resistivity measurements.

King, Wayne E. (Woodridge, IL); Merkle, Karl L. (Clarendon Hills, IL)

1979-01-01T23:59:59.000Z

172

Idaho Site's Cold War Cleanup Takes Center Stage in Publication |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Site's Cold War Cleanup Takes Center Stage in Publication Site's Cold War Cleanup Takes Center Stage in Publication Idaho Site's Cold War Cleanup Takes Center Stage in Publication January 22, 2013 - 12:00pm Addthis The Society of American Military Engineers focuses on the Idaho site’s environmental cleanup in the latest issue of its publication, The Military Engineer. This photo of the Engineering Test Reactor, which was decommissioned and demolished at the Idaho site, is featured in the story. The Society of American Military Engineers focuses on the Idaho site's environmental cleanup in the latest issue of its publication, The Military Engineer. This photo of the Engineering Test Reactor, which was decommissioned and demolished at the Idaho site, is featured in the story. The Society of American Military Engineers highlights this Idaho site photo on the cover of the latest issue of its publication, The Military Engineer. In the photo, work is under way to move spent nuclear fuel from wet storage to the safer, more permanent alternative of dry storage.

173

Idaho Site's Cold War Cleanup Takes Center Stage in Publication |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Idaho Site's Cold War Cleanup Takes Center Stage in Publication Idaho Site's Cold War Cleanup Takes Center Stage in Publication Idaho Site's Cold War Cleanup Takes Center Stage in Publication January 22, 2013 - 12:00pm Addthis The Society of American Military Engineers focuses on the Idaho site’s environmental cleanup in the latest issue of its publication, The Military Engineer. This photo of the Engineering Test Reactor, which was decommissioned and demolished at the Idaho site, is featured in the story. The Society of American Military Engineers focuses on the Idaho site's environmental cleanup in the latest issue of its publication, The Military Engineer. This photo of the Engineering Test Reactor, which was decommissioned and demolished at the Idaho site, is featured in the story. The Society of American Military Engineers highlights this Idaho site photo on the cover of the latest issue of its publication, The Military Engineer. In the photo, work is under way to move spent nuclear fuel from wet storage to the safer, more permanent alternative of dry storage.

174

CMB quadrupole suppression. II. The early fast roll stage  

Science Conference Proceedings (OSTI)

Within the effective field theory of inflation, an initialization of the classical dynamics of the inflaton with approximate equipartition between the kinetic and potential energy of the inflaton leads to a brief fast roll stage that precedes the slow roll regime. The fast roll stage leads to an attractive potential in the wave equations for the mode functions of curvature and tensor perturbations. The evolution of the inflationary perturbations is equivalent to the scattering by this potential and a useful dictionary between the scattering data and observables is established. Implementing methods from scattering theory we prove that this attractive potential leads to a suppression of the quadrupole moment for CMB and B-mode angular power spectra. The scale of the potential is determined by the Hubble parameter during slow roll. Within the effective field theory of inflation at the grand unification (GUT) energy scale we find that if inflation lasts a total number of e-folds N{sub tot}{approx}59, there is a 10%-20% suppression of the CMB quadrupole and about 2%-4% suppression of the tensor quadrupole. The suppression of higher multipoles is smaller, falling off as 1/l{sup 2}. The suppression is much smaller for N{sub tot}>59, therefore if the observable suppression originates in the fast roll stage, there is the upper bound N{sub tot}{approx}59.

Boyanovsky, D.; Vega, H. J. de [Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States); Observatoire de Paris, LERMA, Laboratoire Associe au CNRS UMR 8112, 61, Avenue de l'Observatoire, 75014 Paris (France); LPTHE, Universite Pierre et Marie Curie (Paris VI) et Denis Diderot (Paris VII), Laboratoire Associe au CNRS UMR 7589, Tour 24, 5eme. etage, 4, Place Jussieu, 75252 Paris, Cedex 05 (France); Sanchez, N. G. [Observatoire de Paris, LERMA, Laboratoire Associe au CNRS UMR 8112, 61, Avenue de l'Observatoire, 75014 Paris (France)

2006-12-15T23:59:59.000Z

175

Method of operating a two-stage coal gasifier  

DOE Patents (OSTI)

A method of operating an entrained flow coal gasifier (10) via a two-stage gasification process. A portion of the coal (18) to be gasified is combusted in a combustion zone (30) with near stoichiometric air to generate combustion products. The combustion products are conveyed from the combustion zone into a reduction zone (32) wherein additional coal is injected into the combustion products to react with the combustion products to form a combustible gas. The additional coal is injected into the reduction zone as a mixture (60) consisting of coal and steam, preferably with a coal-to-steam weight ratio of approximately ten to one.

Tanca, Michael C. (Tariffville, CT)

1982-01-01T23:59:59.000Z

176

Single-stage fluidized-bed gasification of peat  

Science Conference Proceedings (OSTI)

A single-stage fluidized-bed process to gasify peat for the production of a medium-Btu gas has a simple reactor design, maximizes product-gas yield by lowering oil production, and offers an economical means of using small peat deposits. In modeling this process, engineers applied process-development-unit data to derive a rate expression for fixed-carbon conversion and the influence of operating conditions on conversion. The rate of fixed carbon conversion is represented by a single path with the reactivity factor defined as a linear function of the moisture content. The model accurately describes the solids residence time and product yields for the reactor.

Rue, D.M.; Lau, F.S.; Weil, S.A.; Punwani, D.V.

1982-01-01T23:59:59.000Z

177

Extensible microprocessor without interlocked pipeline stages (emips), the reconfigurable microprocessor  

E-Print Network (OSTI)

In this thesis we propose to realize the performance benefits of applicationspecific hardware optimizations in a general-purpose, multi-user system environment using a dynamically extensible microprocessor architecture. We have called our dynamically extensible microprocessor design the Extensible Microprocessor without Interlocked Pipeline Stages, or eMIPS. The eMIPS architecture uses the interaction of fixed and configurable logic available in modern Field Programmable Gate Array (FPGA). This interaction is used to address the limitations of current microprocessor architectures based solely on Application Specific Integrated Circuits (ASIC). These limitations include inflexibility, size, and application specific performance optimization. The eMIPS system allows multiple secure extensions to load dynamically and to plug into the stages of a pipelined central processing unit (CPU) data path, thereby extending the core instruction set of the microprocessor. Extensions can also be used to realize on-chip peripherals, and if area permits, even multiple cores. Extension instructions reduce dramatically the execution time of frequently executed instruction patterns. These new functionalities we have developed can be exploited by patching the binaries of existing applications, without any changes to the compilers. A FPGA based workstation prototype and a flexible simulation system implementating this design demonstrates speedups of 2x-3x on a set of applications that include video games, real-time programs and the SPEC2000 integer benchmarks. eMIPS is the first realized workstation based entirely on a dynamically extensible microprocessor that is safe for general purpose, multi-user applications. By exposing the individual stages of the data path, eMIPS allows optimizations not previously possible. This includes permitting safe and coherent accesses to memory from within an extension, optimizing multi-branched blocks, and throwing precise and restart able exceptions from within an extension. This work describes a simplified implementation of an extensible microprocessor architecture based on the Microprocessor without Interlocked Pipeline Stages (MIPS) Reduced Instruction Set Computer (RISC) architecture. The concepts and methods contained within this thesis may be applied to other similar architectures. Given this simplified prototype we look forward to propose how this architecture will be expanded as it matures.

Pittman, Richard Neil

2003-05-01T23:59:59.000Z

178

Two-stage dilute acid prehydrolysis of biomass  

DOE Patents (OSTI)

A two-stage dilute acid prehydrolysis process on xylan containing hemicellulose in biomass is effected by: treating feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under predetermined low temperature conditions with a dilute acid for a residence time sufficient to hydrolyze the fast hydrolyzable xylan to xylose; removing said xylose from said fast hydrolyzable xylan and leaving a residue; and treating said residue having a slow hydrolyzable xylan with a dilute acid under predetermined high temperature conditions for a residence time required to hydrolyze said slow hydrolyzable xylan to xylose.

Grohmann, Karel (Winter Haven, FL); Torget, Robert W. (Littleton, CO)

1992-01-01T23:59:59.000Z

179

Stage 3 bucket shank bypass holes and related method  

DOE Patents (OSTI)

In a multi-stage turbine wherein at least one turbine wheel supports a row of buckets for rotation, and wherein the turbine wheel is located axially between first and second annular fixed arrays of nozzles, a cooling air circuit for purging a wheelspace between the turbine wheel and the second fixed annular array of nozzles comprising a flowpath through a shank portion of one or more buckets connecting a wheelspace between the turbine wheel and the first fixed annular array of nozzles with the wheelspace between the turbine wheel and the second fixed annular array of nozzles.

Leone, Sal Albert (Scotia, NY); Eldrid, Sacheverel Quentin (Saratoga Springs, NY); Lupe, Douglas Arthur (Ballston Lake, NY)

2002-01-01T23:59:59.000Z

180

8. Corn Hybrid Options for Replanting 1. Determining Vegetative Growth Stages of Corn  

E-Print Network (OSTI)

Knowing the growth stage of corn is critical to understanding the management practices and potential yield impact from wet weather and/or hail damage. There are a couple methods for determining vegetative growth stages in corn. These different staging methods are used by different disciplines and often occur on different herbicide labels. Knowing the differences between these staging methods will help to reduce confusion when determining corn growth and development. These stages are determined either by the number of visible leaf collars or the number of leaves. Collars and V-Stages The collar is the part of the leaf that wraps

Hail Damage To Corn; Corn Flood Survival; Chad Lee Agronomy

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Understanding Buck-Boost Power Stages in Switch Mode Power Supplies  

E-Print Network (OSTI)

A switching power supply consists of the power stage and the control circuit. The power stage performs the basic power conversion from the input voltage to the output voltage and includes switches and the output filter. This report addresses the buck-boost power stage only and does not cover control circuits. Detailed steady-state and small-signal analysis of the buck-boost power stage operating in continuous and discontinuous mode is presented. Variations in the standard buck-boost power stage and a discussion of power stage

Everett Rogers; System Power

1999-01-01T23:59:59.000Z

182

Effects of hydroelectric turbine passage on fish early life stages  

DOE Green Energy (OSTI)

Turbine-passage mortality has been studied extensively for juveniles and adults of migratory fish species, but few studies have directly quantified mortality of fish eggs and larvae. An analysis of literature relating to component stresses of turbine passage (i.e., pressure changes, blade contact, and shear) indicates that mortality of early life stages of fish would be relatively low at low-head, bulb turbine installations. The shear forces and pressure regimes normally experienced are insufficient to cause high mortality rates. The probability of contact with turbine blades is related to the size of the fish; less than 5% of entrained ichthyoplankton would be killed by the blades in a bulb turbine. Other sources of mortality (e.g., cavitation and entrainment of fish acclimated to deep water) are controlled by operation of the facility and thus are mitigable. Because turbine-passage mortality among fish early life stages can be very difficult to estimate directly, it may be more fruitful to base the need for mitigation at any given site on detailed knowledge of turbine characteristics and the susceptibility of the fish community to entrainment. 7 refs., 1 fig.

Cada, G.F.

1991-01-01T23:59:59.000Z

183

Is mediastinal irradiation necessary for stage I testicular seminoma  

Science Conference Proceedings (OSTI)

This study is a review of 39 patients with testicular seminoma, Stage I, treated at the Department of Radiation Oncology, James Graham Brown Cancer Center from 1959 to 1978. The age of the patients ranged from 16 to 70 years with a median of 37. Thirty-two (82%) patients presented with swelling or mass in the testis, four patients with pain, and three patients had seminoma diagnosed incidentally. Twenty (51%) patients had the tumor on the right side and 19 (49%) patients had the tumor on the left side. All patients received irradiation to the ipsilateral inguinal, iliac, and bilateral para-aortic nodes with ''hockey stick'' type fields. The majority of the patients received a midplane dose of 3,200 to 3,600 rad in 3-4 weeks time. None of the patients received prophylactic irradiation to the mediastinum and supraclavicular region. The 5-year actuarial survival rate is 96%. There is no additional benefit in giving prophylactic irradiation to the mediastinum and supraclavicular regions in Stage I testicular seminoma. A brief review of the literature regarding the role of prophylactic irradiation in this group of patients is done.

Jose, B.; Perkins, L.P.; Kays, H.; Chu, A.M.; Sharma, S.C.

1984-04-01T23:59:59.000Z

184

Low profile, high load vertical rolling positioning stage  

DOE Patents (OSTI)

A stage or support platform assembly for use in a synchrotron accurately positions equipment to be used in the beam line of the synchrotron. The support platform assembly includes an outer housing in which is disposed a lifting mechanism having a lifting platform or stage at its upper extremity on which the equipment is mounted. A worm gear assembly is located in the housing and is adapted to raise and lower a lifting shaft that is fixed to the lifting platform by an anti-binding connection. The lifting platform is moved vertically as the lifting shaft is moved vertically. The anti-binding connection prevents the shaft from rotating with respect to the platform, but does permit slight canting of the shaft with respect to the lifting platform so as to eliminate binding and wear due to possible tolerance mismatches. In order to ensure that the lifting mechanism does not move in a horizontal direction as it is moved vertically, at least three linear roller bearing assemblies are arranged around the outer-periphery of the lifting mechanism. One of the linear roller bearing assemblies can be adjusted so that the roller bearings apply a loading force against the lifting mechanism. Alternatively, a cam mechanism can be used to provide such a loading force.

Shu, Deming (Darien, IL); Barraza, Juan (Aurora, IL)

1996-01-01T23:59:59.000Z

185

Particle-jet interactions in an MHD second stage combustor  

DOE Green Energy (OSTI)

An Argonne two-phase combustion flow computer code is used to simulate reacting flows to aid in the development of an advanced combustor for magnetohydrodynamic power generation. The combustion code is a general hydrodynamics computer code for two-phase, two- dimensional, steady state, turbulent, and reacting flows, based on mass, momentum, and energy conservation laws for multiple gas species and particles. The combustion code includes turbulence, integral combustion, and particle evaporation submodels. A recently developed integral combustion submodel makes calculations more efficient and more stable while still preserving the major physical effects of the complex combustion processes. The combustor under investigation is a magnetohydrodynamic second stage combustor in which opposed jets of oxidizer are injected into a confined cross-stream of hot coal gas flow following a first stage swirl combustor. The simulation is intended to enhance the understanding the of seed particle evaporation in the combustor and evaluate the effects of combustor operating conditions on seed particle evaporation and vapor dispersion, which directly affect overall magnetohydrodynamic power generation. Computation results show that oxidizer jet angle and particle size may greatly affect particle evaporation and vapor dispersion. At a jet angle about 130 degrees, particle evaporation rate is the highest because of the highest average gas temperature. As particle size increases beyond 10 microns in diameter, the effects of particle size on wall deposition rate, evaporation delay, and downstream seed vapor dispersion become more pronounced. 16 refs., 10 figs.

Lottes, S.A.; Chang, S.L.

1992-01-01T23:59:59.000Z

186

Particle-jet interactions in an MHD second stage combustor  

DOE Green Energy (OSTI)

An Argonne two-phase combustion flow computer code is used to simulate reacting flows to aid in the development of an advanced combustor for magnetohydrodynamic power generation. The combustion code is a general hydrodynamics computer code for two-phase, two- dimensional, steady state, turbulent, and reacting flows, based on mass, momentum, and energy conservation laws for multiple gas species and particles. The combustion code includes turbulence, integral combustion, and particle evaporation submodels. A recently developed integral combustion submodel makes calculations more efficient and more stable while still preserving the major physical effects of the complex combustion processes. The combustor under investigation is a magnetohydrodynamic second stage combustor in which opposed jets of oxidizer are injected into a confined cross-stream of hot coal gas flow following a first stage swirl combustor. The simulation is intended to enhance the understanding the of seed particle evaporation in the combustor and evaluate the effects of combustor operating conditions on seed particle evaporation and vapor dispersion, which directly affect overall magnetohydrodynamic power generation. Computation results show that oxidizer jet angle and particle size may greatly affect particle evaporation and vapor dispersion. At a jet angle about 130 degrees, particle evaporation rate is the highest because of the highest average gas temperature. As particle size increases beyond 10 microns in diameter, the effects of particle size on wall deposition rate, evaporation delay, and downstream seed vapor dispersion become more pronounced. 16 refs., 10 figs.

Lottes, S.A.; Chang, S.L.

1992-07-01T23:59:59.000Z

187

The prospects for electric and hybrid electric vehicles: Second-stage results of a two-stage Delphi study  

DOE Green Energy (OSTI)

This study was conducted to collect information for a technical and economic assessment of electric (EV) and hybrid (HEV) vehicles. The first-stage worldwide survey was completed in fall 1994, while the second-stage was completed by summer 1995. The paper reports results from the second round of the survey and major differences between the two rounds. This second-stage international survey obtained information from 93 expert respondents from the automotive technology field. Key results: EVs will penetrate the market first, followed by internal combustion engine HEVs, while gas turbine and fuel cell HEVs will come after 2020. By 2020, EVs and internal combustion engine HEVs will have a 15% share of the new vehicle market; they will also cost 18-50% more and will be slightly inferior to 1993 gasoline cars. AC induction motor is projected to be superior to DC and DC brushless motors by 2020, although the DC motor will be less expensive in 2000. DC brushless motors are projected to be the most expensive. Though generally declining, battery costs will remain high. EVs are believed to be effective in reducing urban emissions; however, their costs must be reduced drastically. Petroleum is expected to be the predominant fuel for hybrid vehicles through 2020. Mean energy equivalent fuel economy of electric drivetrain vehicles is projected to be 20-40% greater than for conventional vehicles in 2000, and to rise a few percents during the projection period. Respondents anticipate only a 16% increase in conventional vehicle fuel economy from 2000 to 2020.

Ng, H.K.; Anderson, J.L.; Santini, D.J.; Vyas, A.D.

1996-08-01T23:59:59.000Z

188

Response of Peanuts to Irrigation Management at Different Crop Growth Stages  

E-Print Network (OSTI)

Past irrigation research on peanuts has shown that when the plant is exposed to soil moisture stress at different crop growth stages, different responses seem to exist between the Spanish and the Florunner peanut varieties. The Spanish peanuts appear more susceptible to soil moisture stress during the blooming and pegging stage, while the Florunners seem more susceptible during the late maturation stage. The objective of this experiment was to determine the optimum irrigation schedule for peanuts at different crop growth stages for the Spanish and the Florunner varieties. The yield of the two varieties was evaluated under seven different irrigation treatments including a "no stress" check treatment and a dryland treatment. Each treatment had a different schedule of either irrigating or stressing the peanut plant during one or more of three crop growth stages. The three crop growth stages were: (1) pegging; (2) early maturation; and (3) late maturation. Rainfall during the vegetative and blooming stage ensured adequate moisture for both of the crop growth stages. Evapotranspiration was monitored throughout the life cycle for both peanut varieties. The evapotranspiration was determined using a soil moisture balance equation. Plant growth in the form of dry matter accumulation and leaf area index was also studied for the Spanish variety. No significant differences in the leaf area index existed between the treatments. The dry matter growth analysis showed that an irrigation during the pegging stage resulted in a faster pod weight accumulation during the early maturation stage than if no irrigation occurred during that stage. The yield and evapotranspiration results showed that differences existed between the two peanut varieties. First, for the Spanish variety, the results indicated that soil moisture is needed during the pegging stage to obtain near maximum yields. Treatments with an irrigation during the pegging stage had a greater evapotranspiration and larger yields, than the treatments without an irrigation during this stage. Second, if an irrigation is made during the pegging stage, an additional irrigation during the early maturation stage is unnecessary. Third, an irrigation during the late maturation stage will increase yield if dry climatic conditions normally exist during this stage. In the case of the Florunner variety, the yield results indicated that moisture stress should occur in no more than one of the crop growth stages if yield reductions are to be minimized. Also, an adequate supply of soil moisture during the late maturation stage is absolutely necessary in order to obtain maximum yields for Florunner peanuts. Treatments which had an irrigation during the late maturation stage had a steady evapotranspiration rate during this crop growth stage and had near maximum yields. Treatments which showed a decrease in the evapotranspiration rate during the late maturation stage produced a significantly lower yield.

Howell, T. A.; McFarland, M. J.; Reddell, D. L.; Brown, K. W.; Newton, R. J.; Dahmen, P.

1980-12-01T23:59:59.000Z

189

Versatile collimating crystal stage for Bonse-Hart USAXS instrument.  

Science Conference Proceedings (OSTI)

An advanced ultra-small-angle X-ray scattering (USAXS) instrument, using the Bonse-Hart design and installed at APS, is a robust and reliable instrument, providing a scattering vector (q) range of nearly 4 decades (0.00015 to 1 {angstrom}{sup -1}), an intensity dynamic range of up to 9 decades, standard-less absolute intensity calibration, and USAXS imaging capabilities. This type of instrument typically uses channel-cut crystals in both the collimating (before sample) and analyzing (after sample) stages. The optical surfaces of these crystals are finished by etching processes, which leave an orange-peel surface texture, which would compromise the USAXS imaging quality. Therefore optics with highly polished surfaces using separated crystals in both collimating and analyzing stages were developed. A novel design of the optics and mechanical stage uses a fixed gap between the two separated collimating crystals in which a triangular section of the first crystal is removed, allowing for a variable number (1, 2, 4, 6, or 8) of crystal reflections for X-ray energies between 7 and 19 keV. The number of reflections is selected by lateral translation of the collimating crystal pair. Rotational alignment of the second crystal in the pair by an artificial channel-cut crystal mechanism, implemented with a novel high-stiffness weak link actuated by both a picomotor and a piezo-electric transducer, provides the capability to align or adjust an assembly of crystals to achieve the same performance as a single channel-cut crystal with integral weak link. The arrangement of both crystals is held on a removable base that can be remounted with precision within the Si(111) rocking curve on a three-point kinematic mount. Additional tilt adjustments are also provided for initial alignment. This monochromator has proven to be highly robust with respect to motions and vibrations, as well as flexible with respect to selection of number of reflections, and its performance directly resulted in the highly reliable performance of the whole USAXS instrument.

Ilavsky, J.; Shu, D.; Jemian, P. R.; Long, G. G.

2007-01-01T23:59:59.000Z

190

Application of a design optimization strategy to multi-stage compressor matching  

E-Print Network (OSTI)

A major challenge in the design of multi-stage compressors is the matching of stages to enable stable operation over a large range of mass flows and operating conditions. Particularly in turbofan low-pressure compressors, ...

Bert, Jérôme

2006-01-01T23:59:59.000Z

191

Stages in the Terraforming of Mars: the Transition to Flowering Plants  

Science Conference Proceedings (OSTI)

The process of the biological terraforming of Mars can be compared to the process of primary ecological succession on terrestrial barren rocks. Each stage in the succession alters the environment in such a way that the next stage in the process becomes possible. The initial stage in terraforming Mars will be dominated by microorganisms and lichens. The initial stage will begin the process of removing carbon dioxide from the Martian atmosphere

James M. Graham

2003-01-01T23:59:59.000Z

192

Single-stage dual priority regulator for photovoltaic systems  

DOE Green Energy (OSTI)

In this paper the design and application of a voltage regulator for use in Photovoltaic Systems with two separate loads of different priority is presented. The Single-Stage Dual Priority Regulator (SSDPR) charges two separate battery systems for high and low priority loads. The controller always charges the main battery first. It toggles between the two batteries when the main battery is nearly charged, and reduces the charge duty cycle of the main battery as it approaches full charge. The SSDPR utilizes the PV more efficiently by supplying low priority loads without jeopardizing the reliability of the critical load. Both the main and auxiliary voltage settings are adjustable, allowing the use of different types of batteries. The SDPR is being tested in the University of Lowell Vaccine Refrigerator Laboratory. A dual priority regulator is useful in any stand-alone system with multiple loads. Uses include photovoltaic powered homes, medical clinics, and recreational vehicles.

Salameh, Z.M.; Lynch, W.A. (Univ. of Massachusetts, Lowell (United States))

1992-01-01T23:59:59.000Z

193

Axially staged combustion system for a gas turbine engine  

DOE Patents (OSTI)

An axially staged combustion system is provided for a gas turbine engine comprising a main body structure having a plurality of first and second injectors. First structure provides fuel to at least one of the first injectors. The fuel provided to the one first injector is adapted to mix with air and ignite to produce a flame such that the flame associated with the one first injector defines a flame front having an average length when measured from a reference surface of the main body structure. Each of the second injectors comprising a section extending from the reference surface of the main body structure through the flame front and having a length greater than the average length of the flame front. Second structure provides fuel to at least one of the second injectors. The fuel passes through the one second injector and exits the one second injector at a location axially spaced from the flame front.

Bland, Robert J. (Oviedo, FL)

2009-12-15T23:59:59.000Z

194

Next stages in HDR technology development. [Hot Dry Rock (HDR)  

DOE Green Energy (OSTI)

Twenty years of research and development have brought HDR heat mining technology from the purely conceptual stage to the establishment of an engineering-scale heat mine at Fenton Hill, NM. In April 1992, a long-term flow test (LTFT) of the HDR reservoir at Fenton Hill was begun. The test was carried out under steady-state conditions on a continuous basis for four months, but a major equipment failure in late July forced a temporary suspension of operations. Even this short test provided valuable information and extremely encouraging results as summarized below: There was no indication of thermal drawdown of the reservoir. There was evidence of increasing access to hot rock with time. Water consumption was in the rangki of 10--12%. Measured pumping costs were $0.003 per kilowatt of energy produced. Temperature logs conducted in the reservoir production zone during and after the flow test confirmed the fact that there was no decline in the average temperature of the fluid being produced from the reservoir. In fact, tracer testing showed that the fluid was taking more indirect pathways and thus contacting a greater amount of hot rock as the test progressed. Water usage quickly dropped to a level of 10--15 gallons per minute, an amount equivalent to about 10--12% of the injected fluid volume. At a conversion rate of 10--15%, these would translate to effective fuel costs'' of 2--3[cents] per kilowatt hour of electricity production potential. The completion of the LTFT will set the stage for commercialization of HDR but will not bring HDR technology to maturity. Relatively samples extensions of the current technology may bring significant improvements in efficiency, and these should be rapidly investigated. In the longer run, advanced operational concepts could further improve the efficiency of HDR energy extraction and may even offer the possibility of cogeneration schemes which solve both energy and water problems throughout the world.

Duchane, D.V.

1993-01-01T23:59:59.000Z

195

Modelling and analysis of multi-stage systems of mistuned bladed disks  

Science Conference Proceedings (OSTI)

A stochastic reduced-order modelling technique for multi-stage mistuned bladed disks assemblies is proposed. In a perturbation framework, the base-line reduced-order model is built using multi-stage cyclic symmetry modelling approach. Uncertainties are ... Keywords: Cyclic symmetry, Mistuning, Multi-stage, Reduce-order models, Uncertainties

Denis Laxalde; Christophe Pierre

2011-02-01T23:59:59.000Z

196

The two-stage model for order selection and operation sequencing  

Science Conference Proceedings (OSTI)

This article considers the two-stage model of production optimization. At the first stage the optimal subset or orders is chosen from the set of all potential orders; at the second stage the optimal order execution sequence with respect to the penalty ... Keywords: cost, income, optimal sub-set of orders, order, order execution sequence, penalty

Anton Lominadze; Nodar Lominadze

2009-06-01T23:59:59.000Z

197

Scheduling a hybrid flowshop with batch production at the last stage  

Science Conference Proceedings (OSTI)

In this paper, we address the problem of scheduling n jobs in an s-stage hybrid flowshop with batch production at the last stage with the objective of minimizing a given criterion with respect to the completion time. The batch production at stage s is ... Keywords: Batch decoupling, Batch production, Hybrid flowshop scheduling, Improved dynamic programming, Lagrangian relaxation

Hua Xuan; Lixin Tang

2007-09-01T23:59:59.000Z

198

A module-level three-stage approach to the evolutionary design of sequential logic circuits  

Science Conference Proceedings (OSTI)

In this study, we propose a module-level three-stage approach (TSA) to optimize the evolutionary design for synchronous sequential circuits. TSA has a three stages process, involving a genetic algorithm (GA), a pre-evolution, and a re-evolution. In the ... Keywords: Data mining, Evolutionary approach, Frequently evolved blocks, Module-level, Redundant states, Sequential circuits, Three-stage

Yanyun Tao; Yuzhen Zhang; Jian Cao; Yalong Huang

2013-06-01T23:59:59.000Z

199

Modulus-based synchronous two-stage multisplitting iteration methods for linear complementarity problems  

Science Conference Proceedings (OSTI)

In order to solve large sparse linear complementarity problems on parallel multiprocessor systems, we construct modulus-based synchronous two-stage multisplitting iteration methods based on two-stage multisplittings of the system matrices. These iteration ... Keywords: Convergence, Linear complementarity problem, Matrix multisplitting, Modulus method, Successive relaxation, Two-stage iteration

Zhong-Zhi Bai; Li-Li Zhang

2013-01-01T23:59:59.000Z

200

EIS-0308: Record of Decision and Floodplain Statement | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Record of Decision and Floodplain Statement 8: Record of Decision and Floodplain Statement EIS-0308: Record of Decision and Floodplain Statement Interconnection of the Southpoint Power Plant with the Wester Area Power Administration's Parker-Davis No. 1 and No. 2, 230-kilovolt Transmission Lines Western has determined that no significant environmental impacts will result from construction, operation and maintenance of Calpine Corporation's Southpoint Power Plant, the two natural gas pipelines, or the approximately 7 miles of high voltage transmission lines, or from the upgrade of the Parker-Davis No. 1 230-kilovolt (kV) transmission line. Therefore, Western has decided to provide an interconnection with the plant and Western's transmission system in west central Arizona. However, Calpine has yet to obtain a permit from the Bureau of Land Management (BLM)

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

EIS-0294: Record of Decision | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

4: Record of Decision 4: Record of Decision EIS-0294: Record of Decision Interconnection of the Sutter Power Project With the Western Area Power Administration's Keswick-Elverta/Olinda-Elverta 230-Kilovolt Double-Circuit Transmission Line (June 1999) Record of Decision for the Interconnection of the Sutter Power Project With the Western Area Power Administration's Keswick-Elverta/Olinda-Elverta 230-Kilovolt Double-Circuit Transmission Line. The Western Area Power Administration (Western) prepared this Record of Decision in response to a request submitted to Western for a direct interconnection of Calpine Corporation's (Calpine) proposed Sutter Power Project (SPP) with Western's electric transmission system. Western Area Power Administration Record of Decision for the Interconnection of the Sutter Power Project With the Western Area Power

202

CX-008779: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9: Categorical Exclusion Determination 9: Categorical Exclusion Determination CX-008779: Categorical Exclusion Determination Curecanti-Poncha-Canon City West-Midway 230-Kilovolt Transmission Line Road Maintenance Gunnison, Chaffee, Fremont, Pueblo, and El Paso Counties, Colorado CX(s) Applied: B1.3 Date: 07/03/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration (Western) proposes to maintain sections of its access roads along the Curecanti (CCI)- Poncha (PON)- Canon City West (CCW) Midway (MID) 230-kilovolt transmission line segments. CX-008779.pdf More Documents & Publications CX-008778: Categorical Exclusion Determination CX-010109: Categorical Exclusion Determination EIS-0442: Draft Environmental Impact Statement

203

CX-008399: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

99: Categorical Exclusion Determination 99: Categorical Exclusion Determination CX-008399: Categorical Exclusion Determination Erosion Control Measures Structure No. 110-3 Dave Johnston to Stegall 230 Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 03/29/2012 Location(s): Wyoming Offices(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration (Western) will repair erosion damage at Structure No. 110-3 of the Dave Johnston to Stegall 230 kilovolt (kV) transmission line located near southeast Torrington. Wyoming. Flood flows along the North Platte River in 2011 migrated the active channel bank towards Structure No. 110-3. The potential exists for future channel meandering to underline the foundation supports of the 80 foot steel lattice structure. To mitigate this potential, Western proposes to

204

CX-007359: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

359: Categorical Exclusion Determination 359: Categorical Exclusion Determination CX-007359: Categorical Exclusion Determination McNary-Horse Heaven 230-kilovolt Transmission Line Raise (Structures 15/2 to 16/3) CX(s) Applied: B1.3 Date: 12/01/2011 Location(s): Washington Offices(s): Bonneville Power Administration Bonneville Power Administration (BPA) is proposing to add six wooden prop structures to the McNary-Horse Heaven No. 1 230-kilovolt transmission line between structures 15/2-16/3. The prop structures are needed to raise the existing line so that the conductor meets the necessary Minimum Approach Distance from the orchard below. An augur truck would use existing BPA roads to access the site and install wooden poles. More Documents & Publications CX-006582: Categorical Exclusion Determination

205

CX-006582: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

582: Categorical Exclusion Determination 582: Categorical Exclusion Determination CX-006582: Categorical Exclusion Determination Access Road Maintenance Along the McNary-Santiam 230-Kilovolt and Jones Canyon-Santiam 230-Kilovolt Transmission Line Corridors CX(s) Applied: B1.3 Date: 08/22/2011 Location(s): Wasco County, Oregon Office(s): Bonneville Power Administration Bonneville Power Administration (BPA) proposes to perform routine road maintenance activities along existing access roads, both on and off the rights-of-way. The work involves approximately 5,000 linear feet of road reconstruction or improvement work. The roadwork is needed to improve access for crews that will be maintaining the transmission line and towers within the transmission line corridor. The work will consist primarily of

206

CX-003624: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

624: Categorical Exclusion Determination 624: Categorical Exclusion Determination CX-003624: Categorical Exclusion Determination Replacement of Twenty 22-L Structures on the Satsop-Aberdeen Number 2 230-kilovolt Transmission Line CX(s) Applied: B1.3 Date: 08/12/2010 Location(s): Gray's Harbor County, Washington Office(s): Bonneville Power Administration Replacement of twenty 22-L structures on the Satsop-Aberdeen Number 2 230-kilovolt (kV) transmission line. The project work would involve removal of the existing towers and building replacement towers, replacing insulators, and attaching the existing conductor to the new towers. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-003624.pdf More Documents & Publications CX-003025: Categorical Exclusion Determination CX-001179: Categorical Exclusion Determination

207

CX-005115: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Categorical Exclusion Determination 5: Categorical Exclusion Determination CX-005115: Categorical Exclusion Determination Weld Substation Transformer Placement, Greeley, Weld County, Colorado CX(s) Applied: B4.6 Date: 01/07/2011 Location(s): Greeley, Colorado Office(s): Western Area Power Administration-Rocky Mountain Region Western Power Administration will install; one-150 megavolt-ampere transformer 230/115-kilovolt (KV2A), two-230-kilovolt power circuit breaker, four-230-kilovolt switches, one-115-kilovolt power circuit breaker, three-115-kilovolt switches, and associated bus, meter, and control equipment. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-005115.pdf More Documents & Publications CX-002585: Categorical Exclusion Determination CX-008378: Categorical Exclusion Determination CX-008785

208

CX-005379: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5379: Categorical Exclusion Determination 5379: Categorical Exclusion Determination CX-005379: Categorical Exclusion Determination Insulator Replacement in Agricultural Lands Along the Grand Coulee-Bell Number 3/Grand Coulee-Westside No. 1 Double Circuit 230 Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 03/02/2011 Location(s): Lincoln County, Washington Office(s): Bonneville Power Administration Bonneville Power Administration (BPA) proposes to replace worn insulators on sections of the Grand Coulee-Bell Number 3/Grand Coulee-Westside Number 1 double circuit 230-kilovolt (kV) transmission line. This portion of the transmission line is located in Lincoln County, Washington, in BPA?s Spokane Operations and Maintenance District. Townships, Ranges, and Sections crossed by the proposed project are listed below.

209

CX-009230: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

30: Categorical Exclusion Determination 30: Categorical Exclusion Determination CX-009230: Categorical Exclusion Determination Curecanti-Rifle 230 Kilovolt Transmission Line Sullivan Ranch Irrigation Water Pipeline Project Between Structures 25/5 to 26/1 CX(s) Applied: B4.9 Date: 09/28/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration (Western) proposes to grant permission to Mr. Dan Sullivan for the Sullivan Ranch Pipeline Project on Western's right-of-way (ROW) between structures 25/5 to 2611 on the Curecanti-Rifle (CCI-RFL) 230 kilovolt Transmission Line. CX-009230.pdf More Documents & Publications CX-010110: Categorical Exclusion Determination CX-010413: Categorical Exclusion Determination EIS-0442: Draft Environmental Impact Statement

210

EA-1478: Finding of No Significant Impact | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

478: Finding of No Significant Impact 478: Finding of No Significant Impact EA-1478: Finding of No Significant Impact Hoover Dam Bypass Project Phase II, Nevada Western Area Power Administration proposes to double-circuit a portion of the Hoover Dam Bypass Project PHase II (Double-Circuiting a Portion of the Hoover-Mead No. 5 and No. 7 230-kilovolt (kv) Transmission LInes with the Henderson-Mead No. 1 230-kV Transmission Line. In addition, a fiber optic cable would be placed as an overhead ground wire on the double-circuited transmission lines form the area of Hoover Dam to Mead Substation. Finding of No Significant Impact Hoover Dam Bypass Project Phase II (Double-Circuiting a Portion of the Hoover-Mead No. 5 and No. 7 230-kilovolt (kv) Transmission LInes with the Henderson-Mead No. 1 230-kV

211

CX-008380: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

80: Categorical Exclusion Determination 80: Categorical Exclusion Determination CX-008380: Categorical Exclusion Determination Archer to Ault 230 Kilovolt Transmission Line Structure Replacement, Weld County, Colorado CX(s) Applied: B1.3 Date: 05/09/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration (Western) proposes to replace an existing three pole wood structure along the Archer to Ault 230 kilovolt (kV) transmission line. The structure is located on private land adjacent to County Road 27 northwest of the town of Nunn in Weld County, Colorado. The structure will be replaced in-kind with wood poles of the same height, hardware, configuration, and at the same location. All work will be confined to Western's right-of way easement.

212

CX-008716: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

716: Categorical Exclusion Determination 716: Categorical Exclusion Determination CX-008716: Categorical Exclusion Determination Bonneville Power Administration (BPA) Tacoma Power Chehalis- Covington 230-Kilovolt (kV) Line/Convert Microwave Signals From Analog To Digital CX(s) Applied: B1.7 Date: 05/21/2012 Location(s): Washington, Washington, Washington Offices(s): Bonneville Power Administration The Bonneville Power Administration (BPA) and Tacoma Power (TPWR) have developed a joint plan to convert the microwave transfer trip signals on BPA's Chehalis-Covington 230 kilovolt (kV) line, which includes the 230-kV tap line to TPWR's Cowlitz Substation, from analog to digital. Microsoft Word - CX Tacoma Power Chehalis-Covington analog-digital conversion Final.docx More Documents & Publications CX-006198: Categorical Exclusion Determination

213

Categorical Exclusion Determinations: Arizona | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Arizona Arizona Categorical Exclusion Determinations: Arizona Location Categorical Exclusion Determinations issued for actions in Arizona. DOCUMENTS AVAILABLE FOR DOWNLOAD September 13, 2013 CX-010988: Categorical Exclusion Determination High Temperature DC-Bus Capacitors Cost Reduction and Performance Improvements CX(s) Applied: B3.6, B5.15 Date: 09/13/2013 Location(s): Arizona Offices(s): National Energy Technology Laboratory August 22, 2013 CX-010882: Categorical Exclusion Determination Liberty-Parker Dam #2 230-Kilovolt Transmission Line, Optical Power Ground Wire Repair CX(s) Applied: B4.7 Date: 08/22/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region August 12, 2013 CX-010883: Categorical Exclusion Determination PHX-LOB and LIB-LOB 230-Kilovolt Double-Circuit- Replace Insulators at

214

Categorical Exclusion Determinations: Western Area Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

July 25, 2012 July 25, 2012 CX-008787: Categorical Exclusion Determination Midway Substation 230 Kilovolt Upgrades El Paso County, Colorado CX(s) Applied: B4.6, B4.11 Date: 07/25/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region July 23, 2012 CX-008784: Categorical Exclusion Determination License Outgrant to Owl Creek Water District Town of Thermopolis, Hot Springs County, Wyoming CX(s) Applied: B4.9 Date: 07/23/2012 Location(s): Wyoming Offices(s): Western Area Power Administration-Rocky Mountain Region July 3, 2012 CX-008779: Categorical Exclusion Determination Curecanti-Poncha-Canon City West-Midway 230-Kilovolt Transmission Line Road Maintenance Gunnison, Chaffee, Fremont, Pueblo, and El Paso Counties, Colorado CX(s) Applied: B1.3

215

Categorical Exclusion Determinations: Washington | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

June 14, 2011 June 14, 2011 CX-006253: Categorical Exclusion Determination North Bonneville-Ross #1 230-Kilovolt, North Bonneville-Troutdale #2 230-Kilovolt Transmission Line Maintenance CX(s) Applied: B4.13 Date: 06/14/2011 Location(s): Clark County, Washington Office(s): Bonneville Power Administration June 10, 2011 CX-006198: Categorical Exclusion Determination South Tacoma - Frederickson Power Fiber Project CX(s) Applied: B4.7 Date: 06/10/2011 Location(s): Pierce County, Washington Office(s): Bonneville Power Administration June 9, 2011 CX-006197: Categorical Exclusion Determination Omak Area 3G Radio Site Upgrades CX(s) Applied: B1.19 Date: 06/09/2011 Location(s): Okanogan, Washington Office(s): Bonneville Power Administration June 8, 2011 CX-006049: Categorical Exclusion Determination

216

CX-006257: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

257: Categorical Exclusion Determination 257: Categorical Exclusion Determination CX-006257: Categorical Exclusion Determination Ponderosa 500-230 Kilovolt (kV) Transformer Addition CX(s) Applied: B4.6 Date: 06/29/2011 Location(s): Prineville, Oregon Office(s): Bonneville Power Administration The proposed project includes modification of existing substation equipment, installation of a new 500-230-kilovolt (kV) transformer, and an eight acre expansion northwest of the existing yard. The yard expansion is to facilitate the addition of a new 230-kV 2-bay breaker-and-a-half bus, four bays and the new transformer. A new control house would be built to accommodate controls and protection for the new equipment. The existing road to the south would be modified and graveled. All activities would occur on previously disturbed soils within Bonneville Power

217

CX-006819: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

19: Categorical Exclusion Determination 19: Categorical Exclusion Determination CX-006819: Categorical Exclusion Determination Replace Aging Wood Poles on Trans Alta?s Centralia Tap to Chehalis-Covington No. 1 230-Kilovolt Transmission Line CX(s) Applied: B1.3 Date: 09/16/2011 Location(s): Lewis County, Washington Office(s): Bonneville Power Administration Bonneville Power Administration (BPA) will perform routine maintenance and replacement of aging wood pole transmission line support structures, including all hardware and guy support structures on the Centralia Tap to Chehalis-Covington No. 1 230-kilovolt (kV) transmission line. The transmission line is owned and operated by Trans Alta and BPA maintains the line at Trans Alta?s expense. Trans Alta is contracting with BPA to complete the maintenance work.

218

Categorical Exclusion Determinations: Western Area Power  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Desert Southwest Region Desert Southwest Region Categorical Exclusion Determinations: Western Area Power Administration-Desert Southwest Region Categorical Exclusion Determinations issued by Western Area Power Administration-Desert Southwest Region. DOCUMENTS AVAILABLE FOR DOWNLOAD August 22, 2013 CX-010882: Categorical Exclusion Determination Liberty-Parker Dam #2 230-Kilovolt Transmission Line, Optical Power Ground Wire Repair CX(s) Applied: B4.7 Date: 08/22/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region August 12, 2013 CX-010883: Categorical Exclusion Determination PHX-LOB and LIB-LOB 230-Kilovolt Double-Circuit- Replace Insulators at Structure No. 28-2 With NCI Type Polymers CX(s) Applied: B1.3 Date: 08/12/2013 Location(s): Arizona Offices(s): Western Area Power Administration-Desert Southwest Region

219

CX-001048: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

48: Categorical Exclusion Determination 48: Categorical Exclusion Determination CX-001048: Categorical Exclusion Determination Lower Mid-Columbia/Midway - Vantage 230-Kilovolt Transmission Line Upgrade Project CX(s) Applied: B4.6, B4.7, B4.13 Date: 02/23/2010 Location(s): Grant County, Washington Office(s): Bonneville Power Administration Upgrade the lower Mid-Columbia area 230-kilovolt (kV) transmission system in Grant and Benton counties, Washington. The project requires re-conductoring 10.6 miles of the Midway-Vantage 230-kV transmission line, re-terminating the existing Vantage-Columbia 230-kV line at the Vantage Substation, and installing related transmission and communications equipment within the Midway and Vantage substations. Upgrades are needed to mitigate thermal overloads due to Columbia River flow management changes

220

CX-003194: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

194: Categorical Exclusion Determination 194: Categorical Exclusion Determination CX-003194: Categorical Exclusion Determination Installation of a Mid-Span Interset Structure between Structures 141/1 and 141/2 on the Existing Davis Dam-Prescott 230-Kilovolt Transmission Line in Yavapai County, Arizona CX(s) Applied: B4.13 Date: 06/10/2010 Location(s): Yavapai County, Arizona Office(s): Western Area Power Administration-Desert Southwest Region Western Area Power Administration plans to install a mid-span (interset) structure between structures 141/1 and 141/2 of the existing Davis Dam-Prescott 230-kilovolt transmission line. The proposed undertaking entails constructing a 100-foot tall steel H-frame near the midpoint of the 1900-foot-long span between two lattice tower structures. The H-frame will

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

CX-005852: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

852: Categorical Exclusion Determination 852: Categorical Exclusion Determination CX-005852: Categorical Exclusion Determination Stegall-Wayside 230 Kilovolt Access Road Extension CX(s) Applied: B1.13 Date: 05/05/2011 Location(s): Dawes County, Wyoming Office(s): Western Area Power Administration-Rocky Mountain Region Western Power Administration plans to construct an extension of an existing access road between structures 111-1 and 111-2 on the Stegall-Wayside 230 kilovolt transmission line. This road construction will provide access for removal of previously felled hazard trees along the transmission line right-of-way on private land. The project will extend the existing access road to the south from its present terminus at structure 111-1 and terminate before reaching structure 111-2. DOCUMENT(S) AVAILABLE FOR DOWNLOAD

222

Generation of high peak power pulse using 2 stage erbium-doped fiber amplifier  

E-Print Network (OSTI)

This thesis presents the results obtained from generation of high repetition rate, high power output pulse using an erbium-doped fiber amplifier (EDFA). Two stage amplification was employed. The first stage setup used 980nm pump laser to pump erbium-doped fiber. For the second stage, two 1480nm pump lasers were used to pump erbium-doped fiber in both forward and backward propagating direction. The signal laser was modulated to produce pulses with high repetition rate high peak power. The first stage produced pulse peak power of 2.52W. The overall output peak power, which is produced by the first and second stage, is 16W.

Lee, Kyung-Woo

2000-01-01T23:59:59.000Z

223

Cooling supply system for stage 3 bucket of a gas turbine  

DOE Patents (OSTI)

In a land based gas turbine including a compressor, a combustor and turbine section including at least three stages, an improvement comprising an inlet into a third stage nozzle from the compressor for feeding cooling air from the compressor to the third stage nozzle; at least one passageway running substantially radially through each airfoil of the third stage nozzle and an associated diaphragm, into an annular space between the rotor and the diaphragm; and passageways communicating between the annular space and individual buckets of the third stage.

Eldrid, Sacheverel Quentin (Saratoga Springs, NY); Burns, James Lee (Schenectady, NY); Palmer, Gene David (Clifton Park, NY); Leone, Sal Albert (Scotia, NY); Drlik, Gary Joseph (Fairfield, OH); Gibler, Edward Eugene (Cincinnati, OH)

2002-01-01T23:59:59.000Z

224

Centrifugal contactor modified for end stage operation in a multistage system  

DOE Patents (OSTI)

A cascade formed of a plurality of centrifugal contactors useful for countercurrent solvent extraction processes such as utilizable for the reprocessing of nuclear reactor fuels is modified to permit operation in the event one or both end stages of the cascade become inoperative. Weir assemblies are connected to each of the two end stages by suitable conduits for separating liquids discharged from an inoperative end stage based upon the weight of the liquid phases uses in the solvent extraction process. The weir assembly at one end stage is constructed to separate and discharge the heaviest liquid phase while the weir assembly at the other end stage is constructed to separate and discharge the lightest liquid phase. These weir assemblies function to keep the liquid discharge from an inoperative end stages on the same weight phase a would occur from an operating end stage.

Jubin, Robert T. (Powell, TN)

1990-01-01T23:59:59.000Z

225

Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Los Angeles' Sets the Los Angeles' Sets the Stage for Plug-In Electric Vehicles to someone by E-mail Share Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on Facebook Tweet about Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on Twitter Bookmark Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on Google Bookmark Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on Delicious Rank Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on Digg Find More places to share Alternative Fuels Data Center: Los Angeles' Sets the Stage for Plug-In Electric Vehicles on AddThis.com... April 18, 2011

226

Catalyst dispersion and activity under conditions of temperature- staged liquefaction  

DOE Green Energy (OSTI)

The general objectives of this research are (1) to investigate the use of highly dispersed catalysts for the pretreatment of coal by mild hydrogenation, (2) to identify the active forms of the catalysts under reaction conditions and (3) to clarify the mechanisms of catalysis. The ultimate objective is to ascertain if mild catalytic hydrogenation resulting in very limited or no coal solubilization is an advantageous pretreatment for the transformation of coal into transportable fuels. The experimental program will focus upon the development of effective methods of impregnating coal with catalysts, evaluating the conditions under which the catalysts are most active and establishing the relative impact of improved impregnation on conversion and product distributions obtained from coal hydrogenation. Liquefaction experiments of solvent-treated and untreated Blind Canyon (DECS-6) and Texas lignite (DECS-1) have been performed using ammonium tetrathiomolybdate (ATTM) and bis (dicarbonylcyclopentadienyl) iron (CPI) as catalyst precursors using temperature-staged conditions (275{degrees}C, 30 min; 425{degrees}C, 30 min). Solid state {sup 13}C NMR analysis was carried out for each coal and for selected residues. 12 refs., 14 figs., 9 tabs.

Davis, A.; Schobert, H.H.; Mitchell, G.D.; Artok, L.

1991-09-01T23:59:59.000Z

227

Ultrafine coal single stage dewatering and briquetting process  

SciTech Connect

It is well known that a large portion of the pyrite particles in the coal seams of the Illinois Basin are finely disseminated within the coal matrix. In order to liberate these micron size pyrite particles, one must use a fine grinding operation. The ultrafine coal particles are difficult to dewater and create problems in coal transportation, as well as in storage and handling at utility plants. The objective of this research project is to combine the ultrafine coal dewatering and briquetting processes into a single stage operation. This will be accomplished by the use of bitumen based emulsions for dewatering and a compaction device for briquetting. During this reporting period, several types of coal samples with various particle size distributions have been tested for use in the dewatering and briquetting processes. Furthermore, various bitumen emulsions have been tested to determine the optimum dewatering reagent. These dewatering and pelletizing tests were carried out using a lab-scale ram extruder. Discharge from the dewatering and briquetting processes was tested to determine compliance with current federal and state requirements. The influence of bitumen emulsion on the sulfur content of coal pellets made were also examined. In addition, a ram extruder which can be operated continuously to simulate a rotary press operation, has been built and is currently being tested for use in the fine coal dewatering and pelletizing process.

Wilson, J.W. [Missouri Univ., Rolla, MO (United States). Dept. of Mining Engineering; Honaker, R.Q. [Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mining Engineering

1995-12-31T23:59:59.000Z

228

Residential oil burners with low input and two stages firing  

SciTech Connect

The residential oil burner market is currently dominated by the pressure-atomized, retention head burner. At low firing rates pressure atomizing nozzles suffer rapid fouling of the small internal passages, leading to bad spray patterns and poor combustion performance. To overcome the low input limitations of conventional burners, a low pressure air-atomized burner has been developed watch can operate at fining rates as low as 0.25 gallons of oil per hour (10 kW). In addition, the burner can be operated in a high/low fining rate mode. Field tests with this burner have been conducted at a fixed input rate of 0.35 gph (14 kW) with a side-wall vented boiler/water storage tank combination. At the test home, instrumentation was installed to measure fuel and energy flows and record trends in system temperatures. Laboratory efficiency testing with water heaters and boilers has been completed using standard single purpose and combined appliance test procedures. The tests quantify benefits due to low firing rates and other burner features. A two stage oil burner gains a strong advantage in rated efficiency while maintaining capacity for high domestic hot water and space heating loads.

Butcher, T.; Krajewski, R.; Leigh, R. [and others

1997-12-31T23:59:59.000Z

229

UV Radiative Feedback During the Advanced Stages of Reionization  

E-Print Network (OSTI)

The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an extended reionization epoch. In this work, we explore the importance of negative UV radiative feedback on Tvir > 10^4 K halos during the middle and late stages of reionization. We do not try to self-consistently model reionization; instead, we explore a large parameter space in an attempt to draw general, robust conclusions. We do this using a tiered approach. Using 1-D hydrodynamical simulations, we model the collapse of gas onto halos of various masses under UVBs of various intensities. We then generate realistic, parametrized maps of the inhomogeneous UVB, using large-scale semi-numeric simulations. By combining these results, we find that under all reasonably conservative scenarios, UV feedback on atomically-cooled halos is not strong enough to notably delay the bulk of reionization. Such a delay is only likely if ionizing efficiencies of z > 10 sources are much higher (~ two orders of magnitude) than z ~ 6 data seem to imply. We also find that feedback is very strongly dependent on halo mass. Our results suggest that the natural time-scale for the bulk of reionization is the growth of the global collapsed fraction contained in Tvir > 10^4 K halos. Finally, our results underscore the importance of taking into account extended dynamical ranges when modeling reionization.

Andrei Mesinger; Mark Dijkstra

2008-06-19T23:59:59.000Z

230

EIS-0400: EPA Notice of Availability of a Draft Environmental Impact Statement  

Energy.gov (U.S. Department of Energy (DOE))

Grandby Pumping Plant Switchyard Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO

231

EIS-0400: EPA Notice of Availability of Final Environmental Impact Statement  

Energy.gov (U.S. Department of Energy (DOE))

Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO

232

PRESIDINGMEMBER'S PROPOSEDDECISION  

E-Print Network (OSTI)

condensation and evaporative inlet air cooling for the CTGs, the electrical switchyard and auxiliary equipment

233

Proceedings of the International Linear Collider Workshop  

E-Print Network (OSTI)

condensation and evaporative inlet air cooling for the CTGs, the electrical switchyard and auxiliary equipment

234

EIS-0400: Final Environmental Impact Statement  

Energy.gov (U.S. Department of Energy (DOE))

Granby Pumping Plant Switchyard-Windy Gap Substation Transmission Line Rebuild Project, Grand County, CO

235

Biomass waste gasification - Can be the two stage process suitable for tar reduction and power generation?  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer Comparison of one stage (co-current) and two stage gasification of wood pellets. Black-Right-Pointing-Pointer Original arrangement with grate-less reactor and upward moving bed of the pellets. Black-Right-Pointing-Pointer Two stage gasification leads to drastic reduction of tar content in gas. Black-Right-Pointing-Pointer One stage gasification produces gas with higher LHV at lower overall ER. Black-Right-Pointing-Pointer Content of ammonia in gas is lower in two stage moving bed gasification. - Abstract: A pilot scale gasification unit with novel co-current, updraft arrangement in the first stage and counter-current downdraft in the second stage was developed and exploited for studying effects of two stage gasification in comparison with one stage gasification of biomass (wood pellets) on fuel gas composition and attainable gas purity. Significant producer gas parameters (gas composition, heating value, content of tar compounds, content of inorganic gas impurities) were compared for the two stage and the one stage method of the gasification arrangement with only the upward moving bed (co-current updraft). The main novel features of the gasifier conception include grate-less reactor, upward moving bed of biomass particles (e.g. pellets) by means of a screw elevator with changeable rotational speed and gradual expanding diameter of the cylindrical reactor in the part above the upper end of the screw. The gasifier concept and arrangement are considered convenient for thermal power range 100-350 kW{sub th}. The second stage of the gasifier served mainly for tar compounds destruction/reforming by increased temperature (around 950 Degree-Sign C) and for gasification reaction of the fuel gas with char. The second stage used additional combustion of the fuel gas by preheated secondary air for attaining higher temperature and faster gasification of the remaining char from the first stage. The measurements of gas composition and tar compound contents confirmed superiority of the two stage gasification system, drastic decrease of aromatic compounds with two and higher number of benzene rings by 1-2 orders. On the other hand the two stage gasification (with overall ER = 0.71) led to substantial reduction of gas heating value (LHV = 3.15 MJ/Nm{sup 3}), elevation of gas volume and increase of nitrogen content in fuel gas. The increased temperature (>950 Degree-Sign C) at the entrance to the char bed caused also substantial decrease of ammonia content in fuel gas. The char with higher content of ash leaving the second stage presented only few mass% of the inlet biomass stream.

Sulc, Jindrich; Stojdl, Jiri; Richter, Miroslav; Popelka, Jan [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kralova Vysina 7, 400 96 Usti nad Labem (Czech Republic); Svoboda, Karel, E-mail: svoboda@icpf.cas.cz [Faculty of the Environment, Jan Evangelista Purkyne University in Usti nad Labem, Kralova Vysina 7, 400 96 Usti nad Labem (Czech Republic); Institute of Chemical Process Fundamentals of the ASCR, v.v.i., Rozvojova 135, 165 02 Prague 6 (Czech Republic); Smetana, Jiri; Vacek, Jiri [D.S.K. Ltd., Ujezdecek - Dukla 264, 415 01 Teplice I (Czech Republic); Skoblja, Siarhei; Buryan, Petr [Dept. of Gas, Coke and Air protection, Institute of Chemical Technol., Technicka 5, 166 28 Prague 6 (Czech Republic)

2012-04-15T23:59:59.000Z

236

ARM - Publications: Science Team Meeting Documents: The life stage of deep  

NLE Websites -- All DOE Office Websites (Extended Search)

The life stage of deep convection defined by the MSG multi-channel data and The life stage of deep convection defined by the MSG multi-channel data and rainfall type observed by PR/TRMM Inoue, Toshiro MRI/JMA The life cycle of deep convection is characterized as the cumulus/cumulonimbus type cloud classified by the method is dominant at the earlier stage and cirrus type cloud (anvil) is dominant at the decaying stage for no-split/no-merge case. We also know that convective rain is dominant at developing and mature stage, and stratiform rain is dominant at decaying stage. We studied the life cycle of deep convection in terms of cloud type using MSG ( Meteosat Second Generation) data taken every 15 minutes. The multi-channel data of MSG are use for cloud type classification. Cloud types are first classified by the split window method

237

Radiotherapy Improves Survival in Unresected Stage I-III Bronchoalveolar Carcinoma  

SciTech Connect

Purpose: To test the hypothesis that radiotherapy (RT) improves the outcome of patients with unresected, nonmetastatic bronchoalveolar carcinoma (BAC) by performing a population-based analysis within the Surveillance, Epidemiology, and End Results (SEER) registry. Methods and Materials: Inclusion criteria were as follows: patients diagnosed with BAC, Stage I-III, between 2001 and 2007. Exclusion criteria included unknown stage, unknown primary treatment modality, Stage IV disease, and those diagnosed at autopsy. Demographic data, treatment details, and overall survival were retrieved from the SEER database. Survival was analyzed using the Kaplan-Meier method and log-rank test. Results: A total of 6933 patients with Stage I-III BAC were included in the analysis. The median age at diagnosis was 70 years (range, 10-101 years). The majority of patients were diagnosed with Stage I (74.4%); 968 patients (14%) did not undergo surgical resection. Unresected patients were more likely to be older (p < 0.0001), male (p = 0.001), black (p < 0.0001), and Stage III (p < 0.0001). Within the cohort of unresected patients, 300 (31%) were treated with RT. The estimated 2-year overall survival for patients with unresected, nonmetastatic BAC was 58%, 44%, and 27% in Stage I, II, and III, respectively. Factors associated with improved survival included female sex, earlier stage at diagnosis, and use of RT. Median survival in those not receiving RT vs. receiving RT was as follows: Stage I, 28 months vs. 33 months (n = 364, p = 0.06); Stage II, 18 months vs. not reached (n = 31, nonsignificant); Stage III, 10 months vs. 17 months (n = 517, p < 0.003). Conclusions: The use of RT is associated with improved prognosis in unresected Stage I-III BAC. Less than a third of patients who could have potentially benefited from RT received it, suggesting that the medical specialists involved in the care of these patients underappreciate the importance of RT.

Urban, Damien [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel)] [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel); Mishra, Mark [Department of Radiation Oncology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania (United States)] [Department of Radiation Oncology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Onn, Amir [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel)] [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel); Dicker, Adam P. [Department of Radiation Oncology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania (United States)] [Department of Radiation Oncology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Symon, Zvi; Pfeffer, M. Raphael [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel) [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel); Sackler School of Medicine, Tel Aviv University, Tel Aviv (Israel); Lawrence, Yaacov Richard, E-mail: yaacovla@gmail.com [Department of Oncology, Sheba Medical Center, Ramat Gan (Israel); Department of Radiation Oncology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania (United States); Sackler School of Medicine, Tel Aviv University, Tel Aviv (Israel)

2012-11-01T23:59:59.000Z

238

A new multi-motor drive system based on two-stage direct power converter.  

E-Print Network (OSTI)

??The two-stage AC to AC direct power converter is an alternative matrix converter topology, which offers the benefits of sinusoidal input currents and output voltages,… (more)

Kumar, Dinesh

2011-01-01T23:59:59.000Z

239

OBSERVATIONS OF A TWO-STAGE SOLAR ERUPTIVE EVENT (SEE): EVIDENCE FOR SECONDARY HEATING  

SciTech Connect

We present RHESSI, SDO/AIA, SOHO/LASCO, STEREO, and GOES observations of a partially occulted solar eruptive event that occurred at the southwest limb on 2011 March 8. The GOES X-ray light curve shows two peaks separated by almost 2 hr that we interpret as two stages of a single event associated with the delayed eruption of a coronal mass ejection (CME). A hot flux rope formed during the first stage and continued expanding and rising throughout the event. The speed of the flux rope decreased from {approx}120 to 14 km s{sup -1} during the decay phase of the first stage and increased again during the second stage to become the CME with a speed of {approx}516 km s{sup -1}. RHESSI and GOES data analyses show that the plasma temperature reached over 20 MK in the first stage, then decreased to {approx}10 MK and increased to 15 MK in the second stage. This event provides clear evidence for a secondary heating phase. The enhanced EUV and X-ray emission came from the high corona ({approx}60 arcsec above the limb) in the second stage, {approx}40 arcsec higher than the site of the initial flare emission. STEREO-A on-disk observations indicate that the post-flare loops during this stage were of larger scale sizes and spatially distinct from those in the first stage.

Su Yang; Dennis, Brian R.; Holman, Gordon D.; Wang, Tongjiang; Chamberlin, Phillip C.; Savage, Sabrina [Solar Physics Laboratory (Code 671), Heliophysics Science Division, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Veronig, Astrid, E-mail: yang.su@uni-graz.at [Institute of Physics, University of Graz, Universitaetsplatz 5, Graz 8010 (Austria)

2012-02-10T23:59:59.000Z

240

Optimizing SC René N4 Alloy for DS Aft-Stage Bucket Applications ...  

Science Conference Proceedings (OSTI)

Single crystal (SC) René N4 aircraft engine turbine blade superalloy was converted to a directionally solidified (DS) alloy for latter-stage industrial gas turbine ...

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Early Stage R&D Available for Partnerships - Energy Innovation Portal  

Early Stage R&D Technologies Though the Energy Innovation Portal features thousands of innovations developed through Department of Energy funding since 1992, some ...

242

TWO-STAGE HETEROTROPHIC AND PHOTOTROPHIC CULTURE TECHNOLOGY FOR MICROALGAL BIOFUEL PRODUCTION .  

E-Print Network (OSTI)

??Chair: Dr. Shulin Chen Microalgae are attractive feedstocks for producing renewable biofuels. In this dissertation, I developed a two-stage heterotrophic and phototrophic microalgae culture system… (more)

[No author

2013-01-01T23:59:59.000Z

243

Linking nitrogen biogeochemistry to different stages of wetland soil development in the Mississippi River delta, Louisiana.  

E-Print Network (OSTI)

??Extensive wetland loss and nutrient-enhanced eutrophication occur across the Mississippi River delta and include newly emergent landscapes, in the early stages of ecological succession, and… (more)

Henry, Kelly Marie

2012-01-01T23:59:59.000Z

244

PET-CTi contribution in staging macronodular versus nodular non small cell lung carcinoma  

Science Conference Proceedings (OSTI)

We analyzed through comparison 2 groups of patients first with nodules smaller than 3 cm (Luzern group) and the second one with nodules lerger than 3cm (Zurich) to assess the role of PET-CTi to the staging of the non small cell lung cancer and to demonstrate ... Keywords: PET-CTi, adenopathy, diagnosis accuracy, lung cancer, tumor staging

Dana Alexandrescu; Milena Man; Bogdan Ra?iu-Duma; Roxana Miclaus

2009-09-01T23:59:59.000Z

245

Career satisfaction for managerial and technical anchored IS personnel in later career stages  

Science Conference Proceedings (OSTI)

Information system (IS) personnel have exhibit high incidence of technical and managerial anchors. It has been proposed that IS personnel with technical anchors have difficultly moving into a more advanced career stage that requires a greater emphasis ... Keywords: career anchors, career satisfaction, career stages, information system personnel

Maxwell K. Hsu; H. G. Chen; James J. Jiang; Gary Klein

2003-11-01T23:59:59.000Z

246

Multi-stage programming with functors and monads: Eliminating abstraction overhead from generic code  

Science Conference Proceedings (OSTI)

We use multi-stage programming, monads and Ocaml's advanced module system to demonstrate how to eliminate all abstraction overhead from generic programs, while avoiding any inspection of the resulting code. We demonstrate this clearly with Gaussian Elimination ... Keywords: Functor, Generative, Genericity, Linear algebra, MetaOCaml, Staging, Symbolic

Jacques Carette; Oleg Kiselyov

2011-05-01T23:59:59.000Z

247

Analyzing Geographic Patterns of Disease Incidence: Rates of Late-Stage Colorectal Cancer in Iowa  

Science Conference Proceedings (OSTI)

This study, using geocodes of the locations of residence of newly diagnosed colorectal cancer patients from the Iowa Cancer Registry, computed continuous spatial patterns of late-stage rates of colorectal cancer in Iowa. Variations in rates in intrahospital ... Keywords: GIS, SEER, colorectal cancer, geocodes, late-stage cancer

Gerard Rushton; Ika Peleg; Aniruddha Banerjee; Geoffrey Smith; Michele West

2004-06-01T23:59:59.000Z

248

Catalytic two-stage coal liquefaction process having improved nitrogen removal  

SciTech Connect

A process for catalytic multi-stage hydrogenation and liquefaction of coal to produce high yields of low-boiling hydrocarbon liquids containing low concentrations of nitogen compounds. First stage catalytic reaction conditions are 700.degree.-800.degree. F. temperature, 1500-3500 psig hydrogen partial pressure, with the space velocity maintained in a critical range of 10-40 lb coal/hr ft.sup.3 catalyst settled volume. The first stage catalyst has 0.3-1.2 cc/gm total pore volume with at least 25% of the pore volume in pores having diameters of 200-2000 Angstroms. Second stage reaction conditions are 760.degree.-870.degree. F. temperature with space velocity exceeding that in the first stage reactor, so as to achieve increased hydrogenation yield of low-boiling hydrocarbon liquid products having at least 75% removal of nitrogen compounds from the coal-derived liquid products.

Comolli, Alfred G. (Yardley, PA)

1991-01-01T23:59:59.000Z

249

Design Considerations, Installation and Operation of the Two-Stage Parallel Flow Absorption Chiller  

E-Print Network (OSTI)

This presentation describes the actual design consideration and field operation experience of two-stage parallel flow absorption chillers. The applications include new construction, rehabilitation of old HVAC systems, cogeneration, and industrial process heat recovery. The high performance (COP = 1.14), and reduced maintenance cost of the two-stage parallel flow absorption chiller provides a notable improvement over the conventional single stage absorption chillers (COP = .6). The infamous reputation of the single stage absorption chiller for crystallization, poor mechanical performance, and general unreliability has been completely neutralized by new design concepts incorporated in the two-stage parallel flow absorption chiller/heater. The ease of maintenance and virtual elimination of crystallization has vastly improved chilled water production and mechanical longevity. The two-stage parallel flow absorption chiller is adaptable to various heat sources including direct fired multi-fuel, steam, exhaust, hot water, thermal fluids, etc. This makes this chiller a worthy consideration as an alternate to electrically driven refrigeration. The two-stage parallel flow absorption chiller has been operating in the United States since 1979 and there is presently over 24,000 tons of installed capacity online. Installations include office buildings, hospitals, computer centers, industrial process water and others.

Hufford, P. E.

1984-01-01T23:59:59.000Z

250

Proton Beam Therapy of Stage II and III Non-Small-Cell Lung Cancer  

Science Conference Proceedings (OSTI)

Purpose: The present retrospective study assessed the role of proton beam therapy (PBT) in the treatment of patients with Stage II or III non-small-cell lung cancer who were inoperable or ineligible for chemotherapy because of co-existing disease or refusal. Patients and Methods: Between November 2001 and July 2008, PBT was given to 35 patients (5 patients with Stage II, 12 with Stage IIIA, and 18 with Stage IIIB) whose median age was 70.3 years (range, 47.4-85.4). The median proton dose given was 78.3 Gy (range, 67.1-91.3) (relative biologic effectiveness). Results: Local progression-free survival for Stage II-III patients was 93.3% at 1 year and 65.9% at 2 years during a median observation period of 16.9 months. Four patients (11.4%) developed local recurrence, 13 (37.1%) developed regional recurrence, and 7 (20.0%) developed distant metastases. The progression-free survival rate for Stage II-III patients was 59.6% at 1 year and 29.2% at 2 years. The overall survival rate of Stage II-III patients was 81.8% at 1 year and 58.9% at 2 years. Grade 3 or greater toxicity was not observed. A total of 15 patients (42.9%) developed Grade 1 and 6 (17.1%) Grade 2 toxicity. Conclusion: PBT for Stage II-III non-small-cell lung cancer without chemotherapy resulted in good local control and low toxicity. PBT has a definite role in the treatment of patients with Stage II-III non-small-cell lung cancer who are unsuitable for surgery or chemotherapy.

Nakayama, Hidetsugu, E-mail: hnakayam@tokyo-med.ac.jp [Proton Medical Research Center, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Department of Radiation Oncology, Tokyo Medical University, Shinjuku, Tokyo (Japan); Satoh, Hiroaki [Department of Respiratory Medicine, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Sugahara, Shinji [Proton Medical Research Center, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Department of Radiation Oncology, Tokyo Medical University, Shinjuku, Tokyo (Japan); Kurishima, Koichi [Department of Respiratory Medicine, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Tsuboi, Koji; Sakurai, Hideyuki [Proton Medical Research Center, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Ishikawa, Shigemi [Department of Thoracic Surgery, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Tokuuye, Koichi [Proton Medical Research Center, University of Tsukuba Graduate School of Comprehensive Human Sciences, Tsukuba, Ibaraki (Japan); Department of Radiation Oncology, Tokyo Medical University, Shinjuku, Tokyo (Japan)

2011-11-15T23:59:59.000Z

251

Compressor fault identification from overall performance data based on adaptive stage stacking  

SciTech Connect

In the present paper a method for the identification of faulty stages in a multistage compressor is presented. The values of overall compressor parameters, namely mass flow rate, pressure ratio, and efficiency, at different operating points are the input data to the method. Employing these data, the method gives the location and the number of faulty stages, as well as the amount of deviation from intact condition performance. It is shown that the kind of fault that has caused stage performance deterioration can be identified. Features of the method, such as generality of applicability, input data requirement, and reliability of the findings, are discussed.

Mathioudakis, K.; Stamatis, A. (National Technical Univ. of Athens (Greece). Lab. of Thermal Turbomachines)

1994-01-01T23:59:59.000Z

252

Two Stage Liquefaction With Illinois 6 Coal: Volume 3: Run 250  

Science Conference Proceedings (OSTI)

This report presents the operating results for Run 250 at the Advanced Coal Liquefaction R&D Facility in Wilsonville, Alabama. This run operated in a Two-Stage Liquefaction (TSL) mode using Illinois No. 6 bituminous coal from the Burning Star mine. The primary run objective was demonstration of unit and system operability for bituminous coal in the Close-Coupled Integrated Two-Stage Liquefaction (CC-ITSL) mode of operation. In CC-ITSL the products from the thermal (first stage) reactor are sent directly ...

1991-03-01T23:59:59.000Z

253

EA-0874: Low-level Waste Drum Staging Building at Weapons Engineering  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

74: Low-level Waste Drum Staging Building at Weapons 74: Low-level Waste Drum Staging Building at Weapons Engineering Tritium Facility, TA-16 Los Alamos National Laboratory, Los Alamos, New Mexico EA-0874: Low-level Waste Drum Staging Building at Weapons Engineering Tritium Facility, TA-16 Los Alamos National Laboratory, Los Alamos, New Mexico SUMMARY This EA evaluates the environmental impacts of a proposal to place a 3 meter (m) by 4.5 m prefabricated storage building (transportainer) adjacent to the existing Weapons Engineering Tritium Facility at Technical Area 16, U.S. Department of Energy's Los Alamos National Laboratory in Los Alamos, New Mexico, and to use the building as a staging site for sealed 55-gallon drums of noncompactible waste contaminated with low levels of tritium. PUBLIC COMMENT OPPORTUNITIES

254

A pseudo-polynomial size formulation for 2-stage two-dimensional ...  

E-Print Network (OSTI)

Sep 20, 2013 ... third stage cuts (trimming) can be used to remove a waste area;. • without ..... 51. 127. 98. 15. 54. 13. 65. Hchl4S. 10. 32. 127. 98. 15. 54. 13. 65.

255

Two-stage generalized simulated annealing for the construction of change-over designs  

Science Conference Proceedings (OSTI)

Kunert (1983) has found sufficient conditions for the optimal estimation of direct treatment effects from change-over designs. In this paper, a two-stage generalized simulated annealing algorithm uses these conditions to construct large change-over designs ...

Yuk W. Cheng; Deborah J. Street; William H. Wilson

2003-01-01T23:59:59.000Z

256

Ultrahigh resolution optical coherence tomography for the detection of early stage neoplastic pathologies  

E-Print Network (OSTI)

Identification of changes associated with early stage disease remains a critical objective of clinical detection and treatment. Effective screening and detection is important for improving outcome because advanced disease, ...

Hsiung, Pei-Lin, 1975-

2005-01-01T23:59:59.000Z

257

A Model for Recording Early-Stage Proposals and Decisions on Using COTS Components in Architecture  

Science Conference Proceedings (OSTI)

Large networked systems can include the whole technological spectrum of embedded systems from deeply embedded applicationspecific systems to software intensive applications including COTS component intensive subsystems. Significant up-front and early-stage ...

Tuomas Ihme

2003-02-01T23:59:59.000Z

258

Lab obtains approval to begin design on new radioactive waste staging  

NLE Websites -- All DOE Office Websites (Extended Search)

New radioactive waste staging facility New radioactive waste staging facility Lab obtains approval to begin design on new radioactive waste staging facility The 4-acre complex will include multiple staging buildings plus an operations center and a concrete pad for mobile waste characterization equipment. September 1, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy

259

Surveillance Guides - QAS 2.2 Staging/Storage of Components  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

STAGING/STORAGE OF COMPONENTS STAGING/STORAGE OF COMPONENTS 1.0 Objective The objective of this surveillance is to ensure that before components or consumables are used in maintenance and repair of equipment and systems, or before new components and systems are installed, they are stored in ways that prevent deterioration. The surveillance also examines the contractor's practices in staging materials, and the use of effective quality control to ensure materials and components are stored and staged properly. Finally, the surveillance provides an opportunity for the Facility Representative to verify that the contractor is complying with performance objectives established by the Department of Energy. 2.0 References 2.1 DOE 5700.6C, Quality Assurance

260

Development of an early stage ship design tool for rapid modeling in Paramarine  

E-Print Network (OSTI)

In early-stage ship design, it is helpful to perform preliminary design and analysis on many configurations to assist in developing and narrowing the trade space. This process is further complicated with the increasing ...

Thurkins, Eric J., Jr

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

EA-0874: Low-level Waste Drum Staging Building at Weapons Engineering...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

74: Low-level Waste Drum Staging Building at Weapons Engineering Tritium Facility, TA-16 Los Alamos National Laboratory, Los Alamos, New Mexico EA-0874: Low-level Waste Drum...

262

Effects of rotor tip clearance on an embedded compressor stage performance  

E-Print Network (OSTI)

Compressor efficiency variation with rotor tip gap is assessed using numerical simulations on an embedded stage representative of that in a large industrial gas turbine with Reynolds number being approximately 2 x 106 to ...

Sakulkaew, Sitanun

2012-01-01T23:59:59.000Z

263

Synergistic Antitumor Activity from Two-Stage Delivery of Targeted Toxins and Endosome-Disrupting Nanoparticles  

E-Print Network (OSTI)

Plant-derived Type I toxins are candidate anticancer therapeutics requiring cytosolic delivery into tumor cells. We tested a concept for two-stage delivery, whereby tumor cells precoated with an antibody-targeted gelonin ...

Su, Xingfang

264

Simulations of the Transformation Stage of the Extratropical Transition of Tropical Cyclones  

Science Conference Proceedings (OSTI)

The physical mechanisms associated with the transformation stage of the extratropical transition of a tropical cyclone are simulated with a mesoscale model using initial environmental conditions that approximate the mean circulations defined by ...

Elizabeth A. Ritchie; Russell L. Elsberry

2001-06-01T23:59:59.000Z

265

How Does Soil Moisture Influence the Early Stages of the South American Monsoon?  

Science Conference Proceedings (OSTI)

This article discusses the feedbacks between soil moisture and precipitation during the early stages of the South American monsoon. The system achieves maximum precipitation over the southern Amazon basin and the Brazilian highlands during the ...

Estela A. Collini; Ernesto H. Berbery; Vicente R. Barros; Matthew E. Pyle

2008-01-01T23:59:59.000Z

266

Optimization Online - Two-Stage Robust Optimization for N-k ...  

E-Print Network (OSTI)

Jan 30, 2012 ... sandia.gov) Yongpei Guan (guan ***at*** ise.ufl.edu). Abstract: This paper proposes a two-stage robust optimization approach to solve the N-k ...

267

Modes of Global Climate Variability during Marine Isotope Stage 3 (60–26 ka)  

Science Conference Proceedings (OSTI)

Recent analysis of 38 globally distributed paleoclimatic records covering Marine Isotope Stage 3 (MIS 3) 60–26 ka demonstrated that the two leading empirical orthogonal functions (EOFs) explaining the data are the Greenland ice-core signal (“...

Nicklas G. Pisias; Peter U. Clark; Edward J. Brook

2010-03-01T23:59:59.000Z

268

Provably near-optimal algorithms for multi-stage stochastic optimization models in operations management  

E-Print Network (OSTI)

Many if not most of the core problems studied in operations management fall into the category of multi-stage stochastic optimization models, whereby one considers multiple, often correlated decisions to optimize a particular ...

Shi, Cong, Ph.D. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

269

Symplectic Partitioned Runge-Kutta Methods with Minimum Phase Lag - Case of 5 Stages  

Science Conference Proceedings (OSTI)

In this work we consider explicit Symplectic Partitioned Runge-Kutta methods (SPRK) with five stages for problems with separable Hamiltonian. We construct a new method with constant coefficients third algebraic order and eighth phase-lag order.

Monovasilis, Th. [Department of International Trade, Technological Educational Institution of Western Macedonia at Kastoria, Kastoria, P.O. Box. 30, 52100 (Greece); Kalogiratou, Z. [Department of Informatics and Computer Technology, Technological Educational Institution of Western Macedonia at Kastoria, Kastoria, P.O. Box. 30, 52100 (Greece); Simos, T. E. [Department of Computer Science and Technology, Faculty of Science and Technology, University of Peloponnese (Greece)

2010-09-30T23:59:59.000Z

270

Impacts of the Manufacturing and Recycling Stages on Battery Life Cycles  

NLE Websites -- All DOE Office Websites (Extended Search)

IMPACTS OF THE MANUFACTURING AND RECYCLING STAGES ON BATTERY IMPACTS OF THE MANUFACTURING AND RECYCLING STAGES ON BATTERY LIFE CYCLES J. B. Dunn 1 , L. Gaines 1 , M. Barnes 2 , and J.L. Sullivan 1 1 Argonne National Laboratory, Energy Systems Division 9700 South Cass Avenue, Building 362 Argonne, IL 60439-4815, USA 2 Department of Mechanical Engineering The Pennsylvania State University 157E Hammond Building University Park, PA 16802 Keywords: battery, materials, manufacturing, life cycle, recycling Abstract

271

Centrifugal contactor modified for end stage operation in a multistage system  

DOE Patents (OSTI)

The present invention relates generally to centrifugal contactors in a multistage or cascade system for separating liquids of different weight phases, and more particularly to the modification of the centrifugal contactors functioning as the end stages in the cascade for enabling the cascade to continue operation when an end stage becomes inoperative. This invention was made as a result of work under contract AC05-84OR21400 between Martian Marietta Energy Systems, Inc., and the US Department of Energy. 4 figs.

Jubin, R.T.

1989-06-13T23:59:59.000Z

272

Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project (Presentation)  

DOE Green Energy (OSTI)

This presentation summarizes Entering a New Stage of Learning from the U.S. Fuel Cell Electric Vehicle Demonstration Project.

Wipke, K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Garbak, J.

2010-11-08T23:59:59.000Z

273

Early stage expansion and time-resolved spectral emission of laser-induced  

NLE Websites -- All DOE Office Websites (Extended Search)

Early stage expansion and time-resolved spectral emission of laser-induced Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Title Early stage expansion and time-resolved spectral emission of laser-induced plasma from polymer Publication Type Journal Article Year of Publication 2009 Authors Boueri, Myriam, Matthieu Baudelet, Jin Yu, Xianglei Mao, Samuel S. Mao, and Richard E. Russo Journal Applied Surface Science Volume 255 Issue 24 Pagination 9566-9571 Date Published 09/2009 Keywords Early stage plasma expansion, Laser ablation of polymer, Plasma spectral emission Abstract In the nanosecond laser ablation regime, absorption of laser energy by the plasma during its early stage expansion critically influences the properties of the plasma and thus its interaction with ambient air. These influences can significantly alter spectral emission of the plasma. For organic samples especially, recombination of the plasma with the ambient air leads to interfering emissions with respect to emissions due to native species evaporated from the sample. Distinguishing interfering emissions due to ambient air represents a critical issue for the application of laser-induced breakdown spectroscopy (LIBS) to the analysis of organic materials. In this paper, we report observations of early stage expansion and interaction with ambient air of the plasma induced on a typical organic sample (nylon) using timeresolved shadowgraph. We compare, in the nanosecond ablation regime, plasmas induced by infrared (IR) laser pulses (1064 nanometers) and ultraviolet (UV) laser pulses (266 nanometers). Nanosecond ablation is compared with femtosecond ablation where the post-ablation interaction is absent. Subsequent to the early stage expansion, we observe for each studied ablation regime, spectral emission from CN, a typical radical for organic and biological samples. Time-resolved LIBS allows identifying emissions from native molecular species and those due to recombination with ambient air through their different time evolution behaviors.

274

Identification and compensation of friction for a dual stage positioning system  

E-Print Network (OSTI)

Motion control systems are usually designed to track trajectories and/or regulate about a desired point. Most of the other objectives, like minimizing the tracking time or minimizing the energy expended, are secondary which quantify the above described objectives. The control problem in hard disk drives is tracking and seeking the desired tracks. Recent increase in the storage capacity demands higher accuracy of the read/write head. Dual stage actuators as compared to conventional single actuator increases the accuracy of the read/write head in hard disk drives. A scaled up version of the dual stage actuator is considered as the test bed for this thesis. Friction is present in all electromechanical systems. This thesis deals with modelling of the dual stage actuator test bed. A linear model predicts the behavior of the ?ne stage. Friction is signi?cant in the coarse stage. Considerable time has been spent to model the coarse stage as a friction based model. Initially, static friction models were considered to model the friction. Dynamic models, which describe friction better when crossing zero velocity were considered. By analyzing several experimental data it was concluded that the friction was dependent on position and velocity as compared to conventional friction models which are dependent on the direction of motion. Static and Coulomb friction were modelled as functions of velocity and position. This model was able to predict the behavior of the coarse stage satisfactorily for various initial conditions. A friction compensation scheme based on the modelled friction is used to linearize the system based on feedback linearization techniques.

Thimmalapura, Satish Voddina

2004-08-01T23:59:59.000Z

275

Effect of initial microstructure on the activation energy of second stage during austempering of ductile iron  

SciTech Connect

The good balance among mechanical properties of austempered ductile irons (ADI) mainly depends on the matrix microstructure, which basically consists of acicular ferrite and carbon-enriched austenite. This structure is produced by isothermal transformation of the austenite over the temperature range of 523 to 673 K. It is well accepted that during the isothermal holding, the transformation takes place in two stages. In the first stage, the austenite decomposes into acicular ferrite and carbon-enriched austenite. When the austenite is transformed at temperatures higher than 623 K, the acicular ferrite is free of carbides; at temperatures below 623 K, besides the formation of the acicular ferrite and austenite, precipitation of carbides takes place over the plates of the acicular ferrite. The mixture of ferrite and austenite is known as ausferrite being the responsible for the good mechanical properties of ADI. In this work, the ausferrite obtained above and below 623 K will be termed high and low temperature ausferrite respectively. Although ausferrite does not transform at room temperature, it is not a thermodynamically stable structure. Consequently, if the isothermal holding is extended, or if ADI is heated at high temperatures (523 to 800 K), the second stage of the austempering reaction will occur. During this stage, the carbon rich austenite will decompose into ferrite and carbides. In order to establish the maximum working temperature of ADI, it is necessary to characterize the thermal stability of ausferrite microstructure, since once stage II takes place, the mechanical properties, in particular ductility and toughness, are adversely affected. In the present work the influence of previous ausferrite microstructure (that obtained during first stage) of an alloyed ductile iron (0.6%Ni, 0.15%Mo) on the empirical activation energy of stage II is studied.

Campos-Cambranis, R.E.; Narvaez Hernandez, L. [UASLP, San Luis Potosi (Mexico). Instituto de Metalurgia] [UASLP, San Luis Potosi (Mexico). Instituto de Metalurgia; Cisneros-Guerrero, M.M. [Inst. Tecnologico de Saltillo (Mexico). Dept. Metal-Mecanica] [Inst. Tecnologico de Saltillo (Mexico). Dept. Metal-Mecanica; Perez-Lopez, M.J. [Inst. Tecnologico de Zacatecas (Mexico)] [Inst. Tecnologico de Zacatecas (Mexico)

1998-03-13T23:59:59.000Z

276

Maiden Wind Farm, Final NEPA/SEPA Environmental Impact Statement  

DOE Green Energy (OSTI)

BPA's proposed action is the execution of power purchase and construction and generation interconnection agreements to acquire and transmit up to 50 aMW (up to about 200 MW) of output from the proposed Maiden Wind Farm, which would be developed to generate up to 494 MW. Benton and Yakima Counties' proposed action is to grant Conditional Use Permits (CUPs) and other required permits for full build-out of the project, which would require construction of up to 549 wind turbines for a 494-MW project. The EIS evaluates two alternatives--the Proposed Action (which means that part or all of the proposed project would be built) and No Action. BPA would not purchase or transmit power from the project under the No Action Alternative and it is therefore likely that the project would not be constructed. Washington Winds Inc. proposes to construct and operate up to 494 megawatts (MW) of wind generation on privately- and publicly-owned property in Benton and Yakima Counties, Washington. This EIS evaluates the environmental effects of BPA's Proposed Action to execute power purchase and interconnection agreements for the purpose of acquiring up to 50 average megawatts (aMW) (up to about 200 MW) of the project developer's proposed Maiden Wind Farm. The project developer has requested a CUP for up to 494 MW. Although the full 494 MW of power may or may not be constructed, this EIS evaluates impacts from full buildout of the project. The project would be located about 10 miles northeast of Sunnyside in the Rattlesnake Hills and would occupy approximately 251 acres of land. Approximately 1,063 acres would be temporarily occupied during construction by facilities such as staging areas, equipment laydown areas, and rock quarries. Except for portions of two sections of land owned by the Washington Department of Natural Resources (DNR), the project would be constructed on privately-owned farm and ranch land in Benton and Yakima Counties. The major facilities of the project include up to 549 wind turbines with small transformers at the base of each turbine tower, underground and overhead collector cables, access roads, up to two substations, up to three operation and maintenance buildings, a potential 4-mile 230-kilovolt (kV) transmission line, and up to four meteorological towers (see Figure 2.1-2 in the Draft EIS). Construction of the project could begin in early 2003, with at least partial power generation expected as early as December 2003. Construction of the full project would take about nine months.

N /A

2003-01-03T23:59:59.000Z

277

Stage 1 behavior in a stress corrosion study of Type 304 stainless steel  

SciTech Connect

In stress corrosion studies, crack velocity plotted with respect to stress intensity generally yields a characteristic curve with three distinct regions. Stage I exhibits a threshold (K{sub ISCC}) followed by a rapid increase in crack velocity (da/dt) for small changes in stress intensity. Stage II is characterized by an essentially constant crack velocity with increases in the stress intensity. Stage III exhibits a rapid increase in crack velocity for small increases in stress intensity leading to fracture. Stage I behavior has been poorly characterized in literature due to previous emphasis on determining the threshold K{sub ISCC} and difficulty and uncertainty in measuring of a large increase in crack velocity with only incremental changes in stress intensity. Tests were conducted in the stage I regime to measure crack velocity as a function of constant stress intensity. Constant K specimens were prepared according to the Mostovoy design, (a tapered double cantilever beam). Specimens were prepared from Type 304 stainless steel containing 0.06 wt% C solution annealed at 1100C for 1 hour, water quenched, and annealed at 625C for 24 hours to produce sensitization. A sodium thiosulfate solution at 50{degree}C was chosen as the test environment.

Lund, A.L. [Washington State Univ., Richland, WA (United States); Jones, R.H. [Pacific Northwest Lab., Richland, WA (United States)

1994-03-01T23:59:59.000Z

278

Catalytic multi-stage process for hydroconversion and refining hydrocarbon feeds  

DOE Green Energy (OSTI)

A multi-stage catalytic hydrogenation and hydroconversion process for heavy hydrocarbon feed materials such as coal, heavy petroleum fractions, and plastic waste materials. In the process, the feedstock is reacted in a first-stage, back-mixed catalytic reactor with a highly dispersed iron-based catalyst having a powder, gel or liquid form. The reactor effluent is pressure-reduced, vapors and light distillate fractions are removed overhead, and the heavier liquid fraction is fed to a second stage back-mixed catalytic reactor. The first and second stage catalytic reactors are operated at 700-850.degree. F. temperature, 1000-3500 psig hydrogen partial pressure and 20-80 lb./hr per ft.sup.3 reactor space velocity. The vapor and light distillates liquid fractions removed from both the first and second stage reactor effluent streams are combined and passed to an in-line, fixed-bed catalytic hydrotreater for heteroatom removal and for producing high quality naphtha and mid-distillate or a full-range distillate product. The remaining separator bottoms liquid fractions are distilled at successive atmospheric and vacuum pressures, low and intermediate-boiling hydrocarbon liquid products are withdrawn, and heavier distillate fractions are recycled and further upgraded to provide additional low-boiling hydrocarbon liquid products. This catalytic multistage hydrogenation process provides improved flexibility for hydroprocessing the various carbonaceous feedstocks and adjusting to desired product structures and for improved economy of operations.

Comolli, Alfred G. (Yardley, PA); Lee, Lap-Keung (Cranbury, NJ)

2001-01-01T23:59:59.000Z

279

Catalytic two-stage coal hydrogenation process using extinction recycle of heavy liquid fraction  

DOE Patents (OSTI)

A process is described for catalytic two-stage hydrogenation and liquefaction of coal with selective extinction recycle of all heavy liquid fractions boiling above a distillation cut point of about 600--750 F to produce increased yields of low-boiling hydrocarbon liquid and gas products. In the process, the particulate coal feed is slurried with a process-derived liquid solvent normally boiling above about 650 F and fed into a first stage catalytic reaction zone operated at conditions which promote controlled rate liquefaction of the coal, while simultaneously hydrogenating the hydrocarbon recycle oils. The first stage reactor is maintained at 710--800 F temperature, 1,000--4,000 psig hydrogen partial pressure, and 10-90 lb/hr per ft[sup 3] catalyst space velocity. Partially hydrogenated material withdrawn from the first stage reaction zone is passed directly to the second stage catalytic reaction zone maintained at 760--860 F temperature for further hydrogenation and hydroconversion reactions. A 600--750 F[sup +] fraction containing 0--20 W % unreacted coal and ash solids is recycled to the coal slurrying step. If desired, the cut point lower boiling fraction can be further catalytically hydrotreated. By this process, the coal feed is successively catalytically hydrogenated and hydroconverted at selected conditions, to provide significantly increased yields of desirable low-boiling hydrocarbon liquid products and minimal production of hydrocarbon gases, and no net production of undesirable heavy oils and residuum materials. 2 figs.

MacArthur, J.B.; Comolli, A.G.; McLean, J.B.

1989-10-17T23:59:59.000Z

280

Cutting Edge Vehicles Take Center Stage at Texas Green Racing Event |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cutting Edge Vehicles Take Center Stage at Texas Green Racing Event Cutting Edge Vehicles Take Center Stage at Texas Green Racing Event Cutting Edge Vehicles Take Center Stage at Texas Green Racing Event September 27, 2013 - 4:00pm Addthis Team Muscle Milk won the American Le Mans Series race at the Circuit of the Americas in Austin, Texas last weekend. The Honda ARX-03c runs on E10 fuel. | Photo courtesy of Rizzo Motorsports Images Team Muscle Milk won the American Le Mans Series race at the Circuit of the Americas in Austin, Texas last weekend. The Honda ARX-03c runs on E10 fuel. | Photo courtesy of Rizzo Motorsports Images A Corvette running on E85 fuel won the GT class at Circuit of the Americas. | Photo courtesy of Rizzo Motorsports Images A Corvette running on E85 fuel won the GT class at Circuit of the Americas.

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

NETL: Staged, High-Pressure Oxy-Combustion Technology: Development and  

NLE Websites -- All DOE Office Websites (Extended Search)

Oxy-Combustion CO2 Emissions Control Oxy-Combustion CO2 Emissions Control Staged, High-Pressure Oxy-Combustion Technology: Development and Scale-up Project No.: DE-FE0009702 Washington University in St. Louis is developing a unique pressurized system to capture carbon from coal-fired power plants that incorporates a fuel-staged combustion approach. By staging the combustion, the temperature and heat transfer can be controlled. The potential benefits of the process are: higher efficiency, reduced process gas volume, increased radiative heat transfer, reduced oxygen demands, reduced capital equipment costs, increased CO2 purity entering the carbon compression and purification unit, and reduced auxiliary power demands. These benefits are expected to yield a lower cost of electricity than alternative approaches to pressurized oxy-combustion.

282

Sierra Nevada-Basin and Range Transition Near Reno, Nevada: Two-Stage  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Sierra Nevada-Basin and Range Transition Near Reno, Nevada: Two-Stage Development at 12 and 3 Ma Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Sierra Nevada-Basin and Range Transition Near Reno, Nevada: Two-Stage Development at 12 and 3 Ma Abstract Relative and absolute elevations of the Sierra Nevada and adjacent Basin and Range province, timing of their differentiation, and location, amount, and timing of strike-slip movement between them are controversial. The provincial boundary near Reno developed in two stages. (1) At ca. 12 Ma,

283

BELLA World Record Sets Stage for Laser Experiments in Novel Acceleration  

NLE Websites -- All DOE Office Websites (Extended Search)

BELLA World Record Sets Stage for Laser Experiments in Novel BELLA World Record Sets Stage for Laser Experiments in Novel Acceleration Techniques High Energy Physics (HEP) HEP Home About Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: sc.hep@science.doe.gov More Information » October 2012 BELLA World Record Sets Stage for Laser Experiments in Novel Acceleration Techniques Laser Delivers One Petawatt of Power in a Pulse only 40 Femtoseconds Long Every Second Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Image courtesy of Roy Kaltschmidt, LBNL

284

Department of Energy to Invest up to $12 Million to Support Early Stage  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

up to $12 Million to Support Early up to $12 Million to Support Early Stage Solar Technologies Department of Energy to Invest up to $12 Million to Support Early Stage Solar Technologies January 20, 2010 - 12:00am Addthis Washington, DC - U.S. Department of Energy Secretary Steven Chu today announced that the Department's National Renewable Energy Laboratory (NREL) will invest up to $12 million in total funding - $10 million from the American Recovery and Reinvestment Act - in four companies to support the development of early stage solar energy technologies and help them advance to full commercial scale. The goal of this effort is to help further expand a clean energy economy and make solar energy more cost-competitive with conventional forms of electricity. "Expanding the solar power industry in the U.S. can create new jobs, reduce

285

Setting the Stage for the Next Solar Decathlon | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Setting the Stage for the Next Solar Decathlon Setting the Stage for the Next Solar Decathlon Setting the Stage for the Next Solar Decathlon November 4, 2013 - 2:43pm Addthis Philipp Klebert, center, celebrates after learning Vienna University of Technology placed first in the U.S. Department of Energy Solar Decathlon 2013 at Orange County Great Park in Irvine, California. | Photo by Stefano Paltera, U.S. Department of Energy Solar Decathlon Philipp Klebert, center, celebrates after learning Vienna University of Technology placed first in the U.S. Department of Energy Solar Decathlon 2013 at Orange County Great Park in Irvine, California. | Photo by Stefano Paltera, U.S. Department of Energy Solar Decathlon Iani Batilov (left to right), Kalewalani Banaco, Heather Holmstrom, Jinger Zeng and Christian Iusso from the University of Nevada at Las Vegas celebrate after learning their team placed second at Solar Decathlon. | Photo by Stefano Paltera, U.S. Department of Energy Solar Decathlon

286

Caught in the act: the stage as a backdrop for defining crime in early modern England  

E-Print Network (OSTI)

This study seeks to explicate the complex relationship between crime and drama in early modern England. In a historical context of social, political, and religious upheaval, defining criminality becomes an essential component of maintaining social control when class conflicts often color the administration of justice. Several social stages, including the ceremony of the church, the pomp of the royal court, and the spectacle of criminal punishment, provide a setting in which criminals can be compared to actors. With old power structures reluctantly crumbling in response to economic change, the theater itself emerges as a forum for discussion where themes of corruption in the church and government are introduced. Shakespeare's Measure for Measure, John Webster's The Duchess of Malfi, and Ben Jonson's Bartholomew Fair offer examples of the relative nature of criminality and the unique role of the stage in conglomerating all of the societal stages to comment on their transgressions and shortcomings before an audience comprised of varying social classes.

Orman, Lindsay Erin

2004-01-01T23:59:59.000Z

287

Analysis and design of a high power factor, single-stage electronic dimming ballast  

SciTech Connect

This paper presents the analysis, design, and practical consideration of a single-stage electronic dimming ballast with unity power factor. The power stage of the ballast is derived from combining a buck-boost converter and a half-bridge series-resonant parallel-loaded inverter (SRPLI). With the plasma model of the lamp, the analysis of the ballast is carried out, from which the key equations used for dimming control are derived. Starting performance and dimming consideration are also addressed in the paper. In this dimming ballast, both pulsewidth modulation (PWM) and variable-frequency control strategies are employed. The discussed ballast with the controls can save a controller and a switch driver, reduce size and cost, and possibly increase system reliability over conventional two-stage systems in the applications with moderate power level. Simulated and experimental results of the ballast for an OSRAM T8 32-W lamp are used to verify the discussion.

Wu, T.F.; Yu, T.H. [National Chung Cheng Univ., Chia-Yi (Taiwan, Province of China)

1998-05-01T23:59:59.000Z

288

Impact of Neoadjuvant Radiation on Survival in Stage III Non-Small-Cell Lung Cancer  

Science Conference Proceedings (OSTI)

Purpose: The role of surgery in Stage III non-small-cell lung cancer (NSCLC) is controversial. This study was undertaken to assess the impact of neoadjuvant radiation therapy for Stage III NSCLC. Methods and Materials: This was a retrospective study from the Surveillance, Epidemiology, and End Results (SEER) database that included patients who were 18 years and older with NSCLC classified as Stage III and who underwent definitive therapy from 1988 to 2004. Patients were characterized by type of treatment received. Survival functions were estimated by the Kaplan-Meier method, and Cox regression model was used to analyze trends in overall (OS) and cause-specific survival (CSS). Results: A total of 48,131 patients were selected, with a median follow-up of 10 months (range, 0-203 months). By type of treatment, the 3-year OS was 10% with radiation therapy (RT), 37% with surgery (S), 34% with surgery and postoperative radiation (S-RT), and 45% with neoadjuvant radiation followed by surgery (Neo-RT) (p = 0.0001). Multivariable Cox model identified sex, race, laterality, T stage, N stage, and type of treatment as factors affecting survival. Estimated hazard ratios (HR) adjusted for other variables in regression model showed the types of treatment: S (HR, 1.3; 95% confidence interval [CI], 1.2-1.4), S-RT (HR, 1.2; 95% CI, 1.1-1.3), and RT (HR, 2.3; 95% CI, 2.15-2.53) were associated with significantly worse overall survival when compared with Neo-RT (p = 0.0001). Conclusion: This population based study demonstrates that patients with Stage III NSCLC receiving Neo-RT had significantly improved overall survival when compared with other treatment groups.

Koshy, Matthew, E-mail: mkoshy@umm.ed [Department of Radiation Oncology, University of Maryland School of Medicine and University of Maryland Marlene and Stewart Greenebaum Cancer Center, Baltimore, MD (United States); Goloubeva, Olga; Suntharalingam, Mohan [Department of Radiation Oncology, University of Maryland School of Medicine and University of Maryland Marlene and Stewart Greenebaum Cancer Center, Baltimore, MD (United States)

2011-04-01T23:59:59.000Z

289

Positron Emission Tomography/Computed Tomography in the Staging and Treatment of Anal Cancer  

SciTech Connect

Purpose: This study was intended to determine the role of PET/CT in the staging of anal cancer as a supplement to three-dimensional transanal ultrasound (TAUS) and inguinal ultrasound (US). The impact of the PET/CT on the initial stage and treatment plan proposed by TAUS/US was assessed. Methods and Materials: Ninety-five (95) patients referred to our clinic between July 1, 2005, and December 31, 2009, were retrospectively reviewed. All patients had biopsy-proven primary squamous cell cancer of the anal canal. There were 65 females (68%) and 30 males (32%), and the median age was 58 years (range, 35-88 years). Six (6%) of the patients were HIV positive. All patients were staged with TAUS/US and PET/CT. Results: Twenty-eight (28) patients were diagnosed with suspicious perirectal node metastases. TAUS visualized 24 of these, whereas PET/CT detected 15. Suspicious inguinal nodes were visualized on either US or PET/CT in 41 patients. Seventeen (17) of these had confirmed malignant disease on biopsy, and 15 had confirmed benign disease. All 17 patients (100%) with malignant inguinal nodes were diagnosed by PET/CT, whereas US identified 16 (94%). Ten patients were diagnosed with suspicious inguinal nodes on PET/CT that had not been seen on US. One of these was malignant, three were benign, and six were not biopsied. PET/CT diagnosed eight metastatic sites, whereas TAUS/US diagnosed three. PET/CT discovered three of the five synchronous cancers seen in this study. PET/CT upstaged the disease in 14% of the cases and changed the treatment plan proposed by TAUS/US in 17%. Conclusion: PET/CT has great potential influence on the staging and treatment of anal cancer. TAUS is important in the staging of the primary tumor and N1-stage, whereas PET/CT seems necessary for the N2/3-stage, the M-stage and synchronous cancers.

Sveistrup, Joen, E-mail: joensveistrup@hotmail.com [Department of Radiation Oncology, Rigshospitalet, Copenhagen (Denmark); Loft, Annika [PET and Cyclotron Unit, Department of Clinical Physiology and Nuclear Medicine, Centre of Diagnostic Investigations, Rigshospitalet, Copenhagen (Denmark); Berthelsen, Anne Kiil [Department of Radiation Oncology, Rigshospitalet, Copenhagen (Denmark); PET and Cyclotron Unit, Department of Clinical Physiology and Nuclear Medicine, Centre of Diagnostic Investigations, Rigshospitalet, Copenhagen (Denmark); Henriksen, Birthe Merete; Nielsen, Michael Bachmann [Department of Radiology, Section of Ultrasound X4123, Rigshospitalet, Copenhagen (Denmark); Engelholm, Svend Aage [Department of Radiation Oncology, Rigshospitalet, Copenhagen (Denmark)

2012-05-01T23:59:59.000Z

290

Liquid phase methanol reactor staging process for the production of methanol  

DOE Patents (OSTI)

The present invention is a process for the production of methanol from a syngas feed containing carbon monoxide, carbon dioxide and hydrogen. Basically, the process is the combination of two liquid phase methanol reactors into a staging process, such that each reactor is operated to favor a particular reaction mechanism. In the first reactor, the operation is controlled to favor the hydrogenation of carbon monoxide, and in the second reactor, the operation is controlled so as to favor the hydrogenation of carbon dioxide. This staging process results in substantial increases in methanol yield.

Bonnell, Leo W. (Macungie, PA); Perka, Alan T. (Macungie, PA); Roberts, George W. (Emmaus, PA)

1988-01-01T23:59:59.000Z

291

Models for the two-dimensional two-stage cutting stock problem with multiple stock size  

Science Conference Proceedings (OSTI)

We consider a Two-Dimensional Cutting Stock Problem (2DCSP) where stock of different sizes is available, and a set of rectangular items has to be obtained through two-stage guillotine cuts. We propose and computationally compare three Mixed-Integer Programming ... Keywords: Computational experiments, Cutting stock problem, Mixed-integer programming models

Fabio Furini, Enrico Malaguti

2013-08-01T23:59:59.000Z

292

StagedSAC: a case study in performance-oriented DSL development  

Science Conference Proceedings (OSTI)

Domain-specific languages (DSLs) can bridge the gap between high-level programming and efficient execution. However, implementing compiler tool-chains for performance oriented DSLs requires significant effort. Recent research has produced methodologies ... Keywords: DSL, SAC, domain specific languages, optimization, single assignment c, staging

Vlad Ureche; Tiark Rompf; Arvind Sujeeth; Hassan Chafi; Martin Odersky

2012-01-01T23:59:59.000Z

293

Heat transfer and film-cooling for the endwall of a first stage turbine vane  

E-Print Network (OSTI)

the turbine. Turbine inlet conditions in a gas turbine engine gen- erally consist of temperature and velocityHeat transfer and film-cooling for the endwall of a first stage turbine vane Karen A. Thole of the airfoils. One means of preventing degradation in the turbine is to film-cool components whereby coolant

Thole, Karen A.

294

A two-stage evolutionary algorithm based on sensitivity and accuracy for multi-class problems  

Science Conference Proceedings (OSTI)

The machine learning community has traditionally used correct classification rates or accuracy (C) values to measure classifier performance and has generally avoided presenting classification levels of each class in the results, especially for problems ... Keywords: Accuracy, Classification, Imbalanced datasets, Multi-class, Sensitivity, Two-stage evolutionary algorithm

Pedro Antonio Gutiérrez; César Hervás-Martínez; Francisco José Martínez-Estudillo; Mariano Carbonero

2012-08-01T23:59:59.000Z

295

Differential Effects on ERP Post-Adoption Stages across Scandinavian and Iberian SMEs1  

Science Conference Proceedings (OSTI)

Enterprise resource planning ERP post-adoption stages use and value and small and medium enterprises SME are of high interest among both academics and practitioners. Grounded in the diffusion of innovation theory to explain ERP use and resource-based ... Keywords: Diffusion-Of-Innovation, Enterprise Resource Planning ERP, Iberian, Resource-Based-View, Scandinavian, Small and Medium Enterprises SMEs, Use, Value

Pedro Ruivo, Tiago Oliveira, Björn Johansson, Miguel Neto

2013-07-01T23:59:59.000Z

296

A Two-Stage Distributed Architecture for Voltage Control in Power Distribution Systems  

E-Print Network (OSTI)

-positive power injections. With respect to this, the University of Illinois solar decathlon house--the Gable Home by the US DOE Smart Grid initiative, and its European counterpart Electricity Networks of the Future, power1 A Two-Stage Distributed Architecture for Voltage Control in Power Distribution Systems Brett A

Hadjicostis, Christoforos

297

Cascaded single-stage distributed amplifier using DPHEMT devices for multioctave performance  

Science Conference Proceedings (OSTI)

This paper describes a multioctave (2---18 GHz) distributed amplifier design using the concept of cascaded reactively terminated single-stage distributed amplifier (CRTSSDA) configuration for EW applications. The concept of CRTSSDA is demonstrated to ... Keywords: Distributed amplifiers, Microwave amplifiers, Microwave circuits

Bal S. Virdee

2010-04-01T23:59:59.000Z

298

A Two-Stage ML Approach to Missing Data: Theory and Application to Auxiliary Variables  

E-Print Network (OSTI)

15) in the present article). E&P did not report coverage for400. *First and last columns of Table 2 of E&P; **Table 3,row 14, of E&P; *** Table 4, row 14, of E&P. Two-Stage ML

Victoria Savalei; Peter M. Bentler

2011-01-01T23:59:59.000Z

299

A Two-Stage ML Approach to Missing Data: Theory and Application to Auxiliary Variables  

E-Print Network (OSTI)

15) in the present article). E&P did not report coverage for400. *First and last columns of Table 2 of E&P; **Table 3,row 14, of E&P; *** Table 4, row 14, of E&P. Two-Stage ML

Savalei, Victoria; Bentler, Peter M.

2007-01-01T23:59:59.000Z

300

Feasibility of the living canvas: restricting projection to a performer on stage  

Science Conference Proceedings (OSTI)

The Living Canvas initiative aims to use a performer on stage as a dynamic projection surface. Using machine vision in the near-infrared spectrum enables the system to follow and adapt to the performer, restricting projection to the silhouette. Ultimately, ... Keywords: art & design, augmented reality, performance, projection systems

Martin Naef; Cathie Boyd

2008-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Strategic level three-stage production distribution planning with capacity expansion  

Science Conference Proceedings (OSTI)

In this paper, we address a strategic planning problem for a three-stage production-distribution network. The problem under consideration is a single-item, multi-supplier, multi-producer, and multi-distributor production-distribution network with deterministic ... Keywords: Heuristics, Mixed integer programming, Production-distribution planning

P?nar Y?lmaz; Bülent Çatay

2006-12-01T23:59:59.000Z

302

A Computer Program for Simulating Transient Behavior in Steam Turbine Stage Pressure of AHWR  

SciTech Connect

It is proposed to couple the Advanced Heavy water reactor (AHWR), which is being developed by Bhabha Atomic Research Centre, India, with a desalination plant. The objective of this coupling is to produce system make-up and domestic water. The proposed desalination plant needs about 1.9 kg/sec of steam and the minimum pressure requirement is 3 bars. The desalination plant can be fed with bled steam extracted from a suitable stage in low pressure turbine. As the turbine stage pressure changes with the load, it is essential to know the availability of bled steam at aforesaid pressure for various load condition. The objective of the present study is to identify a suitable extraction point so as to ensure availability of steam at desired condition for desalination plant, even at part load conditions. In order to fulfill the above objective a steam and feed system analysis code was developed which incorporates the mathematical formulation of different components of the steam and feed system such as, high pressure (HP) and low pressure (LP) turbines, re-heater, feed heaters etc. The dynamic equations are solved simultaneously to obtain the stage pressure at various load conditions. Based on the results obtained, the suitable extraction stage in LP turbine was selected. This enables to determine the lowest possible part load operation up to which availability of desalination plant could be ensured. (authors)

Dutta, Anu; Thangamani, I.; Chakraborty, G.; Ghosh, A.K.; Kushwaha, H.S. [Bhabha Atomic Research Centre, Trombay, Mumbai - 400 085 (India)

2006-07-01T23:59:59.000Z

303

MANUFACTURING COMPLEXITY EVALUATION AT THE DESIGN STAGE FOR BOTH MACHINING AND LAYERED MANUFACTURING  

E-Print Network (OSTI)

and an additive process. Manufacturability indexes are calculated at the tool design stage, these indexes provide an accurate view of which areas of the tool will advantageously be machined or manufactured by an additive], but manufacturing features for additive technologies are still under development [5]. Furthermore, for free

Paris-Sud XI, Université de

304

Measuring the true managerial efficiency of bank branches in Taiwan: A three-stage DEA analysis  

Science Conference Proceedings (OSTI)

This paper aims to explore the true managerial efficiencies of the branches of a case bank in Taiwan. With 123 branches of the case bank comprising the sample, the study finds that, after the adjustment of environmental factors and statistical noise, ... Keywords: Bank branches, Environmental variables, Malmquist productivity index, Stochastic frontier approach, Three-stage data envelopment analysis, True managerial efficiency

Jonchi Shyu; Terri Chiang

2012-10-01T23:59:59.000Z

305

A two-stage stochastic programming model for the parallel machine scheduling problem with machine capacity  

Science Conference Proceedings (OSTI)

This paper proposes a two-stage stochastic programming model for the parallel machine scheduling problem where the objective is to determine the machines' capacities that maximize the expected net profit of on-time jobs when the due dates are uncertain. ... Keywords: Average sample approximation, Parallel machine scheduling, Ranking and selection, Stochastic programming, Weighted number of on-time jobs

Talal Al-Khamis; Rym M'Hallah

2011-12-01T23:59:59.000Z

306

Mind the Resonances: Final stages of accretion into bumpy black holes  

E-Print Network (OSTI)

In this article we discuss a possible way of testing the Kerr black hole hypothesis by taking advantage of phenomena correlated with chaotic motion in the final stages of an accretion disk around a bumpy black hole. We anticipate that these phenomena should have an imprint in the electromagnetic spectrum coming from the accretion disk.

Georgios Lukes-Gerakopoulos; George Contopoulos

2013-04-29T23:59:59.000Z

307

Comparison of Early-stage Design Methods for a Two-mode Hybrid Electric Vehicle  

E-Print Network (OSTI)

Comparison of Early-stage Design Methods for a Two-mode Hybrid Electric Vehicle Kukhyun Ahn+ , J the propulsion system of a hybrid electric vehicle (HEV), engine, transmission, motor, battery, power electronics. In this paper, two design optimization methods for a two-mode hybrid vehicle are examined: The first integrates

Papalambros, Panos

308

Prudhoe Bay Oil Production Optimization: Using Virtual intelligence Techniques, Stage One: Neural Model Building  

E-Print Network (OSTI)

SPE 77659 Prudhoe Bay Oil Production Optimization: Using Virtual intelligence Techniques, Stage One Exploration (Alaska) and Carl D. Sisk SPE, BP Exploration Copyright 2002, Society of Petroleum Engineers Inc, TX 75083-3836, U.S.A., fax 01-972-952-9435. Abstract Field data from the Prudhoe Bay oil field

Mohaghegh, Shahab

309

Analysis of the SN1987A two-stage explosion hypothesis with account for the MSW neutrino flavour conversion  

E-Print Network (OSTI)

Detection of 5 events by the Liquid Scintillation Detector (LSD) on February, 23, 1987 was interpreted in the literature as the detection of neutrinos from the first stage of the two-stage supernova collapse. We pose rigid constraints on the properties of the first stage of the collapse, taking into account neutrino flavour conversion due to the MSW-effect and general properties of supernova neutrino emission. The constraints depend on the unknown neutrino mass hierarchy and mixing angle \\theta_{13}.

Oleg Lychkovskiy

2007-07-17T23:59:59.000Z

310

Novel use of a radiolabelled antibody against stage specific embryonic antigen for the detection of occult abscesses in mammals  

DOE Patents (OSTI)

The invention discloses improved reagents containing antibodies against stage specific embryonic antigen-1 antibodies and improved methods for detection of occult abscess and inflammation using the improved reagents.

Thakur, Madhukar L. (Cherry Hill, NJ)

1990-01-01T23:59:59.000Z

311

Solar Trough Organic Rankine Electricity System (STORES) Stage 1: Power Plant Optimization and Economics; November 2000 -- May 2005  

DOE Green Energy (OSTI)

Report regarding a Stage 1 Study to further develop the concept of the Solar Trough Organic Rankine Cycle Electricity Systems (STORES).

Prabhu, E.

2006-03-01T23:59:59.000Z

312

Film Cooling, Heat Transfer and Aerodynamic Measurements in a Three Stage Research Gas Turbine  

E-Print Network (OSTI)

The existing 3-stage turbine research facility at the Turbomachinery Performance and Flow Research Laboratory (TPFL), Texas A and M University, is re-designed and newly installed to enable coolant gas injection on the first stage rotor platform to study the effects of rotation on film cooling and heat transfer. Pressure and temperature sensitive paint techniques are used to measure film cooling effectiveness and heat transfer on the rotor platform respectively. Experiments are conducted at three turbine rotational speeds namely, 2400rpm, 2550rpm and 3000rpm. Interstage aerodynamic measurements with miniature five hole probes are also acquired at these speeds. The aerodynamic data characterizes the flow along the first stage rotor exit, second stage stator exit and second stage rotor exit. For each rotor speed, film cooling effectiveness is determined on the first stage rotor platform for upstream stator-rotor gap ejection, downstream discrete hole ejection and a combination of upstream gap and downstream hole ejection. Upstream coolant ejection experiments are conducted for coolant to mainstream mass flow ratios of MFR=0.5%, 1.0%, 1.5% and 2.0% and downstream discrete hole injection tests corresponding to average hole blowing ratios of M = 0.5, 0.75, 1.0, 1.25, 1.5, 1.75 and 2.0 for each turbine speed. To provide a complete picture of hub cooling under rotating conditions, experiments with simultaneous injection of coolant gas through upstream and downstream injection are conducted for an of MFR=1% and Mholes=0.75, 1.0 and 1.25 for the three turbine speeds. Heat transfer coefficients are determined on the rotor platform for similar upstream and downstream coolant injection. Rotation is found to significantly affect the distribution of coolant on the platform. The measured effectiveness magnitudes are lower than that obtained with numerical simulations. Coolant streams from both upstream and downstream injection orient themselves towards the blade suction side. Passage vortex cuts-off the coolant film for the lower MFR for upstream injection. As the MFR increases, the passage vortex effects are diminished. Effectiveness was maximum when Mholes was closer to one as the coolant ejection velocity is approximately equal to the mainstream relative velocity for this blowing ratio. Heat transfer coefficient and film cooling effectiveness increase with increasing rotational speed for upstream rotor stator gap injection while for downstream hole injection the maximum effectiveness and heat transfer coefficients occur at the reference speed of 2550rpm.

Suryanarayanan, Arun

2009-05-01T23:59:59.000Z

313

HVAC Equipment Design Options for Near-Zero-Energy Homes (NZEH) -A Stage 2 Scoping Assessment  

SciTech Connect

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. This report describes results of a scoping assessment of HVAC system options for NZEH homes. ORNL has completed a preliminary adaptation, for consideration by The U.S. Department of Energy, Energy Efficiency and Renewable Energy Office, Building Technologies (BT) Program, of Cooper's (2001) stage and gate planning process to the HVAC and Water Heating element of BT's multi-year plan, as illustrated in Figure 1. In order to adapt to R&D the Cooper process, which is focused on product development, and to keep the technology development process consistent with an appropriate role for the federal government, the number and content of the stages and gates needed to be modified. The potential federal role in technology development involves 6 stages and 7 gates, but depending on the nature and status of the concept, some or all of the responsibilities can flow to the private sector for product development beginning as early as Gate 3. In the proposed new technology development stage and gate sequence, the Stage 2 'Scoping Assessment' provides the deliverable leading into the Gate 3 'Scoping Assessment Screen'. This report is an example of a Stage 2 deliverable written to document the screening of options against the Gate 3 criteria and to support DOE decision making and option prioritization. The objective of this scoping assessment was to perform a transparent evaluation of the HVAC system options for NZEH based on the applying the Gate 3 criteria uniformly to all options.

Baxter, Van D [ORNL

2005-11-01T23:59:59.000Z

314

GEOPHYSICAL INVESTIGATIONS OF THE ARCHAEOLOGICAL RESOURCES AT THE POWELL STAGE STATION  

SciTech Connect

Within the boundaries of the Idaho National Laboratory, an ongoing archaeological investigation of a late 19th century stage station was expanded with the use of Electro-Magnetic and Magnetic geophysical surveying. The station known as the Powell Stage Station was a primary transportation hub on the Snake River Plain, bridging the gap between railroad supply depots in Blackfoot, Idaho and booming mining camps throughout Central Idaho. Initial investigations have shown a strong magnetic signature from a buried road and previously unknown features that were not detected by visual surface surveys. Data gained from this project aids in federally directed cultural resource and land management and use requirements and has contributed additional information for archeological interpretation and cultural resource preservation.

Hollie K. Gilbert; Julie B. Braun; Brenda R. Pace; Gail Heath; Clark Scott

2009-04-01T23:59:59.000Z

315

Environmental performance of air staged combustor with flue gas recirculation to burn coal/biomass  

DOE Green Energy (OSTI)

The environmental and thermal performance of a 1.07 m diameter, 440 kW atmospheric fluidized bed combustor operated at 700{degrees}C-920{degrees}C and burning coal was studied. Flue gas recirculation was incorporated to enhance the thermal performance and air staging was used to control emissions of SO{sub 2}, CO, NO{sub x} and N{sub 2}O. Studies focused on the effect of excess air, firing rate, and use of sorbent on system performance. The recirculation-staging mode with limestone had the highest thermal efficiency (0.67) using the firing equation. Emission data showed that flue gas recirculation (ratio of 0.7) significantly reduced NO{sub x} emissions; and that use of limestone sorbent at a Ca/S ratio of 3 reduced SO{sub 2} emissions by 64% to approximately 0.310 g/MJ.

Anuar, S.H.; Keener, H.M.

1995-12-31T23:59:59.000Z

316

Overlapping of the devolatilization and char combustion stages in the burning of coal particles  

SciTech Connect

The oxygen content at the surface of a fuel particle can significantly exceed zero during the devolatilization stage of combustion, despite the flux of volatiles from the surface and also gas phase reactions. This implies that char oxidation can take place simultaneously. This overlapping of the devolatilization and char combustion stages is studied by modeling. The rates of gas phase reactions around the particle influence the availability of oxygen at the surface of a burning particle and they are accounted for by using a two-step global model for combustion of volatiles. The effects of particle size, ambient temperature, and oxygen concentration on the degree of overlap are studied. The study provides theoretical and experimental evidence that the combustion time of a particle does not always increase with its size at constant ambient conditions, but there can be a specific particle size giving a maximum combustion rate.

Veras, C.A.G. [Escola Politecnica da Univ., Sao Paulo (Brazil). Dept. de Engenharia Mecanica; Saastamoinen, J.; Aho, M. [VTT Energy, Jyvaeskylae (Finland); Carvalho, J.A. Jr. [Inst. Nacional de Pesquisas Espaciais, Cachoeira Paulista, Sao Paulo (Brazil)

1999-03-01T23:59:59.000Z

317

Effects of Flaming Gorge Dam hydropower operations on downstream flow, stage, and sediment transport  

DOE Green Energy (OSTI)

Hydropower operations at Flaming Gorge Dam, located on the Green River in Utah, can produce rapid downstream changes in flow and stage. These changes can in turn affect sediment transport and ecologic resources below the dam. To evaluate these effects, four hydropower operational scenarios with varying degrees of hydropower-release fluctuations were examined. This study demonstrates that the combined use of river-flow routing, water-surface profile, and sediment-transport models can provide useful information for evaluating the potential impacts of hydropower-operations on ecological and other resources downstream of the dam. Study results show that flow fluctuations may or may not persist for a long distance, depending on the initial magnitude of fluctuation and the duration of hydropower peaking. Stage fluctuations depend not only on flow fluctuations but also on river channel characteristics, such as channel width and longitudinal slope.

Yin, S.C.L.; Tomasko, D.; Cho, H.E.; Williams, G. [Argonne National Lab., IL (United States); McCoy, J.; Palmer, C. [USDOE Western Area Power Administration, Salt Lake City, UT (United States)

1996-11-01T23:59:59.000Z

318

Multi-stage selection catalytic reduction of NO{sub x} in lean burn engine exhaust  

DOE Green Energy (OSTI)

Recent studies suggest that the conversion of NO to NO{sub 2} is an important intermediate step in the selective catalytic reduction (SCR) of NO{sub x} to N{sub 2}. These studies have prompted the development of schemes that use an oxidation catalyst to convert NO to NO{sub 2}, followed by a reduction catalyst to convert NO{sub 2} to N{sub 2}. Multi-stage SCR offers high NO{sub x} reduction efficiency from catalysts that, separately, are not very active for reduction of NO, and alleviates the problem of selectivity between NO reduction and hydrocarbon oxidation. A plasma can also be used to oxidize NO to NO{sub 2}. This paper compares the multi-stage catalytic scheme with the plasma-assisted catalytic scheme for reduction of NO{sub x} in lean-bum engine exhausts. The advantages of plasma oxidation over catalytic oxidation are presented.

Penetrante, B.M.; Hsiao, M.O.; Merritt, B.T.; Vogling, E.

1998-01-26T23:59:59.000Z

319

Validation of a PC based program for single stage absorption heat pump. Final report  

Science Conference Proceedings (OSTI)

An interactive computer code was developed to evaluate single stage absorption heat pump performance for temperature amplifier and heat amplifier modes using water as the refrigerant. This program performs the cycle calculations for single stage cycles based on the polynomial expressions developed to correlate experimental vapor-liquid-equilibrium (VLE) and specific enthalpy-concentration data for LiBr/water and (Li, K, Na)NO{sub 3}/water systems as well as the properties of pure water. The operating parameters obtained by this program were tested against mass and energy balances in documented cases and the results show that the maximum deviation between coefficient of performance (COP) values obtained by this software and the ones previously calculated is less than 3%. In addition, this program was used to study the effect of solution temperature leaving the absorber on the other operating parameters. This type of analysis could be used to improve and optimize cycle design. 4 refs.

Zaltash, A.; Ally, M.R.

1991-09-01T23:59:59.000Z

320

Validation of a PC based program for single stage absorption heat pump  

SciTech Connect

An interactive computer code was developed to evaluate single stage absorption heat pump performance for temperature amplifier and heat amplifier modes using water as the refrigerant. This program performs the cycle calculations for single stage cycles based on the polynomial expressions developed to correlate experimental vapor-liquid-equilibrium (VLE) and specific enthalpy-concentration data for LiBr/water and (Li, K, Na)NO{sub 3}/water systems as well as the properties of pure water. The operating parameters obtained by this program were tested against mass and energy balances in documented cases and the results show that the maximum deviation between coefficient of performance (COP) values obtained by this software and the ones previously calculated is less than 3%. In addition, this program was used to study the effect of solution temperature leaving the absorber on the other operating parameters. This type of analysis could be used to improve and optimize cycle design. 4 refs.

Zaltash, A.; Ally, M.R.

1991-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Alternatives generation and analysis for the Phase I intermediate waste feed staging system design requirements  

SciTech Connect

This alternatives generation and analysis (AGA) addresses the question: What is the design basis for the facilities required to stage low-level waste (LLW) feed to the Phase I private contractors? Alternative designs for the intermediate waste feed staging system were developed, analyzed, and compared. Based on these analyses, this document recommends installing mixer pumps in the central pump pit of double-shell tanks 241-AP-102 and 241-AP-104. Also recommended is installing decant/transfer pumps at these tanks. These recommendations have clear advantages in that they provide a low shedule impact/risk and the highest operability of all the alternatives investigated. This revision incorporates comments from the decision board.

Claghorn, R.D., Fluor Daniel Hanford

1997-02-06T23:59:59.000Z

322

A multifrontal approach for simulating equilibrium-stage processes on supercomputers  

E-Print Network (OSTI)

For the simulation of complex equilibrium-stage operations, the overall computing time is often dominated by the solution of large, sparse systems of linear equations. If the modeling equations for such separation systems are grouped by equilibrium stage, the linear systems take on an almost banded form with relatively few off-band elements. We present here a simple multifrontal approach for solving such linear systems on supercomputers. Like the frontal approach, these solvers exploit supercomputing technology by treating parts of the sparse matrix as full, thereby allowing arith-metic operations to be performed with highly vectorized and optimized BLAS dense matrix kernels. In addition, these solvers exploit the almost banded structure of the distillation matrices by using a modified threshold pivot search strategy that attempts to maintain the desirable structure of the matrix during the solution process. Results indicate that this multifrontal approach provides substantial savings in solution time compared to other techniques often used. 1

Jayarama U. Mallya; Mark A. Stadtherr

1997-01-01T23:59:59.000Z

323

Two Stage Liquefaction With Illinois 6 Coal: Volume 1: Run 247  

Science Conference Proceedings (OSTI)

This report presents the operating results for Run 247 at the Advanced Coal Liquefaction R&D Facility in Wilsonville, Alabama. This run operated in a Two-Stage Liquefaction (TSL) mode using Illinois No. 6 bituminous coal from the Burning Star mine. The primary run objective was to obtain performance data for the TSL system and the individual process units with particular emphasis on hydrotreating catalyst performance. Secondary objectives were to demonstrate operability for the system and the respective ...

1991-03-01T23:59:59.000Z

324

Russian refiner tests new one-stage H[sub 2]S removal process  

Science Conference Proceedings (OSTI)

The Institute of Catalysis, Novosibirsk, Russia, has developed a new technology for purifying gas streams containing hydrogen sulfide. The one-stage process was tested at BashSKTP Concern Grozneftekhim's refinery in Ufa, Russia, near the southern Ural Mountains. In a pilot-size reactor, the process achieved 99% conversion of total H[sub 2]S and 98% selectivity to sulfur. The process and test results are described briefly.

Not Available

1994-03-07T23:59:59.000Z

325

Fuel injection staged sectoral combustor for burning low-BTU fuel gas  

SciTech Connect

A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone; this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe; swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone; this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.

Vogt, Robert L. (Schenectady, NY)

1981-01-01T23:59:59.000Z

326

Fuel injection staged sectoral combustor for burning low-BTU fuel gas  

SciTech Connect

A high-temperature combustor for burning low-BTU coal gas in a gas turbine is described. The combustor comprises a plurality of individual combustor chambers. Each combustor chamber has a main burning zone and a pilot burning zone. A pipe for the low-BTU coal gas is connected to the upstream end of the pilot burning zone: this pipe surrounds a liquid fuel source and is in turn surrounded by an air supply pipe: swirling means are provided between the liquid fuel source and the coal gas pipe and between the gas pipe and the air pipe. Additional preheated air is provided by counter-current coolant air in passages formed by a double wall arrangement of the walls of the main burning zone communicating with passages of a double wall arrangement of the pilot burning zone: this preheated air is turned at the upstream end of the pilot burning zone through swirlers to mix with the original gas and air input (and the liquid fuel input when used) to provide more efficient combustion. One or more fuel injection stages (second stages) are provided for direct input of coal gas into the main burning zone. The countercurrent air coolant passages are connected to swirlers surrounding the input from each second stage to provide additional oxidant.

Vogt, Robert L. (Schenectady, NY)

1985-02-12T23:59:59.000Z

327

Two stage, low temperature, catalyzed fluidized bed incineration with in situ neutralization for radioactive mixed wastes  

Science Conference Proceedings (OSTI)

A two stage, low temperature, catalyzed fluidized bed incineration process is proving successful at incinerating hazardous wastes containing nuclear material. The process operates at 550{degrees}C and 650{degrees}C in its two stages. Acid gas neutralization takes place in situ using sodium carbonate as a sorbent in the first stage bed. The feed material to the incinerator is hazardous waste-as defined by the Resource Conservation and Recovery Act-mixed with radioactive materials. The radioactive materials are plutonium, uranium, and americium that are byproducts of nuclear weapons production. Despite its low temperature operation, this system successfully destroyed poly-chlorinated biphenyls at a 99.99992% destruction and removal efficiency. Radionuclides and volatile heavy metals leave the fluidized beds and enter the air pollution control system in minimal amounts. Recently collected modeling and experimental data show the process minimizes dioxin and furan production. The report also discusses air pollution, ash solidification, and other data collected from pilot- and demonstration-scale testing. The testing took place at Rocky Flats Environmental Technology Site, a US Department of Energy facility, in the 1970s, 1980s, and 1990s.

Wade, J.F.; Williams, P.M.

1995-05-17T23:59:59.000Z

328

Temperature control in a 30 stage, 5-cm Centrifugal Contactor Pilot Plant  

Science Conference Proceedings (OSTI)

Temperature profile testing was performed using a 30 stage 5-cm centrifugal contactor pilot plant. These tests were performed to evaluate the ability to control process temperature by adjusting feed solution temperatures. This would eliminate the need for complex jacketed heat exchanger installation on the centrifugal contactors. Thermocouples were installed on the inlet and outlets of each stage, as well as directly in the mixing zone of several of the contactor stages. Lamp oil, a commercially available alkane mixture of C14 to C18 chains, and tap water adjusted to pH 2 with nitric acid were the solution feeds for the temperature profile testing. Temperature data profiles for an array of total throughputs and contactor rpm values for both single-phase and two-phase systems were collected with selected profiles. The total throughput ranged from 0.5-1.4 L/min with rotor speeds from 3500-4000 rpm. Inlet solution temperatures ranging from ambient up to 50 °C were tested. Results of the two-phase temperature profile testing are detailed

Jack D. Law; Troy G. Garn; David H. Meikrantz

2009-09-01T23:59:59.000Z

329

New Single-Stage PFC Regulator Using the Sheppard-Taylor Topology  

E-Print Network (OSTI)

This paper describes a new usage of the dc/dc converter developed by D. I. Sheppard and B. E. Taylor in 1983 for achieving high power factor and output regulation. This converter may be viewed as a cascade of a modified boost stage and a buck stage, with the two stages sharing the same active switch. Two possible operation regimes are described. In the first regime, the converter's input part, which is a modified boost converter, operates in discontinuous mode, and the output part, which is a buck converter, operates in continuous mode. In this regime, high power factor is naturally achieved, and the output voltage is regulated by duty-cycle modulation via a simple output feedback. In the second regime, the input part operates in continuous mode, and the output part operates in discontinuous mode, with duty-cycle modulation maintaining a high power factor and frequency modulation regulating the output. Some comparisons between the Sheppard-Taylor converter and conventional boost and bu...

C. K. Tse; Senior Member; M. H. L. Chow

1998-01-01T23:59:59.000Z

330

Developing an inventor support service which performs early stage market and manufacturing evaluations. [Final Report  

SciTech Connect

American businesses are learning the difficult high cost lesson of ignoring production and market factors (producibility, unit product cost (UPC), marketability, etc) during the engineering design phase of product development. Studies have shown that the Japanese spend three times as long as Americans in the design feasibility and decision process of new product introductions and one third the amount of time in the implementation of those products. There is a 20 to 1 cost benefit on effort applied in the design phase versus the production phase of the product life cycle. The number one goal of this project was to establish an organization that has, as one of its purposes, the providing of services responsive to the needs of independent inventors. The number two goal was to demonstrate the value of providing marketing and manufacturing counsel at an early stage in the product development process. The first study goal was met by providing the materials and information necessary to establish an evaluation team and an organization to handle such evaluations. The second study goal was met by demonstrating the impact of early market analysis and manufacturing considerations on product design and therefore on the description of the invention for four different inventions. These inventions were selected at various stages of development. Regardless of stage of development, the marketing and manufacturing reviews resulted in significant changes in design and/or market positioning.

Not Available

1991-10-01T23:59:59.000Z

331

Two-stage acceleration of protons from relativistic laser-solid interaction  

Science Conference Proceedings (OSTI)

A two-stage proton acceleration scheme using present-day intense lasers and a unique target design is proposed. The target system consists of a hollow cylinder, inside which is a hollow cone, which is followed by the main target with a flat front and dish-like flared rear surface. At the center of the latter is a tapered proton layer, which is surrounded by outer proton layers at an angle to it. In the first acceleration stage, protons in both layers are accelerated by target normal sheath acceleration. The center-layer protons are accelerated forward along the axis and the side protons are accelerated and focused towards them. As a result, the side-layer protons radially compress as well as axially further accelerate the front part of the accelerating center-layer protons in the second stage, which are also radially confined and guided by the field of the fast electrons surrounding them. Two-dimensional particle-incell simulation shows that a 79fs 8.5 Multiplication-Sign 10{sup 20} W/cm{sup 2} laser pulse can produce a proton bunch with {approx} 267MeV maximum energy and {approx} 9.5% energy spread, which may find many applications, including cancer therapy.

Liu Jinlu; Sheng, Z. M.; Zheng, J.; Wang, W. M.; Yu, M. Y.; Liu, C. S.; Zhang, J. [Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240, China and Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China); Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China); Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China); Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China) and Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany); East-West Space Science Center, University of Maryland, College Park, MD (United States); Key Laboratory for Laser Plasmas (Ministry of Education) and Department of Physics, Shanghai Jiao Tong University, Shanghai 200240 (China) and Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)

2012-12-21T23:59:59.000Z

332

Hazardous Waste Code Determination for First/Second-Stage Sludge Waste Stream (IDCs 001, 002, 800)  

Science Conference Proceedings (OSTI)

This document, Hazardous Waste Code Determination for the First/Second-Stage Sludge Waste Stream, summarizes the efforts performed at the Idaho National Engineering and Environmental Laboratory (INEEL) to make a hazardous waste code determination on Item Description Codes (IDCs) 001, 002, and 800 drums. This characterization effort included a thorough review of acceptable knowledge (AK), physical characterization, waste form sampling, chemical analyses, and headspace gas data. This effort included an assessment of pre-Waste Analysis Plan (WAP) solidified sampling and analysis data (referred to as preliminary data). Seventy-five First/Second-Stage Sludge Drums, provided in Table 1-1, have been subjected to core sampling and analysis using the requirements defined in the Quality Assurance Program Plan (QAPP). Based on WAP defined statistical reduction, of preliminary data, a sample size of five was calculated. That is, five additional drums should be core sampled and analyzed. A total of seven drums were sampled, analyzed, and validated in compliance with the WAP criteria. The pre-WAP data (taken under the QAPP) correlated very well with the WAP compliant drum data. As a result, no additional sampling is required. Based upon the information summarized in this document, an accurate hazardous waste determination has been made for the First/Second-Stage Sludge Waste Stream.

Arbon, R.E.

2001-01-31T23:59:59.000Z

333

Running fermi with one-stage compressor: advantages, layout,performance  

Science Conference Proceedings (OSTI)

CBP-Tech Note-345 (July 2005), devoted to a study of microbunching instability in FERMI@ELETTRA linac quotes '...the above analysis shows that the most of the gain in microbunching instability occurs after BC2, i.e. after transformation of the energy modulation to the spatial modulation that takes place in BC2. It is possible to avoid that if we use only BC1 for all our needs for bunch compression. There are also additional advantages for a mitigation of the microbunching instability related to that. First, we would need to increase R56 in BC1 (for given energy chirp in the electron beam). Second, a relative energy spread is significantly larger at BC1 than at BC2. Both these factors would contribute to instability suppression due to increased Landau damping effect.' One additional argument was however missed in that report. Instability smearing due to finite emittance is stronger in BC1 simply because the geometrical emittance is larger than in BC2. In spite of the considerations in favor of a lattice with one-stage compressor, it was thought at the time that the two bunch compressors configuration was still preferable as it appeared difficult to obtain a flat-flat distribution at the end of the linac with only one bunch compressor. A flat-flat distribution has constant medium energy and a constant peak current along the electron bunch. Now, two years later and more studies behind, this problem is solvable. It has been demonstrated1 that shaping the intensity of the electron bunch at the injector using intensity modulation of the photocathode laser allows to use the linac structural wake fields to advantage to obtain a flat-flat distribution at the end of the linac in a two-stage compressor. This report shows that, using the back-tracking technique, it is possible to obtain a flat-flat distribution also in a single-stage compressor. Preliminary results of a study of the microbunching instability applied to the FERMI lattice with one-stage compressor are shown in this report . There is concern that the effect of jitter in accelerator parameters is more pronounced with one bunch compressor: the results of jitter studies are given and are compared with the case of a two-stage compressor.

Cornacchia, M.; Craievich, P.; Di Mitri, S.; Penco, G.; Venturini, M.; Zholents, A.

2007-05-25T23:59:59.000Z

334

Engineer Regulation 1110-2-1150  

E-Print Network (OSTI)

are electrical switchyards (which transform the voltage from the level at which it is generated to the level

US Army Corps of Engineers

335

Combustion characterization of coals for industrial applications. Third quarterly progress report, 1 October 1982-31 December 1982. [Staged combustion  

Science Conference Proceedings (OSTI)

Primary stage stoichiometries of 15, 30, 50, 60, 70, 90 and an unstaged baseline test were employed. The effect of the primary stage stoichiometry on NO/sub x/ formation is presented in Figure 3. Results indicate the maximum NO/sub x/ reduction is at a primary stage stoichiometry of about 50%. Single stage baseline emissions were 498 ppM compared to the optimum NO/sub x/ emissions of 282 ppM from a premixed first stage stoichiometry of 50%. In other words, 43% NO/sub x/ emission reduction was obtained in the CMHF at 20% overall excess air level. The optimum primary stage stoichiometry for NO/sub x/ emissions can be explained as follows: During the combustion process, some fuel nitrogen forms volatile nitrogen species and some remains in the char. In an oxygen deficient primary stage, some volatile nitrogen will remain in as intermediate species such as HCN, CN, and NH/sub x/, some will react with oxygen to form nitrogen oxide (NO). The intermediate species can either be oxidized to NO/sub x/ in the secondary stage or react with NO to form harmless molecular nitrogen (N/sub 2/). If the primary stage is too air rich, these intermediate species will react with oxygen to form NO/sub x/. If, on the other hand, the primary stage is too fuel rich, most of these intermediate nitrogen species will remain unreacted since there is not enough oxygen or NO to react with. They, however, will be oxidized to NO/sub x/ in the secondary stage where oxygen becomes available. Therefore, an optimum primary stage stoichiometry exists, which provides an optimum amount of NO and intermediate nitrogen species favoring NO to N/sub 2/ conversion in the primary stage. The effect of excess air on NO/sub x/ emissions at the outlet of the furnace is shown in Figure 4. Results indicate that NO/sub x/ increases slowly with increasing excess air.

ya Nsakala, N.; Patel, R.L.; Lao, T.C.

1983-02-01T23:59:59.000Z

336

DOE/EA-1366; Environmental Assessment Santiam-Bethel Transmission Line Project (09/2001)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Preliminary Environmental Assessment Preliminary Environmental Assessment Santiam-Bethel Transmission Line Project Bonneville Power Administration September 2001 Santiam-Bethel Transmission Line Project Responsible Agency: U.S. Department of Energy, Bonneville Power Administration (BPA) Name of Proposed Project: Santiam-Bethel Transmission Line Project Abstract: Bonneville Power Administration proposes to rebuild the first 17 miles of the Santiam-Chemawa transmission line from Santiam Substation to the line's connection to Portland General Electric's Bethel Substation. BPA would replace the existing single-circuit 230-kilovolt (kV) line with towers that could support two circuits. The existing line supplies both Bethel Substation and BPA's Chemawa Substation. The new lines would eliminate

337

EIS-0477: San Juan Basin Energy Connect Project, San Juan County, New Mexico and La Plata County, Colorado  

Energy.gov (U.S. Department of Energy (DOE))

The Department of the Interior’s Bureau of Land Management is preparing this EIS to evaluate the environmental impacts of a proposal to construct a 230-kilovolt transmission line from the Farmington area in northwest New Mexico to Ignacio, Colorado, to relieve transmission constraints, serve new loads, and offer economic development through renewable energy development in the San Juan Basin. DOE’s Western Area Power Administration is a cooperating agency; the proposed transmission line would require an interconnection with Western's Shiprock Substation, near Farmington.

338

EIS-0433-S1: Keystone XL Pipeline SEIS (Montana, South Dakota, and Nebraska)  

Energy.gov (U.S. Department of Energy (DOE))

This EIS analyzes the potential environmental impacts of a revised proposal for the Keystone XL pipeline and related facilities. The proposed facilities would transport crude oil from the Western Canadian Sedimentary Basin and the Williston Basin to existing pipeline facilities near Steele City, Nebraska, for onward transport to markets in the Texas Gulf Coast area. DOE is a cooperating agency. DOE's Western Area Power Administration has jurisdiction over certain proposed transmission facilities relating to the proposal, including construction and operation of a portion of a 230-kilovolt transmission line and construction and operation of two new substations and the expansion of six existing substations.

339

Barriers to the Implementation of Surveillance for Stage I Testicular Seminoma  

Science Conference Proceedings (OSTI)

Purpose: Postorchiectomy adjuvant radiotherapy (RT) for Stage I seminoma can be associated with long-term toxicity, and management strategies with a lower treatment burden achieve the same excellent cure rate. Because studies suggest that radiation oncologists in the United States continue to recommend RT for these patients, we sought to identify factors associated with management recommendations. Methods and Materials: We conducted a one-time internet-based survey among 491 randomly selected American radiation oncologists self-described as specializing in genitourinary oncology. Results: Response rate was 53% (n = 261). Forty-nine percent of respondents worked in university-affiliated practices. Sixty-two percent of respondents always/usually recommended adjuvant RT for patients with Stage I seminoma, whereas 21% always/usually recommended surveillance and 3% always/usually recommended chemotherapy. One third (33%) expressed concerns that patients who experienced relapse during surveillance could not be salvaged. Although 88% of physicians were aware of an increased risk of second malignant neoplasms (SMN) after adjuvant RT, 85% underestimated its magnitude. Compared with physicians not typically recommending RT, physicians who always/usually recommended RT were more likely to believe that patients might not be salvaged at relapse during surveillance (p = 0.008) and were less aware of the association between RT and SMN (p = 0.04). Conclusions: Respondents who always/usually recommend postorchiectomy RT for patients with Stage I seminoma are more likely to underestimate late RT morbidity and to believe that surveillance is associated with increased mortality. Given the equivalent efficacy and reduced morbidity of surveillance compared with RT, our findings underscore the need for ongoing physician education to increase appropriate clinical implementation of surveillance strategies.

Arvold, Nils D. [Harvard Radiation Oncology Program, Harvard Medical School, Boston, Massachusetts (United States)] [Harvard Radiation Oncology Program, Harvard Medical School, Boston, Massachusetts (United States); Catalano, Paul J. [Department of Biostatistics, Harvard School of Public Health, and Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts (United States)] [Department of Biostatistics, Harvard School of Public Health, and Department of Biostatistics and Computational Biology, Dana-Farber Cancer Institute, Boston, Massachusetts (United States); Sweeney, Christopher J. [Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts (United States)] [Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts (United States); Hoffman, Karen E. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Nguyen, Paul L.; Balboni, Tracy A. [Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts (United States)] [Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts (United States); Fossa, Sophie D. [Department of Clinical Research, Norwegian Radium Hospital, Oslo University, Oslo (Norway)] [Department of Clinical Research, Norwegian Radium Hospital, Oslo University, Oslo (Norway); Travis, Lois B. [Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York (United States)] [Department of Radiation Oncology, University of Rochester Medical Center, Rochester, New York (United States); Beard, Clair J., E-mail: cbeard@lroc.harvard.edu [Department of Radiation Oncology, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, Massachusetts (United States)

2012-10-01T23:59:59.000Z

340

Extents of alkane combustion during rapid compression leading to single and two stage ignition  

DOE Green Energy (OSTI)

Extents of reactant consumption have been measured during the course of spontaneous ignition following rapid compression of N-pentane and N-heptane and also of PRF 60 (N-heptane = i-octane, 2.2.4 trimethylpentane) in stoichiometric mixtures with air. Compressed gas temperatures of 720-750 K and 845-875 K were studied at reactant densities of 131 mol m{sup minus 3}. At the lower gas temperature there was no evidence of reactant consumption during the course of the compression stroke. Two-stage ignition occurred at these temperatures, but only modest proportions of n-pentane were consumed during the first stage (< 15%) whereas about 40% of proportions of n- heptane reacted under the same conditions. At the higher compressed gas temperature the oxidation of n-pentane began only after the piston had stopped, whereas more than 30% of the n-heptane had already been consumed in the final stage of the compression stroke. The behavior of the PRF 60 mixture differed somewhat from that of N- pentane despite the similarly of the research octane numbers. Although there was a preferential oxidation of n-heptane at T{sub c} = 850K, which persisted throughout the early development of spontaneous ignition during the post-compression period, oxidation of both components of the PRF 60 mixture began before the piston had stopped. Numerical simulations of the spontaneous ignition under conditions resembling those of the rapid compression experiments show that the predicted reactivity from detailed kinetics are consistent with the observed features. Insights into the kinetic interactions that give rise to the relative reactivities of the primary reference fuel components are established

Cox, A.; Griffiths, J.F.; Mohamed, C. [Leeds Univ. (United Kingdom). School of Chemistry; Curran, H.; Pitz, W.J.; Westbrook, C.K. [Lawrence Livermore National Lab., CA (United States)

1996-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

NETL: Robust and Energy Efficient Dual-Stage Membrane-Based Process for  

NLE Websites -- All DOE Office Websites (Extended Search)

Robust and Energy Efficient Dual-Stage Membrane-Based Process for Enhanced CO2 Capture Robust and Energy Efficient Dual-Stage Membrane-Based Process for Enhanced CO2 Capture Project No.: DE-FE0013064 Media and Process Technology, Inc is developing a "one-box process" that integrates the water-gas-shift (WGS) reaction in a membrane reactor (MR) with hydrogen recovery for CO2 capture in integrated gasification combined cycle (IGCC) power systems. The process utilizes previously developed hydrogen (H2)-selective carbon molecular sieve membranes (CMS) and novel palladium (Pd) and Pd-alloy membranes for efficient residual H2 recovery. The bench-scale system will operate with simulated syngas mixtures first, and then be evaluated with real syngas at the National Carbon Capture Center for performance and long-term operation stability. Coal-derived syngas, after quenching and particulate removal, will undergo tar and contaminant removal, carbon monoxide conversion via WGS with a sour shift catalyst, and H2 separation in a single step. The bulk of the H2 produced (with purity adequate for downstream power generation) will be recovered in the permeate stream of this novel WGS/MR. The retentate stream (containing the residual H2 and the bulk of CO2 produced), after undergoing a conventional cold gas clean up for the removal of tar and contaminants, will be sent for CO2 compression for storage or use. Through the CO2 compression train, the residual H2 will be further recovered with a highly selective-Pd alloy membrane. A high degree of H2 (and consequently CO2) recovery can be achieved with the two-step membrane process. The strengths of CMS and Pd membranes are fully utilized while their weaknesses are compensated-for by the synergy that is being created by this novel two-stage process.

342

Two-stage fixed-bed gasifier with selectable middle gas off-take point  

DOE Patents (OSTI)

A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.

Strickland, L.D.; Bissett, L.A.

1991-12-31T23:59:59.000Z

343

Unstable kinetic roughening during the island coalescence stage of sputtered tantalum films  

Science Conference Proceedings (OSTI)

Kinetic roughening of tantalum films during the initial growth stages has been studied by atomic force microscopy, scanning electron microscopy, and dynamic scaling theory. Different from the time-independent scaling behavior for continuous film growth, an intriguing unstable kinetic roughening occurs during island coalescence. In such case, roughness exponent {alpha} increases with growth time, accompanied by lower growth exponent {beta} and higher coarsening exponent {eta}. Detailed analysis of film surface morphology and simple phenomenological models suggests that this unstable behavior is related to the pronounced lateral growth of surface islands, which arises from the combined effect of the formation of grain boundary and the covering of heterogeneous substrate surface.

Yang, J. J.; Tang, J.; Liu, N. [Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064 (China); Ma, F.; Xu, K. W. [State Key Laboratory of Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049 (China); Tang, W. [State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054 (China)

2012-05-15T23:59:59.000Z

344

Clean Energy Finance: Challenges and Opportunities of Early-Stage Energy Investing (Presentation)  

SciTech Connect

Characterized by a changing landscape and new opportunities, today's increasingly complex energy decision space will need innovative financing and investment models to appropriately assess risk and profitability. This report provides an overview of the current state of clean energy finance across the entire spectrum but with a focus on early stage investing, and it includes insights from investors across all investment classes. Further, this report aims to provide a roadmap with the mechanisms, limitations, and considerations involved in making successful investments by identifying risks, challenges, and opportunities in the clean energy sector.

Heap, D.; Pless, J.; Aieta, N.

2013-12-01T23:59:59.000Z

345

Direct radiolabeling of antibody against stage specific embryonic antigen for diagnostic imaging  

DOE Patents (OSTI)

Antibodies against stage specific embryonic antigen-1 is radiolabeled by direct means with a radionuclide for use in detection of occult abscess and inflammation. Radiolabeling is accomplished by partial reduction of the disulfide bonds of the antibody using Sn(II), or using other reducing agents followed by the addition of Sn(II), removal of excess reducing agent and reduction by-products, and addition of a specified amount of radionuclide reducing agent, such as stannous tartrate. The resulting product may be stored frozen or lyophilized, with radiolabeling accomplished by the addition of the radionuclide. No Drawings

Rhodes, B.A.

1994-09-13T23:59:59.000Z

346

Direct radiolabeling of antibody against stage specific embryonic antigen for diagnostic imaging  

SciTech Connect

Antibody against stage specific embryonic antigen-1 is radiolabeled by direct means with a radionuclide for use in detection of occult abscess and inflammation. Radiolabeling is accomplished by partial reduction of the disulfide bonds of the antibody using Sn(II), or using other reducing agents followed by the addition of Sn(II), removal of excess reducing agent and reduction by-products, and addition of a specified amount of radionuclide reducing agent, such as stannous tartrate. The resulting product may be store frozen or lyophilized, with radiolabeling accomplished by the addition of the radionuclide.

Rhodes, Buck A. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

347

Two-stage fixed-bed gasifier with selectable middle gas off-take point  

DOE Patents (OSTI)

A two-stage fixed bed coal gasifier wherein an annular region is in registry with a gasification zone underlying a devolatilization zone for extracting a side stream of high temperature substantially tar-free gas from the gasifier. A vertically displaceable skirt means is positioned within the gasifier to define the lower portion of the annular region so that vertical displacement of the skirt means positions the inlet into the annular region in a selected location within or in close proximity to the gasification zone for providing a positive control over the composition of the side stream gas.

Strickland, Larry D. (Morgantown, WV); Bissett, Larry A. (Morgantown, WV)

1992-01-01T23:59:59.000Z

348

Temperature Profile Measurements in a Newly Constructed 30-Stage 5 cm Centrifugal Contactor pilot Plant  

Science Conference Proceedings (OSTI)

An annular centrifugal contactor pilot plant incorporating 30 stages of commercial 5 cm CINC V-02 units has been built and operated at INL during the past year. The pilot plant includes an automated process control and data acquisitioning system. The primary purpose of the pilot plant is to evaluate the performance of a large number of inter-connected centrifugal contactors and obtain temperature profile measurements within a 30-stage cascade. Additional solvent extraction flowsheet testing using stable surrogates is also being considered. Preliminary hydraulic testing was conducted with all 30 contactors interconnected for continuous counter-current flow. Hydraulic performance and system operational tests were conducted successfully but with higher single-stage rotor speeds found necessary to maintain steady interstage flow at flowrates of 1 L/min and higher. Initial temperature profile measurements were also completed in this configuration studying the performance during single aqueous and two-phase counter-current flow at ambient and elevated inlet solution temperatures. Temperature profile testing of two discreet sections of the cascade required additional feed and discharge connections. Lamp oil, a commercially available alkane mixture of C14 to C18 chains, and tap water adjusted to pH 2 were the solution feeds for all the testing described in this report. Numerous temperature profiles were completed using a newly constructed 30-stage centrifugal contactor pilot plant. The automated process control and data acquisition system worked very well throughout testing. Temperature data profiles for an array of total flowrates (FT) and contactor rpm values for both single-phase and two-phase systems have been collected with selected profiles and comparisons reported. Total flowrates (FT) ranged from 0.5-1.4 L/min with rotor speeds from 3500-4000 rpm. Solution inlet temperatures ranging from ambient up to 50° C were tested. Ambient temperature testing shows that a small amount of heat is added to the processed solution by the mechanical energy of the contactors. The temperature profiles match the ambient temperature of the laboratory but are nearly 10° C higher toward the middle of the cascade. Heated input solution testing provides temperature profiles with smaller temperature gradients and are more influenced by the temperature of the inlet solutions than the ambient laboratory temperature. The temperature effects of solution mixing, even at 4000 rpm, were insignificant in any of the studies conducted on lamp oil and water.

Troy G. Garn; Dave H. Meikrantz; Mitchell R. Greenhalgh; Jack D. Law

2008-09-01T23:59:59.000Z

349

Multiple-stage catalytic reforming with gravity-flowing dissimilar catalyst particles  

Science Conference Proceedings (OSTI)

A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones in each of which the catalyst particles are movable via gravity flow. Dissimilar catalyst particles are utilized in the reactor systems which share a common regenerating tower through which the catalyst particles are downwardly movable via gravity flow and in which the catalyst particles are regenerated in segregated fashion. Dissimilarity of the catalyst particles stems from a difference in activity, stability and selectivity characteristics. In turn, this difference may be attributed either to physical, or chemical distinctions between the two composites, or both.

Sikonia, J. G.; Bennett, R. W.

1985-02-12T23:59:59.000Z

350

Two-stage fluidized-bed/cyclonic agglomerating incinerator. Technology spotlight report  

Science Conference Proceedings (OSTI)

The two-stage fluidized-bed/cyclonic agglomerating incinerator combines and improves upon the fluidized-bed, agglomeration/ incineration-technology and the cyclonic-combustion technology developed at Institute of Gas Technolgy (IGT) over many years. The result is a unique and extremely flexible incinerator for solid, liquid, and gaseous wastes. The system can operate over a wide range of conditions and has a destruction and removal efficiency (DRE) greater than 99.99%. Solid inorganic contaminants are contained within aglassy matrix, rendering them benign and suitable for disposal in an ordinary landfill.

NONE

1995-08-01T23:59:59.000Z

351

Development and applications of a two-dimensional tip-tilting stage system with nanoradian-level positioning resolution  

SciTech Connect

In this paper, designs of a novel rotary weak-link stage for a vertical rotation axis and a two-dimensional tip-tilting system are presented. Applications of these new stage systems include: an advanced X-ray stereo imaging instrument for particle tracking velocimetry, an alignment stage system for hard X-ray nano-focusing Montel mirror optics, and an ultra-precision crystal manipulator for cryo-cooling optical cavities of an X-ray free-electron-laser oscillator (XFELO).

Shu, Deming [Argonne National Laboratory (ANL); Lee, Wah-Keat [Argonne National Laboratory (ANL); Liu, Wenjun [Argonne National Laboratory (ANL); Ice, Gene E [ORNL; Shvyd'ko, Yuri [Argonne National Laboratory (ANL); Kim, Kwang-Je [Argonne National Laboratory (ANL)

2011-01-01T23:59:59.000Z

352

Development and Applications of a Two-dimensional Tip-Tilting Stage System with Nanoradian-Level Positioning Resolution  

SciTech Connect

In this paper, designs of a novel rotary weak-link stage for a vertical rotation axis and a two-dimensional tip-tilting system are presented. Applications of these new stage systems include: an advanced X-ray stereo imaging instrument for particle tracking velocimetry, an alignment stage system for hard X-ray nano-focusing Montel mirror optics, and an ultra-precision crystal manipulator for cryo-cooling optical cavities of an X-ray free-electron-laser oscillator (XFELO).

Shu, Deming [Argonne National Laboratory (ANL); Lee, Wah-Keat [Argonne National Laboratory (ANL); Liu, Wenjun [Argonne National Laboratory (ANL); Ice, Gene E [ORNL; Shvyd'ko, Yuri [Argonne National Laboratory (ANL); Kim, Kwang-Je [Argonne National Laboratory (ANL)

2011-01-01T23:59:59.000Z

353

Tests of a two-stage, axial-flow, two-phase turbine  

SciTech Connect

A two-phase-flow turbine with two stages of axial-flow impulse rotors was tested with three different working-fluid mixtures at a shaft power of 30 kW. The turbine efficiency was 0.55 with nitrogen-and-water of 0.02 quality and 94 m/s velocity, 0.57 with Refrigerant 22 of 0.27 quality and 123 m/s velocity, and 0.30 with steam-and-water of 0.27 quality and 457 m/s velocity. The efficiencies with nitrogen-and-water and Refrigerant 22 were 86% of theoretical. At that fraction of theoretical, the efficiencies of optimized two-phase turbines would be in the low 60% range with organic working fluids and in the mid 50% range with steam-and-water. The recommended turbine design is a two-stage axial-flow impulse turbine followed by a rotary separator for discharge of separate liquid and gas streams and recovery of liquid pressure.

Elliott, D.G.

1982-12-15T23:59:59.000Z

354

A fiber damage model for early stage consolidation of metal-coated fibers  

Science Conference Proceedings (OSTI)

Continuous fiber reinforced titanium matrix composites (TMCs) possess combinations of specific modulus, strength, and creep resistance that are well suited for a variety of aerospace applications. Recent studies of the high temperature consolidation of titanium alloy coated {alpha}-alumina fiber tows and SiC monofilaments have both revealed the widespread occurrence of fiber bending and fracture during early stage consolidation. This damage was shown to arise from the bending of unaligned fibers during consolidation and was found to be affected by the mechanical behavior of the metal-metal contacts at fiber crossovers. To predict the incidence of fiber fracture during early stage high temperature consolidation, a time-temperature dependent micromechanical model incorporating the evolving contact geometry and mechanical behavior of both the metal matrix and the ceramic fibers has been combined with a statistical representation of crossovers in the pre-consolidated layup. The damage predictions are found to compare favorably with experimental results. The model has subsequently been used to explore the effects of fiber strength, matrix constitutive properties and the processing conditions upon the incidence of fiber fracture. It reveals the existence of a temperature dependent pressurization rate below which fracture is relatively unlikely. This critical pressure rate can be significantly increased by the enhanced superplasticity of the initially nanocrystalline coating.

Warren, J.; Elzey, D.M.; Wadley, H.N.G. [Univ. of Virginia, Charlottesville, VA (United States)

1997-03-01T23:59:59.000Z

355

Experimental development of a two-stage fluidized-bed/cyclonic agglomerating incinerator  

SciTech Connect

The Institute of Gas Technology (IGT) is conducting an experimental program to develop and test through pilot-plant scale of operation, IGT's two-stage fluidized-bed/cyclonic agglomerating incinerator (TSI). The TSI is based on combining the fluidized-bed agglomeration/gasification technology and the cyclonic combustion/incineration technology, which have been developed at IGT over many years. The TSI is a unique and extremely flexible combustor that can operate over a wide range of conditions in the fluidized-bed first stage from low temperature (desorption) to high temperature (agglomeration) including gasification of high-Btu wastes. The TSI can easily and efficiently destroy solid, liquid and gaseous organic wastes, while containing solid inorganic contaminants within an essentially non-leachable glassy matrix, suitable for disposal in an ordinary landfill. This paper presents the results of tests conducted in a batch, fluidized-bed bench-scale unit (BSU) with commercially available clean'' top soil and the same soil spiked with lead and chromium compounds. The objectives of these tests were to determine the operating conditions necessary to achieve soil agglomeration and to evaluate the leaching characteristics of the soil agglomerates formed. 7 refs., 7 figs., 6 tabs.

Mensinger, M.C.; Rehmat, A.; Bryan, B.G.; Lau, F.S. (Institute of Gas Technology, Chicago, IL (United States)); Shearer, T.L. (Environmental Protection Agency, Cincinnati, OH (United States)); Duggan, P.A. (Gas Research Inst., Chicago, IL (United States))

1991-01-01T23:59:59.000Z

356

Stage II endometrial carcinoma. Results and complications of a combined radiotherapeutic-surgical approach  

SciTech Connect

Since one third of the patients with Stage II endometrial carcinoma have occult extrauterine pelvic metastases at diagnosis, adequate treatment must include the pelvic lymph nodes and parametria. Eighty-three patients with Stage II endometrial carcinoma were treated between January 1964 and December 1983. Sixty-nine patients (83%) received combined whole-pelvic irradiation and surgery, five (6%) had surgery alone and nine (11%) had radiotherapy alone. Five-year actuarial survival rates were 67%, 60%, and 38%, respectively. No pelvic recurrence occurred in the 69 patients who received the combined therapy, and there was no vaginal recurrence in the 80 patients treated with intracavity radium. There was a significantly lower incidence of pelvic lymph node metastases (P = 0.03) in patients treated with preoperative irradiation. The median time to recurrence was 17 months, with 67% of the recurrences diagnosed before 2 years, and 88% within 5 years. Ten patients (12%) incurred severe complications and three died as a result. Whole-pelvic irradiation, intracavity radium, and hysterectomy are effective treatment for occult pelvic and vaginal disease.

Larson, D.M.; Copeland, L.J.; Gallager, H.S.; Kong, J.P.; Wharton, J.T.; Stringer, C.A.

1988-04-15T23:59:59.000Z

357

Electric and hybrid electric vehicles: A technology assessment based on a two-stage Delphi study  

DOE Green Energy (OSTI)

To address the uncertainty regarding future costs and operating attributes of electric and hybrid electric vehicles, a two stage, worldwide Delphi study was conducted. Expert opinions on vehicle attributes, current state of the technology, possible advancements, costs, and market penetration potential were sought for the years 2000, 2010, and 2020. Opinions related to such critical components as batteries, electric drive systems, and hybrid vehicle engines, as well as their respective technical and economic viabilities, were also obtained. This report contains descriptions of the survey methodology, analytical approach, and results of the analysis of survey data, together with a summary of other factors that will influence the degree of market success of electric and hybrid electric vehicle technologies. Responses by industry participants, the largest fraction among all the participating groups, are compared with the overall responses. An evaluation of changes between the two Delphi stages is also summarized. An analysis of battery replacement costs for various types is summarized, and variable operating costs for electric and hybrid vehicles are compared with those of conventional vehicles. A market penetration analysis is summarized, in which projected market shares from the survey are compared with predictions of shares on the basis of two market share projection models that use the cost and physical attributes provided by the survey. Finally, projections of market shares beyond the year 2020 are developed by use of constrained logit models of market shares, statistically fitted to the survey data.

Vyas, A.D.; Ng, H.K.; Santini, D.J.; Anderson, J.L.

1997-12-01T23:59:59.000Z

358

FINAL DESIGN OF ILC RTML EXTRACTION LINE FOR SINGLE STAGE BUNCH COMPRESSOR  

SciTech Connect

The use of single stage bunch compressor (BC) in the International Linear Collider (ILC) Damping Ring to the Main Linac beamline (RTML) requires new design for the extraction line (EL). The EL located downstream of the BC will be used for both an emergency abort dumping of the beam and the tune-up continuous train-by-train extraction. It must accept both compressed and uncompressed beam with energy spread of 3.54% and 0.15% respectively. In this paper we report the final design that allowed minimizing the length of such extraction line while offsetting the beam dumps from the main line by 5m distance required for acceptable radiation level in the service tunnel. Proposed extraction line can accommodate beams with different energy spreads at the same time providing the beam size suitable for the aluminum ball dump window. We described the final design of the ILC RTML extraction line located downstream of the new single-stage bunch compressor. The extraction line is only 24m long and is capable of accepting and transmitting 220kW of beam power. The EL can be used for both fast intra-train and continual extraction, and is capable of accepting both 0.15% and 3.54% energy spread beams at 5MeV and 4.37MeV respectively.

Seletskiy, S.; Solyak, N.

2011-03-28T23:59:59.000Z

359

Technical area status report for second-stage destruction and offgas treatment  

SciTech Connect

This report was sponsored by the Mixed Waste Integrated Program (MWIP), which was established by the Department of Energy (DOE), Office of Environmental Restoration and Waste Management (EM), Office of Technology Development (OTD). DOE/EM carries the charter to direct and coordinate waste management and site remediation throughout the DOE complex. Within EM, the OTD established the MWIP to identify and develop new technologies for treatment of DOE low-level mixed waste. This report represents the second TASR for the Second-Stage Destruction and Offgas Treatment technical area. This TASR updates technology information, a design methodology for air pollution control systems for mixed waste treatment, and technology development needs for DOE/EM. The TASRs form the basis of a technology development program that addresses the highest priority DOE environmental needs and is coordinated with other technology development efforts both inside and outside DOE. The main functions of the second-stage destruction and offgas treatment system are to treat the gaseous effluent from the primary treatment process to acceptable levels for release to the atmosphere. Specific functions include (1) destruction of volatile organics; (2) capture of particulate matter; (3) capture of volatile metals; (4) capture and control of volatile, condensed-phase, and solid-phase radionuclides; (5) control of acid gases; (6) NO{sub x} abatement; and (7) gas cooling and reheating as required to perform these functions.

French, N.B. [Sandia National Labs., Livermore, CA (United States); Dalton, J.D. [Science Applications International Corp., Idaho Falls, ID (United States); Vavruska, J. [Equinox Ltd., Santa Fe, NM (United States)

1994-08-01T23:59:59.000Z

360

Climatology-Calibrated Precipitation Analysis at Fine Scales: Statistical Adjustment of Stage IV towards CPC Gauge Based Analysis  

Science Conference Proceedings (OSTI)

Two widely used precipitation analyses are the CPC Unified Global Daily Gauge Analysis and Stage IV analysis based on quantitative precipitation estimate with multi-sensor observations. The Former is based on gauge records with a uniform quality ...

Dingchen Hou; Mike Charles; Yan Luo; Zoltan Toth; Yuejian Zhu; Roman Krzysztofowicz; Ying Lin; Pingping Xie; Dong-Jun Seo; Malaquias Pena; Bo Cui

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Novel use of a radiolabelled antibody against stage specific embryonic antigen for the detection of occult abscesses in mammals  

DOE Patents (OSTI)

The invention discloses improved reagents containing antibodies against stage specific embryonic antigen-1 antibodies and improved methods for detection of occult abscess and inflammation using the improved reagents. No Drawings

Thakur, M.L.

1990-04-17T23:59:59.000Z

362

A TIME ACCURATE PREDICTION OF THE VISCOUS FLOW IN A TURBINE STAGE INCLUDING A ROTOR IN MOTION.  

E-Print Network (OSTI)

??AbstractA TIME ACCURATE PREDICTION OF THE VISCOUS FLOW IN A TURBINE STAGE INCLUDING A ROTOR IN MOTIONBy Akamol ShavalikulThe actual flow field in a turbine… (more)

Shavalikul, Akamol

2009-01-01T23:59:59.000Z

363

Two Stage Vapor Compression Heat Pump with Solution Circuits: Catering to Simultaneous Chilling and Water Heating Needs  

E-Print Network (OSTI)

The benefits of using a two stage vapor compression heat pump with ammonia water solution circuits (VCHSC) to simultaneously provide chilled water for air conditioning and hot water for various uses are reviewed. The performance results for a two stage VCHSC are summarized. Experimental results indicate that the two stage VCHSC can achieve cooling coefficient of performances as high as 1.04 while pumping heat through a lift of 194°F (108°C). Comparison is made with a system consisting of a vapor compressor chiller and a gas fired furnace. The basis for comparison being primary energy usage, energy cost and initial cost of the systems. Energy saving at various operating conditions is estimated. In some cases, energy saving could be as high as 31%. Based on the national average energy prices in 1991 and the projected prices for 1995, suitable applications for the two stage VCHSC have been identified.

Rane, M. V.; Radermacher, R.

1992-04-01T23:59:59.000Z

364

Extratropical Transition of Western North Pacific Tropical Cyclones: An Overview and Conceptual Model of the Transformation Stage  

Science Conference Proceedings (OSTI)

Extratropical transition (ET) in the western North Pacific is defined here in terms of two stages: transformation, in which the tropical cyclone evolves into a baroclinic storm; and reintensification, where the transformed storm then deepens as ...

Peter M. Klein; Patrick A. Harr; Russell L. Elsberry

2000-08-01T23:59:59.000Z

365

Impact of the CE mark approval on exit opportunities and validation for early stage medical device companies  

E-Print Network (OSTI)

The aim of this thesis was to look at the impact of acquiring the CE marking approval on the outcome of early stage medical device companies, specifically its impact on strategic acquisition opportunities and on valuation. ...

Kothari, Ashish (Ashish Shrikant)

2011-01-01T23:59:59.000Z

366

Study of precision weak-link stage systems with large travel range and sub-nanometer-scale resolution  

SciTech Connect

To use x-ray optics with nanometer resolution limit, scanning x-ray nanoprobes with corresponding mechanical positioning capability need to be designed. In particular, positioning stages with both sub-nanometer resolution and a positioning/scanning range of several millimeters are required. Based on our design of precision weak-link stages with interferometric encoders for the Center for Nanoscale Materials (CNM) hard x-ray nanoprobe at the Advanced Photon Source (APS) Sector 26, we have developed a new two-dimensional (2-D) weak-link stage system for nanopositioning of a specimen holder. This system provides sub-nanometer resolution, coupled with sub-nanometer metrology at a travel range of several millimeters. The 2-D weak-link stage system is designed with high structure stiffness using laminar overconstrained weak-link mechanisms [4-6]. In this paper we present the study of a linear precision weak-link stage system with sub-centimeter travel range and sub-nanometer positioning resolution. Design of a rotary weak-link stage system with 10-nrad resolution and 10-degree-level travel range is also discussed in this paper.

Shu Deming [Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States); Maser, Jorg [Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439 (United States); Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)

2010-06-23T23:59:59.000Z

367

Versatile Collimating Crystal Stage for a Bonse-Hart USAXS Instrument  

SciTech Connect

An advanced ultra-small-angle X-ray scattering (USAXS) instrument, using the Bonse-Hart design and installed at APS, is a robust and reliable instrument, providing a scattering vector (q) range of nearly 4 decades (0.00015 to 1 Aa-1), an intensity dynamic range of up to 9 decades, standard-less absolute intensity calibration, and USAXS imaging capabilities. This type of instrument typically uses channel-cut crystals in both the collimating (before sample) and analyzing (after sample) stages. The optical surfaces of these crystals are finished by etching processes, which leave an orange-peel surface texture, which would compromise the USAXS imaging quality. Therefore optics with highly polished surfaces using separated crystals in both collimating and analyzing stages were developed. A novel design of the optics and mechanical stage uses a fixed gap between the two separated collimating crystals in which a triangular section of the first crystal is removed, allowing for a variable number (1, 2, 4, 6, or 8) of crystal reflections for X-ray energies between 7 and 19 keV. The number of reflections is selected by lateral translation of the collimating crystal pair. Rotational alignment of the second crystal in the pair by an artificial channel-cut crystal mechanism, implemented with a novel high-stiffness weak link actuated by both a picomotor and a piezo-electric transducer, provides the capability to align or adjust an assembly of crystals to achieve the same performance as a single channel-cut crystal with integral weak link. The arrangement of both crystals is held on a removable base that can be remounted with precision within the Si(111) rocking curve on a three-point kinematic mount. Additional tilt adjustments are also provided for initial alignment. This monochromator has proven to be highly robust with respect to motions and vibrations, as well as flexible with respect to selection of number of reflections, and its performance directly resulted in the highly reliable performance of the whole USAXS instrument.

Ilavsky, J.; Shu, D.; Jemian, P. R.; Long, G. G. [Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)

2007-01-19T23:59:59.000Z

368

Adjuvant Brachytherapy Removes Survival Disadvantage of Local Disease Extension in Stage IIIC Endometrial Cancer: A SEER Registry Analysis  

SciTech Connect

Purpose: To assess the role of radiotherapy (RT) in women with Stage IIIC endometrial cancer. Methods and Materials: The 17-registry Survival, Epidemiology, and End Results (SEER) database was searched for patients with lymph node-positive non-Stage IV epithelial endometrial cancer diagnosed and treated between 1988 and 1998. Two subgroups were identified: those with organ-confined Stage IIIC endometrial cancer and those with Stage IIIC endometrial cancer with direct extension of the primary tumor. RT was coded as external beam RT (EBRT) or brachytherapy (BT). Observed survival (OS) was reported with a minimum of 5 years of follow-up; the survival curves were compared using the log-rank test. Results: The therapy data revealed 611 women with Stage IIIC endometrial cancer during this period. Of these women, 51% were treated with adjuvant EBRT, 21% with EBRT and BT, and 28% with no additional RT (NAT). Of the 611 patients, 293 had organ-confined Stage IIIC endometrial cancer and 318 patients had Stage IIIC endometrial cancer with direct extension of the primary tumor. The 5-year OS rate for all patients was 40% with NAT, 56% after EBRT, and 64% after EBRT/BT. Adjuvant RT improved survival compared with NAT (p <0.001). In patients with organ-confined Stage IIIC endometrial cancer, the 5-year OS rate was 50% for NAT, 64% for EBRT, and 67% for EBRT/BT. Again, adjuvant RT contributed to improved survival compared with NAT (p = 0.02). In patients with Stage IIIC endometrial cancer and direct tumor extension, the 5-year OS rate was 34% for NAT, 47% for EBRT, and 63% for EBRT/BT. RT improved OS compared with NAT (p <0.001). Also, in this high-risk subgroup, adding BT to EBRT was superior to EBRT alone (p = 0.002). Conclusion: Women with Stage IIIC endometrial cancer receiving adjuvant EBRT and EBRT/BT had improved OS compared with patients receiving NAT. When direct extension of the primary tumor was present, the addition of BT to EBRT was even more beneficial.

Rossi, Peter J. [Department of Radiation Oncology, Emory University School of Medicine, Atlanta, GA (United States)], E-mail: rossi@radonc.emory.org; Jani, Ashesh B. [Department of Radiation Oncology, Emory University School of Medicine, Atlanta, GA (United States); Horowitz, Ira R. [Department of Obstetrics and Gynecology, Emory University School of Medicine, Atlanta, GA (United States); Johnstone, Peter A.S. [Department of Radiation Oncology, Emory University School of Medicine, Atlanta, GA (United States)

2008-01-01T23:59:59.000Z

369

Single stage to orbit mass budgets derived from propellant density and specific impulse  

DOE Green Energy (OSTI)

The trade between specific impulse (Isp) and density is examined in view of Single Stage To Orbit (SSTO) requirements. Mass allocations for vehicle hardware are derived from these two properties, for several propellant combinations and a dual-fuel case. This comparative analysis, based on flight-proven hardware, indicates that the higher density of several alternative propellants compensates for reduced Isp, when compared with cryogenic oxygen and hydrogen. Approximately half the orbiting mass of a rocket- propelled SSTO vehicle must be allocated to propulsion hardware and residuals. Using hydrogen as the only fuel requires a slightly greater fraction of orbiting mass for propulsion, because hydrogen engines and tanks are heavier than those for denser fuels. The advantage of burning both a dense fuel and hydrogen in succession depends strongly on tripropellant engine weight. The implications of the calculations for SSTO vehicle design are discussed, especially with regard to the necessity to minimize non-tankage structure.

Whitehead, J.C.

1996-06-06T23:59:59.000Z

370

Removal of oxides of nitrogen from gases in multi-stage coal combustion  

DOE Patents (OSTI)

Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor.

Mollot, D.J.; Bonk, D.L.; Dowdy, T.E.

1996-12-31T23:59:59.000Z

371

Stage III nodular lymphoreticular tumors (non-Hodgkin's lymphoma): results of central lymphatic irradiation  

Science Conference Proceedings (OSTI)

Since 1969, 29 previously untreated patients with Stage III nodular malignant lymphoreticular (MLT) have received total central lymphatic (TCL) irradiation. The volume irradiated included the entire abdomen, Waldeyer's ring, and preauricular nodes in addition to the usual regions encompassed by total nodal irradiation. Doses of 2000--3000 rads in three to six weeks were delivered to the nodal regions, liver, and spleen; fraction sizes ranged from 100 to 180 rads. Patients have been followed from one to ten years (median six years). The actuarial survival is 78% at five years, and the disease-free survival is 61%. There is no difference in disease-free survival of the patients with poorly differentiated lymphocytic vs. those with histiocytic or mixed cytology. Men and women had disease-free survivals of 82% and 43%, respectively. The long-term follow-up of these patients indicates that prolonged disease-free intervals are common after TCL irradiation, and some patients may be cured.

Cox, J.D.; Komaki, R.; Kun, L.E.; Wilson, J.F.; Greenberg, M.

1981-05-01T23:59:59.000Z

372

Policy Building Blocks: Helping Policymakers Determine Policy Staging for the Development of Distributed PV Markets: Preprint  

DOE Green Energy (OSTI)

There is a growing body of qualitative and a limited body of quantitative literature supporting the common assertion that policy drives development of clean energy resources. Recent work in this area indicates that the impact of policy depends on policy type, length of time in place, and economic and social contexts of implementation. This work aims to inform policymakers about the impact of different policy types and to assist in the staging of those policies to maximize individual policy effectiveness and development of the market. To do so, this paper provides a framework for policy development to support the market for distributed photovoltaic systems. Next steps include mathematical validation of the framework and development of specific policy pathways given state economic and resource contexts.

Doris, E.

2012-04-01T23:59:59.000Z

373

Removal of oxides of nitrogen from gases in multi-stage coal combustion  

SciTech Connect

Polluting NO.sub.x gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO.sub.x gases are removed is directed to introducing NO.sub.x -free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor.

Mollot, Darren J. (Morgantown, WV); Bonk, Donald L. (Louisville, OH); Dowdy, Thomas E. (Orlando, FL)

1998-01-01T23:59:59.000Z

374

Fluxes in ;Free; and Total Zinc Are Essential for Progression of Intraerythrocytic Stages of Plasmodium falciparum  

Science Conference Proceedings (OSTI)

Dynamic fluxes in the concentration of ions and small molecules are fundamental features of cell signaling, differentiation, and development. Similar roles for fluxes in transition metal concentrations are less well established. Here, we show that massive zinc fluxes are essential in the infection cycle of an intracellular eukaryotic parasite. Using single-cell quantitative imaging, we show that growth of the blood-stage Plasmodium falciparum parasite requires acquisition of 30 million zinc atoms per erythrocyte before host cell rupture, corresponding to a 400% increase in total zinc concentration. Zinc accumulates in a freely available form in parasitophorous compartments outside the food vacuole, including mitochondria. Restriction of zinc availability via small molecule treatment causes a drop in mitochondrial membrane potential and severely inhibits parasite growth. Thus, extraordinary zinc acquisition and trafficking are essential for parasite development.

Marvin, Rebecca G.; Wolford, Janet L.; Kidd, Matthew J.; Murphy, Sean; Ward, Jesse; Que, Emily L.; Mayer, Meghan L.; Penner-Hahn, James E.; Haldar, Kasturi; O; Halloran, Thomas V. (Michigan); (UWASH); (NWU); (Notre)

2012-10-23T23:59:59.000Z

375

Snettisham Hydroelectric Project, Alaska second stage development, Crater lake. Final foundation report. Final report  

Science Conference Proceedings (OSTI)

The important geologic features and methods used to construct the Crater Lake stage of the Snettisham Hydroelectric project, built between 1985 and 1989, are discussed. The project added 31 megawatts of non-polluting, renewable electric power for Juneau, Alaska and the surrounding area. Features of the report include the power tunnel and access adits, penstock excavation, surge shaft, gate shaft and lake top. Construction aspects include the general geology, design features, construction methods, geologic conditions encountered, ground support requirements, grouting, instrumentation and tunnel filling. Foundation conditions for the Crater Lake status were excellent, permitting the power and penstock tunnel and shafts to be constructed essentially unlined. The basic rock type throughout the project is a high-quality, quartz diorite gneiss with randomly spaced, subparallel basalt dikes.... Unlined rock tunnels, Power tunnel, Penstocks, Lake tap, Surge shaft.

Not Available

1992-09-04T23:59:59.000Z

376

The Mansfield Two-Stage, Low BTU Gasification System: Report of Operations  

E-Print Network (OSTI)

The least expensive way to produce gas from coal is by low Btu gasification, a process by which coal is converted to carbon monoxide and hydrogen by reacting it with air and steam. Low Btu gas, which is used near its point of production, eliminates the high costs of oxygen and methanation required to produce gas that can be transmitted over long distance. Standard low Btu fixed bed gasifiers have historically been plagued by three constraints; namely, the production of messy tars and oils, the inability to utilize caking coals, and the inability to accept coal fines. Mansfield Carbon Products, Inc., a subsidiary of A.T. Massey Coal Company, has developed an atmospheric pressure, two-stage process that eliminates these three problems.

Blackwell, L. T.; Crowder, J. T.

1983-01-01T23:59:59.000Z

377

Optimized air staged injection for the oxidation of low calorific value gases  

DOE Green Energy (OSTI)

This paper describes a simplified numerical model used for predicting an optimized air staged plug-flow combustor for low calorific value gas mixtures. The parameter used for optimization, Z, is the summed flow rates of fuel components leaving the combustor. An optimized combustor is one of a given length and input mass flux that minimizes Z. Since a mathematical proof describing the importance of global interactions remains lacking, the model employs both a ``local optimization`` procedure and a ``global optimization`` procedure. By exercising and comparing both procedures, the model shows that ``local optimization`` is sufficient to provide an optimized solution. Sensitivity of Z to deviations in air injection profile and inlet temperature is also examined.

Gemmen, R.S.

1996-12-31T23:59:59.000Z

378

Multi-Stage Supercompaction Of Large Low-Level Waste Components  

E-Print Network (OSTI)

This paper demonstrates that multi-stage compaction (supercompaction) (high-force compaction) has an important role to play in treating metallic LLW. A specialized shear/compactor can produce significant labor and burial cost savings, as well as better operational safety and environmental protection. A case study is the supercompaction facility presently nearing completion at the DOE East Tennessee Technology Park--ETTP--(formerly, the K-25 Gaseous Diffusion Plant) in Oak Ridge. The facility will initially process some 63,000 tons of mainly metallic materials arising from the D&D clean-up project presently being undertaken by BNFL Inc. for the DOE. These materials cannot be economically recycled and prior to burial disposal will be supercompacted with up to 7:1 volume reduction. The paper will confirm progress toward facility handover to production in October 2000. 1. INTRODUCTION Supercompaction is a loosely defined term, and this paper starts by offering a definition, and by re...

Martin Cottam Bsc; Martin Cottam; C Eng

2000-01-01T23:59:59.000Z

379

BigBOSS: The Ground-Based Stage IV BAO Experiment  

DOE Green Energy (OSTI)

The BigBOSS experiment is a proposed DOE-NSF Stage IV ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with an all-sky galaxy redshift survey. The project is designed to unlock the mystery of dark energy using existing ground-based facilities operated by NOAO. A new 4000-fiber R=5000 spectrograph covering a 3-degree diameter field will measure BAO and redshift space distortions in the distribution of galaxies and hydrogen gas spanning redshifts from 0.2< z< 3.5. The Dark Energy Task Force figure of merit (DETF FoM) for this experiment is expected to be equal to that of a JDEM mission for BAO with the lower risk and cost typical of a ground-based experiment.

Schlegel, David; Bebek, Chris; Heetderks, Henry; Ho, Shirley; Lampton, Michael; Levi, Michael; Mostek, Nick; Padmanabhan, Nikhil; Perlmutter, Saul; Roe, Natalie; Sholl, Michael; Smoot, George; White, Martin; Dey, Arjun; Abraham, Tony; Jannuzi, Buell; Joyce, Dick; Liang, Ming; Merrill, Mike; Olsen, Knut; Salim, Samir

2009-04-01T23:59:59.000Z

380

Influence of gas compression on flame acceleration in the early stage of burning in tubes  

E-Print Network (OSTI)

The mechanism of finger flame acceleration at the early stage of burning in tubes has been observed experimentally by Clanet and Searby [Combust. Flame 105: 225 (1996)] for slow propane-air flames, and elucidated analytically and computationally by Bychkov et al. [Combust. Flame 150: 263 (2007)] in the limit of an incompressible flow. We analytically, experimentally and computationally study herein the finger flame acceleration for fast burning flames, when the gas compressibility assumes an important role. Specifically, we have developed a theory through small Mach number expansion up to the first-order terms, demonstrating that gas compression reduces the acceleration rate and thereby moderates the finger flame acceleration noticeably. We have also conducted experiments for hydrogen-oxygen mixtures with considerable initial values of the Mach number, showing finger flame acceleration with the acceleration rate much smaller than those obtained previously for hydrocarbon flames. Furthermore, we have performed...

Valiev, Damir; Kuznetsov, Mikhail; Eriksson, Lars-Erik; Law, Chung K; Bychkov, Vitaly

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Removal of oxides of nitrogen from gases in multi-stage coal combustion  

DOE Patents (OSTI)

Polluting NO{sub x} gas values are removed from off-gas of a multi-stage coal combustion process which includes an initial carbonizing reaction, firing of char from this reaction in a fluidized bed reactor, and burning of gases from the carbonizing and fluidized bed reactions in a topping combustor having a first, fuel-rich zone and a second, fuel-lean zone. The improvement by means of which NO{sub x} gases are removed is directed to introducing NO{sub x}-free oxidizing gas such as compressor air into the second, fuel-lean zone and completing combustion with this source of oxidizing gas. Excess air fed to the fluidized bed reactor is also controlled to obtain desired stoichiometry in the first, fuel-rich zone of the topping combustor. 2 figs.

Mollot, D.J.; Bonk, D.L.; Dowdy, T.E.

1998-01-13T23:59:59.000Z

382

Compact high-flux two-stage solar collectors based on tailored edge-ray concentrators  

SciTech Connect

The recently-invented tailored edge-ray concentrator (TERC) approach permits the design of compact two-stage high-flux solar collectors, with a focusing primary reflector and a non-imaging TERC secondary reflector. We present a new primary reflector shape based on the TERC approach and a secondary TERC tailored to its particular flux map, such that more compact concentrators emerge at flux concentration levels in excess of 90% of the thermodynamic limit. Calculations and raytrace simulation results are also offered which demonstrate that V-cone approximations to a wide variety of TERCs attain the concentration of the TERC to within a few percent. These V-cones represent practical secondary concentrators that may be superior to corresponding compound parabolic concentrator or trumpet secondaries. 13 refs., 5 figs., 2 tabs.

Friedman, R.P. [Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel); Gordon, J.M. [Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel)]|[Ben-Gurion Univ. of the Negev, Beersheva (Israel); Ries, H. [Paul Scherrer Inst., Villigen (Switzerland)

1996-06-01T23:59:59.000Z

383

New high-flux two-stage optical designs for parabolic solar concentrators  

SciTech Connect

We present a new two-stage optical design for parabolic dish concentrators that can realistically attain close to 90% of the thermodynamic limit to concentration with practical, compact designs (e.g., at parabola rim half-angles of around 45[degrees]). For comparison, the parabolic dish-plus-compound parabolic concentrator secondary design, at this rim angle, achieves no more than 50% of the thermodynamic limit. Our new secondary concentrator is tailored to accept edge rays from the parabolic primary, and incurs less than one reflection on average. It necessitates displacing the absorber from the parabola's focal plane, along the concentrator's optic axis, toward the primary reflector, and constructing the secondary between the absorber and the primary. The secondary tailored edge-ray concentrators described here create new possibilities for building compact, extremely high flux solar furnaces and/or commercial parabolic dish systems.

Friedman, R.P.; Gordon, J.M. (Ben-Gurion Univ. of the Negev, Sede Boqer (Israel) Ben-Gurion Univ. of the Negev, Beersheva (Israel)); Ries, H. (Weizmann Institute of Science, Rehovot (Israel))

1993-11-01T23:59:59.000Z

384

The Integrity of ACSR Full Tension Single-Stage Splice Connector at Higher Operation Temperature  

SciTech Connect

Due to increases in power demand and limited investment in new infrastructure, existing overhead power transmission lines often need to operate at temperatures higher than those used for the original design criteria. This has led to the accelerated aging and degradation of splice connectors. It is manifested by the formation of hot-spots that have been revealed by infrared imaging during inspection. The implications of connector aging is two-fold: (1) significant increases in resistivity of the splice connector (i.e., less efficient transmission of electricity) and (2) significant reductions in the connector clamping strength, which could ultimately result in separation of the power transmission line at the joint. Therefore, the splice connector appears to be the weakest link in electric power transmission lines. This report presents a protocol for integrating analytical and experimental approaches to evaluate the integrity of full tension single-stage splice connector assemblies and the associated effective lifetime at high operating temperature.

Wang, Jy-An John [ORNL; Lara-Curzio, Edgar [ORNL; King Jr, Thomas J [ORNL

2008-10-01T23:59:59.000Z

385

Prognosis for Mammographically Occult, Early-Stage Breast Cancer Patients Treated With Breast-Conservation Therapy  

SciTech Connect

Purpose: To compare mammographically occult (MamOcc) and mammographically positive (MamPos) early-stage breast cancer patients treated with breast-conservation therapy (BCT), to analyze differences between the two cohorts. Methods and Materials: Our two cohorts consisted of 214 MamOcc and 2168 MamPos patients treated with BCT. Chart reviews were conducted to assess mammogram reports and method of detection. All clinical-pathologic and outcome parameters were analyzed to detect differences between the two cohorts. Results: Median follow-up was 7 years. There were no differences in final margins, T stage, nodal status, estrogen/progesterone receptor status, or 'triple-negative' status. Significant differences included younger age at diagnosis (p < 0.0001), more positive family history (p = 0.0033), less HER-2+ disease (p = 0.0294), and 1{sup o} histology (p < 0.0001). At 10 years, the differences in overall survival, cause-specific survival, and distant relapse between the two groups did not differ significantly. The MamOcc cohort had more breast relapses (15% vs. 8%; p = 0.0357), but on multivariate analysis this difference was not significant (hazard ratio 1.0, 95% confidence interval 0.993-1.007, p = 0.9296). Breast relapses were mammographically occult in 32% of the MamOcc and 12% of the MamPos cohorts (p = 0.0136). Conclusions: Although our study suggests that there are clinical-pathologic variations for the MamOcc cohort vs. MamPos patients that may ultimately affect management, breast relapse after BCT was not significantly different. Breast recurrences were more often mammographically occult in the MamOcc cohort; consideration should be given to closer follow-up and alternative imaging strategies (ultrasound, breast MRI) for routine posttreatment examination. To our knowledge, this represents the largest series addressing the prognostic significance of MamOcc cancers treated with BCT.

Yang, Tzu-I. J. [Yale University School of Medicine, New Haven, CT (United States); Yang Qifeng [Department of Radiation Oncology, UMDNJ-Robert Wood Johnson School of Medicine, and Cancer Institute of New Jersey, New Brunswick, NJ (United States); Department of Breast Surgery, Qilu Hospital, Shandong University, Jinan (China); Haffty, Bruce G. [Department of Radiation Oncology, UMDNJ-Robert Wood Johnson School of Medicine, and Cancer Institute of New Jersey, New Brunswick, NJ (United States); Moran, Meena S., E-mail: meena.moran@yale.ed [Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT (United States)

2010-01-15T23:59:59.000Z

386

Preoperative Chemotherapy Versus Preoperative Chemoradiotherapy for Stage III (N2) Non-Small-Cell Lung Cancer  

Science Conference Proceedings (OSTI)

Purpose: To compare preoperative chemotherapy (ChT) and preoperative chemoradiotherapy (ChT-RT) in operable Stage III non-small-cell lung cancer. Methods and Materials: This retrospective study analyzed all patients with pathologically confirmed Stage III (N2) non-small-cell lung cancer who initiated preoperative ChT or ChT-RT at Duke University between 1995 and 2006. Mediastinal pathologic complete response (pCR) rates were compared using a chi-square test. The actuarial overall survival, disease-free survival, and local control were estimated using the Kaplan-Meier method and compared using the log-rank test. Multivariate Cox regression analysis was also performed. Results: A total of 101 patients who initiated preoperative therapy with planned resection were identified. The median follow-up was 20 months for all patients and 38 months for survivors. The mediastinal lymph nodes were reassessed after preoperative therapy in 88 patients (87%). Within this group, a mediastinal pCR was achieved in 35% after preoperative ChT vs. 65% after preoperative ChT-RT (p = 0.01). Resection was performed in 69% after ChT and 84% after ChT-RT (p = 0.1). For all patients, the overall survival, disease-free survival, and local control rate at 3 years was 40%, 27%, and 66%, respectively. No statistically significant differences were found in the clinical endpoints between the ChT and ChT-RT subgroups. On multivariate analysis, a mediastinal pCR was associated with improved disease-free survival (p = 0.03) and local control (p = 0.03), but not overall survival (p = 0.86). Conclusion: Preoperative ChT-RT was associated with higher mediastinal pCR rates but not improved survival.

Higgins, Kristin, E-mail: kristin.higgins@duke.ed [Department of Radiation Oncology, Duke University of Medical Center, Durham, NC (United States); Chino, Junzo P. [Department of Radiation Oncology, Duke University of Medical Center, Durham, NC (United States); Marks, Lawrence B. [Department of Radiation Oncology, University of North Carolina, Chapel Hill, NC (United States); Ready, Neal [Department of Medicine, Division of Medical Oncology, Duke University of Medical Center, Durham, NC (United States); D'Amico, Thomas A. [Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Duke University of Medical Center, Durham, NC (United States); Clough, Robert W.; Kelsey, Chris R. [Department of Radiation Oncology, Duke University of Medical Center, Durham, NC (United States)

2009-12-01T23:59:59.000Z

387

Posttreatment TNM staging is a prognostic indicator of survival and recurrence in tethered or fixed rectal carcinoma after preoperative chemotherapy and radiotherapy  

Science Conference Proceedings (OSTI)

Purpose: To evaluate the prognostic value of the posttreatment TNM stage as a predictor of outcome in locally advanced rectal cancers treated with preoperative chemotherapy and radiotherapy. Methods and materials: Between 1993 and 2000, 128 patients with tethered (103) or fixed (25) rectal cancers were treated with 50 Gy preoperative pelvic radiotherapy and two cycles of concurrent 5-fluorouracil infusion (20 mg/kg/d) and leucovorin (200 mg/m{sup 2}/d) chemotherapy on Days 1-4 and 22-25 and a single bolus mitomycin C injection (8 mg/m{sup 2}) on Day 1. Of the 128 patients, 111 had Stage T3 and 17 Stage T4 according to the rectal ultrasound or CT findings and clinical evaluation. All 128 patients underwent surgery 8 weeks after chemoradiotherapy. Postoperatively, the disease stage was determined according to the surgical and pathologic findings using the American Joint Committee on Cancer TNM staging system. Results: Of the 128 patients, 32 had postchemoradiotherapy (pCR) Stage 0 (T0N0M0), 37 pCR Stage I, 26 pCR Stage II, 28 pCR Stage III, and 5 pCR Stage IV disease. Of the 128 patients, 79 had pCR Stage T0-T2, 35 pCR Stage T3, and 14 pCR Stage T4. The rate of T stage downstaging was 66% (84 of 128). Of the 128 patients, 25% achieved a pathologic complete response, and 31 (24%) had positive nodal disease. Lymphovascular or perineural invasion was found in 13 patients (10%). The 5-year disease-specific survival rate was 97% for pCR Stage 0, 88% for pCR Stage I, 74% for pCR Stage II, 44% for pCR Stage III, and 0% for pCR Stage IV (p = 0.0000059). The 5-year relapse-free survival rate was 97% for pCR Stage 0, 80% for pCR Stage I, 72% for pCR Stage II, 42% for pCR Stage III, and 0% for pCR Stage IV (p pCR TNM stage, T stage downstaging, pathologic T4 tumors, node-positive disease after chemoradiotherapy, and lymphovascular or perineural invasion were statistically significant prognosticators of disease-specific survival and relapse-free survival. pCR Stage T4 disease was a strong predictor of local recurrence. The 5-year local control rate was 98% for pCR T0-T2, 89% for pCR T3, and 65% for pCR T4 disease (p = 0.00044). In multivariate analysis, the pCR TNM stage was the most statistically significant independent predictor of survival (p = 0.003) and relapse-free survival (p pCR TNM stage was a strong prognosticator of recurrence and survival. It can be used to identify high-risk patients for additional postoperative therapy.

Chan, Alexander K.P. [Department of Radiation Oncology, Tom Baker Cancer Center, Calgary, Alberta (Canada)]. E-mail: alexc@cancerboard.ab.ca; Wong, Alfred [Department ofMedical Oncology, Tom Baker Cancer Center, Calgary, Alberta (Canada); Jenken, Daryl [Department of Surgery, University of Calgary, Calgary, Alberta (Canada); Heine, John [Department of Surgery, University of Calgary, Calgary, Alberta (Canada); Buie, Donald [Department of Surgery, University of Calgary, Calgary, Alberta (Canada); Johnson, Douglas [Department of Surgery, University of Calgary, Calgary, Alberta (Canada)

2005-03-01T23:59:59.000Z

388

Simulation and Analysis for Applying the Double-Stage Coupled Heat Pump System in the Villa of Cold Area  

E-Print Network (OSTI)

The conventional heating mode is a one-way circulation in cold areas, which causes abatement in the reserves of energy source and increases environmental pollution. An ecological cycle heating system, an air-to-water + apartment water-to-water double-stage coupled heat pump system, is presented in this paper based on analyzing the characteristics of the villa district heating. Prediction and analysis of the feasibility of the double-stage coupled heat pump system in cold areas were carried after the components and characteristics of the system are introduced. The lumped parameter method was used to establish a mathematical model of the whole system, and the system control methods and the volume of the heat storage tank were decided to get the best value of the heating seasonal performance factor (HSPF). Furthermore, the application of the double-stage coupled heat pump system in some representative cities of cold areas in China was analyzed. The results show that the novel heat pump system can be used for heating the villa district in cold areas. To make the HSPF of the system much better, the water circulations of the double-stage coupled heat pump system also were analyzed in this paper; some improvements are put forward, and single-double stages mixed heat pumps system for the villa districts heating are introduced.

Yang, L.; Yao, Y.; Ma, Z.

2006-01-01T23:59:59.000Z

389

Stability analysis of a two-stage tapered gyrotron traveling-wave tube amplifier with distributed losses  

Science Conference Proceedings (OSTI)

The two-stage tapered gyrotron traveling-wave tube (gyro-TWT) amplifier has achieved wide bandwidth in the millimeter wave range. However, possible oscillations in each stage limit this amplifier's operating beam current and thus its output power. To further enhance the amplifier's stability, distributed losses are applied to the interaction circuit of the two-stage tapered gyro-TWT. A self-consistent particle-tracing code is used for analyzing the beam-wave interactions. The stability analysis includes the effects of the wall losses and the length of each stage on the possible oscillations. Simulation results reveal that the distributed-loss method effectively stabilizes all the oscillations in the two stages. Under stable operating conditions, the device is predicted to produce a peak power of 60 kW with an efficiency of 29% and a saturated gain of 52 dB in the Ka-band. The 3-dB bandwidth is 5.7 GHz, which is approximately 16% of the center frequency.

Hung, C. L. [Department of Communication Engineering, National Penghu University of Science and Technology, Penghu 880, Taiwan (China); Lian, Y. H.; Cheng, N. H. [Graduate Institute of Electrical Engineering and Computer Science, National Penghu University of Science and Technology, Penghu 880, Taiwan (China); Yeh, Y. S. [Department of Electro-Optical Engineering, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan (China); Chang, T. H. [Department of Physics, National Tsing Hua University, Hsinchu 300, Taiwan (China)

2012-11-15T23:59:59.000Z

390

Three distinct stages of apoptotic nuclear condensation revealed by time-lapse imaging, biochemical and electron microscopy analysis of cell-free apoptosis  

SciTech Connect

During apoptotic execution, chromatin undergoes a phase change from a heterogeneous, genetically active network to an inert highly condensed form that is fragmented and packaged into apoptotic bodies. We have previously used a cell-free system to examine the roles of caspases or other proteases in apoptotic chromatin condensation and nuclear disassembly. But so far, the role of DNase activity or ATP hydrolysis in this system has not yet been elucidated. Here, in order to better define the stages of nuclear disassembly in apoptosis, we have characterized the apoptotic condensation using a cell-free system and time-lapse imaging. We demonstrated that the population of nuclei undergoing apoptosis in vitro appears to follow a reproducible program of nuclear condensation, suggesting the existence of an ordered biochemical pathway. This enabled us to define three stages of apoptotic chromatin condensation: stage 1 ring condensation; stage 2 necklace condensation; and stage 3 nuclear collapse/disassembly. Electron microscopy revealed that neither chromatin nor detectable subnuclear structures were present inside the stage 1 ring-condensed structures. DNase activity was not essential for stage 1 ring condensation, which could occur in apoptotic extracts depleted of all detectable DNase activity. However, DNase(s) were required for stage 2 necklace condensation. Finally, we demonstrated that hydrolyzable ATP is required for stage 3 nuclear collapse/disassembly. This requirement for ATP hydrolysis further distinguished stage 2 from stage 3. Together, these experiments provide the first steps towards a systematic biochemical characterization of chromatin condensation during apoptosis.

Tone, Shigenobu [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan)], E-mail: tone@med.kawasaki-m.ac.jp; Sugimoto, Kenji [Laboratory of Applied Molecular Biology, Division of Bioscience and Informatics, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531 (Japan); Tanda, Kazue [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Suda, Taiji; Uehira, Kenzo [Electron Microscope Center, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Kanouchi, Hiroaki [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Samejima, Kumiko [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom); Minatogawa, Yohsuke [Department of Biochemistry, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama 701-0192 (Japan); Earnshaw, William C. [Wellcome Trust Centre for Cell Biology, ICMB, King's Buildings, The University of Edinburgh, Edinburgh, EH93JR, Scotland (United Kingdom)], E-mail: Bill.Earnshaw@ed.ac.uk

2007-10-01T23:59:59.000Z

391

The AL-R8 SI: The next generation staging container for plutonium pits at the USDOE Pantex Plant  

SciTech Connect

The AL-R8 SI (sealed insert) is the next generation staging container for plutonium pits at the US DOE Pantex Plant. The sealed insert is a stainless steel container that will be placed inside a modified AL-R8 container to stage pits. A pit is a hollow sphere of plutonium metal which is the primary fissionable material in nuclear weapons (warheads and bombs). It is hermetically sealed by a cladding material, which is usually stainless steel. Personnel exposures to ionizing radiation from the pits in storage are expected to decrease due to the attenuation provided by the new SI. All personnel exposures to ionizing radiation at Pantex Plant are As Low As Reasonably Achievable (ALARA). Pantex Plant secures the common defense and national security of the US by safely staging plutonium pits in a manner that protests the health and safety of employees, the public, and the environment.

Eifert, E.J.; Vickers, L.D. [DOE Pantex Plant, Amarillo, TX (United States)

1999-11-01T23:59:59.000Z

392

Catalytic conversion of light alkanes-proof-of-concept stage -- Phase 6. Final report, February 1--October 31, 1994  

DOE Green Energy (OSTI)

During the course of the first three years of the Cooperative Agreement, the authors uncovered a family of metal perhaloporphyrin complexes which had unprecedented activity for the selective air-oxidation of light alkanes to alcohols. The reactivity of light hydrocarbon substrates with air or oxygen was in the order: isobutane > propane > ethane > methane, in accord with their homolytic bond dissociation energies. Isobutane was so reactive that the proof-of-concept stage of a process for producing tert-butyl alcohol from isobutane was begun (Phase 5). It was proposed that as more active catalytic systems were developed (Phases 4, 6), propane, then ethane and finally methane oxidations will move into this stage (Phases 7 through 9). As of this writing, however, the program has been terminated during the later stages of Phase 5 and 6 so that further work is not anticipated. 72 refs.

NONE

1994-12-31T23:59:59.000Z

393

High concentration two-stage optics for parabolic trough solar collectors with tubular absorber and large rim angle  

SciTech Connect

A new two-stage optical design is proposed for parabolic trough solar collectors with tubular absorbers. It can boost the concentration ratio by a factor of 2.5 relative to the conventional design, while maintaining the large rim angles (i.e., low nominal f-numbers) that are desirable for practical and economical reasons. The second state involves asymmetric nonimaging concentrators of the CPC type, facing segments of the parabolic first stage. The second stage can be accommodated inside an evacuated receiver, allowing the use of first-surface silvered reflectors. The low heat loss of this design opens the possibility of producing steam at temperatures and pressures of conventional power plants, using only one-axis tracking. The improvement in conversion efficiency would be substantial.

Collares-Pereira, M. (Centro para a Conservacao de Energia, Amadora (Portugal)); Gordon, J.M. (Ben Gurion Univ. of the Negev, Beersheva (Israel)); Rabl, A. (Centre d'Energetique, Paris (France)); Winston, R. (Univ. of Chicago, IL (United States))

1991-01-01T23:59:59.000Z

394

Performance investigation on a novel two-stage solar driven rotary desiccant cooling system using composite desiccant materials  

Science Conference Proceedings (OSTI)

In this study, a two-stage solar driven rotary desiccant cooling (TSRDC) system with novel configuration and newly developed silica gel-haloid composite desiccant is proposed aiming to reduce regeneration temperature and to achieve high energy performance. Simulated results show that there also exists an optimal rotation speed for TSRDC system. Compared with one-stage system, it is found that for the similar supply air state, the required regeneration temperature of TSRDC system is lower and for the same regeneration temperature, the cooling capacity of TSRDC is bigger. (author)

Ge, T.S.; Li, Y.; Dai, Y.J.; Wang, R.Z. [Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240 (China)

2010-02-15T23:59:59.000Z

395

Reciprocal space analysis of the initial stages of strain relaxation in SiGe epilayers  

SciTech Connect

Metastable SiGe films were grown by MBE on Si (001) substrates and annealed to promote varying degrees of partial relaxation. X-ray diffraction reciprocal-space analysis was then used to monitor the structural evolution of the displacement fields of the dislocation array with increasing misfit density. The diffuse-x-ray-scattering patterns of the dislocated heterolayers were compared with lineal- misfit densities determined by defect etching, leading to the develop a geometric model which provides a framework for understanding the early-stage evolution of the displacement fields of the dislocation array, and which also explicitly links diffuse x-ray intensity to misfit density. At low misfit density, the diffuse intensity arises from two-dimensional displacement fields associated with single-nonoverlapping dislocations. As misfit density increases, the displacement fields of individual dislocations increasingly overlap producing three-dimensional displacements. The evolving diffuse intensity reflects the transition from 2-D to 3-D displacement fields. Finally, it is demonstrated that the diffuse x-ray intensity of the strained epilayer can be used to accurately measure lineal misfit- dislocation densities from 400 to 20,000 lines/cm.

Lee, S.R.; Floro, J.A.

1996-01-01T23:59:59.000Z

396

Blade tip clearance effect on the performance and flow field of a three stage axial turbine  

E-Print Network (OSTI)

The effect of a 1.5 % blade tip clearance on a rotating three stage turbine under different operating points was investigated using radially and circumferentially traversed five hole pressure probes. The probes were used to obtain flow field total and static pressures, absolute and relative velocities and angles, as well as calculate the blade span distribution of total pressure loss coefficient. Total temperature thermocouple probes were traversed radially and circumferentially to obtain temperature profiles under running conditions. Results showed high discrepancies especially in the blade tip region which is due to high circulation flows occurring at the tip that produce an out of probe calibration range type flow. Engine efficiency and massflow rate was also measured using a venturi flow meter in order to discern the effect the blade tip clearance has on the engine efficiency and performance. Results have shown that the blade tip clearance losses appear to play a smaller role when compared to other losses such as exit losses. This was because the engine efficiency was slightly affected when run using a blade tip clearance.

Abdel-Fattah, Sharef Aly

2003-01-01T23:59:59.000Z

397

Ultrafine coal single stage dewatering and briquetting process. Technical report, December 1, 1994--February 28, 1995  

SciTech Connect

It is well known that a large portion of the pyrite particles in the coal seams of the Illinois Basin, are finely disseminated within the coal matrix. In order to liberate these micron size pyrite particles, one must use a fine grinding operation. The ultrafine coal particles that are produced are difficult to dewater and they create problems in coal transportation as well as in its storage and handling at utility plants. The objective of this research project is to combine ultrafine coal dewatering and briquetting processes into a single stage operation. This will be accomplished by the use of bitumen based emulsions for dewatering and a compaction device for briquetting. During this reporting period, two types of coal samples have been tested for use in the dewatering and briquetting processes. These tests were carried out using Orimulsion as the dewatering reagent. A ram extruder that can be operated continuously is used to fabricate dewatered pellets. The influence of compaction pressure, curing time, binder concentration (2% to 5%), particle size, and compacting time on the performance of coal pellets have been evaluated in terms of their water resistance and wear vulnerability.

Wilson, J.W.

1996-03-01T23:59:59.000Z

398

Ultrafine coal single stage dewatering and briquetting process. Technical report, September 1--November 30, 1994  

SciTech Connect

It is well known that a large portion of the pyrite particles in the coal seams of the Illinois Basin, are finely disseminated within the coal matrix. In order to liberate these micron size pyrite particles, one must use a fine grinding operation. The ultrafine coal particles that are produced are difficult to dewater and they create problems in coal transportation as well as in its storage and handling at utility plants. The objective of this research project is to combine ultrafine coal dewatering and briquetting processes into a single stage operation. This will be accomplished by the use of bitumen based emulsions for dewatering and a compaction device for briquetting. During this reporting period, two types of coal samples have been tested for use in the dewatering and briquetting processes. These tests were carried out in conjunction with a selected hydrophobic binder as the dewatering reagent and an uniaxial hydraulic press. The influence of compaction pressure and binder concentration (2 to 5%) on the performance of coal pellets have been evaluated in terms of their water and wear resistance. A laboratory scale ultrafine coal dewatering and briquetting extruder that can be operated continuously for coal pellets fabrication, has been designed and built, and will be available for testing in the next quarter.

Wilson, J.W. [Univ. of Missouri, Rolla, MO (United States). Dept. of Mining Engineering; Honaker, R.Q. [Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mining Engineering

1994-12-31T23:59:59.000Z

399

Phase separation kinetics in compressible polymer solutions: Computer simulation of the early stages  

E-Print Network (OSTI)

A coarse-grained model for solutions of polymers in supercritical fluids is introduced and applied to the system of hexadecane and carbon dioxide as a representative example. Fitting parameters of the model to the gas-liquid critical point properties of the pure systems, and allowing for a suitably chosen parameter that describes the deviation from the Lorentz-Berthelot mixing rule, we model the liquid-gas and fluid-fluid unmixing transitions of this system over a wide range of temperatures and pressures in reasonable agreement with experiment. Interfaces between the polymer-rich phase and the gas can be studied both at temperatures above and below the end point of the triple line where liquid and vapor carbon dioxide and the polymer rich phase coexist. In the first case interfacial adsorption of fluid carbon dioxide can be demonstrated. Our model can also be used to simulate quenches from the one-phase to the two-phase region. A short animation and a series of snapshots help to visualize the early stages of bubble nucleation and spinodal decomposition. Furthermore we discuss deviations from classical nucleation theory for small nuclei.

P. Virnau; M. Mueller; L. G. MacDowell; K. Binder

2003-04-02T23:59:59.000Z

400

Solvent Carryover Characterization and Recovery for a 10-inch Single Stage Centrifugal Contactor  

Science Conference Proceedings (OSTI)

A test program has been performed to characterize the organic solvent carryover and recovery from centrifugal contactors in the Caustic-side Solvent Extraction (CSSX) process. CSSX is the baseline design for removing cesium from salt solutions for Department of Energy (DOE) Savannah River Site's Salt Waste Processing Facility. CSSX uses a custom solvent to extract cesium from the salt solution in a series of single stage centrifugal contactors. Meeting the Waste Acceptance Criteria at the Defense Waste Processing Facility and Saltstone, as well as plant economics, dictate that solvent loss should be kept to a minimum. Solvent droplet size distribution in the aqueous outlet streams of the CSSX contactors is of particular importance to the design of solvent recovery equipment. Because insufficient solvent droplet size data existed to form a basis for the recovery system design, DOE funded the CSSX Solvent Carryover Characterization and Recovery Test (SCCRT). This paper presents the droplet size distribution of solvent and concentration in the contactor aqueous outlet streams as a function of rotor speed, bottom plate type, and flow rate. It also presents the performance data of a prototype coalescer. (authors)

Lentsch, R.D.; Stephens, A.B.; Leung, D.T. [General Atomics, 3550 General Atomics Court, San Diego, CA 92121 (United States); Baffling, K.E. [Parsons, 1080 Silver Bluff Road, Aiken, SC 29803 (United States); Harmon, H.D. [Battelle, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352 (United States); Suggs, P.C. [U.S. Department of Energy, P.O. Box A, Aiken, SC 29808 (United States)

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Cyclone Boiler Reburn NOx Control Improvements via Cyclone Design Improvements and Advanced Air Staging  

E-Print Network (OSTI)

Eastman Kodak owns three Babcock & Wilcox coal fired cyclone boilers and one Combustion Engineering pulverized coal boiler located at Kodak Park in Rochester, New York. Duke Energy Generation Services (DEGS) operates and maintains the steam and electric generation equipment for Kodak and has primary responsibility for related capital project development and execution. The Kodak plant is capable of generating approximately 1,900,000 pounds of steam and 130 MW’s of electrical power. To achieve the required level of NOx control, Kodak chose The Babcock & Wilcox (B&W) Company's, Natural Gas Reburn technology for the three cyclone boilers. The relatively low capital cost of the system and reasonable cost of natural gas in the mid 1990’s made Natural Gas Reburn an economic fit for the RACT requirements of 0.60#’s/Mmbtu NOx. The run up in natural gas prices since 2002 has increased the cost of NOx removed from ~ $2000/ton to ~$5000/ton based on fuel expense alone. In an effort to curtail the cost of control, Duke Energy Generations Services and Kodak implemented a series of projects that integrated Cyclone Design Improvements and Advancements in Air Staging along with ESP inlet flue modifications that resulted in decreasing the Natural Gas required for NOx control ~ 40% from baseline levels saving the plant several million dollars per year in fuel expense. Significant improvements in opacity and filterable PM were also realized by these changes.

Morabito, B.; Nee, B.; Goff, V.; Maringo, G.

2008-01-01T23:59:59.000Z

402

Enhanced Hydrogen Production Integrated with CO2 Separation in a Single-Stage Reactor  

DOE Green Energy (OSTI)

Hydrogen production from coal gasification can be enhanced by driving the equilibrium limited Water Gas Shift reaction forward by incessantly removing the CO{sub 2} by-product via the carbonation of calcium oxide. This project aims at using the OSU patented high-reactivity mesoporous precipitated calcium carbonate sorbent for removing the CO{sub 2} product. Preliminary experiments demonstrate the show the superior performance of the PCC sorbent over other naturally occurring calcium sorbents. Gas composition analyses show the formation of 100% pure hydrogen. Novel calcination techniques could lead to smaller reactor footprint and single-stage reactors that can achieve maximum theoretical H{sub 2} production for multicyclic applications. Sub-atmospheric calcination studies reveal the effect of vacuum level, diluent gas flow rate, thermal properties of the diluent gas and the sorbent loading on the calcination kinetics which play an important role on the sorbent morphology. Steam, which can be easily separated from CO{sub 2}, is envisioned to be a potential diluent gas due to its enhanced thermal properties. Steam calcination studies at 700-850 C reveal improved sorbent morphology over regular nitrogen calcination. A mixture of 80% steam and 20% CO{sub 2} at ambient pressure was used to calcine the spent sorbent at 820 C thus lowering the calcination temperature. Regeneration of calcium sulfide to calcium carbonate was achieved by carbonating the calcium sulfide slurry by bubbling CO{sub 2} gas at room temperature.

Mahesh Iyer; Himanshu Gupta; Danny Wong; Liang-Shih Fan

2005-09-30T23:59:59.000Z

403

ENHANCED HYDROGEN PRODUCTION INTEGRATED WITH CO2 SEPARATION IN A SINGLE-STAGE REACTOR  

DOE Green Energy (OSTI)

Hydrogen production cannot be maximized from fossil fuels (gas/coal) via the WGS reaction at high temperatures as the WGS-equilibrium constant K{sub WGS} (= [CO{sub 2}][H{sub 2}]/[CO][H{sub 2}O]), falls with increasing temperatures. However, CO{sub 2} removal down to ppm levels by the carbonation of CaO to CaCO{sub 3} in the temperature range 650-850 C, leads to the possibility of stoichiometric H{sub 2} production at high temperature/pressure conditions and at low steam to fuel ratios. Further, CO{sub 2} is also captured in the H{sub 2} generation process, making this coal to hydrogen process compatible with CO{sub 2} sequestration goals. While microporous CaO sorbents attain <50% conversion over cyclical carbonation-calcination, the OSU-patented, mesoporous CaO sorbents are able to achieve >95% conversion. Novel calcination techniques could lead to an ever-smaller footprint, single-stage reactors that achieve maximum theoretical H{sub 2} production at high temperatures and pressures for on/off site usage. Experimental results indicate that the PCC-CaO sorbent is able to achieve complete conversion of CO for 240 seconds as compared to only a few seconds with CaO derived from natural sources.

Himanshu Gupta; Mahesh Iyer; Bartev Sakadjian; Liang-Shih Fan

2005-03-10T23:59:59.000Z

404

Heat transfer simulation and thermal measurements of microfabricated x-ray transparent heater stages  

SciTech Connect

A microfabricated amorphous silicon nitride membrane-based nanocalorimeter is proposed to be suitable for an x-ray transparent sample platform with low power heating and built-in temperature sensing. In this work, thermal characterization in both air and vacuum are analyzed experimentally and via simulation. Infrared microscopy and thermoreflectance microscopy are used for thermal imaging of the sample area in air. While a reasonably large isothermal area is found on the sample area, the temperature homogeneity of the entire sample area is low, limiting use of the device as a heater stage in air or other gases. A simulation model that includes conduction, as well as radiation and convection heat loss, is presented with radiation and convection parameters determined experimentally. Simulated temperature distributions show that the homogeneity can be improved by using a thicker thermal conduction layer or reducing the pressure of the gas in the environment but neither are good solutions for the proposed use. A new simple design that has improved temperature homogeneity and a larger isothermal area while maintaining a thin thermal conduction layer is proposed and fabricated. This new design enables applications in transmission x-ray microscopes and spectroscopy setups at atmospheric pressure.

Baldasseroni, C. [Department of Materials Science and Engineering, University of California Berkeley, Berkeley, California 94720 (United States); Queen, D. R.; Cooke, David W.; Hellman, F. [Department of Physics, University of California Berkeley, Berkeley, California 94720 (United States); Maize, K.; Shakouri, A. [Department of Electrical Engineering, University of California Santa Cruz, Santa Cruz, California 95064 (United States)

2011-09-15T23:59:59.000Z

405

CO{sub 2} EOR starts in late stage of waterflood  

SciTech Connect

The Postle field carbon dioxide flood marks the first time anyone in the industry has attempted a major CO{sub 2} enhanced oil recovery EOR project at such a late stage in a waterflooded field. Prior to CO{sub 2} injection Postle produced oil with a 98% water cut. Mobil began injecting CO{sub 2} into the Postle on Nov. 15, 1995. The Postle field, discovered in 1958 in the Oklahoma Panhandle near Guymon, had produced about 92 million bbl of oil under primary and waterflood production. Waterflooding started in 1967. Oil production peaked at about 22,000 bo/d in 1970 and averaged about 2,000 bo/d when CO{sub 2} injection began at a rate of 35 MMscfd. The paper describes Mobil`s plans for the CO{sub 2} injection, the CO{sub 2} process, project installations, and Mobil`s experience with CO{sub 2} injection in other fields.

NONE

1996-07-08T23:59:59.000Z

406

CX-008789: Categorical Exclusion Determination | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

89: Categorical Exclusion Determination 89: Categorical Exclusion Determination CX-008789: Categorical Exclusion Determination Routine Maintenance of Curecanti-Lost Canyon 230 Kilovolt Access Roads and Western Area Power Administration Right-of-Way in Montrose, Ouray, San Miguel, Dolores, and Montezuma Counties, Colorado CX(s) Applied: B1.3 Date: 05/22/2012 Location(s): Colorado Offices(s): Western Area Power Administration-Rocky Mountain Region Western Area Power Administration (Western) proposes to perform routine maintenance of existing access roads and right-of-way (ROW) along the Curecanti-Lost Canyon (CCI-LCN) 230-kilovolt (kV) transmission line at structures 0/2 to 1/3, 3/2, 8/1, 8/6, 9/6 to 9/7, 12/2 to 14/2, 15/5, 17/2, 17/3, 36/5, 37/1, 43/2, 47/2, 47/4, and 56/4 (approximately 60 miles).

407

Simulation Studies on a Multi-stage Distillation with Slope-Plate Falling Film Evaporation Desalination System Using Solar Energy  

Science Conference Proceedings (OSTI)

An innovative, multi-stage solar distillation with slope-plate falling film system for seawater desalination is investigated. The system consists of a solar heater (flat plate solar collector) and one evaporation-condensation set that is composed of ... Keywords: solar energy, falling film, desalination

Penghui Gao; Guoqing Zhou; Henglin Lv

2009-10-01T23:59:59.000Z

408

Direct 4D-Var Assimilation of NCEP Stage IV Radar and Gauge Precipitation Data at ECMWF  

Science Conference Proceedings (OSTI)

Direct four-dimensional variational data assimilation (4D-Var) of NCEP stage IV radar and gauge precipitation observations over the eastern United States has been developed and tested in ECMWF’s global Integrated Forecasting System. This is the ...

Philippe Lopez

2011-07-01T23:59:59.000Z

409

Stereotactic Body Radiotherapy (SBRT) for Operable Stage I Non-Small-Cell Lung Cancer: Can SBRT Be Comparable to Surgery?  

SciTech Connect

Purpose: To review treatment outcomes for stereotactic body radiotherapy (SBRT) in medically operable patients with Stage I non-small-cell lung cancer (NSCLC), using a Japanese multi-institutional database. Patients and Methods: Between 1995 and 2004, a total of 87 patients with Stage I NSCLC (median age, 74 years; T1N0M0, n = 65; T2N0M0, n = 22) who were medically operable but refused surgery were treated using SBRT alone in 14 institutions. Stereotactic three-dimensional treatment was performed using noncoplanar dynamic arcs or multiple static ports. Total dose was 45-72.5 Gy at the isocenter, administered in 3-10 fractions. Median calculated biological effective dose was 116 Gy (range, 100-141 Gy). Data were collected and analyzed retrospectively. Results: During follow-up (median, 55 months), cumulative local control rates for T1 and T2 tumors at 5 years after SBRT were 92% and 73%, respectively. Pulmonary complications above Grade 2 arose in 1 patient (1.1%). Five-year overall survival rates for Stage IA and IB subgroups were 72% and 62%, respectively. One patient who developed local recurrences safely underwent salvage surgery. Conclusion: Stereotactic body radiotherapy is safe and promising as a radical treatment for operable Stage I NSCLC. The survival rate for SBRT is potentially comparable to that for surgery.

Onishi, Hiroshi, E-mail: honishi@yamanashi.ac.jp [School of Medicine, Yamanashi University, Yamanashi (Japan); Shirato, Hiroki [School of Medicine, Hokkaido University, Sapporo (Japan); Nagata, Yasushi [School of Medicine, Hiroshima University, Hiroshima (Japan); Hiraoka, Masahiro [School of Medicine, Kyoto University, Kyoto (Japan); Fujino, Masaharu [School of Medicine, Hokkaido University, Sapporo (Japan); School of Medicine, Yamanashi University, Yamanashi (Japan); Gomi, Kotaro [Cancer Institute Suwa Red-Cross Hospital, Suwa (Japan); Karasawa, Katsuyuki [Tokyo Metropolitan Komagome Hospital, Tokyo (Japan); Hayakawa, Kazushige; Niibe, Yuzuru [Kitasato University, Kanagawa (Japan); Takai, Yoshihiro [School of Medicine, Hirosaki University, Hirosaki (Japan); Kimura, Tomoki [School of Medicine, Kagawa University, Hiroshima (Japan); Takeda, Atsuya [Ofuna Chuo Hospital, Kanagawa (Japan); Ouchi, Atsushi [Keijinkai Hospital, Sapporo (Japan); Hareyama, Masato [Sapporo Medical University, Sapporo (Japan); Kokubo, Masaki [Institute of Biomedical Research and Innovation, Kobe (Japan); Kozuka, Takuyo [School of Cancer Institute Ariake Hospital, Tokyo (Japan); Arimoto, Takuro [Kitami Red Cross Hospital, Kitami (Japan); Hara, Ryusuke [National Institute of Radiological Science, Chiba (Japan); Itami, Jun [National Cancer Center, Tokyo (Japan); Araki, Tsutomu [School of Medicine, Yamanashi University, Yamanashi (Japan)

2011-12-01T23:59:59.000Z

410

A two-stage intelligent optimization system for the raw slurry preparing process of alumina sintering production  

Science Conference Proceedings (OSTI)

The raw slurry preparing is a key process to guarantee product for alumina sintering production. To obtain the qualified raw slurry in the presence of uncertainty, a two-stage intelligent optimization system, which weakens uncertainty effects through ... Keywords: Alumina sintering production, Expert reasoning, Integrated modeling, Intelligent optimization, Raw slurry preparing, Uncertainty

Chunhua Yang; Weihua Gui; Lingshuang Kong; Yalin Wang

2009-06-01T23:59:59.000Z

411

Understanding the regeneration stage undergone by surface cyclones crossing a mid-latitude jet in a two-layer model  

Science Conference Proceedings (OSTI)

The present paper provides a rationale for the regeneration stage undergone by surface cyclones when they cross a baroclinic jet from its anticyclonic-shear (warm) side to its cyclonic-shear (cold) side in a two-layer quasi-geostrophic model. To ...

Gwendal Rivière; Jean-Baptiste Gilet; Ludivine Oruba

412

Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability  

Science Conference Proceedings (OSTI)

Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

Li, Huijuan [ORNL; Xu, Yan [ORNL; Adhikari, Sarina [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Irminger, Philip [ORNL

2012-01-01T23:59:59.000Z

413

Evolution and Dynamics of a Late-Stage Squall Line That Occurred on 20 February 1993 during TOGA COARE  

Science Conference Proceedings (OSTI)

Airborne Doppler and flight-level data are used to document the structure and evolution of portions of a late-stage horseshoe-shaped squall line system and its effect on vertical momentum and mass transports. This system, which occurred on 20 ...

Sharon A. Lewis; Margaret A. LeMone; David P. Jorgensen

1998-12-01T23:59:59.000Z

414

Effects of Flaming Gorge Dam hydropower operations on flow and stage in the Green River, Utah and Colorado  

DOE Green Energy (OSTI)

This report presents the development of Flaming Gorge Reservoir release patterns and resulting downstream flows and stages for four potential hydropower operational scenarios. The release patterns were developed for three representative hydrologic years: moderate, dry, and wet. Computer models were used to estimate flows and stages in the Green River resulting from these release patterns for the moderate water year. The four hydropower operational scenarios for Flaming Gorge Dam were year-round high fluctuating flows, seasonally adjusted high fluctuating flows, seasonally adjusted moderate fluctuating flows, and seasonally adjusted steady flows. The year-round high fluctuating flow scenario assumes that the monthly total reservoir releases would be the same as historical releases. The remaining seasonally adjusted flow scenarios would comply with the 1992 Biological Opinion of the US Fish and Wildlife Service, which requires high flows in the spring and limited hourly fluctuations, especially in summer and autumn releases, to protect endangered fish. Within one year, the maximum daily river stage fluctuations resulting from hydropower operations under the seasonally adjusted high fluctuating flow scenario would be similar to the maximum daily fluctuations under the year-round high fluctuating flow scenario. However, reduced or no fluctuations would occur in some time periods under the former scenario. The maximum daily river stage fluctuations under the seasonally adjusted moderate fluctuating flow scenario would be about half of those under the seasonally adjusted high fluctuating flow scenario.

Yin, S.C.L.; Cho, H.E. [Argonne National Lab., IL (United States). Environmental Assessment Div.; McCoy, J.J.; Palmer, S.C. [Western Area Power Administration, Salt Lake City, UT (United States)

1995-05-01T23:59:59.000Z

415

Spent Nuclear Fuel project stage and store K basin SNF in canister storage building functions and requirements. Revision 1  

SciTech Connect

This document establishes the functions and requirements baseline for the implementation of the Canister Storage Building Subproject. The mission allocated to the Canister Storage Building Subproject is to provide safe, environmentally sound staging and storage of K Basin SNF until a decision on the final disposition is reached and implemented

Womack, J.C.

1995-10-24T23:59:59.000Z

416

An Upwind-Biased Conservative Transport Scheme for Multi-stage Temporal Integrations on Spherical Icosahedral Grids  

Science Conference Proceedings (OSTI)

A standard nominally third-order upwind-biased spatial discretization of the flux-divergence operator was extended to a spherical icosahedral grid. The method can be used with multi-stage time-stepping schemes such as the Runge-Kutta method to ...

Hiroaki Miura

417

Aerosol-to-Hydrosol Transfer Stages for use in bioaerosol sampling  

E-Print Network (OSTI)

Single-Jet and Multi-Jet Aerosol to Hydrosol Transfer Stages (AHTS) with cutpoints of 2 and 0.8 []m AD, respectively, were designed and evaluated. Both devices operate at nominal air sampling flow rate of 1 L/min, 0.1% Tween®20, and 0.3 mL/min. collection liquid flow rate. Both systems have an ideal air power consumption of 1.4 mW and 4.5 mW, respectively. The total electrical power consumption, including that needed to heat the airstream and a sampling enclosure, is approximately 55 W at -23°C (-10°F) outside air temperature. The AHTSs were tested using polystyrene solid and oleic acid liquid aerosol particles to determine the collection efficiencies. The effectiveness of the fractional collection efficiency for the Single-Jet and Multi-Jet are 91% over the size range of 2 to 10 []m AD, and 90% over the size range of 1 to 10 []m AD, respectively. The hydrosol collection efficiency of the Multi-Jet is 95% over the size of 1 to 3 []m AD. The influence of a cleaning solution that was comprised of distilled water and 0.1% Tween®20 yielded an average collection efficiency of above 90% for the Single-Jet and 98% for the Multi-Jet. When the liquid flow rate is equal to or greater than 0.3 mL/min, the hydrosol collection efficiency is constant at 90%. The time responses for Single-Jet and Multi-Jet are 1.4 and 0.75 minutes, respectively. Preliminary results of bioaerosol testing with 0.7 []m AD single spores of Bacillus globigii var. niger show efficiencies over 100%. These discrepancies are probably due to the testing procedures at the U.S. Army Research Office, Chemical Biological Center, Edgewood, MD, facilities.

Phan, Huy Ngoc

2002-01-01T23:59:59.000Z

418

Renal Artery Embolization - A First Line Treatment Option For End-Stage Hydronephrosis  

Science Conference Proceedings (OSTI)

Conventionally poorly functioning hydronephrotic kidneys have been removed if they are symptomatic. In our unit, patients are offered renal artery embolization as an alternative treatment option. Patients and Methods: Fifteen patients (11 male, 4 female) with a mean age of 32.9 yr (20-51 yrs) have undergone renal artery embolization for symptomatic hydronephrosis with poor function. Mean follow-up was 64.13 weeks (range 14-200). All patients had loin pain and hydronephrosis. Twelve patients had primary pelvi-ureteric junction obstruction (PUJO). Two patients had poorly functioning hydronephrotic kidneys secondary to chronic calculous obstruction. One patient had chronic pain in an obstructed but reasonably functioning kidney following a previous pyeloplasty for PUJO which demanded intervention. Mean split function on renography was 11% (range 0-46%). Selective renal artery embolization was carried out under antibiotic cover using a 7 Fr balloon occlusion catheter and absolute alcohol, steel coils, and polyvinyl alcohol particles.Results: Nine patients developed post-embolization syndrome of self-limiting pain and pyrexia with no evidence of sepsis. One patient required readmission with this condition. One patient developed a hematoma at the puncture site. Mean hospital stay was 2.3 days. Fourteen patients are happy with the result and are completely pain free. One patient has minor discomfort but is delighted with the result. Nine patients have had follow-up ultrasound confirming resolution of the hydronephrosis. Conclusion: Renal artery embolization is an effective, safe, well-tolerated minimally invasive treatment option in end-stage hydronephrosis and we routinely offer it as an alternative to nephrectomy.

Mitra, Kakali; Prabhudesai, Vikramaditya [Newcastle under Lyme ST4 6QG, University Hospital of North Staffordshire NHS Trust (United Kingdom); James, R. Lester [Stafford ST16 S5A, Staffordshire General Hospital (United Kingdom); Jones, Robert W. A.; French, Michael E.; Cowling, Mark; West, David J. [Newcastle under Lyme ST4 6QG, University Hospital of North Staffordshire NHS Trust (United Kingdom)

2004-09-15T23:59:59.000Z

419

Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage  

E-Print Network (OSTI)

We present a coupled Boltzmann and hydrodynamics approach to relativistic heavy ion reactions. This hybrid approach is based on the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport approach with an intermediate hydrodynamical evolution for the hot and dense stage of the collision. Event-by-event fluctuations are directly taken into account via the non-equilibrium initial conditions generated by the initial collisions and string fragmentations in the microscopic UrQMD model. After a (3+1)-dimensional ideal hydrodynamic evolution, the hydrodynamical fields are mapped to hadrons via the Cooper-Frye equation and the subsequent hadronic cascade calculation within UrQMD proceeds to incorporate the important final state effects for a realistic freeze-out. This implementation allows to compare pure microscopic transport calculations with hydrodynamic calculations using exactly the same initial conditions and freeze-out procedure. The effects of the change in the underlying dynamics - ideal fluid dynamics vs. non-equilibrium transport theory - will be explored. The freeze-out and initial state parameter dependences are investigated for different observables. Furthermore, the time evolution of the baryon density and particle yields are discussed. We find that the final pion and proton multiplicities are lower in the hybrid model calculation due to the isentropic hydrodynamic expansion while the yields for strange particles are enhanced due to the local equilibrium in the hydrodynamic evolution. The results of the different calculations for the mean transverse mass excitation function, rapidity and transverse mass spectra for different particle species at three different beam energies are discussed in the context of the available data.

Hannah Petersen; Jan Steinheimer; Gerhard Burau; Marcus Bleicher; Horst Stöcker

2008-06-10T23:59:59.000Z

420

Catalysts and process developments for two-stage liquefaction. Final technical report, October 1, 1989--September 30, 1992  

SciTech Connect

Research in this project centered upon developing and evaluating catalysts and process improvements for coal liquefaction in the two-stage, close-coupled catalytic process. The major results are summarized here and they are described in more detail under each Task. In tasks for coal pretreatment and beneficiation, it was shown for coal handling that drying of both lignite or subbituminous coals using warm air, vacuum oven or exposing to air for long time was detrimental to subsequent liquefaction. Both laboratory and bench-scale beneficiations indicated that in order to achieve increased liquefaction yield for Illinois No. 6 bituminous coal, size separation with in sink-float technique should be used. For subbituminous coal, the best beneficiation was aqueous SO{sub 2} treatment, which reduced mineral matter. In the case of lignite, the fines should be rejected prior to aqueous SO{sub 2} treatment and sink-float gravity separation. In liquefying coals with supported catalysts in both first and second stages, coal conversion was highest (93%) with Illinois No. 6 coal, which also had the highest total liquid yield of 80%, however, the product contained unacceptably high level of resid (30%). Both low rank coals gave lower conversion (85--87%) and liquid yields (57--59%), but lighter products (no resid). The analysis of spent first stage catalysts indicated significant sodium and calcium deposits causing severe deactivation. The second stage catalysts were in better condition showing high surface areas and low coke and metal deposits. The use of dispersed catalyst in the first stage would combat the severe deactivation.

Cronauer, D.C.; Swanson, A.J.; Sajkowski, D.J.

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Prognostic Impact of the 6th and 7th American Joint Committee on Cancer TNM Staging Systems on Esophageal Cancer Patients Treated With Chemoradiotherapy  

SciTech Connect

Purpose: The new 7th edition of the American Joint Committee on Cancer TNM staging system is based on pathologic data from esophageal cancers treated by surgery alone. There is no information available on evaluation of the new staging system with regard to prognosis of patients treated with chemoradiotherapy (CRT). The objective of this study was to evaluate the prognostic impact of the new staging system on esophageal cancer patients treated with CRT. Methods and Materials: A retrospective review was performed on 301 consecutive esophageal squamous cell carcinoma patients treated with CRT. Comparisons were made of the prognostic impacts of the 6th and 7th staging systems and the prognostic impacts of stage and prognostic groups, which were newly defined in the 7th edition. Results: There were significant differences between Stages I and III (p < 0.01) according to both editions. However, the 7th edition poorly distinguishes the prognoses of Stages III and IV (p = 0.36 by multivariate analysis) in comparison to the 6th edition (p = 0.08 by multivariate analysis), although these differences were not significant. For all patients, T, M, and gender were independent prognostic factors by multivariate analysis (p < 0.05). For the Stage I and II prognostic groups, survival curves showed a stepwise decrease with increase in stage, except for Stage IIA. However, there were no significant differences seen between each prognostic stage. Conclusions: Our study indicates there are several problems with the 7th TNM staging system regarding prognostic factors in patients undergoing CRT.

Nomura, Motoo, E-mail: excell@hkg.odn.ne.jp [Department of Clinical Oncology, Aichi Cancer Center Hospital (Japan); Department of Radiation Oncology, Aichi Cancer Center Hospital (Japan); Shitara, Kohei [Department of Clinical Oncology, Aichi Cancer Center Hospital (Japan); Kodaira, Takeshi [Department of Radiation Oncology, Aichi Cancer Center Hospital (Japan); Hatooka, Shunzo [Department of Thoracic Surgery, Aichi Cancer Center Hospital (Japan); Mizota, Ayako; Kondoh, Chihiro; Yokota, Tomoya; Takahari, Daisuke; Ura, Takashi; Muro, Kei [Department of Clinical Oncology, Aichi Cancer Center Hospital (Japan)

2012-02-01T23:59:59.000Z

422

Performance analysis of a two-stage variable capacity air source heat pump and a horizontal loop coupled ground source heat pump system.  

E-Print Network (OSTI)

??The thermal performance of a new two-stage variable capacity air source heat pump (ASHP) and a horizontal ground loop ground source heat pump (GSHP) was… (more)

Safa, Amir Alizadeh

2012-01-01T23:59:59.000Z

423

Dynamic modeling of a single-stage downward firing, entrained flow gasifier  

SciTech Connect

The gasifier is the heart of the integrated gasification combined cycle (IGCC), a technology that has emerged as an attractive alternative to conventional coal-fired power plant technology due to its higher efficiency and cleaner environmental performance especially with the option of CO{sub 2} capture and sequestration. Understanding the optimal performance of the gasifier is therefore paramount for the efficient operation of IGCC power plants. Numerous gasifier models of varying complexity have been developed to study the various aspects of gasifier performance. These range from simple one-dimensional (1D) process-type models to rigorous higher order 2-3D models based on computational fluid dynamics (CFD). Whereas high-fidelity CFD models can accurately predict most key aspects of gasifier performance, they are computationally expensive and typically take hours to days to execute on high-performance computers. Therefore, faster 1D partial differential equation (PDE)-based models are required for use in dynamic simulation studies, control system analysis, and training applications. A number of 1D gasifier models can be found in the literature, but most are steady-state models that have limited application in the practical operation of the gasifier. As a result, 1D PDE-based dynamic models are needed to further study and predict gasifier performance under a wide variety of process conditions and disturbances. In the current study, a 1D transient model of a single-stage downward-fired GE/Texaco-type entrained-flow gasifier has been developed. The model comprises mass, momentum and energy balances for the gas and solid phases. The model considers the initial gasification processes of water evaporation and coal devolatilization. In addition, the key heterogeneous and homogeneous chemical reactions have been modeled. The resulting time-dependent PDE model is solved using the well-known method of lines approach in Aspen Custom Modeler®, whereby the PDEs in the spatial domain are discretized and the resulting differential algebraic equations (DAEs) are then integrated over time using a dynamic integrator. The dynamic response results of the gasifier performance parameters to certain disturbances commonly encountered during practical operation are presented. These disturbances include ramp and step changes to input variables such as coal flow rate, oxygen-to-coal ratio and water-to-coal ratio among others. Comparison of model predictions to available dynamic data will also be discussed.

Kasule, J., Turton, R., Bhattacharyya, D., Zitney, S.

2012-01-01T23:59:59.000Z

424

Study of Ion Cooling and Ejection from Two Stage Linear Quadrupole Ion Trap consisted of RFQ ion guides  

NLE Websites -- All DOE Office Websites (Extended Search)

Ion Cooling and Ejection from Two Stage Linear Quadrupole Ion Trap consisted of RFQ ion guides Ion Cooling and Ejection from Two Stage Linear Quadrupole Ion Trap consisted of RFQ ion guides Kozlovskiy V.I., Filatov V. V., Shchepunov (UNIRIB, O.R.A.U. Oak Ridge, TN, USA) V. A., Brusov V. S., Pikhtelev A. R., Zelenov V. V. Introduction The primary objective of this work concerns linear quadrupole ion traps, which are commonly used to interface a continuous ion beam from an external source with a mass analyzer, requiring bunched or pulsed beams. We assume that the ions prepared for mass analysis, are well spatially shaped, and normalized by ion kinetic energy. (Slava, I don't understand the meaning of the previous sentence - I wrote it as I interpreted what you are saying - I may be all wrong) In our work, such a device was developed and built to interface a source of continuous ion beams and a

425

Tunable, high-power, subpicosecond blue-green dye laser system with a two-stage dye amplifier  

Science Conference Proceedings (OSTI)

This paper reports on a two-stage dye amplifier design that has been developed to amplify tunable, blue=green, subpicosecond dye laser pulses which are generated from a hybrid synchronously mode-locked dye oscillator directly (800 fs) or shorter to 200 fs by a fiber compressor stage. This system has achieved single pulse energies of 2mJ, with an amplified spontaneous emission content of less than 0.1%. Using 40 mJ of the third-harmonic output of an Nd:YAG regenerative amplifier to pump the dye amplifier system, these pulse energies represent an energy extraction efficiency of {approximately}5%. The tunability, stability, and spatial and temporal quality of throughput pulses from the system have also been characterized.

Sharp, T.F.; Dane, C.B.; Barber, D.; Tittel, F.K.; Wisoff, P.J. (Dept. of Electrical and Computer Engineering, Rice Univ., Houston, TX (US))

1992-05-01T23:59:59.000Z

426

Area G perimeter surface-soil and single-stage water sampling: Environmental surveillance for fiscal year 95. Progress report  

SciTech Connect

ESH-19 personnel collected soil and single-stage water samples around the perimeter of Area G at Los Alamos National Laboratory (LANL) during FY 95 to characterize possible radionuclide movement out of Area G through surface water and entrained sediment runoff. Soil samples were analyzed for tritium, total uranium, isotopic plutonium, americium-241, and cesium-137. The single-stage water samples were analyzed for tritium and plutonium isotopes. All radiochemical data was compared with analogous samples collected during FY 93 and 94 and reported in LA-12986 and LA-13165-PR. Six surface soils were also submitted for metal analyses. These data were included with similar data generated for soil samples collected during FY 94 and compared with metals in background samples collected at the Area G expansion area.

Childs, M.; Conrad, R.

1997-09-01T23:59:59.000Z

427

Intra-Arterial Infusion Chemotherapy Using Cisplatin With Radiotherapy for Stage III Squamous Cell Carcinoma of the Cervix  

Science Conference Proceedings (OSTI)

Purpose: To examine the effectiveness of concomitant intra-arterial infusion chemotherapy (IAIC) using cisplatin (CDDP) with radiotherapy for Stage III squamous cell carcinoma of the cervix. Materials and Methods: We analyzed 29 cases of Stage III squamous cell carcinoma of the uterine cervix treated with radiotherapy and IAIC of CDDP from 1991 to 2006. External-beam therapy was given to the whole pelvis using four opposing parallel fields with an 18-MV linear accelerator unit. A central shield was used after 30-40 Gy with external whole-pelvic irradiation, and the total dose was 50 Gy. High-dose-rate brachytherapy was given with {sup 192}Ir microSelectron. The dose at Point A was 6 Gy per fraction, 2 fractions per week, and the total number of fractions was either 3 or 4. Two or three courses of IAIC were given concomitantly with CDDP 120 mg or carboplatin 300 mg. Results: We confirmed excellent medicine distribution directly by using computed tomographic angiography. The 5-year overall survival rate for Stage III patients was 62%, the cause-specific survival rate was 70%, and the local relapse-free survival rate was 89%. Local recurrence, distant metastasis, and occurrences of both were 7%, 38%, and 3%, respectively. The incidence of severe acute hematologic adverse reactions (Grade {>=}3) was 27% for all patients; however, all recovered without interruption of radiotherapy. Severe nonhematologic effects (Grade {>=}3) were 3%, including nausea and ileus. Only 1 patient's radiotherapy was interrupted for a period of 1 week because of ileus. Severe late complication rates (Grade {>=}3) for the bladder, rectum, and intestine were 3%, 3%, and 10%, respectively. Conclusion: A combination of IAIC and systemic chemotherapy should be considered to improve the prognosis of patients with Stage III squamous cell carcinoma of the cervix.

Kaneyasu, Yuko [Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima (Japan)], E-mail: kaneyasu@hiroshima-u.ac.jp; Nagai, Nobutaka [Department of Obstetrics and Gynecology, Asa Citizen Hospital, Hiroshima (Japan); Nagata, Yasushi; Hashimoto, Yasutoshi; Yuki, Shintaro; Murakami, Yuji; Kenjo, Masahiro [Department of Radiation Oncology, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima (Japan); Kakizawa, Hideaki; Toyota, Naoyuki [Graduate School of Biomedical Sciences, Department of Radiology, Graduate School of Biomedical Science, Hiroshima University, Hiroshima (Japan); Fujiwara, Hisaya; Kudo, Yoshiki [Department of Obstetrics and Gynecology, Hiroshima University, Hiroshima (Japan); Ito, Katsuhide [Graduate School of Biomedical Sciences, Department of Radiology, Graduate School of Biomedical Science, Hiroshima University, Hiroshima (Japan)

2009-10-01T23:59:59.000Z

428

Field Evaluation of Wedgewire Screens for Protecting Early Life Stages of Fish at Cooling Water Intake Structures  

Science Conference Proceedings (OSTI)

Wedgewire screens are designed to minimize entrainment and impingement of aquatic organisms at power plant cooling water intake structures (CWIS). This report presents the results of a field study evaluating the effectiveness of cylindrical wedgewire screens for protecting the early life stages (eggs and larvae) of fish at cooling water intakes. The study examines multiple screen design parameters and hydraulic conditions in the Chesapeake Bay with a variety of estuarine species. Information in this repo...

2006-06-12T23:59:59.000Z

429

Identifying patients in target customer segments using a two-stage clustering-classification approach: A hospital-based assessment  

Science Conference Proceedings (OSTI)

Identifying patients in a Target Customer Segment (TCS) is important to determine the demand for, and to appropriately allocate resources for, health care services. The purpose of this study is to propose a two-stage clustering-classification model through ... Keywords: Customer relationship management (CRM), K-means clustering algorithm, Recency-Frequency-Monetary (RFM) analysis model, Rough set theory (RST), Target customer segment (TCS)

You-Shyang Chen; Ching-Hsue Cheng; Chien-Jung Lai; Cheng-Yi Hsu; Han-Jhou Syu

2012-02-01T23:59:59.000Z

430

Stage I-IIA Non-Bulky Hodgkin's Lymphoma. Is Further Distinction Based on Prognostic Factors Useful? The Stanford Experience  

SciTech Connect

Purpose: In the United States, early-stage Hodgkin's lymphoma (HL) is defined as asymptomatic stage I/II non-bulky disease. European groups stratify patients to more intense treatment by considering additional unfavorable factors, such as age, number of nodal sites, sedimentation rate, extranodal disease, and elements of the international prognostic score for advanced HL. We sought to determine the prognostic significance of these factors in patients with early-stage disease treated at Stanford University Medical Center. Methods and Materials: This study was a retrospective analysis of 101 patients treated with abbreviated Stanford V chemotherapy (8 weeks) and 30-Gy (n = 84 patients) or 20-Gy (n = 17 patients) radiotherapy to involved sites. Outcomes were assessed after applying European risk factors. Results: At a median follow-up of 8.5 years, freedom from progression (FFP) and overall survival (OS) rates were 94% and 97%, respectively. From 33% to 60% of our patients were unfavorable per European criteria (i.e., German Hodgkin Study Group [GHSG], n = 55%; European Organization for Research and Treatment of Cancer, n = 33%; and Groupe d'Etudes des Lymphomes de l'Adulte, n = 61%). Differences in FFP rates between favorable and unfavorable patients were significant only for GHSG criteria (p = 0.02) with there were no differences in OS rates for any criteria. Five of 6 patients who relapsed were successfully salvaged. Conclusions: The majority of our patients deemed unfavorable had an excellent outcome despite undergoing a significantly abbreviated regimen. Application of factors used by the GHSG defined a less favorable subset for FFP but with no impact on OS. As therapy for early-stage disease moves to further reductions in therapy, these factors take on added importance in the interpretation of current trial results and design of future studies.

Advani, Ranjana H., E-mail: radvani@stanford.edu [Department of Medicine, Division of Medical Oncology, Stanford University Medical Center, Stanford, California (United States); Hoppe, Richard T. [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States); Maeda, Lauren S. [Department of Medicine, Division of Medical Oncology, Stanford University Medical Center, Stanford, California (United States); Baer, David M. [Northern California Kaiser Permanente, Oakland, California (United States); Mason, Joseph [Northern California Kaiser Permanente, San Jose, California (United States); Rosenberg, Saul A.; Horning, Sandra J. [Department of Medicine, Division of Medical Oncology, Stanford University Medical Center, Stanford, California (United States)

2011-12-01T23:59:59.000Z

431

Uncertainty analysis of an IGCC system with single-stage entrained-flow gasifier  

Science Conference Proceedings (OSTI)

Integrated Gasification Combined Cycle (IGCC) systems using coal gasification is an attractive option for future energy plants. Consequenty, understanding the system operation and optimizing gasifier performance in the presence of uncertain operating conditions is essential to extract the maximum benefits from the system. This work focuses on conducting such a study using an IGCC process simulation and a high-fidelity gasifier simulation coupled with stochastic simulation and multi-objective optimization capabilities. Coal gasifiers are the necessary basis of IGCC systems, and hence effective modeling and uncertainty analysis of the gasification process constitutes an important element of overall IGCC process design and operation. In this work, an Aspen Plus{reg_sign} steady-state process model of an IGCC system with carbon capture enables us to conduct simulation studies so that the effect of gasification variability on the whole process can be understood. The IGCC plant design consists of an single-stage entrained-flow gasifier, a physical solvent-based acid gas removal process for carbon capture, two model-7FB combustion turbine generators, two heat recovery steam generators, and one steam turbine generator in a multi-shaft 2x2x1 configuration. In the Aspen Plus process simulation, the gasifier is represented as a simplified lumped-parameter, restricted-equilibrium reactor model. In this work, we also make use of a distributed-parameter FLUENT{reg_sign} computational fluid dynamics (CFD) model to characterize the uncertainty for the entrained-flow gasifier. The CFD-based gasifer model is much more comprehensive, predictive, and hence better suited to understand the effects of uncertainty. The possible uncertain parameters of the gasifier model are identified. This includes input coal composition as well as mass flow rates of coal, slurry water, and oxidant. Using a selected number of random (Monte Carlo) samples for the different parameters, the CFD model is simulated to observe the variations in the output variables (such as syngas composition, gas and ash flow rates etc.). The same samples are then used to conduct simulations using the Aspen Plus IGCC model. The simulation results for the high-fidelity CFD-based gasifier model and the Aspen Plus equilibrium reactor model for selected uncertain parameters are then used to perform the estimation. Defining the ratio of CFD based results to the Aspen Plus result as the uncertainty factor (UF), the work quantifies the extent of uncertainty and then uses uniform* distribution to characterize the uncertainty factor distribution. The characterization and quantification of uncertainty is then used to conduct stochastic simulation of the IGCC system in Aspen Plus. The CAPE-OPEN compliant stochastic simulation capability allows one to conduct a rigorous analysis and generate the feasible space for the operation of the IGCC system. The stochastic simulation results can later be used to conduct multi-objective optimization of the gasifier using a set of identified decision variables. The CAPE-OPEN compliant multi-objective capability in Aspen Plus can be used to conduct the analysis. Since the analysis is based on the uncertainty modeling studies of the gasifier, the optimization accounts for possible uncertainties in the operation of the system. The results for the optimized IGCC system and the gasifier, obtained from the stochastic simulation results, are expected to be more rigorous and hence closer to those obtained from CFD-based rigorous modeling.

Shastri, Y.; Diwekar, U.; Zitney, S.

2008-01-01T23:59:59.000Z

432

FADD Expression as a Prognosticator in Early-Stage Glottic Squamous Cell Carcinoma of the Larynx Treated Primarily With Radiotherapy  

Science Conference Proceedings (OSTI)

Purpose: We recently reported on the identification of the Fas-associated death domain (FADD) as a possible driver of the chromosome 11q13 amplicon and the association between increased FADD expression and disease-specific survival in advanced-stage laryngeal carcinoma. The aim of this study was to examine whether expression of FADD and its Ser194-phosphorylated isoform (pFADD) predicts local control in patients with early-stage glottic carcinoma primarily treated with radiotherapy only. Methods and Materials: Immunohistochemical staining for FADD and pFADD was performed on pretreatment biopsy specimens of 92 patients with T1-T2 glottic squamous cell carcinoma primarily treated with radiotherapy between 1996 and 2005. Cox regression analysis was used to correlate expression levels with local control. Results: High levels of pFADD were associated with significantly better local control (hazard ratio, 2.40; 95% confidence interval, 1.04-5.55; p = 0.040). FADD overexpression showed a trend toward better local control (hazard ratio, 3.656; 95% confidence interval, 0.853-15.663; p = 0.081). Multivariate Cox regression analysis showed that high pFADD expression was the best predictor of local control after radiotherapy. Conclusions: This study showed that expression of phosphorylated FADD is a new prognostic biomarker for better local control after radiotherapy in patients with early-stage glottic carcinomas.

Schrijvers, Michiel L. [Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Pattje, Wouter J. [Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Slagter-Menkema, Lorian [Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Mastik, Mirjam F.; Gibcus, Johan H. [Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Langendijk, Johannes A. [Department of Radiation Oncology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Wal, Jacqueline E. van der [Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Laan, Bernard F.A.M. vn der [Department of Otorhinolaryngology/Head and Neck Surgery, University Medical Center Groningen, University of Groningen, Groningen (Netherlands); Schuuring, E., E-mail: e.schuuring@umcg.nl [Department of Pathology, University Medical Center Groningen, University of Groningen, Groningen (Netherlands)

2012-07-15T23:59:59.000Z

433

Investigation of mineral transformation and ash deposition during staged combustion. Final report, October 1, 1993--September 30, 1997  

Science Conference Proceedings (OSTI)

The purpose of this report is to document a recently completed four-year study to examine the impact of low-NOx firing technologies on ash formation and deposition while firing pulverized coal. Low-NOx burners and staged combustion inhibit NOx formation by restricting the amount of oxygen available to form a fuel-rich zone in which nitrogen compounds are reduced to molecular nitrogen (N{sub 2}) rather than oxidized. Additional oxygen is provided downstream for complete combustion. Consequently, coal and mineral particles encounter different temperatures and oxygen concentrations when they are burned under low-NOx firing conditions than they do in conventionally-fired units. Two coals with distinctly different inorganic contents and ash characteristics were fired in a pilot-scale laboratory combustor under both conventional and staged combustion conditions. Ash and deposit samples were collected at various locations in the reactor and analyzed in order to assess the influence of staged combustion. This report is organized as follows. First, a background section provides the foundation needed in order to understand the motivation for and the results of the experimental program. The next section presents a description of the experimental apparatus and procedures, including the development the analytical methods critical to the study. Results of the analyses of coal, ash and deposit samples are then presented and discussed for each of the two coals. Finally, the report ends with a short summary and statement of conclusions.

Harb, J.N.

1997-12-31T23:59:59.000Z

434

Hazardous Waste Code Determinations for the First/Second Stage Sludge Waste Stream (IDCs 001, 002, 800)  

Science Conference Proceedings (OSTI)

This document, Hazardous Waste Code Determination for the First/Second-Stage Sludge Waste Stream, summarizes the efforts performed at the Idaho National Engineering and Environmental Laboratory (INEEL) to make a hazardous waste code determination on Item Description Codes (IDCs) 001, 002, and 800 drums. This characterization effort included a thorough review of acceptable knowledge (AK), physical characterization, waste form sampling, chemical analyses, and headspace gas data. This effort included an assessment of pre-Waste Analysis Plan (WAP) solidified sampling and analysis data (referred to as preliminary data). Seventy-five First/Second-Stage Sludge Drums, provided in Table 1-1, have been subjected to core sampling and analysis using the requirements defined in the Quality Assurance Program Plan (QAPP). Based on WAP defined statistical reduction, of preliminary data, a sample size of five was calculated. That is, five additional drums should be core sampled and analyzed. A total of seven drums were sampled, analyzed, and validated in compliance with the WAP criteria. The pre-WAP data (taken under the QAPP) correlated very well with the WAP compliant drum data. As a result, no additional sampling is required. Based upon the information summarized in this document, an accurate hazardous waste determination has been made for the First/Second-Stage Sludge Waste Stream.

Arbon, Rodney Edward

2001-01-01T23:59:59.000Z

435

Numerical and Experimental Analysis of Multi-Stage Axial Turbine Performance at Design and Off-Design Conditions  

E-Print Network (OSTI)

Computational fluid dynamics or CFD isan importanttool thatis used at various stages in the design of highly complex turbomachinery such as compressorand turbine stages that are used in land and air based power generation units. The ability of CFD to predict the performance characteristics of a specific blade design is challenged by the need to use various turbulence models to simulate turbulent flows as well as transition models to simulate laminar to turbulent transition that can be observed in various turbomachinery designs. Moreover, CFD is based on numerically solving highly complex differential equations, which through the use of a grid to discretize the geometry introduces numerical errors. Allthese factors combine to challenge CFD’s role as a predictor of blade performance. It has been generallyfound that CFD in its current state of the art is best used to compare between various design points and not as a pure predictor of performances. In this study the capability of CFD, and turbulence modeling, in turbomachinery based geometry is assessed.Three different blade designs are tested, that include an advanced two-stage turbine blade design, a three stage 2D or cylindrical design and finally a three stage bowed stator and rotor design. Allcases were experimentally tested at the Texas A&Muniversity Turbomachinery Performance and Flow Research Laboratory (TPFL).In all cases CFD provided good insights into fundamental turbomachinery flow physics, showing the expected improvement from using 2D cylindrical blades to 3D bowed blade designs in abating the secondary flow effects which are dominant loss generators.However, comparing experimentally measured performance results to numerically predicted shows a clear deficiency, where the CFD overpredicts performance when compared to experimentallyobtained data, largely underestimating the various loss mechanisms. In a relative sense, CFD as a tool allows the user to calculate the impact a new feature or change can have on a baseline design. CFD will also provide insight into what are the dominant physics that explain why a change can provide an increase or decrease in performance. Additionally,as part of this study, one of the main factors that affect the performance of modern turbomachinery is transition from laminar to turbulent flow.Transition is an influential phenomena especially in high pressure turbines, and is sensitive to factors such asupstream incidentwake frequency and turbulence intensity.A model experimentally developed, is implemented into a CFD solver and compared to various test results showing greater capability in modeling the effects of reduced frequency on the transition point and transitional flow physics. This model is compared to industry standard models showing favorable prediction performance due to its abilityto account for upstream wake effects which most current model are unable to account for.

Abdelfattah, Sherif Alykadry

2013-08-01T23:59:59.000Z

436

Empirical impact evaluation of the energy savings resulting from BPA's Stage II irrigation system retrofit program: Final report  

SciTech Connect

This report documents the results of an evaluation of the impacts on irrigation system energy consumption of conservation measures installed under the Bonneville Power Administration's Stage II retrofit program. Historical billing data and other farm records provided the basis for this evaluation. A number of different statistical techniques were used to estimate the actual energy savings resulting from the Stage II conservation measures. Results of the study reveal that the methodology used in predicting energy savings resulting from the Stage II program is accurate. The basis for energy savings predictions in the Stage II program are changes in brake horsepower, and, in this study, a 1% change in brake horsepower was found to result in slightly more than a 1% change in energy consumption. Overall, Stage II program conservation measures were found to reduce irrigation system energy use by an average of 34%. The average costs of obtaining these savings were 6 mills (.6 cents) per kWh saved.

Harrer, B.J.; Tawil, J.W.; Lyke, A.J.; Nieves, L.A.; Edin, E.S.; Bailey, B.M.

1987-07-01T23:59:59.000Z

437

Shifting the stage: Staging with delimited control  

Science Conference Proceedings (OSTI)

It is often hard to write programs that are efficient yet reusable. For example, an efficient implementation of Gaussian elimination should be specialized to the structure and known static properties of the input matrix. The most profitable optimizations, ...

Yukiyoshi Kameyama; Oleg Kiselyov; Chung-chieh Shan

2011-11-01T23:59:59.000Z

438

Comparative Effectiveness of 5 Treatment Strategies for Early-Stage Non-Small Cell Lung Cancer in the Elderly  

SciTech Connect

Purpose: The incidence of early-stage non-small cell lung cancer (NSCLC) among older adults is expected to increase because of demographic trends and computed tomography-based screening; yet, optimal treatment in the elderly remains controversial. Using the Surveillance, Epidemiology, and End Results (SEER)-Medicare cohort spanning 2001-2007, we compared survival outcomes associated with 5 strategies used in contemporary practice: lobectomy, sublobar resection, conventional radiation therapy, stereotactic ablative radiation therapy (SABR), and observation. Methods and Materials: Treatment strategy and covariates were determined in 10,923 patients aged {>=}66 years with stage IA-IB NSCLC. Cox regression, adjusted for patient and tumor factors, compared overall and disease-specific survival for the 5 strategies. In a second exploratory analysis, propensity-score matching was used for comparison of SABR with other options. Results: The median age was 75 years, and 29% had moderate to severe comorbidities. Treatment distribution was lobectomy (59%), sublobar resection (11.7%), conventional radiation (14.8%), observation (12.6%), and SABR (1.1%). In Cox regression analysis with a median follow-up time of 3.2 years, SABR was associated with the lowest risk of death within 6 months of diagnosis (hazard ratio [HR] 0.48; 95% confidence interval [CI] 0.38-0.63; referent is lobectomy). After 6 months, lobectomy was associated with the best overall and disease-specific survival. In the propensity-score matched analysis, survival after SABR was similar to that after lobectomy (HR 0.71; 95% CI 0.45-1.12; referent is SABR). Conventional radiation and observation were associated with poor outcomes in all analyses. Conclusions: In this population-based experience, lobectomy was associated with the best long-term outcomes in fit elderly patients with early-stage NSCLC. Exploratory analysis of SABR early adopters suggests efficacy comparable with that of surgery in select populations. Evaluation of these therapies in randomized trials is urgently needed.

Shirvani, Shervin M. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Jiang, Jing [Department of Biostatistics and Applied Mathematics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Biostatistics and Applied Mathematics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Chang, Joe Y.; Welsh, James W.; Gomez, Daniel R. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Swisher, Stephen [Department of Thoracic and Cardiovascular Surgery, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Thoracic and Cardiovascular Surgery, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Buchholz, Thomas A. [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Smith, Benjamin D., E-mail: bsmith3@mdanderson.org [Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

2012-12-01T23:59:59.000Z

439

High-temperature-staged fluidized-bed combustion (HITS), bench scale experimental test program conducted during 1980. Final report  

Science Conference Proceedings (OSTI)

An experimental program was conducted to evaluate the process feasibility of the first stage of the HITS two-stage coal combustion system. Tests were run in a small (12-in. ID) fluidized bed facility at the Energy Engineering Laboratory, Aerojet Energy Conversion Company, Sacramento, California. The first stage reactor was run with low (0.70%) and high (4.06%) sulfur coals with ash fusion temperatures of 2450/sup 0/ and 2220/sup 0/F, respectively. Limestone was used to scavenge the sulfur. The produced low-Btu gas was burned in a combustor. Bed temperature and inlet gas percent oxygen were varied in the course of testing. Key results are summarized as follows: the process was stable and readily controllable, and generated a free-flowing char product using coals with low (2220/sup 0/F) and high (2450/sup 0/F) ash fusion temperatures at bed temperatures of at least 1700/sup 0/ and 1800/sup 0/F, respectively; the gaseous product was found to have a total heating value of about 120 Btu/SCF at 1350/sup 0/F, and the practicality of cleaning the hot product gas and delivering it to the combustor was demonstrated; sulfur capture efficiencies above 80% were demonstrated for both low and high sulfur coals with a calcium/sulfur mole ratio of approximately two; gasification rates of about 5,000 SCF/ft/sup 2/-hr were obtained for coal input rates ranging from 40 to 135 lbm/hr, as required to maintain the desired bed temperatures; and the gaseous product yielded combustion temperatures in excess of 3000/sup 0/F when burned with preheated (900/sup 0/F) air. The above test results support the promise of the HITS system to provide a practical means of converting high sulfur coal to a clean gas for industrial applications. Sulfur capture, gas heating value, and gas production rate are all in the range required for an effective system. Planning is underway for additional testing of the system in the 12-in. fluid bed facility, including demonstration of the second stage char burnup reactor.

Anderson, R E; Jassowski, D M; Newton, R A; Rudnicki, M L

1981-04-01T23:59:59.000Z

440

Pretreatment Staging Positron Emission Tomography/Computed Tomography in Patients With Inflammatory Breast Cancer Influences Radiation Treatment Field Designs  

SciTech Connect

Purpose: Positron emission tomography/computed tomography (PET/CT) is increasingly being utilized for staging of inflammatory breast cancer (IBC). The purpose of this study was to define how pretreatment PET/CT studies affected postmastectomy radiation treatment (PMRT) planning decisions for IBC. Methods and Materials: We performed a retrospective analysis of 62 patients diagnosed with IBC between 2004 and 2009, who were treated with PMRT in our institution and who had a staging PET/CT within 3 months of diagnosis. Patients received a baseline physical examination, staging mammography, ultrasonographic examination of breast and draining lymphatics, and chest radiography; most patients also had a bone scan (55 patients), liver imaging (52 patients), breast MRI (46 patients), and chest CT (25 patients). We compared how PET/CT findings affected PMRT, assuming that standard PMRT would target the chest wall, level III axilla, supraclavicular fossa, and internal mammary chain (IMC). Any modification of target volumes, field borders, or dose prescriptions was considered a change. Results: PET/CT detected new areas of disease in 27 of the 62 patients (44%). The areas of additional disease included the breast (1 patient), ipsilateral axilla (1 patient), ipsilateral supraclavicular (4 patients), ipsilateral infraclavicular (1 patient), ipsilateral IMC (5 patients), ipsilateral subpectoral (3 patients), mediastinal (8 patients), other distant/contralateral lymph nodes (15 patients), or bone (6 patients). One patient was found to have a non-breast second primary tumor. The findings of the PET/CT led to changes in PMRT in 11 of 62 patients (17.7%). These changes included additional fields in 5 patients, adjustment of fields in 2 patients, and higher doses to the supraclavicular fossa (2 patients) and IMC (5 patients). Conclusions: For patients with newly diagnosed IBC, pretreatment PET/CT provides important information concerning involvement of locoregional lymph nodes, mediastinal lymph nodes, and unsuspected sites of distant metastasis. This information is important in the design of radiotherapy treatment fields and, therefore, we recommend that PET/CT be a component of initial staging for IBC.

Walker, Gary V. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Niikura, Naoki [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan)] [Department of Breast and Endocrine Surgery, Tokai University School of Medicine, Kanagawa (Japan); Yang Wei [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Diagnostic Radiology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Rohren, Eric [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Nuclear Medicine, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Valero, Vicente [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Woodward, Wendy A. [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Alvarez, Ricardo H. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Lucci, Anthony [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Surgical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Ueno, Naoto T. [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Department of Breast Medical Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Buchholz, Thomas A., E-mail: tbuchhol@mdanderson.org [Department of Radiation Oncology, Morgan Welch Inflammatory Breast Cancer Clinic, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

2012-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "230-kilovolt switchyards stage" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Analysis and experimental results of a single-stage high-power-factor electronic ballast based on flyback converter  

SciTech Connect

A new single-stage high-power-factor electronic ballast based on a flyback converter is presented in this paper. The ballast is able to supply a fluorescent lamp assuring a high-input power factor for the utility line. Other features are lamp power regulation against line voltage variations and low lamp current crest factor, both assuring long lamp life. The ballast is analyzed at steady-state operation, and design equations and characteristics are obtained. Also, a procedure for the ballast design is presented. Finally, simulation and experimental results from a laboratory prototype are shown.

Calleja, A.J.; Alonso, J.M.; Lopez, E.; Ribas, J.; Martinez, J.A.; Rico-Secades, M.

1999-11-01T23:59:59.000Z

442

Interface and process for enhanced transmission of non-circular ion beams between stages at unequal pressure  

DOE Patents (OSTI)

The invention discloses a new interface with non-circular conductance limit aperture(s) useful for effective transmission of non-circular ion beams between stages with different gas pressure. In particular, the invention provides an improved coupling of field asymmetric waveform ion mobility spectrometry (FAIMS) analyzers of planar or side-to-side geometry to downstream stages such as mass spectrometry or ion mobility spectrometry. In this case, the non-circular aperture is rectangular; other geometries may be optimum in other applications. In the preferred embodiment, the non-circular aperture interface is followed by an electrodynamic ion funnel that may focus wide ion beams of any shape into tight circular beams with virtually no losses. The jet disrupter element of the funnel may also have a non-circular geometry, matching the shape of arriving ion beam. The improved sensitivity of planar FAIMS/MS has been demonstrated in experiments using a non-contiguous elongated aperture but other embodiments (e.g., with a contiguous slit aperture) may be preferable, especially in conjunction with an ion funnel operated at high pressures.

Tang, Keqi (Richland, WA); Shvartsburg, Alexandre A. (Richland, WA); Smith, Richard D. (Richland, WA)

2008-03-04T23:59:59.000Z

443

Fast in-situ annealing stage coupled with EBSD: A suitable tool to observe quick recrystallization mechanisms  

SciTech Connect

A heating stage has been developed to perform in-situ annealing in a SEM equipped with an EBSD system in order to study recrystallization mechanisms. High temperature treatments could then be performed inside the SEM, up to 1180 Degree-Sign C and with high heating and cooling rates ({approx} 100 Degree-Sign C s{sup -1}). Samples were cooled down to room temperature to perform EBSD orientation mapping in between successive short-duration heat treatments. Microstructure evolution snapshots obtained this way allow gaining an insight into recrystallization mechanisms. The interest of such experiments is shown for two examples: static recrystallization of cold deformed pure tantalum and post-dynamic evolution of hot-deformed Zircaloy4. - Highlights: Black-Right-Pointing-Pointer Heating stage for in-SEM annealing at high temperature (up to 1200 Degree-Sign C). Black-Right-Pointing-Pointer High heating and cooling rates (100 Degree-Sign C s{sup -1}), no temperature overshoot. Black-Right-Pointing-Pointer Sequential observation of very fast recrystallization mechanisms.

Bozzolo, N., E-mail: nathalie.bozzolo@mines-paristech.fr; Jacomet, S.; Loge, R.E.

2012-08-15T23:59:59.000Z

444

V753 MON: A UNIQUE CLOSE BINARY JUST AFTER THE EVOLUTIONARY STAGE WITH THE SHORTEST PERIOD DURING MASS TRANSFER  

SciTech Connect

We discovered that the O-C curve of V753 Mon shows an upward parabolic change while undergoing a cyclic variation with a period of 13.5 yr. The upward parabolic change reveals a long-term period increase at a rate of P-dot = +7.8 x 10{sup -8} days yr{sup -1}. Photometric solutions determined using the Wilson-Devinney method confirm that V753 Mon is a semi-detached binary system where the slightly less massive, hotter component star is transferring mass to the more massive one. This is in agreement with the long-term increase of the orbital period. The increase of the orbital period, the mass ratio very close to unity, and the semi-detached configuration with a less massive lobe-filling component all suggest that V753 Mon is on a key evolutionary stage just after the evolutionary stage with the shortest period during mass transfer. The results in this paper will shed light on the formation of massive contact binaries and the evolution of binary stars. The cyclic oscillation in the O-C diagram indicates that V753 Mon may be a triple system containing an extremely cool stellar companion that may play an important role for the formation and evolution in the binary system.