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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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1

Voltage controlled current source  

DOE Patents [OSTI]

A seven decade, voltage controlled current source is described for use in testing intermediate range nuclear instruments that covers the entire test current range of from 10 picoamperes to 100 microamperes. High accuracy is obtained throughout the entire seven decades of output current with circuitry that includes a coordinated switching scheme responsive to the input signal from a hybrid computer to control the input voltage to an antilog amplifier, and to selectively connect a resistance to the antilog amplifier output to provide a continuous output current source as a function of a preset range of input voltage. An operator controlled switch provides current adjustment for operation in either a real-time simulation test mode or a time response test mode.

Casne, Gregory M. (Pittsburgh, PA)

1992-01-01T23:59:59.000Z

2

Environmental Technology Verification of Mobile Sources Control...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Environmental Technology Verification of Mobile Sources Control Technologies Environmental Technology Verification of Mobile Sources Control Technologies 2005 Diesel Engine...

3

Controlled Source Audio MT | Open Energy Information  

Open Energy Info (EERE)

Controlled Source Audio MT Controlled Source Audio MT Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Controlled Source Audio MT Details Activities (5) Areas (5) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Magnetotelluric Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Cost Information Low-End Estimate (USD): 1,866.44186,644 centUSD

4

Controlling proton source speeds catalyst | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Controlling proton source speeds catalyst Controlling proton source speeds catalyst Nickel-based catalyst three times faster with adjustments to key acid Research showing that...

5

Mercury Effects, Sources and Control Measures  

E-Print Network [OSTI]

Mercury Effects, Sources and Control Measures Prepared by Alan B. Jones, Brooks Rand, Ltd., Seattle ................................................................................................................................1 MERCURY SOURCES....................................................................................................................................................................................8 Mercury dumping from naval vessels

6

Controlled Source Frequency-Domain Magnetics At Salt Wells Area  

Open Energy Info (EERE)

Controlled Source Frequency-Domain Magnetics At Salt Wells Area Controlled Source Frequency-Domain Magnetics At Salt Wells Area (Montgomery, Et Al., 2005) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Controlled Source Frequency-Domain Magnetics At Salt Wells Area (Montgomery, Et Al., 2005) Exploration Activity Details Location Salt Wells Area Exploration Technique Controlled Source Frequency-Domain Magnetics Activity Date 2004 - 2004 Usefulness useful DOE-funding Unknown Exploration Basis AMP Resource contracted Willowstick Technologies, LLC to conduct a Controlled Source-Frequency Domain Magnetics (CS-FDM) geophysical investigation at Salt Wells in order to characterize and delineate areas showing the greatest concentrations and highest temperatures of geothermal groundwater. The investigation also sought to map blind faults beneath the

7

The Advanced Photon Source main control room  

SciTech Connect (OSTI)

The Advanced Photon Source at Argonne National Laboratory is a third-generation light source built in the 1990s. Like the machine itself, the Main Control Room (MCR) employs design concepts based on today`s requirements. The discussion will center on ideas used in the design of the MCR, the comfort of personnel using the design, and safety concerns integrated into the control room layout.

Pasky, S.

1998-07-01T23:59:59.000Z

8

Beam current controller for laser ion source  

DOE Patents [OSTI]

The present invention relates to the design and use of an ion source with a rapid beam current controller for experimental and medicinal purposes. More particularly, the present invention relates to the design and use of a laser ion source with a magnetic field applied to confine a plasma flux caused by laser ablation.

Okamura, Masahiro

2014-10-28T23:59:59.000Z

9

Definition: Controlled Source Audio MT | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Controlled Source Audio MT Jump to: navigation, search Dictionary.png Controlled Source Audio MT Controlled Source Audio-Magnetotellurics (CSAMT) is an active source application of a magnetotelluric survey aimed at providing a more reliable signal and rapid acquisition time relative to a natural source MT measurement.[1] View on Wikipedia Wikipedia Definition Magnetotellurics (MT) is an electromagnetic geophysical method of imaging the earth's subsurface by measuring natural variations of electrical and magnetic fields at the Earth's surface. Investigation depth ranges from 300m below ground by recording higher frequencies down to 10,000m or deeper with long-period soundings. Developed in Russia and

10

Controlled Source Audio MT At Pilgrim Hot Springs Area (DOE GTP...  

Open Energy Info (EERE)

Details Location Pilgrim Hot Springs Area Exploration Technique Controlled Source Audio MT Activity Date Usefulness not indicated DOE-funding Unknown References (1 January...

11

Controlled Source Frequency-Domain Magnetics | Open Energy Information  

Open Energy Info (EERE)

Controlled Source Frequency-Domain Magnetics Controlled Source Frequency-Domain Magnetics Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Controlled Source Frequency-Domain Magnetics Details Activities (2) Areas (2) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Magnetic Techniques Parent Exploration Technique: Magnetic Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Locate geothermal groundwater and flow patterns. Thermal: Cost Information Low-End Estimate (USD): 12,000.001,200,000 centUSD 12 kUSD 0.012 MUSD 1.2e-5 TUSD / mile Median Estimate (USD): 18,000.001,800,000 centUSD 18 kUSD 0.018 MUSD 1.8e-5 TUSD / mile High-End Estimate (USD): 25,000.002,500,000 centUSD

12

Sealed Radioactive Source Accountability and Control Guide  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

For use with Title 10, Code of Federal Regulations, Part 835, Occupational Radiation Protection. This Guide provides an acceptable methodology for establishing and operating a sealed radioactive source accountability and control program that will comply with U.S. Department of Energy (DOE) requirements specified in Title 10 of the Code of Federal Regulations (CFR), Part 835, Occupational Radiation Protection (DOE 1998a), hereinafter referred to as 10 CFR 835. In particular, this Guide provides guidance for achieving compliance with subpart M of 10 CFR 835. Canceled by DOE G 441.1-1B.

1999-04-15T23:59:59.000Z

13

Advanced Light Source: Activity report 1993  

SciTech Connect (OSTI)

The Advanced Light Source (ALS) produces the world`s brightest light in the ultraviolet and soft x-ray regions of the spectrum. The first low-energy third-generation synchrotron source in the world, the ALS provides unprecedented opportunities for research in science and technology not possible anywhere else. This year marked the beginning of operations and the start of the user research program at the ALS, which has already produced numerous high quality results. A national user facility located at Lawrence Berkeley Laboratory of the University of California, the ALS is available to researchers from academia, industry, and government laboratories. This report contains the following: (1) director`s message; (2) operations overview; (3) user program; (4) users` executive committee; (5) industrial outreach; (6) accelerator operations; (7) beamline control system; (8) insertion devices; (9) experimental systems; (10) beamline engineering; (11) first results from user beamlines; (12) beamlines for 1994--1995; (13) special events; (14) publications; (15) advisory panels; and (16) ALS staff.

Not Available

1994-11-01T23:59:59.000Z

14

Maximum Constant Boost Control of the Z-Source Inverter  

E-Print Network [OSTI]

Maximum Constant Boost Control of the Z-Source Inverter Miaosen Shen1 , Jin Wang1 , Alan Joseph1 Laboratory Abstract: This paper proposes two maximum constant boost control methods for the Z-source inverter to modulation index is analyzed in detail and verified by simulation and experiment. Keywords- Z-source inverter

Tolbert, Leon M.

15

NREL: Wind Research - NREL and EPRI Actively Embrace Active Power Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and EPRI Actively Embrace Active Power Control Systems for Wind Power and EPRI Actively Embrace Active Power Control Systems for Wind Power December 2, 2013 The Second Workshop on Active Power Control (APC) cohosted by the National Renewable Energy Laboratory (NREL) and the Electric Power Research Institute (EPRI) in Broomfield, Colorado, last May drew more than 60 industry experts from around the world to participate in a comprehensive discussion about the need for and impacts of active power controls from wind plants. Various forms of active power control can help stabilize the grid by enabling generating sources to increase or decrease power output to meet the constantly fluctuating needs of meeting the load demand and avoid events that can cause brownouts and power failures. The three forms of active power control discussed during the workshop were inertial control,

16

Model-based Controllers for Semi-active Control  

E-Print Network [OSTI]

damper Base isolation TLCD Semi-active Control Active mass driver Active tendon Variable orifice damper/13/2012Page 11 Linearized explicit approximation Small perturbations Accuracy of the assumed rappresentation

17

High Dynamic Performance Programmed PWM Control of a Multilevel Inverter with Capacitor DC Sources  

E-Print Network [OSTI]

High Dynamic Performance Programmed PWM Control of a Multilevel Inverter with Capacitor DC Sources inverter consisting of a stan- dard 3-leg inverter supplied by a DC source and three full H-bridges each reactive voltage to the motor while the standard three leg inverter can supply both reactive and active

Tolbert, Leon M.

18

Modelling and Control of Activated Sludge Processes  

E-Print Network [OSTI]

Modelling and Control of Activated Sludge Processes Michela Mulas Dottorato di Ricerca of Activated Sludge Processes Michela Mulas Supervisors: Prof. Roberto Baratti Ing. Stefania Tronci Dottorato . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 ASP Models and Simulations 7 2.1 The Activated Sludge Process

Skogestad, Sigurd

19

Advanced Light Source Activity Report 2002  

SciTech Connect (OSTI)

This annual report of the Advanced Light Source details science highlights and facility improvements during the year. It also offers information on events sponsored by the facility, technical specifications, and staff and publication information.

Duque, Theresa; Greiner, Annette; Moxon, Elizabeth; Robinson, Arthur; Tamura, Lori (Editors)

2003-06-12T23:59:59.000Z

20

Active Fault Segments As Potential Earthquake Sources- Inferences From  

Open Energy Info (EERE)

Active Fault Segments As Potential Earthquake Sources- Inferences From Active Fault Segments As Potential Earthquake Sources- Inferences From Integrated Geophysical Mapping Of The Magadi Fault System, Southern Kenya Rift Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Active Fault Segments As Potential Earthquake Sources- Inferences From Integrated Geophysical Mapping Of The Magadi Fault System, Southern Kenya Rift Details Activities (0) Areas (0) Regions (0) Abstract: Southern Kenya Rift has been known as a region of high geodynamic activity expressed by recent volcanism, geothermal activity and high rate of seismicity. The active faults that host these activities have not been investigated to determine their subsurface geometry, faulting intensity and constituents (fluids, sediments) for proper characterization of tectonic

Note: This page contains sample records for the topic "activity controlled source" 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

Renewable source controls for grid stability.  

SciTech Connect (OSTI)

The goal of this study was to evaluate the small signal and transient stability of the Western Electric- ity Coordinating Council (WECC) under high penetrations of renewable energy, and to identify control technologies that would improve the system performance. The WECC is the regional entity responsible for coordinating and promoting bulk electric system reliability in the Western Interconnection. Transient stability is the ability of the power system to maintain synchronism after a large disturbance while small signal stability is the ability of the power system to maintain synchronism after a small disturbance. Tran- sient stability analysis usually focuses on the relative rotor angle between synchronous machines compared to some stability margin. For this study we employed generator speed relative to system speed as a metric for assessing transient stability. In addition, we evaluated the system transient response using the system frequency nadir, which provides an assessment of the adequacy of the primary frequency control reserves. Small signal stability analysis typically identi es the eigenvalues or modes of the system in response to a disturbance. For this study we developed mode shape maps for the di erent scenarios. Prony analysis was applied to generator speed after a 1.4 GW, 0.5 second, brake insertion at various locations. Six di erent WECC base cases were analyzed, including the 2022 light spring case which meets the renewable portfolio standards. Because of the di culty in identifying the cause and e ect relationship in large power system models with di erent scenarios, several simulations were run on a 7-bus, 5-generator system to isolate the e ects of di erent con gurations. Based on the results of the study, for a large power system like the WECC, incorporating frequency droop into wind/solar systems provides a larger bene t to system transient response than replacing the lost inertia with synthetic inertia. From a small signal stability perspective, the increase in renewable penetration results in subtle changes to the system modes. In gen- eral, mode frequencies increase slightly, and mode shapes remain similar. The system frequency nadir for the 2022 light spring case was slightly lower than the other cases, largely because of the reduced system inertia. However, the nadir is still well above the minimum load shedding frequency of 59.5 Hz. Finally, several discrepancies were identi ed between actual and reported wind penetration, and additional work on wind/solar modeling is required to increase the delity of the WECC models.

Byrne, Raymond Harry; Elliott, Ryan Thomas; Neely, Jason C.; Silva Monroy, Cesar Augusto; Schoenwald, David Alan; Grant, Lisa

2012-12-01T23:59:59.000Z

22

Controlled Source Audio MT At Cove Fort Area - Liquid (Combs 2006) | Open  

Open Energy Info (EERE)

Cove Fort Area - Liquid (Combs 2006) Cove Fort Area - Liquid (Combs 2006) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Controlled Source Audio MT At Cove Fort Area (Combs 2006) Exploration Activity Details Location Cove Fort Geothermal Area Exploration Technique Controlled Source Audio MT Activity Date Usefulness not indicated DOE-funding Unknown Notes "SP, dipole-dipole resistivity, CSAMT; sufficient electrical data are available. Reservoir model?" References Jim Combs (1 January 2006) Historical Exploration And Drilling Data From Geothermal Prospects And Power Generation Projects In The Western United States Retrieved from "http://en.openei.org/w/index.php?title=Controlled_Source_Audio_MT_At_Cove_Fort_Area_-_Liquid_(Combs_2006)&oldid=598122"

23

Advanced light source. Activity report 1995  

SciTech Connect (OSTI)

The ALS Activity Report is designed to share the breadth, variety, and interest of the scientific program and ongoing R&D efforts in a form that is accessible to a broad audience. Recent research results are presented in six sections, each representing an important theme in ALS science. These results are designed to demonstrate the capabilities of the ALS, rather than to give a comprehensive review of 1995 experiments. Although the scientific program and facilities report are separate sections, in practice the achievements and accomplishments of users and ALS staff are interdependent. This user-staff collaboration is essential to help us direct our efforts toward meeting the needs of the user community, and to ensure the continued success of the ALS as a premier facility.

NONE

1996-07-01T23:59:59.000Z

24

Definition: Controlled Source Frequency-Domain Magnetics | Open Energy  

Open Energy Info (EERE)

Frequency-Domain Magnetics Frequency-Domain Magnetics Jump to: navigation, search Dictionary.png Controlled Source Frequency-Domain Magnetics AquaTrackTM, a controlled-source frequency domain magnetics tool (CS-FDM), is a patented invention by Willowstick Technologies. This technique is meant to characterize groundwater conditions and flow patterns up to 1,000 m depth.[1] References ↑ http://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2006/kofoed.pdf Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Controlled_Source_Frequency-Domain_Magnetics&oldid=590084" Category: Definitions What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load)

25

Phase 1 immobilized low-activity waste operational source term  

SciTech Connect (OSTI)

This report presents an engineering analysis of the Phase 1 privatization feeds to establish an operational source term for storage and disposal of immobilized low-activity waste packages at the Hanford Site. The source term information is needed to establish a preliminary estimate of the numbers of remote-handled and contact-handled waste packages. A discussion of the uncertainties and their impact on the source term and waste package distribution is also presented. It should be noted that this study is concerned with operational impacts only. Source terms used for accident scenarios would differ due to alpha and beta radiation which were not significant in this study.

Burbank, D.A.

1998-03-06T23:59:59.000Z

26

NREL: Transmission Grid Integration - Active Power Controls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Active Power Controls Active Power Controls NREL has teamed with the Electric Power Research Institute, the Colorado School of Mines, the University of Colorado, and other industry members to research the potential of wind turbines and power plants to provide active power control (also known as real power or frequency control) to the electric power system. Under this multiyear project, researchers will perform simulations and field tests at the National Wind Technology Center to analyze system benefits and impacts on the operations of wind turbines and the electric power system. The project considers five topics: Steady state and economics Dynamic interconnection stability Controls design and simulation Controls testing and loads and structural impacts Dissemination of results.

27

Disposal Process for High Activity Sources by a University through the U.S. Dept. of Energy's Off-Site Source Recovery Project - 12076  

SciTech Connect (OSTI)

Sealed radioactive sources are used in a wide variety of applications by a large number of license holders in the Unites States. Applications range from low-activity calibration sources to high-activity irradiators for engineering, research, or medical purposes. This paper describes and evaluates the safety and security measures in place for disused sealed sources, in particular of high activity sealed sources at the end of their operational life-time. The technical, radiation protection, and financial challenges for licensees and the Competent Authorities are reviewed from the point of view of the license holder. As an example, the waste management processes and the chain of custody for disused research irradiator sources are followed from extraction from the irradiator facility to the source disposal or recycling contractor. Possible safety and security concern in the waste disposal process are investigated in order to identify improvement potential for radiation protection or source security. Two shipments of disused sealed sources from Colorado State University (CSU) have been conducted through the CSU Radiation Control Office (RCO) in the last two years, with a third shipment expected to be completed by the end of November 2011. Two of the sources shipped are considered 'high' activity and exceed the U.S. NRC limits requiring increased controls for security purposes. Three sources were shipped in 2009 and ten more are expected in 2011. A total activity of 117.3 GBq was shipped in 2009. Nine sources were recently shipped in October 2011 through a third party waste broker where the total activity was 96.34 GBq. The last source is scheduled for shipment no later than 30 November 2011 and contains an activity of 399.96 GBq. Radiation waste disposal of high activity sources in large shields with unknown manufacturers, serial numbers, or model numbers is an arduous process requiring multiple contacts with various state and federal agencies. DOE's OSRP has made it possible for CSU to dispose of older unused sources in an economically viable way. Disposal of multiple sources all at once was not an option prior to the establishment of the SCATR program. While CSU was able to dispose of sealed sources when funds were available, the cost to the University would have been prohibitive for this type of mass removal and disposal of radiation sources initiated within this initiative. Where we estimate a cost of about $130 k to ship these sources otherwise, CSU's contribution of $21 k realized a significant savings in what would have been an impossible disposal cost. Removing unused radiation sources from CSU has realized a cost savings while removing a potential security threat. (authors)

Abraham, James P. [Colorado State University Radiation Control Office, Department of Environmental Health Services, Fort Collins, CO. 80523-6021 (United States); Brandl, Alexander [Colorado State University, Department of Environmental and Radiological Health Sciences, Fort Collins CO. 80523-1618 (United States)

2012-07-01T23:59:59.000Z

28

Active vibration control of civil structures  

SciTech Connect (OSTI)

This is a final report of a one year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Active vibration control (AVC) of structural and mechanical systems is one of the rapidly advancing areas of engineering research. The multifaceted nature of AVC covers many disciplines, such as sensors and instrumentation, numerical modeling, experimental mechanics, and advanced power systems. This work encompassed a review of the literature on active control of structures focusing both on active control hardware and on control algorithms, a design of an isolation systems using magneto-rheological fluid-filled (MRF) dampers and numerical simulations to study the enhanced vibration mitigation effects of this technology.

Farrar, C.; Baker, W.; Fales, J.; Shevitz, D.

1996-11-01T23:59:59.000Z

29

Advanced Light Source Activity Report 1997/1998  

SciTech Connect (OSTI)

This Lawrence Berkeley National Laboratory, Advanced Light Source (ALS) activity report for 1997/98 discusses the following topics: Introduction and Overview; Science Highlights; Facility Report; Special Events; ALS Advisory Panels 1997/98; ALS Staff 1997/98 and Facts and Figures for the year.

Greiner, Annette (ed.)

1999-03-01T23:59:59.000Z

30

Active vibration control in a microgravity environment  

E-Print Network [OSTI]

ACTIVE VIBRATION COiVTROL IN A MICROGRAVITY ENVIRONMENT A Thesis MYOUNG SOO PARK Submitted to the Graduate College of Texas A@M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1987 Maior... Subject: Mechanical Engineering ACTIVE VIBRATION CONTROL IN A MICROGRAVITY ENVIRONMENT A Thesis by MYOUNG SOO PARK Approved as to style and content by: Dr. C. H. Gerhold (Chairman of Coxnmit tee) Dr. T ozi (Member) Dr. Y. XVe sman (Member) Dr...

Park, Myoung Soo

2012-06-07T23:59:59.000Z

31

Optimization of an Advanced Passive/Active Diesel Emission Control...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

an Advanced PassiveActive Diesel Emission Control System Optimization of an Advanced PassiveActive Diesel Emission Control System Evaluation of PM exhaust aftertreatment...

32

Seismic active control by neutral networks  

SciTech Connect (OSTI)

A study on the application of artificial neural networks (ANNs) to active structural control under seismic loads is carried out. The structure considered is a single-degree-of-freedom (SDF) system with an active bracing device. The control force is computed by a trained neural network. The feedforward neural network architecture and an adaptive backpropagation training algorithm is used in the study. The neural net is trained to reproduce the function that represents the response-excitation relationship of the SDF system under seismic loads. The input-output training patterns are generated randomly. In the backpropagation training algorithm, the learning rate is determined by ensuring the decrease of the error function at each epoch. The computer program implemented is validated by solving the classification of the XOR problem. Then, the trained ANN is used to compute the control force according to the control strategy. If the control force exceeds the actuator`s capacity limit, it is set equal to that limit. The concept of the control strategy employed herein is to apply the control force at every time step to cancel the system velocity induced at the preceding time step so that the gradual rhythmic buildup of the response is destroyed. The ground motions considered in the numerical example are the 1940 El Centro earthquake and the 1979 Imperial Valley earthquake in California. The system responses with and without the control are calculated and compared. The feasibility and potential of applying ANNs to seismic active control is asserted by the promising results obtained from the numerical examples studied.

Tang, Yu

1995-12-31T23:59:59.000Z

33

Seismic active control by neural networks.  

SciTech Connect (OSTI)

A study on the application of artificial neural networks (ANNs) to activate structural control under seismic loads is carried out. The structure considered is a single-degree-of-freedom (SDF) system with an active bracing device. The control force is computed by a trained neural network. The feed-forward neural network architecture and an adaptive back-propagation training algorithm is used in the study. The neural net is trained to reproduce the function that represents the response-excitation relationship of the SDF system under seismic loads. The input-output training patterns are generated randomly. In the back-propagation training algorithm, the learning rate is determined by ensuring the decrease of the error function at each epoch. The computer program implemented is validated by solving the classification of the XOR problem. Then, the trained ANN is used to compute the control force according to the control strategy. If the control force exceeds the actuator's capacity limit, it is set equal to that limit. The concept of the control strategy employed herein is to apply the control force at every time step to cancel the system velocity induced at the preceding time step so that the gradual rhythmic buildup of the response is destroyed. The ground motions considered in the numerical example are the 1940 El Centro earthquake and the 1979 Imperial Valley earthquake in California. The system responses with and without the control are calculated and compared. The feasibility and potential of applying ANNs to seismic active control is asserted by the promising results obtained from the numerical examples studied.

Tang, Y.

1998-01-01T23:59:59.000Z

34

Formadehyde in New Homes: Ventilation vs. Source Control  

Broader source: Energy.gov (indexed) [DOE]

at at Building America Residential Energy Efficiency Stakeholder Meeting March 1, 2012 Austin, Texas Formaldehyde in New Homes --- Ventilation vs. Source Control Brett C. Singer and Henry Willem Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Acknowledgments * Funding - U.S. Department of Energy - Building America Program - U.S. EPA - Indoor Environments Division - U.S. HUD - Office of Healthy Homes and Lead Hazard Control - Cal. Energy Commission Public Interest Environmental Research * Technical Contributions - Fraunhofer - Ibacos - IEE-SF * LBNL Team - Sherman, Hotchi, Russell, Stratton, and Others Background 1  Formaldehyde is an irritant and a carcinogen  Odor threshold: about 800 ppb  Widely varying health standards  US HUD (8-h): 400 ppb

35

Distributed Energy Communications & Controls, Lab Activities - Summary  

SciTech Connect (OSTI)

The purpose is to develop controls for inverter-based renewable and non-renewable distributed energy systems to provide local voltage, power and power quality support for loads and the power grid. The objectives are to (1) develop adaptive controls for inverter-based distributed energy (DE) systems when there are multiple inverters on the same feeder and (2) determine the impact of high penetration high seasonal energy efficiency ratio (SEER) air conditioning (A/C) units on power systems during sub-transmission faults which can result in an A/C compressor motor stall and assess how inverter-based DE can help to mitigate the stall event. The Distributed Energy Communications & Controls Laboratory (DECC) is a unique facility for studying dynamic voltage, active power (P), non-active power (Q) and power factor control from inverter-based renewable distributed energy (DE) resources. Conventionally, inverter-based DE systems have been designed to provide constant, close to unity power factor and thus not provide any voltage support. The DECC Lab interfaces with the ORNL campus distribution system to provide actual power system testing of the controls approach. Using mathematical software tools and the DECC Lab environment, we are developing and testing local, autonomous and adaptive controls for local voltage control and P & Q control for inverter-based DE. We successfully tested our active and non-active power (P,Q) controls at the DECC laboratory along with voltage regulation controls. The new PQ control along with current limiter controls has been tested on our existing inverter test system. We have tested both non-adaptive and adaptive control modes for the PQ control. We have completed several technical papers on the approaches and results. Electric power distribution systems are experiencing outages due to a phenomenon known as fault induced delayed voltage recovery (FIDVR) due to air conditioning (A/C) compressor motor stall. Local voltage collapse from FIDVR is occurring in part because modern air-conditioner and heat pump compressor motors are much more susceptible to stalling during a voltage sag or dip than older motors. These motors can stall in less than three cycles (0.05 s) when a fault, for example, on the sub-transmission system, causes voltage on the distribution system to sag to 70% or less of nominal. We completed a new test system for A/C compressor motor stall testing at the DECC Lab. The A/C Stall test system is being used to characterize when and how compressor motors stall under low voltage and high compressor pressure conditions. However, instead of using air conditioners, we are using high efficiency heat pumps. We have gathered A/C stall characterization data for both sustained and momentary voltage sags of the test heat pump. At low enough voltage, the heat pump stalls (compressor motor stops and draws 5-6 times normal current in trying to restart) due to low inertia and low torque of the motor. For the momentary sag, we are using a fast acting contactor/switch to quickly switch from nominal to the sagged voltage in cycles.

Rizy, D Tom [ORNL

2010-01-01T23:59:59.000Z

36

Self-absorbed synchroton sources in active galactic nuclei  

SciTech Connect (OSTI)

The properties of compact, homogeneous self-absorbed synchroton sources in active galactic nuclei are explored, calculating the time evolution of such sources after an impulsive injection of relativistic electrons, and the steady state properties in the case of steady injection. The models include synchroton self-Compton losses in a self consistent way. The behavior of the models is determined mainly by the relative importance of synchroton and inverse Compton energy losses. It is found that pure self-absorbed synchroton self-Compton models always predict a continuum spectral slope which is flatter than observed. The problem can be resolved either by including another cooling mechanism for the relativistic electrons, which operates preferentially at low gamma, such as Coulomb collisions with thermal background electrons, or by assuming that there is an external source of primary photons with a luminosity greater than the energy injection rate in relativistic electrons, e.g., the 'UV bump'. The latter possibility, however, predicts an X-ray luminosity which is higher than observed. 30 references.

De kool, M.; Begelman, M.C.; Sikora, M.

1989-02-01T23:59:59.000Z

37

Active Vibration Control Based on a 3-DOF Dual Compliant Parallel Robot Using LQR Algorithm  

E-Print Network [OSTI]

Active Vibration Control Based on a 3-DOF Dual Compliant Parallel Robot Using LQR Algorithm Yuan a careful isolation of the instrument from the vibration sources by adopting active vibration isolation system to achieve a very low remaining vibration level especially for the very low frequency under 10Hz

Li, Yangmin

38

ACTIVE VIBRATION CONTROL OF A SMART BEAM Yavuz Yaman1  

E-Print Network [OSTI]

1 ACTIVE VIBRATION CONTROL OF A SMART BEAM Yavuz Yaman1 , Tarkan ?alikan1 , Volkan Nalbantolu2, Collingwood, Ontario, Canada ABSTRACT This study presents an active vibration control technique applied this reduced model, presents the design of an active vibration controller which effectively suppresses

Yaman, Yavuz

39

Active vibration cancellation of tonal disturbance using orthogonal eigenstructure control  

E-Print Network [OSTI]

Orthogonal Eigenstructure Control (OEC) is a novel control method that can be used for active vibration cancellation. OEC is an output feedback control method applicable to multiple-input, multiple-output linear systems. ...

Rastgaar Aagaah, Mohammad

40

Experimental Study of Active Vibration Control of a Cantilever Beam  

Science Journals Connector (OSTI)

The modern technology demands the system to be light and reliable. However, with the conventional vibration control techniques it is difficult to keep the system light with all the damping mechanisms. This work deals with the Active Vibration Control ... Keywords: Active Vibration Control, cantilever, classical controller, piezoelectric transducers

S. M. Khot, Nitesh P. Yelve, Shoaib Shaik

2013-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Drive torque actuation in active surge control of centrifugal compressors  

Science Journals Connector (OSTI)

A novel approach to active surge control is presented for a centrifugal compressor driven by an electrical motor. The main idea of the paper is to use the drive itself for surge control. This eliminates the need for additional actuators, and has the ... Keywords: Active control, Actuators, Centrifugal compressors, Exponentially stable, Lyapunov methods, Nonlinear control

Jan Tommy Gravdahl; Olav Egeland; Svein Ove Vatland

2002-11-01T23:59:59.000Z

42

Guide to good practices for control area activities  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Control Area Activities, Chapter III of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements.'' The practices in this guide should be considered for controlling the activities in control areas. Contractors are advised to adopt methods that meet the intent of DOE Order 5480.19. Control Area Activities'' is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for maintaining a formal environment in operational control areas to promote safe and efficient operations.

Not Available

1993-06-01T23:59:59.000Z

43

Guide to good practices for control area activities  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Control Area Activities, Chapter III of Department of Energy (DOE) Order 5480.19, ``Conduct of Operations Requirements.`` The practices in this guide should be considered for controlling the activities in control areas. Contractors are advised to adopt methods that meet the intent of DOE Order 5480.19. ``Control Area Activities`` is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for maintaining a formal environment in operational control areas to promote safe and efficient operations.

Not Available

1993-06-01T23:59:59.000Z

44

Guide to good practices for control area activities  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Control Area Activities, Chapter III of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities. The practices in this guide should be considered for controlling the activities in control areas. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. Control Area Activities is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for maintaining a formal environment in operational control areas to promote safe and efficient operations.

NONE

1998-12-01T23:59:59.000Z

45

Activities to Secure Control Systems in the Energy Sector  

Broader source: Energy.gov (indexed) [DOE]

sector sector NSTB November 2008 Hank Kenchington - Program Manager Office of Electricity of Delivery and Energy Reliability U.S. Department of Energy Activities to Secure Control Systems in the Energy Sector * 2,000,000 Miles of Oil Pipelines * 1,300,000 Miles of Gas Pipelines * 2,000 Petroleum Terminals * ~1,000,000 Wells * Extensive Ports, Refineries, Transportation, and LNG Facilities * 160,000 Miles of Electrical Transmission lines * ~17,000 Generators; 985,000 Megawatts (net summer capacity) * Over 3,100 Electric Utilities, with 131 million customers Refinery Locations, Crude and Product Pipelines Source: Energy Information Administration, Office of Oil & Gas LNG Import Facilities (Reactivation underway) Legend Interstate Pipelines Intrastate and Other Pipelines

46

Enhancing the Structural Performance with Active and Semi-Active Devices Using Adaptive Control Strategy  

E-Print Network [OSTI]

Changes in the characteristics of the structure, such as damage, have not been considered in most of the active and semi-active control methods that have been used to control and optimize the response of civil engineering structures...

Bitaraf, Maryam

2012-07-16T23:59:59.000Z

47

Introducing Back-up to Active Compressor Surge Control System  

E-Print Network [OSTI]

in a system with increased performance by taking advantage of both systems. Keywords: centrifugal compressorIntroducing Back-up to Active Compressor Surge Control System Nur Uddin Jan Tommy Gravdahl for introducing a back-up system to an active compressor surge control system is presented in this paper. Active

Gravdahl, Jan Tommy

48

Active Fault Segments As Potential Earthquake Sources- Inferences...  

Open Energy Info (EERE)

sources to the north are shallow at 15 km depth compared to 22 km to the south. The loss of magnetism to the north is probably due to increased heat as a result of magmatic...

49

Active Power Control of Wind Power Plants for Grid Integration  

Science Journals Connector (OSTI)

Increasing penetrations of intermittent renewable energy sources, such as wind, on the utility grid have led to ... One approach for improving grid reliability with increasing wind penetrations is to actively con...

Lucy Y. Pao

2014-03-01T23:59:59.000Z

50

Active Vibration Control on A 3-DOF Parallel Platform Based on Kane's Dynamics Method  

E-Print Network [OSTI]

- 2783 - Active Vibration Control on A 3-DOF Parallel Platform Based on Kane's Dynamics Method Yuan be impossible without a careful isolation of the instrument from the vibration sources. To reduce the vibration low remaining vibration level. This paper is concerned with the development of a vibration isolation

Li, Yangmin

51

Drive torque actuation in active surge control of centrifugal compressors  

E-Print Network [OSTI]

an approximation of a real compression system. 1 #12;CompressorShaft Electric drive Active surge control law Shaft (1999b) or Willems and de Jager (1999). In this study, which is on compressors with electrical drives, we propose to use the electrical drive as a means of active surge control, as depicted in Figure 1.

Gravdahl, Jan Tommy

52

VM Leakage & Orphan Control in Open-Source Clouds  

E-Print Network [OSTI]

Institute of Standards and Technology IEEE CloudCom 2011, Athens, Greece Dec. 1, 2011 #12;Presentation NODE CONTROLLER #1 NODE RESOURCES INTRANET INTRANET INTRANET VMs Shown for One Node Only VMs Shown Layer: N/A (5) Internet/Intranet Layer: Web services communications (4) 12/1/2011 IEEE CloudCom 2011 3

53

Controllable adhesion using field-activated fluids  

E-Print Network [OSTI]

We demonstrate that field-responsive magnetorheological fluids can be used for variable-strength controllable adhesion. The adhesive performance is measured experimentally in tensile tests (a.k.a. probe-tack experiments) ...

Ewoldt, Randy H.

54

Current Control of the Isolated Self-Excited Induction Generator using Shunt Active Filter  

Science Journals Connector (OSTI)

The Self Excited Induction Generator (SEIG) is an isolated power source whose terminal voltage and frequency are controlled by the excitation of the capacitance or the load impedance. This paper presents a method for calculating the minimum excitation capacitance using the equivalent circuit approach for analyzing the steady state operation of SEIG. A new strategy based on an active power filter (APF) for controlling the current and power quality of the self excited induction generator (SEIG) is also presented in this paper. The shunt active power filter was implemented using a three phase PWM current controlled voltage source inverter (VSI) and connected to the wind generator and loads in order to compensate the current harmonics and reactive power. The PWM-VSI gate control signals are derived from hysteresis band current controller. The proposed active filter proved to play an important role and give good dynamic response and robust behavior upon changes in load parameters. This investigation demonstrated that power average control strategy can facilitate the improvement of the power quality. The proposed control method extracts fundamental (reference) components of the source current for the shunt active power line conditioners for nonlinear and unbalanced loads. The Power average approach additionally maintains the voltage of the capacitor (of the PWM inverter) nearly constant without any external control circuit. The shunt APF in conjunction with the proposed controller performs perfectly under different steady state and transient conditions. The simulation results with nonlinear loads and unbalanced loads have showed the effectiveness of the proposed scheme for harmonic reduction in Wind based Power Generation.

A.M. Bouzid; M. Benghanem; B. Hamane; A. Belabbes; M. Bouhamida; A. Draou

2012-01-01T23:59:59.000Z

55

Active control of an aeroelastic structure  

E-Print Network [OSTI]

, pitch motion and control surface motion are all variables. Note that the plunging motion does not directly affect the aerodynamics. Dividing Eq. (1) by the mass and defining I ? =r a m ks z ? =w h m k? = w I k =w I' a m (4) yield...~ = 0 (10) The dimensional characteristic equation, derived from Eqs. (6) and (10), is, +"[;", +-. 'i *. + *?i-q(c. c, . i]+ [m mJ [m s1 ? "(r, 'w?' ? qC j+ ', " J+ [w'?(r. 'w, ' ? qC jj where q = pu m STEADY AERODYNAMIC CONTROL...

Block, Jeffry John

2012-06-07T23:59:59.000Z

56

Vermont Air Pollution Control Regulations, Major Stationary Sources and Major Modifications (Vermont)  

Broader source: Energy.gov [DOE]

This section of the air quality standards applies to all major sources and major modifications and outlines the required control technology to achieve the most stringent emission rate. Emission...

57

Sensitivity of controlled-source electromagnetic fields in planarly layered media  

Science Journals Connector (OSTI)

......extensions for more general anisotropic conductivity. Although this...Electric dipole fields over an anisotropic seaoor: theory and application...fields in planarly layered anisotropic media,Geophys. J. Int...geothermal reservoirs, and gas shales using controlled-source......

R. Streich; M. Becken

2011-11-01T23:59:59.000Z

58

Control of hazardous energy sources (lockout/tagout procedures)  

SciTech Connect (OSTI)

The Occupational Safety and Health Administration (OSHA) Standard 29 CFR 1910.147 addresses practices and procedures that are necessary to disable machinery or equipment and to prevent the release of potentially hazardous energy during maintenance operations. The standard contains definitive criteria for establishing an effective program for locking out or tagging out energy isolating devices. The standard contains major training requirements for those authorized to use the energy isolating devices and those that are affected by their use. Periodic inspections are required at least annually to ensure that the energy control procedures continue to be implemented properly.

Seidel, K.G.

1991-01-01T23:59:59.000Z

59

CONTROLS AND DIAGNOSTICS FOR THE HIGH CURRENT ELECTRON BEAM ION SOURCE AT BNL *  

E-Print Network [OSTI]

CONTROLS AND DIAGNOSTICS FOR THE HIGH CURRENT ELECTRON BEAM ION SOURCE AT BNL * E. Beebe, J Test Stand (EBTS), is a full electron beam power, half ion trap length prototype for an Electron Beam Ion Source (EBIS) that could meet requirements for the Relativistic Heavy Ion Collider (RHIC

60

A MID-INFRARED CENSUS OF STAR FORMATION ACTIVITY IN BOLOCAM GALACTIC PLANE SURVEY SOURCES  

SciTech Connect (OSTI)

We present the results of a search for mid-infrared signs of star formation activity in the 1.1 mm sources in the Bolocam Galactic Plane Survey (BGPS). We have correlated the BGPS catalog with available mid-IR Galactic plane catalogs based on the Spitzer Space Telescope GLIMPSE legacy survey and the Midcourse Space Experiment (MSX) Galactic plane survey. We find that 44% (3712 of 8358) of the BGPS sources contain at least one mid-IR source, including 2457 of 5067 (49%) within the area where all surveys overlap (10 deg. < l < 65 deg.). Accounting for chance alignments between the BGPS and mid-IR sources, we conservatively estimate that 20% of the BPGS sources within the area where all surveys overlap show signs of active star formation. We separate the BGPS sources into four groups based on their probability of star formation activity. Extended Green Objects and Red MSX Sources make up the highest probability group, while the lowest probability group is comprised of 'starless' BGPS sources which were not matched to any mid-IR sources. The mean 1.1 mm flux of each group increases with increasing probability of active star formation. We also find that the 'starless' BGPS sources are the most compact, while the sources with the highest probability of star formation activity are on average more extended with large skirts of emission. A subsample of 280 BGPS sources with known distances demonstrates that mass and mean H{sub 2} column density also increase with probability of star formation activity.

Dunham, Miranda K. [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Robitaille, Thomas P.; Evans, Neal J. II [Department of Astronomy, University of Texas at Austin, 1 University Station C1400, Austin, Texas 78712-0259 (United States); Schlingman, Wayne M. [Steward Observatory, University of Arizona, 933 North Cherry Ave., Tucson, AZ 85721 (United States); Cyganowski, Claudia J. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Urquhart, James, E-mail: miranda.dunham@yale.edu [Australia Telescope National Facility, CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710 (Australia)

2011-04-20T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Hanford Tank Waste - Near Source Treatment of Low Activity Waste  

SciTech Connect (OSTI)

Treatment and disposition of Hanford Site waste as currently planned consists of I 00+ waste retrievals, waste delivery through up to 8+ miles of dedicated, in-ground piping, centralized mixing and blending operations- all leading to pre-treatment combination and separation processes followed by vitrification at the Hanford Tank Waste Treatment and Immobilization Plant (WTP). The sequential nature of Tank Farm and WTP operations requires nominally 15-20 years of continuous operations before all waste can be retrieved from many Single Shell Tanks (SSTs). Also, the infrastructure necessary to mobilize and deliver the waste requires significant investment beyond that required for the WTP. Treating waste as closely as possible to individual tanks or groups- as allowed by the waste characteristics- is being investigated to determine the potential to 1) defer, reduce, and/or eliminate infrastructure requirements, and 2) significantly mitigate project risk by reducing the potential and impact of single point failures. The inventory of Hanford waste slated for processing and disposition as LAW is currently managed as high-level waste (HLW), i.e., the separation of fission products and other radionuclides has not commenced. A significant inventory ofthis waste (over 20M gallons) is in the form of precipitated saltcake maintained in single shell tanks, many of which are identified as potential leaking tanks. Retrieval and transport (as a liquid) must be staged within the waste feed delivery capability established by site infrastructure and WTP. Near Source treatment, if employed, would provide for the separation and stabilization processing necessary for waste located in remote farms (wherein most ofthe leaking tanks reside) significantly earlier than currently projected. Near Source treatment is intended to address the currently accepted site risk and also provides means to mitigate future issues likely to be faced over the coming decades. This paper describes the potential near source treatment and waste disposition options as well as the impact these options could have on reducing infrastructure requirements, project cost and mission schedule.

Ramsey, William Gene

2013-08-15T23:59:59.000Z

62

Research Activities Using Indus-1 Synchrotron Radiation Source  

SciTech Connect (OSTI)

Indus-1 is an efficient SR source in the soft x-ray / vacuum ultra violet region of the electromagnetic spectrum. For Indus-1, the higher order energy contamination in soft x-ray region, heat load and radiation safety problems are also significantly low. At present, soft x-ray-VUV reflectivity, angle integrated and angle resolved photo electron spectroscopy (ARPES), photo physics and high resolution vacuum ultra violet spectroscopy, beamlines are operational. The paper presents some of the recent studies carried out using In-dus-1.

Lodha, G. S.; Deb, S. K. [ISU Division, Raja Ramanna Centre for Advanced Technology(RRCAT), Indore 452013 (India)

2010-06-23T23:59:59.000Z

63

T-615: IBM Rational System Architect ActiveBar ActiveX Control Lets Remote  

Broader source: Energy.gov (indexed) [DOE]

5: IBM Rational System Architect ActiveBar ActiveX Control Lets 5: IBM Rational System Architect ActiveBar ActiveX Control Lets Remote Users Execute Arbitrary Code T-615: IBM Rational System Architect ActiveBar ActiveX Control Lets Remote Users Execute Arbitrary Code May 4, 2011 - 7:15am Addthis PROBLEM: A vulnerability was reported in IBM Rational System Architect. A remote user can cause arbitrary code to be executed on the target user's system. PLATFORM: IBM Rational System 11.4 and prior versions ABSTRACT: There is a high risk security vulnerability with the ActiveBar ActiveX controls used by IBM Rational System Architect. reference LINKS: IBM Advisory: 21497689 SecurityTracker Alert ID: 1025464 CVE-2011-1207 Secunia Advisory: SA43399 IMPACT ASSESSMENT: High Discussion: A remote user can create a specially crafted HTML that, when loaded by the

64

Active noise control of supersonic impinging jet using pulsed microjets  

E-Print Network [OSTI]

This thesis concerns an active noise control of supersonic impinging jet flow using unsteady microjet injection. Supersonic impinging jet involves several problems such as lift loss, ground erosion, significant noise ...

Hong, Seung Hyuck

2009-01-01T23:59:59.000Z

65

Controllable adhesion using field-activated fluids Randy H. Ewoldt  

E-Print Network [OSTI]

Controllable adhesion using field-activated fluids Randy H. Ewoldt Institute for Mathematics and its Applications & The Department of Chemical Engineering and Materials Science, UniversityKinley, and A. E. Hosoi Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts

66

Active control system for high speed windmills  

DOE Patents [OSTI]

A pump stroke is matched to the operating speed of a high speed windmill. The windmill drives a hydraulic pump for a control. Changes in speed of a wind driven shaft open supply and exhaust valves to opposite ends of a hydraulic actuator to lengthen and shorten an oscillating arm thereby lengthening and shortening the stroke of an output pump. Diminishing wind to a stall speed causes the valves to operate the hydraulic cylinder to shorten the oscillating arm to zero. A pressure accumulator in the hydraulic system provides the force necessary to supply the hydraulic fluid under pressure to drive the actuator into and out of the zero position in response to the windmill shaft speed approaching and exceeding windmill stall speed. 4 figs.

Avery, D.E.

1988-01-12T23:59:59.000Z

67

Active surge control of centrifugal compressors using drive torque  

E-Print Network [OSTI]

Active surge control of centrifugal compressors using drive torque Jan Tommy Gravdahl , Olav control is presented. A centrifugal compressor driven by an electrical motor is studied, and the drive of centrifugal com- pressors, which occurs when the operating point of the compressor is located to the left

Gravdahl, Jan Tommy

68

EXPERIMENTAL RESULTS ON DUAL-UEGO ACTIVE CATALYST CONTROL  

E-Print Network [OSTI]

EXPERIMENTAL RESULTS ON DUAL-UEGO ACTIVE CATALYST CONTROL Giovanni Fiengo Jessy W. Grizzle ignition engine equipped with a three-way catalyst and pre- and post-catalyst oxygen sensors. The control hydrocarbons. Linear exhaust gas oxygen sensors are used to measure pre- and post-catalyst air-fuel ratio

Grizzle, Jessy W.

69

TECHNICAL PAPER Time dependent simulation of active flying height control  

E-Print Network [OSTI]

) sliders have been recently used to reduce flying height at the head disk interface and obtain more stableTECHNICAL PAPER Time dependent simulation of active flying height control of TFC sliders Pablo- dure is implemented to simulate the flying height response of a typical thermal flying height control

Fainman, Yeshaiahu

70

The fast neutron fluence and the activation detector activity calculations using the effective source method and the adjoint function  

SciTech Connect (OSTI)

This paper describes the application of effective source in forward calculations and the adjoint method to the solution of fast neutron fluence and activation detector activities in the reactor pressure vessel (RPV) and RPV cavity of a VVER-440 reactor. Its objective is the demonstration of both methods on a practical task. The effective source method applies the Boltzmann transport operator to time integrated source data in order to obtain neutron fluence and detector activities. By weighting the source data by time dependent decay of the detector activity, the result of the calculation is the detector activity. Alternatively, if the weighting is uniform with respect to time, the result is the fluence. The approach works because of the inherent linearity of radiation transport in non-multiplying time-invariant media. Integrated in this way, the source data are referred to as the effective source. The effective source in the forward calculations method thereby enables the analyst to replace numerous intensive transport calculations with a single transport calculation in which the time dependence and magnitude of the source are correctly represented. In this work, the effective source method has been expanded slightly in the following way: neutron source data were performed with few group method calculation using the active core calculation code MOBY-DICK. The follow-up neutron transport calculation was performed using the neutron transport code TORT to perform multigroup calculations. For comparison, an alternative method of calculation has been used based upon adjoint functions of the Boltzmann transport equation. Calculation of the three-dimensional (3-D) adjoint function for each required computational outcome has been obtained using the deterministic code TORT and the cross section library BGL440. Adjoint functions appropriate to the required fast neutron flux density and neutron reaction rates have been calculated for several significant points within the RPV and RPV cavity of the VVER-440 reacto rand located axially at the position of maximum power and at the position of the weld. Both of these methods (the effective source and the adjoint function) are briefly described in the present paper. The paper also describes their application to the solution of fast neutron fluence and detectors activities for the VVER-440 reactor. (authors)

Hep, J.; Konecna, A.; Krysl, V.; Smutny, V. [Calculation Dept., Skoda JS plc, Orlik 266, 31606 Plzen (Czech Republic)

2011-07-01T23:59:59.000Z

71

Active airborne contamination control using electrophoresis  

SciTech Connect (OSTI)

In spite of our best efforts, radioactive airborne contamination continues to be a formidable problem at many of the Department of Energy (DOE) weapons complex sites. For workers that must enter areas with high levels of airborne contamination, personnel protective equipment (PPE) can become highly restrictive, greatly diminishing productivity. Rather than require even more restrictive PPE for personnel in some situations, the Rocky Flats Plant (RFP) is actively researching and developing methods to aggressively combat airborne contamination hazards using electrophoretic technology. With appropriate equipment, airborne particulates can be effectively removed and collected for disposal in one simple process. The equipment needed to implement electrophoresis is relatively inexpensive, highly reliable, and very compact. Once airborne contamination levels are reduced, less PPE is required and a significant cost savings may be realized through decreased waste and maximized productivity. Preliminary ``cold,`` or non-radioactive, testing results at the RFP have shown the technology to be effective on a reasonable scale, with several potential benefits and an abundance of applications.

Veatch, B.D.

1994-06-01T23:59:59.000Z

72

Surveillance Guide - OPS 9.3 Control Area Activities  

Broader source: Energy.gov (indexed) [DOE]

CONTROL AREA ACTIVITIES CONTROL AREA ACTIVITIES 1.0 Objective The objective of this surveillance is to verify that standards for the professional conduct of operations personnel are established and followed so that operator performance meets the expectations of DOE and facility management. This surveillance provides a basis for evaluating watchstanding practices of operations personnel in the control area. 2.0 References 2.1 DOE 5480.19, Conduct of Operations Requirements for DOE Facilities 2.2 DOE-STD-1042-93, Guide to Good Practices for Control Area Activities 3.0 Requirements Implemented This surveillance is conducted to implement requirements of the Functions, Responsibilities and Authorities Manual, Section 20, Operations, FRAM #s 4253, 4258, and 4261. These requirements are

73

Improvement of efficiency and temperature control of induction heating vapor source on electron cyclotron resonance ion source  

SciTech Connect (OSTI)

An electron cyclotron resonance ion source (ECRIS) is used to generate multicharged ions for many kinds of the fields. We have developed an evaporator by using induction heating method that can generate pure vapor from solid state materials in ECRIS. We develop the new matching and protecting circuit by which we can precisely control the temperature of the induction heating evaporator. We can control the temperature within {+-}15 deg. C around 1400 deg. C under the operation pressure about 10{sup -4} Pa. We are able to use this evaporator for experiment of synthesizing process to need pure vapor under enough low pressure, e.g., experiment of generation of endohedral Fe-fullerene at the ECRIS.

Takenaka, T.; Kiriyama, R.; Kurisu, Y.; Nozaki, D.; Yano, K.; Sato, F.; Kato, Y.; Iida, T. [Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University 2-1 Yamada-oka, Suita-shi, Osaka 565-0871 (Japan); Muramatsu, M.; Kitagawa, A. [National Institute of Radiological Sciences (NIRS), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555 (Japan); Uchida, T.; Yoshida, Y. [Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe-shi, Saitama 350-8585 (Japan)

2012-02-15T23:59:59.000Z

74

Wind Tunnel and Flight Testing of Active Flow Control on a UAV  

E-Print Network [OSTI]

Active flow control has been extensively explored in wind tunnel studies but successful in-flight implementation of an active flow control technology still remains a challenge. This thesis presents implementation of active flow control technology...

Babbar, Yogesh

2011-08-08T23:59:59.000Z

75

Active Power Controls from Wind Power: Bridging the Gaps  

SciTech Connect (OSTI)

This paper details a comprehensive study undertaken by the National Renewable Energy Laboratory, Electric Power Research Institute, and the University of Colorado to understand how the contribution of wind power providing active power control (APC) can benefit the total power system economics, increase revenue streams, improve the reliability and security of the power system, and provide superior and efficient response while reducing any structural and loading impacts that may reduce the life of the wind turbine or its components. The study includes power system simulations, control simulations, and actual field tests using turbines at NREL's National Wind Technology Center (NWTC). The study focuses on synthetic inertial control, primary frequency control, and automatic generation control, and analyzes timeframes ranging from milliseconds to minutes to the lifetime of wind turbines, locational scope ranging from components of turbines to large wind plants to entire synchronous interconnections, and additional topics ranging from economics to power system engineering to control design.

Ela, E.; Gevorgian, V.; Fleming, P.; Zhang, Y. C.; Singh, M.; Muljadi, E.; Scholbrook, A.; Aho, J.; Buckspan, A.; Pao, L.; Singhvi, V.; Tuohy, A.; Pourbeik, P.; Brooks, D.; Bhatt, N.

2014-01-01T23:59:59.000Z

76

ACTIVE CONTROL TURBOCHARGER FOR AUTOMOTIVE APPLICATION: AN EXPERIMENTAL EVALUATION  

Science Journals Connector (OSTI)

ABSTRACT The current paper presents the results from a comprehensive set of experimental tests on a prototype active control turbocharger. This is a continuing series of test work as part of the development of this new type of turbocharger. Driven by the need to comply to increasingly strict emissions regulations as well as a continuing strive for better overall performance the active control turbocharger is intended to provide an improvement over the current state-of-the-art in turbocharging. In this system, the nozzle is able to alter the throat inlet area of the turbine according to the pressure variation of each engine exhaust gas pulse thus imposing a substantially more active form of control of the conditions at the turbine rotor inlet.

Apostolos Pesiridis; Ricardo Martinez-Botas

2006-01-01T23:59:59.000Z

77

U-148: ActiveScriptRuby GRScript18.dll ActiveX Control Ruby Code...  

Broader source: Energy.gov (indexed) [DOE]

HTML is displayed. Impact: System access from remote Solution: The vendor has issued a patch. Addthis Related Articles U-081: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets...

78

V-099: Honeywell Multiple Products ActiveX Control Remote Code...  

Broader source: Energy.gov (indexed) [DOE]

9: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability V-099: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability February...

79

Control Engineering Practice 12 (2004) 987988 Emerging technologies for active noise and vibration control systems  

E-Print Network [OSTI]

and vibration control systems Noise and vibration are often limiting factors in performance of many industrial be of little use at lower frequencies. Active noise and vibration control (ANVC) systems have emerged as viable-dimensional enclosure. One of the panels of the enclosure is vibrated, hence generating acoustic noise inside

Pota, Himanshu Roy

80

Controls on conifer regeneration in managed riparian forests: effects of seed source, substrate,  

E-Print Network [OSTI]

Controls on conifer regeneration in managed riparian forests: effects of seed source, substrate with a dense shrub layer inhibits succession from hardwoods to shade-tolerant conifers within these forests density and overstory conifer or hardwood cover. Our results suggest that, in managed forests, conifer

Halpern, Charles B.

Note: This page contains sample records for the topic "activity controlled source" 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

Special Section --Marine Controlled-Source Electromagnetic Methods A Bayesian model for gas saturation estimation  

E-Print Network [OSTI]

Special Section -- Marine Controlled-Source Electromagnetic Methods A Bayesian model for gas Vasco1 , Yoram Rubin2 , and Zhangshuan Hou2 ABSTRACT We develop a Bayesian model to jointly invert reservoir model. We consid- er the porosity and fluid saturation of each layer in the reservoir, the bulk

Chen, Jinsong

82

Active disturbance rejection control for the ALSTOM gasifier benchmark problem  

Science Journals Connector (OSTI)

A new control solution based on a unique active disturbance rejection control (ADRC) paradigm is proposed for the ALSTOM gasifier control problem. In the new control method, the disturbances, including unknown dynamics and external disturbances to the system, are treated as an augmented state that is estimated and then eliminated in real-time. A first-order ADRC scheme for the ALSTOM gasifier is designed. The simulation results show that the new control method is superior to the PI solution by Simm and Xue in terms of the integral of the absolute error of gas pressure disturbance tests at 0% load, the no-overshoot peak value of the gas temperature and the short time for the bed mass to return to the set point during a ramping test, and the ability to reject large coal quality disturbances.

Chun-E Huang; Donghai Li; Yali Xue

2013-01-01T23:59:59.000Z

83

U-148: ActiveScriptRuby GRScript18.dll ActiveX Control Ruby Code Execution  

Broader source: Energy.gov (indexed) [DOE]

48: ActiveScriptRuby GRScript18.dll ActiveX Control Ruby Code 48: ActiveScriptRuby GRScript18.dll ActiveX Control Ruby Code Execution Vulnerability U-148: ActiveScriptRuby GRScript18.dll ActiveX Control Ruby Code Execution Vulnerability April 16, 2012 - 7:00am Addthis PROBLEM: A vulnerability has been reported in ActiveScriptRuby, which can be exploited by malicious people to potentially compromise a user's system. PLATFORM: Version(s): 1.2.2.0 and prior ABSTRACT: The vulnerability is caused due to an error in GRScript18.dll and can be exploited to execute arbitrary Ruby commands. reference LINKS: Secunia Advisory 48811 CVE-2012-1241 IMPACT ASSESSMENT: High Discussion: ActiveScriptRuby is a software to implement Ruby into a Windows environment. ActiveScriptRuby contains a vulnerability where an arbitrary Ruby script may be executed on the web browser that can execute ActiveX

84

Active control of thermoacoustic amplification in a thermo-acousto-electric engine  

Science Journals Connector (OSTI)

In this paper a new approach is proposed to control the operation of a thermoacoustic Stirling electricity generator. This control basically consists in adding an additional acoustic source to the device connected through a feedback loop to a reference microphone a phase-shifter and an audio amplifier. Experiments are performed to characterize the impact of the feedback loop (and especially that of the controlled phase-shift) on the overall efficiency of the thermal to electric energy conversion performed by the engine. It is demonstrated that this external forcing of thermoacoustic self-sustained oscillations strongly impacts the performance of the engine and that it is possible under some circumstances to improve the efficiency of the thermo-electric transduction compared to the one reached without active control. Applicability and further directions of investigation are also discussed.

Come Olivier; Guillaume Penelet; Gaelle Poignand; Pierrick Lotton

2014-01-01T23:59:59.000Z

85

A hybrid passive/active system for control of the noise radiated by a small generator  

Science Journals Connector (OSTI)

The aim of this work was the design and implementation of a hybrid passive/active system to control the noise radiated by a small generator. The fundamental frequency of the periodic radiated noise depends on the electrical load plugged into the generator. Passive control is afforded by a rectangular enclosure with dimensions 1000710530?mm3. The wall panels of the enclosure (steel 1.5 mm thick) are lined with a 30?mm layer of sound absorbing material. Special attention is paid to technical aspects such as air refreshing and temperature inside the enclosure. The measured insertion loss is higher than 20 dB above 500 Hz. Low?frequency noise escapes the enclosure via intake and exhaust openings. Active control is applied to the exhaust noise. The reference signal is supplied by an accelerometer over the air filter case of the generator. A high?temperature loudspeaker is used as control source. The error signal is picked up by a cheap electric microphone. Since noise along the exhaust is too loud the microphone sensitivity had to be reduced by taping its diaphragm. A commercial system is used to implement active noise control. [Work supported by CICYT Project AMB97?1175?C03?01.

Maria Cuesta; Pedro Cobo

1999-01-01T23:59:59.000Z

86

Pulsed plasma-Used injection sources for remote plasma activated chemical vapor deposition  

E-Print Network [OSTI]

Pulsed plasma- Used injection sources for remote plasma activated chemical vapor deposition Mark J, Urbana, Illinois 61801 (Received 21 October 1992; accepted for publication 12 January 1993) Remote plasma the substrate is immersed in the plasma. This selectivity can be compromised if the deposition gases, which

Kushner, Mark

87

Green's function approximation from cross-correlation of active sources in the ocean  

E-Print Network [OSTI]

Green's function approximation from cross-correlation of active sources in the ocean Laura A, California 92093 Received 15 January 2009; revised 1 May 2009; accepted 2 May 2009 Green's function, differences between the empirical Green's function estimates and simulated Green's functions, are explained

Gerstoft, Peter

88

Control of plasma uniformity in a capacitive discharge using two very high frequency power sources  

SciTech Connect (OSTI)

Very high frequency (VHF) capacitively coupled plasma (CCP) discharges are being employed for dielectric etching due to VHF's various benefits including low plasma potential, high electron density, and controllable dissociation. If the plasma is generated using multiple VHF sources, one can expect that the interaction between the sources can be important in determining the plasma characteristics. The effects of VHF mixing on plasma characteristics, especially its spatial profile, are investigated using both computational modeling and diagnostic experiments. The two-dimensional plasma model includes the full set of Maxwell equations in their potential formulation. The plasma simulation results show that electron density peaks at the center of the chamber at 180 MHz due to the standing electromagnetic wave. Electrostatic effects at the electrode edges tend to get stronger at lower VHFs such as 60 MHz. When the two rf sources are used simultaneously and power at 60 MHz is gradually increased, the ion flux becomes uniform and then transitions to peak at electrode edge. These results are corroborated by Langmuir probe measurements of ion saturation current. VHF mixing is therefore an effective method for dynamically controlling plasma uniformity. The plasma is stronger and more confined when the 60 MHz source is connected to the smaller bottom electrode compared to the top electrode.

Bera, Kallol; Rauf, Shahid; Ramaswamy, Kartik; Collins, Ken [Applied Materials, Inc., 974 E. Arques Ave., M/S 81517, Sunnyvale, California 94085 (United States)

2009-08-01T23:59:59.000Z

89

Carbon Nanotube Materials for Substrate Enhanced Control of Catalytic Activity  

SciTech Connect (OSTI)

Carbon SWNTs are attractive materials for supporting electrocatalysts. The properties of SWNTs are highly tunable and controlled by the nanotube's circumferential periodicity and their surface chemistry. These unique characteristics suggest that architectures constructed from these types of carbon support materials would exhibit interesting and useful properties. Here, we expect that the structure of the carbon nanotube support will play a major role in stabilizing metal electrocatalysts under extreme operating conditions and suppress both catalyst and support degradation. Furthermore, the chemical modification of the carbon nanotube surfaces can be expected to alter the interface between the catalyst and support, thus, enhancing the activity and utilization of the electrocatalysts. We plan to incorporate discrete reaction sites into the carbon nanotube lattice to create intimate electrical contacts with the catalyst particles to increase the metal catalyst activity and utilization. The work involves materials synthesis, design of electrode architectures on the nanoscale, control of the electronic, ionic, and mass fluxes, and use of advanced optical spectroscopy techniques.

Heben, M.; Dillon, A. C.; Engtrakul, C.; Lee, S.-H.; Kelley, R. D.; Kini, A. M.

2007-05-01T23:59:59.000Z

90

Active source requirements for assay of sludge drums on the BIR WIT system  

SciTech Connect (OSTI)

The design of the active source for active and passive computed tomography (A&PCT) is critical with respect to accuracy and throughput. The A&PCT active source requirements are highly dependent upon the attenuation properties of the waste matrix within the drum. On of the most highly attenuating waste matrices is sludge. This waste stream will consist of solidified aqueous waste consisting of IDC 001 first stage sludge and IDC 007 wet sludge. Also, the stream consists of solidified organic waste known as code IDC 003 organic setups. We have evaluated the sludge drum data that was previously acquired on the WIT system and have determined that the active source activity must be increased to provide reasonable throughput. The sludge drum that is evaluated here is drum CEPRF11. CEPRF11 is a test drum that was part of the Nondestructive Assay system Capability Evaluation Project (CEP) and contained an actual Rocky Flats waste that is categorized as code 003 solidified organic waste. The full drum was evaluated and found to be somewhat homogenous; therefore, a single slice is arbitrarily chosen to represent the entire drum. Slice number 8 is used and is located approximately at the center of the drum. Figure 1 shows the averaged projections for different energies derived from the active sinogram of slice number 8 from the CEPRF11 drum. This is the average of all the projections of slice 8 taken over 180 degrees with an active integration time of 6 seconds. Figure 2 is also a graph showing the average of all the projections for slice 8; however, the active integration time is 30 seconds.

Roberson, G.P.; Camp, D.C.

1998-04-27T23:59:59.000Z

91

Drive actuation in active control of centrifugal compressors Jan Tommy Gravdahl and Olav Egeland  

E-Print Network [OSTI]

Drive actuation in active control of centrifugal compressors Jan Tommy Gravdahl and Olav Egeland-1375 Billingstad NORWAY CompressorShaft Electric drive Active surge control law Shaft speed Compressor performance control Figure 1: Active surge control using drive 1 Introduction Traditionally, centrifugal

Gravdahl, Jan Tommy

92

INTELLIGENT DEVICE FOR CONTROL OF ACTIVE ANKLE-FOOT Institute of Mechanics, Bulgarian Academy of Sciences,  

E-Print Network [OSTI]

INTELLIGENT DEVICE FOR CONTROL OF ACTIVE ANKLE-FOOT ORTHOSIS Veneva I, Institute of Mechanics, data acquisition and control of active ankle-foot orthosis. The system is composed by microcontroller Prosthetics and Orthotics, Active ankle-foot orthoses, Control, Rehabilitation robotics 1. Introduction Active

Mustakerov, Ivan

93

Power control of a wind farm with active stall wind turbines and AC grid connection  

E-Print Network [OSTI]

Power control of a wind farm with active stall wind turbines and AC grid connection Anca D. Hansen1 controller for a wind farm made-up exclusively of active stall wind turbines with AC grid connection wind farm control involves both the control on wind turbine level as well as the central control

94

E-Print Network 3.0 - active flow control Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4 Control of Resonant Flow Inside a Supersonic Cavity Using High Bandwidth Pulsed Micro-actuators Summary: , Tallahassee, FL 32310 Active control of high speed flows has...

95

Independent modal space control and modal filters for active vibration control of rotors  

E-Print Network [OSTI]

, as shown in equation (3. 7): ((t) = At(t) + Z(t) (3. 7) where Z is the modal force vector, and is given by: Z(t) = V BQ(t) = Vr M 'Q(t) (3 g) in which the right hand side of the equation results from the fact that only the lower n rows of the B matrix... gg Alan B. Pal o (Chair of Committee) James S. Noel (Member) Richard . Alexander (Member) Walter L. B ley (Head of Department) August 1992 ABSTRACT Independent Modal Space Control and Modal Filters for Active Vibration Control of Rotors...

Roever, Douglas Michael

2012-06-07T23:59:59.000Z

96

E-Print Network 3.0 - active suspension control Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a controlled-stress rheometer (Rheometric Scientific... COLLOIDAL SUSPENSION Beth L. Armstrong Oak Ridge National ... Source: Oak Ridge National Laboratory Fossil Energy...

97

Active control of underground stresses through rock pressurization  

SciTech Connect (OSTI)

To significantly increase the stability of underground excavations while exploiting the full advantages of confined rock strength, methods must be developed to actively control the distribution of stresses near the excavation. This US Bureau of Mines study examines theoretical and practical aspects of rock pressurization, an active stress control concept that induces compressive stress in the wall rock through repeated hydraulic fracturing with a settable fluid. Numerical analyses performed by incorporating the rock pressurization concept into a variety of boundary-element models indicate that rock pressurization has the potential to improve underground excavation stability in three ways: (1) by relocating stress concentrations away from the weak opening surface to stronger, confined wall rock; (2) by inducing additional stresses in a biaxial stress field to reduce the difference between the principal stress components near the surface of the opening, and (3) by counteracting the tensile stresses induced in the rock around internally loaded openings. Practical aspects of the rock pressurization concept were investigated through a series of hydraulic fracturing experiments. The use of sulfur as a settable fluid for hydraulic fracturing was demonstrated, although problems related to sulfur viscosity suggest that other molten materials, such as wax, may be better suited to practical field application of the rock pressurization concept.

Vandergrift, T.L.

1995-06-01T23:59:59.000Z

98

Three Dimensional Controlled-source Electromagnetic Edge-based Finite Element Modeling of Conductive and Permeable Heterogeneities  

E-Print Network [OSTI]

Presence of cultural refuse has long posed a serious challenge to meaningful geological interpretation of near surface controlledsource electromagnetic data (CSEM). Cultural refuse, such as buried pipes, underground storage tanks, unexploded...

Mukherjee, Souvik

2010-10-12T23:59:59.000Z

99

Discrimination of nuclear explosions against civilian sources based on atmospheric xenon isotopic activity ratios  

SciTech Connect (OSTI)

A global monitoring system for atmospheric xenon radioactivity is being established as part of the International Monitoring System that will be used to verify compliance with the Comprehensive Nuclear-Test-Ban Treaty (CTBT) once the treaty has entered into force. This paper studies isotopic activity ratios to support interpretation of observed atmospheric concentrations of 135Xe, 133mXe, 133Xe and 131mXe. The goal is to distinguish nuclear explosion sources from civilian releases. Simulations of nuclear explosions, empirical data for both test and reactor releases as well as observations by measurement stations of the International Noble Gas Experiment (INGE) are used to provide a proof of concept for the isotopic ratio based method for source discrimination.

Kalinowski, Martin B.; Axelssson, A.; Bean, Marc; Blanchard, X.; Bowyer, Ted W.; Brachet, G.; McIntyre, Justin I.; Peters, Jana; Pistner, Christoph; Raith, Maria; Ringbom, Anders; Saey, P. R.; Schlosser, C.; Stocki, Trevor J.; Taffary, T.; Ungar, R. Kurt

2010-05-01T23:59:59.000Z

100

770 IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, VOL. 42, NO. 3, MAY/JUNE 2006 Constant Boost Control of the Z-Source Inverter to  

E-Print Network [OSTI]

Control of the Z-Source Inverter to Minimize Current Ripple and Voltage Stress Miaosen Shen, Student-control methods for the Z-source inverter, which can obtain maximum voltage gain at any given modulation index--Pulsewidth modulation (PWM), voltage boost, Z-source inverter. I. INTRODUCTION IN A traditional voltage-source inverter

Tolbert, Leon M.

Note: This page contains sample records for the topic "activity controlled source" 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

248 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 17, NO. 1, JANUARY 2002 Modeling, Analysis, and Control of a Current Source  

E-Print Network [OSTI]

--This paper presents a new approach for the dy- namic control of a current source inverter (CSI)-based STATic-commutated inverters to achieve advanced reactive power control have been confirmed by many researchers [1248 IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 17, NO. 1, JANUARY 2002 Modeling, Analysis

Lehn, Peter W.

102

Oceanic Control of Northeast Pacific Hurricane Activity at Interannual Timescales  

SciTech Connect (OSTI)

Despite the strong dependence of the Power Dissipation Index (PDI), which is a measure of the intensity of Tropical Cyclone (TC) activity, on tropical sea-surface temperatures (SSTs), the variations in PDI are not completely explained by SST. Here we show, using an analysis of a string of observational data sets, that the variability of the thermocline depth (TD) in the east Pacific exerts a significant degree of control on the variability of PDI in that region. On average, a deep thermocline with a larger reservoir of heat favors TC intensification by reducing SST cooling while a shallow thermocline with a smaller heat reservoir promotes enhanced SST cooling that contributes to TC decay. At interannual time scales, the variability of basin-mean TD accounts for nearly 30% of the variability in the PDI during the TC season. Also, about 20% of the interannual variability in the east Pacific basin-mean TD is due to the El Nio and the Southern Oscillation (ENSO), a dominant climate signal in this region. This study suggests that a better understanding of the factors governing the interannual variability of the TD conditions in the east Pacific and how they may change over time, may lead to an improved projection of future east Pacific TC activity.

Balaguru, Karthik; Leung, Lai-Yung R.; Yoon, Jin-Ho

2013-10-16T23:59:59.000Z

103

Combining Droop Curve Concepts with Control Systems for Wind Turbine Active Power Control: Preprint  

SciTech Connect (OSTI)

Wind energy is becoming a larger portion of the global energy portfolio and wind penetration has increased dramatically in certain regions of the world. This increasing wind penetration has driven the need for wind turbines to provide active power control (APC) services to the local utility grid, as wind turbines do not intrinsically provide frequency regulation services that are common with traditional generators. It is common for large scale wind turbines to be decoupled from the utility grid via power electronics, which allows the turbine to synthesize APC commands via control of the generator torque and blade pitch commands. Consequently, the APC services provided by a wind turbine can be more flexible than those provided by conventional generators. This paper focuses on the development and implementation of both static and dynamic droop curves to measure grid frequency and output delta power reference signals to a novel power set point tracking control system. The combined droop curve and power tracking controller is simulated and comparisons are made between simulations using various droop curve parameters and stochastic wind conditions. The tradeoffs involved with aggressive response to frequency events are analyzed. At the turbine level, simulations are performed to analyze induced structural loads. At the grid level, simulations test a wind plant's response to a dip in grid frequency.

Buckspan, A.; Aho, J.; Pao, L.; Fleming, P.; Jeong, Y.

2012-06-01T23:59:59.000Z

104

Control of Ribosome Synthesis in Escherichia coli: Analysis of an Energy Source Shift-Down  

Science Journals Connector (OSTI)

...as the sole carbon and energy source. The new growth rate was determined...completely different carbon and energy sources when identical...Escherichia coli: analysis ofan energy source shift-down...A. Benjamin Inc., New York. 25. von Meyenburg...

Sren Molin; Kaspar Von Meyenburg; Ole Maale; Mogens T. Hansen; Martin L. Pato

1977-07-01T23:59:59.000Z

105

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 53, NO. 2, APRIL 2006 477 Voltage-Source Active Power Filter Based on  

E-Print Network [OSTI]

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 53, NO. 2, APRIL 2006 477 Voltage-Source Active compensate load current harmonics, keeping better-quality sinusoidal currents from the source. The simulated MODERN power electronics have contributed a great deal to the development of new powerful applications

Catholic University of Chile (Universidad Católica de Chile)

106

Realtime controller tuning for periodic disturbance rejection with application to active noise control  

E-Print Network [OSTI]

de Callafon. Scheduling control for periodic disturbance at-de Callafon, Scheduling Control for Periodic DisturbanceR.A. de Callafon, Scheduling Control for Periodic Distur-

Kinney, Charles E.

2009-01-01T23:59:59.000Z

107

Active and reactive power ripple minimization in direct power control of matrix converter-fed DFIG  

Science Journals Connector (OSTI)

Abstract Despite the advantages of matrix converters (MCs) compared with standard voltage source converters (VSCs), all of the direct power control (DPC) strategies for doubly fed induction generator (DFIG) reported in the literature, only utilize VSCs. In this paper, the influence of MC voltage vectors on active and reactive powers variation is investigated. Compared with VSCs, \\{MCs\\} generate higher number of voltage vectors. Using this inherent advantage of MC, the main contribution of this paper is to reduce large active and reactive power ripples which is one of the main drawbacks of conventional DPC method. Utilizing a wide range of voltage vectors with different amplitudes, a new switching table is derived which using this table, not only large power ripple is compensated but also, a close to unity input power factor for MC can be achieved. In the other word, the presented scheme adds the advantages of MC and DPC together. Moreover, Owing to the operation of MC in direct acac form, the presented scheme effectively eliminates the need for the grid side converter used in conventional DPC, which has a complicated control method is eliminated. Simulation results show the effectiveness of the proposed method and have a reasonable correspondence with theoretical and mathematical analysis.

Arjang Yousefi-Talouki; Edris Pouresmaeil; Bo Nrregaard Jrgensen

2014-01-01T23:59:59.000Z

108

Active Diesel Emission Control Technology for Transport Refrigeration Units  

Broader source: Energy.gov [DOE]

This project discusses a CARB Level 2+ verified active regeneration technology for smal diesel engines

109

Integrated vehicle dynamics control via coordination of active front steering and rear braking  

E-Print Network [OSTI]

front steering and rear braking in a driver- assist system for vehicle yaw control. The proposed control system aims at stabilizing the vehicle while achieving a desired yaw rate. During normal driving braking could be used for yaw rate control. An active suspension system, by controlling the wheel load

Paris-Sud XI, Université de

110

U-154: IBM Rational ClearQuest ActiveX Control Buffer Overflow...  

Broader source: Energy.gov (indexed) [DOE]

Architect ActiveBar ActiveX Control Lets Remote Users Execute Arbitrary Code V-020: Apple QuickTime Multiple Flaws Let Remote Users Execute Arbitrary Code U-126: Cisco Adaptive...

111

Method and apparatus for actively controlling a micro-scale flexural plate wave device  

DOE Patents [OSTI]

An actively controlled flexural plate wave device provides a micro-scale pump. A method of actively controlling a flexural plate wave device produces traveling waves in the device by coordinating the interaction of a magnetic field with actively controlled currents. An actively-controlled flexural plate wave device can be placed in a fluid channel and adapted for use as a micro-scale fluid pump to cool or drive micro-scale systems, for example, micro-chips, micro-electrical-mechanical devices, micro-fluid circuits, or micro-scale chemical analysis devices.

Dohner, Jeffrey L. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

112

E-Print Network 3.0 - active mode control Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: simple features have few features active Jan Bredereke: On Preventing FIs which are Shared-Control Mode... On Preventing Telephony Feature Interactions which are...

113

Lesson Learned by Lawrence Livermore National Laboratory Activity-level Work Planning and Control  

Broader source: Energy.gov [DOE]

Slide Presentation by Donna J. Governor, Lawrence Livermore National Laboratory. Lessons Learned by Lawrence Livermore National Laboratory Activity-Level Work Planning & Control.

114

Wind Turbine Blade Flow Fields and Prospects for Active Aerodynamic Control: Preprint  

SciTech Connect (OSTI)

This paper describes wind turbine flow fields that can cause adverse aerodynamic loading and can impact active aerodynamic control methodologies currently contemplated for wind turbine applications.

Schreck, S.; Robinson, M.

2007-08-01T23:59:59.000Z

115

Ultrafast monoenergetic electron source by optical waveform control of surface plasmons  

Science Journals Connector (OSTI)

We propose coherent control of photoelectron acceleration at metal surfaces mediated by surface plasmon polaritons. A high degree of spectral and spatial control of the emission...

Dombi, Peter; Rcz, Peter

2008-01-01T23:59:59.000Z

116

A Summary of Control System Security Standards Activities in...  

Broader source: Energy.gov (indexed) [DOE]

sector standards, guidelines, and technical reports, demonstrating standards coverage by security topic. This work focuses on control systems standards applicable to the energy...

117

E-Print Network 3.0 - adaptive control theory Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

there has been a tremendous amount of activities in neural control and adaptive fuzzy control approaches 1... -4. These methods include intelligent control, ... Source:...

118

E-Print Network 3.0 - adaptive control scheme Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

there has been a tremendous amount of activities in neural control and adaptive fuzzy control approaches 1... -4. These methods include intelligent control, ... Source:...

119

Active Fault Controls At High-Temperature Geothermal Sites- Prospectin...  

Open Energy Info (EERE)

the level of unrecognized active faults present in these areas. Analysis of low-sun-angle aerial photography acquired over the Needle Rocks, Astor Pass, Empire, and Lee...

120

Excitation and Active Control of Propagating Surface Plasmon Polaritons in Graphene  

E-Print Network [OSTI]

Excitation and Active Control of Propagating Surface Plasmon Polaritons in Graphene Weilu Gao, Gang polaritons propagating through monolayer graphene using a silicon diffractive grating. The normal and actively control plasmonic waves in graphene and is thus an important building block of graphene plasmonic

Kono, Junichiro

Note: This page contains sample records for the topic "activity controlled source" 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

ADAPTIVE CONTROL SYSTEM FOR ACTIVE ANKLE-FOOT ORTHOSIS FOR ANKLE ASSISTING AND REHABILITATION  

E-Print Network [OSTI]

ADAPTIVE CONTROL SYSTEM FOR ACTIVE ANKLE-FOOT ORTHOSIS FOR ANKLE ASSISTING AND REHABILITATION ADAPTIVE CONTROL SYSTEM FOR ACTIVE ANKLE-FOOT ORTHOSIS FOR ANKLE ASSISTING AND REHABILITATION Ivanka Veneva]. The sensor system has mounted into two basic components: insole for the healthy leg and ankle- foot orthoses

Mustakerov, Ivan

122

CONTROL SYSTEM FOR ACTIVE ANKLE-FOOT ORTHOSIS AND GAIT ANALYSIS  

E-Print Network [OSTI]

CONTROL SYSTEM FOR ACTIVE ANKLE-FOOT ORTHOSIS AND GAIT ANALYSIS CONTROL SYSTEM FOR ACTIVE ANKLE system has mounted into two basic components: insole for the healthy leg and ankle-foot orthoses. Proposed ankle-foot orthosis is with one degree of freedom which foot segment is connected to the shank

Mustakerov, Ivan

123

Journal of Sound and Vibration (1997) 202(2), 203218 SEMI-ACTIVE CONTROL OF FRICTION  

E-Print Network [OSTI]

Journal of Sound and Vibration (1997) 202(2), 203­218 SEMI-ACTIVE CONTROL OF FRICTION DAMPERS P, U.S.A. (Received 22 January 1996, and in final form 21 October 1996) Semi-active control of friction dampers has been proposed to improve the energy dissipation characteristics of passive friction dampers

Dupont, Pierre

124

Contribution of simulation in the product-driven systems production activity control  

E-Print Network [OSTI]

Contribution of simulation in the product-driven systems production activity control Olivier CARDIN many benefits on numerous elements of the Supply Chain. Indeed, product driven systems enable a great to have a global vision, generally necessary for the system's production activity control. We suggest

Paris-Sud XI, Université de

125

Hybrid Resource Control of Active Extensions Parveen Patel Jay Lepreau  

E-Print Network [OSTI]

,lepreau}@cs.utah.edu http://www.cs.utah.edu/flux/ Abstract--- The ability of active networks technology to allow customized. RBClick uses a modified version of Cyclone, a type­safe version of C, to allow users to download new. INTRODUCTION Active network technology allows users of a network to customize the computation performed

Utah, University of

126

Hybrid Resource Control of Active Extensions Parveen Patel Jay Lepreau  

E-Print Network [OSTI]

,lepreau}@cs.utah.edu http://www.cs.utah.edu/flux/ Abstract-- The ability of active networks technology to allow customized. RBClick uses a modified version of Cyclone, a type-safe version of C, to allow users to download new. INTRODUCTION Active network technology allows users of a network to customize the computation performed

Utah, University of

127

A Summary of Control System Security Standards Activities in the Energy  

Broader source: Energy.gov (indexed) [DOE]

A Summary of Control System Security Standards Activities in the A Summary of Control System Security Standards Activities in the Energy Sector (October 2005) A Summary of Control System Security Standards Activities in the Energy Sector (October 2005) This document is a compilation of the activities and initiatives concerning control system security that are influencing the standards process in the development of secure communication protocols and systems. Also contained in this report is a comparison of several of the sector standards, guidelines, and technical reports, demonstrating standards coverage by security topic. This work focuses on control systems standards applicable to the energy (oil, gas, and electric, but not nuclear) sector. Summary of CS Standards Activities in the Energy Sector.pdf More Documents & Publications

128

U-108: Net4Switch ipswcom ActiveX Control Buffer Overflow Vulnerability |  

Broader source: Energy.gov (indexed) [DOE]

8: Net4Switch ipswcom ActiveX Control Buffer Overflow 8: Net4Switch ipswcom ActiveX Control Buffer Overflow Vulnerability U-108: Net4Switch ipswcom ActiveX Control Buffer Overflow Vulnerability February 22, 2012 - 8:00am Addthis PROBLEM: A vulnerability was reported in Net4Switch ipswcom ActiveX Control, which can be exploited by malicious people to compromise a user's system. PLATFORM: Net4Switch ipswcom ActiveX Control 1.x ABSTRACT: The vulnerability is caused due to a boundary error within the "CxDbgPrint()" function (cxcmrt.dll) when creating a debug message string. reference LINKS: Vendor Advisory Secunia Advisroy 48125 No CVE references. IMPACT ASSESSMENT: High Discussion: The vulnerability is caused due to a boundary error within the "CxDbgPrint()" function (cxcmrt.dll) when creating a debug message string.

129

Memorandum, NNSA Activity Level Work Planning & Control Processes...  

Broader source: Energy.gov (indexed) [DOE]

Level Work Planning & Control Processes, January 2006 More Documents & Publications DOE-HDBK-1211-2014 Order Module--DOE G 450.4-1B, INTEGRATED SAFETY MANAGEMENT SYSTEM GUIDE CRAD,...

130

Active control of tip clearance flow in axial compressors  

E-Print Network [OSTI]

Control of compressor tip clearance flows is explored in a linear cascade using three types of fluidic actuators; Normal Synthetic Jet (NSJ; unsteady jet normal to the mean flow with zero net mass flux), Directed Synthetic ...

Bae, Jinwoo W

2001-01-01T23:59:59.000Z

131

Active Flow Control on Bidirectional Rotors for Tidal MHK Applications  

SciTech Connect (OSTI)

A marine and hydrokinetic (MHK) tidal turbine extracts energy from tidal currents, providing clean, sustainable electricity generation. In general, all MHK conversion technologies are confronted with significant operational hurdles, resulting in both increased capital and operations and maintenance (O&M) costs. To counter these high costs while maintaining reliability, MHK turbine designs can be simplified. Prior study found that a tidal turbine could be cost-effectively simplified by removing blade pitch and rotor/nacelle yaw. Its rotor would run in one direction during ebb and then reverse direction when the current switched to flood. We dubbed such a turbine a bidirectional rotor tidal turbine (BRTT). The bidirectional hydrofoils of a BRTT are less efficient than conventional hydrofoils and capture less energy, but the elimination of the pitch and yaw systems were estimated to reduce levelized cost of energy by 7.8%-9.6%. In this study, we investigated two mechanisms for recapturing some of the performance shortfall of the BRTT. First, we developed a novel set of hydrofoils, designated the yy series, for BRTT application. Second, we investigated the use of active flow control via microtabs. Microtabs are small deployable/retractable tabs, typically located near the leading or trailing edge of an air/hydrofoil with height on the order of the boundary layer thickness (1% - 2% of chord). They deploy approximately perpendicularly to the foil surface and, like gurney flaps and plain flaps, globally affect the aerodynamics of the airfoil. By strategically placing microtabs and selectively deploying them based on the direction of the inflow, performance of a BRTT rotor can be improved while retaining bidirectional operation. The yy foils were computationally designed and analyzed. They exhibited better performance than the baseline bidirectional foil, the ellipse. For example, the yyb07cn-180 had 14.7% higher (l/d)max than an ellipse of equal thickness. The yyb07cn family also had higher c{sub p,min} than equivalently thick ellipses, indicating less susceptibility to cavitation. Microtabs applied on yy foils demonstrated improved energy capture. A series of variable speed and constant speed rotors were developed with the yyb07cn family of hydrofoils. The constant speed yyb07cn rotor (yy-B02-Rcs,opt) captured 0.45% more energy than the equivalent rotor with ellipses (e-B02-Rcs,opt). With microtabs deployed (yy?t-B02-Rcs,opt), the energy capture increase over the rotor with ellipses was 1.05%. Note, however, that microtabs must be applied judiciously to bidirectional foils. On the 18% thick ellipse, performance decreased with the addition of microtabs. Details of hydrofoil performance, microtab sizing and positioning, rotor configurations, and revenue impacts are presented herein.

Shiu, Henry [Research Engineer; van Dam, Cornelis P. [Professor

2013-08-22T23:59:59.000Z

132

An active vibration absorber of smart panel by using a decomposed parallel fuzzy control structure  

Science Journals Connector (OSTI)

This study proposes novel development of piezoelectric actuators as elements of smart structures. The primary goal of this work is to control actively the vibrations of smart structures by using a decomposed parallel fuzzy control approach. This study ... Keywords: Decomposed parallel control structure, Piezoelectric, Smart structures

J. Lin

2005-12-01T23:59:59.000Z

133

Dual-UEGO Active Catalyst Control for Emissions Reduction: Design and Experimental Validation  

E-Print Network [OSTI]

Dual-UEGO Active Catalyst Control for Emissions Reduction: Design and Experimental Validation three-way catalysts and two oxygen sensors. The control objective is to maximize the simultaneous are used to measure air-fuel ratio upstream and downstream of each catalyst. A series controller

Grizzle, Jessy W.

134

Active vibration suppression of a exible structure using smart material and a modular control patch  

E-Print Network [OSTI]

Active vibration suppression of a ¯exible structure using smart material and a modular control of vibration suppression of a ¯exible structure using smart materials and a miniaturized digital controller and was developed by TRW for the United States Air Force for future space vibration control. In this research

135

Experimental Study of Active Vibration Suppression Structure Using Modular Control Patch*  

E-Print Network [OSTI]

Experimental Study of Active Vibration Suppression Structure Using Modular Control Patch* Gangbing results of vibration suppressicln of a flexible structure using a miniaturized digital controller, called for the United States Air Force for future space vibration control. In this research, the MCP is used

136

Active Control Strategies for Chemical Sensors and Sensor Arrays  

E-Print Network [OSTI]

validated on metal-oxide (MOX) sensors. Our results show that the active sensing method obtains better classification performance than passive sensing methods, and also is more robust to additive Gaussian noise in sensor measurements. Second, we consider...

Gosangi, Rakesh

2013-07-17T23:59:59.000Z

137

Status Update on Action 2a: Implementation Handbook for Activity-level Work Planning and Control  

Broader source: Energy.gov [DOE]

Slide Presentation by James Winter, NA-00-10. DOE Handbook: Implementing Activity-Level Work Planning & Control at Nuclear Facilities. Project Justification Statement submitted 1-29-13, with focus upon improved implementation of WP&C and activity-level work. Provides the background, project plan, and key elements of a new DOE handbook on implementing activity-level work planning and control at DOE nuclear facilities.

138

Active Wake Redirection Control to Improve Energy Yield (Poster)  

SciTech Connect (OSTI)

Wake effects can dramatically reduce the efficiency of waked turbines relative to the unwaked turbines. Wakes can be deflected, or 'redirected,' by applying yaw misalignment to the turbines. Yaw misalignment causes part of the rotor thrust vector to be pointed in the cross-stream direction, deflecting the flow and the wake. Yaw misalignment reduces power production, but the global increase in wind plant power due to decreased wake effect creates a net increase in power production. It is also a fairly simple control idea to implement at existing or new wind plants. We performed high-fidelity computational fluid dynamics simulations of the wake flow of the proposed Fishermen's Atlantic City Windfarm (FACW) that predict that under certain waking conditions, wake redirection can increase plant efficiency by 10%. This means that by applying wake redirection control, for a given watersheet area, a wind plant can either produce more power, or the same amount of power can be produced with a smaller watersheet area. With the power increase may come increased loads, though, due to the yaw misalignment. If misalignment is applied properly, or if layered with individual blade pitch control, though, the load increase can be mitigated. In this talk we will discuss the concept of wake redirection through yaw misalignment and present our CFD results of the FACW project. We will also discuss the implications of wake redirection control on annual energy production, and finally we will discuss plans to implement wake redirection control at FACW when it is operational.

Churchfield, M. J.; Fleming, P.; DeGeorge, E.; Bulder, B; White, S. M.

2014-10-01T23:59:59.000Z

139

E-Print Network 3.0 - activity radioactive sources Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sealed ... Source: Lawrence Berkeley National Laboratory, High Redshift Supernova Search Collection: Physics 3 Radioactive Waste Guidance PAGE * MERGEFORMAT June 10, 2011...

140

Real-Time Implementation Control for Multi-source Energy System  

Science Journals Connector (OSTI)

This paper describes the first stage of an on going project dealing with the multi-source energy management Strategy. In this work, a combined system producing electrical energy from Photovoltaic (PV) energy, wind

Adil Mehdary; Aziz Naamane; Nacer Msirdi

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Light source and CO2 concentration affect growth and anthocyanin content of lettuce under controlled environment  

Science Journals Connector (OSTI)

The effect of light source and CO2 concentration on the growth and anthocyanin content of lettuce (Lactuca sativa L. Seonhong Jeokchukmyeon) grown in growth chambers was examined. The plant was grown under 140 ...

Yoo Gyeong Park; Ji Eun Park

2012-12-01T23:59:59.000Z

142

Active Power Controls from Wind Power: Bridging the Gaps  

Broader source: Energy.gov [DOE]

This report evaluates how wind power can support power system reliability, and do so economically. The study includes a number of different power system simulations, control simulations, and actual field tests using turbines at the National Renewable Energy Laboratory's (NRELs) National Wind Technology Center (NWTC).

143

The Biopsychology-Toolbox: A free, open-source Matlab-toolbox for the control of behavioral experiments  

Science Journals Connector (OSTI)

The Biopsychology-Toolbox is a free, open-source Matlab-toolbox for the control of behavioral experiments. The major aim of the project was to provide a set of basic tools that allow programming novices to control basic hardware used for behavioral experimentation without limiting the power and flexibility of the underlying programming language. The modular design of the toolbox allows portation of parts as well as entire paradigms between different types of hardware. In addition to the toolbox, this project offers a platform for the exchange of functions, hardware solutions and complete behavioral paradigms.

Jonas Rose; Tobias Otto; Lars Dittrich

2008-01-01T23:59:59.000Z

144

Activated carbon injection - a mercury control success story  

SciTech Connect (OSTI)

Almost 100 full-scale activated carbon injection (ACI) systems have been ordered by US electric utilities. These systems have the potential to remove over 90% of the mercury in flue, at a cost below $10,000 per pound of mercury removal. Field trials of ACI systems arm outlined. 1 fig.

NONE

2008-07-01T23:59:59.000Z

145

A Novel Current Angle Control Scheme in a Current Source Inverter Fed Permanent Magnet Synchronous Motor Drive for Automotive Applications  

SciTech Connect (OSTI)

This paper describes a novel speed control scheme to operate a current source inverter (CSI) driven surface-mounted permanent magnet synchronous machine (SPMSM) for hybrid electric vehicles (HEVs) applications. The idea is to use the angle of the current vector to regulate the rotor speed while keeping the two dc-dc converter power switches on all the time to boost system efficiency. The effectiveness of the proposed scheme was verified with a 3 kW CSI-SPMSM drive prototype.

Tang, Lixin [ORNL] [ORNL; Su, Gui-Jia [ORNL] [ORNL

2011-01-01T23:59:59.000Z

146

E-Print Network 3.0 - aureus source control Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Response Summary: are critical to control S. aureus in vivo, as evidenced by the elevated rate of S. aureus infection in patients... the immunological mediators required for S....

147

Field Emission from Carbon Films Deposited by Controlled-Low-Energy Beams and CVD Sources  

SciTech Connect (OSTI)

The principal interests in this work are energetic-beam control of carbon-film properties and the roles of doping and surface morphology in field emission.

Lowndes, D.H.; Merkulov, V.I.; Baylor, L.R.; Jellison, Jr., G.E.; Poker, D.B.; Kim, S.; Sohn, M.H.; Paik, N.W.

1999-11-29T23:59:59.000Z

148

Active control of underwater propulsor using shape memory alloys  

E-Print Network [OSTI]

of submarines10 as control surface deflection tabs and linear actuators in biomimetic hydrofoils11-12. The material chosen in many of these studies and research applications is the Shape Memory Alloy (SMA). This material is attractive due to its small size... section. The water tunnel is powered by a Baldor 25-hp electric motor and with the cross-section specified above allows for a maximum velocity of approximately 1 m/s. To be ab le to obtain reliable data from the test run of the 2-D hydrofoil...

Wasylyszyn, Jonathan Allen

2007-04-25T23:59:59.000Z

149

V-099: Honeywell Multiple Products ActiveX Control Remote Code Execution  

Broader source: Energy.gov (indexed) [DOE]

099: Honeywell Multiple Products ActiveX Control Remote Code 099: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability V-099: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability February 26, 2013 - 12:26am Addthis PROBLEM: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability PLATFORM: Honeywell ComfortPoint Open Manager (CPO-M) Honeywell Enterprise Buildings Integrator (EBI) Honeywell SymmetrE ABSTRACT: A vulnerability has been reported in multiple Honeywell products REFERENCE LINKS: Secunia Advisory SA52389 ICSA-13-053-02 CVE-2013-0108 IMPACT ASSESSMENT: Medium DISCUSSION: The vulnerability is caused due to an unspecified error in the HscRemoteDeploy.dll module. No further information is currently available. Successful exploitation may allow execution of arbitrary code.

150

V-086: IntegraXor ActiveX Control Buffer Overflow Vulnerability |  

Broader source: Energy.gov (indexed) [DOE]

6: IntegraXor ActiveX Control Buffer Overflow Vulnerability 6: IntegraXor ActiveX Control Buffer Overflow Vulnerability V-086: IntegraXor ActiveX Control Buffer Overflow Vulnerability February 7, 2013 - 6:00am Addthis PROBLEM: A vulnerability has been reported in IntegraXor PLATFORM: Integraxor Versions prior to 4.x ABSTRACT: The vulnerability is caused due to an error in the PE3DO32A.ocx ActiveX control and can be exploited to cause a buffer overflow. REFERENCE LINKS: Secunia Advisory SA52073 CVE-2012-4700 US-CERT Advisory IMPACT ASSESSMENT: High DISCUSSION: Successfully exploiting this vulnerability could lead to a DoS for the application or could allow an attacker to execute arbitrary code. IMPACT: Successful exploitation may allow execution of arbitrary code. SOLUTION: Update to version 4.00 build 4280.0 Addthis Related Articles

151

V-099: Honeywell Multiple Products ActiveX Control Remote Code Execution  

Broader source: Energy.gov (indexed) [DOE]

9: Honeywell Multiple Products ActiveX Control Remote Code 9: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability V-099: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability February 26, 2013 - 12:26am Addthis PROBLEM: Honeywell Multiple Products ActiveX Control Remote Code Execution Vulnerability PLATFORM: Honeywell ComfortPoint Open Manager (CPO-M) Honeywell Enterprise Buildings Integrator (EBI) Honeywell SymmetrE ABSTRACT: A vulnerability has been reported in multiple Honeywell products REFERENCE LINKS: Secunia Advisory SA52389 ICSA-13-053-02 CVE-2013-0108 IMPACT ASSESSMENT: Medium DISCUSSION: The vulnerability is caused due to an unspecified error in the HscRemoteDeploy.dll module. No further information is currently available. Successful exploitation may allow execution of arbitrary code.

152

U-018: Oracle AutoVue ActiveX Control Insecure Method Vulnerabilities |  

Broader source: Energy.gov (indexed) [DOE]

18: Oracle AutoVue ActiveX Control Insecure Method 18: Oracle AutoVue ActiveX Control Insecure Method Vulnerabilities U-018: Oracle AutoVue ActiveX Control Insecure Method Vulnerabilities October 25, 2011 - 8:45am Addthis PROBLEM: Oracle AutoVue ActiveX Control Insecure Method Vulnerabilities. PLATFORM: The vulnerabilities are confirmed in version 20.0.2 build 7910 (AutoVueX.ocx 20.1.1.7910). Other versions may also be affected. ABSTRACT: Successful exploitation of the vulnerabilities allows execution of arbitrary code. reference LINKS: Bugtraq ID: 50321 Secunia Advisory SA46473 Oracle AutoVue IMPACT ASSESSMENT: High Discussion: Successfully exploiting this issue will allow attackers to create or overwrite arbitrary files on the victim's computer within the context of the affected application (typically Internet Explorer) that uses the

153

American Institute of Aeronautics and Astronautics SIMULATION OF PILOT CONTROL ACTIVITY DURING  

E-Print Network [OSTI]

restrictive, because certain wind conditions never present themselves during tests. Better simulation tools1 American Institute of Aeronautics and Astronautics SIMULATION OF PILOT CONTROL ACTIVITY DURING of Aerospace Engineering The Pennsylvania State University University Park, PA 16802 Abstract A simulation

154

Synthesis of Optimal Control of a Pendulum When Active Disturbances are Present  

E-Print Network [OSTI]

Synthesis of Optimal Control of a Pendulum When Active Disturbances are Present B.N.Sokolov, V the game. A combination of numerical and analytic approaches made it possible to construct a synthesis

Turova, Varvara

155

Active-head sliders using piezoelectric thin films for flying height control  

Science Journals Connector (OSTI)

This paper describes design and fabrication of a MEMS-based active-head slider using a PZT thin film for flying height control in hard disk drives. A piezoelectric cantilever integrated in the ... air bearing sli...

Kenji Suzuki; Takayuki Akimatsu; Kenji Sasaki; Masayuki Kurita

2005-08-01T23:59:59.000Z

156

E-Print Network 3.0 - active vibration control Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

procedures were programmed in the control system of the vibrator... ,22,25) the transmissibility of vibration is affected by body posture,(17-19,21,25) muscle activity,(26,27)...

157

Hybrid integrated active antennas, voltage-controlled oscillators and switchable & tunable CPW-slotline filters  

E-Print Network [OSTI]

HYBRID INTEGRATED ACTIVE ANTENNAS, VOLTAGE-CONTROLLED OSCILLATORS AND SWITCHABLE & TUNABLE CPW-SLOTLINE FILTERS A Thesis by JULIO ANGEL NAVARRO Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1990 Major Subject: Electrical Engineering HYBRID INTEGRATED ACTIVE ANTENNAS, VOLTAGE-CONTROLLED OSCILLATORS AND SWITCHABLE 2 TUNABLE CPW-SLOTLINE FILTERS A Thesis by JULIO ANGEL NAVARRO...

Navarro, Julio A

1990-01-01T23:59:59.000Z

158

Model-based Controllers for Active Control and Real-time Tests with  

E-Print Network [OSTI]

N. Equipped with 3000rpm 400V permanent magnet motors, with a maximum torque of about 4Nm. powered by four for bidirectional coupling (Displ. control) (Wallace et al., 2005) NS Use ground input and force fedback from the PS

159

Active coupling control in densely packed subwavelength waveguides via dark mode  

E-Print Network [OSTI]

The ever growing need for energy-efficient and fast communications is driving the development of highly integrated photonic circuits where controlling light at the nanoscale becomes the most critical aspect of information transfer . Directional couplers, two interacting optical waveguides placed in close proximity, are important building blocks in these integrated photonics circuits and have been employed as optical modulators and switches for high speed communication, data processing and integrated quantum operations. However, active control over the coupling between closely packed waveguides is highly desirable and yet remains a critical barrier towards ultra small footprint devices. A general approach to achieve active control in waveguide systems is to exploit optical nonlinearities enabled by a strong control pulse. However these devices suffer from the nonlinear absorption induced by the intense control pulse as the signal and its control propagate in the same waveguide. Here we experimentally demonstra...

Suchowski, Haim; Hatakeyama, Taiki; Wu, Chihhui; Feng, Liang; OBrien, Kevin; Wang, Yuan; Zhang, Xiang

2015-01-01T23:59:59.000Z

160

Predictive control of a real-world Diesel engine using an extended online active set strategy  

Science Journals Connector (OSTI)

In order to meet tight emission limits Diesel engines are nowadays equipped with additional hardware components like an exhaust gas recirculation valve and a variable geometry turbocharger. Conventional engine control units use two SISO control loops to regulate the exhaust gas recirculation valve and the variable geometry turbocharger, although their effects are highly coupled. Moreover, these actuators are subject to physical constraints which seems to make an advanced control approach like model predictive control (MPC) the method of choice. In order to deal with MPC sampling times in the order of milliseconds, we employed an extension of the recently developed online active set strategy for controlling a real-world Diesel engine in a closed-loop manner. The results show that predictive engine control based on online optimisation can be accomplished in real-time even on cheap controller hardware and leads to increased controller performance.

Hans Joachim Ferreau; Peter Ortner; Peter Langthaler; Luigi del Re; Moritz Diehl

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

X-RAY ACTIVE MATRIX PIXEL SENSORS BASEDON J-FET TECHNOLOGY DEVELOPED FOR THE LINAC COHERENT LIGHT SOURCE.  

SciTech Connect (OSTI)

An X-ray Active Matrix Pixel Sensor (XAMPS) is being developed for recording data for the X-ray Pump Probe experiment at the Linac Coherent Light Source (LCLS). Special attention has to be paid to some technological challenges that this design presents. New processes were developed and refined to address problems encountered during previous productions of XAMPS. The development of these critical steps and corresponding tests results are reported here.

CARINI,G.A.; CHEN, W.; LI, Z.; REHAK, P.; SIDDONS, D.P.

2007-10-29T23:59:59.000Z

162

On active surge control of compressors using a mass flow Bjrnar Bhagen and Jan Tommy Gravdahl  

E-Print Network [OSTI]

, the stable operating region of centrifugal compressors is bounded due to the occur- rence of surge. Surge of a centrifugal compressor driven by an electrical motor and the control system consists of three partsOn active surge control of compressors using a mass flow observer Bjørnar Bøhagen and Jan Tommy

Gravdahl, Jan Tommy

163

Introduction to Focus Issue: Design and Control of Self-Organization in Distributed Active Systems  

E-Print Network [OSTI]

Introduction to Focus Issue: Design and Control of Self-Organization in Distributed Active Systems; published online 27 June 2008 Spatiotemporal self-organization is found in a wide range of distributed describe biological and chemical systems designed to exhibit spatiotemporal dynamics and the control

Showalter, Kenneth

164

Magmatic Gas Composition Reveals the Source Depth of Slug-Driven Strombolian Explosive Activity  

Science Journals Connector (OSTI)

...hydrothermal meteoric steam during shallow...closed- to open-system conditions...entrainment of meteoric steam from the shallow hydrothermal system. (ii) The gas slugs...prevented quantitative assessment of the slug source...is a powerful tool in such studies...

Mike Burton; Patrick Allard; Filippo Mur; Alessandro La Spina

2007-07-13T23:59:59.000Z

165

Instantaneous Active and Nonactive Power Control of Distributed Energy Resources with Current Limiter  

SciTech Connect (OSTI)

Abstract -- Distributed energy resources (DER) with a power electronics inverter interface can provide both active power and nonactive power simultaneously and independently. A decoupled control algorithm of active power and nonactive power is developed based on the instantaneous active power and nonactive power theory. A current limiter is combined to the control algorithm, and it ensures that the inverter is not overloaded. During the normal system operation, the active power has higher priority over the nonactive power so that the energy from a DER can be fully transferred to the grid. Within the inverter s capability, nonactive power is provided to the grid as required. With this control algorithm, the inverter s capabilities are taken full advantage at all times, both in terms of functionality as well as making use of its full KVA rating. Through the algorithm, the inverter s active power and nonactive power are controlled directly, simultaneously, and independently. Several experimental results fully demonstrate the validity and effectiveness of this new control algorithm. As evidenced by the fast dynamic response that results, a DER system with the control algorithm can provide full services to the grid in both steady state and during transient events.

Xu, Yan [ORNL; Li, Huijuan [ORNL; Rizy, D Tom [ORNL; Li, Fangxing [ORNL; Kueck, John D [ORNL

2010-01-01T23:59:59.000Z

166

A 7-Level Single DC Source Cascaded H-Bridge Multilevel Inverters Control  

E-Print Network [OSTI]

vehicles or hybrid electric vehicles where each phase of the inverter can be implemented using only HE electric vehicles (EV) and Hybrid Electric Vehicles (HEV) currently seem to constitute, the motor drive, comprising the electric motor, the power converter, and the electronic controller

Paris-Sud XI, Université de

167

Organic carbon burial efficiency in lake sediments controlled by oxygen exposure time and sediment source  

E-Print Network [OSTI]

Organic carbon burial efficiency in lake sediments controlled by oxygen exposure time and sediment : deposited OC) in a diverse set of 27 different sediments from 11 lakes, focusing on the potential effects burial efficiency was high (mean 48%), and it was particularly high in sediments receiving high input

Wehrli, Bernhard

168

TrustForge: Flexible Access Control for Collaborative Crowd-Sourced Environment  

E-Print Network [OSTI]

of the credentialing and access control process in the context of component-based systems, where users contribute for users based on the quality of their past component contributions are used to tune the static policies-07-1-0907. The views expressed are those of the TrustForge team and do not reflect the official policy or position

Plotkin, Joshua B.

169

U-225: Citrix Access Gateway Plug-in for Windows nsepacom ActiveX Control  

Broader source: Energy.gov (indexed) [DOE]

5: Citrix Access Gateway Plug-in for Windows nsepacom ActiveX 5: Citrix Access Gateway Plug-in for Windows nsepacom ActiveX Control Vulnerabilities U-225: Citrix Access Gateway Plug-in for Windows nsepacom ActiveX Control Vulnerabilities August 1, 2012 - 5:37am Addthis PROBLEM: Citrix Access Gateway Plug-in for Windows nsepacom ActiveX Control Vulnerabilities PLATFORM: Citrix Access Gateway 9.x ABSTRACT: Two vulnerabilities in Citrix Access Gateway Plug-in for Windows can be exploited by malicious people to compromise a user's system. reference LINKS: Citrix Knowledge Center Secunia Advisory SA45299 Secunia Research Secunia Research CVE-2011-2592 CVE-2011-2593 IMPACT ASSESSMENT: High Discussion: Research has discovered two vulnerabilities in Citrix Access Gateway Plug-in for Windows, which can be exploited by malicious people to

170

U-126: Cisco Adaptive Security Appliances Port Forwarder ActiveX Control  

Broader source: Energy.gov (indexed) [DOE]

26: Cisco Adaptive Security Appliances Port Forwarder ActiveX 26: Cisco Adaptive Security Appliances Port Forwarder ActiveX Control Buffer Overflow Vulnerability U-126: Cisco Adaptive Security Appliances Port Forwarder ActiveX Control Buffer Overflow Vulnerability March 16, 2012 - 7:00am Addthis PROBLEM: Cisco Adaptive Security Appliances Port Forwarder ActiveX Control Buffer Overflow Vulnerability PLATFORM: Cisco Adaptive Security Appliance (ASA) 7.x, Cisco Adaptive Security Appliance (ASA) 8.x, Cisco ASA 5500 Series Adaptive Security Appliances ABSTRACT: A vulnerability was reported in Cisco ASA. A remote user can cause arbitrary code to be executed on the target user's system. reference LINKS: Secunia Advisory SA48422 SecurityTracker Alert ID: 1026799 CVE-2012-0358 IMPACT ASSESSMENT: High Discussion: A remote user can create specially crafted HTML that, when loaded by the

171

National synchrotron light source. Activity report, October 1, 1994--September 30, 1995  

SciTech Connect (OSTI)

This report discusses research conducted at the National Synchrotron Light Source in the following areas: atomic and molecular science; energy dispersive diffraction; lithography, microscopy, and tomography; nuclear physics; scattering and crystallography studies of biological materials; time resolved spectroscopy; UV photoemission and surface science; x-ray absorption spectroscopy; x-ray scattering and crystallography; x-ray topography; the 1995 NSLS annual users` meeting; 17th international free electron laser conference; micro bunches workshop; VUV machine; VUV storage ring parameters; beamline technical improvements; x-ray beamlines; x-ray storage ring parameters; the NSLS source development laboratory; the accelerator test facility (ATF); NSLS facility improvements; NSLS advisory committees; NSLS staff; VUV beamline guide; and x-ray beamline guide.

Rothman, E.Z.; Hastings, J. [eds.

1996-05-01T23:59:59.000Z

172

Active Fault Controls At High-Temperature Geothermal Sites- Prospecting For  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Active Fault Controls At High-Temperature Geothermal Sites- Prospecting For New Faults Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Paper: Active Fault Controls At High-Temperature Geothermal Sites- Prospecting For New Faults Details Activities (1) Areas (1) Regions (0) Abstract: Our previous studies found spatial associations between seismically active faults and high-temperature geothermal resources in the western Basin and Range, suggesting that recency of fault movement may be a useful criterion for resource exploration. We have developed a simple conceptual model in which recently active (Holocene) faults are preferred conduits for migration of thermal water from deep crustal depths, and we

173

U-154: IBM Rational ClearQuest ActiveX Control Buffer Overflow  

Broader source: Energy.gov (indexed) [DOE]

54: IBM Rational ClearQuest ActiveX Control Buffer Overflow 54: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability U-154: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability April 24, 2012 - 7:00am Addthis PROBLEM: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability PLATFORM: Versions 7.1.1 through 7.1.2.5, 8.0, and 8.0.0.1. ABSTRACT: A vulnerability was reported in IBM Rational ClearQuest. A remote user can cause arbitrary code to be executed on the target user's system. reference links: SecurityTracker Alert ID: 1026958 Secunia Advisory SA48933 CVE-2012-0708 IMPACT ASSESSMENT: High Discussion: The vulnerability is caused due to a function prototype mismatch in the "RegisterSchemaRepoFromFileByDbSet()" function in the IBM Rational ClearQuest ActiveX control (cqole.dll). This can be exploited to cause a

174

U-154: IBM Rational ClearQuest ActiveX Control Buffer Overflow  

Broader source: Energy.gov (indexed) [DOE]

54: IBM Rational ClearQuest ActiveX Control Buffer Overflow 54: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability U-154: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability April 24, 2012 - 7:00am Addthis PROBLEM: IBM Rational ClearQuest ActiveX Control Buffer Overflow Vulnerability PLATFORM: Versions 7.1.1 through 7.1.2.5, 8.0, and 8.0.0.1. ABSTRACT: A vulnerability was reported in IBM Rational ClearQuest. A remote user can cause arbitrary code to be executed on the target user's system. reference links: SecurityTracker Alert ID: 1026958 Secunia Advisory SA48933 CVE-2012-0708 IMPACT ASSESSMENT: High Discussion: The vulnerability is caused due to a function prototype mismatch in the "RegisterSchemaRepoFromFileByDbSet()" function in the IBM Rational ClearQuest ActiveX control (cqole.dll). This can be exploited to cause a

175

Linking future aerosol radiative forcing to shifts in source activities Dorothy Koch,1  

E-Print Network [OSTI]

because of economic growth, or the desire to mitigate climate effects or improve air quality, affect all or 'black carbon' (BC) that also absorb incoming solar radiation, exert a positive radiative forcing depend upon fuels burned and technologies used in various energy- related activities. Actions that occur

176

Finding the Controls of a Go-To Enzyme | Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Watching Liquids Separate at White Heat Watching Liquids Separate at White Heat A New Spin on Inducing Chirality in Pre-biological Molecules How Ancient Rock Got Off to a Hot Start A Quantum of Vibration in an Unexpected Place A Virus That Can Infect Lung Cancer Cells Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed Finding the Controls of a Go-To Enzyme DECEMBER 16, 2008 Bookmark and Share Overall structure shows of the calpain enzyme as determined by x-ray crystallography. A molecular enzyme that is involved in many necessary and beneficial cellular processes would seem to be a friend best left to go about its business. But when a defective or overactive variation of that same enzyme,

177

Chapter 33 - Monitoring and Control ofRenewable Energy Sources using Synchronized Phasor Measurements  

Science Journals Connector (OSTI)

Abstract The share of wind power has strongly increased in electricity production, raising several issues concerning its integration to power grids. Unexpected dynamic phenomena, such as oscillatory events around 13 Hz have been recorded in the US by Oklahoma Gas & Electric (OG&E). Such interactions differ from traditional and well studied inter-area oscillations, and the ability to detect them is beyond the measurement capabilities of most of the existing measurement equipment and monitoring tools in Energy Management Systems (EMS) systems. This chapter presents the development and implementation of algorithms for fast oscillation detection, focusing on the aforementioned case. It proposes two solutions for real-time monitoring application that exploits synchronized phasor measurements allowing real-time analysis of sub-synchronous wind farm dynamics. These tools were built as prototypes for real-time application which utilizes Phasor Measurement Unit (PMU) data for enhanced monitoring and control of wind farms. The software tools developed in the chapter serve as evidence of the flexibility offered by non-conventional software development systems for PMU applications which provide unlimited opportunities to conceive new software tools that will aid with the integration and management of renewable resources into power grids.

Luigi Vanfretti; Maxime Baudette; Austin White

2014-01-01T23:59:59.000Z

178

ACTIVE FILTER HARDWARE DESIGN & PERFORMANCE FOR THE DIII-D PLASMA CONTROL SYSTEM  

SciTech Connect (OSTI)

OAK-B135 The digital plasma control system (PCS), currently in operation on the DIII-D tokamak, requires inputs from a large number of sensors. Due to the nature of the digitizers and the relative noisy environment from which these signals are derived, each of the 32 signals must be conditioned via an active filter. Two different types of filters, Chebyshev and Bessel with fixed frequencies: 100 Hz Bessel was used for filtering the motional Stark effect diagnostic data. 800 Hz Bessel was designed to filter plasma control data and 1200 Hz Chebyshev is used with closed loop control of choppers. The performance of the plasma control system is greatly influenced by how well the actual filter responses match the software model used in the control system algorithms. This paper addresses the various issues facing the designer in matching the electrical design with the theoretical.

SELLERS,D; FERRON,J.R; WALKER,M.L; BROESCH,J.D

2003-10-01T23:59:59.000Z

179

Review of the Hanford Tank Farms Radiological Controls Activity-Level Implementation, December 2012  

Broader source: Energy.gov (indexed) [DOE]

Tank Farms Tank Farms Radiological Controls Activity-Level Implementation May 2011 December 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................. 1 2.0 Background .......................................................................................................................................... 1 3.0 Scope.................................................................................................................................................... 2 4.0 Methodology ........................................................................................................................................

180

Independent Oversight Review of Oak Ridge Environmental Management Radiological Controls Activity Level Implementation - June 2013  

Broader source: Energy.gov (indexed) [DOE]

May 2011 May 2011 Independent Oversight Review of Oak Ridge Environmental Management Radiological Controls Activity Level Implementation June 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 1

Note: This page contains sample records for the topic "activity controlled source" 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

Review of the Hanford Tank Farms Radiological Controls Activity-Level Implementation, December 2012  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tank Farms Tank Farms Radiological Controls Activity-Level Implementation May 2011 December 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................. 1 2.0 Background .......................................................................................................................................... 1 3.0 Scope.................................................................................................................................................... 2 4.0 Methodology ........................................................................................................................................

182

Independent Oversight Review of Oak Ridge Environmental Management Radiological Controls Activity Level Implementation - June 2013  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

May 2011 May 2011 Independent Oversight Review of Oak Ridge Environmental Management Radiological Controls Activity Level Implementation June 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 1

183

Ethanol-withdrawal seizures are controlled by tissue plasminogen activator via modulation of  

E-Print Network [OSTI]

Ethanol-withdrawal seizures are controlled by tissue plasminogen activator via modulation of NR2B (received for review September 1, 2004) Chronic ethanol abuse causes up-regulation of NMDA receptors, which underlies seizures and brain damage upon ethanol with- drawal (EW). Here we show that tissue

184

From the decoding of cortical activities to the control of a JACO robotic arm  

E-Print Network [OSTI]

From the decoding of cortical activities to the control of a JACO robotic arm: a whole processing in the cortex of a monkey and replicates the associated movements on a JACO robotic arm by Kinova. We developed the data, compute the position of the robotic finger and send this position to the robotic arm. More pre

Paris-Sud XI, Université de

185

Field Testing of Activated Carbon Injection Options for Mercury Control at TXU's Big Brown Station  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Field TesTing oF AcTivATed cArbon Field TesTing oF AcTivATed cArbon injecTion opTions For Mercury conTrol AT TXu's big brown sTATion Background The 2005 Clean Air Mercury Rule will require significant reductions in mercury emissions from coal-fired power plants. Lignite coal is unique because of its highly variable ash content (rich in alkali and alkaline-earth elements), high moisture levels, low chlorine content, and high calcium content. Unique to Texas lignite coals are relatively high iron and selenium concentrations. When combusting Texas lignite coals, up to 80 percent of the mercury in the flue gas is present as elemental mercury, which is not readily captured by downstream pollution control devices. To better understand the factors that influence mercury control at units firing

186

Audience/Panel Discussion: Sites Lesson Learned about Activity-level Work Planning and Control Using EFCOG Work Planning and Control Guideline  

Broader source: Energy.gov [DOE]

Slide Presentation by Donna J. Governor, Deputy Dept Mgr for Planning & Integration, Lawrence Livermore National Laboratory. Lawrence Livermore National Laboratory work planning and control lessons learned and audience/panel discussion on site's lessons learned about Activity-level Work Planning and Control using EFCOG Work Planning and Control Guideline Document.

187

Strategies for using electromyographic signals to control ankle torque in an active joint brace for alleviating drop-foot gait  

E-Print Network [OSTI]

This thesis describes the efforts to develop control strategies that use EMG signals from the anterior tibialis muscle to control ankle torque in an active ankle-foot orthosis. This would ultimately help rehabilitate persons ...

Lin, Elizabeth C

2006-01-01T23:59:59.000Z

188

Off-site source recovery project case study: disposal of high activity cobalt 60 sources at the Nevada test site 2008  

SciTech Connect (OSTI)

The Off-Site Source Recovery Project has been operating at Los Alamos National Laboratory since 1998 to address the U.S. Department of Energy responsibility for collection and management of orphaned or disused radioactive sealed sources which may represent a risk to public health and national security if not properly managed.

Cocina, Frank G [Los Alamos National Laboratory; Stewart, William C [Los Alamos National Laboratory; Wald - Hopkins, Mark [Los Alamos National Laboratory; Hageman, John P [SWRI

2009-01-01T23:59:59.000Z

189

Analysis of control strategies for thermally activated building systems under demand side management mechanisms  

Science Journals Connector (OSTI)

Abstract Thermally activated buildings systems (TABS) are systems that integrate heating/cooling devices in the building structure, so that the building elements act as thermal storage and have an active role in the energy supply and demand management. Although TABS are well known systems, there are still open questions in their realization, mainly concerning appropriate control strategies which are influenced by the large thermal inertia. The purpose of this paper is to analyze the influence of demand side management control strategies on the performance of a thermally activated building system applied in a commercial building. The goal is to estimate the potential of TABS for load shifting requested by the electricity grid. The analysis is performed by means of a sample case: first the existing TABS control strategy and then the possible implementation of DSM mechanisms are analyzed. In particular three different demand side management mechanisms are evaluated: (i) a peak shaving strategy, (ii) a random request of switching on/off the system and (iii) a night load shifting strategy. The simulation results show high potential of TABS within the DSM framework, since TABS allow load control while scarcely affect thermal comfort.

A. Arteconi; D. Costola; P. Hoes; J.L.M. Hensen

2014-01-01T23:59:59.000Z

190

Lattice-Strain Control of the Activity in Dealloyed Core-Shell Fuel Cell Catalysts  

SciTech Connect (OSTI)

Electrocatalysis will play a key role in future energy conversion and storage technologies, such as water electrolysers, fuel cells and metalair batteries. Molecular interactions between chemical reactants and the catalytic surface control the activity and efficiency, and hence need to be optimized; however, generalized experimental strategies to do so are scarce. Here we show how lattice strain can be used experimentally to tune the catalytic activity of dealloyed bimetallic nanoparticles for the oxygen-reduction reaction, a key barrier to the application of fuel cells and metalair batteries. We demonstrate the coreshell structure of the catalyst and clarify the mechanistic origin of its activity. The platinum-rich shell exhibits compressive strain, which results in a shift of the electronic band structure of platinum and weakening chemisorption of oxygenated species. We combine synthesis, measurements and an understanding of strain from theory to generate a reactivitystrain relationship that provides guidelines for tuning electrocatalytic activity.

Strasser, Peter; Shirlaine, Koh; Anniyev, Toyli; Greeley, Jeffrey P.; More, Karren L.; Yu, Chengfei; Liu, Zengcai; Kaya, Sarp; Nordlund, Dennis; Ogasawara, Hirohito; Toney, Michael F.; Nilsson, Anders R.

2010-04-30T23:59:59.000Z

191

Lattice-Strain Control of the Activity in Dealloyed Core-Shell Fuel Cell Catalysts  

SciTech Connect (OSTI)

Electrocatalysis will play a key role in future energy conversion and storage technologies, such as water electrolysers, fuel cells and metal-air batteries. Molecular interactions between chemical reactants and the catalytic surface control the activity and efficiency, and hence need to be optimized; however, generalized experimental strategies to do so are scarce. Here we show how lattice strain can be used experimentally to tune the catalytic activity of dealloyed bimetallic nanoparticles for the oxygen-reduction reaction, a key barrier to the application of fuel cells and metal-air batteries. We demonstrate the core-shell structure of the catalyst and clarify the mechanistic origin of its activity. The platinum-rich shell exhibits compressive strain, which results in a shift of the electronic band structure of platinum and weakening chemisorption of oxygenated species. We combine synthesis, measurements and an understanding of strain from theory to generate a reactivity-strain relationship that provides guidelines for tuning electrocatalytic activity.

Strasser, P. [Berlin Institute of Technology (Technische Universitat Berlin); Koh, Shirlaine [University of Houston, Houston; Anniyev, Toyli [SLAC National Accelerator Laboratory; Greeley, Jeff [Argonne National Laboratory (ANL); More, Karren Leslie [ORNL; Yu, Chengfei [University of Houston, Houston; Liu, Zengcai [University of Houston, Houston; Kaya, Sarpa [SLAC National Accelerator Laboratory; Nordlund, Dennis [SLAC National Accelerator Laboratory; Ogasawara, Hirohito [SLAC National Accelerator Laboratory; Toney, Michael F. [SLAC National Accelerator Laboratory; Anders, Nilsson [SLAC National Accelerator Laboratory

2010-01-01T23:59:59.000Z

192

Predictive Optimal Control of Active and Passive Building Thermal Storage Inventory  

SciTech Connect (OSTI)

Cooling of commercial buildings contributes significantly to the peak demand placed on an electrical utility grid. Time-of-use electricity rates encourage shifting of electrical loads to off-peak periods at night and weekends. Buildings can respond to these pricing signals by shifting cooling-related thermal loads either by precooling the building's massive structure or the use of active thermal energy storage systems such as ice storage. While these two thermal batteries have been engaged separately in the past, this project investigates the merits of harnessing both storage media concurrently in the context of predictive optimal control. This topical report describes the demonstration of the model-based predictive optimal control for active and passive building thermal storage inventory in a test facility in real-time using time-of-use differentiated electricity prices without demand charges. The laboratory testing findings presented in this topical report cover the second of three project phases. The novel supervisory controller successfully executed a three-step procedure consisting of (1) short-term weather prediction, (2) optimization of control strategy over the next planning horizon using a calibrated building model, and (3) post-processing of the optimal strategy to yield a control command for the current time step that can be executed in the test facility. The primary and secondary building mechanical systems were effectively orchestrated by the model-based predictive optimal controller in real-time while observing comfort and operational constraints. The findings reveal that when the optimal controller is given imperfect weather fore-casts and when the building model used for planning control strategies does not match the actual building perfectly, measured utility costs savings relative to conventional building operation can be substantial. This requires that the facility under control lends itself to passive storage utilization and the building model includes a realistic plant model. The savings associated with passive building thermal storage inventory proved to be small be-cause the test facility is not an ideal candidate for the investigated control technology. Moreover, the facility's central plant revealed the idiosyncratic behavior that the chiller operation in the ice-making mode was more energy efficient than in the chilled-water mode. Field experimentation (Phase III) is now required in a suitable commercial building with sufficient thermal mass, an active TES system, and a climate conducive to passive storage utilization over a longer testing period to support the laboratory findings presented in this topical report.

Gregor P. Henze; Moncef Krarti

2003-12-17T23:59:59.000Z

193

Controllable seismic source  

DOE Patents [OSTI]

An apparatus for generating seismic waves includes a housing, a strike surface within the housing, and a hammer movably disposed within the housing. An actuator induces a striking motion in the hammer such that the hammer impacts the strike surface as part of the striking motion. The actuator is selectively adjustable to change characteristics of the striking motion and characteristics of seismic waves generated by the impact. The hammer may be modified to change the physical characteristics of the hammer, thereby changing characteristics of seismic waves generated by the hammer. The hammer may be disposed within a removable shock cavity, and the apparatus may include two hammers and two shock cavities positioned symmetrically about a center of the apparatus.

Gomez, Antonio; DeRego, Paul Jeffrey; Ferrel, Patrick Andrew; Thom, Robert Anthony; Trujillo, Joshua J.; Herridge, Brian

2014-08-19T23:59:59.000Z

194

Review of the Waste Isolation Pilot Plant Work Planning and Control Activities, April 2013  

Broader source: Energy.gov (indexed) [DOE]

Independent Oversight Review of the Independent Oversight Review of the Waste Isolation Pilot Plant Work Planning and Control Activities April 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1 4.0 Methodology......................................................................................................................................... 2

195

Study Shows Active Power Controls from Wind May Increase Revenues and Improve System Reliability  

Broader source: Energy.gov [DOE]

The DOE Wind Program and the National Renewable Energy Laboratory recently published a study conducted in collaboration with the Electric Power Research Institute and the University of Colorado. Researchers examined how the contribution of wind power providing active power controls could benefit the total power system economics, increase revenue streams, and improve the reliability and security of the nations power system, all while having negligible impacts on the turbine and its components.

196

Close-spaced thermionic converters with active spacing control and heat-pipe isothermal emitters  

SciTech Connect (OSTI)

Thermionic converters with interelectrode gaps smaller than 10 microns are capable of substantial performance improvements over conventional ignited mode diodes. Previous devices which have demonstrated operation at such small gaps have done so at low power densities and emitter temperatures. Higher power operation requires overcoming two primary design issues: thermal distortion of the emitter due to temperature gradients and degradation of the in-gap spacers at higher emitter temperatures. This work describes two innovations for solution of these issues. The issue of thermal distortion was addressed by an isothermal emitter incorporating a heat-pipe into its structure. Such a heat-pipe emitter, with a single-crystal emitting surface, was fabricated and characterized. Finite-element computational modeling was used to analyze its distortion with an applied heat flux. The calculations suggested that thermal distortion would be significantly reduced as compared with a solid emitter. Ongoing work and preliminary experimental results are described for a system of active interelectrode gap control. In the present design an integral transducer determines the interelectrode gap of the converter. Initial designs for spacing actuators and their required cesium vapor seals are discussed. A novel hot-shell converter design incorporating active spacing control and low-temperature seals is presented. A converter incorporating the above features would be capable of near ideal-converter performance at high power densities. In addition, active spacing control can potentially completely eliminate short-circuit failures in thermionic converter systems.

Fitzpatrick, G.O.; Koester, J.K.; Chang, J.; Britt, E.J.; McVey, J.B. [Space Power, Inc., San Jose, CA (United States)

1996-12-31T23:59:59.000Z

197

A PERMEABLE ACTIVE AMENDMENT CONCRETE (PAAC) FOR CONTAMINANT REMEDIATION AND EROSION CONTROL  

SciTech Connect (OSTI)

The final project report for SEED SERDP ER - 2134 describes the development of permeable active amendment concrete (PAAC), which was evaluated through four tasks: 1) development of PAAC; 2) assessment of PAAC for contaminant removal; 3) evaluation of promising PAAC formulations for potential environmental impacts; and 4) assessment of the hydraulic, physical, and structural properties of PAAC. Conventional permeable concrete (often referred to as pervious concrete) is concrete with high porosity as a result of an extensive and interconnected void content. It is made from carefully controlled amounts of water and cementitious materials used to create a paste that forms a coating around aggregate particles. The mixture has a substantial void content (e.g., 15% - 25%) that results in a highly permeable structure that drains quickly. In PAAC, the aggregate material is partly replaced by chemically-active amendments that precipitate or adsorb contaminants in water that flows through the concrete interstices. PAAC combines the relatively high structural strength, ample void space, and water permeability of pervious concrete with the contaminant sequestration ability of chemically-active amendments to produce a new material with superior durability and ability to control contaminant mobility. The high surface area provided by the concrete interstices in PAAC provides significant opportunity for contaminants to react with the amendments incorporated into the concrete matrix. PAAC has the potential to immobilize a large variety of organic and inorganic contaminants by incorporating different active sequestering agents including phosphate materials (rock phosphate), organoclays, zeolite, and lime individually or in combinations.

Knox, A.; Paller, M.; Dixon, K.

2012-06-29T23:59:59.000Z

198

2013 IREP Symposium-Bulk Power System Dynamics and Control -IX (IREP), August 25-30, 2013, Rethymnon, Greece Effects of Various Uncertainty Sources on  

E-Print Network [OSTI]

of uncertainty arising from renewable-based electricity generation and noise in communication channels on the AGC) must schedule adequate electric supply from traditional generators on AGC to manage larger net system, Rethymnon, Greece Effects of Various Uncertainty Sources on Automatic Generation Control Systems D

Liberzon, Daniel

199

The role of physical activity to control obesity problem in Malaysia  

Science Journals Connector (OSTI)

Obesity is defined as a condition in which an individual has an excess of body fat and it is accumulated to the extent that it can lead to numerous health problems and decreases the quality and length of life. Overall the contributing factor to obesity varies. Lack of physical activity and increased sedentary behaviour has been identified as the causes of weight gain and various health implications including obesity. Rapid development in industrialization and urbanization has brought Malaysia to be the next millennium country in the world and this causes changes in the countrys socioeconomic especially the lifestyles of Malaysians. In conjunction with this the aim of this paper is to simulate the changes in physical activities and to highlight its implication on body weight and prevalence of overweight and obesity in a Malaysian adult population. This study combines different strands of knowledge consisting of nutrition physical activity and body metabolism and these elements have been synthesised into a system dynamics model called SIMULObese. The development of this model has considered the interrelations between those various strands in one multifaceted human weight regulation system. Findings from this study revealed that Malaysian adults perform less physical activity and this has resulted in weight gain and increase in prevalence of overweight and obesity. Therefore findings from this study bring the important message to various parties such as practitioners researchers educators and publics about the importance of focusing on combinations of intensity frequency and duration of moderate-vigorous activity for adult obesity control in Malaysia.

2014-01-01T23:59:59.000Z

200

Evaluation of active flow control applied to wind turbine blade section  

Science Journals Connector (OSTI)

A feasibility study for implementing active flow control (AFC) methods to improve the performance of wind turbines was performed. The experimental effort investigated the impact of zero-mass-flux (ZMF) piezofluidic actuators attempting to controlboundary layer separation from thick airfoils that are suitable for wind turbine rotor blades. It was demonstrated that the ZMF actuators can replace passive vortexgenerators that are commonly used for boundary layer separation delay without the inherent drag penalty that the passive devices impose. It has been shown that ZMF fluidic actuators are suitable for flow control in wind turbine application due to the fact that they are adjustable for wider Reynolds number range while vortexgenerators are tuned to perform well in one design point. It was demonstrated that AFC can effectively double the maximum lift of this airfoil at low Reynolds numbers. A possible application is a significant reduction of the turbine start-up velocity. It was also found that even for a contaminated blade AFC is capable to delay the stall and decrease the drag using low energy expenditure therefore restoring and even surpassing the clean airfoil performance. The effectiveness of the AFC method was examined using a newly defined aerodynamic figure of merit. Various scaling options for collapsing the effect of the excitation magnitude on the lift alternation due to the activation of zero-mass-flux periodic excitation for boundary layer separation control are proposed and examined using experimental data.

O. Stalnov; A. Kribus; A. Seifert

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Radio Sources in Low-Luminosity Active Galactic Nuclei. I. VLA Detections of Compact, Flat-Spectrum Cores  

E-Print Network [OSTI]

We report a 0.2" resolution, 15 GHz survey of a sample of 48 low-luminosity active galactic nuclei with the Very Large Array. Compact radio emission has been detected in 57% (17 of 30) of LINERs and low-luminosity Seyferts, at least 15 of which have a flat to inverted radio spectrum (alpha > -0.3). The compact radio cores are found in both type 1 (i.e. with broad Halpha) and type 2 (without broad Halpha) nuclei. The 2 cm radio power is significantly correlated with the emission-line ([OI] lambda6300) luminosity. While the present observations are consistent with the radio emission originating in star-forming regions, higher resolution radio observations of 10 of the detected sources, reported in a companion paper (Falcke et al. 2000), show that the cores are very compact (= 10^8K) and probably synchrotron self-absorbed, ruling out a starburst origin. Thus, our results suggest that at least 50% of low-luminosity Seyferts and LINERs in the sample are accretion powered, with the radio emission presumably coming from jets or advection-dominated accretion flows. We have detected only 1 of 18 `transition' (i.e. LINER + HII) nuclei observed, indicating their radio cores are significantly weaker than those of `pure' LINERs.

Neil M. Nagar; Heino Falcke; Andrew S. Wilson; Luis C. Ho

2000-05-18T23:59:59.000Z

202

Guideline to good practices for control of maintenance activities at DOE nuclear facilities  

SciTech Connect (OSTI)

The purpose of the Guideline to Good Practices for Control of Maintenance Activities at DOE Nuclear Facilities is to provide contractor maintenance organizations with information that may be used for the development and implementation of a rigorously controlled maintenance program directed at achieving high quality work performance, personnel safety, radiological protection, operating equipment/system protection, and overall site safety and reliability at DOE nuclear facilities. This document is intended to be an example guideline for the implementation of DOE Order 4330.4A, Maintenance Management Program, Chapter II, Element 7. DOE contractors should not feel obligated to adopt all parts of this guide. Rather, they should use the information contained herein as a guide for developing maintenance programs that are applicable to their facility.

Not Available

1993-03-01T23:59:59.000Z

203

DOE-STD-1042-93 CN-1; Guide to Good Practices for Control Area Activities  

Broader source: Energy.gov (indexed) [DOE]

2-93 2-93 June 1993 CHANGE NOTICE NO. 1 December 1998 DOE STANDARD GUIDE TO GOOD PRACTICES FOR CONTROL AREA ACTIVITIES U.S. Department of Energy AREA MISC Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced from the best available copy. Available to DOE and DOE contractors from ES&H Technical Information Services, U.S. Department of Energy, (800) 473-4375, fax: (301) 903-9823. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 605-6000. Change Notice No.1 DOE-STD-1042-93 December 1998 Guide to Good Practices for Operations Turnover Page/Section Change Concluding Material Preparing Activity was changed from

204

A Visual Analytics Approach to Structured Data Analysis to Enhance Nonproliferation and Arms Control Verification Activities  

SciTech Connect (OSTI)

Analysis activities for Nonproliferation and Arms Control verification require the use of many types of data. Tabular structured data, such as Excel spreadsheets and relational databases, have traditionally been used for data mining activities, where specific queries are issued against data to look for matching results. The application of visual analytics tools to structured data enables further exploration of datasets to promote discovery of previously unknown results. This paper discusses the application of a specific visual analytics tool to datasets related to the field of Arms Control and Nonproliferation to promote the use of visual analytics more broadly in this domain. Visual analytics focuses on analytical reasoning facilitated by interactive visual interfaces (Wong and Thomas 2004). It promotes exploratory analysis of data, and complements data mining technologies where known patterns can be mined for. Also with a human in the loop, they can bring in domain knowledge and subject matter expertise. Visual analytics has not widely been applied to this domain. In this paper, we will focus on one type of data: structured data, and show the results of applying a specific visual analytics tool to answer questions in the Arms Control and Nonproliferation domain. We chose to use the T.Rex tool, a visual analytics tool developed at PNNL, which uses a variety of visual exploration patterns to discover relationships in structured datasets, including a facet view, graph view, matrix view, and timeline view. The facet view enables discovery of relationships between categorical information, such as countries and locations. The graph tool visualizes node-link relationship patterns, such as the flow of materials being shipped between parties. The matrix visualization shows highly correlated categories of information. The timeline view shows temporal patterns in data. In this paper, we will use T.Rex with two different datasets to demonstrate how interactive exploration of the data can aid an analyst with arms control and nonproliferation verification activities. Using a dataset from PIERS (PIERS 2014), we will show how container shipment imports and exports can aid an analyst in understanding the shipping patterns between two countries. We will also use T.Rex to examine a collection of research publications from the IAEA International Nuclear Information System (IAEA 2014) to discover collaborations of concern. We hope this paper will encourage the use of visual analytics structured data analytics in the field of nonproliferation and arms control verification. Our paper outlines some of the challenges that exist before broad adoption of these kinds of tools can occur and offers next steps to overcome these challenges.

Gillen, David S.

2014-08-07T23:59:59.000Z

205

Competitive Sourcing  

Broader source: Energy.gov (indexed) [DOE]

Competitive Sourcing Competitive Sourcing The Department of Energy's (DOE) Competitive Sourcing program is a management initiative aimed at improving DOE's performance and reducing the Department's operational costs. The program is governed by Office of Management and Budget (OMB) Circular A- 76, Performance of Commercial Activities, dated May 29, 2003. The commercial activities selected for review and competition include functions performed by government employees that are readily available in the private sector, and where the potential for efficiencies, regardless of the winning provider, are highly likely. The candidate functions are chosen from the Department's annual Federal Activities Inventory Reform (FAIR) Act Inventory and subjected to a feasibility review to determine if a prudent business case can be made to enter

206

Direct active and reactive power control of 3-level NPC-fed DFIG considering power ripple minimisation  

Science Journals Connector (OSTI)

Despite the advantages of three-level neutral point clamp (NPC) converters compared with standard voltage source inverters (VSIs), most of the direct power control (DPC) strategies for doubly fed induction generator (DFIG) reported in the literature, only utilise VSIs. As regards three-level NPC converter generates higher number of voltage vectors compared with standard VSIs, This paper presents a DPC strategy for DFIG using three-level NPC converters in which three-level NPC voltage vectors are employed to reduce large power ripples of conventional DPC. Therefore, a new optimised switching table is derived. Using this table, DFIG provides not only elaborate active and reactive powers which track their reference values very well, but also large power ripple is compensated. Also, because of ripple reduction, total harmonic distortion of rotor current, stator current, stator voltage and grid line-to-line voltage is reduced in proposed strategy compared with conventional DPC. Simulation results show the effectiveness of proposed method and have a reasonable correspondence with theoretical and mathematical analysis.

Milad Yousefi-Talouki; Parviz Ramezanpour

2014-01-01T23:59:59.000Z

207

ANL Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Activities of the DOD Activities of the DOD Project Office focus today on the Navy's Free Electron Laser Program Argonne Accelerator Institute Meeting June 16, 2009 2 Several Beam Activities and Interests Ongoing  Terahertz sources and applications  Navy Free Electron Laser (Focus area today)  Free Electron Laser Applications  Electromagnetic Interference Technology Review Committees  Novel Fiber Optic Materials with Army Research Lab  Optical Diagnostics for next-generation light sources  Neutron detection schemes  NATO Sensors and Electronics Panel, international field tests of directed energy source applications  Controls  Radiation Oncology 3 Background, Naval Directed Energy History The U.S Navy has been investigating utility of lasers since the 1960's and the

208

Modeling and controller synthesis for the cascaded H-bridge multilevel active power filter with ADALINE-based identifiers  

Science Journals Connector (OSTI)

This paper presents the averaged state-space modeling and controller synthesis methodology for the cascaded H-bridge multilevel active power filters (CHB-APFs). ... compensation and dc-link stabilization among th...

Yang Han; Lin Xu; Muhammad Mansoor Khan; Chen Chen

2011-06-01T23:59:59.000Z

209

Experimental investigation of factors controlling the calcium carbonate ion activity product of shallow water carbonate-rich sediments  

E-Print Network [OSTI]

EXPERIMENTAL INVESTIGATION OF FACTORS CONTROLLING THE CALCIUM CARBONATE ION ACTIVITY PRODUCT OF SHALLOW WATER CARBONATE-RICH SEDIMENTS A Thesis by LAWRENCE DOUGLAS BERNSTEIN Submitted to the Graduate College of Texas A&M University... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1983 Major Subject: Oceanography EXPERIMENTAL INVESTIGATION OF FACTORS CONTROLLING THE CALCIUM CARBONATE ION ACTIVITY PRODUCT OF SHALLOW WATER CARBONATE...

Bernstein, Lawrence Douglas

1983-01-01T23:59:59.000Z

210

System and method of active vibration control for an electro-mechanically cooled device  

DOE Patents [OSTI]

A system and method of active vibration control of an electro-mechanically cooled device is disclosed. A cryogenic cooling system is located within an environment. The cooling system is characterized by a vibration transfer function, which requires vibration transfer function coefficients. A vibration controller generates the vibration transfer function coefficients in response to various triggering events. The environments may differ by mounting apparatus, by proximity to vibration generating devices, or by temperature. The triggering event may be powering on the cooling system, reaching an operating temperature, or a reset action. A counterbalance responds to a drive signal generated by the vibration controller, based on the vibration signal and the vibration transfer function, which adjusts vibrations. The method first places a cryogenic cooling system within a first environment and then generates a first set of vibration transfer function coefficients, for a vibration transfer function of the cooling system. Next, the cryogenic cooling system is placed within a second environment and a second set of vibration transfer function coefficients are generated. Then, a counterbalance is driven, based on the vibration transfer function, to reduce vibrations received by a vibration sensitive element.

Lavietes, Anthony D. (Hayward, CA); Mauger, Joseph (Livermore, CA); Anderson, Eric H. (Mountain View, CA)

2000-01-01T23:59:59.000Z

211

activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Detecting Things We Cannot See: Learning the Concepts of Control and Detecting Things We Cannot See: Learning the Concepts of Control and Variable in an Experiment Submitted by Anita Brook-Dupree, 1996 TRAC teacher at Fermilab, Teacher, Alternative Middle Years School, Philadelphia, PA. Particle physicists at Fermilab in Batavia, Illinois are faced with the problem of detecting the presence of sub-atomic particles they cannot see. During my summer as a TRAC teacher at Fermilab, I tried to think of ways to teach middle school students about things we cannot see. I want to thank my nine-year-old daughter Gia for the idea for the following activity. I was lamenting that I could not come up with ideas of how to relate the work of Fermilab scientists to anything that my students would understand. Then I was reminded by my daughter, that when I brought her to school on the

212

Sandia Site Office Assessment of Activity-Levell Work Planning and Control at Sandia National Laboratories/New Mexico  

Broader source: Energy.gov (indexed) [DOE]

SNL-2011-02-18 SNL-2011-02-18 Site: Sandia National Laboratories (SNL) Subject: Office of Independent Oversight's Office of Environment, Safety and Health Evaluations Independent Activity Report for the Sandia Site Office Assessment of Activity-Level Work Planning and Control at Sandia National Laboratories /New Mexico (SNL) Dates of Activity : 02/14/2011 - 02/18/2011 Report Preparer: Patricia Williams Activity Description/Purpose: At the request of the Sandia Site Office (SSO), the Office of Environment, Safety and Health Evaluations (HS-64) personnel participated in an SSO assessment of SNL's Activity-Level Work Planning and Control processes, procedures, and implementation by line organizations, including feedback and improvement activities and efforts to sustain the

213

Predictive Optimal Control of Active and Passive Building Thermal Storage Inventory  

SciTech Connect (OSTI)

Cooling of commercial buildings contributes significantly to the peak demand placed on an electrical utility grid. Time-of-use electricity rates encourage shifting of electrical loads to off-peak periods at night and weekends. Buildings can respond to these pricing signals by shifting cooling-related thermal loads either by precooling the building's massive structure or the use of active thermal energy storage systems such as ice storage. While these two thermal batteries have been engaged separately in the past, this project investigated the merits of harnessing both storage media concurrently in the context of predictive optimal control. To pursue the analysis, modeling, and simulation research of Phase 1, two separate simulation environments were developed. Based on the new dynamic building simulation program EnergyPlus, a utility rate module, two thermal energy storage models were added. Also, a sequential optimization approach to the cost minimization problem using direct search, gradient-based, and dynamic programming methods was incorporated. The objective function was the total utility bill including the cost of reheat and a time-of-use electricity rate either with or without demand charges. An alternative simulation environment based on TRNSYS and Matlab was developed to allow for comparison and cross-validation with EnergyPlus. The initial evaluation of the theoretical potential of the combined optimal control assumed perfect weather prediction and match between the building model and the actual building counterpart. The analysis showed that the combined utilization leads to cost savings that is significantly greater than either storage but less than the sum of the individual savings. The findings reveal that the cooling-related on-peak electrical demand of commercial buildings can be considerably reduced. A subsequent analysis of the impact of forecasting uncertainty in the required short-term weather forecasts determined that it takes only very simple short-term prediction models to realize almost all of the theoretical potential of this control strategy. Further work evaluated the impact of modeling accuracy on the model-based closed-loop predictive optimal controller to minimize utility cost. The following guidelines have been derived: For an internal heat gain dominated commercial building, reasonable geometry simplifications are acceptable without a loss of cost savings potential. In fact, zoning simplification may improve optimizer performance and save computation time. The mass of the internal structure did not show a strong effect on the optimization. Building construction characteristics were found to impact building passive thermal storage capacity. It is thus advisable to make sure the construction material is well modeled. Zone temperature setpoint profiles and TES performance are strongly affected by mismatches in internal heat gains, especially when they are underestimated. Since they are a key factor in determining the building cooling load, efforts should be made to keep the internal gain mismatch as small as possible. Efficiencies of the building energy systems affect both zone temperature setpoints and active TES operation because of the coupling of the base chiller for building precooling and the icemaking TES chiller. Relative efficiencies of the base and TES chillers will determine the balance of operation of the two chillers. The impact of mismatch in this category may be significant. Next, a parametric analysis was conducted to assess the effects of building mass, utility rate, building location and season, thermal comfort, central plant capacities, and an economizer on the cost saving performance of optimal control for active and passive building thermal storage inventory. The key findings are: (1) Heavy-mass buildings, strong-incentive time-of-use electrical utility rates, and large on-peak cooling loads will likely lead to attractive savings resulting from optimal combined thermal storage control. (2) By using economizer to take advantage of the cool fresh air during the night, the bu

Gregor P. Henze; Moncef Krarti

2005-09-30T23:59:59.000Z

214

Voltage/Pitch Control for Maximization and Regulation of Active/Reactive Powers in Wind Turbines with Uncertainties  

E-Print Network [OSTI]

This paper addresses the problem of controlling a variable-speed wind turbine with a Doubly Fed Induction Generator (DFIG), modeled as an electromechanically-coupled nonlinear system with rotor voltages and blade pitch angle as its inputs, active and reactive powers as its outputs, and most of the aerodynamic and mechanical parameters as its uncertainties. Using a blend of linear and nonlinear control strategies (including feedback linearization, pole placement, uncertainty estimation, and gradient-based potential function minimization) as well as time-scale separation in the dynamics, we develop a controller that is capable of maximizing the active power in the Maximum Power Tracking (MPT) mode, regulating the active power in the Power Regulation (PR) mode, seamlessly switching between the two modes, and simultaneously adjusting the reactive power to achieve a desired power factor. The controller consists of four cascaded components, uses realistic feedback signals, and operates without knowledge of the C_p-...

Guo, Yi; Jiang, John N; Tang, Choon Yik; Ramakumar, Rama G

2010-01-01T23:59:59.000Z

215

Hanford Activity Report for Specific Administrative Controls with EM at ORP, December 6-10, 2010  

Broader source: Energy.gov (indexed) [DOE]

Office of Independent Oversight's Office of Environment, Safety and Health Office of Independent Oversight's Office of Environment, Safety and Health Evaluations Activity Report on its Participation in a Review of Selected Aspects of Nuclear Safety at the Hanford Site Tank Farms, December 6-10, 2010 The U.S. Department of Energy Office of Independent Oversight, within the Office of Health, Safety and Security, participated in an Office of Environmental Management Office of Standards and Quality Assurance, EM-23, review of Specific Administrative Controls (SAC). The EM-23 review included selected Office of River Protection programs at the Hanford Site. During the review, Independent Oversight personnel reviewed a few of the SACs applicable to the Tank Farms, which are under the auspices of the Office of River Protection. The results of the review

216

Nuclear Rocket Test Facility Decommissioning Including Controlled Explosive Demolition of a Neutron-Activated Shield Wall  

SciTech Connect (OSTI)

Located in Area 25 of the Nevada Test Site, the Test Cell A Facility was used in the 1960s for the testing of nuclear rocket engines, as part of the Nuclear Rocket Development Program. The facility was decontaminated and decommissioned (D&D) in 2005 using the Streamlined Approach For Environmental Restoration (SAFER) process, under the Federal Facilities Agreement and Consent Order (FFACO). Utilities and process piping were verified void of contents, hazardous materials were removed, concrete with removable contamination decontaminated, large sections mechanically demolished, and the remaining five-foot, five-inch thick radiologically-activated reinforced concrete shield wall demolished using open-air controlled explosive demolition (CED). CED of the shield wall was closely monitored and resulted in no radiological exposure or atmospheric release.

Michael Kruzic

2007-09-01T23:59:59.000Z

217

Electronic Activation At Oxide Hetero-structure At Elevated Temperatures Source Of Markedly Accelerated Oxygen Reduction Kinetics  

E-Print Network [OSTI]

performance. Therefore, it is needed to synthesize cathode materials with high oxygen reduction activity activity and ionic conductivity give a promising alternative approach to achieve high-performance cathodes, based on such understanding, we aim to design novel oxide hetero-structure as highly active cathode

Yildiz, Bilge

218

Pilot Implementation of a Field Study Design to Evaluate the Impact of Source Control Measures on Indoor Air Quality in High Performance Homes  

SciTech Connect (OSTI)

To improve the indoor air quality in new, high performance homes, a variety of standards and rating programs have been introduced to identify building materials that are designed to have lower emission rates of key contaminants of concern and a number of building materials are being introduced that are certified to these standards. For example, the U.S. Department of Energy (DOE) Zero Energy Ready Home program requires certification under the U.S. Environmental Protection Agency (EPA) Indoor airPLUS (IaP) label, which requires the use of PS1 or PS2 certified plywood and OSB; low-formaldehyde emitting wood products; low- or no-VOC paints and coatings as certified by Green Seal Standard GS-11, GreenGuard, SCS Indoor Advantage Gold Standard, MPI Green Performance Standard, or another third party rating program; and Green Label-certified carpet and carpet cushions. However, little is known regarding the efficacy of the IAP requirements in measurably reducing contaminant exposures in homes. The goal of this project is to develop a robust experimental approach and collect preliminary data to support the evaluation of indoor air quality (IAQ) measures linked to IAP-approved low-emitting materials and finishes in new residential homes. To this end, the research team of Pacific Northwest National Laboratory (PNNL) and Lawrence Berkeley National Laboratory (LBNL) developed a detailed experimental plan to measure IAQ constituents and other parameters, over time, in new homes constructed with materials compliant with IAPs low-emitting material and ventilation requirements (i.e., section 6.1, 6.2, 6.3, and 7.2) and similar homes constructed to the state building code with conventional materials. The IAQ in IAP and conventional homes of similar age, location, and construction style is quantified as the differences in the speciated VOC and aldehyde concentrations, normalized to dilution rates. The experimental plan consists of methods to evaluate the difference between low-emitting and conventional materials as installed in newly constructed residential homes using both (1) highly controlled, short-term active samples to precisely characterize the building-related chemical emissions and building contents and (2) a week-long passive sample designed to capture the impact of occupant behavior and related activities on measured IAQ contaminant levels indoors. The combination of detailed short-term measurements with the home under controlled/consistent conditions during pre- and post-occupancy and the week-long passive sampling data provide the opportunity to begin to separate the different emission sources and help isolate and quantify variability in the monitored homes. Between April and August 2014, the research team performed pre-occupancy and post-occupancy sampling in one conventional home and two homes built with low-emitting materials that were generally consistent with EPAs Indoor airPLUS guidelines. However, for a number of reasons, the full experimental plan was not implemented. The project was intended to continue for up to three years to asses long-term changes in IAQ but the project was limited to one calendar year. As a result, several of the primary research questions related to seasonal impacts and the long-term trends in IAQ could not be addressed. In addition, there were several unexpected issues related to recruiting, availability of home types, and difficulty coordinating with builders/realtors/homeowners. Several field monitoring issues also came up that provide lessons learned that led to improvements to the original monitoring plan. The project produced a good experimental plan that is expected to be be useful for future efforts collecting data to support answering these same or similar research questions.

Widder, Sarah H.; Chamness, Michele A.; Petersen, Joseph M.; Singer, Brett C.; Maddalena, Randy L.; Destaillats, Hugo

2014-10-20T23:59:59.000Z

219

Preparation of Ag{sub 2}S-Graphene nanocomposite from a single source precursor and its surface-enhanced Raman scattering and photoluminescent activity  

SciTech Connect (OSTI)

Ag{sub 2}S-Graphene nanocomposite was prepared via a relatively facile hydrothermal method, using a single-source molecular (silver diethyldithiocarbamate [Ag(DDTC)]) as precursor and graphene sheets as a support material. The composite was characterized by X-ray power diffraction, X-ray photoelectron spectroscopy, Field-emission scanning electron microscope, transmission electron microscopy, Fourier transform infrared, Raman spectra and fluorescence spectroscopy. The experimental results show that the Ag{sub 2}S-Graphene nanocomposite displays surface-enhanced Raman scattering (SERS) activity for graphene oxide and reveals relatively better fluorescence property compared with pure Ag{sub 2}S. Highlights: {yields} Ag{sub 2}S nanoparticles are deposited on graphene sheets via a single source precursor. {yields} Graphene oxide is reduced to graphene in the hydrothermal reaction process. {yields} Ag{sub 2}S-Graphene system displays surface-enhanced Raman scattering activity and relatively better fluorescence property.

Pan Shugang; Liu Xiaoheng, E-mail: xhliu@mail.njust.edu.cn; Wang Xin

2011-11-15T23:59:59.000Z

220

ACTIVE SUSPENSION CONTROL WITH DIRECT-DRIVE TUBULAR LINEAR BRUSHLESS PERMANENT-MAGNET MOTOR  

E-Print Network [OSTI]

membership functions were introduced. This controller could attenuate road disturbance by up to 78%. Additionally, a sliding-mode controller (SMC) is developed with a different approach from the other three control methodologies. While SMC is developed...

Lee, Seungho

2010-01-16T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

A charging control strategy for active building-integrated thermal energy storage systems using frequency domain modeling  

Science Journals Connector (OSTI)

Abstract Primary space conditioning can be provided through active building-integrated thermal energy storage (BITES) systems, such as radiant space heating through concrete slabs. This approach can reduce peak space conditioning demand and energy costs while satisfying thermal comfort. However, thermal charging rates need to be predictively controlled due to the slow thermal response of BITES systems. This paper presents a charge control strategy using frequency domain models and room air temperature set-point profile as input. The models were previously verified with full-scale experiment data. The calculation procedures are demonstrated on active BITES systems with and without airflow to zone. Results show that the calculated charging rates satisfy the desired room air temperature set-point profiles. This control strategy is important for integrating the design and operation of active BITES systems because frequency domain models also provide important design information.

Yuxiang Chen; Andreas K. Athienitis; Khaled E. Galal

2014-01-01T23:59:59.000Z

222

Cryogenic hydrogen circulation system of neutron source  

SciTech Connect (OSTI)

Cold neutron sources of reactors and spallation neutron sources are classic high flux neutron sources in operation all over the world. Cryogenic fluids such as supercritical or supercooled hydrogen are commonly selected as a moderator to absorb the nuclear heating from proton beams. By comparing supercritical hydrogen circulation systems and supercooled hydrogen circulation systems, the merits and drawbacks in both systems are summarized. When supercritical hydrogen circulates as the moderator, severe pressure fluctuations caused by temperature changes will occur. The pressure control system used to balance the system pressure, which consists of a heater as an active controller for thermal compensation and an accumulator as a passive volume controller, is preliminarily studied. The results may provide guidelines for design and operation of other cryogenic hydrogen system for neutron sources under construction.

Qiu, Y. N. [Institute of Physics and Chemistry, Chinese Academy of Sciences, BJ100190 China and University of Chinese Academy of Sciences, Chinese Academy of Sciences, BJ100049 (China); Hu, Z. J.; Wu, J. H.; Li, Q.; Zhang, Y. [Institute of Physics and Chemistry, Chinese Academy of Sciences, BJ100190 (China); Zhang, P. [School of Energy and Power Engineering, HuaZhong University of Science and Technology, WH430074 (China); Wang, G. P. [Institute of High Energy Physics, Chinese Academy of Sciences, BJ100049 (China)

2014-01-29T23:59:59.000Z

223

Electrical resistivity structure of the Valu Fa Ridge, Lau Basin, from marine controlled-source electromagnetic sounding  

E-Print Network [OSTI]

Electrical resistivity structure of the Valu Fa Ridge, Lau Basin, from marine controlled itself. Key words: electrical resistivity, electromagnetic survey, mid-ocean ridge, Valu Fa Ridge. I N depends strongly on, among other things, porosity and crack geometry. In contrast, electrical resistivity

Constable, Steve

224

Lesson Learned by Savannah River Site Activity-level Work Planning and Control  

Broader source: Energy.gov [DOE]

Slide Presentation by Bonnie Barnes, Savannah River Remediation. Work Planning and Control at Savannah River Remediation.

225

E-Print Network 3.0 - active eph controls Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

adhesion. Interaction between ephrins and Eph receptors can also activate the ligand (Brueckner et... growth In vertebrates activation of Eph receptors in axonal growth cones is...

226

Design and analysis of active vibration control in a microgravity environment  

E-Print Network [OSTI]

to investigate payload responses to disturbances that will most likely be present in the Space Station. Experiments were conducted first with the cart constrained to move in one dimension (one degree-of- freedom), and then with the cart having planar motion... Previous Research. Present Research III DYNAMIC MODELING. One-Dimensional Motion. Planar Motion. 6 10 IV CONTROL METHODS. 19 Position Control Velocity Control Displacement Control Combinational Control Pulse Width Modulation. 19 20 21 21 24...

Atwood, Clay Brian

2012-06-07T23:59:59.000Z

227

Electrical resistivity structure of the Valu Fa Ridge, Lau Basin, from marine controlled-source electromagnetic sounding  

Science Journals Connector (OSTI)

......Basin is a small back-arc basin, separating the...the active Tofua Island Arc ( Fig.1). It is thought...west of the Tofua Island Arc.-Spreading has been...position of the ridge axis. Electric field receiver locations...extensive low-temperature discharge related to the high permeability......

Lucy MacGregor; Martin Sinha; Steven Constable

2001-07-01T23:59:59.000Z

228

A quantum dot single-photon source with on-the-fly all-optical polarization control and timed emission  

E-Print Network [OSTI]

Sources of single photons are key elements in the study of basic quantum optical concepts and applications in quantum information science. Among the different sources available, semiconductor quantum dots excel with their straight forward integrability in semiconductor based on-chip solutions and the potential that photon emission can be triggered on demand. Usually, the photon emission event is part of a cascaded biexciton-exciton emission scheme. Important properties of the emitted photon such as polarization and time of emission are either probabilistic in nature or pre-determined by electronic properties of the system. In this work, we study the direct two-photon emission from the biexciton. We show that emission through this higher-order transition provides a much more versatile approach to generate a single photon. In the scheme we propose, the two-photon emission from the biexciton is enabled by a laser field (or laser pulse) driving the system into a virtual state inside the band gap. From this interm...

Heinze, Dirk; Schumacher, Stefan

2014-01-01T23:59:59.000Z

229

Toward Active-Matrix Lab-On-A-Chip: Programmable Electrofluidic control Enaled by Arrayed Oxide Thin Film Transistors  

SciTech Connect (OSTI)

Agile micro- and nano-fluidic control is critical to numerous life science and chemical science synthesis as well as kinetic and thermodynamic studies. To this end, we have demonstrated the use of thin film transistor arrays as an active matrix addressing method to control an electrofluidic array. Because the active matrix method minimizes the number of control lines necessary (m + n lines for the m x n element array), the active matrix addressing method integrated with an electrofluidic platform can be a significant breakthrough for complex electrofluidic arrays (increased size or resolution) with enhanced function, agility and programmability. An amorphous indium gallium zinc oxide (a-IGZO) semiconductor active layer is used because of its high mobility of 1-15 cm{sup 2} V{sup -1} s{sup -1}, low-temperature processing and transparency for potential spectroscopy and imaging. Several electrofluidic functionalities are demonstrated using a simple 2 x 5 electrode array connected to a 2 x 5 IGZO thin film transistor array with the semiconductor channel width of 50 {mu}m and mobility of 6.3 cm{sup 2} V{sup -1} s{sup -1}. Additionally, using the TFT device characteristics, active matrix addressing schemes are discussed as the geometry of the electrode array can be tailored to act as a storage capacitor element. Finally, requisite material and device parameters are discussed in context with a VGA scale active matrix addressed electrofluidic platform.

Noh, Joo Hyon [University of Tennessee, Knoxville (UTK); Noh, Jiyong [University of Tennessee, Knoxville (UTK); Kreit, Eric [University of Cincinnati; Heikenfeld, Jason [University of Cincinnati; Rack, Philip D [ORNL

2012-01-01T23:59:59.000Z

230

Active beam position stabilization of pulsed lasers for long-distance ion profile diagnostics at the Spallation Neutron Source (SNS)  

SciTech Connect (OSTI)

A high peak-power Q-switched laser has been used to monitor the ion beam profiles in the superconducting linac at the Spallation Neutron Source (SNS). The laser beam suffers from position drift due to movement, vibration, or thermal effects on the optical components in the 250-meter long laser beam transport line. We have designed, bench-tested, and implemented a beam position stabilization system by using an Ethernet CMOS camera, computer image processing and analysis, and a piezo-driven mirror platform. The system can respond at frequencies up to 30 Hz with a high position detection accuracy. With the beam stabilization system, we have achieved a laser beam pointing stability within a range of 2 rad (horizontal) to 4 rad (vertical), corresponding to beam drifts of only 0.5 mm 1 mm at the furthest measurement station located 250 meters away from the light source.

Hardin, Robert A [ORNL; Liu, Yun [ORNL; Long, Cary D [ORNL; Aleksandrov, Alexander V [ORNL; Blokland, Willem [ORNL

2011-01-01T23:59:59.000Z

231

Superfund record of decision (EPA Region 1): Fort Devens Sudbury Training Annex, source control operable unit, Middlesex County, MA, September 29, 1995  

SciTech Connect (OSTI)

This Record of Decision (ROD) document presents the selected source control (SC) remedial action at areas of contamination (AOCs) A7 and A9 at the Fort Devens Sudbury Training Annex (Annex), Middlesex County, Massachusetts. The major components of the selected remedy for AOCs A7 and A9 include: Excavation and off-site treatment and disposal of laboratory waste at AOC A7; Excavation of contaminated soil from AOC A9 and consolidation at AOC A7; Consolidation of contaminated soil and solid waste at AOC A7 to within the limits of the landfill cap; Construction of a Resource Conservation and Recovery Act (RCRA) Subtitle C landfill cap at AOC A7; Environmental monitoring and operation and maintenance (O&M) at AOC A7; Institutional controls at AOC A7 to limit future site use and to restrict site access; and Five-year reviews at AOC A7.

NONE

1996-03-01T23:59:59.000Z

232

Design and Development of a Nanoscale Multi Probe System Using Open Source SPM Controller and GXSM Software: A Tool of Nanotechnology  

E-Print Network [OSTI]

We report our design, development, installation and troubleshooting of an open source Gnome X Scanning Microscopy (GXSM) software package for controlling and processing of modern Scanning Probe Microscopy (SPM) system as a development tool of Nanotechnology. GXSM is a full featured analysis tool for the characterization of nanomaterials with different controlling tools like Atomic Force Microscopy (AFM), Scanning Tunneling Spectroscopy (STS), scanning tunneling microscopy (STM), Nanoindentation and etc.,. This developed package tool consists of Digital Signal Processing (DSP) and image processing system of SPM. A digital signal processor (DSP) subsystem runs the feedback loop, generates the scanning signals and acquires the data during SPM measurements. With installed SR-Hwl plug-in this developed package was tested in no hardware mode.

Babu, S K Suresh; Moni, D Jackuline; Devaprakasam, D

2014-01-01T23:59:59.000Z

233

U-081: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets Remote Users Execute  

Broader source: Energy.gov (indexed) [DOE]

1: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets Remote Users 1: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets Remote Users Execute Arbitrary Code U-081: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets Remote Users Execute Arbitrary Code January 13, 2012 - 9:15am Addthis PROBLEM: McAfee SaaS 'myCIOScn.dll' ActiveX Control Lets Remote Users Execute Arbitrary Code PLATFORM: McAfee ABSTRACT: A remote user can create HTML that, when loaded by the target user, will execute arbitrary code on the target user's system. reference LINKS: SecurityTracker Alert ID: 1026513 Zero Day Initiative ZDI-12-012 McAfee Threat Intelligence IMPACT ASSESSMENT: High Discussion: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of McAfee Security-as-a-Service. User interaction is required to exploit this vulnerability in that the target must visit a

234

Independent Oversight Review of the Savannah River Field Office Tritium Facilities Radiological Controls Activity-Level Implementation, November 2013  

Broader source: Energy.gov (indexed) [DOE]

of the of the Savannah River Field Office Tritium Facilities Radiological Controls Activity-Level Implementation May 2011 November 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 1

235

Independent Oversight Targeted Review of Activity-Level Implementation of Radiological Controls at Sandia National Laboratories, November 2013  

Broader source: Energy.gov (indexed) [DOE]

Targeted Review of Targeted Review of Activity-Level Implementation of Radiological Controls at Sandia National Laboratories May 2011 November 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 2

236

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution, January 2013  

Broader source: Energy.gov (indexed) [DOE]

Review of the Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution January 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1

237

This report briefly describes teaching and research activities at the Automation and Control Institute (ACI) during 1.7.2003 -  

E-Print Network [OSTI]

SUMMARY This report briefly describes teaching and research activities at the Automation in automation are other issues studied in the laboratory. New areas are UML- based methods for automation abnormal situation handling. Parts of this report and other information about Automation and Control

238

Functional link artificial neural network applied to active noise control of a mixture of tonal and chaotic noise  

Science Journals Connector (OSTI)

Many practical noises emanating from rotating machines with blades generate a mixture of tonal and the chaotic noise. The tonal component is related to the rotational speed of the machine and the chaotic component is related to the interaction of the ... Keywords: Active noise control (ANC), Chaotic noise, Functional link artificial neural network (FLANN), Hybrid ANC, Narrowband ANC

Santosh Kumar Behera, Debi Prasad Das, Bidyadhar Subudhi

2014-10-01T23:59:59.000Z

239

Direct power control of shunt active filter using high selectivity filter (HSF) under distorted or unbalanced conditions  

E-Print Network [OSTI]

.A. Djaffar) Abstract This paper describes the design of a new configuration of direct power control (DPC inverter voltage vector in order to minimize instantaneous active and reactive power errors using two powers by selecting the optimal switching states of the inverter. Simulation results have proved

Paris-Sud XI, Université de

240

Apparatus and process for active pulse intensity control of laser beam  

DOE Patents [OSTI]

An optically controlled laser pulse energy control apparatus and process is disclosed wherein variations in the energy of a portion of the laser beam are used to vary the resistance of a photodetector such as a photoresistor through which a control voltage is fed to a light intensity controlling device through which a second portion of the laser beam passes. Light attenuation means are provided to vary the intensity of the laser light used to control the resistance of the photodetector. An optical delay path is provided through which the second portion of the beam travels before reaching the light intensity controlling device. The control voltage is supplied by a variable power supply. The apparatus may be tuned to properly attenuate the laser beam passing through the intensity controlling device by adjusting the power supply, the optical delay path, or the light attenuating means.

Wilcox, Russell B. (Oakland, CA)

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Active Diesel Emission Control Technology for Sub-50 HP Engines with Low Exhaust Temperature Profiles  

Broader source: Energy.gov [DOE]

A new type of emission control technology was presented for the small engines used in APU's and TRU's.

242

Respiratory Motion of The Heart and Positional Reproducibility Under Active Breathing Control  

SciTech Connect (OSTI)

Purpose: To reduce cardiotoxicity from breast radiotherapy (RT), innovative techniques are under investigation. Information about cardiac motion with respiration and positional reproducibility under active breathing control (ABC) is necessary to evaluate these techniques. Methods and Materials: Patients requiring loco-regional RT for breast cancer were scanned by computed tomography using an ABC device at various breath-hold states, before and during treatment. Ten patients were studied. For each patient, 12 datasets were analyzed. Mutual information-based regional rigid alignment was used to determine the magnitude and reproducibility of cardiac motion as a function of breathing state. For each scan session, motion was quantified by evaluating the displacement of a point along the left anterior descending artery (LAD) with respect to its position at end expiration. Long-term positional reproducibility was also assessed. Results: Displacement of the LAD was greatest in the inferior direction, moderate in the anterior direction, and lowest in the left-right direction. At shallow breathing states, the average displacement of LAD position was up to 6 mm in the inferior direction. The maximum displacement in any patient was 2.8 cm in the inferior direction, between expiration and deep-inspiration breath hold. At end expiration, the long-term reproducibility (SD) of the LAD position was 3 mm in the A-P, 6 mm in the S-I, and 4 mm in the L-R directions. At deep-inspiration breath hold, long-term reproducibility was 3 mm in the A-P, 7 mm in the S-I, and 3 mm in the L-R directions. Conclusions: These data demonstrate the extent of LAD displacement that occurs with shallow breathing and with deep-inspiration breath hold. This information may guide optimization studies considering the effects of respiratory motion and reproducibility of cardiac position on cardiac dose, both with and without ABC.

Jagsi, Reshma [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Moran, Jean M. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Kessler, Marc L. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Marsh, Robin B. C [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Balter, James M. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States); Pierce, Lori J. [Department of Radiation Oncology, University of Michigan, Ann Arbor, MI (United States)]. E-mail: ljpierce@umich.edu

2007-05-01T23:59:59.000Z

243

Design of Predictive Control Strategies for Active BITIES Systems Using Frequency Domain Models  

E-Print Network [OSTI]

Active building-integrated thermal energy storage (BITES) systems, such as ventilated concrete slabs, are able to effectively store and release abundant of thermal energy to assist space conditioning. Since active BITES systems are strongly thermal...

Chen, Y.; Athienitis, A. K.; Gala, K. E.

2013-01-01T23:59:59.000Z

244

E-Print Network 3.0 - activated control rods Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

rod. It is a fractal structure like those found in a Levy-walk superdiffusive... the Boussinesq length exceeds the length of the rod. Consequently the ... Source: Mallouk, Thomas...

245

Active Vorticity Control in a Shear Flow Using a Flapping Foil  

E-Print Network [OSTI]

It is shown experimentally that free shear flows can be substantially altered through direct control of the large coherent vortices present in the flow.

Gopalkrishnan, R.

1994-01-01T23:59:59.000Z

246

COE Reductions through Active Aerodynamic Control of Rotor Aerodynamics and Geometry  

SciTech Connect (OSTI)

This study investigates potential cost of energy reductions that might be achieved by designing active systems to mitigate loads throughout the wind turbine system.

Griffin, D. A.; McCoy, T. J.

2008-12-01T23:59:59.000Z

247

Vertical Tail Buffeting Alleviation Using Piezoelectric Actuators - Some Results of the Actively Controlled Response Of Buffet-Affected Tails (ACROBAT) Program  

Science Journals Connector (OSTI)

A 1/6-scale F-18 wind-tunnel model was tested in the Transonic Dynamics Tunnel at the NASA Langley Research Center as part of the Actively Controlled Response of Buffet-Affected Tails (ACROBAT) program to assess the use of active controls in reducing ...

Moses Robert W.

1997-03-01T23:59:59.000Z

248

Sensitivity Analysis of Optimal Operation of an Activated Sludge Process Model for Economic Controlled Variable Selection  

E-Print Network [OSTI]

Sensitivity Analysis of Optimal Operation of an Activated Sludge Process Model for Economic operation conducted on an activated sludge process model based on the test-bed benchmark simulation model no structure that leads to optimal economic operation, while promptly rejecting disturbances at lower layers

Skogestad, Sigurd

249

Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution, January 2013  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Independent Oversight Review of the Independent Oversight Review of the Portsmouth Gaseous Diffusion Plant Work Planning and Control Activities Prior to Work Execution January 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose ................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background........................................................................................................................................... 1

250

Independent Oversight Review of the Los Alamos National Laboratory Radiological Controls Activity-Level Implementation, November 2013  

Broader source: Energy.gov (indexed) [DOE]

Los Alamos National Laboratory Los Alamos National Laboratory Radiological Controls Activity-Level Implementation May 2011 November 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 2 4.0 Methodology ....................................................................................................................................... 3

251

E-Print Network 3.0 - activity-induced microrna controls Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

C. elegans developmental timing. Cell 106, 23-34. Grosshans, H., Slack, F.J., 2002. Micro-RNAs... regulatory networks. The expression of individual genes can be controlled at...

252

Time dependent simulation of active flying height control of TFC sliders  

Science Journals Connector (OSTI)

Thermal Flying-height Control (TFC) sliders have been recently used to reduce flying height at the head disk interface and obtain more stable flying heights (Kurita et al. 2005; Song et al. 2007; Liu et al. 2008....

Pablo Antonio Salas; Uwe Boettcher; Frank E. Talke

2012-09-01T23:59:59.000Z

253

Reinforcement Learning for Active Length Control and Hysteresis Characterization of Shape Memory Alloys  

E-Print Network [OSTI]

in temperature-strain space, and uses a Reinforcement Learning algorithm called Sarsa to learn a near-optimal control policy and map the hysteretic region. The algorithm developed in simulation is then applied to an experimental apparatus...

Kirkpatrick, Kenton C.

2010-01-16T23:59:59.000Z

254

Epigenetic regulation of Delta-Like1 controls Notch1 activation in gastric cancer  

E-Print Network [OSTI]

The Notch signaling pathway drives proliferation, differentiation, apoptosis, cell fate, and maintenance of stem cells in several tissues. Aberrant activation of Notch signaling has been described in several tumours and ...

Piazzi, Giulia

255

Design and analysis of active fluid-and-cellular solid composites for controllable stiffness robotic elements  

E-Print Network [OSTI]

The purpose of this thesis is to investigate the use of a new class of materials for realizing soft robots. Specifically, meso-scale composites--composed of cellular solids impregnated with active fluids-were be designed ...

Cheng, Nadia G. (Nadia Gen San)

2009-01-01T23:59:59.000Z

256

Adaptive flying height modulation control of hybrid active slider with thermal and piezoelectric actuators  

Science Journals Connector (OSTI)

Hybrid active slider is an effective means to increase the storage density of hard disk, but its effectiveness is compromised by the flying height modulation (FHM), the bounding vibrations ... proposes an adaptiv...

L. Huang; G. Sheng; J. -Y. Chang

2013-09-01T23:59:59.000Z

257

Activities  

Broader source: Energy.gov [DOE]

Activities and events provide Residential Network members the opportunity to discuss similar needs and challenges, and to collectively identify effective strategies and useful resources.

258

Air Pollution Control Regulations: No.27 - Control of Nitrogen Oxide  

Broader source: Energy.gov (indexed) [DOE]

Air Pollution Control Regulations: No.27 - Control of Nitrogen Air Pollution Control Regulations: No.27 - Control of Nitrogen Oxide Emissions (Rhode Island) Air Pollution Control Regulations: No.27 - Control of Nitrogen Oxide Emissions (Rhode Island) < Back Eligibility Commercial Industrial Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Program Info State Rhode Island Program Type Environmental Regulations Provider Department of Environmental Management These regulations apply to stationary sources with the potential to emit 50 tons of nitrogen oxides (NOx) per year from all pollutant-emitting equipment or activities. The regulations describe possibilities for exemptions (i.e., for sources which have the potential to emit 50 tons but do not actually reach that level) and Reasonably Available Control

259

Method for Weight Control Engineering Management to Evaluate Single Engine Aircraft Weighing Activities  

E-Print Network [OSTI]

There is no greater task for a Weight Control Engineer than determining an aircrafts weight and center of gravity (CG). Although the concept of balance or CG is easy to grasp, calculating or measuring it for complex objects, such as an aircraft...

Brown, Patrick M.

2007-05-18T23:59:59.000Z

260

Active Control of Instabilities in Laminar BoundaryLayer Flow--Part I: An Overview  

E-Print Network [OSTI]

of the downstream wave which counter (cancel) the evolution of the upstream generated wave. Milling (1981) to generate traveling waves 180 o out of phase, Milling (1981) showed that a wave with a 0.6­percent amplitude resembled a wave shape. By using hot strips to generate and control traveling waves, Liep­ mann

Erlebacher, Gordon

Note: This page contains sample records for the topic "activity controlled source" 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

Design and optimization of a semi-active metacomposite for the control of acoustic interaction  

E-Print Network [OSTI]

by the French Research Agency under grant number NT09 - 617542. 1 Introduction The concept of metacomposite to vibration control through piezoelectric and smart materials. Specifically, shunted piezo- electric smart main nov- elty is then the design through full numerical analyses of a smart structure [7] with broad

Paris-Sud XI, Université de

262

A method for calculating active feedback system to control vertical position of plasma in a tokamak  

Science Journals Connector (OSTI)

In designing tokamaks, the maintenance of vertical stability of plasma is one of the most important problems. For this purpose systems of passive and active feedbacks are applied. The role of passive system consisting of a vacuum vessel and passive stabilizer ...

Nizami Gasilov

2006-08-01T23:59:59.000Z

263

Activity-level Work Planning and Control in the Hanford Site Worker Evaluation Tool  

Broader source: Energy.gov [DOE]

Slide Presentation by Ted Giltz, Volpentest HAMMER Federal Training Center. Hanford Site Worker Eligibility Tool, Verifying Activity-Level Worker Medical Clearance and Training. The Hanford Site Worker Eligibility Tool (HSWET) provides line management an easy to use tool to determine if workers are medically cleared and trained to perform work safely.

264

Use of delayed gamma rays for active non-destructive assay of 235U irradiated by pulsed neutron source (plasma focus)  

Science Journals Connector (OSTI)

Abstract A pulsed neutron source based on plasma focus device has been used for active interrogation and assay of 235U by monitoring its delayed high energy ?-rays. The method involves irradiation of fissile material by thermal neutrons obtained after moderation of a burst of neutrons emitted upon fusion of deuterium in plasma focus (PF) device. The delayed gamma rays emitted from the fissile material as a consequence of induced fission were detected by a large volume sodium iodide (NaI(Tl)) detector. The detector is coupled to a data acquisition system of 2k input size with 2k ADC conversion gain. Counting was carried out in pulse height analysis mode for time integrated counts up to 100s while the temporal profile of delayed gamma has been obtained by counting in multichannel scaling mode with dwell time of 50ms. To avoid the effect of passive (natural) and active (from surrounding materials) backgrounds, counts have been acquired for gamma energy between 3 and 10MeV. The lower limit of detection of 235U in the oxide samples with this set-up is estimated to be 14mg.

Sanjay Andola; Ram Niranjan; T.C. Kaushik; R.K. Rout; Ashwani Kumar; D.B. Paranjape; Pradeep Kumar; B.S. Tomar; K.L. Ramakumar; S.C. Gupta

2014-01-01T23:59:59.000Z

265

Observation of EHO in NSTX and Theoretical Study of its Active Control Using HHFW Antenna  

SciTech Connect (OSTI)

Two important topics in the tokamak ELM control, using the non-axisymmetric (3D) magnetic perturbations, are studied in NSTX and combined envisioning ELM control in the future NSTX-U operation: Experimental observations of the edge harmonic oscillation in NSTX (not necessarily the same as EHOs in DIII-D), and theoretical study of its external drive using the high harmonic fast wave (HHFW) antenna as a 3D field coil. Edge harmonic oscillations were observed particularly well in NSTX ELM-free operation with low n core modes, with various diagnostics confirming n = 4 ~#24; 6 edge-localized and coherent oscillations in 2 ~#24; 8kHz frequency range. These oscillations seem to have a favored operational window in rotational shear, similarly to EHOs in DIII-D QH modes . However, in NSTX, they are not observed to provide particle or impurity control, possibly due to their weak amplitudes, of a few mm displacements, as measured by reflectometry. The external drive of these modes has been proposed in NSTX, by utilizing audio-frequency currents in the HHFW antenna straps. Analysis shows that the HHFW straps can be optimized to maximize n = 4 ~#24; 6 while minimizing n = 1 ~#24; 3. Also, IPEC calculations show that the optimized configuration with only 1kAt current can produce comparable or larger displacements than the observed internal modes. If this optimized external drive can be constructively combined, or further resonated with the internal modes, the edge harmonic oscillations in NSTX may be able to produce sufficient particle control to modify ELMs.

J.-K. Park, et. al.

2013-01-14T23:59:59.000Z

266

Microgrids in active network managementPart I: Hierarchical control, energy storage, virtual power plants, and market participation  

Science Journals Connector (OSTI)

Abstract The microgrid concept has been closely investigated and implemented by numerous experts worldwide. The first part of this paper describes the principles of microgrid design, considering the operational concepts and requirements arising from participation in active network management. Over the last several years, efforts to standardize microgrids have been made, and it is in terms of these advances that the current paper proposes the application of IEC/ISO 62264 standards to microgrids and Virtual Power Plants, along with a comprehensive review of microgrids, including advanced control techniques, energy storage systems, and market participation in both island and grid-connection operation. Finally, control techniques and the principles of energy-storage systems are summarized in a comprehensive flowchart.

Omid Palizban; Kimmo Kauhaniemi; Josep M. Guerrero

2014-01-01T23:59:59.000Z

267

Doped LaFeO3 as SOFC Catalysts: Control of Oxygen Mobility Oxidation Activity  

SciTech Connect (OSTI)

The bulk structure and surface properties of Fe-based perovskite-type oxides with the formula La{sub 0.6}Sr{sub 0.4}Co{sub y}Fe{sub 1-y}O{sub 3-{delta}} for y = 0.1, 0.2, and 0.3 have been investigated. The properties were found to strongly depend upon Co content, temperature, and environment. The materials were selected due to their potential use as solid oxide fuel cell cathodes. The intermediate Co loading formed oxygen vacancies most easily and several other properties including oxidation activity and surface sites showed a similar non-linear trend. Trends are related to a possible transition in electronic structure. Activity for oxidation of methane, oxygen storage and chemical compatibility was shown to be superior to that of the La{sub 0.6}Sr{sub 0.4}MnO{sub 3}.

N Lakshminarayanan; J Kuhn; S Rykov; J Millet; U Ozkan; T Rao; J Smedley; E Wang; E Muller; et al.

2011-12-31T23:59:59.000Z

268

Active electron energy distribution function control in direct current discharge using an auxiliary electrode  

SciTech Connect (OSTI)

The electron energy distribution functions are studied in the low voltage dc discharge with a constriction, which is a diaphragm with an opening. The dc discharge glows in helium and is sustained by the electron current emitted from a heated cathode. We performed kinetic simulations of dc discharge characteristics and electron energy distribution functions for different gas pressures (0.8 Torr-4 Torr) and discharge current of 0.1 A. The results of these simulations indicate the ability to control the shape of the electron energy distribution functions by variation of the diaphragm opening radius.

Schweigert, I. V. [Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation) [Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation); George Washington University, Washington, DC 20052 (United States); Kaganovich, I. D. [Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States); Demidov, V. I. [West Virginia University, Morgantown, WV 26506 (United States) [West Virginia University, Morgantown, WV 26506 (United States); St. Petersburg State University, St. Petersburg (Russian Federation)

2013-10-15T23:59:59.000Z

269

FOSTERING MULTI-LATERAL COOPERATION BETWEEN THE GOVERNMENTS OF MEXICO, COLOMBIA, AND THE UNITED STATES TO ENHANCE THE PROTECTION OF HIGH-ACTIVITY RADIOACTIVE SOURCES  

SciTech Connect (OSTI)

The Global Threat Reduction Initiative (GTRI) reduces and protects vulnerable nuclear and radiological material located at civilian sites worldwide from sabotage, theft or diversion. The GTRI program has worked successfully with foreign countries to remove and protect nuclear and radioactive materials including high-activity sources used in medical, commercial, and research applications. There are many barriers to successful bilateral cooperation that must be overcome including language, preconceived perceptions, long distances, and different views on the threat and protection requirements. Successful cooperation is often based on relationships and building trusting relationships takes time. In the case of Mexico, GTRI first made contact in 2005. The project then lost momentum and stalled. At the same time, GTRIs cooperation with the Republic of Colombia was a resounding success resulting in the securing of forty sites; the consolidation of numerous disused/orphan sources at a secure national storage facility; and, the development of a comprehensive approach to security including, inter alia, training and sustainability. The government of Colombia also showcased this comprehensive approach to thirteen Central American and Caribbean countries at a GTRI regional security conference held in Panama in October 2004. Representatives from the Colombian government were aware of GTRIs interest in initiating cooperation with the Government of Mexico and to facilitate this cooperation, they offered to invite their Mexican counterparts to Colombia to observe its successful cooperation with GTRI. Shortly after that visit, the Government of Mexico agreed to move forward and requested that the cooperative efforts in Mexico be performed in a tripartite manner, leveraging the skills, experience, and resources of the Colombians. As a result, 22 of Mexicos largest radioactive sites have had security upgrades in place within 18 months of cooperation.

Butler, Nicholas; Watson, Erica E.; Wright, Kyle A.

2009-10-07T23:59:59.000Z

270

Dynamic Acoustic Control of Individual Optically Active Quantum Dot-like Emission Centers in Heterostructure Nanowires  

E-Print Network [OSTI]

We probe and control the optical properties of emission centers forming in radial het- erostructure GaAs-Al0.3Ga0.7As nanowires and show that these emitters, located in Al0.3Ga0.7As layers, can exhibit quantum-dot like characteristics. We employ a radio frequency surface acoustic wave to dynamically control their emission energy and occupancy state on a nanosec- ond timescale. In the spectral oscillations we identify unambiguous signatures arising from both the mechanical and electrical component of the surface acoustic wave. In addition, differ- ent emission lines of a single quantum dot exhibit pronounced anti-correlated intensity oscilla- tions during the acoustic cycle. These arise from a dynamically triggered carrier extraction out of the quantum dot to a continuum in the radial heterostructure. Using finite element modeling and Wentzel-Kramers-Brillouin theory we identify quantum tunneling as the underlying mech- anism. These simulation results quantitatively reproduce the observed switching and show th...

Wei, Matthias; Schlein, Florian J R; Heigl, Michael; Rudolph, Daniel; Morktter, Stefanie; Dblinger, Markus; Bichler, Max; Abstreiter, Gerhard; Finley, Jonathan J; Koblmller, Gregor; Wixforth, Achim; Krenner, Hubert J

2014-01-01T23:59:59.000Z

271

Status Update on Action 2c: Criteria Review and Approach Document (CRAD) for Performing Assessments of Activity-level Work Planning and Control  

Broader source: Energy.gov [DOE]

Slide Presentation by Bradley K. Davy, Director, Office of Worker Safety and Health Assistance, HS. Criteria Review and Approach Document (CRAD) for Performing Assessments of Activity- Level Work Planning and Control. DOE CRAD Development Approach.

272

Source Memory in Individuals with Subclinical Obsessive-Compulsive Symptoms  

E-Print Network [OSTI]

, bilateral ACC, parietal cortices, and cerebellum. A study by van de Heuvel (2005) compared 22 medication free patients with OCD and 22 healthy controls using an event-related fMRI version of the Tower of London Task. OCD patients performed... and low temporal functioning. Finally, in an event related fMRI study, prefrontal activity was 10 related more to source than item retrieval (Curran, DeBuse, Woroch, & Hirshman, 2006). These studies suggest dissociation between item and source...

Olson, Christy Ann

2009-03-30T23:59:59.000Z

273

Nuclear knowledge portal for supporting licensing and controlling nuclear activities in the Brazilian Nuclear Energy Commission  

Science Journals Connector (OSTI)

The knowledge economy is pivotal for moving the wealth and development of traditional industrial sectors ?? abundant in manual labour, raw materials and capital ?? to areas whose products, processes and services are rich in technology and knowledge. Even in research areas such as nuclear energy, where goods are based on high technology, the ability to transform information into knowledge, and knowledge into decisions and actions, is extremely important. Therefore, the value of products from these areas depends more and more on the degree of innovation, technology and intelligence incorporated by them. Thus, it has become increasingly important and relevant to acquire strategic knowledge and make it available to the organisation. Therefore, the objective of this paper is to present the construction of a Nuclear Knowledge Portal for aiding and streamlining the Licensing and Management activities of the CNEN.

E. Gomes; F. Braga

2005-01-01T23:59:59.000Z

274

Status Update on Action 2b: Revision of DOE G 226.1-2 with new Guidance for Activity-level Work Planning and Control  

Broader source: Energy.gov [DOE]

Slide Presentation by Roger Claycomb, Work Control Program Manager, DOE Idaho Operations Office. Strengthen guidance and formality associated with contractor implementation and Federal monitoring of activity-level WP&C. Develop a DOE Guide on Federal oversight and evaluation of the effectiveness of Activity-Level WP&C.

275

FOSTERING MULTI-LATERAL COOPERATION BETWEEN THE GOVERNMENTS OF DOMINICAN REPUBLIC, COLOMBIA, AND THE UNITED STATES TO ENHANCE THE PROTECTION OF HIGH-ACTIVITY RADIOACTIVE SOURCES  

SciTech Connect (OSTI)

The Global Threat Reduction Initiative (GTRI) reduces and protects vulnerable nuclear and radiological material located at civilian sites worldwide from sabotage, theft or diversion. The GTRI has worked successfully with foreign countries to remove and protect nuclear and radioactive materials including high-activity sources used in medical, commercial, and research applications. There are many barriers to successful bilateral cooperation that must be overcome including language, preconceived perceptions, long distances, and different views on the threat and protection requirements. Successful cooperation is often based on relationships and building trusting relationships takes time. In the case of Dominican Republic, the GTRI first received contact in 2008 from the Government of Dominican Republic. They requested cooperation that was similar to the tri-partite cooperation between Colombia, Mexico and the United States. Throughout the region it was widely known that the GTRIs cooperation with the Government of Colombia was a resounding success resulting in the securing of forty sites; the consolidation of numerous disused/orphan sources at a secure national storage facility; and, the development of a comprehensive approach to security including, inter alia, training and sustainability. The Government of Colombia also showcased this comprehensive approach to thirteen Central American and Caribbean countries at a GTRI regional security conference held in Panama in October 2004. In 2007, Colombia was an integral component of GTRI multi-lateral cooperation initiation in Mexico. As a result, twenty two of Mexicos largest radioactive sites have been upgraded in the past eighteen months. These two endeavors served as catalysts for cooperation opportunities in the Dominican Republic. Representatives from the Colombian government were aware of GTRIs interest in initiating cooperation with the Government of Dominican Republic and to facilitate this cooperation, they traveled to the Dominican Republic and provided briefings and presentations which demonstrated its successful cooperation with the GTRI. Shortly after that visit, the Government of Dominican Republic agreed to move forward and requested that the cooperative efforts in Dominican Republic be performed in a tripartite manner, leveraging the skills, experience, and resources of the Colombians, and the financial and technical support of the United States. As a result, two of Dominican Republics largest radioactive sites had security upgrades in place within 90 days of the cooperation visit in December 2008.

Butler, Nicholas; McCaw, Erica E.; Wright, Kyle A.; Medina, Maximo

2009-10-06T23:59:59.000Z

276

GKTC ACTIVITIES TO PROVIDE NUCLEAR MATERIAL PHYSICAL PROTECTION, CONTROL AND ACCOUNTING TRAINING FOR 2011-2012  

SciTech Connect (OSTI)

The GKTC was created at the Kyiv Institute of Nuclear Research as a result of collaborative efforts between the United States and Ukraine. The GKTC has been designated by the Ukrainian Government to provide the MPC&A training and methodological assistance to nuclear facilities and nuclear specialists. In 2010 the GKTC has conducted the planned assessment of training needs of Ukrainian MPC&A specialists. The objective of this work is to acquire the detailed information about the number of MPC&A specialists and guard personnel, who in the coming years should receive the further advanced training. As a result of the performed training needs evaluation the GKTC has determined that in the coming years a number of new training courses need to be developed. Some training courses are already in the process of development. Also taking into account the specific of activity on the guarding of nuclear facilities, GKTC has begun to develop the specialized training courses for the guarding unit personnel. The evaluation of needs of training of Ukrainian specialists on the physical protection shows that without the technical base of learning is not possible to satisfy the needs of Ukrainian facilities, in particular, the need for further training of specialists who maintains physical protection technical means, provides vulnerability assessment and testing of technical means. To increase the training effectiveness and create the basis for specialized training courses holding the GKTC is now working on the construction of an Interior (non-classified) Physical Protection Training Site. The objective of this site is to simulate the actual conditions of the nuclear facility PP system including the complex of engineering and technical means that will help the GKTC training course participants to consolidate the knowledge and gain the practical skills in the work with PP system engineering and technical means for more effective performance of their official duties. This paper briefly describes the practical efforts applied to the provision of physical protection specialists advanced training in Ukraine and real results on the way to implement such efforts in 2011-2012.

Romanova, Olena; Gavrilyuk, Victor I.; Kirischuk, Volodymyr; Gavrilyuk-Burakova, Anna; Diakov, Oleksii; Drapey, Sergiy; Proskurin, Dmitry; Dickman, Deborah A.; Ferguson, Ken

2011-10-01T23:59:59.000Z

277

Mobility of Source Zone Heavy Metals and Radionuclides: The Mixed Roles of Fermentative Activity on Fate and Transport of U and Cr. Final Report  

SciTech Connect (OSTI)

Various U. S. Department of Energy (DOE) low and medium-level radioactive waste sites contain mixtures of heavy metals, radionuclides and assorted organic materials. In addition, there are numerous sites around the world that are contaminated with a mixture of organic and inorganic contaminants. In most sites, over time, water infiltrates the wastes, and releases metals, radionuclides and other contaminants causing transport into the surrounding environment. We investigated the role of fermentative microorganisms in such sites that may control metal, radionuclide and organics migration from source zones. The project was initiated based on the following overarching hypothesis: Metals, radionuclides and other contaminants can be mobilized by infiltration of water into waste storage sites. Microbial communities of lignocellulose degrading and fermenting microorganisms present in the subsurface of contaminated DOE sites can significantly impact migration by directly reducing and immobilizing metals and radionuclides while degrading complex organic matter to low molecular weight organic compounds. These low molecular weight organic acids and alcohols can increase metal and radionuclide mobility by chelation (i.e., certain organic acids) or decrease mobility by stimulating respiratory metal reducing microorganisms. We demonstrated that fermentative organisms capable of affecting the fate of Cr6+, U6+ and trinitrotoluene can be isolated from organic-rich low level waste sites as well as from less organic rich subsurface environments. The mechanisms, pathways and extent of contaminant transformation depend on a variety of factors related to the type of organisms present, the aqueous chemistry as well as the geochemistry and mineralogy. This work provides observations and quantitative data across multiple scales that identify and predict the coupled effects of fermentative carbon and electron flow on the transport of radionuclides, heavy metals and organic contaminants in the subsurface; a primary concern of the DOE Environmental Remediation Science Division (ERSD) and Subsurface Geochemical Research (SBR) Program.

Gerlach, Robin [Montana State Univ., Bozeman, MT (United States); Peyton, Brent M. [Montana State Univ., Bozeman, MT (United States); Apel, William A. [Idaho National Lab., Idaho Falls, ID (United States)

2014-01-29T23:59:59.000Z

278

Structured design, consistency analysis and failure reasoning of business workflows with activity-control templates and causal ordering  

Science Journals Connector (OSTI)

The design, analysis, control and diagnosis of business workflows have been major challenges for enterprise information system designers. We propose a structured framework for workflow design, formal semantics, consistency analysis, execution automation and failure reasoning targeting E-commerce applications. A business workflow is modeled by using a visual tool named activity-control (AC) diagram. Frequently occurring business procedures are captured by the adoptions of reusable AC templates. With formally defined semantics by a combination of first-order logic and happen-before causal ordering in distributed system theory, workflow consistency can be mechanically analyzed at design time while failure reasoning can be applied at execution time for problem diagnosis. A completely specified model is automatically converted to a workflow by an iterative traversal algorithm that maps an AC diagram to an XML workflow specification which can then be executed automatically by an XML workflow engine. A failure reasoning and diagnosis algorithm is devised to find all possible causes of a failed execution when problems occur. Preliminary proof-of-concept implementation and evaluation results demonstrate the feasibility and effectiveness of our framework and techniques.

Shiow-yang Wu; Kuo-Chang Lin

2011-01-01T23:59:59.000Z

279

POWDERED ACTIVATED CARBON FROM NORTH DAKOTA LIGNITE: AN OPTION FOR DISINFECTION BY-PRODUCT CONTROL IN WATER TREATMENT PLANTS  

SciTech Connect (OSTI)

New federal drinking water regulations have been promulgated to restrict the levels of disinfection by-products (DBPs) in finished public water supplies. DBPs are suspected carcinogens and are formed when organic material is partially oxidized by disinfectants commonly used in the water treatment industry. Additional federal mandates are expected in the near future that will further affect public water suppliers with respect to DBPs. Powdered activated carbon (PAC) has traditionally been used by the water treatment industry for the removal of compounds contributing to taste and odor problems. PAC also has the potential to remove naturally occurring organic matter (NOM) from raw waters prior to disinfection, thus controlling the formation of regulated DBPs. Many small water systems are currently using PAC for taste and odor control and have the potential to use PAC for controlling DBPs. This project, a cooperative effort between the Energy & Environmental Research Center (EERC), the Grand Forks Water Treatment Plant, and the University of North Dakota Department of Civil Engineering, consists of several interrelated tasks. The objective of the research was to evaluate a cost-effective PAC produced from North Dakota lignite for removing NOM from water and reducing trihalomethane formation potential. The research approach was to develop a statistically valid testing protocol that can be used to compare dose-response relationships between North Dakota lignite-derived PAC and commercially available PAC products. A statistical analysis was performed to determine whether significant correlations exist between operating conditions, water properties, PAC properties, and dose-response behavior. Pertinent physical and chemical properties were also measured for each of the waters and each of the PACs.

Daniel J. Stepan; Thomas A. Moe; Melanie D. Hetland; Margaret L. Laumb

2001-06-01T23:59:59.000Z

280

Var Coordinated Control of DFIG Impact on Small Signal Stability of Power System  

Science Journals Connector (OSTI)

The wind farm based on Doubly Fed Induction Generator (DFIG) is built. Not only it can be as active power source to provide active power to network, but also as reactive power source to stabilize voltage or supply Var compensation (reactive power absorbed ... Keywords: Doubly Fed Induction Generator, Var coordinated control, low-frequency oscillation, small signal stability

Lei Wang; Hongjie Jia

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Abatement of Air Pollution: Control of Sulfur Dioxide Emissions from Power Plants and Other Large Stationary Sources of Air Pollution (Connecticut)  

Broader source: Energy.gov [DOE]

These regulations apply to fossil-fuel fired stationary sources which serve a generator with a nameplate capacity of 15 MW or more, or fossil-fuel fired boilers or indirect heat exchangers with a...

282

Contaminant Sources  

Science Journals Connector (OSTI)

Contaminant sources include almost every component in the manufacturing process: people, materials, processing equipment, and manufacturing environments. People can generate contaminating particles, gases, conden...

Alvin Lieberman

1992-01-01T23:59:59.000Z

283

Ion source  

DOE Patents [OSTI]

A magnetic filter for an ion source reduces the production of undesired ion species and improves the ion beam quality. High-energy ionizing electrons are confined by the magnetic filter to an ion source region, where the high-energy electrons ionize gas molecules. One embodiment of the magnetic filter uses permanent magnets oriented to establish a magnetic field transverse to the direction of travel of ions from the ion source region to the ion extraction region. In another embodiment, low energy 16 eV electrons are injected into the ion source to dissociate gas molecules and undesired ion species into desired ion species.

Leung, Ka-Ngo (Hercules, CA); Ehlers, Kenneth W. (Alamo, CA)

1984-01-01T23:59:59.000Z

284

Neutron flux and energy characterization of a plutonium-beryllium isotopic neutron source by Monte Carlo simulation with verification by neutron activation analysis.  

E-Print Network [OSTI]

??The purpose of this research was to characterize the neutron energy distribution and flux emitted from the UNLV plutonium-beryllium source, serial number MRC-N-W PuBe 453. (more)

Harvey, Zachary R

2010-01-01T23:59:59.000Z

285

Effects of nitrogen source and concentration upon glutamine synthetase and protease activity in the rumen bacterium Prevotella ruminicola strain B1 4  

E-Print Network [OSTI]

(mineral salts, essential volatile fatty acids, vitamin cofactors, 12 mM glucose, cysteine-HCL as a reductant and sodium carbonate) with variable amounts of ammonium chloride, pepticase or casein as the nitrogen source. The results indicated that when...

Kirk, James Michael

1995-01-01T23:59:59.000Z

286

Thermal Control & System Integration  

Broader source: Energy.gov [DOE]

The thermal control and system integration activity focuses on issues such as the integration of motor and power control technologies and the development of advanced thermal control technologies....

287

NGSI student activities in open source information analysis in support of the training program of the U.S. DOE laboratories for the entry into force of the additional protocol  

SciTech Connect (OSTI)

In 2008 a joint team from Los Alamos National Laboratory (LANL) and Brookhaven National Laboratory (BNL) consisting of specialists in training of IAEA inspectors in the use of complementary access activities formulated a training program to prepare the U.S. Doe laboratories for the entry into force of the Additional Protocol. As a major part of the support of the activity, LANL summer interns provided open source information analysis to the LANL-BNL mock inspection team. They were a part of the Next Generation Safeguards Initiative's (NGSI) summer intern program aimed at producing the next generation of safeguards specialists. This paper describes how they used open source information to 'backstop' the LANL-BNL team's effort to construct meaningful Additional Protocol Complementary Access training scenarios for each of the three DOE laboratories, Lawrence Livermore National Laboratory, Idaho National Laboratory, and Oak Ridge National Laboratory.

Sandoval, M Analisa [Los Alamos National Laboratory; Uribe, Eva C [Los Alamos National Laboratory; Sandoval, Marisa N [Los Alamos National Laboratory; Boyer, Brian D [Los Alamos National Laboratory; Stevens, Rebecca S [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

288

Application of TS-Fuzzy Controller for Active Power and DC Capacitor Voltage Control in DFIG-Based Wind Energy Conversion Systems  

Science Journals Connector (OSTI)

This chapter focuses on the implementation of the TS (Tagaki-Sugino) fuzzy controller for the Doubly Fed Induction Generator (DFIG) based wind generator. The conventional PI ... is compared with the TS fuzzy cont...

S. Mishra; Y. Mishra; Fangxing Li; Z. Y. Dong

2010-01-01T23:59:59.000Z

289

Competitive Sourcing  

Broader source: Energy.gov (indexed) [DOE]

COMPETITIVE SOURCING COMPETITIVE SOURCING ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ Report on Competitive Sourcing Results Fiscal Year 2006 May 2007 Executive Office of the President Office of Management and Budget TABLE OF CONTENTS Executive Summary ...................................................................................... 1 Introduction................................................................................................. 4 I. The big picture ......................................................................................... 4 II. How public-private competition was used in FY 2006 .................................... 6 A. Anticipated benefits from competition in FY 2006

290

A fuzzy logic supervisor for active and reactive power control of a variable speed wind energy conversion system associated to a flywheel storage system  

Science Journals Connector (OSTI)

In this paper, we propose a Wind Energy Conversion System (WECS) at variable speed using a Doubly Fed Induction Generator (DFIG) controlled on the rotor side through converters. A Flywheel Energy Storage System (FESS) is connected to the studied wind generator at the DC bus in order to evaluate its capacity to participate to the ancillary services. We study the improvement of the active and reactive power quality produced by the wind generator and its effect on the load voltage regulation connected to the wind generator. For that, a fuzzy logic supervisor is established to control the FESS operation and the DC bus voltage in order to smooth the active power fluctuations due to the random wind speed variations. A control law is also described to smooth the reactive power at the connection node to the grid.

Lilia Jerbi; Lotfi Krichen; Abderrazak Ouali

2009-01-01T23:59:59.000Z

291

Evaluation of a Current Source Active Power Filter to Reduce the DC Bus Capacitor in a Hybrid Electric Vehicle Traction Drive  

E-Print Network [OSTI]

Electric Vehicle Traction Drive Shengnan Li Student Member, IEEE The University of Tennessee Department Science Knoxville, TN, 37996, USA tolbert@utk.edu Abstract ­ In hybrid electric vehicles (HEV), a battery-source inverter, dc bus capacitor, Electric vehicle, Harmonic current, Hybrid electric vehicle. I. INTRODUCTION

Tolbert, Leon M.

292

Calibrated vapor generator source  

DOE Patents [OSTI]

A portable vapor generator is disclosed that can provide a controlled source of chemical vapors, such as, narcotic or explosive vapors. This source can be used to test and calibrate various types of vapor detection systems by providing a known amount of vapors to the system. The vapor generator is calibrated using a reference ion mobility spectrometer. A method of providing this vapor is described, as follows: explosive or narcotic is deposited on quartz wool, placed in a chamber that can be heated or cooled (depending on the vapor pressure of the material) to control the concentration of vapors in the reservoir. A controlled flow of air is pulsed over the quartz wool releasing a preset quantity of vapors at the outlet. 10 figs.

Davies, J.P.; Larson, R.A.; Goodrich, L.D.; Hall, H.J.; Stoddard, B.D.; Davis, S.G.; Kaser, T.G.; Conrad, F.J.

1995-09-26T23:59:59.000Z

293

Trial operation of material protection, control, and accountability systems at two active nuclear material handling sites within the All-Russian Institute of Experimental Physics (VNIIEF)  

SciTech Connect (OSTI)

This paper discusses Russian Federal Nuclear Center (RFNC)-VNIIEF activities in the area of nuclear material protection, control, and accounting (MPC and A) procedures enhancement. The goal of such activities is the development of an automated systems for MPC and A at two of the active VNIIEF research sites: a research (reactor) site and a nuclear material production facility. The activities for MPC and A system enhancement at both sites are performed in the framework of a VNIIEF-Los Alamos National Laboratory contract with participation from Sandia National Laboratories, Lawrence Livermore National Laboratory, Brookhaven National Laboratory, Oak Ridge National Laboratory, Pacific Northwest National Laboratory, and PANTEX Plant in accordance with Russian programs supported by MinAtom. The American specialists took part in searching for possible improvement of technical solutions, ordering equipment, and delivering and testing the equipment that was provided by the Americans.

Skripka, G.; Vatulin, V.; Yuferev, V. [VNIIEF, Sarov (Russian Federation)] [and others

1997-11-01T23:59:59.000Z

294

Rapid Automated Treatment Planning Process to Select Breast Cancer Patients for Active Breathing Control to Achieve Cardiac Dose Reduction  

SciTech Connect (OSTI)

Purpose: To evaluate a rapid automated treatment planning process for the selection of patients with left-sided breast cancer for a moderate deep inspiration breath-hold (mDIBH) technique using active breathing control (ABC); and to determine the dose reduction to the left anterior descending coronary artery (LAD) and the heart using mDIBH. Method and Materials: Treatment plans were generated using an automated method for patients undergoing left-sided breast radiotherapy (n = 53) with two-field tangential intensity-modulated radiotherapy. All patients with unfavorable cardiac anatomy, defined as having >10 cm{sup 3} of the heart receiving 50% of the prescribed dose (V{sub 50}) on the free-breathing automated treatment plan, underwent repeat scanning on a protocol using a mDIBH technique and ABC. The doses to the LAD and heart were compared between the free-breathing and mDIBH plans. Results: The automated planning process required approximately 9 min to generate a breast intensity-modulated radiotherapy plan. Using the dose-volume criteria, 20 of the 53 patients were selected for ABC. Significant differences were found between the free-breathing and mDIBH plans for the heart V{sub 50} (29.9 vs. 3.7 cm{sup 3}), mean heart dose (317 vs. 132 cGy), mean LAD dose (2,047 vs. 594 cGy), and maximal dose to 0.2 cm{sup 3} of the LAD (4,155 vs. 1,507 cGy, all p <.001). Of the 17 patients who had a breath-hold threshold of {>=}0.8 L, 14 achieved a {>=}90% reduction in the heart V{sub 50} using the mDIBH technique. The 3 patients who had had a breath-hold threshold <0.8 L achieved a lower, but still significant, reduction in the heart V{sub 50}. Conclusions: A rapid automated treatment planning process can be used to select patients who will benefit most from mDIBH. For selected patients with unfavorable cardiac anatomy, the mDIBH technique using ABC can significantly reduce the dose to the LAD and heart, potentially reducing the cardiac risks.

Wang Wei; Purdie, Thomas G. [Radiation Medicine Program, Princess Margaret Hospital, University Health Network, Toronto, ON (Canada); Department of Radiation Oncology, University of Toronto, Toronto, ON (Canada); Rahman, Mohammad; Marshall, Andrea [Radiation Medicine Program, Princess Margaret Hospital, University Health Network, Toronto, ON (Canada); Liu Feifei [Radiation Medicine Program, Princess Margaret Hospital, University Health Network, Toronto, ON (Canada); Department of Radiation Oncology, University of Toronto, Toronto, ON (Canada); Fyles, Anthony, E-mail: anthony.fyles@rmp.uhn.on.ca [Radiation Medicine Program, Princess Margaret Hospital, University Health Network, Toronto, ON (Canada); Department of Radiation Oncology, University of Toronto, Toronto, ON (Canada)

2012-01-01T23:59:59.000Z

295

Implementing the Pecos River Watershed Protection Plan through Invasive Species Control and by Providing Technical and Financial Assistance to Reduce Agricultural Nonpoint Source Pollution  

E-Print Network [OSTI]

leaf beetle Successful defoliation of saltcedar continued in 2013 as well and with the extensive distribution of beetles from their release sites, beetle collections were kept to a minimum. In some locations, beetles have been observed about 50.../salt-cedar-bugs-found-eddy- county; https://today.agrilife.org/2013/07/29/theres-a-new-bug-in-town/). [9] Figure 6: Saltcedar biological release sites and chemical control distribution south of I-10 Figure 7: Saltcedar biological release...

Gregory, L.; Porter, A.; Knutson, A.; Muegge, M.

2013-01-01T23:59:59.000Z

296

Identification and Active Control of Multiple Sources of Sound Work at the Institute of Sound and Vibration Research (ISVR) has led to a sophisticated  

E-Print Network [OSTI]

in acoustics known as multiple- input multiple-output (MIMO) problems. The research findings have attracted, aviation and defence. Engineers at the University of Southampton began work to tackle problems in acoustics Systems, and Philip Nelson, Professor of Acoustics, were appointed as lecturers in ISVR. Since that time

Sóbester, András

297

National Synchrotron Light Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Document Index Document Index A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z A Assessment Tracking System (ATS) Institutional ATS NSLS Family ATS NSLS Family ATS Instructions B Beamline Safety Review Beamline Safety Checklist C Calibration Calibration procedure NSLS Controlled Measuring Test Equipment Calibration List Caution Tags Coaxial cables & connectors Conduct of Operations Manual Cryogenic safety Cryogenic Liquids: Storage, Usage and Handling D Design (see engineering design) Document Control drawings (also refer to Engineer Design) procedures, & policies Approving, Distributing; List of NSLS Active Controlled Documents Periodic Review; Preparing; Reviewing; specification (distribution) specification (preparation) Document list - Active Controlled Documents

298

Expression of Tyrosine Aminotransferase Activity in Somatic-Cell Heterokaryons: Evidence for Negative Control of Enzyme Expression  

Science Journals Connector (OSTI)

...BRL-62) cells Histochemical assay for TAT Source of nuclei Input cell Total multinucleate TAT TAT TAT Total multinucleate All...the full nuclear complement of both cells is present, since nuclear fusion and possible mitotic errors cannot yet have occurred. Thus...

E. Brad Thompson; T. D. Gelehrter

1971-01-01T23:59:59.000Z

299

Lessons Learned at the Nevada National Security Site Implementing the EFCOG Activity-level Work Planning and Control Guide  

Broader source: Energy.gov [DOE]

Slide Presentation by Steele Coddington, Work Planning Manager, National Security Technologies, Nevada National Security Site. Lessons Learned Implementing Work Planning & Control. 6 Step Process for improving WP&C.

300

COMPETITIVE SOURCING  

Broader source: Energy.gov (indexed) [DOE]

COMPETITIVE SOURCING COMPETITIVE SOURCING EXECUTIVE STEERING GROUP MEETING PROCEEDINGS June 17, 2002 8:30 am - 11:00 am Room 5E-069 ATTENDEES John Gordon Robert Card Bruce Carnes Kathy Peery Brendan Danaher, AFGE Tony Lane Karen Evans Bill Sylvester Claudia Cross Brian Costlow Laurie Smith Helen Sherman Frank Bessera Rosalie Jordan Dennis O'Brien Mark Hively Robin Mudd Steven Apicella AGENDA 8:30 a.m. - 8:35 a.m. Opening Remarks 8:35a.m. - 8:55 a.m. Executive Steering Group roles and responsibilities, A-76 status, and talking points Team Briefings 8:55 a.m. - 9:20 a.m. Information Technology Study 9:20 a.m. - 9:45 a.m. Financial Services Study

Note: This page contains sample records for the topic "activity controlled source" 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

Design of active suspension control based upon use of tubular linear motor and quarter-car model  

E-Print Network [OSTI]

masses are constrained to motion in only the vertical direction. The system will be excited by road profile simulations drawn under the wheel (not shown) in Figure I-1. 7 Figure I-1 Proposed experimental test rig The system... independent suspension layout This design features a lower control arm that pivots at the body (sprung mass) and is connected to the wheel spindle at a ball joint. All masses not supported by the spring (lower control arm, spindle, wheel, lower strut...

Allen, Justin Aaron

2008-10-10T23:59:59.000Z

302

Flows and Non-thermal Velocities in Solar Active Regions Observed with the Extreme-ultraviolet Imaging Spectrometer on Hinode: A Tracer of Active Region Sources of Heliospheric Magnetic Fields?  

E-Print Network [OSTI]

From Doppler velocity maps of active regions constructed from spectra obtained by the Extreme-ultraviolet Imaging Spectrometer (EIS) on the Hinode spacecraft we observe large areas of outflow (20-50 km/s) that can persist for at least a day. These outflows occur in areas of active regions that are faint in coronal spectral lines formed at typical quiet Sun and active region temperatures. The outflows are positively correlated with non-thermal velocities in coronal plasmas. The bulk mass motions and non-thermal velocities are derived from spectral line centroids and line widths, mostly from a strong line of Fe XII at 195.12 Angstroms. The electron temperature of the outflow regions estimated from an Fe XIII to Fe XII line intensity ratio is about 1.2-1.4 MK. The electron density of the outflow regions derived from a density sensitive intensity ratio of Fe XII lines is rather low for an active region. Most regions average around 7E10+8 cm(-3), but there are variations on pixel spatial scales of about a factor of 4. We discuss results in detail for two active regions observed by EIS. Images of active regions in line intensity, line width, and line centroid are obtained by rastering the regions. We also discuss data from the active regions obtained from other orbiting spacecraft that support the conclusions obtained from analysis of the EIS spectra. The locations of the flows in the active regions with respect to the longitudinal photospheric magnetic fields suggest that these regions might be tracers of long loops and/or open magnetic fields that extend into the heliosphere, and thus the flows could possibly contribute significantly to the solar wind.

G. A. Doschek; H. P. Warren; J. T. Mariska; K. Muglach; J. L. Culhane; H. Hara; T Watanabe

2008-07-17T23:59:59.000Z

303

Load Control  

Broader source: Energy.gov (indexed) [DOE]

Visualization and Controls Peer Review Visualization and Controls Peer Review Load Control for System Reliability and Measurement-Based Stability Assessment Dan Trudnowski, PhD, PE Montana Tech Butte, MT 59701 dtrudnowski@mtech.edu 406-496-4681 October 2006 2 Presentation Outline * Introduction - Goals, Enabling technologies, Overview * Load Control - Activities, Status * Stability Assessment - Activities, Status * Wrap up - Related activities, Staff 3 Goals * Research and develop technologies to improve T&D reliability * Technologies - Real-time load control methodologies - Measurement-based stability-assessment 4 Enabling Technologies * Load control enabled by GridWise technology (e.g. PNNL's GridFriendly appliance) * Real-time stability assessment enabled by Phasor Measurement (PMU) technology 5 Project Overview * Time line: April 18, 2006 thru April 17, 2008

304

E-Print Network 3.0 - aerosol particle sources Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

sea salt, volcanoes, oceanicterrestrial biological sources, natural fires 12... ;Transport Power Industry Biomass burning Residential Human activity Perspective ... Source:...

305

The European Spallation Source  

SciTech Connect (OSTI)

The European Spallation Source (ESS) is a 5 MW, 2.5 GeV long pulse proton linac, to be built and commissioned in Lund, Sweden. The Accelerator Design Update (ADU) project phase is under way, to be completed at the end of 2012 by the delivery of a Technical Design Report. Improvements to the 2003 ESS design will be summarised, and the latest design activities will be presented.

Peggs, S; Eshraqi, M; Hahn, H; Jansson, A; Lindroos, M; Ponton, A; Rathsman, K; Trahern, G; Bousso, S; Calaga, R; Devanz, G; Duperrier, R D; Eguia, J; Gammino, S; Moller, S P; Oyon, C; Ruber, R.J.M.Y.

2011-03-01T23:59:59.000Z

306

PCA and PMF based methodology for air pollution sources identification and apportionment  

E-Print Network [OSTI]

PCA and PMF based methodology for air pollution sources identification and apportionment Marie pollution is a wide concern for human health and requires the development of air quality control strategies burning, mining, construction activity or agriculture. This air pollu- tion is a complex mixture

Paris-Sud XI, Université de

307

PCA and PMF based methodology for air pollution sources identification and apportionment  

E-Print Network [OSTI]

PCA and PMF based methodology for air pollution sources identification and apportionment Marie pollution is a wide concern for human health and requires the development of air quality control strategies, mining, construction activity or agriculture. This air pollu- tion is a complex mixture of extremely

Paris-Sud XI, Université de

308

COMPETITIVE SOURCING  

Broader source: Energy.gov (indexed) [DOE]

4 4 May 2005 Executive Office of the President Office of Management and Budget i Table of Contents Executive Summary ...................................................................................................1 Part I. Summary of findings......................................................................................2 A. Use of competition..........................................................................................2 1. Strategic applications of competition........................................................2 2. Length of Competition .............................................................................5 3. Level of Activity ......................................................................................6

309

Active Ground Vehicle Control with use of a SuperTwisting Algorithm in the Presence of Parameter Variations  

E-Print Network [OSTI]

mainly thanks to the wide use of electronic devices, which allow the control of a number of functions Vectoring (RTV) devices. The AFS provides an additional steering angle over the driver steering angle, while some robustness properties with respect to those un- certainties. Various type of tyre models can

Paris-Sud XI, Université de

310

Institutional Controls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Institutional Controls Institutional Controls Many major Federal laws (e.g., Atomic Energy Act (AEA), Resource Conservation Recovery Act (RCRA), Comprehensive Environmental Response, Compensation and Liability Act (CERCLA)), Executive Orders, regulations and various other drivers influence the use of institutional controls at DOE sites. Some drivers directly authorize or require the use of institutional controls, while others do not. DOE also uses institutional controls when no specific statutory requirement exists to supplement active remediation, pollution control, public and resource protection, and physical security, or to bolster the integrity of engineered remedies. DOE and its predecessor agencies have conducted activities for over 50 years, using land ownership and access control, environmental monitoring and surveillance, and other tools to support protection efforts at operational and inactive facilities, including radioactive waste burial grounds.

311

National Synchrotron Light Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

All Documents listed below are part of the Photon Sciences Directorate and All Documents listed below are part of the Photon Sciences Directorate and will be updated as needed. Photon Sciences ESH Standard Operating Procedures (SOPs) SOP No. Standard Operating Procedure for: LS-ES-0002 Procedure for Acid Etching of Silicon and Germanium Crystals LS-ESH-0004 NSLS Operations Group Chemical Spill and Gas Release Response LS-ESH-0010 VUV Injection Shutter LOTO LS-ESH-0012 LINAC LOTO LS-ESH-0013 Controlled Access to the VUV Ring LS-ESH-0014 Radiation Safety Interlocks at the National Synchrotron Light Source LS-ESH-0019 Beam Line Configuration Control Checklist Requirements LS-ESH-0020 Biosafety Requirements at the NSLS LS-ESH-0021 Biosafety Level 2 work at the NSLS/ A Technical Basis LS-ESH-0022 Beam Line Configuration Control Checklist Requirements

312

NIOSH comments to DOL on the Occupational Safety and Health Administration's proposed rule on the control of hazardous energy sources (lockout/tagout) by R. A. Lemen, June 28, 1988  

SciTech Connect (OSTI)

The testimony presented the position of NIOSH regarding the proposed rule of OSHA concerning lockout/tagout procedures for controlling hazardous energy sources. The proposed rule fills a need for requirements to prevent employee injuries and fatalities due to exposure to such hazards during servicing and maintenance. Specific sections of the rule include the use of the Bureau of Labor statistics work injury report study for accident data; the scope, application and purpose of the suggested rule; definitions applicable to the section; protective materials and hardware; and the verification of isolation. Several questions concerning the appropriateness of the rule for construction, the modification of the rule to make it more responsive to the unique hazards and working conditions found at construction sites, the use of additional accident and injury data for developing proposals in the area, and recommendations concerning record keeping were addressed.

Not Available

1988-06-28T23:59:59.000Z

313

SOURCE ACTIVITY TITLE: SOLID FUEL TRANSFORMATION PLANTS Coke Oven Furnaces Coke Oven (Door Leakage and Extinction) NOSE CODE: 104.12 NFR CODE:  

E-Print Network [OSTI]

1 ACTIVITIES INCLUDED Coke-production in general can be divided into the following steps: Coal handling and storage, coke oven charging, coal coking, extinction of coke, and coke oven gas purification. Combustion in coke oven furnaces (SNAP 010406) is treated in this chapter as well as door leakage and extinction (SNAP 040201). Figure 1-1 gives a key plan of a coke plant with emission relevant process steps and the byproduct recovery section. Figure 1-1: Key plan of a coke plant (Rentz et al. 1995) C o a l S lu d g e B l a s t F u r n a c e G a s f r o m S t e e l M il l A i r E m is s io n s G a s H o ld e r

Ic Activities; So Nox Nmv

314

NIOSH (National Institute for Occupational Safety and Health) testimony to DOL (Department of Labor) on the Occupational Safety and Health Administration's proposed rule on the control of hazardous energy sources (lockout/tagout) by R. W. Niemeier, September 8, 1988  

SciTech Connect (OSTI)

The testimony addressed the proposed rule on control of hazardous energy sources and was offered in support of the position of the Occupational Safety and Health Administration on this issue. Provisions already in existence for cranes, derricks, and power presses require lockout provisions for electrical connections. The proposed rule will extend these protections to nonelectric power sources and add a requirement for isolating nonelectric hazards. The new rule requires a written procedure and training program. NIOSH opposed the use of tags instead of locks, as tags only provide a warning and are subject to several abuses including removal before maintenance is complete and negligence in removing the tag by the service operator when maintenance is completed. Over 20 electrically related fatalities were noted where a deenergized locked-out electrical circuit would have prevented the fatality. In a review of 160 responses concerning injuries where the equipment was turned off, six indicated the equipment was tagged out. Concern was also expressed over the simple tagout permitted for mechanical power transmission systems. NIOSH recommends that each worker should apply and remove his or her own lock.

Not Available

1988-09-08T23:59:59.000Z

315

COMPETITIVE SOURCING  

Broader source: Energy.gov (indexed) [DOE]

EXECUTIVE STEERING GROUP Meeting Proceedings October 30, 2002 Room 6E-069, 10:30 - 12:00 Agenda Opening Remarks Bruce Carnes Competitive Sourcing Update Denny O'Brien Team Briefings Team Leads ESG Discussion/Wrap up Bruce Carnes Attendees Bruce Carnes, Acting Chair MaryAnn Shebek Robert Card Prentis Cook Ambassador Brooks Tony Lane Kyle McSlarrow Karen Evans Suzanne Brennan, NTEU Claudia Cross Brian Costlow Helen Sherman Frank Bessera Laurie Morman Denny O'Brien Travis McCrory Bill Pearce Jeff Dowl Mark Hively Steven Apicella Robin Mudd Bruce Carnes chaired the meeting and began with welcoming NTEU to the meeting. In regard to the OMB's Balanced Scorecard, the Department has achieved a Green on progress and we are close to achieving a yellow on status.

316

Light Sources Directorate Strategic Plan  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Light Sources Directorate Light Sources Directorate Strategic Plan December 2009 Light Sources Directorate Strategic Plan December 2009 ii | Vision and Mission Light Sources Directorate Strategic Plan The VISION of the Light Sources Directorate is: to be a provider of choice for world-class photon science and facilities that deliver outstanding scientific productivity and impact, and to be recognized as a leader in developing innovative techniques and ap- plications of photon science Our MISSION is defined by the set of activities that are required to realize this vision: to advance scientific knowledge and to solve critical problems through the design, construction, operation, and use of premier photon science facilities | Table of Contents Light Sources Directorate Strategic Plan

317

Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination  

DOE Patents [OSTI]

DC/DC converter has a transformer having primary coils connected to an input side and secondary coils connected to an output side. Each primary coil connects a full-bridge circuit comprising two switches on two legs, the primary coil being connected between the switches on each leg, each full-bridge circuit being connected in parallel wherein each leg is disposed parallel to one another, and the secondary coils connected to a rectifying circuit. An outer loop control circuit that reduces ripple in a voltage reference has a first resistor connected in series with a second resistor connected in series with a first capacitor which are connected in parallel with a second capacitor. An inner loop control circuit that reduces ripple in a current reference has a third resistor connected in series with a fourth resistor connected in series with a third capacitor which are connected in parallel with a fourth capacitor.

Lai, Jih-Sheng (Blacksburg, VA); Liu, Changrong (Sunnyvale, CA); Ridenour, Amy (Salem, VA)

2009-04-14T23:59:59.000Z

318

DOE-STD-1053-93; DOE Standard Guideline to Good Practices For Control of Maintenance Activities at DOE Nuclear Facilities  

Broader source: Energy.gov (indexed) [DOE]

3-93 3-93 March 1993 DOE STANDARD GUIDELINE TO GOOD PRACTICES FOR CONTROL OF MAINTENANCE ACTIVITIES AT DOE NUCLEAR FACILITIES U.S. Department of Energy AREA MNTY Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831. Available to the public from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Rd., Springfield, VA 22161. Order No. DE93014268 DOE-STD-1053-93 FOREWORD The purpose of the Guideline to Good Practices for Control of M aintenance A ctivities at DOE Nuclear Facilities is to provide contractor maintenance organizations with information

319

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a micro optical fiber light source. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications. 4 figs.

Kopelman, R.; Tan, W.; Shi, Z.Y.

1994-11-01T23:59:59.000Z

320

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a fiber optic micro-light source and sensor (50). An optical fiber micro-light source (50) is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors (22) in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material (60). This process allows significant control of the size of the micro light source (50). Furthermore, photo-chemically attaching an optically active material (60) enables the implementation of the micro-light source in a variety of sensor applications.

Kopelman, Raoul (Ann Arbor, MI); Tan, Weihong (Ames, IA); Shi, Zhong-You (Ann Arbor, MI)

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a micro optical fiber light source. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications.

Kopelman, Raoul (Ann Arbor, MI); Tan, Weihong (Ann Arbor, MI); Shi, Zhong-You (Ann Arbor, MI)

1994-01-01T23:59:59.000Z

322

Micro optical fiber light source and sensor and method of fabrication thereof  

DOE Patents [OSTI]

This invention relates generally to the development of and a method of fabricating a fiber optic micro-light source and sensor. An optical fiber micro-light source is presented whose aperture is extremely small yet able to act as an intense light source. Light sources of this type have wide ranging applications, including use as micro-sensors in NSOM. Micro-sensor light sources have excellent detection limits as well as photo stability, reversibility, and millisecond response times. Furthermore, a method for manufacturing a micro optical fiber light source is provided. It involves the photo-chemical attachment of an optically active material onto the end surface of an optical fiber cable which has been pulled to form an end with an extremely narrow aperture. More specifically, photopolymerization has been applied as a means to photo-chemically attach an optically active material. This process allows significant control of the size of the micro light source. Furthermore, photo-chemically attaching an optically active material enables the implementation of the micro-light source in a variety of sensor applications. 10 figs.

Kopelman, R.; Tan, W.; Shi, Z.Y.

1997-05-06T23:59:59.000Z

323

Activated-charcoal filters: water treatment, pollution control, and industrial applications. January 1970-July 1988 (citations from the US Patent data base). Report for January 1970-July 1988  

SciTech Connect (OSTI)

This bibliography contains citations of selected patents concerning activated-charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, industrial leaching, and filtration of toxic gases and pollutants are described. Applications include drinking water purification, filtering beverages, production of polymer materials, solvent and metal recovery, swimming pool filtration, waste conversion, automobile fuel and exhaust systems, and footwear deodorizing. (Contains 129 citations fully indexed and including a title list.)

Not Available

1988-08-01T23:59:59.000Z

324

Activated charcoal filters: Water treatment, pollution control, and industrial applications. (Latest citations from the Patent Bibliographic database with exemplary claims. ) Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning activated charcoal filters and their applications in water treatment, pollution control, and industrial processes. Filtering methods and equipment for air and water purification, industrial distillation and extraction, industrial leaching, and filtration of toxic materials and contaminants are described. Applications include drinking water purification, filtering beverages, production of polymer materials, solvent and metal recovery, waste conversion, automotive fuel and exhaust systems, swimming pool filtration, tobacco smoke filters, kitchen ventilators, medical filtration treatment, and odor absorbing materials. (Contains 250 citations and includes a subject term index and title list.)

Not Available

1993-08-01T23:59:59.000Z

325

Selective ion source  

DOE Patents [OSTI]

A ion source is described wherein selected ions maybe extracted to the exclusion of unwanted ion species of higher ionization potential. Also described is a method of producing selected ions from a compound, such as P{sup +} from PH{sub 3}. The invention comprises a plasma chamber, an electron source, a means for introducing a gas to be ionized by electrons from the electron source, means for limiting electron energy from the electron source to a value between the ionization energy of the selected ion species and the greater ionization energy of an unwanted ion specie, and means for extracting the target ion specie from the plasma chamber. In one embodiment, the electrons are generated in a plasma cathode chamber immediately adjacent to the plasma chamber. A small extractor draws the electrons from the plasma cathode chamber into the relatively positive plasma chamber. The energy of the electrons extracted in this manner is easily controlled. The invention is particularly useful for doping silicon with P{sup +}, As{sup +}, and B{sup +} without the problematic presence of hydrogen, helium, water, or carbon oxide ions. Doped silicon is important for manufacture of semiconductors and semiconductor devices. 6 figs.

Leung, K.N.

1996-05-14T23:59:59.000Z

326

Selective ion source  

DOE Patents [OSTI]

A ion source is described wherein selected ions maybe extracted to the exclusion of unwanted ion species of higher ionization potential. Also described is a method of producing selected ions from a compound, such as P.sup.+ from PH.sub.3. The invention comprises a plasma chamber, an electron source, a means for introducing a gas to be ionized by electrons from the electron source, means for limiting electron energy from the electron source to a value between the ionization energy of the selected ion species and the greater ionization energy of an unwanted ion specie, and means for extracting the target ion specie from the plasma chamber. In one embodiment, the electrons are generated in a plasma cathode chamber immediately adjacent to the plasma chamber. A small extractor draws the electrons from the plasma cathode chamber into the relatively positive plasma chamber. The energy of the electrons extracted in this manner is easily controlled. The invention is particularly useful for doping silicon with P.sup.+, AS.sup.+, and B.sup.+ without the problematic presence of hydrogen, helium, water, or carbon oxide ions. Doped silicon is important for manufacture of semiconductors and semiconductor devices.

Leung, Ka-Ngo (Hercules, CA)

1996-01-01T23:59:59.000Z

327

Radio Sources in Low-Luminosity Active Galactic Nuclei.IV. Radio Luminosity Function, Importance of Jet Power, and Radio Properties of the Complete Palomar Sample  

E-Print Network [OSTI]

We present the completed results of a high resolution radio imaging survey of all (~200) low-luminosity active galactic nuclei (LLAGNs) and AGNs in the Palomar Spectroscopic Sample. The high incidences of pc-scale radio nuclei, with T(brightness) >=10^7 K, and sub-parsec jets argue for accreting black holes in >=50% of all LINERs and low-luminosity Seyferts; there is no evidence against all LLAGNs being mini-AGNs. The radio luminosity function (RLF) of Palomar Sample LLAGNs and AGNs extends three orders of magnitude below, and is continuous with, that of `classical' AGNs. We find marginal evidence for a low-power turnover in the RLF; nevertheless LLAGNs are responsible for a significant fraction of present day mass accretion. Adopting the jet model of Falcke & Biermann, we show that the accretion energy output in LLAGNs is dominated by the energy in the observed jets rather than the radiated bolometric luminosity. The Palomar LLAGNs and AGNs follow the same scaling between jet power and narrow line region (NLR) luminosity as the pc to kpc jets in powerful radio galaxies. Eddington ratios of <= 10^{-1} - 10^{-5} are implied in jet models of the radio emission. We find evidence that, in analogy to Galactic black hole candidates, LINERs are in a `low/hard' state (gas poor nuclei, low Eddington ratio, ability to launch collimated jets) while low-luminosity Seyferts are in a `high' state (gas rich nuclei, higher Eddington ratio, less likely to launch collimated jets). The jets are energetically more significant than supernovae in the LLAGN host galaxies, and are potentially able to deposit sufficient energy into the innermost parsecs to significantly slow the gas supply to the accretion disk.

Neil M. Nagar; Heino Falcke; Andrew S. Wilson

2005-02-25T23:59:59.000Z

328

Radiation source  

DOE Patents [OSTI]

A device and method for relativistic electron beam heating of a high-density plasma in a small localized region. A relativistic electron beam generator or accelerator produces a high-voltage electron beam which propagates along a vacuum drift tube and is modulated to initiate electron bunching within the beam. The beam is then directed through a low-density gas chamber which provides isolation between the vacuum modulator and the relativistic electron beam target. The relativistic beam is then applied to a high-density target plasma which typically comprises DT, DD, or similar thermonuclear gas at a density of 10.sup.17 to 10.sup.20 electrons per cubic centimeter. The target gas is ionized prior to application of the relativistic electron beam by means of a laser or other preionization source to form a plasma. Utilizing a relativistic electron beam with an individual particle energy exceeding 3 MeV, classical scattering by relativistic electrons passing through isolation foils is negligible. As a result, relativistic streaming instabilities are initiated within the high-density target plasma causing the relativistic electron beam to efficiently deposit its energy into a small localized region of the high-density plasma target.

Thode, Lester E. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

329

Chapter 2 - Energy Sources  

Science Journals Connector (OSTI)

Abstract In todays industrialized world, energy became vital to all human activities including manufacturing, data processing, heating, cooling, lighting, transportation, food processing, etc., yet it is invisible for most of us. Todays energy generation technologies are undergoing a paradigm shift; the solution to our current dilemma requires more renewable contribution as well as the more efficient utilization of conventional energy sources. Recognizing this importance, this chapter focuses on energy sources and energy generation technologies including, coal, hydroelectric, nuclear, solar, wind, ocean, and several others. Alternative energy technologies received great interest in recent years due to environmental impact, greenhouse gas emissions, national energy security, and increasing cost of fossil fuel-based sources. With particular emphasis on renewable and alternative energy systems, characteristic features of the renewable energy sources have been reviewed. Since power electronics is a key enabling technology for renewable energy utilization, power electronic converters and interfaces that are used for grid interconnection and stand-alone operation have been presented.

Omer C. Onar; Alireza Khaligh

2015-01-01T23:59:59.000Z

330

Seismic sources  

DOE Patents [OSTI]

Apparatus is described for placement in a borehole in the earth, which enables the generation of closely controlled seismic waves from the borehole. Pure torsional shear waves are generated by an apparatus which includes a stator element fixed to the borehole walls and a rotor element which is electrically driven to rapidly oscillate on the stator element to cause reaction forces transmitted through the borehole walls to the surrounding earth. Longitudinal shear waves are generated by an armature that is driven to rapidly oscillate along the axis of the borehole, to cause reaction forces transmitted to the surrounding earth. Pressure waves are generated by electrically driving pistons that press against opposite ends of a hydraulic reservoir that fills the borehole. High power is generated by energizing the elements for more than about one minute. 9 figs.

Green, M.A.; Cook, N.G.W.; McEvilly, T.V.; Majer, E.L.; Witherspoon, P.A.

1987-04-20T23:59:59.000Z

331

Computer controlled fluorometer device and method of operating same  

DOE Patents [OSTI]

A computer controlled fluorometer device and method of operating same, said device being made to include a pump flash source and a probe flash source and one or more sample chambers in combination with a light condenser lens system and associated filters and reflectors and collimators, as well as signal conditioning and monitoring means and a programmable computer means and a software programmable source of background irradiance that is operable according to the method of the invention to rapidly, efficiently and accurately measure photosynthetic activity by precisely monitoring and recording changes in fluorescence yield produced by a controlled series of predetermined cycles of probe and pump flashes from the respective probe and pump sources that are controlled by the computer means.

Kolber, Zbigniew (Shoreham, NY); Falkowski, Paul (Stony Brook, NY)

1990-01-01T23:59:59.000Z

332

Environmental Controls on the Activity of Aquifer Microbial Communities in the 300 Area of the Hanford Site  

SciTech Connect (OSTI)

Aquifer microbes in the 300 Area of the Hanford Site in southeastern Washington State, USA are periodically exposed to U(VI) concentrations that can range up to 10 ?M in small sediment fractures. Assays of 35 H-leucine incorporation indicated that both sediment-associated and planktonic microbes were metabolically active, and that organic C was growth-limiting in the sediments. Although bacteria suspended in native groundwater retained high activity when exposed to 100 ?M U(VI), they were inhibited by U(VI) < 1 ?M in synthetic groundwater that lacked added bicarbonate. Chemical speciation modeling suggested that positively-charged species and particularly (UO2)3(OH)5+ rose in concentration as more U(VI) was added to synthetic groundwater, but that carbonate complexes dominated U(VI) speciation in natural groundwater. U toxicity was relieved when increasing amounts of bicarbonate were added to synthetic groundwater containing 4.5 ?M U(VI). Pertechnetate, an oxyanion that is another contaminant of concern at the Hanford Site, was not toxic to groundwater microbes at concentrations up to 125 ?M.

Konopka, Allan; Plymale, Andrew E.; Carvajal, Denny A.; Lin, Xueju; McKinley, James P.

2013-11-06T23:59:59.000Z

333

Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tomography Interest Group Contact: Robert Winarski, Center for Nanoscale Materials winarski@anl.gov Contact: Francesco De Carlo, Advanced Photon Source decarlo@aps.anl.gov The tomography special interest group of the Advanced Photon Source (APS) at Argonne National Laboratory has been created to promote awareness of the tomography facilities at the APS and to foster communications between the various research groups. Through this group, we believe we can build a strong user community for tomography. The following beamlines have active tomography research programs: 2-BM-B (XOR) http://www.aps.anl.gov/Xray_Science_Division/Xray_Microscopy_and_Imaging/Science_and_Research/Techniques/Tomography/index.html Information about the beamline: http://beam.aps.anl.gov/pls/apsweb/beamline_display_pkg.display_beamline?p_beamline_num_c=31

334

Spent Sealed Sources Management in Switzerland - 12011  

SciTech Connect (OSTI)

Information is provided about the international recommendations for the safe management of disused and spent sealed radioactive sources wherein the return to the supplier or manufacturer is encouraged for large radioactive sources. The legal situation in Switzerland is described mentioning the demand of minimization of radioactive waste as well as the situation with respect to the interim storage facility at the Paul Scherrer Institute (PSI). Based on this information and on the market situation with a shortage of some medical radionuclides the management of spent sealed sources is provided. The sources are sorted according to their activity in relation to the nuclide-specific A2-value and either recycled as in the case of high active sources or conditioned as in the case for sources with lower activity. The results are presented as comparison between recycled and conditioned activity for three selected nuclides, i.e. Cs-137, Co-60 and Am-241. (author)

Beer, H.F. [Paul Scherrer Institute, CH-5232 Villigen (Switzerland)

2012-07-01T23:59:59.000Z

335

Seismic sources  

DOE Patents [OSTI]

Apparatus is described for placement in a borehole in the earth, which enables the generation of closely controlled seismic waves from the borehole. Pure torsional shear waves are generated by an apparatus which includes a stator element fixed to the borehole walls and a rotor element which is electrically driven to rapidly oscillate on the stator element to cause reaction forces transmitted through the borehole walls to the surrounding earth. Logitudinal shear waves are generated by an armature that is driven to rapidly oscillate along the axis of the borehole relative to a stator that is clamped to the borehole, to cause reaction forces transmitted to the surrounding earth. Pressure waves are generated by electrically driving pistons that press against opposite ends of a hydraulic reservoir that fills the borehole. High power is generated by energizing the elements at a power level that causes heating to over 150.degree. C. within one minute of operation, but energizing the elements for no more than about one minute.

Green, Michael A. (Oakland, CA); Cook, Neville G. W. (Lafayette, CA); McEvilly, Thomas V. (Berkeley, CA); Majer, Ernest L. (El Cirrito, CA); Witherspoon, Paul A. (Berkeley, CA)

1992-01-01T23:59:59.000Z

336

Neutron activation experiments in radiochemistry  

Science Journals Connector (OSTI)

Neutron activation experiments in radiochemistry ... Describes experimentation involving the neutron activation of a variety of samples irradiated in a subcritical reactor and a paraffin-moderated source. ...

Karl S. Vorres

1960-01-01T23:59:59.000Z

337

E-Print Network 3.0 - applying mercury control Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

with source type and emissions control technology. Emission controls for other pollutants... from fossil fuel energy sources and implementation of efficient control...

338

Neutral particle beam intensity controller  

DOE Patents [OSTI]

A neutral beam intensity controller is provided for a neutral beam generator in which a neutral beam is established by accelerating ions from an ion source into a gas neutralizer. An amplitude modulated, rotating magnetic field is applied to the accelerated ion beam in the gas neutralizer to defocus the resultant neutral beam in a controlled manner to achieve intensity control of the neutral beam along the beam axis at constant beam energy. The rotating magnetic field alters the orbits of ions in the gas neutralizer before they are neutralized, thereby controlling the fraction of neutral particles transmitted out of the neutralizer along the central beam axis to a fusion device or the like. The altered path or defocused neutral particles are sprayed onto an actively cooled beam dump disposed perpendicular to the neutral beam axis and having a central open for passage of the focused beam at the central axis of the beamline. Virtually zero therough 100% intensity control is achieved by varying the magnetic field strength without altering the ion source beam intensity or its species yield.

Dagenhart, William K. (Oak Ridge, TN)

1986-01-01T23:59:59.000Z

339

Controlled release of molecular components of dendrimer/bioactive complexes  

DOE Patents [OSTI]

A method for releasing molecules (guest molecules) from the matrix formed by the structure of another molecule (host molecule) in a controllable manner has been invented. This method has many applications in science and industry. In addition, applications based on such molecular systems may revolutionize significant areas of medicine, in particular the treatment of cancer and of viral infection. Similar effects can also be obtained by controlled fragmentation of a source molecule, where the molecular fragments form the active principle.

Segalman, Daniel J. (Albuquerque, NM); Wallace, J. Shield (Albuquerque, NM)

1998-01-01T23:59:59.000Z

340

Controlled release of molecular components of dendrimer/bioactive complexes  

DOE Patents [OSTI]

A method for releasing molecules (guest molecules) from the matrix formed by the structure of another molecule (host molecule) in a controllable manner has been invented. This method has many applications in science and industry. In addition, applications based on such molecular systems may revolutionize significant areas of medicine, in particular the treatment of cancer and of viral infection. Similar effects can also be obtained by controlled fragmentation of a source molecule, where the molecular fragments form the active principle. 13 figs.

Segalman, D.J.; Wallace, J.S.

1998-08-18T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Advanced Light Source Activity Report 2000  

E-Print Network [OSTI]

Goldstein, E. Blakely, K. Bjornstad, M. Martin, and W.R.M.L. Russell, and K. Bjornstad (Berkeley Lab) and M.C.Martin, E.A. Blakely, K. Bjornstad, and W.R. McKinney,

Greiner, A.; Moxon, L.; Robinson, A.; Tamura, L.

2001-01-01T23:59:59.000Z

342

Advanced Light Source Activity Report 2005  

E-Print Network [OSTI]

chemical states, and small metal-silicide precipi- F I G U Rmetal defects in commercial solar cell material. Left: Iron silicide

Tamura Ed., Lori S.

2010-01-01T23:59:59.000Z

343

Detecting fission from special nuclear material sources  

DOE Patents [OSTI]

A neutron detector system for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly into information that a first responder can use to discriminate materials. The system comprises counting neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. The system includes a graphing component that displays the plot of the neutron distribution from the unknown source over a Poisson distribution and a plot of neutrons due to background or environmental sources. The system further includes a known neutron source placed in proximity to the unknown source to actively interrogate the unknown source in order to accentuate differences in neutron emission from the unknown source from Poisson distributions and/or environmental sources.

Rowland, Mark S. (Alamo, CA); Snyderman, Neal J. (Berkeley, CA)

2012-06-05T23:59:59.000Z

344

Instrumentation and Controls Division Progress Report for the Period of July 1, 1994 to December 31, 1997: Publications, Presentations, Activities, and Awards  

SciTech Connect (OSTI)

This report contains a record of publishing and other activities in the Oak Ridge National Laboratory (ORNL) Instrumentation and Controls (I&C) Division for the period of July 1, 1994, to December31, 1997. It is a companion volume to Working Together on New Horizons: Instrumentation and Controls Division Progress Report for the Period of July 1, 1994, to December 31, 1997 (OR.NLA4-6530). Working Together on New Horizons contains illustrated summaries of some of the projects under way in I&C Division. Both books can be obtained by contacting C. R. Brittain (brittain@ornl. gov), P.O. Box 2008, Oak Ridge, TN 37831-6005. l&C Division Mission and Vision I&C Division develops and maintains techniques, instruments, and systems that lead to a better understanding of nature and harnessing of natural phenomena for the benefit of humankind. We have dedicated ourselves to accelerating the advancement of science and the transfer of those advancements into products and processes that benefit U.S. industry and enhance the security of our citizens.

McDonald, D.W.

1998-04-01T23:59:59.000Z

345

Thulium-170 heat source  

SciTech Connect (OSTI)

An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.

Walter, C.E.; Van Konynenburg, R.; VanSant, J.H.

1990-09-06T23:59:59.000Z

346

Thulium-170 heat source  

DOE Patents [OSTI]

An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipes are inserted in the heat block and contain a working fluid. The heat pipe working fluid transfers heat from the heat block to a heat exchanger for power conversion. Single phase gas pressure controls the flow of the working fluid for maximum heat exchange and to provide passive cooling.

Walter, Carl E. (Pleasanton, CA); Van Konynenburg, Richard (Livermore, CA); VanSant, James H. (Tracy, CA)

1992-01-01T23:59:59.000Z

347

Nowcasting influenza outbreaks using open-source media report.  

SciTech Connect (OSTI)

We construct and verify a statistical method to nowcast influenza activity from a time-series of the frequency of reports concerning influenza related topics. Such reports are published electronically by both public health organizations as well as newspapers/media sources, and thus can be harvested easily via web crawlers. Since media reports are timely, whereas reports from public health organization are delayed by at least two weeks, using timely, open-source data to compensate for the lag in %E2%80%9Cofficial%E2%80%9D reports can be useful. We use morbidity data from networks of sentinel physicians (both the Center of Disease Control's ILINet and France's Sentinelles network) as the gold standard of influenza-like illness (ILI) activity. The time-series of media reports is obtained from HealthMap (http://healthmap.org). We find that the time-series of media reports shows some correlation ( 0.5) with ILI activity; further, this can be leveraged into an autoregressive moving average model with exogenous inputs (ARMAX model) to nowcast ILI activity. We find that the ARMAX models have more predictive skill compared to autoregressive (AR) models fitted to ILI data i.e., it is possible to exploit the information content in the open-source data. We also find that when the open-source data are non-informative, the ARMAX models reproduce the performance of AR models. The statistical models are tested on data from the 2009 swine-flu outbreak as well as the mild 2011-2012 influenza season in the U.S.A.

Ray, Jaideep; Brownstein, John S. [Boston Children%3CU%2B2019%3Es Hospital, Boston, MA

2013-02-01T23:59:59.000Z

348

Advanced Neutron Source (ANS) Project progress report  

SciTech Connect (OSTI)

This report discusses the following topics on the advanced neutron source: quality assurance (QA) program; reactor core development; fuel element specification; corrosion loop tests and analyses; thermal-hydraulic loop tests; reactor control concepts; critical and subcritical experiments; material data, structural tests, and analysis; cold source development; beam tube, guide, and instrument development; hot source development; neutron transport and shielding; I C research and development; facility concepts; design; and safety.

McBee, M.R.; Chance, C.M. (eds.) (Oak Ridge National Lab., TN (USA)); Selby, D.L.; Harrington, R.M.; Peretz, F.J. (Oak Ridge National Lab., TN (USA))

1990-04-01T23:59:59.000Z

349

National Synchrotron Light Source guidelines for the conduct of operations  

SciTech Connect (OSTI)

To improve the quality and uniformity of operations at the Department of Energy`s facilities, the DOE issued Order 5480.19 ``Conduct of Operations Requirements at DOE facilities.`` This order recognizes that the success of a facilities mission critically depends upon a high level of performance by its personnel and equipment. This performance can be severely impaired if the facility`s Conduct of Operations pays inadequate attention to issues of organization, safety, health, and the environment. These guidelines are Brookhaven National Laboratory`s and the National Synchrotron Light Source`s acknowledgement of the principles of Conduct of Operations and the response to DOE Order 5480.19. These guidelines cover the following areas: (1) operations organization and administration; (2) shift routines and operating practices; (3) control area activities; (4) communications; (5) control of on-shift training; (6) investigation of abnormal events; (7) notifications; (8) control of equipment and system studies; (9) lockouts and tagouts; (10) independent verification; (11) log-keeping; (12) operations turnover; (13) operations aspects of facility process control (14) required reading; (15) timely orders to operators; (16) operations procedures; (17) operator aid posting; and (18) equipment sizing and labeling.

Buckley, M. [Brookhaven National Lab., Upton, NY (United States). National Synchrotron Light Source

1998-01-01T23:59:59.000Z

350

Multiple source/multiple target fluid transfer apparatus  

DOE Patents [OSTI]

A fluid transfer apparatus includes: (a) a plurality of orifices for connection with fluid sources; (b) a plurality of orifices for connection with fluid targets; (c) a set of fluid source conduits and fluid target conduits associated with the orifices; (d) a pump fluidically interposed between the source and target conduits to transfer fluid there between; (e) a purge gas conduit in fluid communication with the fluid source conduits, fluid target conduits and pump to receive and pass a purge gas under pressure; (f) a solvent conduit in fluid communication with the fluid source conduits, fluid target conduits and pump to receive and pass solvent, the solvent conduit including a solvent valve; (g) pump control means for controlling operation of the pump; (h) purge gas valve control means for controlling operation of the purge gas valve to selectively impart flow of purge gas to the fluid source conduits, fluid target conduits and pump; (i) solvent valve control means for controlling operation of the solvent valve to selectively impart flow of solvent to the fluid source conduits, fluid target conduits and pump; and (j) source and target valve control means for controlling operation of the fluid source conduit valves and the fluid target conduit valves to selectively impart passage of fluid between a selected one of the fluid source conduits and a selected one of the fluid target conduits through the pump and to enable passage of solvent or purge gas through selected fluid source conduits and selected fluid target conduits. 6 figs.

Turner, T.D.

1997-08-26T23:59:59.000Z

351

E-Print Network 3.0 - americium-beryllium ambe source Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

gain. There are two major sources of the performance gain from the AMB... at the first-level connecting the mem- ory controller and Advanced ... Source: Zhu, Zhichun -...

352

Compiler Hacking for Source Code Analysis  

Science Journals Connector (OSTI)

Many activities related to software quality assessment and improvement, such as empirical model construction, data flow analysis, testing or reengineering, rely on static source code analysis as the first and ...

G. Antoniol; M. Di Penta; G. Masone; U. Villano

2004-12-01T23:59:59.000Z

353

Novel passive lossless turn-on snubber for voltage source inverters  

SciTech Connect (OSTI)

A novel passive lossless turn-on snubber with a soft clamped turn-off snubber circuit for voltage source inverters is proposed. The energy trapped in the snubber is recovered into the dc supply and load without any active devices, associated control circuitry, or resistors. The overshoot voltage on the switches is clamped, and the peak switch current is low, making this snubber suitable for use in high-power insulated gate bipolar transistor (IGBT) inverters.

He, X.; Qian, Z.M. [Zhejiang Univ., Hangzhou (China). Dept. of Electrical Engineering; Finney, S.J.; Williams, B.W. [Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Computing and Electrical Engineering

1997-01-01T23:59:59.000Z

354

E Source | Open Energy Information  

Open Energy Info (EERE)

Source Source Jump to: navigation, search Name E Source Address 1965 North 57th Court Place Boulder, CO Zip 80301 Product Research firm Year founded 1986 Number of employees 51-200 Phone number 303.345.9000 Website [www.esource.com www.esource.com ] Coordinates 40.01895°, -105.2207964° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.01895,"lon":-105.2207964,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

355

Capital Sources and Providers  

Broader source: Energy.gov [DOE]

The most important elements of a clean energy lending program are the capital source and the capital provider. The capital source provides the funding to pay for clean energy projects, and the capital provider manages those funding sources. For example, a bank might use its customers' deposits as a capital source, but as the capital provider, the bank manages the investment of that capital.

356

International workshop on cold neutron sources  

SciTech Connect (OSTI)

The first meeting devoted to cold neutron sources was held at the Los Alamos National Laboratory on March 5--8, 1990. Cosponsored by Los Alamos and Oak Ridge National Laboratories, the meeting was organized as an International Workshop on Cold Neutron Sources and brought together experts in the field of cold-neutron-source design for reactors and spallation sources. Eighty-four people from seven countries attended. Because the meeting was the first of its kind in over forty years, much time was spent acquainting participants with past and planned activities at reactor and spallation facilities worldwide. As a result, the meeting had more of a conference flavor than one of a workshop. The general topics covered at the workshop included: Criteria for cold source design; neutronic predictions and performance; energy deposition and removal; engineering design, fabrication, and operation; material properties; radiation damage; instrumentation; safety; existing cold sources; and future cold sources.

Russell, G.J.; West, C.D. (comps.) (Los Alamos National Lab., NM (United States)) [comps.; Los Alamos National Lab., NM (United States)

1991-08-01T23:59:59.000Z

357

GEOMETRIC SOURCE SEPARATION: MERGING CONVOLUTIVE SOURCE  

E-Print Network [OSTI]

adaptive beamforming algorithms by a cross-power criteria, we gain new geometric source separation with convo- lutive blind source separation. We concentrate on cross-power spectral min- imization which is su to ambiguities in the choice of separating lters. There are in theory multiple lters that invert the room

Parra, Lucas C.

358

Aerosol Composition and Source Apportionment in the Mexico City...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

must be known to assess their effects on the environment, and specific particulate emissions sources should be identified to establish ef- 5 fective pollution control standards....

359

Chemistry & Biology, Vol. 9, 907913, August, 2002, 2002 Elsevier Science Ltd. All rights reserved. PII S1074-5521(02)00185-0 Controlling Protein Activity  

E-Print Network [OSTI]

for control of gene expression inside living cells [16]. Momchilo Vuyisich and Peter A. Beal1 Department

Beal, Peter A.

360

Field Description Source Who is providing this information? Please provide Name, telephone number, affiliation, email so that we may contact you if clarification is needed  

E-Print Network [OSTI]

the source to the crop Cultivation ­ Activities involved with maintaining growth such as fertilization and weed control Harvesting ­ Reaping the energy crop (biostock product) Collect/Transport to Processor descriptive name for this model Crop What biostock crops or other inputs into the bioenergy conversion

Note: This page contains sample records for the topic "activity controlled source" 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

Experiment Hazard Class 8.2 - Sealed Sources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2 -Sealed Sources 2 -Sealed Sources Applicability This hazard classification applies to all experiments involving the use of DOE exempt and non-exempt radioactive sealed sources. Experiment Category Experiments in this Experiment Hazard Class are always categorized as low risk experiments. Experiment Hazard Control Verification Statements Engineered Controls - None. Procedural Controls - Sealed sources must be secured when no experimenter is present. Design Reviews and Equipment Inspections - Sealed sources must be checked out from the Beamline Sealed Source Custodian and logged into the RMS System. Sources will be exempt or non-exempt as determined by RSO-HP personnel. Training - GERT (ESH 738) for exempt sealed sources ANL Radiation Worker I or II (ESH 700 or ESH 702) for non-exempt sealed

362

ATLBS EXTENDED SOURCE SAMPLE: THE EVOLUTION IN RADIO SOURCE MORPHOLOGY WITH FLUX DENSITY  

SciTech Connect (OSTI)

Based on the Australia Telescope Low Brightness Survey (ATLBS) we present a sample of extended radio sources and derive morphological properties of faint radio sources. One hundred nineteen radio galaxies form the ATLBS Extended Source Sample (ATLBS-ESS) consisting of all sources exceeding 30'' in extent and integrated flux densities exceeding 1 mJy. We give structural details along with information on galaxy identifications and source classifications. The ATLBS-ESS, unlike samples with higher flux-density limits, has almost equal fractions of FR-I and FR-II radio galaxies, with a large fraction of the FR-I population exhibiting 3C31-type structures. Significant asymmetry in lobe extents appears to be a common occurrence in the ATLBS-ESS FR-I sources compared with FR-II sources. We present a sample of 22 FR-Is at z > 0.5 with good structural information. The detection of several giant radio sources, with size exceeding 0.7 Mpc, at z > 1 suggests that giant radio sources are not less common at high redshifts. The ESS also includes a sample of 28 restarted radio galaxies. The relative abundance of dying and restarting sources is indicative of a model where radio sources undergo episodic activity in which an active phase is followed by a brief dying phase that terminates with restarting of the central activity; in any massive elliptical a few such activity cycles wherein adjacent events blend may constitute the lifetime of a radio source and such bursts of blended activity cycles may be repeated over the age of the host. The ATLBS-ESS includes a 2 Mpc giant radio galaxy with the lowest surface brightness lobes known to date.

Saripalli, L.; Subrahmanyan, R.; Thorat, K.; Ekers, R. D. [Raman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560080 (India); Hunstead, R. W.; Johnston, H. M.; Sadler, E. M., E-mail: lsaripal@rri.res.in [Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006 (Australia)

2012-04-01T23:59:59.000Z

363

UAL-BASED SIMULATION ENVIRONMENT FOR SPALLATION NEUTRON SOURCE RING.  

SciTech Connect (OSTI)

This paper outlines the major activities and applications of the Unified Accelerator Library environment for the Spallation Neutron Source (SNS) Ring.

MALITSKY,N.; SMITH,J.; WEI,J.

1999-03-29T23:59:59.000Z

364

Kentucky Department for Natural Resources and Environmental Protection permit application for air contaminant source: SRC-I Demonstruation Plant, Newman, Kentucky. Appendix B. Best available control technology (BACT) proposals. [Demonstration plant at Newman, KY  

SciTech Connect (OSTI)

The best available control technology (BACT) proposals for the following areas of the SRC-I demonstration plant are described: coal preparation and handling, SRC process and deashing, coke and liquid fuels (control of particles and hydrocarbon vapors), cryogenic systems and fuel gas purification (including sulfur recovery system and venting of gaseous wastes). (LTN)

Not Available

1980-11-21T23:59:59.000Z

365

Miniaturized cathodic arc plasma source  

DOE Patents [OSTI]

A cathodic arc plasma source has an anode formed of a plurality of spaced baffles which extend beyond the active cathode surface of the cathode. With the open baffle structure of the anode, most macroparticles pass through the gaps between the baffles and reflect off the baffles out of the plasma stream that enters a filter. Thus the anode not only has an electrical function but serves as a prefilter. The cathode has a small diameter, e.g. a rod of about 1/4 inch (6.25 mm) diameter. Thus the plasma source output is well localized, even with cathode spot movement which is limited in area, so that it effectively couples into a miniaturized filter. With a small area cathode, the material eroded from the cathode needs to be replaced to maintain plasma production. Therefore, the source includes a cathode advancement or feed mechanism coupled to cathode rod. The cathode also requires a cooling mechanism. The movable cathode rod is housed in a cooled metal shield or tube which serves as both a current conductor, thus reducing ohmic heat produced in the cathode, and as the heat sink for heat generated at or near the cathode. Cooling of the cathode housing tube is done by contact with coolant at a place remote from the active cathode surface. The source is operated in pulsed mode at relatively high currents, about 1 kA. The high arc current can also be used to operate the magnetic filter. A cathodic arc plasma deposition system using this source can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA)

2003-04-15T23:59:59.000Z

366

Wind is Energy (17 activities)  

K-12 Energy Lesson Plans and Activities Web site (EERE)

A nonfiction test to be read with primary student with basic information about wind as an energy source and hands-on, wind-related activities including

367

Ion Sources - Cyclotron  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Sources Sources The 88-Inch Cyclotron is fed by three Electron Cyclotron Resonance (ECR) high-charge-state ion sources, the ECR, the AECR, and VENUS, currently the most powerful ECR ion source in the world. Built to answer the demand for intense heavy ion beams, these high performance ion sources enable the 88-Inch Cyclotron to accelerate beams of ions from hydrogen to uranium. The ECR ion sources allow the efficient use of rare isotopes of stable elements, either from natural or enriched sources. A variety of metallic ion beams are routinely produced in our low temperature oven (up to 600°C) and our high temperature oven (up to 2100°C). Furthermore, the ability to produce "cocktails" (mixtures of beams) for the Berkeley Accelerator Space Effects (BASE) Facility adds tremendously to the flexibility of the 88-Inch Cyclotron.

368

Science Highlights 2008 | Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Finding the Controls of a Go-To Enzyme Finding the Controls of a Go-To Enzyme Finding the Controls of a Go-To Enzyme December 16, 2008 Research at three U.S. Department of Energy x-ray light sources, including the Advanced Photon Source, may provide the key to understanding how to better treat a wide array of disorders brought on by one of the body's workhorse molecular enzymes. Watching Liquids Separate at White Heat Watching Liquids Separate at White Heat October 30, 2008 Using temperatures approaching those found on the surface of the sun and intense x-ray beams from two synchrotron x-ray facilities, including the Advanced Photon Source at Argonne National Laboratory, researchers have observed liquids separating into two different states - one lighter and more perfect than the other - the first time the

369

Model Reduction for Power Electronics Systems with Multiple Heat Sources  

E-Print Network [OSTI]

Model Reduction for Power Electronics Systems with Multiple Heat Sources A. Augustin, T. Hauck, B demonstrates the model order re- duction procedures applied to semiconductor devices with multiple heat sources. The approach is demonstrated for a device with nine heat sources where some of them are perma- nently active

Paris-Sud XI, Université de

370

A family based tailored counselling to increase non-exercise physical activity in adults with a sedentary job and physical activity in their young children: design and methods of a year-long randomized controlled trial  

Science Journals Connector (OSTI)

Epidemiological evidence suggests that decrease in sedentary behaviour is beneficial for health. This family based randomized controlled trial examines whether face-to-face delivered counselling is effective i...

Taija Finni; Arja Skslahti; Arto Laukkanen; Arto Pesola

2011-12-01T23:59:59.000Z

371

High flux isotope reactor cold source preconceptual design study report  

SciTech Connect (OSTI)

In February 1995, the deputy director of Oak Ridge National Laboratory (ORNL) formed a group to examine the need for upgrades to the High Flux Isotope Reactor (HFIR) system in light of the cancellation of the Advanced Neutron Source Project. One of the major findings of this study was that there was an immediate need for the installation of a cold neutron source facility in the HFIR complex. The anticipated cold source will consist of a cryogenic LH{sub 2} moderator plug, a cryogenic pump system, a refrigerator that uses helium gas as a refrigerant, a heat exchanger to interface the refrigerant with the hydrogen loop, liquid hydrogen transfer lines, a gas handling system that includes vacuum lines, and an instrumentation and control system to provide constant system status monitoring and to maintain system stability. The scope of this project includes the development, design, safety analysis, procurement/fabrication, testing, and installation of all of the components necessary to produce a working cold source within an existing HFIR beam tube. This project will also include those activities necessary to transport the cold neutron beam to the front face of the present HFIR beam room. The cold source project has been divided into four phases: (1) preconceptual, (2) conceptual design and research and development (R and D), (3) detailed design and procurement, and (4) installation and operation. This report marks the conclusion of the preconceptual phase and establishes the concept feasibility. The information presented includes the project scope, the preliminary design requirements, the preliminary cost and schedule, the preliminary performance data, and an outline of the various plans for completing the project.

Selby, D.L.; Bucholz, J.A.; Burnette, S.E. [and others

1995-12-01T23:59:59.000Z

372

Spallation Neutron Source, SNS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Spallation Neutron Source Spallation Neutron Source Providing the most intense pulsed neutron beams in the world... Accumulator Ring Commissioning Latest Step for Spallation Neutron Source The Spallation Neutron Source, located at Oak Ridge National Laboratory, has passed another milestone on the way to completion this year--the commissioning of the proton accumulator ring. Brookhaven led the design and construction of the accumulator ring, which will allow an order of magnitude more beam power than any other facility in the world. The Spallation Neutron Source (SNS) is an accelerator-based neutron source being built in Oak Ridge, Tennessee, by the U.S. Department of Energy. The figure on the right shows a schematic of the accumulator ring and transport beam lines that are being designed and built by Brookhaven

373

Relating to monitoring ion sources  

DOE Patents [OSTI]

The apparatus and method provide techniques for monitoring the position on alpha contamination in or on items or locations. The technique is particularly applicable to pipes, conduits and other locations to which access is difficult. The technique uses indirect monitoring of alpha emissions by detecting ions generated by the alpha emissions. The medium containing the ions is moved in a controlled manner frog in proximity with the item or location to the detecting unit and the signals achieved over time are used to generate alpha source position information.

Orr, Christopher Henry (Calderbridge, GB); Luff, Craig Janson (Calderbridge, GB); Dockray, Thomas (Calderbridge, GB); Macarthur, Duncan Whittemore (Los Alamos, NM); Bounds, John Alan (Los Alamos, NM)

2002-01-01T23:59:59.000Z

374

A Novel Robot-Aided Therapy for Shoulder Rehabilitation after Stroke: Active-Assisted Control of the RehaArm Robot Using Electromyographic Signals  

Science Journals Connector (OSTI)

In this work, we introduced a novel experimental protocol for shoulder rehabilitation after stroke using RehaArm, a three Degrees of Freedom compliant robot. We implemented a control framework based on ... an ele...

Clara Genna; Strahinja Dosen

2014-01-01T23:59:59.000Z

375

E-Print Network 3.0 - activator protein-1 activation Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AHR airway hyperresponsiveness AP-1 activator... factor GAP GTPase-activating protein GDI guanine dissociation inhibitor GEF guanine exchange factor GM Source: Groningen,...

376

Sources and Electrodynamics  

Science Journals Connector (OSTI)

A new kind of particle theory is being explored, one that is intermediate in concept between the extremes of S matrix and field theory. It employs the methods of neither approach. There are no operators, and there is no appeal to analyticity in momentum space. It is a phenomenological theory, and cognizant that measurements are operations in space and time. Particles are defined realistically by reference to their creation or annihilation in suitable collisions. The source is introduced as an abstraction of the role played by all the other particles involved in such acts. Through the use of sources the production and detection of particles, as well as their interaction, are incorporated into the theoretical description. There is a creative principle that replaces the devices of other formulations. It is an insistence upon the generality of the space-time description of the coupling among sources that is inferred from a specific spatio-temporal arrangement, in which various particles propagate between sources. Standard quantum-mechanical and relativistic requirements, imposed on the source description of noninteracting particles, imply the existence of the two statistics and the connection with spin. In this situation sources are only required to emit and absorb the mass of the corresponding particle. Particle dynamics is introduced by an extension of the source concept. It is considered meaningful for a source to emit several particles with the same total quantum numbers as a single particle, if sufficient mass is available. This is most familiar as the photon radiation that accompanies the emission of charged particles. The new types of sources introduced in this way imply new couplings among sources, which supply still further varieties of sources. This proliferation of interactions spans the full dynamical content of the initial primitive interaction. The ambition of the phenomenological source theory is to represent all dynamical aspects of particles, within a certain context, by a suitable primitive interaction. This paper is devoted to the reconstruction of electrodynamics.

Julian Schwinger

1967-06-25T23:59:59.000Z

377

Publications | Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

research at the APS. It is the official source for listing APS-related journal articles, conference proceedings and papers, dissertations, books, book chapters, technical reports,...

378

Integrated Biological Control  

SciTech Connect (OSTI)

Biological control is any activity taken to prevent, limit, clean up, or remediate potential environmental, health and safety, or workplace quality impacts from plants, animals, or microorganisms. At Hanford the principal emphasis of biological control is to prevent the transport of radioactive contamination by biological vectors (plants, animals, or microorganisms), and where necessary, control and clean up resulting contamination. Other aspects of biological control at Hanford include industrial weed control (e.g.; tumbleweeds), noxious weed control (invasive, non-native plant species), and pest control (undesirable animals such as rodents and stinging insects, and microorganisms such as molds that adversely affect the quality of the workplace environment). Biological control activities may be either preventive (a priori) or in response to existing contamination spread (a posteriori). Surveillance activities, including ground, vegetation, flying insect, and other surveys, and a priori control actions, such as herbicide spraying and placing biological barriers, are important in preventing radioactive contamination spread. If surveillance discovers that biological vectors have spread radioactive contamination, a posteriori control measures, such as fixing contamination, followed by cleanup and removal of the contamination to an approved disposal location are typical response functions. In some cases remediation following the contamination cleanup and removal is necessary. Biological control activities for industrial weeds, noxious weeds and pests have similar modes of prevention and response.

JOHNSON, A.R.

2003-10-09T23:59:59.000Z

379

Integrated Biological Control  

SciTech Connect (OSTI)

Biological control is any activity taken to prevent, limit, clean up, or remediate potential environmental, health and safety, or workplace quality impacts from plants, animals, or microorganisms. At Hanford the principal emphasis of biological control is to prevent the transport of radioactive contamination by biological vectors (plants, animals, or microorganisms), and where necessary, control and clean up resulting contamination. Other aspects of biological control at Hanford include industrial weed control (e.g.; tumbleweeds), noxious weed control (invasive, non-native plant species), and pest control (undesirable animals such as rodents and stinging insects; and microorganisms such as molds that adversely affect the quality of the workplace environment). Biological control activities may be either preventive (apriori) or in response to existing contamination spread (aposteriori). Surveillance activities, including ground, vegetation, flying insect, and other surveys, and apriori control actions, such as herbicide spraying and placing biological barriers, are important in preventing radioactive contamination spread. If surveillance discovers that biological vectors have spread radioactive contamination, aposteriori control measures, such as fixing contamination, followed by cleanup and removal of the contamination to an approved disposal location are typical response functions. In some cases remediation following the contamination cleanup and removal is necessary. Biological control activities for industrial weeds, noxious weeds and pests have similar modes of prevention and response.

JOHNSON, A.R.

2002-09-01T23:59:59.000Z

380

Indoor air quality environmental information handbook: Combustion sources  

SciTech Connect (OSTI)

This environmental information handbook was prepared to assist both the non-technical reader (i.e., homeowner) and technical persons (such as researchers, policy analysts, and builders/designers) in understanding the current state of knowledge regarding combustion sources of indoor air pollution. Quantitative and descriptive data addressing the emissions, indoor concentrations, factors influencing indoor concentrations, and health effects of combustion-generated pollutants are provided. In addition, a review of the models, controls, and standards applicable to indoor air pollution from combustion sources is presented. The emphasis is on the residential environment. The data presented here have been compiled from government and privately-funded research results, conference proceedings, technical journals, and recent publications. It is intended to provide the technical reader with a comprehensive overview and reference source on the major indoor air quality aspects relating to indoor combustion activities, including tobacco smoking. In addition, techniques for determining potential concentrations of pollutants in residential settings are presented. This is an update of a 1985 study documenting the state of knowledge of combustion-generated pollutants in the indoor environment. 191 refs., 51 figs., 71 tabs.

Not Available

1990-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

Radiation Source Replacement Workshop  

SciTech Connect (OSTI)

This report summarizes a Radiation Source Replacement Workshop in Houston Texas on October 27-28, 2010, which provided a forum for industry and researchers to exchange information and to discuss the issues relating to replacement of AmBe, and potentially other isotope sources used in well logging.

Griffin, Jeffrey W.; Moran, Traci L.; Bond, Leonard J.

2010-12-01T23:59:59.000Z

382

source | OpenEI  

Open Energy Info (EERE)

source source Dataset Summary Description This dataset comes from the Energy Information Administration (EIA), and is part of the 2011 Annual Energy Outlook Report (AEO2011). This dataset is table 17, and contains only the reference case. The dataset uses quadrillion Btu. The data is broken down into marketed renewable energy, residential, commercial, industrial, transportation and electric power. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords Commercial Electric Power Industrial Renewable Energy Consumption Residential sector source transportation Data application/vnd.ms-excel icon AEO2011: Renewable Energy Consumption by Sector and Source- Reference Case (xls, 105 KiB) Quality Metrics Level of Review Peer Reviewed Comment

383

Neutron sources and applications  

SciTech Connect (OSTI)

Review of Neutron Sources and Applications was held at Oak Brook, Illinois, during September 8--10, 1992. This review involved some 70 national and international experts in different areas of neutron research, sources, and applications. Separate working groups were asked to (1) review the current status of advanced research reactors and spallation sources; and (2) provide an update on scientific, technological, and medical applications, including neutron scattering research in a number of disciplines, isotope production, materials irradiation, and other important uses of neutron sources such as materials analysis and fundamental neutron physics. This report summarizes the findings and conclusions of the different working groups involved in the review, and contains some of the best current expertise on neutron sources and applications.

Price, D.L. [ed.] [Argonne National Lab., IL (United States); Rush, J.J. [ed.] [National Inst. of Standards and Technology, Gaithersburg, MD (United States)

1994-01-01T23:59:59.000Z

384

Advanced Petroleum-Based fuels - Diesel Emissions Control (APBF...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Petroleum-Based fuels - Diesel Emissions Control (APBF-DEC) Activity Advanced Petroleum-Based fuels - Diesel Emissions Control (APBF-DEC) Activity 2003 DEER Conference...

385

2013 IREP Symposium-Bulk Power System Dynamics and Control -IX (IREP), August 25-30, 2013, Rethymnon, Greece Active network management: planning under  

E-Print Network [OSTI]

]. Such incentives have resulted in the on-going installation of wind and solar power generation resources2013 IREP Symposium-Bulk Power System Dynamics and Control -IX (IREP), August 25-30, 2013 In Europe, concern about the environmental impact of the electricity industry is currently driving

Ernst, Damien

386

Conditional Depletion of the Chlamydomonas Chloroplast ClpP Protease Activates Nuclear Genes Involved in Autophagy and Plastid Protein Quality Control  

Science Journals Connector (OSTI)

...intense peaks. Four different search engines were employed to achieve spectra-to-peptide...could be recognized by all four search engines. Protein abundance was quantified using...control in noncoding RNA biogenesis. Cold Spring Harb. Symp. Quant. Biol. 71 : 505-511...

Silvia Ramundo; David Casero; Timo Mühlhaus; Dorothea Hemme; Frederik Sommer; Michèle Crèvecoeur; Michèle Rahire; Michael Schroda; Jannette Rusch; Ursula Goodenough; Matteo Pellegrini; Maria Esther Perez-Perez; José Luis Crespo; Olivier Schaad; Natacha Civic; Jean David Rochaix

2014-05-30T23:59:59.000Z

387

Tunable terahertz radiation source  

SciTech Connect (OSTI)

Terahertz radiation source and method of producing terahertz radiation, said source comprising a junction stack, said junction stack comprising a crystalline material comprising a plurality of self-synchronized intrinsic Josephson junctions; an electrically conductive material in contact with two opposing sides of said crystalline material; and a substrate layer disposed upon at least a portion of both the crystalline material and the electrically-conductive material, wherein the crystalline material has a c-axis which is parallel to the substrate layer, and wherein the source emits at least 1 mW of power.

Boulaevskii, Lev; Feldmann, David M; Jia, Quanxi; Koshelev, Alexei; Moody, Nathan A

2014-01-21T23:59:59.000Z

388

Ultracold Electron Source  

Science Journals Connector (OSTI)

We propose a technique for producing electron bunches that has the potential for advancing the state-of-the-art in brightness of pulsed electron sources by orders of magnitude. In addition, this method leads to femtosecond bunch lengths without the use of ultrafast lasers or magnetic compression. The electron source we propose is an ultracold plasma with electron temperatures down to 10K, which can be fashioned from a cloud of laser-cooled atoms by photoionization just above threshold. Here we present results of simulations in a realistic setting, showing that an ultracold plasma has an enormous potential as a bright electron source.

B. J. Claessens; S. B. van der Geer; G. Taban; E. J. D. Vredenbregt; O. J. Luiten

2005-10-12T23:59:59.000Z

389

Particles and Sources  

Science Journals Connector (OSTI)

It is proposed that the phenomenological theory of particles be based on the source concept, which is abstracted from the physical possibility of creating or annihilating any particle in a suitable collision. The source representation displays both the momentum and the space-time characteristics of particle behavior. Topics discussed include: spin and statistics, charge and the Euclidean postulate, massless particles, and SU3 and spin. It is emphasized that the source description is logically independent of hypotheses concerning the fundamental nature of particles.

Julian Schwinger

1966-12-23T23:59:59.000Z

390

Role of the mTORC1 Complex in Satellite Cell Activation by RNA-Induced Mitochondrial Restoration: Dual Control of Cyclin D1 through MicroRNAs  

Science Journals Connector (OSTI)

...on Ccnd1 expression prompted us to examine other regulatory...Fig. 1), reflecting an energy crisis (in terms of high AMPK...cyclin D1 gene by CpG methylation status in promoter region. J. Biol...AMP-activated protein kinase-an energy sensor that regulates all aspects...

Sukanta Jash; Gunjan Dhar; Utpalendu Ghosh; Samit Adhya

2014-07-21T23:59:59.000Z

391

Property:ExpActivityDateEnd | Open Energy Information  

Open Energy Info (EERE)

ExpActivityDateEnd ExpActivityDateEnd Jump to: navigation, search Property Name ExpActivityDateEnd Property Type Date Description Date or year exploration activity ended. Pages using the property "ExpActivityDateEnd" Showing 25 pages using this property. (previous 25) (next 25) 2 2-M Probe Survey At Salt Wells Area (Coolbaugh, Et Al., 2006) + 2006 + 2-M Probe Survey At Salt Wells Area (Skord, Et Al., 2011) + 2011 + A Aerial Photography At Coso Geothermal Area (1968-1971) + 1971 + C Compound and Elemental Analysis At Salt Wells Area (Coolbaugh, Et Al., 2006) + 2005 + Compound and Elemental Analysis At Salt Wells Area (Shevenell & Garside, 2003) + 2002 + Conceptual Model At Coso Geothermal Area (2005-2007) + 2007 + Controlled Source Frequency-Domain Magnetics At Salt Wells Area (Montgomery, Et Al., 2005) + 2004 +

392

Cyber Incidents Involving Control Systems  

SciTech Connect (OSTI)

The Analysis Function of the US-CERT Control Systems Security Center (CSSC) at the Idaho National Laboratory (INL) has prepared this report to document cyber security incidents for use by the CSSC. The description and analysis of incidents reported herein support three CSSC tasks: establishing a business case; increasing security awareness and private and corporate participation related to enhanced cyber security of control systems; and providing informational material to support model development and prioritize activities for CSSC. The stated mission of CSSC is to reduce vulnerability of critical infrastructure to cyber attack on control systems. As stated in the Incident Management Tool Requirements (August 2005) ''Vulnerability reduction is promoted by risk analysis that tracks actual risk, emphasizes high risk, determines risk reduction as a function of countermeasures, tracks increase of risk due to external influence, and measures success of the vulnerability reduction program''. Process control and Supervisory Control and Data Acquisition (SCADA) systems, with their reliance on proprietary networks and hardware, have long been considered immune to the network attacks that have wreaked so much havoc on corporate information systems. New research indicates this confidence is misplaced--the move to open standards such as Ethernet, Transmission Control Protocol/Internet Protocol, and Web technologies is allowing hackers to take advantage of the control industry's unawareness. Much of the available information about cyber incidents represents a characterization as opposed to an analysis of events. The lack of good analyses reflects an overall weakness in reporting requirements as well as the fact that to date there have been very few serious cyber attacks on control systems. Most companies prefer not to share cyber attack incident data because of potential financial repercussions. Uniform reporting requirements will do much to make this information available to Department of Homeland Security (DHS) and others who require it. This report summarizes the rise in frequency of cyber attacks, describes the perpetrators, and identifies the means of attack. This type of analysis, when used in conjunction with vulnerability analyses, can be used to support a proactive approach to prevent cyber attacks. CSSC will use this document to evolve a standardized approach to incident reporting and analysis. This document will be updated as needed to record additional event analyses and insights regarding incident reporting. This report represents 120 cyber security incidents documented in a number of sources, including: the British Columbia Institute of Technology (BCIT) Industrial Security Incident Database, the 2003 CSI/FBI Computer Crime and Security Survey, the KEMA, Inc., Database, Lawrence Livermore National Laboratory, the Energy Incident Database, the INL Cyber Incident Database, and other open-source data. The National Memorial Institute for the Prevention of Terrorism (MIPT) database was also interrogated but, interestingly, failed to yield any cyber attack incidents. The results of this evaluation indicate that historical evidence provides insight into control system related incidents or failures; however, that the limited available information provides little support to future risk estimates. The documented case history shows that activity has increased significantly since 1988. The majority of incidents come from the Internet by way of opportunistic viruses, Trojans, and worms, but a surprisingly large number are directed acts of sabotage. A substantial number of confirmed, unconfirmed, and potential events that directly or potentially impact control systems worldwide are also identified. Twelve selected cyber incidents are presented at the end of this report as examples of the documented case studies (see Appendix B).

Robert J. Turk

2005-10-01T23:59:59.000Z

393

National Synchrotron Light Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Environmental Assessment Environmental Assessment Proposed Upgrade and Improvement of the National Synchrotron Light Source Complex at Brookhaven National Laboratory, Upton, New York This Environmental Assessment addresses the proposed action by the U.S. Department of Energy to upgrade the facilities of the National Synchrotron Light Source Complex, namely the National Synchrotron Light Source (NSLS), the Accelerator Test Facility and the Source Development Laboratory. The environmental effects of a No-Action Alternative as well as a Proposed Action are evaluated in the Environmental Assessment. The “NSLS Environmental Assessment Fact Sheet” link below leads to a one-page summary of the Environmental Assessment. The “NSLS Environmental Assessment” link below leads to the whole 41-page

394

SOURCE SELECTION INFORMATION -  

Office of Environmental Management (EM)

311 of P.L. 112-74 and as continued in P.L. 113-6 in excess of 1,000,000. This information is source selection information related to the conduct of a Federal agency...

395

SOURCE SELECTION INFORMATION -  

Office of Environmental Management (EM)

budget authority that is not fully funded under P.L. 113-76 Section 301(c). This information is source selection information related to the conduct of a Federal agency...

396

National Synchrotron Light Source  

ScienceCinema (OSTI)

A tour of Brookhaven's National Synchrotron Light Source (NSLS). The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviole

None

2010-01-08T23:59:59.000Z

397

ION SOURCES FOR CYCLOTRONS  

E-Print Network [OSTI]

These utilize lasers, plasma focus, sparks, and ex plodingextractor voltage A plasma focus device has been used byf n a s Fig. 22: The plasma focus high charge state source

Clark, D.J.

2010-01-01T23:59:59.000Z

398

Electron Beam Ion Sources  

E-Print Network [OSTI]

Electron beam ion sources (EBISs) are ion sources that work based on the principle of electron impact ionization, allowing the production of very highly charged ions. The ions produced can be extracted as a DC ion beam as well as ion pulses of different time structures. In comparison to most of the other known ion sources, EBISs feature ion beams with very good beam emittances and a low energy spread. Furthermore, EBISs are excellent sources of photons (X-rays, ultraviolet, extreme ultraviolet, visible light) from highly charged ions. This chapter gives an overview of EBIS physics, the principle of operation, and the known technical solutions. Using examples, the performance of EBISs as well as their applications in various fields of basic research, technology and medicine are discussed.

Zschornacka, G; Thorn, A

2013-01-01T23:59:59.000Z

399

LED lamp color control system and method  

SciTech Connect (OSTI)

An LED lamp color control system and method including an LED lamp having an LED controller 58; and a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 determines whether the LED source 80 is in a feedback controllable range, stores measured optical flux for the LED source 80 when the LED source 80 is in the feedback controllable range, and bypasses storing the measured optical flux when the LED source 80 is not in the feedback controllable range.

Gaines, James; Clauberg, Bernd; Van Erp, Josephus A.M.

2013-02-05T23:59:59.000Z

400

Spallation Neutron Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

D/gim D/gim Spallation Neutron Source SNS is an accelerator-based neutron source. This one-of-a-kind facility pro- vides the most intense pulsed neutron beams in the world. When ramped up to its full beam power of 1.4 MW, SNS will be eight times more powerful than today's best facility. It will give researchers more detailed snapshots of the smallest samples of physical and biological materials than ever before

Note: This page contains sample records for the topic "activity controlled source" 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

Magnetron sputtering source  

DOE Patents [OSTI]

A magnetron sputtering source for sputtering coating substrates includes a high thermal conductivity electrically insulating ceramic and magnetically attached sputter target which can eliminate vacuum sealing and direct fluid cooling of the cathode assembly. The magnetron sputtering source design results in greater compactness, improved operating characteristics, greater versatility, and low fabrication cost. The design easily retrofits most sputtering apparatuses and provides for safe, easy, and cost effective target replacement, installation, and removal.

Makowiecki, Daniel M. (Livermore, WA); McKernan, Mark A. (Livermore, CA); Grabner, R. Fred (Brentwood, CA); Ramsey, Philip B. (Livermore, CA)

1994-01-01T23:59:59.000Z

402

Field emission electron source  

DOE Patents [OSTI]

A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

2000-01-01T23:59:59.000Z

403

National Synchrotron Light Source  

ScienceCinema (OSTI)

A tour of Brookhaven's National Synchrotron Light Source (NSLS), hosted by Associate Laboratory Director for Light Sources, Stephen Dierker. The NSLS is one of the world's most widely used scientific research facilities, hosting more than 2,500 guest researchers each year. The NSLS provides intense beams of infrared, ultraviolet, and x-ray light for basic and applied research in physics, chemistry, medicine, geophysics, environmental, and materials sciences.

BNL

2009-09-01T23:59:59.000Z

404

E-Print Network 3.0 - active trail protein Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

already declines the proteolytic activity tremendously and improves protein production... active. Hence, the solubility and accumulation level of ... Source: Groningen,...

405

Status Update on Action 2a: Implementation Handbook for Activity...  

Broader source: Energy.gov (indexed) [DOE]

a: Implementation Handbook for Activity-level Work Planning and Control Status Update on Action 2a: Implementation Handbook for Activity-level Work Planning and Control Addthis...

406

BrightSource | Open Energy Information  

Open Energy Info (EERE)

BrightSource BrightSource Jump to: navigation, search Logo: BrightSource Name BrightSource Address 1999 Harrison Street Place Oakland, California Zip 94612 Sector Solar Product CSP developer Year founded 1984 Number of employees 51-200 Website http://www.brightsourceenergy. Coordinates 37.8020203652°, -122.270536423° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.8020203652,"lon":-122.270536423,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

407

Active noise within the generating/pumping groups of a large hydroelectric plant  

Science Journals Connector (OSTI)

This work is related to a feasibility study for the implementation of an active noise control system to reduce the hydraulic turbomachines noise in the Presenzano power plant. Previous studies showed that interested turbines are low frequencies noise sources generating pure tones at 150 and 200 Hz (third and fourth harmonics of the turbines BPF). At these frequencies passive noise control systems are ineffective in front of relevant costs and an active approach was so decided to be tested. In accordance with a classical architecture the preliminary system was composed of four error microphones four secondary noise sources and a digital controller implementing an adaptive digital filter. Main performed activities could be identified through four successive steps: (i) analysis of the turbomachines generated primary field levels and space distribution (ii) secondary sources generated noise field measurement ten different loudspeakers locations were investigated at this stage; (iii) sensor and actuator locations optimization by the use of a genetic algorithms procedure and (iv) active noise control tests. A mean reduction of 15 dB at 150 Hz and 7.5 dB at 200 Hz was measured at the error sensors during these tests revealing the good opportunities of such an approach but also the opportune improvement to pass at a practical implementation.

Leonardo Lecce; Massimo Viscardi; Bruno Maja; Vincenzo Limone; Mario DIschia; Francesco Di Maso

1999-01-01T23:59:59.000Z

408

Mobile Robotics Activities in DOE Laboratories  

SciTech Connect (OSTI)

This paper will briefly outline major activities in Department of Energy (DOE) Laboratories focused on mobile platforms, both Unmanned Ground Vehicles (UGVs) as well as Unmanned Air Vehicles (UAVs). The activities will be discussed in the context of the science and technology construct used by the DOE Technology Roadmap for Robotics and Intelligent Machines (RIM)1 published in 1998; namely, Perception, Reasoning, Action, and Integration. The activities to be discussed span from research and development to deployment in field operations. The activities support customers in other agencies. The discussion of "perception" will include hyperspectral sensors, complex patterns discrimination, multisensor fusion and advances in LADAR technologies, including real-world perception. "Reasoning" activities to be covered include cooperative controls, distributed systems, ad-hoc networks, platform-centric intelligence, and adaptable communications. The paper will discuss "action" activities such as advanced mobility and various air and ground platforms. In the RIM construct, "integration" includes the Human-Machine Integration. Accordingly the paper will discuss adjustable autonomy and the collaboration of operator(s) with distributed UGVs and UAVs. Integration also refers to the applications of these technologies into systems to perform operations such as perimeter surveillance, large-area monitoring and reconnaissance. Unique facilities and test beds for advanced mobile systems will be described. Given that this paper is an overview, rather than delve into specific detail in these activities, other more exhaustive references and sources will be cited extensively.

Ron Lujan; Jerry Harbour; John T. Feddema; Sharon Bailey; Jacob Barhen; David Reister

2005-03-01T23:59:59.000Z

409

16 - Alternative energy sources  

Science Journals Connector (OSTI)

Publisher Summary This chapter describes alternative energy sources. The substantial potential of the world's alternative energy sources are still comparatively little exploited, even in countries with limited conventional energy resources. Although this interest was heightened during the mid-1970s because of the oil price shock, most of the technologies are still at an early stage of development. While much research and development work has been undertaken by governments and industry throughout the world, the technical transfer process is comparatively slow. There are a number of abstracting services available in both the United States and the United Kingdom devoted wholly or in part to alternative energy sources. The most useful of the general abstract journals are the Renewable Energy Bulletin, Energy Review, and Energy Abstracts for Policy Analysis. The principal source of information for all aspects of alternative energy sources is the Energy Data Base, established in 1974 b the U.S. Department of Energy, which is the online version of Energy Research Abstracts. There are very few good comprehensive books covering all the alternative energy sources, perhaps understandably given the scope of the subject.

Alan Heyes

1988-01-01T23:59:59.000Z

410

Analysis of a Nuclear Accident: Fission and Activation Product Releases from the Fukushima Daiichi Nuclear Facility as Remote Indicators of Source Identification, Extent of Release, and State of Damaged Spent Nuclear Fuel  

SciTech Connect (OSTI)

Measurements of several radionuclides within environmental samples taken from the Fukushima Daiichi nuclear facility and reported on the Tokyo Electric Power Company website following the recent tsunami-initiated catastrophe were evaluated for the purpose of identifying the source term, reconstructing the release mechanisms, and estimating the extent of the release. 136Cs/137Cs and 134Cs/137Cs ratios identified Units 1-3 as the major source of radioactive contamination to the surface soil close to the facility. A trend was observed between the fraction of the total core inventory released for a number of fission product isotopes and their corresponding Gibbs Free Energy of formation for the primary oxide form of the isotope, suggesting that release was dictated primarily by chemical volatility driven by temperature and reduction potential within the primary containment vessels of the vented reactors. The absence of any major fractionation beyond volatilization suggested all coolant had evaporated by the time of venting. High estimates for the fraction of the total inventory released of more volatile species (Te, Cs, I) indicated the damage to fuel bundles was likely extensive, minimizing any potential containment due to physical migration of these species through the fuel matrix and across the cladding wall. 238Pu/239,240Pu ratios close-in and at 30 km from the facility indicated that the damaged reactors were the major contributor of Pu to surface soil at the source but that this contribution likely decreased rapidly with distance from the facility. The fraction of the total Pu inventory released to the environment from venting units 1 and 3 was estimated to be ~0.003% based upon Pu/Cs isotope ratios relative to the within-reactor modeled inventory prior to venting and was consistent with an independent model evaluation that considered chemical volatility based upon measured fission product release trends. Significant volatile radionuclides within the spent fuel at the time of venting but not as yet observed and reported within environmental samples are suggested as potential analytes of concern for future environmental surveys around the site.

Schwantes, Jon M.; Orton, Christopher R.; Clark, Richard A.

2012-09-10T23:59:59.000Z

411

DOE standard: Radiological control  

SciTech Connect (OSTI)

The Department of Energy (DOE) has developed this Standard to assist line managers in meeting their responsibilities for implementing occupational radiological control programs. DOE has established regulatory requirements for occupational radiation protection in Title 10 of the Code of Federal Regulations, Part 835 (10 CFR 835), ``Occupational Radiation Protection``. Failure to comply with these requirements may lead to appropriate enforcement actions as authorized under the Price Anderson Act Amendments (PAAA). While this Standard does not establish requirements, it does restate, paraphrase, or cite many (but not all) of the requirements of 10 CFR 835 and related documents (e.g., occupational safety and health, hazardous materials transportation, and environmental protection standards). Because of the wide range of activities undertaken by DOE and the varying requirements affecting these activities, DOE does not believe that it would be practical or useful to identify and reproduce the entire range of health and safety requirements in this Standard and therefore has not done so. In all cases, DOE cautions the user to review any underlying regulatory and contractual requirements and the primary guidance documents in their original context to ensure that the site program is adequate to ensure continuing compliance with the applicable requirements. To assist its operating entities in achieving and maintaining compliance with the requirements of 10 CFR 835, DOE has established its primary regulatory guidance in the DOE G 441.1 series of Guides. This Standard supplements the DOE G 441.1 series of Guides and serves as a secondary source of guidance for achieving compliance with 10 CFR 835.

Not Available

1999-07-01T23:59:59.000Z

412

VAV Reheat Versus Active Chilled Beams and DOAS  

E-Print Network [OSTI]

and Pollutant Source Control) This credit is generally achievable with a VAVR system since it requires that all supply air

Stein, Jeff; Taylor, Steven

2013-01-01T23:59:59.000Z

413

Effect of communicating genetic and phenotypic risk for type 2 diabetes in combination with lifestyle advice on objectively measured physical activity: protocol of a randomised controlled trial  

E-Print Network [OSTI]

, Schulze MB: Risk assessment tools for identifying individuals at risk of developing type 2 diabetes. Epidemiologic Rev 2011, 33:4662. 18. Noble D, Mathur R, Dent T, Meads C, Greenhalgh T: Risk models and scores for type 2 diabetes: systematic review. Br... of communicating personalized genetic risk information on perceived control over the risk: a systematic review. Genet Med 2011, 13:273. 26. Bates BR, Templeton A, Achter PJ, Harris TM, Condit CM: What does "a gene for heart disease" mean? A focus group study...

Godino, Job G; van Sluijs, Esther MF; Marteau, Theresa M; Sutton, Stephen; Sharp, Stephen J; Griffin, Simon J

2012-06-18T23:59:59.000Z

414

Student Activities Student Activities  

E-Print Network [OSTI]

with Solar Energy? Activity B How do Atmospheres Produce their Effect Upon Surface Temperatures? Activity C and populations found in developing countries in Asia, Africa and Latin America. Figure 4.3 illustrates the actual

415

Coherence-controlled holographic microscope  

Science Journals Connector (OSTI)

Transmitted-light coherence-controlled holographic microscope (CCHM) based on an off-axis achromatic interferometer allows us to use light sources of arbitrary degree of temporal and...

Kolman, Pavel; Chmelk, Radim

2010-01-01T23:59:59.000Z

416

CLEERS Activities: Diesel Soot Filter Characterization & NOx...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Control Fundamentals CLEERS Activities: Diesel Soot Filter Characterization & NOx Control Fundamentals 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit...

417

Opacity meter for monitoring exhaust emissions from non-stationary sources  

DOE Patents [OSTI]

Method and apparatus for determining the opacity of exhaust plumes from moving emissions sources. In operation, a light source is activated at a time prior to the arrival of a diesel locomotive at a measurement point, by means of a track trigger switch or the Automatic Equipment Identification system, such that the opacity measurement is synchronized with the passage of an exhaust plume past the measurement point. A beam of light from the light source passes through the exhaust plume of the locomotive and is detected by a suitable detector, preferably a high-rate photodiode. The light beam is well-collimated and is preferably monochromatic, permitting the use of a narrowband pass filter to discriminate against background light. In order to span a double railroad track and provide a beam which is substantially stronger than background, the light source, preferably a diode laser, must provide a locally intense beam. A high intensity light source is also desirable in order to increase accuracy at the high sampling rates required. Also included is a computer control system useful for data acquisition, manipulation, storage and transmission of opacity data and the identification of the associated diesel engine to a central data collection center.

Dec, John Edward (Livermore, CA)

2000-01-01T23:59:59.000Z

418

Pulsed ion beam source  

DOE Patents [OSTI]

An improved pulsed ion beam source is disclosed having a new biasing circuit for the fast magnetic field. This circuit provides for an initial negative bias for the field created by the fast coils in the ion beam source which pre-ionize the gas in the source, ionize the gas and deliver the gas to the proper position in the accelerating gap between the anode and cathode assemblies in the ion beam source. The initial negative bias improves the interaction between the location of the nulls in the composite magnetic field in the ion beam source and the position of the gas for pre-ionization and ionization into the plasma as well as final positioning of the plasma in the accelerating gap. Improvements to the construction of the flux excluders in the anode assembly are also accomplished by fabricating them as layered structures with a high melting point, low conductivity material on the outsides with a high conductivity material in the center. 12 figs.

Greenly, J.B.

1997-08-12T23:59:59.000Z

419

Building Technologies Office: Air-Source Integrated Heat Pump Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Air-Source Integrated Air-Source Integrated Heat Pump Research Project to someone by E-mail Share Building Technologies Office: Air-Source Integrated Heat Pump Research Project on Facebook Tweet about Building Technologies Office: Air-Source Integrated Heat Pump Research Project on Twitter Bookmark Building Technologies Office: Air-Source Integrated Heat Pump Research Project on Google Bookmark Building Technologies Office: Air-Source Integrated Heat Pump Research Project on Delicious Rank Building Technologies Office: Air-Source Integrated Heat Pump Research Project on Digg Find More places to share Building Technologies Office: Air-Source Integrated Heat Pump Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research

420

Building Technologies Office: Ground Source Heap Pump Data Mining Research  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Ground Source Heap Pump Ground Source Heap Pump Data Mining Research Project to someone by E-mail Share Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on Facebook Tweet about Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on Twitter Bookmark Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on Google Bookmark Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on Delicious Rank Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on Digg Find More places to share Building Technologies Office: Ground Source Heap Pump Data Mining Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities

Note: This page contains sample records for the topic "activity controlled source" 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

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Photon Source Parameters Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

422

Source Emissions and Transport  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

electron micrograph image, Lara Gundel with instrumentation electron micrograph image, Lara Gundel with instrumentation Source Emissions and Transport Investigators conduct research here to characterize and better understand the sources of airborne volatile, semi-volatile and particulate organic pollutants in the indoor environment. This research includes studies of the physical and chemical processes that govern indoor air pollutant concentrations and exposures. The motivation is to contribute to the reduction of potential human health effects. Contacts Randy Maddalena RLMaddalena@lbl.gov (510) 486-4924 Mark Mendell MJMendell@lbl.gov (510) 486-5762 Links Pollutant Sources, Dynamics and Chemistry Group Batteries and Fuel Cells Buildings Energy Efficiency Electricity Grid Energy Analysis Energy Technologies Environmental Impacts

423

Heat Source Lire,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Source Lire, Source Lire, (liayrICS-25 ) tooling Tulles (Ai 1,06:1) - 11 (31.118 Module Stack Thermoelectric Module:, (14) ltcal L/Mr r a it i lli tisli Block Mounting Interface MMRTG Design Housing (At 2219) Fin (At Go63) Thermal Insulation (Min-K & Microtherm) Space Radioisotope Power Systems Multi-Mission Radioisotope Thermoelectric Generator January 2008 What is a Multi-Mission Radioisotope Thermoelectric Generator? Space exploration missions require safe, reliable, long-lived power systems to provide electricity and heat to spacecraft and their science instruments. A uniquely capable source of power is the radioisotope thermoelectric generator (RTG) - essentially a nuclear battery that reliably converts heat into electricity. The Department of Energy and NASA are developing

424

Source Selection Guide  

Broader source: Energy.gov (indexed) [DOE]

Source Selection Source Selection Overview This chapter provides guidance to the acquisition team on conducting source selection in accordance with Part 15 of the Federal Acquisition Regulation (FAR). Background The mid 1990's was a time of significant change in many areas of procurement, particularly in the introduction of new tools and processes that help the procurement professional better meet the needs of demanding customers. The passage of the Federal Acquisition Streamlining Act in 1994 and the Federal Acquisition Reform Act in 1995 , coupled with Government-wide and Department of Energy (DOE) contract reform efforts not only changed traditional procurement processes but also changed the role of the procurement professional. No longer are procurement

425

ISG8-RF Sources  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

RF Sources - (WG3) RF Sources - (WG3) Orange Rm Yong Ho Chin, Christopher Nantista, and Sami G. Tantawi Parallel Sessions: Working Groups: WG1: Parameters, Design, Instrumentation and Tuning WG2: Damping Rings and ATF WG3: RF Sources WG4:Structures WG5: Ground Motion; Site Requirements and Investigations Monday Morning 9:00-10:30 Plenary Coffee Break 11:00-12:00 Planning Session. Monday Afternoon 13:30-15:30 High Gradient Issues (Joint with working group 4) Coffee Break 16:00-16:30 The 8-Pack Project -- D. Atkinson 16:30-17:30 High Gradient Issues and Discussions Continued. Tuesday Morning 9:30-10:30 Klystrons 9:30-10:00 Status of PPM Klystron Development for JLC -- Y. H. Chin 10:00-10:30 Design of 150MW Multi-Beam Klystron -- S. Matsumoto Coffee Break 11:00-11:30 Klystron Development at SLAC -- G. Caryotakis

426

Sources and Magnetic Charge  

Science Journals Connector (OSTI)

A beginning is made on a phenomenological reconstruction of the theory of magnetic charge. The concept is introduced by reference to a new kind of photon source. It is shown that photon exchange between different source types is relativistically invariant. The space-time generalization of this coupling involves an arbitrary vector. The only way to remove a corresponding arbitrariness of physical predictions is to recognize the localization of charge and impose a charge quantization condition. The consideration of particles that carry both kinds of charge loosens the charge restrictions. The great strength of magnetic attraction indicated by g24?=4(137) suggests that ordinary matter is a magnetically neutral composite of magnetically charged particles that carry fractional electric charge. There is a brief discussion of such a magnetic model of strongly interacting particles, which makes contact with empirical classification schemes. Additional remarks on notation, and on the general nature of the source description, are appended.

Julian Schwinger

1968-09-25T23:59:59.000Z

427

National Synchrotron Light Source II Project Progress Report  

E-Print Network [OSTI]

, power supply procurement, BPM electronics testing, and controls system design. With details of technical'S ASSESSMENT FEBRUARY 2010 OVERALL ASSESSMENT The National Synchrotron Light Source II project maintained excellent technical progress and satisfactory cost and schedule performance. The DOE Independent Project

Ohta, Shigemi

428

Tsunami Information Sources  

E-Print Network [OSTI]

Hawaii," Engineering Geology Case Histories, GeologicalHerron," In Oral History of Coastal Engineering ActivitiesBeach; Its History from a Coastal Engineering Perspective,

Wiegel, Robert L

2005-01-01T23:59:59.000Z

429

OLED area illumination source  

DOE Patents [OSTI]

The present invention relates to an area illumination light source comprising a plurality of individual OLED panels. The individual OLED panels are configured in a physically modular fashion. Each OLED panel comprising a plurality of OLED devices. Each OLED panel comprises a first electrode and a second electrode such that the power being supplied to each individual OLED panel may be varied independently. A power supply unit capable of delivering varying levels of voltage simultaneously to the first and second electrodes of each of the individual OLED panels is also provided. The area illumination light source also comprises a mount within which the OLED panels are arrayed.

Foust, Donald Franklin (Scotia, NY); Duggal, Anil Raj (Niskayuna, NY); Shiang, Joseph John (Niskayuna, NY); Nealon, William Francis (Gloversville, NY); Bortscheller, Jacob Charles (Clifton Park, NY)

2008-03-25T23:59:59.000Z

430

Synchronization System for Next Generation Light Sources  

SciTech Connect (OSTI)

An alternative synchronization technique one that would allow explicit control of the pulse train including its repetition rate and delay is clearly desired. We propose such a scheme. Our method is based on optical interferometry and permits synchronization of the pulse trains generated by two independent mode-locked lasers. As the next generation x-ray sources will be driven by a clock signal derived from a mode-locked optical source, our technique will provide a way to synchronize x-ray probe with the optical pump pulses.

Zavriyev, Anton

2014-03-27T23:59:59.000Z

431

DOE & Strategic Sourcing "New Challenges, New Opportunities"  

Broader source: Energy.gov (indexed) [DOE]

& Strategic Sourcing & Strategic Sourcing "New Challenges, New Opportunities" What is it? NNSA Model DOE Future Activities Bill Marks, Commodity Manager, NNSA Supply Chain Management Center Gary Lyttek, HQ Business Source Manager, NNSA "Strategic Sourcing" 2 Few, bigger buys? Anti-Small Business? An Opportunity! Strategic Sourcing - a Definition * Strategic Sourcing is an institutional procurement process that continuously improves and re-evaluates the purchasing activities of a company. In a production environment, it is often considered one component of supply chain management ...however, it applies as well to services or capital. 3 Strategic Sourcing Process Models 4 My Personal Favorite... 5 The Basic Process 1. Assess a company's current spend

432

Free/Open Source Software Development: Recent Research  

E-Print Network [OSTI]

· Cooperation, coordination and control · Alliances and social networking across projects · FOSS as multi-project/open source software development? · Free (as in "freedom" or liberty) vs. open source ­ Freedom to access #12;Institute for Software Research, UCI 6 FOSSD Project Characteristics · Operational code early

Scacchi, Walt

433

Analysis of Solar Two Heliostat Tracking Error Sources  

SciTech Connect (OSTI)

This paper explores the geometrical errors that reduce heliostat tracking accuracy at Solar Two. The basic heliostat control architecture is described. Then, the three dominant error sources are described and their effect on heliostat tracking is visually illustrated. The strategy currently used to minimize, but not truly correct, these error sources is also shown. Finally, a novel approach to minimizing error is presented.

Jones, S.A.; Stone, K.W.

1999-01-28T23:59:59.000Z

434

Analysis of Solar Two heliostat tracking error sources  

SciTech Connect (OSTI)

This paper explores the geometrical errors that reduce heliostat tracking accuracy at Solar Two. The basic heliostat control architecture is described. Then, the three dominant error sources are described and their effect on heliostat tracking is visually illustrated. The strategy currently used to minimize, but not truly correct, these error sources is also shown. Finally, a novel approach to minimizing error is presented.

Stone, K.W.; Jones, S.A.

1999-07-01T23:59:59.000Z

435

March 29, 2007 Mobile Source Air Toxics Analysis  

E-Print Network [OSTI]

, 6 were identified as significant contributors to national emissions of hazardous air pollutants EPA Mobile Source Air Toxics Rules March 2001 rule relied on existing control programs (Tier 2March 29, 2007 Mobile Source Air Toxics Analysis for FHWA Projects Jeff Houk FHWA Resource Center

Minnesota, University of

436

Strategic Sourcing | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Strategic Sourcing Strategic Sourcing Strategic Sourcing Energy Wide Strategic Sourcing (EWSS) DOE leadership has recognized that benefits could be achieved at the federal level through an organized, systematic and collaborative approach to acquiring commonly used goods and services. The DOE strategic sourcing program builds upon historical accomplishments as well as establishes a more cohesive and disciplined program, consistent with OMB's direction, for the conduct of DOE future strategic sourcing efforts. The DOE and NNSA Senior Procurement Executives have created a strategic sourcing capability and organizational components to identify federal strategic sourcing opportunities and coordinate strategic thinking. To date, this program has identified a number of opportunities; particularly in the areas of

437

Energy Sources | Department of Energy  

Energy Savers [EERE]

Sources Energy Sources Renewable Energy Renewable Energy Learn more about energy from solar, wind, water, geothermal and biomass. Read more Nuclear Nuclear Learn more about how we...

438

The Orsay Polarized Electron Source  

Science Journals Connector (OSTI)

A polarized electron source is developed at Orsay to equip existing ... have chosen to adapt the flowing helium afterglow source working at Rice University: it is able...

S. Essabaa; C. G. Aminoff; J. Arianer; I. Brissaud

1991-01-01T23:59:59.000Z

439

DOE-HDBK-1122-99; Radiological Control Technician Training  

Broader source: Energy.gov (indexed) [DOE]

Radioactive Source Control Radioactive Source Control Study Guide 2.08-1 Course Title: Radiological Control Technician Module Title: Radioactive Source Control Module Number: 2.08 Objectives: 2.08.01 Describe the requirements for radioactive sources per 10 CFR 835. i 2.08.02 Identify the characteristics of radioactive sources that must be controlled at your site. i 2.08.03 Identify the packaging, marking, and labeling requirements for radioactive sources. i 2.08.04 Describe the approval and posting requirements for radioactive materials areas. i 2.08.05 Describe the process and procedures used at your site for storage and accountability of radioactive sources. INTRODUCTION A radioactive source is material used for its emitted radiation. Sources are constructed as sealed or unsealed and are classified as accountable or exempt.

440

Sealed Radioactive Source Accountability  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Notice extends DOE N 5400.9, Sealed Radioactive Source Accountability, of 12-24-91, until 12-24-95, unless sooner superseded or rescinded. The contents of DOE N 5400.9 will be updated and incorporated in the revised DOE O 5480.11, Radiation Protection for Occupational Workers.

1994-12-22T23:59:59.000Z

Note: This page contains sample records for the topic "activity controlled source" 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

New Sources of Energy  

Science Journals Connector (OSTI)

... and new ideas on recent progress in the applications of solar energy, wind power and geothermal energy, and held in Rome during August 21-31. The term 'new is ... power resources. These three forms of energy are very different in their characteristics; a geothermal energy source is a gift for any nation fortunate enough to possess such a site ...

H. HEYWOOD

1961-11-04T23:59:59.000Z

442

SOURCE SELECTION INFORMATION -  

Broader source: Energy.gov (indexed) [DOE]

P.L. 113-6 or P.L. 112-74 Section 301(b) to include P.L. 113-76 Section 301(c). This information is source selection information related to the conduct of a Federal agency...

443

Sealed Radioactive Source Accountability  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish Department of Energy (DOE) interim policy and to provide guidance for sealed radioactive source accountability. The directive does not cancel any directives. Extended by DOE N 5400.10 to 12-24-93 & Extended by DOE N 5400.12 to 12-24-94.

1991-12-24T23:59:59.000Z

444

Superluminal sources in astronomy  

Science Journals Connector (OSTI)

......February-March 1997 news News Superluminal sources...manifestations of natural violence in recorded...RAS Librarian. NEWS It is now 30 years...magnetic pres- sure drives a rapid outflow...resulting outflow of gas drags with it small......

Peter Wilkinson; Ralph Spencer

1997-01-01T23:59:59.000Z

445

Solid-State Halogen Atom Source for Chemical Dynamics and Etching...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Br and Br* in controllable quantities and velocities, thus providing an attractive UHV compatible solid-state radical atom source. The solid-state atom source is in principle...

446

Environment/Health/Safety (EHS): Operating Permits for LBNL Activities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Operating Permits for LBNL Activities Operating Permits for LBNL Activities LBNL Main Site Agency Expiration Date Certified Unified Program Agency Permit and Registration Hazardous Materials Release Response Plan (Hazardous Materials Business Plan) Aboveground Petroleum Storage Tanks, Spill Prevention Control and Countermeasures Plan Underground Storage Tank Program Hazardous Waste Generator Program Tiered Permit Program for Onsite Treatment of Hazardous Wastes City of Berkeley March 1, 2014 Fuel Dispensing Sources at Building 76: E85 Unleaded Bay Area Air Quality Management District July 1, 2014 Stationary Air Emission Sources (28 permits): Diesel-powered Emergency Standby Generators: Buildings 2, 31, 37(2), 48, 50A, 50B, 55, 62, 64(2), 66, 67, 68, 70, 70A, 72, 74, 77, 84B, 85 and three (3) portable units

447

Detecting insider activity using enhanced directory virtualization.  

SciTech Connect (OSTI)

Insider threats often target authentication and access control systems, which are frequently based on directory services. Detecting these threats is challenging, because malicious users with the technical ability to modify these structures often have sufficient knowledge and expertise to conceal unauthorized activity. The use of directory virtualization to monitor various systems across an enterprise can be a valuable tool for detecting insider activity. The addition of a policy engine to directory virtualization services enhances monitoring capabilities by allowing greater flexibility in analyzing changes for malicious intent. The resulting architecture is a system-based approach, where the relationships and dependencies between data sources and directory services are used to detect an insider threat, rather than simply relying on point solutions. This paper presents such an architecture in detail, including a description of implementation results.

Shin, Dongwan (New Mexico Tech, Socorro, NM); Claycomb, William R.

2010-07-01T23:59:59.000Z

448

Sources of Atmospheric Moisture for the La Plata River Basin  

Science Journals Connector (OSTI)

The La Plata River basin (LPRB) is the second largest basin of South America and extends over a highly populated and socioeconomically active region. In this study, the spatiotemporal variability of sources of moisture for the LPRB are quantified ...

J. Alejandro Martinez; Francina Dominguez

2014-09-01T23:59:59.000Z

449

Can Collaboration Engineering help Open Source communities to structure their  

E-Print Network [OSTI]

Can Collaboration Engineering help Open Source communities to structure their activities? Matthieu Collaborative work became an important stake for productivity, performance and innovation for companies. They bet more and more on communities of practice to support collaboration, sharing and creation

Paris-Sud XI, Université de

450

Electronic equilibrium as a function of depth in tissue from Cobalt-60 point source exposures  

E-Print Network [OSTI]

the X- Y plane. The scanning system consists of a light source, focusing system, photosensing detector, and precision computer controlled linear translation tables. A light emitting diode (LED) is the light source for the system. The proportion... the X- Y plane. The scanning system consists of a light source, focusing system, photosensing detector, and precision computer controlled linear translation tables. A light emitting diode (LED) is the light source for the system. The proportion...

Myrick, Jo Ann

2012-06-07T23:59:59.000Z

451

Formation of an internal transport barrier and magnetohydrodynamic activity in experiments with the controlled density of rational magnetic surfaces in the T-10 Tokamak  

SciTech Connect (OSTI)

Results are presented from experiments on the formation of an internal electron transport barrier near the q = 1.5 rational surface in the T-10 tokamak. The experiments were carried out in the regime with off-axis electron cyclotron resonance (ECR) heating followed by a fast plasma current ramp-up. After suppressing sawtooth oscillations by off-axis ECR heating, an internal transport barrier began to form near the q = 1.5 rational surface. In the phase of the current ramp-up, the quality of the transport barrier improved; as a result, the plasma energy confinement time increased 22.5 times. The intentionally produced flattening of the profile of the safety factor q(r) insignificantly affected magnetohydrodynamic activity in the plasma column in spite of the theoretical possibility of formation of substantial m/n = 3/2 and 2/1 magnetic islands. Conditions are discussed under which the flattening of the profile of the safety factor q near low-order rational surfaces leads to the formation of either an internal transport barrier or the development of an island magnetic structure induced by tearing modes.

Razumova, K. A., E-mail: razumova@nfi.kiae.ru; Andreev, V. F.; Belbas, I. S.; Gorshkov, A. V.; Dnestrovskij, A. Yu.; Dyabilin, K. S.; Kislov, A. Ya.; Lysenko, S. E.; Notkin, G. E.; Timchenko, N. N.; Chudnovskiy, A. N.; Shelukhin, D. A. [National Research Centre Kurchatov Institute (Russian Federation)] [National Research Centre Kurchatov Institute (Russian Federation)

2013-09-15T23:59:59.000Z

452

Stress and fault rock controls on fault zone hydrology, Coso geothermal  

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 » Stress and fault rock controls on fault zone hydrology, Coso geothermal field, CA Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Stress and fault rock controls on fault zone hydrology, Coso geothermal field, CA Details Activities (1) Areas (1) Regions (0) Abstract: In crystalline rock of the Coso Geothermal Field, CA, fractures are the primary source of permeability. At reservoir depths, borehole image, temperature, and mud logs indicate fluid flow is concentrated in extensively fractured damage zones of large faults well-oriented for slip.

453

Power Sources Inc | Open Energy Information  

Open Energy Info (EERE)

Sources Inc Sources Inc Jump to: navigation, search Name Power Sources Inc. Place Charlotte, North Carolina Sector Biomass Product US-based operator and developer of biomass-to-energy power plants. Coordinates 35.2225°, -80.837539° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.2225,"lon":-80.837539,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

454

X-ray source assembly having enhanced output stability, and fluid stream analysis applications thereof  

DOE Patents [OSTI]

An x-ray source assembly and method of operation are provided having enhanced output stability. The assembly includes an anode having a source spot upon which electrons impinge and a control system for controlling position of the anode source spot relative to an output structure. The control system can maintain the anode source spot location relative to the output structure notwithstanding a change in one or more operating conditions of the x-ray source assembly. One aspect of the disclosed invention is most amenable to the analysis of sulfur in petroleum-based fuels.

Radley, Ian (Glenmont, NY); Bievenue, Thomas J. (Delmar, NY); Burdett, John H. (Charlton, NY); Gallagher, Brian W. (Guilderland, NY); Shakshober, Stuart M. (Hudson, NY); Chen, Zewu (Schenectady, NY); Moore, Michael D. (Alplaus, NY)

2008-06-08T23:59:59.000Z

455

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

456

Overview | Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

APS Overview: APS Overview: Introduction APS Systems Map LINAC Booster Synchrotron Storage Ring Insertion Devices Experiment Hall LOMs & Beamlines Overview of the APS The Advanced Photon Source (APS) at the U.S. Department of Energy's Argonne National Laboratory provides this nation's (in fact, this hemisphere's) brightest storage ring-generated x-ray beams for research in almost all scientific disciplines. Photo: Aerial Photo of APS Aerial photo of the Advanced Photon Source These x-rays allow scientists to pursue new knowledge about the structure and function of materials in the center of the Earth and in outer space, and all points in between. The knowledge gained from this research can impact the evolution of combustion engines and microcircuits, aid in the development of new pharmaceuticals, and pioneer nanotechnologies whose

457

National Synchrotron Light Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Report 2001 Report 2001 National Synchrotron Light Source For the period October 1, 2000 through September 30, 2001 Introduction Science Highlights Year in Review Operations Publications Abstracts Nancye Wright & Lydia Rogers The National Synchrotron Light Source Department is supported by the Office of Basic Energy Sciences United States Department of Energy Washington, D.C. Brookhaven National Laboratory Brookhaven Science Associates, Inc. Upton, New York 11973 Under Contract No. DE-AC02-98CH10886 Mary Anne Corwin Steven N. Ehrlich & Lisa M. Miller Managing Editor Science Editors Production Assistants Cover images (clockwise from top left) 1. from Science Highlight by K.R. Rajashankar, M.R. Chance, S.K. Burley, J. Jiang, S.C. Almo, A. Bresnick, T. Dodatko, R. Huang, G. He,

458

Posters | Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Your Cart (0 Posters) Your Cart (0 Posters) Your cart is empty. checkout Subtotal: $0.00 update empty Posters Order a printed APS poster! 11 in. x 17 in. prints will be mailed in the order requests are received. 36 in. x 36 in. posters will be sent to school addresses once all orders are processed. The Advanced Photon Source Is The Advanced Photon Source Is Qty: 1 add to cart Technologies from Materials Science Technologies from Materials Science Qty: 1 add to cart Materials Under Extreme Pressure Materials Under Extreme Pressure Qty: 1 add to cart Biological Macromolecules in Action Biological Macromolecules in Action Qty: 1 add to cart Journey to the Center of the Earth Journey to the Center of the Earth Qty: 1 add to cart Earthshaking Monitor Earthshaking Monitor Qty: 1 add to cart Imaging with X-rays

459

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

460

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

Note: This page contains sample records for the topic "activity controlled source" 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.


461

Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Home Home Group Members Accelerator Magnets Insertion Devices Facilities Presentations & Publications Internal Magnetic Devices Group The primary mission of the Magnetic Devices (MD) Group is to design, build, and maintain Insertion Devices (IDs) that are reliable and transparent to the electron beam at the Advanced Photon Source (APS). The majority of IDs at the APS are conventional planar hybrid undulators, but an essential part of the mission is to develop novel IDs, such as short-period superconducting undulators and long-period electromagnetic undulators. The capabilities of APS IDs are matched to users' experimental needs. The mission also includes magnetic tuning of the IDs to ensure their near-ideal performance as x-ray sources and calculations to predict the radiation

462

Photon Source Parameters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Photon Source Parameters Print Photon Source Parameters Print Summary Graph of Brightness Curves for All Insertion Devices Insertion Device and Bend Magnet Parameters Bend Magnet Superbend Magnet U30 Undulator U50 Undulator U80 Undulator U100 Undulator W114 Wiggler The ALS has six elliptically polarizing undulators, two in straight 4, two in straight 11, and one each in straights 6 and 7. All are arranged with chicanes so that two such devices can be installed to feed two independent beamlines. They can be used in a variety of polarization modes, including circular, elliptical, horizontal, and vertical. These modes can be chosen by appropriate phasing of the magnet rows. The brightness and flux curves below are shown for horizontal and circular polarization. Curves for elliptical and vertical polarization are similar to the horizontal polarization curve, but the minimum photon energy is higher.

463

Evaluated teletherapy source library  

DOE Patents [OSTI]

The Evaluated Teletherapy Source Library (ETSL) is a system of hardware and software that provides for maintenance of a library of useful phase space descriptions (PSDs) of teletherapy sources used in radiation therapy for cancer treatment. The PSDs are designed to be used by PEREGRINE, the all-particle Monte Carlo dose calculation system. ETSL also stores other relevant information such as monitor unit factors (MUFs) for use with the PSDs, results of PEREGRINE calculations using the PSDs, clinical calibration measurements, and geometry descriptions sufficient for calculational purposes. Not all of this information is directly needed by PEREGRINE. It also is capable of acting as a repository for the Monte Carlo simulation history files from which the generic PSDs are derived.

Cox, Lawrence J. (Los Alamos, NM); Schach Von Wittenau, Alexis E. (Livermore, CA)

2000-01-01T23:59:59.000Z

464

Advanced Photon Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

0 Advanced Photon Source 0 Advanced Photon Source A U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences national synchrotron x-ray research facility Search Button About Welcome Overview Visiting the APS Mission & Goals Find People Organization Charts Committees Job Openings User Information Prospective Users New Users Current Users APS User Portal Macromolecular Crystallographers Administrators Find a Beamline Apply for Beam Time Contacts Calendars Community Scientific Access Site Access Training Science & Education Science & Research Highlights Conferences Seminars Publications Annual Reports APS Upgrade Courses and Schools Graduate Programs Scientific Software Media Center Calendar of Events APS News User News Argonne/APS Press Releases Argonne/APS Feature Stories Argonne/APS In The News

465

Comparisons with Other sources  

U.S. Energy Information Administration (EIA) Indexed Site

Estimates Compared with Other sources Estimates Compared with Other sources The following seven graphs were prepared to give a sense of the variation and confidence level of the EIA-914 estimates. Each graph shows the reported sample production (the starting point for making an estimate), the EIA-914 estimates, State reported data, HPDI reported data, and Lippman Consulting data for comparison. State data are obtained directly from the States usually via a State agency web site as a monthly total. HPDI is a commercial data vender. They acquire data from all the States and provide it to EIA in a single format and query system at the well or lease level. EIA then sums this data to the operator level and State level. HPDI data typically lag the State data by 1 or 2 months.

466

Dense Plasma Focus Fusion Neutron Sources Progress at NSTec, September 2011  

SciTech Connect (OSTI)

A number of dense plasma focus (DPF) sources are introduced, including their operating characteristics and current activities. Neutron resonance spectroscopy is discussed and the feasibility of using DPF for neutron sources is considered.

Hagen, E. C.

2011-07-02T23:59:59.000Z

467

Intermediate Energy Infobook and Intermediate Infobook Activities (29 Activities)  

K-12 Energy Lesson Plans and Activities Web site (EERE)

The Teacher Infobook provides fact sheets about energy, the major energy sources, electricity, energy consumption, and energy efficiency and conservation. The background section includes an introduction to energy and details about individual energy sources. There are also sections on global climate change and several detailed fact sheets on electricity and energy consumption and efficiency. The companion student activities book reinforces the general information and facts about the energy sources.

468

Negative ion source  

DOE Patents [OSTI]

A method and apparatus for providing a negative ion source accelerates electrons away from a hot filament electron emitter into a region of crossed electric and magnetic fields arranged in a magnetron configuration. During a portion of the resulting cycloidal path, the electron velocity is reduced below its initial value. The electron accelerates as it leaves the surface at a rate of only slightly less than if there were no magnetic field, thereby preventing a charge buildup at the surface of the emitter. As the electron traverses the cycloid, it is decelerated during the second, third, and fourth quadrants, then reeccelerated as it approaches the end of the fourth quadrant to regain its original velocity. The minimum velocity occurs during the fourth quadrant, and corresponds to an electron temperature of 200.degree. to 500.degree. for the electric and magnetic fields commonly encountered in the ion sources of magnetic sector mass spectrometers. An ion source using the above-described thermalized electrons is also disclosed.

Delmore, James E. (Idaho Falls, ID)

1987-01-01T23:59:59.000Z

469

Sources and Gravitons  

Science Journals Connector (OSTI)

Gravitational theory is reconstructed from the source description of gravitons. As indirect evidence for this starting point, the theoretical basis for the four tests of Einsteinian gravitational theory is produced by elementary arguments. Following the electromagnetic example, the source description is recast as a numerical field theory characterized by an action principle. After recognizing that the physically restricted theory possesses invariance with respect to infinitesimal coordinate transformations, it is generalized to exhibit invariance under arbitrary coordinate transformations, which supplies the primitive interactions for multigraviton processes. There is a discussion of the necessary dependence of graviton sources upon the gravitational field, and a simple model is constructed. The qualitative structure of the modification that multiparticle exchange introduces in the graviton-propagation function is exhibited, with the corresponding modification in the Newtonian potential. There are some speculative remarks about Mach's principle and the accompanying interpretation of the gravitational constant. The paper concludes by pointing out empirical scaling laws that interconnect the cosmos, the laboratory, and the atom.

Julian Schwinger

1968-09-25T23:59:59.000Z

470

Pulsed source ion implantation apparatus and method  

DOE Patents [OSTI]

A new pulsed plasma-immersion ion-implantation apparatus that implants ions in large irregularly shaped objects to controllable depth without overheating the target, minimizing voltage breakdown, and using a constant electrical bias applied to the target. Instead of pulsing the voltage applied to the target, the plasma source, for example a tungsten filament or a RF antenna, is pulsed. Both electrically conducting and insulating targets can be implanted.

Leung, Ka-Ngo (Hercules, CA)

1996-01-01T23:59:59.000Z

471

Pulsed source ion implantation apparatus and method  

DOE Patents [OSTI]

A new pulsed plasma-immersion ion-implantation apparatus that implants ions in large irregularly shaped objects to controllable depth without overheating the target, minimizing voltage breakdown, and using a constant electrical bias applied to the target. Instead of pulsing the voltage applied to the target, the plasma source, for example a tungsten filament or a RF antenna, is pulsed. Both electrically conducting and insulating targets can be implanted. 16 figs.

Leung, K.N.

1996-09-24T23:59:59.000Z

472

Rate allocation in a remote control structure  

E-Print Network [OSTI]

measuzes. The quantized control problem, in general, has vector sources with weighted distortion measures. The rate allocation scheme of Goodman, must therefore be modified to allow for vector sources. Chapter 3 will specifically address the problem... of rate allocation given vector sources and weighted distortion measures' Equations will be derived for the case when the measurements and controls are assumed independent and when they are dependent. k + k P k (a) k/k-1 (b) Fig. 2. DPCM (a...

Meadow, Charles Joe

1984-01-01T23:59:59.000Z

473

5 CCR 1001-5 Colorado Stationary Source Permitting and Air Pollution...  

Open Energy Info (EERE)

Colorado Stationary Source Permitting and Air Pollution Control Emission Notice Requirements Jump to: navigation, search OpenEI Reference LibraryAdd to library Reference: 5 CCR...

474

Table Definitions, Sources, and Explanatory Notes  

Gasoline and Diesel Fuel Update (EIA)

Natural Gas > Natural Gas Information Query System > Definitions, Sources, & Notes Natural Gas > Natural Gas Information Query System > Definitions, Sources, & Notes Definitions, Sources, and Explanatory Notes The EIA-176 form contains responses submitted from an identified universe of pipelines, local distribution companies, and operators of fields, wells or gas processing plants, who distribute gas to end users or transport gas across State borders; or underground natural gas storage operators. Definitions Key Terms Definition Commercial Consumption Gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services. Included are such establishments as hotels, restaurants, wholesale and retail stores and other service enterprises; gas used by local, State, and Federal agencies engaged in nonmanufacturing activities.

475

Pulsed pyroelectric crystal-powered gamma source  

SciTech Connect (OSTI)

A compact pulsed gamma generator is being developed to replace radiological sources used in commercial, industrial and medical applications. Mono-energetic gammas are produced in the 0.4 - 1.0 MeV energy range using nuclear reactions such as {sup 9}Be(d,n{gamma}){sup 10}B. The gamma generator employs an RF-driven inductively coupled plasma ion source to produce deuterium ion current densities up to 2 mA/mm{sup 2} and ampere-level current pulses can be attained by utilizing an array extraction grid. The extracted deuterium ions are accelerated to approximately 300 keV via a compact stacked pyroelectric crystal system and then bombard the beryllium target to generate gammas. The resulting microsecond pulse of gammas is equivalent to a radiological source with curie-level activity.

Chen, A. X.; Antolak, A. J.; Leung, K.-N.; Raber, T. N.; Morse, D. H. [Sandia National Laboratories, Livermore, CA 94550 (United States)

2013-04-19T23:59:59.000Z

476

Alternate energy source usage for in situ heat treatment processes  

DOE Patents [OSTI]

Systems, methods, and heaters for treating a subsurface formation are described herein. At least one system for providing power to one or more subsurface heaters is described herein. The system may include an intermittent power source; a transformer coupled to the intermittent power source, and a tap controller coupled to the transformer. The transformer may be configured to transform power from the intermittent power source to power with appropriate operating parameters for the heaters. The tap controller may be configured to monitor and control the transformer so that a constant voltage is provided to the heaters from the transformer regardless of the load of the heaters and the power output provided by the intermittent power source.

Stone, Jr., Francis Marion (Cut-N-Shoot, TX); Goodwin, Charles R. (League City, TX); Richard, Jr., James (Kingwood, TX)

2011-03-22T23:59:59.000Z

477

Role of acoustical technology in the development of new energy sources  

Science Journals Connector (OSTI)

During the past five years considerable progress has been made in the control and abatement of excessive and/or harmful noise as well as vibration associated with the transportation construction and industrial activities and systems. This has been a definite contribution of acoustics towards improving the quality of our environment and community life alike. A similar kind of concerted effort is required whereby the know1edge of acoustics can be advantageously utilized in the development of much?needed new energy sources. Among the more challenging acoustical technologies available during exploration detection and identification of new conventional and non?conventional energy sources are those utilizing ultrasonic electroacoustics underwater acoustics and geoacoustics principles and/or disciplines. For example echo?sounding has been effectively used in the detection and assessment of marine resources. In the same way acousti?coring and seismic reflection techniques have been successfully employed during the exploration and detection phases associated with mining geology and marine sediments. However the most attractive area of new energy source development where acoustical technology can best be utilized appears to be in the exploration of active "geothermal" sites. The ground noise(seismic)measurements utilizing sensitive and precision acoustical instrumentation can tremendously accelerate development of this important untapped and nonpolluting form of natural energy. This paper reviews the interaction of acoustics with new energy resource development programs.

A. G. Jhaveri

1975-01-01T23:59:59.000Z

478

AVESTAR® - Control  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Control Control AVESTAR control system efforts are focused on development of computational approaches for simulation and advanced controls for energy systems. Power generation technologies are growing more sophisticated and require control strategies and systems to be updated to allow plant owners to take full advantage of their increased capabilities. A well designed control system can provide the ability to hit and maintain setpoints without oscillation for optimum power plant operation. Implementation of complex control systems developed through advanced computational approaches will increase efficiency and reduce emissions. The AVESTAR team is focusing on the following three areas of process control research: 1) Plant-wide control system design, 2) Advanced regulatory control, and 3) Advanced process control. Process control models, methods, and tools are developed and applied to a wide variety of energy systems ranging from smart plant to smart grid.

479

Future directions in impulsive sound sources  

Science Journals Connector (OSTI)

While impulsive acoustic sources have long been used by the geophysical community for underwater exploration sonar applications have been relatively uncommon. Recent work in the area of electric discharge devices has led to both a better understanding of the physics of this class of impulsive soundgenerator and to new devices which may in turn lead to an expanded role for such technology in sonar applicationsin particular the observation that the electric arc commonly associated with sparker sound sources represents a wasteful and unnecessary complication. Proper electrode design and control of the electric discharge can eliminate the arc leaving only a steam bubble and can thereby enhance the low?frequency performance of such a device. Insight into the performance and potential of such devices is in part a result of improved computer modeling capabilities of the nonlinear processes associated with impulsive devices as well as on the use of high?speed data acquisition in interpreting experimental results. This is especially true for determining the effects of interactions in arrays of bubble sources. Beyond the electric discharge sources understanding of the coupling of energy from the bubble to the sound field suggests improvements for chemically driven sound sources as well. An update of work on these impulsive devices and the modeling efforts that support them is presented. The performance of some recently developed devices and the potential for future development will be discussed.

Edward F. Rynne

1993-01-01T23:59:59.000Z

480

Electric Power From Ambient Energy Sources  

SciTech Connect (OSTI)

This report summarizes research on opportunities to produce electric power from ambient sources as an alternative to using portable battery packs or hydrocarbon-fueled systems in remote areas. The work was an activity in the Advanced Concepts Project conducted by Pacific Northwest National Laboratory (PNNL) for the Office of Research and Development in the U.S. Department of Energy Office of Nonproliferation and National Security.

DeSteese, John G.; Hammerstrom, Donald J.; Schienbein, Lawrence A.

2000-10-03T23:59:59.000Z

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481

CHSP: HAZARD CONTROLS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

HYGIENE HYGIENE AND SAFETY PLAN CHSP SITE MAP HAZARD CONTROLS CONTROLS FOR HAZARDOUS MATERIALS arrow image WORK PRACTICE CONTROLS arrow image CHEMICAL STORAGE GUIDELINES DECOMISSIONING LAB AND SHOP SPACES SPECIFIC CONTROLS AND PROCEDURES arrow image EMERGENCY PROCEDURES AND EQUIPMENT arrow image APPENDICES arrow image FAQs QUESTIONS Search the CHSP: > Go spacer image EH&S Home PUB 3000 LBNL Home LBNL A-Z Index LBNL Search LBNL Phone Book Privacy & Security Notice spacer spacer image spacer image spacer image HAZARD CONTROLS This section discusses control procedures for limiting employee exposure to chemical hazards. Technical Areas Technical areas include laboratories, shops, workrooms, and similar areas where non-administrative activities are performed. For the purpose of the

482

The European Spallation Source  

SciTech Connect (OSTI)

In 2003 the joint European effort to design a European Spallation Source (ESS) resulted in a set of reports, and in May 2009 Lund was agreed to be the ESS site. The ESS Scandinavia office has since then worked on setting all the necessary legal and organizational matters in place so that the Design Update and construction can be started in January 2011, in collaboration with European partners. The Design Update phase is expected to end in 2012, to be followed by a construction phase, with first neutrons expected in 2018-2019.

Lindroos M.; Calaga R.; Bousson S.; Danared H.; Devanz G. et al

2011-04-20T23:59:59.000Z

483

A surface ionization source  

E-Print Network [OSTI]

The Einzel Lens. 2 The Quadrupole Triplet . . 3. The Beam Scanner. . . 4 The Four-plate Detectors and Faraday Cups. III TESTING AND OPTIMIZING THE BEAM LINE 10 12 13 A. Initial Results. IV THE THEORY OF SURFACE IONIZATION . . . . . V ION SOURCES. 21... aperture and through a beam scanner. The scanner translates the beam's cross-section to an image visible on the oscilloscope A movable Faraday cup connected to a sensitive electrometer is used to maximize the beam transmission at the opening into the 2...

Buzatu, Daniel J.

2012-06-07T23:59:59.000Z