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1

Dave Kaminsky Charles L. Black  

E-Print Network (OSTI)

1935 $50.00 Dave Kaminsky 1938 $200.00 Charles L. Black 1940 $50.00 Harold S. Miropol 1941 $67,770.00 Phillip B. Bandel Robert C. Batson Charles L. Black Russell Blaylock Barry Boston Lawrence J. Danna James $5,650.00 Robert A. Alexander Bradley C. Black James C. Boothe Joseph C. Bremer Theodore W. Burns

2

DAVE, Data Analysis and Visualization Environment  

Science Conference Proceedings (OSTI)

... cross sections table for all elements and isotopes; ... would appreciate acknowledgment if the software is used ... into some of the DAVE programs as ...

3

Y-12s Training and Technology ? TAT and Dave Miller  

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

Training and Technology - TAT and Dave Miller Dave Miller was discharged from the Navy in 1970. He enrolled in Chattanooga State Technical College because it was the only school...

4

"Ask Argonne" - Dave Grabaskas, Nuclear Engineer, Part 1 | Argonne...  

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

"Ask Argonne" - Dave Grabaskas, Nuclear Engineer, Part 1 Share Browse By - Any - Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Diesel...

5

Dr. Dave Moody to Lead the Carlsbad Field Office  

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

U.S. Department of Energy (DOE) announced today that long-time Los Alamos National Laboratory (LANL) scientist Dr. Dave Moody will be the new manager of the Carlsbad Field Office...

6

10 Questions for a Particle Physicist: Dave Schmitz | Department of Energy  

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

Particle Physicist: Dave Schmitz Particle Physicist: Dave Schmitz 10 Questions for a Particle Physicist: Dave Schmitz April 7, 2011 - 5:46pm Addthis Dave Schmitz | Photo Courtesy of Fermilab Dave Schmitz | Photo Courtesy of Fermilab Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs "Neutrinos have developed a reputation for themselves by repeatedly surprising the science community. The first surprising thing was their simple existence." Dave Schmitz Particle physicist Dave Schmitz works on the MINERvA experiment at Fermi National Accelerator Lab -- he took some time to tell us why neutrinos (electrically neutral, subatomic particles) are important to the universe and why the time 1:32am has special meaning for his experiment. And, check out Dr. Schmitz's talk yesterday -- "In One Ear and Out the Other: A

7

Dr. Dave Moody to Lead the Carlsbad Field Office  

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

DOENews DOENews Media Contacts: Dennis Hurtt U.S. DOE Carlsbad Field Office (505) 234-7327 www.wipp.energy.gov For Immediate Release WIPP Reaches 4-Million-Hour Safety Milestone CARLSBAD, N.M., November 15, 2006 - Employees at the Waste Isolation Pilot Plant (WIPP) have worked more than 4 million hours without missing a single day of work due to an on-the-job injury or illness. Although 2- and 3-million-hour milestones have been reached on several occasions, this is the first time WIPP personnel have surpassed the 4-million-hour mark. "Employees at WIPP are among the safest in the world," says Dr. Dave Moody, manager of the U.S. Department of Energy's Carlsbad Field Office (CBFO). "I'm proud of everyone's efforts and know that we will continue to strive for a zero-injury workplace."

8

Dr. Dave Moody to Lead the Carlsbad Field Office  

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

(505) 234-7204 (505) 234-7204 www.susan.scott@wipp.ws U.S. Department of Energy Carlsbad Field Office Waste Isolation Pilot Plant P.O. Box 3090 Carlsbad, New Mexico 88221 DOENews For Immediate Release WIPP receives 5,000th shipment CARLSBAD, N.M., September 11, 2006 - The U.S. Department of Energy's Waste Isolation Pilot Plant (WIPP) has reached a major milestone toward cleanup of the nation's defense-related transuranic waste. The WIPP received its 5,000 th waste shipment September 10. "This has been a real team effort. Everyone involved in the cleanup, transportation and final disposal of this waste is to be congratulated for making safety the priority. Each phase performs a service to this nation, and I'm proud to be part of it," said Dr. Dave

9

Device performance of in situ steam generated gate dielectric nitrided by remote plasma nitridation  

Science Conference Proceedings (OSTI)

In situ steam generated (ISSG) oxides have recently attracted interest for use as gate dielectrics because of their demonstrated reliability improvement over oxides formed by dry oxidation. [G. Minor, G. Xing, H. S. Joo, E. Sanchez, Y. Yokota, C. Chen, D. Lopes, and A. Balakrishna, Electrochem. Soc. Symp. Proc. 99-10, 3 (1999); T. Y. Luo, H. N. Al-Shareef, G. A. Brown, M. Laughery, V. Watt, A. Karamcheti, M. D. Jackson, and H. R. Huff, Proc. SPIE 4181, 220 (2000).] We show in this letter that nitridation of ISSG oxide using a remote plasma decreases the gate leakage current of ISSG oxide by an order of magnitude without significantly degrading transistor performance. In particular, it is shown that the peak normalized transconductance of n-channel devices with an ISSG oxide gate dielectric decreases by only 4% and the normalized drive current by only 3% after remote plasma nitridation (RPN). In addition, it is shown that the reliability of the ISSG oxide exhibits only a small degradation after RPN. These observations suggest that the ISSG/RPN process holds promise for gate dielectric applications. {copyright} 2001 American Institute of Physics.

Al-Shareef, H. N.; Karamcheti, A.; Luo, T. Y.; Bersuker, G.; Brown, G. A.; Murto, R. W.; Jackson, M. D.; Huff, H. R.; Kraus, P.; Lopes, D. (and others)

2001-06-11T23:59:59.000Z

10

Measurement of Infrasound Emissions from Wind Turbines Dave Pepyne, Michael Zink and Jamyang Tenzin  

E-Print Network (OSTI)

Measurement of Infrasound Emissions from Wind Turbines Dave Pepyne, Michael Zink and Jamyang Tenzin energy has made wind turbine technology a suitable candidate for pollution-free energy. With its great that received many complaints from the residents living near the large wind turbine poles. Many scientists

Mountziaris, T. J.

11

Dave Sopchak  

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

at Case Western Reserve University under Barry Miller in 2000. He has worked on fuel cells for over 10 years, at Dais-Analytic, Lawrence Livermore National Lab, helped...

12

Dave Jollata  

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

sales and finance since joining the company in 1990. He is leading QualityLogic's Smart Grid activities including the Pacific Northwest Smart Grid Demonstration Project test...

13

Dave Jollata  

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

sales and finance since joining the company in 1990. He is leading QualityLogic's Smart Grid activities including the Pacific Northwest Smart Grid Demonstration Project...

14

Economical design of gate-commutated inverters for the grid-tied distributed generators  

Science Conference Proceedings (OSTI)

The cost-effectiveness of small distributed generating resources is vital to the success of the high penetration of distributed generators within the microgrid concept. A common mechanism is the use of highly efficient inverters following the electrical storage systems. In this paper

Mujahidul Islam; Adedamola Omole; Arif Islam; Alexander Domijan Jr.

2011-01-01T23:59:59.000Z

15

from Microsoft's Bill Gates. Summer  

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

Power surge (page 2) Developing fuel for next- generation nuclear reactors, with backing from Microsoft's Bill Gates. Summer fun (pages 4-5) All aboard a bus or train and tour Y-12...

16

Hydrogen From Bio-Derived LiquidsHydrogen From BioHydrogen From Bio--Derived LiquidsDerived Liquids Dave King, Yong Wang, PNNL  

E-Print Network (OSTI)

Dave King, Yong Wang, PNNL BILIWIG Meeting Laurel, Maryland November 6, 2007 #12;Innovation / Overview Brian James) #12;10/25/07: PNNL Complex with 8:1 Steam/Eth molar ratio and 75% PSA Recovery and 400C WGS

17

David Gates home page  

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

Gates home page http:www.pppl.gov%7EdgatesSiteDr.DavidA.Gates.html (1 of 4) 8302012 9:47:58 AM David Gates home page Dr. David A. Gates Princeton Plasma Physics...

18

Effect of Oxygen on Ni-Silicided FUSI Metal Gate  

E-Print Network (OSTI)

Continual evolution of the CMOS technology requires thinner gate dielectric to maintain high performance. However, when moving into the sub-65 nm CMOS generation, the traditional poly-Si gate approach cannot effectively ...

Yu, H.P.

19

FLOW GATING  

DOE Patents (OSTI)

BS>This invention is a fast gating system for eiectronic flipflop circuits. Diodes connect the output of one circuit to the input of another, and the voltage supply for the receiving flip-flop has two alternate levels. When the supply is at its upper level, no current can flow through the diodes, but when the supply is at its lower level, current can flow to set the receiving flip- flop to the same state as that of the circuit to which it is connected. (AEC)

Poppelbaum, W.J.

1962-12-01T23:59:59.000Z

20

East Gate  

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

East East Gate to: Rt. 59 Fermilab Village Main Entrance B u tt e r fi e ld R d . to: Farnsworth Ave, I-88 Kirk Rd. Site 56 Site 55 Buffalo Farm Lederman Science Center (Public Welcome) Prairie Trails Dog Training Area Nature Area Lake Law A.E. Sea Technical Division Illinois Accelerator Research Center Feynman Computing Center Muon Delivery Ring Main Injector Tevatron Test Accelerators Site 37 Site 39 Site 38 Neutrino Experiments Silicon Detector Facility Test Beam Facility DAB Site 50 Wilson Hall & Ramsey Auditorium (Public Welcome) Wilson St. Gate (Deliveries, Employees) NML CMTF A 1 R D D R D B RD S E O LA R D B A T A V I A R D E WILSON ST WILSON ST P IN E S T P O W E R L I N E R D N E O LA R D MCCHESNEY RD A B C D E 5 4 3 2 1 ´ 0 0.5 1 0.25 Miles Trails Public Areas Buildings Roads/Parking Ponds Fermi National Accelerator Laboratory 2013 Fermilab Site Map

Note: This page contains sample records for the topic "dave gates generating" 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

2010 PECASE - Dave Holbrook  

Science Conference Proceedings (OSTI)

... Applying NIST's advanced measurement techniques and analytical methodologies in combination with his wastewater treatment process ...

2012-10-19T23:59:59.000Z

22

The J-K Gate  

Science Conference Proceedings (OSTI)

For many years two-input NAND, AND, NOR, OR and EX-OR gates have been commercially available as cheap quad TTL integrated circuits (IC's). Ideas on quad programmable two-input gates (three inputs per gate) have been published in the literature but have ... Keywords: Digital circuit design, EX-OR gate, inverter, J-K gate, latch, logic circuit, NAND gate, NIMP gate, OR gate, programmable gate circuit, standard gate, zero/one-true/complement element.

R. M. M. Oberman

1976-11-01T23:59:59.000Z

23

Observations and Mechanisms of GATE Waterspouts  

Science Conference Proceedings (OSTI)

The GATE data base for days 261 and 186 is used for a combined observational and numerical investigation of interacting cumulus processes that may be important in the generation of waterspouts. The results suggest that the existence of cumulus-...

Joanne Simpson; Bruce R. Morton; Michael C. McCumber; Richard S. Penc

1986-04-01T23:59:59.000Z

24

Gated strip proportional detector  

DOE Patents (OSTI)

A gated strip proportional detector includes a gas tight chamber which encloses a solid ground plane, a wire anode plane, a wire gating plane, and a multiconductor cathode plane. The anode plane amplifies the amount of charge deposited in the chamber by a factor of up to 10/sup 6/. The gating plane allows only charge within a narrow strip to reach the cathode. The cathode plane collects the charge allowed to pass through the gating plane on a set of conductors perpendicular to the open-gated region. By scanning the open-gated region across the chamber and reading out the charge collected on the cathode conductors after a suitable integration time for each location of the gate, a two-dimensional image of the intensity of the ionizing radiation incident on the detector can be made.

Morris, C.L.; Idzorek, G.C.; Atencio, L.G.

1985-02-19T23:59:59.000Z

25

Gated strip proportional detector  

DOE Patents (OSTI)

A gated strip proportional detector includes a gas tight chamber which encloses a solid ground plane, a wire anode plane, a wire gating plane, and a multiconductor cathode plane. The anode plane amplifies the amount of charge deposited in the chamber by a factor of up to 10.sup.6. The gating plane allows only charge within a narrow strip to reach the cathode. The cathode plane collects the charge allowed to pass through the gating plane on a set of conductors perpendicular to the open-gated region. By scanning the open-gated region across the chamber and reading out the charge collected on the cathode conductors after a suitable integration time for each location of the gate, a two-dimensional image of the intensity of the ionizing radiation incident on the detector can be made.

Morris, Christopher L. (Los Alamos, NM); Idzorek, George C. (Los Alamos, NM); Atencio, Leroy G. (Espanola, NM)

1987-01-01T23:59:59.000Z

26

University of Wisconsin - Madison Space Science and Engineering Center Leslie Moy, Lori Borg, Bob Knuteson, Hank Revercomb, Joel Susskind, and Dave Tobin  

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

Wisconsin - Madison Wisconsin - Madison Space Science and Engineering Center Leslie Moy, Dave Tobin, Bob Knuteson, Lori Borg, Hank Revercomb (PI), Marty Mlynczak 1 , and Joel Susskind 2 1 NASA Langley, 2 NASA GSFC Assessing ARM Clear Sky BBHRP with CERES and AIRS The RRTM calculations of clear sky OLR agree with CERES observations to ~1 W/m 2 with an uncertainty of ~1 W/m 2 . * True at SGP over 2.5 years, true globally (with some understood regional exceptions) for study day. * True using ARM data as input to RRTM, true using AIRS sounding retrievals as input to RRTM. BBRHP summary report Goal: To assess and improve BBHRP. Approach: Use CERES fluxes & AIRS radiances and retrievals. * SSF CERES is currently a better metric for BBHRP assessment than GOES. * AIRS spectral radiance analysis allows us to evaluate the

27

Aerosol Retrievals from Individual AVHRR Channels. Part I: Retrieval Algorithm and Transition from Dave to 6S Radiative Transfer Model  

Science Conference Proceedings (OSTI)

The present second-generation aerosol retrieval algorithm over oceans used at NOAA/National Environmental Satellite, Data, and Information Service (NESDIS) separately retrieves two values of aerosol optical depth, ?1 and ?2, from Advanced Very ...

Alexander Ignatov; Larry Stowe

2002-02-01T23:59:59.000Z

28

Workfunction Tuning of n-Channel MOSFETs Using Interfacial Yttrium Layer in Fully Silicided Nickel Gate  

E-Print Network (OSTI)

Continual scaling of the CMOS technology requires thinner gate dielectric to maintain high performance. However, when moving into the sub-45 nm CMOS generation, the traditional poly-Si gate approach cannot effectively ...

Yu, Hongpeng

29

David A Gates | Princeton Plasma Physics Lab  

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

A Gates A Gates Principal Research Physicist, Stellerator Physics Lead, Advanced Projects Division, Science Focus Group Leader for Macroscopic Stability David Gates is a principal research physicist for the advanced projects division of PPPL, and the stellarator physics leader at the Laboratory. In the latter capacity he leads collaborative efforts with the Wendelstein 7-X and Large Helical Device stellarator projects in Germany and Japan, respectively. Gates is first author of more than a dozen research papers, including an April, 2012, paper that proposed a possible solution to a critical barrier to fusion as a source of energy for generating electricity. Interests Collisional energy transport High-frequency Alfvén waves Fast-ion energy transfer Ideal and resistive magneto-hydrodynamic stability

30

Optical NAND gate  

DOE Patents (OSTI)

An optical NAND gate is formed from two pair of optical waveguide devices on a substrate, with each pair of the optical waveguide devices consisting of an electroabsorption modulator and a photodetector. One pair of the optical waveguide devices is electrically connected in parallel to operate as an optical AND gate; and the other pair of the optical waveguide devices is connected in series to operate as an optical NOT gate (i.e. an optical inverter). The optical NAND gate utilizes two digital optical inputs and a continuous light input to provide a NAND function output. The optical NAND gate can be formed from III-V compound semiconductor layers which are epitaxially deposited on a III-V compound semiconductor substrate, and operates at a wavelength in the range of 0.8-2.0 .mu.m.

Skogen, Erik J. (Albuquerque, NM); Raring, James (Goleta, CA); Tauke-Pedretti, Anna (Albuquerque, NM)

2011-08-09T23:59:59.000Z

31

NREL: Computational Science - Dave Evenson  

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

technologies since 1998. He also has extensive experience in the areas of digital asset management, publishing, networking and telecommunications systems, and software...

32

Text Processing with GATE  

Science Conference Proceedings (OSTI)

GATE is a free open-source infrastructure for developing and deploying software components that process human language. It is more than 15 years old and is in active use for all types of computational tasks involving language (frequently called natural ...

Hamish Cunningham; Diana Maynard; Kalina Bontcheva

2011-04-01T23:59:59.000Z

33

Compact gate valve  

DOE Patents (OSTI)

This invention relates to a double-disc gate valve which is compact, comparatively simple to construct, and capable of maintaining high closing pressures on the valve discs with low frictional forces. The valve casing includes axially aligned ports. Mounted in the casing is a sealed chamber which is pivotable transversely of the axis of the ports. The chamber contains the levers for moving the valve discs axially, and an actuator for the levers. When an external drive means pivots the chamber to a position where the discs are between the ports and axially aligned therewith, the actuator for the levers is energized to move the discs into sealing engagement with the ports.

Bobo, Gerald E. (Knoxville, TN)

1977-01-01T23:59:59.000Z

34

Penn State DOE GATE Program  

DOE Green Energy (OSTI)

The Graduate Automotive Technology Education (GATE) Program at The Pennsylvania State University (Penn State) was established in October 1998 pursuant to an award from the U.S. Department of Energy (U.S. DOE). The focus area of the Penn State GATE Program is advanced energy storage systems for electric and hybrid vehicles.

Anstrom, Joel

2012-08-31T23:59:59.000Z

35

Entangling unitary gates on distant qubits with ancilla feedback  

E-Print Network (OSTI)

By using an ancilla qubit as a mediator, two distant qubits can undergo a non-local entangling unitary operation. This is desirable for when attempting to scale up or distribute quantum computation by combining fixed static local sets of qubits with ballistic mediators. Using a model driven by measurements on the ancilla, it is possible to generate a maximally entangling CZ gate while only having access to a less entangling gate between the pair qubits and the ancilla. However this results in a stochastic process of generating control phase rotation gates where the expected time for success does not correlate with the entangling power of the connection gate. We explore how one can use feedback into the preparation and measurement parameters of the ancilla to speed up the expected time to generate a CZ gate between a pair of separated qubits and to leverage stronger coupling strengths for faster times. Surprisingly, by choosing an appropriate strategy, control of a binary discrete parameter achieves comparable speed up to full continuous control of all degrees of freedom of the ancilla.

Kerem Halil Shah; Daniel K. L. Oi

2013-11-14T23:59:59.000Z

36

Range gated strip proximity sensor  

DOE Patents (OSTI)

A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance. 6 figs.

McEwan, T.E.

1996-12-03T23:59:59.000Z

37

Range gated strip proximity sensor  

DOE Patents (OSTI)

A range gated strip proximity sensor uses one set of sensor electronics and a distributed antenna or strip which extends along the perimeter to be sensed. A micro-power RF transmitter is coupled to the first end of the strip and transmits a sequence of RF pulses on the strip to produce a sensor field along the strip. A receiver is coupled to the second end of the strip, and generates a field reference signal in response to the sequence of pulse on the line combined with received electromagnetic energy from reflections in the field. The sensor signals comprise pulses of radio frequency signals having a duration of less than 10 nanoseconds, and a pulse repetition rate on the order of 1 to 10 MegaHertz or less. The duration of the radio frequency pulses is adjusted to control the range of the sensor. An RF detector feeds a filter capacitor in response to received pulses on the strip line to produce a field reference signal representing the average amplitude of the received pulses. When a received pulse is mixed with a received echo, the mixing causes a fluctuation in the amplitude of the field reference signal, providing a range-limited Doppler type signature of a field disturbance.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

38

Gate Solar | Open Energy Information  

Open Energy Info (EERE)

Sector Solar Product JV set up for the promotion, exploitation and sale of photovoltaic solar power plants. References Gate Solar1 LinkedIn Connections CrunchBase Profile No...

39

Determination of Mean Cumulus Cloud vorticity from GATE A/B-Scale Potential Vorticity Budget  

Science Conference Proceedings (OSTI)

The effects of cumulus clouds on the large-scale potential vorticity field are investigated using GATE data. Clouds are found to modify the mean potential vorticity field not only through vertical mixing but also through the generation of ...

Lawrence Cheng; Tsoi-Ching Yip; Han-Ru Cho

1980-04-01T23:59:59.000Z

40

Randomized Benchmarking of Quantum Gates  

E-Print Network (OSTI)

A key requirement for scalable quantum computing is that elementary quantum gates can be implemented with sufficiently low error. One method for determining the error behavior of a gate implementation is to perform process tomography. However, standard process tomography is limited by errors in state preparation, measurement and one-qubit gates. It suffers from inefficient scaling with number of qubits and does not detect adverse error-compounding when gates are composed in long sequences. An additional problem is due to the fact that desirable error probabilities for scalable quantum computing are of the order of 0.0001 or lower. Experimentally proving such low errors is challenging. We describe a randomized benchmarking method that yields estimates of the computationally relevant errors without relying on accurate state preparation and measurement. Since it involves long sequences of randomly chosen gates, it also verifies that error behavior is stable when used in long computations. We implemented randomized benchmarking on trapped atomic ion qubits, establishing a one-qubit error probability per randomized pi/2 pulse of 0.00482(17) in a particular experiment. We expect this error probability to be readily improved with straightforward technical modifications.

E. Knill; D. Leibfried; R. Reichle; J. Britton; R. B. Blakestad; J. D. Jost; C. Langer; R. Ozeri; S. Seidelin; D. J. Wineland

2007-07-06T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Mechanism of activation gating in the full-length KcsA K[superscript +] channel  

Science Conference Proceedings (OSTI)

Using a constitutively active channel mutant, we solved the structure of full-length KcsA in the open conformation at 3.9 {angstrom}. The structure reveals that the activation gate expands about 20 {angstrom}, exerting a strain on the bulge helices in the C-terminal domain and generating side windows large enough to accommodate hydrated K{sup +} ions. Functional and spectroscopic analysis of the gating transition provides direct insight into the allosteric coupling between the activation gate and the selectivity filter. We show that the movement of the inner gate helix is transmitted to the C-terminus as a straightforward expansion, leading to an upward movement and the insertion of the top third of the bulge helix into the membrane. We suggest that by limiting the extent to which the inner gate can open, the cytoplasmic domain also modulates the level of inactivation occurring at the selectivity filter.

Uysal, Serdar; Cuello, Luis G.; Cortes, D. Marien; Koide, Shohei; Kossiakoff, Anthony A.; Perozo, Eduardo (UC)

2012-10-25T23:59:59.000Z

42

Dynamic gating window for compensation of baseline shift in respiratory-gated radiation therapy  

Science Conference Proceedings (OSTI)

Purpose: To analyze and evaluate the necessity and use of dynamic gating techniques for compensation of baseline shift during respiratory-gated radiation therapy of lung tumors. Methods: Motion tracking data from 30 lung tumors over 592 treatment fractions were analyzed for baseline shift. The finite state model (FSM) was used to identify the end-of-exhale (EOE) breathing phase throughout each treatment fraction. Using duty cycle as an evaluation metric, several methods of end-of-exhale dynamic gating were compared: An a posteriori ideal gating window, a predictive trend-line-based gating window, and a predictive weighted point-based gating window. These methods were evaluated for each of several gating window types: Superior/inferior (SI) gating, anterior/posterior beam, lateral beam, and 3D gating. Results: In the absence of dynamic gating techniques, SI gating gave a 39.6% duty cycle. The ideal SI gating window yielded a 41.5% duty cycle. The weight-based method of dynamic SI gating yielded a duty cycle of 36.2%. The trend-line-based method yielded a duty cycle of 34.0%. Conclusions: Dynamic gating was not broadly beneficial due to a breakdown of the FSM's ability to identify the EOE phase. When the EOE phase was well defined, dynamic gating showed an improvement over static-window gating.

Pepin, Eric W.; Wu Huanmei; Shirato, Hiroki [School of Health Sciences, Purdue University, West Lafayette, Indiana 47907 (United States); Purdue School of Engineering Technology, IUPUI, Indianapolis, Indiana 46202 (United States); Hokkaido University School of Medicine, Sapporo, 060-8638 (Japan)

2011-04-15T23:59:59.000Z

43

Gate fidelity of arbitrary single-qubit gates constrained by conservation laws  

E-Print Network (OSTI)

Recent investigations show that conservation laws limit the accuracy of gate operations in quantum computing. The inevitable error under the angular momentum conservation law has been evaluated so far for the CNOT, Hadamard, and NOT gates for spin 1/2 qubits, while the SWAP gate has no constraint. Here, we extend the above results to general single-qubit gates. We obtain an upper bound of the gate fidelity of arbitrary single-qubit gates implemented under arbitrary conservation laws, determined by the geometry of the conservation law and the gate operation on the Bloch sphere as well as the size of the ancilla.

Tokishiro Karasawa; Julio Gea-Banacloche; Masanao Ozawa

2008-09-18T23:59:59.000Z

44

HRTEM image simulations for the study of ultra-thin gate oxides  

SciTech Connect

We have performed high resolution transmission electron microscope (HRTEM) image simulations to qualitatively assess the visibility of various structural defects in ultra-thin gate oxides of MOSFET devices, and to quantitatively examine the accuracy of HRTEM in performing gate oxide metrology. Structural models contained crystalline defects embedded in an amorphous 16 {angstrom}-thick gate oxide. Simulated images were calculated for structures viewed in cross-section. Defect visibility was assessed as a function of specimen thickness and defect morphology, composition, size and orientation. Defect morphologies included asperities lying on the substrate surface, as well as ''bridging'' defects connecting the substrate to the gate electrode. Measurements of gate oxide thickness extracted from simulated images were compared to actual dimensions in the model structure to assess TEM accuracy for metrology. The effects of specimen tilt, specimen thickness, objective lens defocus and coefficient of spherical aberration (C{sub s}) on measurement accuracy were explored for nominal 10{angstrom} gate oxide thickness. Results from this work suggest that accurate metrology of ultra-thin gate oxides (i.e. limited to several per cent error) is feasible on a consistent basis only by using a C{sub s}-corrected microscope. However, fundamental limitations remain for characterizing defects in gate oxides using HRTEM, even with the new generation of C{sub s}-corrected microscopes.

Taylor, Seth T.; Mardinly, John; O'Keefe, Michael A.

2001-07-17T23:59:59.000Z

45

The Gated X-ray Detector for the National Ignition Facility  

Science Conference Proceedings (OSTI)

Two new gated x-ray imaging cameras have recently been designed, constructed and delivered to the National Ignition Facility in Livermore, CA. These Gated X-ray Detectors are each designed to fit within an aluminum airbox with a large capacity cooling plane and are fitted with an array of environmental housekeeping sensors. These instruments are significant different from earlier generations of gated x-ray images due in parts to an innovative impendence matching scheme, advanced phosphor screens, pulsed phosphor circuits, precision assembly fixturing, unique system monitoring and complete remote computer control. Preliminary characterization has shown repeatable uniformity between imaging strips, improved spatial resolution and no detectable impendence reflections.

Oertel, J A; Barnes, C; Archuleta, T; Casper, L; Fatherley, V; Heinrichs, T; King, R; Landers, D; Lopez, F; Sanchez, P; Sandoval, G; Schrank, L; Walsh, P; Bell, P; Brown, M; Costa, R; Holder, J; Montalongo, S; Pederson, N

2006-05-18T23:59:59.000Z

46

Graduate Automotive Technology Education (GATE) Initiative Awards |  

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

Graduate Automotive Technology Education (GATE) Initiative Awards Graduate Automotive Technology Education (GATE) Initiative Awards Graduate Automotive Technology Education (GATE) Initiative Awards September 8, 2011 - 11:46am Addthis Graduate Automotive Technology Education (GATE) Initiative Awards DOE's Graduate Automotive Technology Education (GATE) initiative will award $6.4 million over the course of five years to support seven Centers of Excellence at American colleges, universities, and university-affiliated research institutions. The awardees will focus on three critical automotive technology areas: hybrid propulsion, energy storage, and lightweight materials. By funding curriculum development and expansion as well as laboratory work, GATE allows higher education institutions to develop multidisciplinary training. As a result, GATE promotes the development of a

47

Graduate Automotive Technology Education (GATE) Initiative Awards |  

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

Graduate Automotive Technology Education (GATE) Initiative Awards Graduate Automotive Technology Education (GATE) Initiative Awards Graduate Automotive Technology Education (GATE) Initiative Awards September 8, 2011 - 11:46am Addthis Graduate Automotive Technology Education (GATE) Initiative Awards DOE's Graduate Automotive Technology Education (GATE) initiative will award $6.4 million over the course of five years to support seven Centers of Excellence at American colleges, universities, and university-affiliated research institutions. The awardees will focus on three critical automotive technology areas: hybrid propulsion, energy storage, and lightweight materials. By funding curriculum development and expansion as well as laboratory work, GATE allows higher education institutions to develop multidisciplinary training. As a result, GATE promotes the development of a

48

Synthesis of Reversible Functions Beyond Gate Count and Quantum Cost  

E-Print Network (OSTI)

Many synthesis approaches for reversible and quantum logic have been proposed so far. However, most of them generate circuits with respect to simple metrics, i.e. gate count or quantum cost. On the other hand, to physically realize reversible and quantum hardware, additional constraints exist. In this paper, we describe cost metrics beyond gate count and quantum cost that should be considered while synthesizing reversible and quantum logic for the respective target technologies. We show that the evaluation of a synthesis approach may differ if additional costs are applied. In addition, a new cost metric, namely Nearest Neighbor Cost (NNC) which is imposed by realistic physical quantum architectures, is considered in detail. We discuss how existing synthesis flows can be extended to generate optimal circuits with respect to NNC while still keeping the quantum cost small.

Robert Wille; Mehdi Saeedi; Rolf Drechsler

2010-04-26T23:59:59.000Z

49

Advanced Gate Drive for the SNS High Voltage Converter Modulator  

SciTech Connect

SLAC National Accelerator Laboratory is developing a next generation H-bridge switch plate [1], a critical component of the SNS High Voltage Converter Modulator [2]. As part of that effort, a new IGBT gate driver has been developed. The drivers are an integral part of the switch plate, which are essential to ensuring fault-tolerant, high-performance operation of the modulator. The redesigned driver improves upon the existing gate drive in several ways. The new gate driver has improved fault detection and suppression capabilities; suppression of shoot-through and over-voltage conditions, monitoring of dI/dt and Vce(sat) for fast over-current detection and suppression, and redundant power isolation are some of the added features. In addition, triggering insertion delay is reduced by a factor of four compared to the existing driver. This paper details the design and performance of the new IGBT gate driver. A simplified schematic and description of the construction are included. The operation of the fast over-current detection circuits, active IGBT over-voltage protection circuit, shoot-through prevention circuitry, and control power isolation breakdown detection circuit are discussed.

Nguyen, M.N.; Burkhart, C.; Kemp, M.A.; /SLAC; Anderson, D.E.; /Oak Ridge

2009-05-07T23:59:59.000Z

50

DAVE, Data Analysis and Visualization Environment  

Science Conference Proceedings (OSTI)

... It also allows the animation of the vibrational modes of the molecule to be seen (or saved). MARS Data Reduction. Menu ...

51

William David (Dave) Pointer receives Landis Award  

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

Nuclear Safety Materials Disposition Decontamination & Decommissioning Nuclear Criticality Safety Nuclear Data Program Nuclear Waste Form Modeling Departments Engineering...

52

DAVE, Data Analysis and Visualization Environment  

Science Conference Proceedings (OSTI)

... JD Magill, J. Paglione, P. Zavalij, MR Suchomel, and MA Green, J. Am. ... C. Broholm, JRD Copley, and RW Erwin, Journal of Physics 71, 673 ... Phys. ...

53

DAVE, Data Analysis and Visualization Environment  

Science Conference Proceedings (OSTI)

... 10.1111/j.1365-2966.2011.18675.x * Molecular mobility in solid sodium ... Structural Collapse and 45 K Superconductivity in Electron-doped CaFe 2 ...

54

Structure of the gating ring from the human large-conductance Ca[superscript 2+]-gated K[superscript +] channel  

SciTech Connect

Large-conductance Ca{sup 2+}-gated K{sup +} (BK) channels are essential for many biological processes such as smooth muscle contraction and neurotransmitter release. This group of channels can be activated synergistically by both voltage and intracellular Ca{sup 2+}, with the large carboxy-terminal intracellular portion being responsible for Ca{sup 2+} sensing. Here we present the crystal structure of the entire cytoplasmic region of the human BK channel in a Ca{sup 2+}-free state. The structure reveals four intracellular subunits, each comprising two tandem RCK domains, assembled into a gating ring similar to that seen in the MthK channel and probably representing its physiological assembly. Three Ca{sup 2+} binding sites including the Ca{sup 2+} bowl are mapped onto the structure based on mutagenesis data. The Ca{sup 2+} bowl, located within the second RCK domain, forms an EF-hand-like motif and is strategically positioned close to the assembly interface between two subunits. The other two Ca{sup 2+} (or Mg{sup 2+}) binding sites, Asp367 and Glu374/Glu399, are located on the first RCK domain. The Asp367 site has high Ca{sup 2+} sensitivity and is positioned in the groove between the amino- and carboxy-terminal subdomains of RCK1, whereas the low-affinity Mg{sup 2+}-binding Glu374/Glu399 site is positioned on the upper plateau of the gating ring and close to the membrane. Our structure also contains the linker connecting the transmembrane and intracellular domains, allowing us to dock a voltage-gated K{sup +} channel pore of known structure onto the gating ring with reasonable accuracy and generate a structural model for the full BK channel.

Wu, Yunkun; Yang, Yi; Ye, Sheng; Jiang, Youxing (Zhejiang); (UTSMC)

2010-11-12T23:59:59.000Z

55

Timing driven power gating in high-level synthesis  

Science Conference Proceedings (OSTI)

The power gating technique is useful in reducing standby leakage current, but it increases the gate delay. For a functional unit, its maximum allowable delay (for a target clock period) limits the smallest standby leakage current its power gating can ...

Shih-Hsu Huang; Chun-Hua Cheng

2009-01-01T23:59:59.000Z

56

Robust gate sizing by geometric programming  

Science Conference Proceedings (OSTI)

We present an efficient optimization scheme for gate sizing in the presence of process variations. Using a posynomial delay model, the delay constraints are modified to incorporate uncertainty in the transistor widths and effective channel lengths due ... Keywords: gate sizing, geometric program, optimization, posynomial, uncertainty ellipsoid

Jaskirat Singh; Vidyasagar Nookala; Zhi-Quan Luo; Sachin Sapatnekar

2005-06-01T23:59:59.000Z

57

Retaining latch for a water pit gate  

DOE Patents (OSTI)

The present invention relates to retaining devices which are used to latch two elements or parts together and, more particularly, to gate latches for use in locking a gate to a wall bracket in a water pit utilized to store or handle hazardous materials. A retaining latch is provided comprising a latch plate which is rotatably mounted to each end of the top of the gate and a recessed opening, formed in the gate frame, for engaging an edge of the latch plate. The latch plate is circular in profile with one side cut away or flat, such that the latch plate is D-shaped. The remaining circular edge of the latch plate comprises steps of successively reduced thickness. The stepped edge of the latch plate fits inside a recessed opening formed in the gate frame. As the latch plate is rotated, alternate steps of the latch plate are engaged by the recessed opening. When the latch plate is rotated such that the flat portion of the latch plate faces the recessed opening in the gate frame, there is no connection between the opening and the latch plate and the gate is unlatched from the gate frame.

Beale, A.R.

1996-12-31T23:59:59.000Z

58

Airport Gate Scheduling with Time Windows  

Science Conference Proceedings (OSTI)

In contrast to the existing airport gate assignment studies where flight have fixed schedules, we consider the more realistic situation where flight arrival and departure times can change. Although we minimize walking distances (or travel time) in our ... Keywords: aircraft gate scheduling, memetic algorithm, tabu search

A. Lim; B. Rodrigues; Y. Zhu

2005-09-01T23:59:59.000Z

59

Automatically closing swing gate closure assembly  

DOE Patents (OSTI)

A swing gate closure assembly for nuclear reactor tipoff assembly wherein the swing gate is cammed open by a fuel element or spacer but is reliably closed at a desired closing rate primarily by hydraulic forces in the absence of a fuel charge.

Chang, Shih-Chih (Richland, WA); Schuck, William J. (Richland, WA); Gilmore, Richard F. (Kennewick, WA)

1988-01-01T23:59:59.000Z

60

NMR quantum gate factorization through canonical cosets  

E-Print Network (OSTI)

The block canonical coset decomposition is developed as a universal algorithmic tool to synthesize n-qubit quantum gates out of experimentally realizable NMR elements. The two-, three-, and four-qubit quantum Fourier transformations are worked out as examples. The proposed decomposition bridges the state of the art numerical analysis with NMR quantum gate synthesis.

Renan Cabrera; Denys I. Bondar; Herschel A. Rabitz

2012-10-29T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

GATE Air-Sea Interaction. I: Numerical Model Calculation of Local Sea-Surface Temperatures on Diurnal Time Scales Using the GATE Version III Gridded Global Data Set  

Science Conference Proceedings (OSTI)

The numerical model of air-sea interaction previously described in Jacobs (1978), Pandolfo and Jacobs (1972) and Pandolfo (1969) is inserted at one horizontal grid point in the GATE III Gridded Global Data Set to calculate a model-generated, ...

P. S. Brown Jr.; J. P. Pandolfo; S. J. Thoren

1982-05-01T23:59:59.000Z

62

PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational...  

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

MedGate Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) PIA - Savannah River Nuclear Solution (SRNS) MedGate...

63

ESS 2012 Peer Review - Notrees Wind Storage - Jeff Gates, Duke...  

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

Notrees Energy Storage Project Jeff Gates Duke Energy jeff.gates@duke-energy.com Project Objectives * Use energy storage to increase the value and practical application of wind...

64

SPEED CONTROL SYSTEM FOR AN ACCESS GATE - Energy Innovation Portal  

An access control apparatus for an access gate. The access gate typically has a rotator that is configured to rotate around a rotator axis at a first ...

65

GATE Center of Excellence at UAB in Lightweight Materials for Automotive Applications  

SciTech Connect

This report summarizes the accomplishments of the UAB GATE Center of Excellence in Lightweight Materials for Automotive Applications. The first Phase of the UAB DOE GATE center spanned the period 2005-2011. The UAB GATE goals coordinated with the overall goals of DOE's FreedomCAR and Vehicles Technologies initiative and DOE GATE program. The FCVT goals are: (1) Development and validation of advanced materials and manufacturing technologies to significantly reduce automotive vehicle body and chassis weight without compromising other attributes such as safety, performance, recyclability, and cost; (2) To provide a new generation of engineers and scientists with knowledge and skills in advanced automotive technologies. The UAB GATE focused on both the FCVT and GATE goals in the following manner: (1) Train and produce graduates in lightweight automotive materials technologies; (2) Structure the engineering curricula to produce specialists in the automotive area; (3) Leverage automotive related industry in the State of Alabama; (4) Expose minority students to advanced technologies early in their career; (5) Develop innovative virtual classroom capabilities tied to real manufacturing operations; and (6) Integrate synergistic, multi-departmental activities to produce new product and manufacturing technologies for more damage tolerant, cost-effective, and lighter automotive structures.

None

2011-07-31T23:59:59.000Z

66

Graduate Automotive Technology Education (GATE) Center  

DOE Green Energy (OSTI)

The Graduate Automotive Technology Education (GATE) Center at the University of Tennessee, Knoxville has completed its sixth year of operation. During this period the Center has involved thirteen GATE Fellows and ten GATE Research Assistants in preparing them to contribute to advanced automotive technologies in the center's focus area: hybrid drive trains and control systems. Eighteen GATE students have graduated, and three have completed their course work requirements. Nine faculty members from three departments in the College of Engineering have been involved in the GATE Center. In addition to the impact that the Center has had on the students and faculty involved, the presence of the center has led to the acquisition of resources that probably would not have been obtained if the GATE Center had not existed. Significant industry interaction such as internships, equipment donations, and support for GATE students has been realized. The value of the total resources brought to the university (including related research contracts) exceeds $4,000,000. Problem areas are discussed in the hope that future activities may benefit from the operation of the current program.

Jeffrey Hodgson; David Irick

2005-09-30T23:59:59.000Z

67

Quantum gates and their coexisting geometric phases  

SciTech Connect

Geometric phases arise naturally in a variety of quantum systems with observable consequences. They also arise in quantum computations when dressed states are used in gating operations. Here we show how they arise in these gating operations and how one may take advantage of the dressed states producing them. Specifically, we show that for a given, but arbitrary Hamiltonian, and at an arbitrary time {tau}, there always exists a set of dressed states such that a given gate operation can be performed by the Hamiltonian up to a phase {phi}. The phase is a sum of a dynamical phase and a geometric phase. We illustrate the dressed phase for several systems.

Wu Lianao [Ikerbasque, Basque Foundation for Science, E-48011 Bilbao (Spain); Department of Theoretical Physics and History of Science, Basque Country University (EHU/UPV), P.O. Box 644, E-48080 Bilbao (Spain); Bishop, C. Allen [Physics Department, Southern Illinois University, Carbondale, Illinois 62901-4401 (United States); Byrd, Mark S. [Physics Department, Southern Illinois University, Carbondale, Illinois 62901-4401 (United States); Computer Science Department, Southern Illinois University, Carbondale, Illinois 62901 (United States)

2011-08-15T23:59:59.000Z

68

Gate potential control of nanofluidic devices  

E-Print Network (OSTI)

The effect of an external gate potential control on the nanofluidic nanochannels was experimentally investigated in this work. Like in the field effect transistors (FET) in microelectronics, molecular transport in ...

Le Coguic, Arnaud

2005-01-01T23:59:59.000Z

69

NBTI-aware power gating design  

Science Conference Proceedings (OSTI)

A header-based power gating structure inserts PMOS as sleep transistors between the power rail and the circuit. Since PMOS sleep transistors in the functional mode are turned-on continuously, Negative Bias Temperature Instability (NBTI) influences the ...

Ming-Chao Lee; Yu-Guang Chen; Ding-Kei Huang; Shih-Chieh Chang

2011-01-01T23:59:59.000Z

70

The GATE Boundary Layer Instrumentation System (BLIS)  

Science Conference Proceedings (OSTI)

A tethered sonde, the Boundary Layer Instrument System (BLIS), was designed for use from shipboard platforms in the GARP Atlantic Tropical Experiment (GATE). This system was able to monitor the thermal and kinematic properties of the boundary ...

Donald P. Wylie; Chester F. Ropelewski

1980-09-01T23:59:59.000Z

71

GaTe semiconductor for radiation detection  

SciTech Connect

GaTe semiconductor is used as a room-temperature radiation detector. GaTe has useful properties for radiation detectors: ideal bandgap, favorable mobilities, low melting point (no evaporation), non-hygroscopic nature, and availability of high-purity starting materials. The detector can be used, e.g., for detection of illicit nuclear weapons and radiological dispersed devices at ports of entry, in cities, and off shore and for determination of medical isotopes present in a patient.

Payne, Stephen A. (Castro Valley, CA); Burger, Arnold (Nashville, TN); Mandal, Krishna C. (Ashland, MA)

2009-06-23T23:59:59.000Z

72

Hybrid Electric Power Train and Control Strategies Automotive Technology Education (GATE) Program  

Science Conference Proceedings (OSTI)

Plug-in hybrid electric vehicles (PHEV) offer societal benefits through their ability to displace the use of petroleum fuels. Petroleum fuels represent a polluting and politically destabilizing energy carrier. PHEV technologies can move transportation away from petroleum fuel sources by enabling domestically generated electricity and liquids bio-fuels to serve as a carrier for transportation energy. Additionally, the All-Electric-Range (AER) offered by PHEVs can significantly reduce demand for expensive and polluting liquid fuels. The GATE funding received during the 1998 through 2004 funding cycle by the UC Davis Hybrid Electric Vehicle Center (HEVC) was used to advance and train researchers in PHEV technologies. GATE funding was used to construct a rigorous PHEV curriculum, provide financial support for HEVC researchers, and provide material support for research efforts. A rigorous curriculum was developed through the UC Davis Mechanical and Aeronautical Engineering Department to train HEVC researchers. Students' research benefited from this course work by advancing the graduate student researchers' understanding of key PHEV design considerations. GATE support assisted HEVC researchers in authoring technical articles and producing patents. By supporting HEVC researchers multiple Master's theses were written as well as journal articles and publications. The topics from these publications include Continuously Variable Transmission control strategies and PHEV cross platform controls software development. The GATE funding has been well used to advance PHEV systems. The UC Davis Hybrid Electric Vehicle Center is greatly appreciative for the opportunities GATE funding provided. The goals and objectives for the HEVC GATE funding were to nourish engineering research in PHEV technologies. The funding supplied equipment needed to allow researchers to investigate PHEV design sensitivities and to further optimize system components. Over a dozen PHEV researchers benefited from the GATE funding and produced journal articles and intellectual property as a result. The remainder of this document outlines the productivity resulting from GATE funds. The topics include the following: GATE Hybrid Vehicle Systems Related Courses; Students Supported; Publications; and Patents. A discussion regarding the HEVC accomplishments with respect to the GATE funding goals is provided in the conclusion.

Andrew Frank

2006-05-31T23:59:59.000Z

73

Sliding-gate valve for use with abrasive materials  

DOE Patents (OSTI)

The invention is a flow and pressure-sealing valve for use with abrasive solids. The valve embodies special features which provide for long, reliable operating lifetimes in solids-handling service. The valve includes upper and lower transversely slidable gates, contained in separate chambers. The upper gate provides a solids-flow control function, whereas the lower gate provides a pressure-sealing function. The lower gate is supported by means for (a) lifting that gate into sealing engagement with its seat when the gate is in its open and closed positions and (b) lowering the gate out of contact with its seat to permit abrasion-free transit of the gate between its open and closed positions. When closed, the upper gate isolates the lower gate from the solids. Because of this shielding action, the sealing surface of the lower gate is not exposed to solids during transit or when it is being lifted or lowered. The chamber containing the lower gate normally is pressurized slightly, and a sweep gas is directed inwardly across the lower-gate sealing surface during the vertical translation of the gate.

Ayers, Jr., William J. (Morgantown, WV); Carter, Charles R. (Fairmont, WV); Griffith, Richard A. (Morgantown, WV); Loomis, Richard B. (Bruceton Mills, WV); Notestein, John E. (Morgantown, WV)

1985-01-01T23:59:59.000Z

74

Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and  

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

Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders February 28, 2012 - 7:02am Addthis Washington D.C. - This week, the Advanced Research Projects Agency - Energy (ARPA-E) is hosting its third annual Energy Innovation Summit, which is designed to unite key players from all sectors of America's energy innovation community to share ideas for how to lead the world in the development of next generation clean energy technologies, develop our nation's energy resources, and build an American economy that lasts. Tomorrow's full agenda with speakers is below. For specific press requests, please contact Keri Fulton at keri.fulton@hq.doe.gov.

75

Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and  

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

Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary Chu and America's Top Energy Thought Leaders February 28, 2012 - 7:02am Addthis Washington D.C. - This week, the Advanced Research Projects Agency - Energy (ARPA-E) is hosting its third annual Energy Innovation Summit, which is designed to unite key players from all sectors of America's energy innovation community to share ideas for how to lead the world in the development of next generation clean energy technologies, develop our nation's energy resources, and build an American economy that lasts. Tomorrow's full agenda with speakers is below. For specific press requests, please contact Keri Fulton at keri.fulton@hq.doe.gov.

76

Graphene Enabled Low-Control Quantum Gates between Static and Mobile Spins  

E-Print Network (OSTI)

We show that the feature of Klein tunneling makes graphene a unique interface for implementing low control quantum gates between static and mobile qubits. A ballistic electron spin is considered as the mobile qubit, while the static qubit is the electronic spin of a quantum dot fixed in a graphene nanoribbon. Scattering is the low control mechanism of the gate, which, in other systems, is really difficult to exploit because of both back-scattering and the momentum dependence of scattering. We find that Klein tunneling enables the implementation of quasi-deterministic quantum gates regardless of the momenta or the shape of the wave function of the incident electron. The Dirac equation is used to describe the system in the one particle approximation with the interaction between the static and the mobile spins modelled by a Heisenberg Hamiltonian. Furthermore, we discuss an application of this model to generate entanglement between two well separated static qubits.

G. Cordourier-Maruri; Y. Omar; R. de Coss; S. Bose

2013-06-30T23:59:59.000Z

77

UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence  

SciTech Connect

This is the final report of the UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence which spanned from 2005-2012. The U.S. Department of Energy (DOE) established the Graduate Automotive Technology Education (GATE) Program, to provide a new generation of engineers and scientists with knowledge and skills to create advanced automotive technologies. The UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence established in 2005 is focused on research, education, industrial collaboration and outreach within automotive technology. UC Davis has had two independent GATE centers with separate well-defined objectives and research programs from 1998. The Fuel Cell Center, administered by ITS-Davis, has focused on fuel cell technology. The Hybrid-Electric Vehicle Design Center (HEV Center), administered by the Department of Mechanical and Aeronautical Engineering, has focused on the development of plug-in hybrid technology using internal combustion engines. The merger of these two centers in 2005 has broadened the scope of research and lead to higher visibility of the activity. UC Davis??s existing GATE centers have become the campus??s research focal points on fuel cells and hybrid-electric vehicles, and the home for graduate students who are studying advanced automotive technologies. The centers have been highly successful in attracting, training, and placing top-notch students into fuel cell and hybrid programs in both industry and government.

Erickson, Paul

2012-05-31T23:59:59.000Z

78

Characterizing Quantum Gates via Randomized Benchmarking  

E-Print Network (OSTI)

We describe and expand upon the scalable randomized benchmarking protocol proposed in Phys. Rev. Lett. 106, 180504 (2011) which provides a method for benchmarking quantum gates and estimating the gate-dependence of the noise. The protocol allows the noise to have weak time and gate-dependence, and we provide a sufficient condition for the applicability of the protocol in terms of the average variation of the noise. We discuss how state preparation and measurement errors are taken into account and provide a complete proof of the scalability of the protocol. We establish a connection in special cases between the error rate provided by this protocol and the error strength measured using the diamond norm distance.

Easwar Magesan; Jay M. Gambetta; Joseph Emerson

2011-09-30T23:59:59.000Z

79

Evolving GATE to meet new challenges in language engineering  

Science Conference Proceedings (OSTI)

In this paper we present recent work on GATE, a widely-used framework and graphical development environment for creating and deploying Language Engineering components and resources in a robust fashion. The GATE architecture has facilitated the development ...

Kalina Bontcheva; Valentin Tablan; Diana Maynard; Hamish Cunningham

2004-09-01T23:59:59.000Z

80

Using GATE as an environment for teaching NLP  

Science Conference Proceedings (OSTI)

In this paper we argue that the GATE architecture and visual development environment can be used as an effective tool for teaching language engineering and computational linguistics. Since GATE comes with a customisable and extendable set of components, ...

Kalina Bontcheva; Hamish Cunningham; Valentin Tablan; Diana Maynard; Oana Hamza

2002-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Simulation of multiple-gate quantum stub transistor  

Science Conference Proceedings (OSTI)

The quantum stub transistor has the potential for ultrafast, ultra low power signal processing in high density integrated circuits. However, the single gate stub transistor presents the shortcoming of requiring highly precise gate voltage to close the ... Keywords: multiple gate, simulation, stub transistor

Edval J. P. Santos; Alexandre B. Guerra

2005-08-01T23:59:59.000Z

82

Two methods of realising 10nm T-gate lithography  

Science Conference Proceedings (OSTI)

This paper presents two separate methods for the fabrication of 10nm footprint T-gates using a two-step gate process. We examine the limits of lithographic and pattern transfer processes using the exposure of ZEP520A resist by electron beam lithography, ... Keywords: Electron beam lithography, HEMT, ICP, RIE, Reactive ion etching, T-gate

S. Bentley; X. Li; D. A. J. Moran; I. G. Thayne

2009-04-01T23:59:59.000Z

83

Damascene TiN-Gd2O3-gate stacks: Gentle fabrication and electrical properties  

Science Conference Proceedings (OSTI)

In this work, we present MOS capacitors and field effect transistors with a crystalline gadolinium oxide (Gd"2O"3) gate dielectric and metal gate electrode (titanium nitride) fabricated in a gentle damascene gate last process. Details of the gate last ... Keywords: Crystalline high-k dielectrics, Damascene metal gate technology, Gadolinium oxide (Gd2O3), Gentle process integration, MOSFET, Metal gate electrode

Ralf Endres; Tillmann Krauss; Frank Wessely; Udo Schwalke

2011-12-01T23:59:59.000Z

84

Waves at 200 mb during GATE  

Science Conference Proceedings (OSTI)

A 200 mb data set obtained during the GATE experiment of the 1974 summer for the period 15 June-23 September and covering the global tropics 25S to 45N has been analyzed to determine the presence of certain wave modes in the tropical ...

Colin A. Depradine

1981-05-01T23:59:59.000Z

85

Efficient tiling patterns for reconfigurable gate arrays  

Science Conference Proceedings (OSTI)

In this paper we present a few potentially efficient tiling patterns for gate-array realizations. We start with a brief recapitulation of tiling patterns, and fundamental limits of placement/routing in a two-dimensional plane. We state the first principles ... Keywords: FPGA, hexagonal, octagonal, tiling

Sumanta Chaudhuri; Sylvain Guilley; Philippe Hoogvorst; Jean-Luc Danger

2008-04-01T23:59:59.000Z

86

Deep Convection on Day 261 of GATE  

Science Conference Proceedings (OSTI)

Aircraft, radar, satellite and ship data, gathered on 18 September 1974 during GATE, have been brought to bear an clouds of the middle and upper troposphere associated with a cloud cluster occurring near the ridge axis of a 700 mb wave.

C. Warner; J. Simpson; G. Van Helvoirt; D. W. Martin; D. Suchman; G. L. Austin

1980-02-01T23:59:59.000Z

87

Gaussian mixture CPHD filter with gating technique  

Science Conference Proceedings (OSTI)

Cardinalized probability hypothesis density (CPHD) filter provides more accurate estimates of target number than the probability hypothesis density (PHD) filter, and hence, also of the states of targets. This additional capability comes at the price ... Keywords: Finite sets statistics, Gating, Gaussian mixture, Probability hypothesis density, Target tracking

Hongjian Zhang; Zhongliang Jing; Shiqiang Hu

2009-08-01T23:59:59.000Z

88

Light-induced switching in the back-gated organic transistors with built-in conduction channel  

E-Print Network (OSTI)

We report on observation of a light-induced switching of the conductance in the back-gated organic field-effect transistors (OFETs) with built-in conduction channel. In the studied devices, the built-in channel is formed owing to the self-sensitized photo-oxidation of rubrene surface. In the dark, the back gate controls the charge injection from metal contacts into the built-in channel: the high-current ON state corresponds to zero or negative back-gate voltage; the low-current OFF state - to a positive back-gate voltage that blocks the Schottky contacts. Illumination of the OFET in the OFF state with a short pulse of light switches the device into the ON state that persists in the dark for days. The OFF state can be restored by cycling the back gate voltage. The observed effect can be explained by screening of the back-gate electric field by the charges photo-generated in the bulk of organic semiconductor.

V. Podzorov; V. M. Pudalov; M. E. Gershenson

2004-06-29T23:59:59.000Z

89

Optimal control of quantum gates and suppression of decoherence in a system of interacting two-level particles  

E-Print Network (OSTI)

Methods of optimal control are applied to a model system of interacting two-level particles (e.g., spin-half atomic nuclei or electrons or two-level atoms) to produce high-fidelity quantum gates while simultaneously negating the detrimental effect of decoherence. One set of particles functions as the quantum information processor, whose evolution is controlled by a time-dependent external field. The other particles are not directly controlled and serve as an effective environment, coupling to which is the source of decoherence. The control objective is to generate target one- and two-qubit unitary gates in the presence of strong environmentally-induced decoherence and under physically motivated restrictions on the control field. The quantum-gate fidelity, expressed in terms of a novel state-independent distance measure, is maximized with respect to the control field using combined genetic and gradient algorithms. The resulting high-fidelity gates demonstrate the feasibility of precisely guiding the quantum evolution via optimal control, even when the system complexity is exacerbated by environmental coupling. It is found that the gate duration has an important effect on the control mechanism and resulting fidelity. An analysis of the sensitivity of the gate performance to random variations in the system parameters reveals a significant degree of robustness attained by the optimal control solutions.

Matthew Grace; Constantin Brif; Herschel Rabitz; Ian A. Walmsley; Robert L. Kosut; Daniel A. Lidar

2007-02-14T23:59:59.000Z

90

Estimation of gate-to-channel tunneling current in ultra-thin oxide sub-50nm double gate devices  

Science Conference Proceedings (OSTI)

Double gate (DG) FETs have emerged as the most promising technology for sub-50nm transistor design. However, analysis and control of the gate tunneling leakage in DGFET is necessary to fully exploit their advantages. In this paper we have modeled (numerically ... Keywords: Direct tunneling, Double gate, Leakage, Quantum confinement

Saibal Mukhopadhyay; Keunwoo Kim; Jae-Joon Kim; Shih-Hsien Lo; Rajiv V. Joshi; Ching-Te Chuang; Kaushik Roy

2007-08-01T23:59:59.000Z

91

Application of group electronegativity concepts to the effective work functions of metal gate electrodes on high- ? gate oxides  

Science Conference Proceedings (OSTI)

The empirical relationship between electronegativity and effective work function is applied to a diverse set of multi-element electrode materials on hafnium dioxide (HfO"2) gate dielectrics. To accommodate the multi-element nature of metal gate electrodes ... Keywords: Effective work function, Electronegativity, Hafnium dioxide, Metal gate electrode

J. K. Schaeffer; D. C. Gilmer; C. Capasso; S. Kalpat; B. Taylor; M. V. Raymond; D. Triyoso; R. Hegde; S. B. Samavedam; B. E. White, Jr

2007-09-01T23:59:59.000Z

92

Quantum process tomography of a controlled-NOT gate  

E-Print Network (OSTI)

We demonstrate complete characterization of a two-qubit entangling process - a linear optics controlled-NOT gate operating with coincident detection - by quantum process tomography. We use maximum-likelihood estimation to convert the experimental data into a physical process matrix. The process matrix allows accurate prediction of the operation of the gate for arbitrary input states, and calculation of gate performance measures such as the average gate fidelity, average purity and entangling capability of our gate, which are 0.90, 0.83 and 0.73, respectively.

J. L. O'Brien; G. J. Pryde; A. Gilchrist; D. F. V. James; N. K. Langford; T. C. Ralph; A. G. White

2004-02-23T23:59:59.000Z

93

AgraGate Carbon Credits Corporation | Open Energy Information  

Open Energy Info (EERE)

AgraGate Carbon Credits Corporation AgraGate Carbon Credits Corporation Jump to: navigation, search Name AgraGate Carbon Credits Corporation Place Des Moines, Iowa Zip 50266 Product Offset aggregators that work with American farmers, ranchers, and private forest owners, providing clients with cash flows produced by the sale of credits. Offsets are sold on the Chicago Climate Exchange References AgraGate Carbon Credits Corporation[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. AgraGate Carbon Credits Corporation is a company located in Des Moines, Iowa . References ↑ "AgraGate Carbon Credits Corporation" Retrieved from "http://en.openei.org/w/index.php?title=AgraGate_Carbon_Credits_Corporation&oldid=341882"

94

Hafnium-doped tantalum oxide high-k gate dielectric films for future CMOS technology  

E-Print Network (OSTI)

A novel high-k gate dielectric material, i.e., hafnium-doped tantalum oxide (Hf-doped TaOx), has been studied for the application of the future generation metal-oxidesemiconductor field effect transistor (MOSFET). The film's electrical, chemical, and structural properties were investigated experimentally. The incorporation of Hf into TaOx impacted the electrical properties. The doping process improved the effective dielectric constant, reduced the fixed charge density, and increased the dielectric strength. The leakage current density also decreased with the Hf doping concentration. MOS capacitors with sub-2.0 nm equivalent oxide thickness (EOT) have been achieved with the lightly Hf-doped TaOx. The low leakage currents and high dielectric constants of the doped films were explained by their compositions and bond structures. The Hf-doped TaOx film is a potential high-k gate dielectric for future MOS transistors. A 5 ?? tantalum nitride (TaNx) interface layer has been inserted between the Hf-doped TaOx films and the Si substrate to engineer the high-k/Si interface layer formation and properties. The electrical characterization result shows that the insertion of a 5 ?? TaNx between the doped TaOx films and the Si substrate decreased the film's leakage current density and improved the effective dielectric constant (keffective) value. The improvement of these dielectric properties can be attributed to the formation of the TaOxNy interfacial layer after high temperature O2 annealing. The main drawback of the TaNx interface layer is the high interface density of states and hysteresis, which needs to be decreased. Advanced metal nitride gate electrodes, e.g., tantalum nitride, molybdenum nitride, and tungsten nitride, were investigated as the gate electrodes for atomic layer deposition (ALD) HfO2 high-k dielectric material. Their physical and electrical properties were affected by the post metallization annealing (PMA) treatment conditions. Work functions of these three gate electrodes are suitable for NMOS applications after 800?°C PMA. Metal nitrides can be used as the gate electrode materials for the HfO2 high-k film. The novel high-k gate stack structures studied in this study are promising candidates to replace the traditional poly-Si-SiO2 gate stack structure for the future CMOS technology node.

Lu, Jiang

2005-12-01T23:59:59.000Z

95

ESS 2012 Peer Review - Notrees Wind Storage - Jeff Gates, Duke Energy  

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

Notrees Energy Storage Project Notrees Energy Storage Project Jeff Gates Duke Energy jeff.gates@duke-energy.com Project Objectives * Use energy storage to increase the value and practical application of wind generation * Integrate storage with intermittent renewable energy production * Improve use of power-producing assets by storing energy during non-peak generation periods * Demonstrate benefits of using fast response energy storage to provide ancillary services for grid management * Verify that energy storage solutions can operate within the ERCOT market protocols * Demonstrate ramp control and Energy Storage System * Technology: Advanced lead-acid battery * OEM Partner - Xtreme Power (XP) * 36 MW / 24 MWh output * Modules housed in ~ 6,000 sq. ft. building Project Activities to Date * Site construction began December

96

Impact of elliptical cross-section on the propagation delay of multi-channel gate-all-around MOSFET based inverters  

Science Conference Proceedings (OSTI)

Multi-channel (MC) gate-all-around (GAA) metal-oxide-semiconductor field-effect transistor (MOSFET) is one of the promising candidates for the next-generation high performance devices. However, due to fabrication imperfections the cross-section of GAA ... Keywords: Effective diameter, Gate-all-around (GAA), Metal-oxide-semiconductor field-effect transistor (MOSFET), Multi-channel, Propagation delay, Scaling

Subindu Kumar, Shankaranand Jha

2013-09-01T23:59:59.000Z

97

Gates, Oregon: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Gates, Oregon: Energy Resources Gates, Oregon: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 44.7562329°, -122.4167483° 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":44.7562329,"lon":-122.4167483,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

98

Fractional diffusion modeling of ion channel gating  

E-Print Network (OSTI)

An anomalous diffusion model for ion channel gating is put forward. This modeling scheme is able to describe the non-exponential, power-law like gating behavior of residence time intervals in several types of ion channels. Our scheme presents a generalization of the discrete diffusion model by Millhauser, Salpeter and Oswald [Proc. Natl. Acad. Sci. USA 85, 1503 (1988)] to the case of a continuous, anomalously slow conformational diffusion. The corresponding generalization is derived from a continuous time random walk composed of nearest neighbor jumps which in the scaling limit results in a fractional diffusion equation. The studied model contains three parameters only: the mean residence time, a characteristic time of conformational diffusion, and the index of subdiffusion. A tractable analytical expression for the characteristic function of the residence time distribution (RTD) is obtained. In the limiting case of normal diffusion a prior result of Goychuk and Hanggi [Proc. Natl. Acad. Sci. USA 99, 3552 (20...

Goychuk, I; Goychuk, Igor; Hanggi, Peter

2004-01-01T23:59:59.000Z

99

Patient training in respiratory-gated radiotherapy  

Science Conference Proceedings (OSTI)

Respiratory gating is used to counter the effects of organ motion during radiotherapy for chest tumors. The effects of variations in patient breathing patterns during a single treatment and from day to day are unknown. We evaluated the feasibility of using patient training tools and their effect on the breathing cycle regularity and reproducibility during respiratory-gated radiotherapy. To monitor respiratory patterns, we used a component of a commercially available respiratory-gated radiotherapy system (Real Time Position Management (RPM) System, Varian Oncology Systems, Palo Alto, CA 94304). This passive marker video tracking system consists of reflective markers placed on the patient's chest or abdomen, which are detected by a wall-mounted video camera. Software installed on a PC interfaced to this camera detects the marker motion digitally and records it. The marker position as a function of time serves as the motion signal that may be used to trigger imaging or treatment. The training tools used were audio prompting and visual feedback, with free breathing as a control. The audio prompting method used instructions to 'breathe in' or 'breathe out' at periodic intervals deduced from patients' own breathing patterns. In the visual feedback method, patients were shown a real-time trace of their abdominal wall motion due to breathing. Using this, they were asked to maintain a constant amplitude of motion. Motion traces of the abdominal wall were recorded for each patient for various maneuvers. Free breathing showed a variable amplitude and frequency. Audio prompting resulted in a reproducible frequency; however, the variability and the magnitude of amplitude increased. Visual feedback gave a better control over the amplitude but showed minor variations in frequency. We concluded that training improves the reproducibility of amplitude and frequency of patient breathing cycles. This may increase the accuracy of respiratory-gated radiation therapy.

Kini, Vijay R.; Vedam, Subrahmanya S.; Keall, Paul J.; Patil, Sumukh; Chen, Clayton; Mohan, Radhe

2003-03-31T23:59:59.000Z

100

All-optical reversible logic gate via adiabatic population transfer  

E-Print Network (OSTI)

The Toffoli gate is an essential logic element, which permits implementation of a reversible processor. It is of relevance both for classical as well as quantum logics. We propose and theoretically study all-optical implementations of three-bit and four-bit Toffoli gates by application of adiabatic population transfer techniques. For a three-bit Toffoli gate we use variants of stimulated Raman adiabatic passage (STIRAP) processes in a $\\Lambda$-type level scheme, driven by two laser pulses at sufficiently large detunings. For the implementation of a four-bit Toffoli gate, we apply reversible adiabatic population transfer in five-level quantum systems, interacting with three laser pulses. We demonstrate correct all-optical implementation of the truth table of three-bit and four-bit Toffoli gates. Moreover, we derive conditions for adiabatic evolution of the population dynamics and robust operation of the gates.

G. Grigoryan; V. Chaltykyan; E. Gazazyan; O. Tikhova; T. Halfmann

2013-06-10T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Evaluation of hydrogen and ammonia gas mixtures with the suspended- gate field-effect transistor sensor array  

DOE Green Energy (OSTI)

Generation of hydrogen represents a severe industrial hazard primarily because the mixture of hydrogen with air in the ratio 4.0--74.2 vol % is explosive. In some industrial applications, such as waste remediation, hydrogen, as a product of radiolysis and corrosion, occurs in the presence of ammonia, nitrous oxide, water vapor and other molecules. A low cost, reliable method for monitoring these gaseous mixtures is essential. Palladium-based layers have been used successfully as hydrogen sensitive layers in several potentiometric sensors for many years. Since the sensing mechanism is based on the catalytic decomposition of hydrogen molecules, other hydrogen-bearing gases can also produce a response. From this viewpoint, using an array of sensing elements with catalytic and noncatalytic chemically selective layers in these applications can be highly effective. Moreover, integration of this array on a single chip can be routinely achieved. The Suspended Gate Field-Effect Transistor (SGFET) is microfabricated in silicon. The metal gate of the transistor is separated from the substrate by an air gap. The chemically sensitive layer is electrodeposited on the bottom of the suspended gate. Chemical species can penetrate into the gate area and interact with the sensing layer. This interaction modulates the work function of the layer. The change in the work function results in the shift of the transistor threshold voltage. The measured threshold voltage shift is a function of the gas concentration in the sensor vicinity. By passing a small current through the suspended gate, it is possible to control the operating temperature of the sensing layer (up to 200{degrees}C) and, therefore, to modulate the sensor sensitivity, selectivity, response and recovery times. Due to the very low thermal mass, the heat is localized on the gate so that many devices can be operated on a single chip, each with the gate at different temperature.

Domansky, K.; Li, H.S.; Josowicz, M.; Janata, J.

1995-12-01T23:59:59.000Z

102

High fidelity gates in quantum dot spin qubits  

E-Print Network (OSTI)

Several logical qubits and quantum gates have been proposed for semiconductor quantum dots controlled by voltages applied to top gates. Differences between the schemes can make it difficult to compare them meaningfully. Here we develop a theoretical framework to evaluate disparate qubit-gating schemes on an equal footing. We apply the procedure to two types of double-dot qubits: the singlet-triplet (ST) and the semiconducting quantum dot hybrid qubit. We investigate three quantum gates that flip the qubit state: a DC pulsed gate, an AC gate based on logical qubit resonance (LQR), and a gate-like process known as stimulated Raman adiabatic passage (STIRAP). These gates are all mediated by an exchange interaction that depends on a small number of experimental control parameters, including the interdot tunnel coupling $g$ and the detuning $\\epsilon$, which sets the energy difference between the dots. Our procedure has two steps. First, we optimize the gate fidelity ($f$) for fixed $g$ as a function of the other control parameters; this yields an $f^\\text{opt}(g)$ that is universal for different types of gates. Next, we identify physical constraints on the control parameters; this yields an upper bound $f^\\text{max}$ that is specific to the qubit-gate combination. We show that similar gate fidelities ($\\sim 99.5$%) should be attainable for ST qubits in isotopically purified Si, and for hybrid qubits in natural Si. Considerably lower fidelities are obtained for GaAs devices, due to the fluctuating magnetic fields $\\Delta B$ produced by nuclear spins.

Teck Seng Koh; S. N. Coppersmith; Mark Friesen

2013-07-31T23:59:59.000Z

103

CLUSTERING OF CYCLIC-NUCLEOTIDE-GATED CHANNELS IN OLFACTORY CILIA.  

E-Print Network (OSTI)

??Cyclic nucleotide gated (CNG) channels play an important role in mediating sensory signal transduction in olfactory receptor neurons, which takes place primarily in olfactory cilia. (more)

FLANNERY, RICHARD JOHN

2006-01-01T23:59:59.000Z

104

The Difficulty of Gate Control in Molecular Transistors  

E-Print Network (OSTI)

The electrostatic gating effects on molecular transistors are investigated using the density functional theory (DFT) combined with the nonequilibrium Green's function (NEGF) method. When molecular energy levels are away from the Fermi energy they can be linearly shifted by the gate voltage, which is consistent with recent experimental observations [Nature 462, 1039 (2009)]. However, when they move near to the Fermi energy (turn-on process), the shifts become extremely small and almost independent of the gate voltage. The fact that the conductance may be beyond the gate control in the "ON" state will challenge the implementation of molecular transistors.

D. Hou; J. H. Wei

2011-09-27T23:59:59.000Z

105

Gates/filters in Flow Cytometry Data Visualization  

E-Print Network (OSTI)

The flowViz package provides tools for visualization of flow cytometry data. This document describes the support for visualizing gates (a.k.a. filters). 1

unknown authors

2010-01-01T23:59:59.000Z

106

Gates/filters in Flow Cytometry Data Visualization  

E-Print Network (OSTI)

The flowViz package provides tools for visualization of flow cytometry data. This document describes the support for visualizing gates (a.k.a. filters). 1

unknown authors

2012-01-01T23:59:59.000Z

107

Composite Toffoli gate with two-round error detection  

E-Print Network (OSTI)

We introduce a fault-tolerant construction to implement a composite quantum operation of four overlapping Toffoli gates. The same construction can produce two independent Toffoli gates. This result lowers resource overheads in designs for quantum computers by more than an order of magnitude. The procedure uses Clifford operations and 64 copies of the non-Clifford gate $T = \\exp[i \\pi (I - \\sigma^z) /8]$. Quantum codes detect errors in the circuit. When the dominant source of error is $T$-gate failure with probability $p$, then the composite Toffoli circuit has postselected failure rate of $3072p^4$ to lowest order.

Cody Jones

2013-03-27T23:59:59.000Z

108

Speed control system for an access gate  

DOE Patents (OSTI)

An access control apparatus for an access gate. The access gate typically has a rotator that is configured to rotate around a rotator axis at a first variable speed in a forward direction. The access control apparatus may include a transmission that typically has an input element that is operatively connected to the rotator. The input element is generally configured to rotate at an input speed that is proportional to the first variable speed. The transmission typically also has an output element that has an output speed that is higher than the input speed. The input element and the output element may rotate around a common transmission axis. A retardation mechanism may be employed. The retardation mechanism is typically configured to rotate around a retardation mechanism axis. Generally the retardation mechanism is operatively connected to the output element of the transmission and is configured to retard motion of the access gate in the forward direction when the first variable speed is above a control-limit speed. In many embodiments the transmission axis and the retardation mechanism axis are substantially co-axial. Some embodiments include a freewheel/catch mechanism that has an input connection that is operatively connected to the rotator. The input connection may be configured to engage an output connection when the rotator is rotated at the first variable speed in a forward direction and configured for substantially unrestricted rotation when the rotator is rotated in a reverse direction opposite the forward direction. The input element of the transmission is typically operatively connected to the output connection of the freewheel/catch mechanism.

Bzorgi, Fariborz M. (Knoxville, TN)

2012-03-20T23:59:59.000Z

109

Twin logic gates: improved logic reliability by redundancy concerning gate oxide breakdown  

Science Conference Proceedings (OSTI)

Because of the aggressive scaling of integrated circuits and the given limits of atomic scales, circuit designers have to become more and more aware of the arising reliability and yield concerns. So far, only very little research efforts have been put ... Keywords: gate oxide breakdown, integrated circuit design, redundant systems, reliability

Hagen Saemrow; Claas Cornelius; Frank Sill; Andreas Tockhorn; Dirk Timmermann

2009-08-01T23:59:59.000Z

110

Advanced high-? dielectric stacks with polySi and metal gates: recent progress and current challenges  

Science Conference Proceedings (OSTI)

The paper reviews our recent progress and current challenges in implementing advanced gate stacks composed of high-? dielectric materials and metal gates in mainstream Si CMOS technology. In particular, we address stacks of doped polySi gate electrodes ...

E. P. Gusev; V. Narayanan; M. M. Frank

2006-07-01T23:59:59.000Z

111

Power gating design for standard-cell-like structured ASICs  

Science Conference Proceedings (OSTI)

Structured ASIC has been introduced to bridge the power, performance, area and design cost gaps between ASIC and FPGA. As technology scales, leakage power consumption becomes a serious problem. Among the leakage power reduction techniques, power gating ... Keywords: low power, power-gating, structured ASIC, via-configurable

Sin-Yu Chen; Rung-Bin Lin; Hui-Hsiang Tung; Kuen-Wey Lin

2010-03-01T23:59:59.000Z

112

Logic synthesis for low power using clock gating and rewiring  

Science Conference Proceedings (OSTI)

Traditionally, clock gating for power saving is mainly done at Register Transistor Level (RTL), while in a lower logical level some synthesis techniques, e.g. Observability Don't Care (ODC) can also be used to provide more power savings. In this paper, ... Keywords: clock gating, logic synthesis, low power

Tak-Kei Lam; Steve Yang; Wai-Chung Tang; Yu-Liang Wu

2010-05-01T23:59:59.000Z

113

Some issues in advanced CMOS gate stack performance and reliability  

Science Conference Proceedings (OSTI)

This paper summarizes and analyzes some of our previous works on the advanced gate stacks for CMOS transistors focused on the following two topics: 1. Frequency dependence of Dynamic Bias Temperature Instability (DBTI) and the transistor degradation ... Keywords: CMOS, Gate Stack, Reliability

Ming-Fu Li; X. P. Wang; C. Shen; J. J. Yang; J. D. Chen; H. Y. Yu; Chunxiang Zhu; Daming Huang

2011-12-01T23:59:59.000Z

114

Non-deterministic Gates for Photonic Single Rail Quantum Logic  

E-Print Network (OSTI)

We discuss techniques for producing, manipulating and measureing qubits encoded optically as vacuum and single photon states. We show that a universal set of non-deterministic gates can be constructed using linear optics and photon counting. We investigate the efficacy of a test gate given realistic detector efficiencies.

A. P. Lund; T. C. Ralph

2002-05-09T23:59:59.000Z

115

Controlled gates for multi-level quantum computation  

Science Conference Proceedings (OSTI)

Multi-level (ML) quantum logic can potentially reduce the number of inputs/outputs or quantum cells in a quantum circuit which is a limitation in current quantum technology. In this paper we propose theorems about ML-quantum and reversible logic circuits. ... Keywords: Controlled gate, Multi-level logic gates, Quantum computing, Quantum cost, Reversible logic

Majid Mohammadi; Aliakbar Niknafs; Mohammad Eshghi

2011-04-01T23:59:59.000Z

116

Gating internal nodes to reduce power during scan shift  

Science Conference Proceedings (OSTI)

It is a common practice to gate a limited number of scan cells in order to reduce overall switching activity during shift, thereby, reducing the circuit's dynamic power consumption. In this paper, we propose a novel approach to reduce overall shift power ... Keywords: gating internal nodes, low power test, scan shift power reduction

Dheepakkumaran Jayaraman; Rajamani Sethuram; Spyros Tragoudas

2010-05-01T23:59:59.000Z

117

Cardiac perfusion defect detection using gated dynamic spect imaging  

Science Conference Proceedings (OSTI)

In our previous work we proposed a dynamic image reconstruction procedure for gated cardiac imaging, of which the goal is to obtain a single image sequence that shows simultaneously both cardiac motion and tracer distribution change over time. In this ... Keywords: 5D reconstruction, dynamic SPECT, gated SPECT, spatio-temporal processing

Xiaofeng Niu; Yongyi Yang; Miles N. Wernick

2009-11-01T23:59:59.000Z

118

Detectability of perfusion defect in gated dynamic cardiac spect images  

Science Conference Proceedings (OSTI)

Recently we developed an image reconstruction procedure aimed to unify gated imaging and dynamic imaging in nuclear cardiac imaging. It can yield a single image sequence to show simultaneously both cardiac motion and tracer distribution change over the ... Keywords: 5D reconstruction, dynamic SPECT, gated SPECT, spatio-temporal processing

Xiaofeng Niu; Yongyi Yang; Miles N. Wernick

2009-06-01T23:59:59.000Z

119

City Marketing and Gated Communities: A Case Study of Guaynabo, Puerto Rico.  

E-Print Network (OSTI)

??This dissertation focuses on the dynamics of gated communities with attention to the municipality of Guaynabo, Puerto Rico. Despite the growing numbers of gated communities (more)

Suarez-Carrasquillo, Carlos A.

2009-01-01T23:59:59.000Z

120

Inside the Castle Gates: How Foreign Corporations Nagivate Japan's Policymaking Processes  

E-Print Network (OSTI)

II INSIDE THE CASTLE GATES: POLITICAL STRATEGIES OF MNCS INfortified castle, there are a number of strategies you mightthe castle gates (Part I), and these political strategies

Kushida, Kenji Erik

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Ca 2? permeation in cyclic nucleotide-gated channels  

E-Print Network (OSTI)

Cyclic nucleotide-gated (CNG) channels conduct Na ?, K ? and Ca2 ? currents under the control of cGMP and cAMP. Activation of CNG channels leads to depolarization of the membrane voltage and to a concomitant increase of the cytosolic Ca2 ? concentration. Several polypeptides were identified that constitute principal and modulatory subunits of CNG channels in both neurons and non-excitable cells, co-assembling to form a variety of heteromeric proteins with distinct biophysical properties. Since the contribution of each channel type to Ca2 ? signaling depends on its specific Ca2 ? conductance, it is necessary to analyze Ca2 ? permeation for each individual channel type. We have analyzed Ca2 ? permeation in all principal subunits of vertebrates and for a principal subunit from Drosophila melanogaster. We measured the fractional Ca2 ? current over the physiological range of Ca2 ? concentrations and found that Ca2 ? permeation is determined by subunit composition and modulated by membrane voltage and extracellular pH. Ca2 ? permeation is controlled by the Ca2?-binding affinity of the intrapore cation-binding site, which varies profoundly between members of the CNG channel family, and gives rise to a surprising diversity in the ability to generate Ca2 ? signals.

Claudia Dzeja; Volker Hagen; Stephan Frings

1999-01-01T23:59:59.000Z

122

Range-gated imaging for near-field target identification  

Science Conference Proceedings (OSTI)

The combination of two complementary technologies developed independently at Los Alamos National Laboratory (LANL) and Sandia National Laboratory (SNL) has demonstrated feasibility of target detection and image capture in a highly light-scattering, medium. The technique uses a compact SNL developed Photoconductive Semiconductor Switch/Laser Diode Array (PCSS/LDA) for short-range (distances of 8 to 10 m) large Field-Of-View (FOV) target illumination. Generation of a time-correlated echo signal is accomplished using a photodiode. The return image signal is recorded with a high-speed shuttered Micro-Channel-Plate Image Intensifier (MCPII), declined by LANL and manufactured by Philips Photonics. The MCPII is rated using a high-frequency impedance-matching microstrip design to produce 150 to 200 ps duration optical exposures. The ultra first shuttering producer depth resolution of a few inches along the optic axis between the MCPII and the target, producing enhanced target images effectively deconvolved from noise components from the scattering medium in the FOV. The images from the MCPII are recorded with an RS-170 Charge-Coupled-Device camera and a Big Sky, Beam Code, PC-based digitizer frame grabber and analysis package. Laser pulse data were obtained by the but jitter problems and spectral mismatches between diode spectral emission wavelength and MCPII photocathode spectral sensitivity prevented the capture of fast gating imaging with this demonstration system. Continued development of the system is underway.

Yates, G.J.; Gallegos, R.A.; McDonald, T.E. [and others

1996-12-01T23:59:59.000Z

123

The gated community: residents' crime experience and perception of safety behind gates and fences in the urban area  

E-Print Network (OSTI)

The primary purpose of the study is to explore the connections between residents' perception of safety and their crime experience, and the existence of gates and fences in multi-family housing communities in urban areas. For cultivating discussions regarding the connections between gated community territory, safety, and crime experience, this study classifies apartment communities according to the conditions of their gating and fencing: gated communities, perceived gated communities, and non-gated communities. It investigates residents' perceptions of safety and their opinions and managers' opinions on gated territory and safety. The major findings from the surveys are: Residents felt safer in gated communities than in non-gated communities. Residents' perceptions of safety in perceived gated communities were similar to those in gated communities. These results reflected the territoriality issue for improving residents' perceived safety in apartment communities. Residents' perceptions of safety in architectural spaces showed that residents' fear of crime in public and semi-public spaces must first be addressed in order to ease residents' fear of crime in an apartment territory. The reality of crime in apartment communities differed from residents' perceptions of safety. Gated community residents reported a higher crime rate than nongated community residents. In addition to gates and fences that define apartment territory, such elements as patrol services, bright lighting, direct emergency buttons, and visual access to the local police were indicated as the important factors for improving residents' perceived safety. Some architectural factors and demographic factors exhibited statistical correlations with residents' perceptions of safety. Those were types of communities, dwelling floor level, educational attainment, family size, and annual income. For predicting residents' perceptions of safety in their apartment territory, multiple regression models were obtained and residents' neighborhood attachment was also considered in the multiple regression models. The apartment community managers emphasized direct maintenance issues and residents' social contact with neighbors for improving residents' perceived safety. In conclusion, design and managerial suggestions for safer communities were proposed. For creating safer multi-family housing communities, territoriality and related architectural conditions and managerial considerations and residents' participations are emphasized. The concept of community programming for safer multi-family housing communities is suggested.

Kim, Suk Kyung

2006-08-01T23:59:59.000Z

124

DAVE: A Comprehensive Software Suite for the Reduction ...  

Science Conference Proceedings (OSTI)

... A typical class had 12 attendees and demand has remained high. ... For example 85% enriched uranium hexafluoride ( 235U0.85 238U0.15F6 ) is ...

2009-11-09T23:59:59.000Z

125

Day 2 - Thurs Plenary 3 - Dave Thomas.ppt  

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

DEAD IN 7 MINUTES DEAD IN 7 MINUTES "But, it can't happen to me." TAKE-AWAY MINDFULNESS IS A "PRACTICAL" TOOL IN FOREST FIREFIGHTING OBJECTIVES v Mindfulness v Up's and down's v Practical Tips South Canyon Fatality Area, August 1994 Shame & Stupidity WEICK & SUTCLIFFE Disconfirm Expectations If we just follow our procedures, checklists, plans, events will unfold as we think they should. "H2 would not be a great risk...light fuels & rocky areas in Cache Bar..." 1. Preoccupation with failure "Any lapse is seen as symptom that something could be wrong with the larger system." Weick/Sutcliffe 2. Reluctance to Simplify Relentless attack on simplification. 3. Sensitivity to Operations Seeing what is actually going on: the "Big Picture"

126

Oak Ridge Centers for Manufacturing Technology: Dave Beck tells...  

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

"In six years we tracked over 1B in private sector benefits through our 1-800-4USA number as declared by our customers. I knew we had arrived when I was told that the...

127

Featherweight Generic Confinement Alex Potanin, James Noble, Dave Clarke1  

E-Print Network (OSTI)

- ten in one protection domain (say one Java package) should, when executed, never directly refer.2 Packages and Owner Classes FGJ+c types such as M, S, and World represent packages (or protection domains object, where confinement is limited to static protection domains, such as as Java-like packages. We plan

Potanin, Alex

128

ESS 2012 Peer Review - Sodium-based Battery Development - Dave...  

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

Nuclear Security Administration under contract DE-AC04-94AL85000. Sodium-based Battery Development A Family of Batteries for Large Scale Energy Storage D. Ingersoll, C....

129

"Ask Argonne" - Dave Grabaskas, Nuclear Engineer, Part 2 | Argonne...  

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

--Manufacturing -Energy sources --Renewable energy ---Bioenergy ---Solar energy --Fossil fuels ---Natural Gas --Nuclear energy ---Nuclear energy modeling & simulation...

130

MaGate Simulator: A Simulation Environment for a Decentralized Grid Scheduler  

Science Conference Proceedings (OSTI)

This paper presents a simulator for of a decentralized modular grid scheduler named MaGate. MaGate's design emphasizes scheduler interoperability by providing intelligent scheduling serving the grid community as a whole. Each MaGate scheduler instance ... Keywords: Grid Scheduling, MaGate Simulator, Simulation, SmartGRID

Ye Huang; Amos Brocco; Michele Courant; Beat Hirsbrunner; Pierre Kuonen

2009-08-01T23:59:59.000Z

131

Nanocrystals Embedded Zirconium-doped Hafnium Oxide High-k Gate Dielectric Films  

E-Print Network (OSTI)

Nanocrystals embedded zirconium-doped hafnium oxide (ZrHfO) high-k gate dielectric films have been studied for the applications of the future metal oxide semiconductor field effect transistor (MOSFET) and nonvolatile memory. ZrHfO has excellent gate dielectric properties and can be prepared into MOS structure with a low equivalent oxide thickness (EOT). Ruthenium (Ru) modification effects on the ZrHfO high-k MOS capacitor have been investigated. The bulk and interfacial properties changed with the inclusion of Ru nanoparticles. The permittivity of the ZrHfO film was increased while the energy depth of traps involved in the current transport was lowered. However, the barrier height of titanium nitride (TiN)/ZrHfO was not affected by the Ru nanoparticles. These results can be important to the novel metal gate/high-k/Si MOS structure. The Ru-modified ZrHfO gate dielectric film showed a large breakdown voltage and a long lifetime. The conventional polycrystalline Si (poly-Si) charge trapping layer can be replaced by the novel floating gate structure composed of discrete nanodots embedded in the high-k film. By replacing the SiO2 layer with the ZrHfO film, promising memory functions, e.g., low programming voltage and long charge retention time, can be expected. In this study, the ZrHfO high-k MOS capacitors that separately contain nanocrystalline ruthenium oxide (nc-RuO), indium tin oxide (nc-ITO), and zinc oxide (nc-ZnO) have been successfully fabricated by the sputtering deposition method followed with the rapid thermal annealing process. Material and electrical properties of these kinds of memory devices have been investigated using analysis tools such as XPS, XRD, and HRTEM; electrical characterizations such as C-V, J-V, CVS, and frequency-dependent measurements. All capacitors showed an obvious memory window contributed by the charge trapping effect. The formation of the interface at the nc-RuO/ZrHfO and nc-ITO/ZrHfO contact regions was confirmed by the XPS spectra. Charges were deeply trapped to the bulk nanocrystal sites. However, a portion of holes were loosely trapped at the nanocrystal/ZrHfO interface. Charges trapped to the different sites lead to different detrapping characteristics. For further improving the memory functions, the dual-layer nc-ITO and -ZnO embedded ZrHfO gate dielectric stacks have been fabricated. The dual-layer embedded structure contains two vertically-separated nanocrystal layers with a higher density than the single-layer embedded structure. The critical memory functions, e.g., memory window, programming efficiency, and charge retention can be improved by using the dual-layer nanocrystals embedded floating gate structure. This kind of gate dielectric stack is vital for the next-generation nonvolatile memory applications.

Lin, Chen-Han

2011-08-01T23:59:59.000Z

132

Characterization of silicon surface preparation processes for advanced gate dielectrics  

Science Conference Proceedings (OSTI)

This paper gives a short overview of issues associated with the surface preparation of silicon surfaces for advanced gate dielectrics and the appearance and nature of the wafer surface after different chemical treatments. The main portion of the paper ...

H. F. Okorn-Schmidt

1999-05-01T23:59:59.000Z

133

The Inference of GATE Convective Rainfall from SMS-1 Imagery  

Science Conference Proceedings (OSTI)

Quantitative precipitation estimates have been made for the GARP (Global Atmospheric Research Program) Atlantic Tropical Experiment (GATE) from geosynchronous, infrared satellite imagery and a computer-automated technique that is described in ...

William L. Woodley; Cecilia G. Griffith; Joseph S. Griffin; Scott C. Stromatt

1980-04-01T23:59:59.000Z

134

A Comparison of Two Satellite Rainfall Estimates for GATE  

Science Conference Proceedings (OSTI)

Rainfall estimates obtained for the GATE experiment by two satellite rainfall estimation techniques are compared for different time and space scales. The Kilonsky-Ramage technique uses polar-orbiting satellites for 1 resolution rainfall ...

Oswaldo Garcia

1981-04-01T23:59:59.000Z

135

Molecular Mechanisms of a Retinal Cyclic Nucleotide-Gated Channel.  

E-Print Network (OSTI)

??Cyclic nucleotide-gated (CNG) channels mediate the transduction of light signals to electrical signals in vertebrate photoreceptors. These channels are non-selective for cations and open upon (more)

Martinez-Francois, Juan R

2009-01-01T23:59:59.000Z

136

TransForum v2n4 - GATE  

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

with a "real-world" industrial base made up of 16 partners (such as British Petroleum, Exxon, General Motors, and Honda). The Ohio State University (OSU) GATE program is also...

137

Induction-based gate-level verification of multipliers  

Science Conference Proceedings (OSTI)

We propose a method based on unrolling the inductive definition of binary number multiplication to verify gate-level implementations of multipliers. The induction steps successively reduce the size of the multiplier under verification. Through induction, ...

Ying Tsai Chang; Kwang Ting Tim Cheng

2001-11-01T23:59:59.000Z

138

Electroluminescence in ion gel gated organic polymer semiconductor transistors  

E-Print Network (OSTI)

emission in ion gel gated, thin film organic semiconductor tran- sistors and investigates the light emission mechanism behind these devices. We report that ion gel gated organic polymer semiconductor transistors emit light when the drain source volt- age... the organic light emitting devices become mainstream, there are several challenges that need to be resolved and current research focus is to ad- dress those challenges. One particular challenge is relatively high operating volt- ages of light emitting organic...

Bhat, Shrivalli

2011-07-12T23:59:59.000Z

139

Experimental demonstration of a Hadamard gate for coherent state qubits  

SciTech Connect

We discuss and make an experimental test of a probabilistic Hadamard gate for coherent state qubits. The scheme is based on linear optical components, nonclassical resources, and the joint projective action of a photon counter and a homodyne detector. We experimentally characterize the gate for the coherent states of the computational basis by full tomographic reconstruction of the transformed output states. Based on the parameters of the experiment, we simulate the fidelity for all coherent state qubits on the Bloch sphere.

Tipsmark, Anders; Laghaout, Amine; Andersen, Ulrik L. [Department of Physics, Technical University of Denmark, Fysikvej, DK-2800 Kgs. Lyngby (Denmark); Dong, Ruifang [Quantum Frequency Standards Division, National Time Service Center (NTSC), Chinese Academy of Sciences, 710600 Lintong, Shaanxi (China); Department of Physics, Technical University of Denmark, Fysikvej, DK-2800 Kgs. Lyngby (Denmark); Marek, Petr [Department of Optics, Palacky University, 17. listopadu 12, CZ-77146 Olomouc (Czech Republic); Jezek, Miroslav [Department of Optics, Palacky University, 17. listopadu 12, CZ-77146 Olomouc (Czech Republic); Department of Physics, Technical University of Denmark, Fysikvej, DK-2800 Kgs. Lyngby (Denmark)

2011-11-15T23:59:59.000Z

140

Final Technical GATE Report, 1998-2006  

SciTech Connect

In 1998, the U.S. Department of Energy (DOE) funded 10 proposals to establish graduate automotive technology education (GATE) centers of excellence at nine universities, each addressing a specific technological area. The University of California, Davis was chosen for two centers: Fuel Cell Center and Hybrid-Electric Vehicle Design Center (power drivetrains and control strategies). This report is specific to the Fuel Cell Center only, which was housed at the UC Davis Institute of Transportation Studies (ITS-Davis). ITS-Davis created the Fuel Cell Vehicle Center, with the following goals: (1) create an interdisciplinary fuel cell vehicle curriculum that cuts across engineering, the physical sciences and, to a lesser extent, the social sciences; (2) expand and strengthen the then-emerging multidisciplinary fuel cell vehicle research program; (3) strengthen links with industry; (4) create an active public outreach program; and (5) serve as neutral ground for interactions between academia, the auto, energy, and technology industries, government, and public-interest non-governmental organizations. At the time of proposal, the Center had a solid track record in fuel cell research, strong connections with industry, strong campus support, a core group of distinguished and motivated faculty, and an established institutional foundation for fuel cell vehicle research and education.

GATE Fuel Cell Vehicle Center

2006-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Gated integrator with signal baseline subtraction  

DOE Patents (OSTI)

An ultrafast, high precision gated integrator includes an opamp having differential inputs. A signal to be integrated is applied to one of the differential inputs through a first input network, and a signal indicative of the DC offset component of the signal to be integrated is applied to the other of the differential inputs through a second input network. A pair of electronic switches in the first and second input networks define an integrating period when they are closed. The first and second input networks are substantially symmetrically constructed of matched components so that error components introduced by the electronic switches appear symmetrically in both input circuits and, hence, are nullified by the common mode rejection of the integrating opamp. The signal indicative of the DC offset component is provided by a sample and hold circuit actuated as the integrating period begins. The symmetrical configuration of the integrating circuit improves accuracy and speed by balancing out common mode errors, by permitting the use of high speed switching elements and high speed opamps and by permitting the use of a small integrating time constant. The sample and hold circuit substantially eliminates the error caused by the input signal baseline offset during a single integrating window.

Wang, Xucheng (Lisle, IL)

1996-01-01T23:59:59.000Z

142

Gated integrator with signal baseline subtraction  

DOE Patents (OSTI)

An ultrafast, high precision gated integrator includes an opamp having differential inputs. A signal to be integrated is applied to one of the differential inputs through a first input network, and a signal indicative of the DC offset component of the signal to be integrated is applied to the other of the differential inputs through a second input network. A pair of electronic switches in the first and second input networks define an integrating period when they are closed. The first and second input networks are substantially symmetrically constructed of matched components so that error components introduced by the electronic switches appear symmetrically in both input circuits and, hence, are nullified by the common mode rejection of the integrating opamp. The signal indicative of the DC offset component is provided by a sample and hold circuit actuated as the integrating period begins. The symmetrical configuration of the integrating circuit improves accuracy and speed by balancing out common mode errors, by permitting the use of high speed switching elements and high speed opamps and by permitting the use of a small integrating time constant. The sample and hold circuit substantially eliminates the error caused by the input signal baseline offset during a single integrating window. 5 figs.

Wang, X.

1996-12-17T23:59:59.000Z

143

Text Generation for Abstractive Summarization  

Science Conference Proceedings (OSTI)

... years to come. References Hamish Cunningham, Diana Maynard, Kalina Bontcheva, and Valentin Tablan. 2002. GATE: A ...

2011-03-18T23:59:59.000Z

144

Free-surface flow simulations for discharge-based operation of hydraulic structure gates  

E-Print Network (OSTI)

We combine non-hydrostatic flow simulations of the free surface with a discharge model based on elementary gate flow equations for decision support in operation of hydraulic structure gates. A water level-based gate control used in most of today's general practice does not take into account the fact that gate operation scenarios producing similar total discharged volumes and similar water levels may have different local flow characteristics. Accurate and timely prediction of local flow conditions around hydraulic gates is important for several aspects of structure management: ecology, scour, flow-induced gate vibrations and waterway navigation. The modelling approach is described and tested for a multi-gate sluice structure regulating discharge from a river to the sea. The number of opened gates is varied and the discharge is stabilized with automated control by varying gate openings. The free-surface model was validated for discharge showing a correlation coefficient of 0.994 compared to experimental data. A...

Erdbrink, C D; Sloot, P M A

2012-01-01T23:59:59.000Z

145

Process damage-free damascene metal gate technology for gentle integration of epitaxially grown high-k  

Science Conference Proceedings (OSTI)

This paper presents the first successful attempt to integrate crystalline high-k gate dielectrics into a virtually damage-free damascene metal gate process. Process details as well as initial electrical characterization results on fully functional gate ... Keywords: CMP, Crystalline high-k gate dielectric, Damascene metal gate, Gadolinium oxide, Rare-earth oxide

Ralf Endres; Yordan Stefanov; Frank Wessely; Florian Zaunert; Udo Schwalke

2008-01-01T23:59:59.000Z

146

Thyristor stack for pulsed inductive plasma generation  

Science Conference Proceedings (OSTI)

A thyristor stack for pulsed inductive plasma generation has been developed and tested. The stack design includes a free wheeling diode assembly for current reversal. Triggering of the device is achieved by a high side biased, self supplied gate driver unit using gating energy derived from a local snubber network. The structure guarantees a hard firing gate pulse for the required high dI/dt application. A single fiber optic command is needed to achieve a simultaneous turn on of the thyristors. The stack assembly is used for switching a series resonant circuit with a ringing frequency of 30 kHz. In the prototype pulsed power system described here an inductive discharge has been generated with a pulse duration of 120 {mu}s and a pulse energy of 50 J. A maximum power transfer efficiency of 84% and a peak power of 480 kW inside the discharge were achieved. System tests were performed with a purely inductive load and an inductively generated plasma acting as a load through transformer action at a voltage level of 4.1 kV, a peak current of 5 kA, and a current switching rate of 1 kA/{mu}s.

Teske, C.; Jacoby, J.; Schweizer, W.; Wiechula, J. [Plasmaphysics Group, Institute of Applied Physics, Johann-Wolfgang-Goethe University, 60438 Frankfurt am Main (Germany)

2009-03-15T23:59:59.000Z

147

An optical fusion gate for W-states  

E-Print Network (OSTI)

We introduce a simple optical gate to fuse arbitrary size polarization entangled W-states to prepare larger W-states. The gate requires a polarizing beam splitter (PBS), a half wave plate (HWP) and two photon detectors. We study numerically and analytically the necessary resource consumption for preparing larger W-states by fusing smaller ones with the proposed fusion gate. We show analytically that resource requirement scales at most sub-exponentially with the increasing size of the state to be prepared. We numerically determine the resource cost for fusion without recycling where W-states of arbitrary size can be optimally prepared. Moreover, we introduce another strategy which is based on recycling and outperforms the optimal strategy for non-recycling case.

Sahin Kaya Ozdemir; Eiji Matsunaga; Toshiyuki Tashima; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto

2011-03-11T23:59:59.000Z

148

A dose point kernel database using GATE Monte Carlo simulation toolkit for nuclear medicine applications: Comparison with other Monte Carlo codes  

Science Conference Proceedings (OSTI)

Purpose: GATE is a Monte Carlo simulation toolkit based on the Geant4 package, widely used for many medical physics applications, including SPECT and PET image simulation and more recently CT image simulation and patient dosimetry. The purpose of the current study was to calculate dose point kernels (DPKs) using GATE, compare them against reference data, and finally produce a complete dataset of the total DPKs for the most commonly used radionuclides in nuclear medicine. Methods: Patient-specific absorbed dose calculations can be carried out using Monte Carlo simulations. The latest version of GATE extends its applications to Radiotherapy and Dosimetry. Comparison of the proposed method for the generation of DPKs was performed for (a) monoenergetic electron sources, with energies ranging from 10 keV to 10 MeV, (b) beta emitting isotopes, e.g., {sup 177}Lu, {sup 90}Y, and {sup 32}P, and (c) gamma emitting isotopes, e.g., {sup 111}In, {sup 131}I, {sup 125}I, and {sup 99m}Tc. Point isotropic sources were simulated at the center of a sphere phantom, and the absorbed dose was stored in concentric spherical shells around the source. Evaluation was performed with already published studies for different Monte Carlo codes namely MCNP, EGS, FLUKA, ETRAN, GEPTS, and PENELOPE. A complete dataset of total DPKs was generated for water (equivalent to soft tissue), bone, and lung. This dataset takes into account all the major components of radiation interactions for the selected isotopes, including the absorbed dose from emitted electrons, photons, and all secondary particles generated from the electromagnetic interactions. Results: GATE comparison provided reliable results in all cases (monoenergetic electrons, beta emitting isotopes, and photon emitting isotopes). The observed differences between GATE and other codes are less than 10% and comparable to the discrepancies observed among other packages. The produced DPKs are in very good agreement with the already published data, which allowed us to produce a unique DPKs dataset using GATE. The dataset contains the total DPKs for {sup 67}Ga, {sup 68}Ga, {sup 90}Y, {sup 99m}Tc, {sup 111}In, {sup 123}I, {sup 124}I, {sup 125}I, {sup 131}I, {sup 153}Sm, {sup 177}Lu {sup 186}Re, and {sup 188}Re generated in water, bone, and lung. Conclusions: In this study, the authors have checked GATE's reliability for absorbed dose calculation when transporting different kind of particles, which indicates its robustness for dosimetry applications. A novel dataset of DPKs is provided, which can be applied in patient-specific dosimetry using analytical point kernel convolution algorithms.

Papadimitroulas, Panagiotis; Loudos, George; Nikiforidis, George C.; Kagadis, George C. [Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece) and Department of Medical Instruments Technology, Technological Educational institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece); Department of Medical Instruments Technology, Technological Educational institute of Athens, Ag. Spyridonos Street, Egaleo GR 122 10, Athens (Greece); Department of Medical Physics, School of Medicine, University of Patras, Rion, GR 265 04 (Greece)

2012-08-15T23:59:59.000Z

149

Four-Dimensional Analysis Experiment During the Gate Period Part II  

Science Conference Proceedings (OSTI)

The GATE analysis was repeated utilizing the full GATE data set in the delayed mode and a revised four-dimensional analysis procedure. The resulting maps wore compared with maps of other author. Based on the new analysis, macroscale circulation ...

K. Miyakoda; J. Sheldon; J. Sirutis

1982-03-01T23:59:59.000Z

150

Gate-all-around silicon nanowire MOSFETs : top-down fabrication and transport enhancement techniques  

E-Print Network (OSTI)

Scaling MOSFETs beyond 15 nm gate lengths is extremely challenging using a planar device architecture due to the stringent criteria required for the transistor switching. The top-down fabricated, gate-all-around architecture ...

Hashemi, Pouya

2010-01-01T23:59:59.000Z

151

Physical-aware simulated annealing optimization of gate leakage in nanoscale datapath circuits  

Science Conference Proceedings (OSTI)

For CMOS technologies below 65nm, gate oxide direct tunneling current is a major component of the total power dissipation. This paper presents a simulated annealing based algorithm for the gate leakage current reduction by simultaneous scheduling, allocation ...

Saraju P. Mohanty; Ramakrishna Velagapudi; Elias Kougianos

2006-03-01T23:59:59.000Z

152

Developing Reusable and Robust Language Processing Components for Information Systems using GATE  

Science Conference Proceedings (OSTI)

In this paper we present GATE, an architecture and a graphical development environment which enables users to develop and deploy HLT applications in a robust fashion. GATE also provides reusable, extendable, and customisable language processing modules ...

Kalina Bontcheva; Hamish Cunningham; Diana Maynard; Valentin Tablan; Horacio Saggion

2002-09-01T23:59:59.000Z

153

Embedded automatic parking management system based on RFID and existed gate system integration  

Science Conference Proceedings (OSTI)

In this paper, an Embedded Automatic Parking Management System (EAPMS) that integrates the existed gate system and RFID is proposed. This system includes Embedded Gate Hardware, Gate-PC Controller, RFID System, Parking Management Platform. Most systems ... Keywords: RFID, embedded, parking management, system integration

Ming-Shen Jian; Kuen Shiuh Yang; Chung-Lun Lee; Nan-Yuan Huang

2008-07-01T23:59:59.000Z

154

Modular RFID parking management system based on existed gate system integration  

Science Conference Proceedings (OSTI)

In this paper, a Modular RFID Parking Management System that integrates the existed gate system and RFID is proposed. This system includes Modular Gate-PC Controller and Embedded Gate Hardware, RFID System, Modular Parking Management Platform. Most systems ... Keywords: RFID, embedded, modular, parking management, system integration

Ming-Shen Jian; Kuen Shiuh Yang; Chung-Lun Lee

2008-06-01T23:59:59.000Z

155

Reducing transistor count in clocked standard cells with ambipolar double-gate FETs  

Science Conference Proceedings (OSTI)

This paper presents a set of circuit design approaches to achieve clocked standard logic cell functions with ambipolar double-gate devices such as the Double Gate Carbon Nanotube FET (DG-CNTFET). The cells presented in this work use the infield controllability ... Keywords: CNTFETs, advanced technologies, ambipolar double-gate devices, dynamic logic, standard cells

K. Jabeur; D. Navarro; I. O'Connor; P. E. Gaillardon; M. H. Ben Jamaa; F. Clermidy

2010-06-01T23:59:59.000Z

156

MaGate: An Interoperable, Decentralized and Modular High-Level Grid Scheduler  

Science Conference Proceedings (OSTI)

This work presents the design and architecture of a decentralized grid scheduler named MaGate, which is developed within the SmartGRID project and focuses on grid scheduler interoperation. The MaGate scheduler is modular structured, and emphasizes the ... Keywords: Grid Computing, MaGate Scheduler, Meta-Scheduling, Scheduling, SmartGRID

Ye Huang; Amos Brocco; Michele Courant; Beat Hirsbrunne; Pierre Kuonen

2010-07-01T23:59:59.000Z

157

Integrated Power-Gating and State Assignment for Low Power FSM Synthesis  

Science Conference Proceedings (OSTI)

Power-gating is an effective technique for reducing standby leakage power and dynamic power. In power-gating one can shut off the power supply to sections of logic block while keeping other logic blocks active. However, careful design is required to ... Keywords: Low power synthesis, Power-gating, FSM decomposition, State encoding, Genetic Algorithm

Sambhu Nath Pradhan; M. Tilak Kumar; Santanu Chattopadhyay

2008-04-01T23:59:59.000Z

158

Low power interconnect design for fpgas with bidirectional wiring using nanocrystal floating gate devices (abstract only)  

Science Conference Proceedings (OSTI)

New architectures for the switch box and connection block are proposed for use in an energy efficient field programmable gate array (FPGA) with bidirectional wiring. Power-hungry SRAMs are replaced by non-volatile nanocrystal floating gate (NCFG) devices ... Keywords: bidirectional wiring, connection block, floating gate, fpga, high speed, low power, nanocrystal, switch box

Daniel Schinke; Wallace Shep Pitts; Neil Di Spigna; Paul Franzon

2011-02-01T23:59:59.000Z

159

Distributed Generation  

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

Untapped Value of Backup Generation Untapped Value of Backup Generation While new guidelines and regulations such as IEEE (Institute of Electrical and Electronics Engineers) 1547 have come a long way in addressing interconnection standards for distributed generation, utilities have largely overlooked the untapped potential of these resources. Under certain conditions, these units (primarily backup generators) represent a significant source of power that can deliver utility services at lower costs than traditional centralized solutions. These backup generators exist today in large numbers and provide utilities with another option to reduce peak load, relieve transmission congestion, and improve power reliability. Backup generation is widely deployed across the United States. Carnegie Mellon's Electricity

160

Temperature-controlled molecular depolarization gates in nuclear magnetic resonance  

SciTech Connect

Down the drain: Cryptophane cages in combination with selective radiofrequency spin labeling can be used as molecular 'transpletor' units for transferring depletion of spin polarization from a hyperpolarized 'source' spin ensemble to a 'drain' ensemble. The flow of nuclei through the gate is adjustable by the ambient temperature, thereby enabling controlled consumption of hyperpolarization.

Schroder, Leif; Schroder, Leif; Chavez, Lana; Meldrum, Tyler; Smith, Monica; Lowery, Thomas J.; E. Wemmer, David; Pines, Alexander

2008-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Towards practical biomolecular computers using microfluidic deoxyribozyme logic gate networks  

Science Conference Proceedings (OSTI)

We propose a way of implementing a biomolecular computer in the laboratory using deoxyribozyme logic gates inside a microfluidic reaction chamber. We build upon our previous work, which simulated the operation of a flip-flop and an oscillator based on ...

Joseph Farfel; Darko Stefanovic

2005-06-01T23:59:59.000Z

162

Quantification of Priority-OR gates in temporal fault trees  

Science Conference Proceedings (OSTI)

Fault Tree Analysis has been used in reliability engineering for many decades and has seen various modifications to enable it to analyse fault trees with dynamic and temporal gates so it can incorporate sequential failure in its analysis. Pandora is ... Keywords: Markov chains, Monte Carlo, Pandora, dynamic fault trees, fault trees, safety

Ernest Edifor; Martin Walker; Neil Gordon

2012-09-01T23:59:59.000Z

163

Tropical Squall Lines over the Eastern Atlantic during GATE  

Science Conference Proceedings (OSTI)

During the entire period of GATE, all oceanic squall lines over the A/B array developed in the vicinity of the near-equatorial convergence zone (NECZ) when a strong midtropospheric easterly jet along the leading and southern borders of a Saharan ...

Yi-Leng Chen

1985-11-01T23:59:59.000Z

164

Experimental Realization of Non-Abelian Geometric Gates  

E-Print Network (OSTI)

The geometric aspects of quantum mechanics are underlined most prominently by the concept of geometric phases, which are acquired whenever a quantum system evolves along a closed path in Hilbert space. The geometric phase is determined only by the shape of this path and is -- in its simplest form -- a real number. However, if the system contains degenerate energy levels, matrix-valued geometric phases, termed non-abelian holonomies, can emerge. They play an important role for the creation of synthetic gauge fields in cold atomic gases and the description of non-abelian anyon statistics. Moreover, it has been proposed to exploit non-abelian holonomic gates for robust quantum computation. In contrast to abelian geometric phases, non-abelian ones have been observed only in nuclear quadrupole resonance experiments with a large number of spins and without fully characterizing the geometric process and its non-commutative nature. Here, we realize non-abelian holonomic quantum operations on a single superconducting artificial three-level atom by applying a well controlled two-tone microwave drive. Using quantum process tomography, we determine fidelities of the resulting non-commuting gates exceeding 95 %. We show that a sequence of two paths in Hilbert space traversed in different order yields inequivalent transformations, which is an evidence for the non-abelian character of the implemented holonomic quantum gates. In combination with two-qubit operations, they form a universal set of gates for holonomic quantum computation.

A. A. Abdumalikov; J. M. Fink; K. Juliusson; M. Pechal; S. Berger; A. Wallraff; S. Filipp

2013-04-18T23:59:59.000Z

165

USLCI Database_Electricity, at Grid, US, 2008 Gate to gate life...  

Open Energy Info (EERE)

of fuels used for utility electricity generation in US. Fuels include biomass, coal, petroleum, geothermal, natural gas, nuclear, solar, hydroelectric and wind energy...

166

Transmission gates combined with level-restoring CMOS gates reduce glitches in low-power low-frequency multipliers  

Science Conference Proceedings (OSTI)

Various 16-bit multiplier architectures are compared in terms of dissipated energy, propagation delay, energy-delay product (EDP), and area occupation, in view of low-power low-voltage signal processing for low-frequency applications. A novel practical ... Keywords: arithmetic, glitch, low frequency, low power, multiplier, switching activity, transmission gate

Flavio Carbognani; Felix Buergin; Norbert Felber; Hubert Kaeslin; Wolfgang Fichtner

2008-07-01T23:59:59.000Z

167

Phase gate of one superconducting qubit simultaneously controlling n qubits in a cavity  

E-Print Network (OSTI)

We propose how to realize a three-step controlled-phase gate of one superconducting qubit simultaneously controlling n qubits selected from N qubits in a cavity (1nN). The operation time of this gate is independent of the number n of qubits involved in the gate operation. This phase gate controlling at once n qubits is insensitive to the initial state of the cavity mode and can be used to produce an analogous CNOT gate simultaneously acting on n qubits.

Chui-Ping Yang; Yu-xi Liu; Franco Nori

2009-07-24T23:59:59.000Z

168

A real-time respiration position based passive breath gating equipment for gated radiotherapy: A preclinical evaluation  

Science Conference Proceedings (OSTI)

Purpose: To develop a passive gating system incorporating with the real-time position management (RPM) system for the gated radiotherapy. Methods: Passive breath gating (PBG) equipment, which consists of a breath-hold valve, a controller mechanism, a mouthpiece kit, and a supporting frame, was designed. A commercial real-time positioning management system was implemented to synchronize the target motion and radiation delivery on a linear accelerator with the patient's breathing cycle. The respiratory related target motion was investigated by using the RPM system for correlating the external markers with the internal target motion while using PBG for passively blocking patient's breathing. Six patients were enrolled in the preclinical feasibility and efficiency study of the PBG system. Results: PBG equipment was designed and fabricated. The PBG can be manually triggered or released to block or unblock patient's breathing. A clinical workflow was outlined to integrate the PBG with the RPM system. After implementing the RPM based PBG system, the breath-hold period can be prolonged to 15-25 s and the treatment delivery efficiency for each field can be improved by 200%-400%. The results from the six patients showed that the diaphragm motion caused by respiration was reduced to less than 3 mm and the position of the diaphragm was reproducible for difference gating periods. Conclusions: A RPM based PBG system was developed and implemented. With the new gating system, the patient's breath-hold time can be extended and a significant improvement in the treatment delivery efficiency can also be achieved.

Hu Weigang; Xu Anjie; Li Guichao; Zhang Zhen; Housley, Dave; Ye Jinsong [Department of Radiation Oncology, Fudan University Shanghai Cancer Center and Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032 (China); Department of Radiation Oncology, Swedish Cancer Institute, Seattle, Washington 98104 (United States)

2012-03-15T23:59:59.000Z

169

Distributed Generation  

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

with another option to reduce peak load, relieve transmission congestion, and improve power reliability. Backup generation is widely deployed across the United States. Carnegie...

170

South Gate, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Gate, California: Energy Resources Gate, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 33.954737°, -118.2120161° 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":33.954737,"lon":-118.2120161,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

171

Ocean Gate, New Jersey: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Gate, New Jersey: Energy Resources Gate, New Jersey: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.926785°, -74.1337496° 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":39.926785,"lon":-74.1337496,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

172

Bayesian estimation of one-parameter qubit gates  

E-Print Network (OSTI)

We address estimation of one-parameter unitary gates for qubit systems and seek for optimal probes and measurements. Single- and two-qubit probes are analyzed in details focusing on precision and stability of the estimation procedure. Bayesian inference is employed and compared with the ultimate quantum limits to precision, taking into account the biased nature of Bayes estimator in the non asymptotic regime. Besides, through the evaluation of the asymptotic a posteriori distribution for the gate parameter and the comparison with the results of Monte Carlo simulated experiments, we show that asymptotic optimality of Bayes estimator is actually achieved after a limited number of runs. The robustness of the estimation procedure against fluctuations of the measurement settings is investigated and the use of entanglement to improve the overall stability of the estimation scheme is also analyzed in some details.

Berihu Teklu; Stefano Olivares; Matteo G A Paris

2008-12-04T23:59:59.000Z

173

Looking at Transistor Gate Oxide Formation in Real Time  

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

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

174

Looking at Transistor Gate Oxide Formation in Real Time  

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

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

175

Optical Determination of Gate--Tunable Bandgap in Bilayer Graphene  

Science Conference Proceedings (OSTI)

The electronic bandgap is an intrinsic property of semiconductors and insulators that largely determines their transport and optical properties. As such, it has a central role in modern device physics and technology and governs the operation of semiconductor devices such as p-n junctions, transistors, photodiodes and lasers. A tunable bandgap would be highly desirable because it would allow great flexibility in design and optimization of such devices, in particular if it could be tuned by applying a variable external electric field. However, in conventional materials, the bandgap is fixed by their crystalline structure, preventing such bandgap control. Here we demonstrate the realization of a widely tunable electronic bandgap in electrically gated bilayer graphene. Using a dual-gate bilayer graphene field-effect transistor (FET) and infrared microspectroscopy, we demonstrate a gate-controlled, continuously tunable bandgap of up to 250 meV. Our technique avoids uncontrolled chemical doping and provides direct evidence of a widely tunable bandgap -- spanning a spectral range from zero to mid-infrared -- that has eluded previous attempts. Combined with the remarkable electrical transport properties of such systems, this electrostatic bandgap control suggests novel nanoelectronic and nanophotonic device applications based on graphene.

Zhang, Yuanbo; Tang, Tsung-Ta; Girit, Caglar; Hao, Zhao; Martin, Michael C.; Zettl, Alex; Crommie, Michael F.; Shen, Y. Ron; Wang, Feng

2009-08-11T23:59:59.000Z

176

GATE Center for Automotive Fuel Cell Systems at Virginia Tech  

SciTech Connect

The Virginia Tech GATE Center for Automotive Fuel Cell Systems (CAFCS) achieved the following objectives in support of the domestic automotive industry: ? Expanded and updated fuel cell and vehicle technologies education programs; ? Conducted industry directed research in three thrust areas ?? development and characterization of materials for PEM fuel cells; performance and durability modeling for PEM fuel cells; and fuel cell systems design and optimization, including hybrid and plug-in hybrid fuel cell vehicles; ? Developed MS and Ph.D. engineers and scientists who are pursuing careers related to fuel cells and automotive applications; ? Published research results that provide industry with new knowledge which contributes to the advancement of fuel cell and vehicle systems commercialization. With support from the Dept. of Energy, the CAFCS upgraded existing graduate course offerings; introduced a hands-on laboratory component that make use of Virginia Tech??s comprehensive laboratory facilities, funded 15 GATE Fellowships over a five year period; and expanded our program of industry interaction to improve student awareness of challenges and opportunities in the automotive industry. GATE Center graduate students have a state-of-the-art research experience preparing them for a career to contribute to the advancement fuel cell and vehicle technologies.

Nelson, Douglas

2011-05-31T23:59:59.000Z

177

Implementation of dynamically corrected gates for single-spin qubits  

E-Print Network (OSTI)

Precise control of an open quantum system is critical to quantum information processing, but is challenging due to inevitable interactions between the quantum system and the environment. We demonstrated experimentally at room temperature a type of dynamically corrected gates on the nitrogen-vacancy centers in diamond. The infidelity of quantum gates caused by environment nuclear spin bath is reduced from being the second-order to the sixth-order of the noise to control field ratio, which offers greater efficiency in reducing the infidelity by reducing the noise level. The decay time of the coherent oscillation driven by dynamically corrected gates is shown to be two orders of magnitude longer than the dephasing time, and is essentially limited by spin-lattice relaxation. The infidelity of DCG, which is actually constrained by the decay time, reaches $4\\times 10^{-3}$ at room temperature and is further reducible by 2-3 orders of magnitudes via lowering temperature. The greatly reduced noise dependence of infidelity and the uttermost extension of the coherent time mark an important step towards fault-tolerant quantum computation in realistic systems.

Xing Rong; Jianpei Geng; Zixiang Wang; Qi Zhang; Chenyong Ju; Fazhan Shi; Chang-Kui Duan; Jiangfeng Du

2013-09-21T23:59:59.000Z

178

Looking at Transistor Gate Oxide Formation in Real Time  

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

Looking at Transistor Gate Oxide Formation in Real Time Print Looking at Transistor Gate Oxide Formation in Real Time Print The oxide gate layer is critical to every transistor, and present-day layer thicknesses are in the 10-20 Å range (1-2 nm). However, little information exists on the oxidation process at this thickness. Available results are either for thicker layers grown under high-pressure conditions or for only the first couple of monolayers studied under high-vacuum conditions. Now, for the first time, a group of researchers has obtained real-time oxidation results for this elusive range. Using the ambient-pressure x-ray photoelectron spectroscopy (APXPS) endstation at ALS Beamline 9.3.2, they examined oxidation of Si(100) at pressures up to 1 torr and temperatures up to 450 ºC. The Si 2p chemical shifts allowed determination of oxide thickness as a function of time with a precision of 1-2 Å. The initial oxidation rate was very high (up to ~234 Å/h). Then, after an initial oxide thickness of 6-22 Å was formed, the rate decreased markedly (~1.5-4.0Å/h). Neither rate regime can be explained by the standard Deal-Grove (D-G) model for Si oxidation. These results are a significant step toward developing a better understanding of this critical thickness regime.

179

Geometric phase gate on an optical transition for ion trap quantum computation  

E-Print Network (OSTI)

We propose a geometric phase gate of two ion qubits that are encoded in two levels linked by an optical dipole-forbidden transition. Compared to hyperfine geometric phase gates mediated by electric dipole transitions, the gate has many interesting properties, such as very low spontaneous emission rates, applicability to magnetic field insensitive states, and use of a co-propagating laser beam geometry. We estimate that current technology allows for infidelities of around 10$^{-4}$.

Kim, K; Aolita, L; Hffner, H; Nebendahl, V; Blatt, R

2007-01-01T23:59:59.000Z

180

Geometric phase gate on an optical transition for ion trap quantum computation  

E-Print Network (OSTI)

We propose a geometric phase gate of two ion qubits that are encoded in two levels linked by an optical dipole-forbidden transition. Compared to hyperfine geometric phase gates mediated by electric dipole transitions, the gate has many interesting properties, such as very low spontaneous emission rates, applicability to magnetic field insensitive states, and use of a co-propagating laser beam geometry. We estimate that current technology allows for infidelities of around 10$^{-4}$.

K. Kim; C. F. Roos; L. Aolita; H. Haeffner; V. Nebendahl; R. Blatt

2007-10-21T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Tide gate sensor network as a forensic tool: establishing facts during superstorm sandy  

Science Conference Proceedings (OSTI)

This study presents a Sensor Network based Tide Gate Monitoring System (SensorTGMS) that automatically collects the real-time water levels at tide gates in the New Jersey Meadowlands District where ninety percent of which lies within two feet of the ... Keywords: emergency management, flood alerts, forensic analysis, hurricane, hurricane damages, sensor network, superstorm sandy, tide gate monitoring system, water level, water quality

Soon Ae Chun; Francisco Artigas

2013-06-01T23:59:59.000Z

182

Evaluation of the geometric accuracy of surrogate-based gated VMAT using intrafraction kilovoltage x-ray images  

SciTech Connect

Purpose: To evaluate the geometric accuracy of beam targeting in external surrogate-based gated volumetric modulated arc therapy (VMAT) using kilovoltage (kV) x-ray images acquired during dose delivery. Methods: Gated VMAT treatments were delivered using a Varian TrueBeam STx Linac for both physical phantoms and patients. Multiple gold fiducial markers were implanted near the target. The reference position was created for each implanted marker, representing its correct position at the gating threshold. The gating signal was generated from the RPM system. During the treatment, kV images were acquired immediately before MV beam-on at every breathing cycle, using the on-board imaging system. All implanted markers were detected and their 3D positions were estimated using in-house developed software. The positioning error of a marker is defined as the distance of the marker from its reference position for each frame of the images. The overall error of the system is defined as the average over all markers. For the phantom study, both sinusoidal motion (1D and 3D) and real human respiratory motion was simulated for the target and surrogate. In the baseline case, the two motions were synchronized for the first treatment fraction. To assess the effects of surrogate-target correlation on the geometric accuracy, a phase shift of 5% and 10% between the two motions was introduced. For the patient study, intrafraction kV images of five stereotactic body radiotherapy (SBRT) patients were acquired for one or two fractions. Results: For the phantom study, a high geometric accuracy was achieved in the baseline case (average error: 0.8 mm in the superior-inferior or SI direction). However, the treatment delivery is prone to geometric errors if changes in the target-surrogate relation occur during the treatment: the average error was increased to 2.3 and 4.7 mm for the phase shift of 5% and 10%, respectively. Results obtained with real human respiratory curves show a similar trend. For a target with 3D motion, the technique is able to detect geometric errors in the left-right (LR) and anterior-posterior (AP) directions. For the patient study, the average intrafraction positioning errors are 0.8, 0.9, and 1.4 mm and 95th percentile errors are 1.7, 2.1, and 2.7 mm in the LR, AP, and SI directions, respectively. Conclusions: The correlation between external surrogate and internal target motion is crucial to ensure the geometric accuracy of surrogate-based gating. Real-time guidance based on kV x-ray images overcomes the potential issues in surrogate-based gating and can achieve accurate beam targeting in gated VMAT.

Li Ruijiang; Mok, Edward; Han, Bin; Koong, Albert; Xing Lei [Department of Radiation Oncology, Stanford University, Stanford, California 94305-5847 (United States)

2012-05-15T23:59:59.000Z

183

Structural Insights into Ion Selectivity and Calcium Blockage in Cyclic Nucleotide Gated Channels.  

E-Print Network (OSTI)

??Cyclic nucleotides-gated (CNG) channels play an essential role in the visual and olfactory sensory systems and are ubiquitously expressed in a variety of neuronal and (more)

[No author

2010-01-01T23:59:59.000Z

184

Day Two of 2012 ARPA-E Summit Will Feature Bill Gates, Secretary...  

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

- Bart Gordon, K&L Gates, Partner; Former Representative from Tennessee Stefan Heck, McKinsey & Co., Director, Leader of Global Cleantech Practice Carrie Houtman, The Dow Chemical...

185

U-9: Implementation of Parylene as a Low- ? Gate Dielectric Material ...  

Science Conference Proceedings (OSTI)

For a top gated FET, the graphene-dielectric interface play an important role in the FET behavior and mobility degradation mainly due to carrier scattering after...

186

Gate-turn-off thyristors provide new level of power-flow control  

SciTech Connect

The availability of high-power, gate-turn-off (GTO) thyristors has made possible the development of a new class of solid-state devices that promise an unprecedented degree of control over the flow of power in the nation`s network. The first of these, a static compensator known as Statcom, which offers dynamic control over the flow of VArs into, or out of, the network, was unveiled last month at the Tennessee Valley Authority`s (TVA) Sullivan substation in eastern Tennessee. The principal element of the Statcom is a voltage-sourced inverter that converts dc voltage at its input terminals into a 3-phase alternating output voltage. To eliminate the quasi square wave that a single inverter would generate - along with unacceptable harmonics - the Statcom uses many such inverters, appropriately phase-shifted, and combines their outputs through electromagnetic linkages to produce a nearly sinusoidal output waveform. By numerous voltage additions and subtractions, eight inverters used in the Statcom generate a 48-pulse, nearly sinusoidal output waveform. The GTO-based inverters and electronic feedback control give the Statcom a dynamic performance far exceeding that of other reactive power compensators. In fact, the device can transition from full rated capacitive to full-rated VArs in approximately one-quarter cycle. Nominal rating of each inverter is 12.5 MVA. 12 figs.

NONE

1995-12-01T23:59:59.000Z

187

GENERATING CAPACITY  

E-Print Network (OSTI)

Evidence from the U.S. and some other countries indicates that organized wholesale markets for electrical energy and operating reserves do not provide adequate incentives to stimulate the proper quantity or mix of generating capacity consistent with mandatory reliability criteria. A large part of the problem can be associated with the failure of wholesale spot market prices for energy and operating reserves to rise to high enough levels during periods when generating capacity is fully utilized. Reforms to wholesale energy markets, the introduction of well-design forward capacity markets, and symmetrical treatment of demand response and generating capacity resources to respond to market and institutional imperfections are discussed. This policy reform program is compatible with improving the efficiency of spot wholesale electricity markets, the continued evolution of competitive retail markets, and restores incentives for efficient investment in generating capacity consistent with operating reliability criteria applied by system operators. It also responds to investment disincentives that have been associated with volatility in wholesale energy prices, limited hedging opportunities and to concerns about regulatory opportunism. 1

Paul L. Joskow; Paul L. Joskow; Paul L. Joskow

2006-01-01T23:59:59.000Z

188

Workshop on gate valve pressure locking and thermal binding  

SciTech Connect

The purpose of the Workshop on Gate Valve Pressure Locking and Thermal Binding was to discuss pressure locking and thermal binding issues that could lead to inoperable gate valves in both boiling water and pressurized water reactors. The goal was to foster exchange of information to develop the technical bases to understand the phenomena, identify the components that are susceptible, discuss actual events, discuss the safety significance, and illustrate known corrective actions that can prevent or limit the occurrence of pressure locking or thermal binding. The presentations were structured to cover U.S. Nuclear Regulatory Commission staff evaluation of operating experience and planned regulatory activity; industry discussions of specific events, including foreign experience, and efforts to determine causes and alleviate the affects; and valve vendor experience and recommended corrective action. The discussions indicated that identifying valves susceptible to pressure locking and thermal binding was a complex process involving knowledge of components, systems, and plant operations. The corrective action options are varied and straightforward.

Brown, E.J.

1995-07-01T23:59:59.000Z

189

GATE Air-Sea Interactions II: Numerical-Model Calculation of Regional Sea-Surface Temperature Fields Using the GATE Version III Gridded Global Data Set  

Science Conference Proceedings (OSTI)

The numerical model of air-sea interaction previously described in Brown et al. (1982), Pandolfo and Jacobs (1972) and Pandolfo (1969) is applied over a limited horizontal portion of the GATE III Gridded Global Data set (including continental ...

P. S. Brown Jr.; J. P. Pandolfo; G. D. Robinson

1982-10-01T23:59:59.000Z

190

Fault diagnosis in reversible circuits under missing-gate fault model  

Science Conference Proceedings (OSTI)

This article presents a novel technique for fault detection as well as fault location in a reversible combinational circuit under the missing gate fault model. It is shown that in an (nxn) reversible circuit implemented with k-CNOT gates, addition of ...

Hafizur Rahaman; Dipak K. Kole; Debesh K. Das; Bhargab B. Bhattacharya

2011-07-01T23:59:59.000Z

191

Event-driven gate-level simulation with GP-GPUs  

Science Conference Proceedings (OSTI)

Logic simulation is a critical component of the design tool flow in modern hardware development efforts. It is used widely -- from high-level descriptions down to gate-level ones -- to validate several aspects of the design, particularly functional correctness. ... Keywords: gate-level simulation, general purpose graphics processing unit (GP-GPU), high-performance simulation

Debapriya Chatterjee; Andrew DeOrio; Valeria Bertacco

2009-07-01T23:59:59.000Z

192

Cumulonimbus Vertical Velocity Events in GATE. Part I: Diameter, Intensity and Mass Flux  

Science Conference Proceedings (OSTI)

This is the first part of a two-part paper defining the nature of the vertical air motion in and around GATE cumulonimbus clouds. The statistics are from a total of 104 km of flight legs, flown on six days in GATE, at altitudes from near the ...

Margaret A. LeMone; Edward J. Zipser

1980-11-01T23:59:59.000Z

193

Multi-Input Floating Gate Differential Amplifier and Application to Intelligent Sensors  

Science Conference Proceedings (OSTI)

Multi-input floating gate differential amplifier (FGDA) is proposed which can perform any convolution operation with differential structure and feedback loop. All operations are in the voltage mode. Only one terminal is required for the negative feedback ... Keywords: DCT, floating gate, image compression, image sensor, signal processing

Takeyasu Sakai; Hiromasa Nagai; Takashi Matsumoto

2000-12-01T23:59:59.000Z

194

Bias temperature instability from gate charge characteristics investigations in N-Channel Power MOSFET  

Science Conference Proceedings (OSTI)

This paper reports the effects of bias temperature stress (positive and negative bias temperature instabilites, PBTI-NBTI) on threshold voltage, input capacitance and Miller capacitance of N-Channel Power MOSFET. The device is stressed with gate voltage ... Keywords: Gate charge, NBTI, PBTI, Power MOSFET, Thermal cycling, Thermal stress

M. Alwan; B. Beydoun; K. Ketata; M. Zoaeter

2007-06-01T23:59:59.000Z

195

Work function control at metal high-dielectric-constant gate oxide interfaces  

Science Conference Proceedings (OSTI)

There has been difficulty in finding metals of sufficiently large or small effective work function to act as metal electrodes on high-dielectric-constant gate oxides. To understand the factors affecting the effective work function, we have calculated ... Keywords: High K oxides, Metal gates

K. Tse; J. Robertson

2008-01-01T23:59:59.000Z

196

Dual-K Versus Dual-T Technique for Gate Leakage Reduction: A Comparative Perspective  

Science Conference Proceedings (OSTI)

As a result of aggressive technology scaling, gate leakage (gate oxide direct tunneling) has become a major component of total power dissipation. Use of dielectrics of higher permittivity (Dual-K) or use of silicon dioxide of higher thicknesses (Dual-T ...

Saraju P. Mohanty; Ramakrishna Velagapudi; Elias Kougianos

2006-03-01T23:59:59.000Z

197

Fiber-Optic Stethoscope: A Cardiac Monitoring and Gating System for Magnetic Resonance Microscopy  

E-Print Network (OSTI)

Fiber-Optic Stethoscope: A Cardiac Monitoring and Gating System for Magnetic Resonance Microscopy monitoring and gating purposes. The fiber-optic stethoscope system offers a novel approach to measuring) small enough for use on rats and mice. METHODS Fiber-Optic Stethoscope System Design As shown in the MR

198

Gate capacitance modeling and width-dependent performance of graphene nanoribbon transistors  

Science Conference Proceedings (OSTI)

The width-dependent performance of armchair GNRs-FETs is investigated by developing a fully analytical gate capacitance model based on effective mass approximation and semiclassical ballistic transport. The model incorporates the effects of edge bond ... Keywords: Analytic ballistic model, Gate capacitance, Graphene FETs, Graphene nanoribbons, Performance metrics

George S. Kliros

2013-12-01T23:59:59.000Z

199

3D modelling of an important symbol of the orthodox wooden churches: the imperial gates  

Science Conference Proceedings (OSTI)

The paper presents an on-going process to digitally reconstruct the Imperial Gates of the old Romanian orthodox churches scattered on a large geographical area in Transylvania. Due to the locations of the churches and to the indestructible character ... Keywords: 3d scanning, cultural heritage, imperial gates, orthodox wooden churches

Radu Moraru; Oana Gui; Ioan Chirila

2011-07-01T23:59:59.000Z

200

Energy-Delay Tradeoffs in Combinational Logic using Gate Sizing and Supply Voltage Optimization  

E-Print Network (OSTI)

Energy-Delay Tradeoffs in Combinational Logic using Gate Sizing and Supply Voltage Optimization savings to the energy profile of a circuit. These savings are obtained by using gate sizing and supply of energy to delay is derived from a linear delay model extended to multiple supplies. The optimizations

Nikolic, Borivoje

Note: This page contains sample records for the topic "dave gates generating" 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

A satisfiability algorithm for constant depth boolean circuits with unbounded fan-in gates  

E-Print Network (OSTI)

Boolean Circuits with Unbounded Fan-In Gates A dissertationAC 0 by allowing unbounded fan-in M OD m 1 , . . . , M OD mSince each gate in ? has fan-in at most k and ? has depth D

Matthews, William Grant

2011-01-01T23:59:59.000Z

202

Integration of Gd silicate/TiN gate stacks into SOI n-MOSFETs  

Science Conference Proceedings (OSTI)

In this work we describe the gate first integration of gadolinium silicate (GdSiO) high-k dielectrics and metal gate electrodes into SOI n-MOSFETs. Fully functional devices are achieved and compared to reference devices with standard SiO"2. Analysis ... Keywords: Gadolinium silicate, High temperature stable high-k dielectric, SOI n-MOSFET with high-k

M. Schmidt; A. Stefani; H. D. B. Gottlob; H. Kurz

2009-07-01T23:59:59.000Z

203

Magnetocumulative generator  

DOE Patents (OSTI)

An improved magnetocumulative generator is described that is useful for producing magnetic fields of very high energy content over large spatial volumes. The polar directed pleated magnetocumulative generator has a housing providing a housing chamber with an electrically conducting surface. The chamber forms a coaxial system having a small radius portion and a large radius portion. When a magnetic field is injected into the chamber, from an external source, most of the magnetic flux associated therewith positions itself in the small radius portion. The propagation of an explosive detonation through high-explosive layers disposed adjacent to the housing causes a phased closure of the chamber which sweeps most of the magnetic flux into the large radius portion of the coaxial system. The energy content of the magnetic field is greatly increased by flux stretching as well as by flux compression. The energy enhanced magnetic field is utilized within the housing chamber itself.

Pettibone, J.S.; Wheeler, P.C.

1981-06-08T23:59:59.000Z

204

PLASMA GENERATOR  

DOE Patents (OSTI)

This patent describes apparatus for producing an electricity neutral ionized gas discharge, termed a plasma, substantially free from contamination with neutral gas particles. The plasma generator of the present invention comprises a plasma chamber wherein gas introduced into the chamber is ionized by a radiofrequency source. A magnetic field is used to focus the plasma in line with an exit. This magnetic field cooperates with a differential pressure created across the exit to draw a uniform and uncontaminated plasma from the plasma chamber.

Foster, J.S. Jr.

1958-03-11T23:59:59.000Z

205

Thermoelectric generator  

DOE Patents (OSTI)

A thermoelectric generator having a rigid coupling or stack'' between the heat source and the hot strap joining the thermoelements is described. The stack includes a member of an insulating material, such as ceramic, for electrically isolating the thermoelements from the heat source, and a pair of members of a ductile material, such as gold, one each on each side of the insulating member, to absorb thermal differential expansion stresses in the stack. (Official Gazette)

Pryslak, N.E.

1974-02-26T23:59:59.000Z

206

Photon generator  

DOE Patents (OSTI)

A photon generator includes an electron gun for emitting an electron beam, a laser for emitting a laser beam, and an interaction ring wherein the laser beam repetitively collides with the electron beam for emitting a high energy photon beam therefrom in the exemplary form of x-rays. The interaction ring is a closed loop, sized and configured for circulating the electron beam with a period substantially equal to the period of the laser beam pulses for effecting repetitive collisions.

Srinivasan-Rao, Triveni (Shoreham, NY)

2002-01-01T23:59:59.000Z

207

Cluster generator  

DOE Patents (OSTI)

Described herein is an apparatus and a method for producing atom clusters based on a gas discharge within a hollow cathode. The hollow cathode includes one or more walls. The one or more walls define a sputtering chamber within the hollow cathode and include a material to be sputtered. A hollow anode is positioned at an end of the sputtering chamber, and atom clusters are formed when a gas discharge is generated between the hollow anode and the hollow cathode.

Donchev, Todor I. (Urbana, IL); Petrov, Ivan G. (Champaign, IL)

2011-05-31T23:59:59.000Z

208

PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational Health  

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

MedGate Occupational MedGate Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) PIA - Savannah River Nuclear Solution (SRNS) MedGate Occupational Health and Safety Medical System (OHS) (Includes the Drug and Alcohol Testing System (Assistant)) More Documents & Publications PIA - Savannah River Nuclear Solution (SRNS) Procurement Cycle System (PCS) PIA - Savannah River Nuclear Solutions (SRNS) Human Resource Management

209

Hardware generation of arbitrary random number distributions from uniform distributions via the inversion method  

Science Conference Proceedings (OSTI)

We present an automated methodology for producing hardware-based random number generator (RNG) designs for arbitrary distributions using the inverse cumulative distribution function (ICDF). The ICDF is evaluated via piecewise polynomial approximation ... Keywords: Chebyshev approximation and theory, algorithms implemented in hardware, automatic synthesis, computer arithmetic, elementary function approximation, error analysis, gate arrays, piecewise polynomial approximation

Ray C. C. Cheung; Dong-U Lee; Wayne Luk; John D. Villasenor

2007-08-01T23:59:59.000Z

210

HEAT GENERATION  

DOE Patents (OSTI)

Heat is generated by the utilization of high energy neutrons produced as by nuclear reactions between hydrogen isotopes in a blanket zone containing lithium, a neutron moderator, and uranium and/or thorium effective to achieve multtplicatton of the high energy neutron. The rnultiplied and moderated neutrons produced react further with lithium-6 to produce tritium in the blanket. Thermal neutron fissionable materials are also produced and consumed in situ in the blanket zone. The heat produced by the aggregate of the various nuclear reactions is then withdrawn from the blanket zone to be used or otherwise disposed externally. (AEC)

Imhoff, D.H.; Harker, W.H.

1963-12-01T23:59:59.000Z

211

Gas-controlled dynamic vacuum insulation with gas gate  

DOE Patents (OSTI)

Disclosed is a dynamic vacuum insulation comprising sidewalls enclosing an evacuated chamber and gas control means for releasing hydrogen gas into a chamber to increase gas molecule conduction of heat across the chamber and retrieving hydrogen gas from the chamber. The gas control means includes a metal hydride that absorbs and retains hydrogen gas at cooler temperatures and releases hydrogen gas at hotter temperatures; a hydride heating means for selectively heating the metal hydride to temperatures high enough to release hydrogen gas from the metal hydride; and gate means positioned between the metal hydride and the chamber for selectively allowing hydrogen to flow or not to flow between said metal hydride and said chamber. 25 figs.

Benson, D.K.; Potter, T.F.

1994-06-07T23:59:59.000Z

212

Gas-controlled dynamic vacuum insulation with gas gate  

DOE Patents (OSTI)

Disclosed is a dynamic vacuum insulation comprising sidewalls enclosing an evacuated chamber and gas control means for releasing hydrogen gas into a chamber to increase gas molecule conduction of heat across the chamber and retrieving hydrogen gas from the chamber. The gas control means includes a metal hydride that absorbs and retains hydrogen gas at cooler temperatures and releases hydrogen gas at hotter temperatures; a hydride heating means for selectively heating the metal hydride to temperatures high enough to release hydrogen gas from the metal hydride; and gate means positioned between the metal hydride and the chamber for selectively allowing hydrogen to flow or not to flow between said metal hydride and said chamber.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1994-06-07T23:59:59.000Z

213

Magnetocumulative generator  

DOE Patents (OSTI)

An improved magnetocumulative generator is described that is useful for producing magnetic fields of very high energy content over large spatial volumes. The polar directed pleated magnetocumulative generator has a housing (100, 101, 102, 103, 104, 105) providing a housing chamber (106) with an electrically conducting surface. The chamber (106) forms a coaxial system having a small radius portion and a large radius portion. When a magnetic field is injected into the chamber (106), from an external source, most of the magnetic flux associated therewith positions itself in the small radius portion. The propagation of an explosive detonation through high-explosive layers (107, 108) disposed adjacent to the housing causes a phased closure of the chamber (106) which sweeps most of the magnetic flux into the large radius portion of the coaxial system. The energy content of the magnetic field is greatly increased by flux stretching as well as by flux compression. The energy enhanced magnetic field is utilized within the housing chamber itself.

Pettibone, Joseph S. (Livermore, CA); Wheeler, Paul C. (Livermore, CA)

1983-01-01T23:59:59.000Z

214

Biogass Generator  

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

Another internet tool by: Another internet tool by: Build Your Own Page 1 of 5 Teach...build...learn...renewable energy! Biogas Generator A Renewable Energy Project Kit The Pembina Institute What Is Biogas? Biogas is actually a mixture of gases, usually carbon dioxide and methane. It is produced by a few kinds of microorganisms, usually when air or oxygen is absent. (The absence of oxygen is called "anaerobic conditions.") Animals that eat a lot of plant material, particularly grazing animals such as cattle, produce large amounts of biogas. The biogas is produced not by the cow or elephant, but by billions of microor- ganisms living in its digestive system. Biogas also develops in bogs and at the bottom of lakes, where decaying organic matter builds up under wet and

215

Imperfect linear-optical photonic gates with number-resolving photodetection  

Science Conference Proceedings (OSTI)

We use the numerical optimization techniques of Uskov et al.[Phys. Rev. A 81, 012303 (2010)] to investigate the behavior of the success rates for Knill-Laflamme-Milburn-style [Knill et al., Nature (London) 409, 46 (2001)] two- and three-qubit entangling gates. The methods are first demonstrated at perfect fidelity and then extended to imperfect gates. We find that as the perfect fidelity condition is relaxed, the maximum attainable success rates increase in a predictable fashion depending on the size of the system, and we compare that rate of increase for several gates.

Smith, A. Matthew [Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118 (United States); Air Force Research Laboratory, Information Directorate, Rome, New York 13440 (United States); Uskov, D. B. [Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118 (United States); Department of Mathematics and Natural Sciences, Brescia University, Owensboro, Kentucky 42301 (United States); Ying, L. H.; Kaplan, L. [Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118 (United States)

2011-09-15T23:59:59.000Z

216

CNT-based gas ionizers with integrated MEMS gate for portable mass spectrometry applications  

E-Print Network (OSTI)

We report the fabrication and experimental characterization of a novel low-cost carbon nanotube (CNT)-based electron impact ionizer (EII) with integrated gate for portable mass spectrometry applications. The device achieves ...

Velasquez-Garcia, Luis Fernando

217

Diagnosis of Convective and Mesoscale Motions During Phase IH of Gate  

Science Conference Proceedings (OSTI)

Observational evidence from GATE suggests that a significant fraction of precipitation in tropical disturbances over the eastern Atlantic occurs beneath anvil-type mesoscale convective systems that are frequently associated with intense ...

Richard H. Johnson

1980-04-01T23:59:59.000Z

218

VIDEO: Bill Gates and Secretary Chu Chat on the Future of Energy |  

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

VIDEO: Bill Gates and Secretary Chu Chat on the Future of Energy VIDEO: Bill Gates and Secretary Chu Chat on the Future of Energy VIDEO: Bill Gates and Secretary Chu Chat on the Future of Energy March 5, 2012 - 1:24pm Addthis Secretary Chu sits down with Microsoft Founder and Chairman Bill Gates at the 2012 ARPA-E Energy Innovation Summit. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs Last week, attendees at the 2012 ARPA-E Energy Innovation Summit heard from a variety of leaders from across the research, business and government sectors who spoke at the conference of nearly 2,400. These speakers, along with the startup companies and innovators in attendance, converged outside of Washington, D.C., to offer their take on how America can tackle our energy challenges. One of the top-level highlights from the Summit included this fireside chat

219

The Moist Available Energy of a Conditionally Unstable Atmosphere. Part II: Further Analysis of GATE Data  

Science Conference Proceedings (OSTI)

The generalized convective available potential energy (GCAPE) observed during GATE has been analyzed using the Lagrangian algorithm of Lorenz, as modified by Randall and Wang. The effects of ice are included and are discussed in an Appendix. A ...

Junyi Wang; David A. Randall

1994-03-01T23:59:59.000Z

220

Low-power flip-flop using internal clock gating and adaptive body bias.  

E-Print Network (OSTI)

??This dissertation presents a new systematic approach to flip-flop design using Internal Clock Gating, (ICG), and Adaptive Body-Bias, (ABB), in order to reduce power consumption. (more)

Galvis, Jorge Alberto

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

An Analysis of Convective System on a 100-km Scale during GATE  

Science Conference Proceedings (OSTI)

Usig data on a 100 km-scale from Phase III of GATE, the kinematic and thermodynamic, properties of the mesoscale environment in which convective clouds of varying intensities exist are investigated. Classifications into disturbed and suppressed ...

R. P. Pearce; J. Bayo Omotosho

1986-08-01T23:59:59.000Z

222

A Compact Propagation Delay Model for Deep-Submicron CMOS Gates including Crosstalk  

Science Conference Proceedings (OSTI)

We present a compact, fully physical, analytical model for the propagation delay and the output transition time of deep-submicron CMOS gates. The model accounts for crosstalk effects, short-circuit currents, the input-output coupling capacitance and ...

J. L. Rossell; J. Segura

2004-02-01T23:59:59.000Z

223

Mesoscale Motion Fields Associated with a Slowly Moving GATE Convective Band  

Science Conference Proceedings (OSTI)

The structure of the convective band of 14 September in the dense GATE observing array is determined using wind and thermodynamic data primarily from multiple aircraft penetrations, which are well distributed in the vertical and in time.

Edward J. Zipser; Rebecca J. Meitn; Margaret A. LeMone

1981-08-01T23:59:59.000Z

224

Explicit Simulation of Cumulus Ensembles with the GATE Phase III Data: Comparison with Observations  

Science Conference Proceedings (OSTI)

The macroscopic behavior of cumulus convection and its mesoscale organization during Phase III of the Global Atmospheric Research Program's (GARP) Atlantic Tropical Experiment (GATE) is simulated with a two-dimensional (2D) cloud ensemble model. ...

Kuan-Man Xu; David A. Randall

1996-12-01T23:59:59.000Z

225

Single electron effects and structural effects in ultrascaled silicon nanocrystal floating-gate memories  

Science Conference Proceedings (OSTI)

In this paper, we present a nanometer-sized floating-gate memory device, fabricated on silicon-on-insulator substrate and using silicon nanocrystals as storage nodes. Single electron charging and discharging phenomena occurring at room temperature will ...

G. Molas; B. De Salvo; G. Ghibaudo; D. Mariolle; A. Toffoli; N. Buffet; R. Puglisi; S. Lombardo; S. Deleonibus

2004-03-01T23:59:59.000Z

226

Lessons learned in the design and erection of box girder bridges from the West Gate collapse  

E-Print Network (OSTI)

The West Gate Bridge, intended to span the Yarra River in Australia, collapsed during its third year of construction in 1970. Investigation into the project revealed numerous issues in the bridge's design and construction. ...

Burton, Alia Christine

2007-01-01T23:59:59.000Z

227

Electrical gating effects on the magnetic properties of (Ga,Mn)As diluted magnetic semiconductors  

E-Print Network (OSTI)

and Future Work . . . . . . . . . . . . . . . . . . . . . . . . 120 7.2.1 Voltage-pulse magnetization switching . . . . . . . . . . . . . 120 7.2.2 Electrolyte-gating . . . . . . . . . . . . . . . . . . . . . . . . . 121 A Fabrication steps 122 A.1 Processes...

Owen, Man Hon Samuel

2010-11-16T23:59:59.000Z

228

Further Analysis of the Composite Wind and Thermodynamic Structure of the 12 September GATE Squall Line  

Science Conference Proceedings (OSTI)

An objective analysis technique is applied to the time-composite wind and thermodynamic fields of the 12 September GATE tropical squall line. Previous subjective analyses described by Gamache and Houze are confirmed and several new results are ...

John F. Gamache; Robert A. Houze Jr.

1985-08-01T23:59:59.000Z

229

Lifetime of high-k gate dielectrics and analogy with strength of quasibrittle structures  

E-Print Network (OSTI)

The two-parameter Weibull distribution has been widely adopted to model the lifetime statistics of dielectric breakdown under constant voltage, but recent lifetime testing for high-k gate dielectrics has revealed a systematic ...

Le, Jia-Liang

230

All-optical logic gates based on vertical cavity semiconductor optical amplifiers  

E-Print Network (OSTI)

AND FIGURES Tables: Table 2.2.1: Truth Table for NOR-Gate SR13 Table 2.5.1: Truth Table for VCSOA SR Flip-Truth Table ..

Gauss, Veronica Andrea

2009-01-01T23:59:59.000Z

231

P1-15: Gating System Optimisation Design Study of a Cast ...  

Science Conference Proceedings (OSTI)

Different designs of the gating and risering systems for the cast automobile ... P1- 04: 3D Microstructural Characterization of Uranium Oxide as a Surrogate Nuclear ... P2-27: Characterization of Carbonate Rocks through X-ray Microtomography.

232

Multimodal Properties of the Surface-Wave Field Observed with Pitch-Roll Buoys During GATE  

Science Conference Proceedings (OSTI)

A sophisticated analysis technique is applied to a subset of pitch-roll buoy data collected by the research vessels Gilliss and Quadra during the GARP Tropical Atlantic Experiment (GATE) in September 1974. The procedure enables the examination of ...

Linda Marie Lawson; Robert Bryan Long

1983-03-01T23:59:59.000Z

233

A Systematic Search for Trapped Equatorial Waves in the GATE Velocity Data  

Science Conference Proceedings (OSTI)

Moored current meter data taken over a 60-day period during GATE (GARP Atlantic Tropical Experiment) near the equator at 28W, have been systematically searched for vertically propagating equatorially trapped waves. Three independent tests ...

A. M. Horigan; R. H. Weisberg

1981-04-01T23:59:59.000Z

234

The robustness of magic state distillation against errors in Clifford gates  

E-Print Network (OSTI)

Quantum error correction and fault-tolerance have provided the possibility for large scale quantum computations without a detrimental loss of quantum information. A very natural class of gates for fault-tolerant quantum computation is the Clifford gate set and as such their usefulness for universal quantum computation is of great interest. Clifford group gates augmented by magic state preparation give the possibility of simulating universal quantum computation. However, experimentally one cannot expect to perfectly prepare magic states. Nonetheless, it has been shown that by repeatedly applying operations from the Clifford group and measurements in the Pauli basis, the fidelity of noisy prepared magic states can be increased arbitrarily close to a pure magic state [1]. We investigate the robustness of magic state distillation to perturbations of the initial states to arbitrary locations in the Bloch sphere due to noise. Additionally, we consider a depolarizing noise model on the quantum gates in the decoding ...

Jochym-O'Connor, Tomas; Helou, Bassam; Laflamme, Raymond

2012-01-01T23:59:59.000Z

235

Association of State Dam Safety Officials (ASDSO)/EPRI Spillway Gate Workshop: January 5 & 6, 2000  

Science Conference Proceedings (OSTI)

Maintaining the integrity of dams at hydroelectric projects is essential to the protection of communities, the surrounding environment, and the power and resource management infrastructure. The Spillway Gate Workshop, sponsored by the Association of State Dam Safety Officials (ASDSO) and EPRI, and with funding from the Federal Emergency Management Agency (FEMA), focused on a critical aspect of the safety issues related to analysis, inspection, maintenance, and performance of spillway gates. The intent of...

2000-06-16T23:59:59.000Z

236

Carrier transport mechanism in La-incorporated high-k dielectric/metal gate stack MOSFETs  

Science Conference Proceedings (OSTI)

In this paper, carrier transport mechanism of MOSFETs with HfLaSiON was analyzed. It was shown that gate current is consisted of Schottky emission, Frenkel-Poole (F-P) emission and Fowler-Nordheim (F-N) tunneling components. Schottky barrier height is ... Keywords: Fowler-Nordheim (F-N) tunneling, Frenkel-Poole (F-P) emission, Gate current, HfLaSiON, High-k, Schottky emission, Trap energy level, Trap-assisted tunneling (TAT)

Hyuk-Min Kwon; Won-Ho Choi; In-Shik Han; Min-Ki Na; Sang-Uk Park; Jung-Deuk Bok; Chang-Yong Kang; Byoung-Hun Lee; Raj Jammy; Hi-Deok Lee

2011-12-01T23:59:59.000Z

237

DOE Announces Up to $5 Million to Support the Next Generation of Advanced  

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

Up to $5 Million to Support the Next Generation of Up to $5 Million to Support the Next Generation of Advanced Automotive Designers and Engineers DOE Announces Up to $5 Million to Support the Next Generation of Advanced Automotive Designers and Engineers February 16, 2011 - 12:00am Addthis WASHINGTON, DC - Energy Secretary Steven Chu today announced up to $5 million in funding to support Graduate Automotive Technology Education (GATE) Centers of Excellence. The GATE Centers will focus on educating a future workforce of automotive engineering professionals who will gain experience in developing and commercializing advanced automotive technologies. Today's announcement supports the Administration's goal of increasing American economic competitiveness by focusing on science, technology, engineering, and math (STEM) education to support job growth

238

Success rates for linear optical generation of cluster states in coincidence basis  

E-Print Network (OSTI)

We report on theoretical research in photonic cluster-state computing. Finding optimal schemes of generating non-classical photonic states is of critical importance for this field as physically implementable photon-photon entangling operations are currently limited to measurement-assisted stochastic transformations. A critical parameter for assessing the efficiency of such transformations is the success probability of a desired measurement outcome. At present there are several experimental groups which are capable of generating multi-photon cluster states carrying more than eight qubits. Separate photonic qubits or small clusters can be fused into a single cluster state by a probabilistic optical CZ gate conditioned on simultaneous detection of all photons with 1/9 success probability of each gate. This design mechanically follows the original theoretical scheme of cluster state generation proposed more than a decade ago by Raussendorf, Browne and Briegel. The optimality of the destructive CZ gate in application to linear optical cluster state generation has not been analyzed previously. Our results reveal that this method is far from the optimal one. Employing numerical optimization we have identified that maximal success probability of fusing n unentangled dual-rail optical qubits into a linear cluster state is equal to 1/2^(n-1); m-tuple of photonic Bell pair states, commonly generated via spontaneous parametric down-conversion, can be fused into a single cluster with the maximal success probability of 1/4^(m-1).

D. B. Uskov; P. M. Alsing; M. L. Fanto; L. Kaplan; A. M. Smith

2013-06-18T23:59:59.000Z

239

Fast fall-time ion beam in neutron generators  

Science Conference Proceedings (OSTI)

Ion beam with a fast fall time is useful in building neutron generators for the application of detecting hidden, gamma-shielded SNM using differential die-away (DDA) technique. Typically a fall time of less than 1 {micro}s can't be achieved by just turning off the power to the ion source due to the slow decay of plasma density (partly determined by the fall time of the RF power in the circuit). In this paper, we discuss the method of using an array of mini-apertures (instead of one large aperture beam) such that gating the beamlets can be done with low voltage and a small gap. This geometry minimizes the problem of voltage breakdown as well as reducing the time of flight to produce fast gating. We have designed and fabricated an array of 16 apertures (4 x 4) for a beam extraction experiment. Using a gating voltage of 1400 V and a gap distance of 1 mm, the fall time of extracted ion beam pulses is less than 1 {micro}s at various beam energies ranging between 400 eV to 800 eV. Usually merging an array of beamlets suffers the loss of beam brightness, i.e., emittance growth, but that is not an important issue for neutron source applications.

Ji, Q.; Kwan, J.; Regis, M.; Wu, Y.; Wilde, S.B.; Wallig, J.

2008-08-10T23:59:59.000Z

240

Scanning transmission electron microscopy of gate stacks with HfO2 dielectrics and TiN electrodes  

E-Print Network (OSTI)

Scanning transmission electron microscopy of gate stacksEELS) in scanning transmission electron microscopy were usedWe use scanning transmission electron microscopy (STEM)

Agustin, Melody P.; Fonseca, Leo R. C.; Hooker, Jacob C.; Stemmer, Susanne

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Demonstration of an all-optical quantum controlled-NOT gate  

E-Print Network (OSTI)

The promise of tremendous computational power, coupled with the development of robust error-correcting schemes, has fuelled extensive efforts to build a quantum computer. The requirements for realizing such a device are confounding: scalable quantum bits (two-level quantum systems, or qubits) that can be well isolated from the environment, but also initialized, measured and made to undergo controllable interactions to implement a universal set of quantum logic gates. The usual set consists of single qubit rotations and a controlled-NOT (CNOT) gate, which flips the state of a target qubit conditional on the control qubit being in the state 1. Here we report an unambiguous experimental demonstration and comprehensive characterization of quantum CNOT operation in an optical system. We produce all four entangled Bell states as a function of only the input qubits' logical values, for a single operating condition of the gate. The gate is probabilistic (the qubits are destroyed upon failure), but with the addition of linear optical quantum non-demolition measurements, it is equivalent to the CNOT gate required for scalable all-optical quantum computation.

J L O'Brien; G J Pryde; A G White; T C Ralph; D Branning

2004-03-08T23:59:59.000Z

242

Eye tracking and gating system for proton therapy of orbital tumors  

Science Conference Proceedings (OSTI)

Purpose: A new motion-based gated proton therapy for the treatment of orbital tumors using real-time eye-tracking system was designed and evaluated. Methods: We developed our system by image-pattern matching, using a normalized cross-correlation technique with LabVIEW 8.6 and Vision Assistant 8.6 (National Instruments, Austin, TX). To measure the pixel spacing of an image consistently, four different calibration modes such as the point-detection, the edge-detection, the line-measurement, and the manual measurement mode were suggested and used. After these methods were applied to proton therapy, gating was performed, and radiation dose distributions were evaluated. Results: Moving phantom verification measurements resulted in errors of less than 0.1 mm for given ranges of translation. Dosimetric evaluation of the beam-gating system versus nongated treatment delivery with a moving phantom shows that while there was only 0.83 mm growth in lateral penumbra for gated radiotherapy, there was 4.95 mm growth in lateral penumbra in case of nongated exposure. The analysis from clinical results suggests that the average of eye movements depends distinctively on each patient by showing 0.44 mm, 0.45 mm, and 0.86 mm for three patients, respectively. Conclusions: The developed automatic eye-tracking based beam-gating system enabled us to perform high-precision proton radiotherapy of orbital tumors.

Shin, Dongho; Yoo, Seung Hoon; Moon, Sung Ho; Yoon, Myonggeun; Lee, Se Byeong; Park, Sung Yong [Proton Therapy Center, National Cancer Center, Goyang, Gyeonggi 410-769 (Korea, Republic of); Department of Radiation Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Gyeonggi 463-712 (Korea, Republic of); Proton Therapy Center, National Cancer Center, Goyang, Gyeonggi 410-769 (Korea, Republic of); Department of Radiological Science, Korea University, Seoul 136-703 (Korea, Republic of); Proton Therapy Center, National Cancer Center, Goyang, Gyeonggi 410-769 (Korea, Republic of); Proton Therapy Center, McLaren Cancer Institute, Flint, Michigan 48532 (United States)

2012-07-15T23:59:59.000Z

243

Water gate array for current flow or tidal movement pneumatic harnessing system  

DOE Patents (OSTI)

The invention, which provides a system for harnessing power from current flow or tidal movement in a body of water, comprises first and second hydro-pneumatic chambers each having ingress and egress below the water surface near the river or ocean floor and water gates operative to open or seal the ports to the passage of water. In an exemplary embodiment, the gates are sychronized by shafts so that the ingress ports of each chamber are connected to the egress ports of each other chamber. Thus, one set of gates is closed, while the other is open, thereby allowing water to flow into one chamber and build air pressure therein and allowing water to flow out of the other chamber and create a partial vacuum therein. A pipe connects the chambers, and an air turbine harnesses the air movement within the pipe. When water levels are equilibrated, the open set of gates is closed by a counterweight, and the other set is allowed to open by natural force of the water differential. The water gates may be comprised of a plurality of louvers which are ganged for simultaneous opening and closing. The system is designed to operate with air turbines or other pneumatic devices. Its design minimizes construction cost and environmental impact, yet provides a clean renewable energy source.

Gorlov, Alexander M. (Brookline, MA)

1991-01-01T23:59:59.000Z

244

Tidal Generation Ltd | Open Energy Information  

Open Energy Info (EERE)

Ltd Ltd Jump to: navigation, search Name Tidal Generation Ltd Address University Gate East Park Row Place Bristol, United Kingdom Zip BS1 5UB Sector Marine and Hydrokinetic Product Tidal Generation is developing a 1MW fully submerged tidal turbine to generate electricity from tidal currents in water depths up to 50m. Phone number 4.41E+11 Website http://www.tidalgeneration.co. Coordinates 42.55678°, -88.050449° 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":42.55678,"lon":-88.050449,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

245

Reduce, reuse, recycle for robust cluster-state generation  

SciTech Connect

Efficient generation of cluster states is crucial for engineering large-scale measurement-based quantum computers. Hybrid matter-optical systems offer a robust, scalable path to this goal. Such systems have an ancilla which acts as a bus connecting the qubits. We show that by generating the cluster in smaller sections of interlocking bricks, reusing one ancilla per brick, the cluster can be produced with maximal efficiency, requiring fewer than half the operations compared with no bus reuse. By reducing the time required to prepare sections of the cluster, bus reuse more than doubles the size of the computational workspace that can be used before decoherence effects dominate. A row of buses in parallel provides fully scalable cluster-state generation requiring only 20 controlled-phase gates per bus use.

Horsman, Clare [Department of Mathematics, University of Bristol, University Walk, Bristol BS8 1TW (United Kingdom); H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol, BS8 1TL (United Kingdom); Brown, Katherine L.; Kendon, Vivien M. [School of Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT (United Kingdom); Munro, William J. [National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda ku, Tokyo 101-8430 (Japan); NTT Basic Research Laboratories, NTT Corporation, 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198 (Japan)

2011-04-15T23:59:59.000Z

246

ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred  

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

Announces 2012 Energy Innovation Summit Featuring Bill Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred Smith and Lee Scott ARPA-E Announces 2012 Energy Innovation Summit Featuring Bill Gates, Fred Smith and Lee Scott September 9, 2011 - 9:25am Addthis New York, NY - The U.S. Department of Energy's Advanced Research Projects Agency - Energy (ARPA-E) Director, Arun Majumdar, announced yesterday that the Agency will hold its third annual ARPA-E Energy Innovation Summit from February 27 - 29, 2012 at the Gaylord Convention Center just outside Washington, D.C. Bill Gates, founder and chairman of Microsoft; Fred Smith, chairman, president and CEO of FedEx; and Lee Scott, former CEO of Wal-Mart; will join Secretary Chu and Director Majumdar as distinguished keynote speakers. "After two successful Summits, I'm excited to once again bring some of

247

Optical imaging through turbid media with a degenerate four-wave mixing correlation time gate  

DOE Patents (OSTI)

Optical imaging through turbid media is demonstrated using a degenerate four-wave mixing correlation time gate. An apparatus and method for detecting ballistic and/or snake light while rejecting unwanted diffusive light for imaging structures within highly scattering media are described. Degenerate four-wave mixing (DFWM) of a doubled YAG laser in rhodamine 590 is used to provide an ultrafast correlation time gate to discriminate against light that has undergone multiple scattering and therefore has lost memory of the structures within the scattering medium. Images have been obtained of a test cross-hair pattern through highly turbid suspensions of whole milk in water that are opaque to the naked eye, which demonstrates the utility of DFWM for imaging through turbid media. Use of DFWM as an ultrafast time gate for the detection of ballistic and/or snake light in optical mammography is discussed.

Sappey, Andrew D. (Golden, CO)

1998-04-14T23:59:59.000Z

248

Performance and reliability improvement of HfSiON gate dielectrics using chlorine plasma treatment  

Science Conference Proceedings (OSTI)

The effects of chlorine plasma treatment on HfSiON gate dielectrics were investigated with respect to device performance and reliability characteristics. The chlorine plasma treatment was performed on atomic layer deposited HfSiON films to remove the residual carbon content. The optimal chlorine plasma treatment is shown to lower gate leakage current density without increasing equivalent oxide thickness of the gate stack. Secondary ion mass spectroscopy depth profiling showed that the carbon residue in HfSiON was reduced by the chlorine plasma treatment. It is demonstrated that an optimized chlorine plasma treatment improves the transistor I{sub on}-I{sub off} characteristics and reduces negative-bias temperature instability.

Park, Hong Bae; Ju, Byongsun [Samsung Electronics R and D Center (Korea, Republic of); Kang, Chang Yong; Park, Chanro; Park, Chang Seo [SEMATECH, Austin, Texas 78741 (United States); Lee, Byoung Hun [Gwangju Institute of Science and Technology, Gwangju (Korea, Republic of); Kim, Tea Wan; Kim, Beom Seok; Choi, Rino [Inha University, 253 Yonghyun-dong, Nam-gu, Incheon 402-751 (Korea, Republic of)

2009-01-26T23:59:59.000Z

249

Dual Gate Thin Film Transistors Based on Indium Oxide Active Layers  

SciTech Connect

Polycrystalline Indium Oxide (In{sub 2}O{sub 3}) thin films were employed as an active channel layer for the fabrication of bottom and top gate thin film transistors. While conventional SiO{sub 2} served as a bottom gate dielectric, cross-linked poly-4-vinylphenol (PVP) was used a top gate dielectric. These nano-crystalline TFTs exhibited n-channel behavior with their transport behavior highly dependent on the thickness of the channel. The correlation between the thickness of the active layer and TFT parameters such as on/off ratio, field-effect mobility, threshold voltage were carried out. The optical spectra revealed a high transmittance in the entire visible region, thus making them promising candidates for the display technology.

Kekuda, Dhananjaya; Rao, K. Mohan; Tolpadi, Amita [Department of Physics, Manipal Institute of Technology, Manipal University, Manipal 576 104 (India); Chu, C. W. [Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan (China)

2011-07-15T23:59:59.000Z

250

High-fidelity CZ gate for resonator-based superconducting quantum computers  

E-Print Network (OSTI)

A possible building block for a scalable quantum computer has recently been demonstrated [M. Mariantoni et al., Science 334, 61 (2011)]. This architecture consists of superconducting qubits capacitively coupled both to individual memory resonators as well as a common bus. In this work we study a natural primitive entangling gate for this and related resonator-based architectures, which consists of a CZ operation between a qubit and the bus. The CZ gate is implemented with the aid of the non-computational qubit |2> state [F. W. Strauch et al., Phys. Rev. Lett. 91, 167005 (2003)]. Assuming phase or transmon qubits with 300 MHz anharmonicity, we show that by using only low frequency qubit-bias control it is possible to implement the qubit-bus CZ gate with 99.9% (99.99%) fidelity in about 17ns (23ns) with a realistic two-parameter pulse profile, plus two auxiliary z rotations. The fidelity measure we refer to here is a state-averaged intrinsic process fidelity, which does not include any effects of noise or decoherence. These results apply to a multi-qubit device that includes strongly coupled memory resonators. We investigate the performance of the qubit-bus CZ gate as a function of qubit anharmonicity, indentify the dominant intrinsic error mechanism and derive an associated fidelity estimator, quantify the pulse shape sensitivity and precision requirements, simulate qubit-qubit CZ gates that are mediated by the bus resonator, and also attempt a global optimization of system parameters including resonator frequencies and couplings. Our results are relevant for a wide range of superconducting hardware designs that incorporate resonators and suggest that it should be possible to demonstrate a 99.9% CZ gate with existing transmon qubits, which would constitute an important step towards the development of an error-corrected superconducting quantum computer.

Joydip Ghosh; Andrei Galiautdinov; Zhongyuan Zhou; Alexander N. Korotkov; John M. Martinis; Michael R. Geller

2013-01-08T23:59:59.000Z

251

The robustness of magic state distillation against errors in Clifford gates  

E-Print Network (OSTI)

Quantum error correction and fault-tolerance have provided the possibility for large scale quantum computations without a detrimental loss of quantum information. A very natural class of gates for fault-tolerant quantum computation is the Clifford gate set and as such their usefulness for universal quantum computation is of great interest. Clifford group gates augmented by magic state preparation give the possibility of simulating universal quantum computation. However, experimentally one cannot expect to perfectly prepare magic states. Nonetheless, it has been shown that by repeatedly applying operations from the Clifford group and measurements in the Pauli basis, the fidelity of noisy prepared magic states can be increased arbitrarily close to a pure magic state [1]. We investigate the robustness of magic state distillation to perturbations of the initial states to arbitrary locations in the Bloch sphere due to noise. Additionally, we consider a depolarizing noise model on the quantum gates in the decoding section of the distillation protocol and demonstrate its effect on the convergence rate and threshold value. Finally, we establish that faulty magic state distillation is more efficient than fault-tolerance-assisted magic state distillation at low error rates due to the large overhead in the number of quantum gates and qubits required in a fault-tolerance architecture. The ability to perform magic state distillation with noisy gates leads us to conclude that this could be a realistic scheme for future small-scale quantum computing devices as fault-tolerance need only be used in the final steps of the protocol.

Tomas Jochym-O'Connor; Yafei Yu; Bassam Helou; Raymond Laflamme

2012-05-30T23:59:59.000Z

252

Next Generation Radioisotope Generators | Department of Energy  

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

» Next Generation Radioisotope Generators » Next Generation Radioisotope Generators Next Generation Radioisotope Generators Advanced Stirling Radioisotope Generator (ASRG) - The ASRG is currently being developed as a high-efficiency RPS technology to support future space missions on the Martian surface or in the vacuum of space. This system uses Stirling convertors, which have moving parts to mechanically convert heat to electricity. This power conversion system, if successfully deployed, will reduce the weight of each RPS and the amount of Pu-238 needed per mission. A HISTORY OF MISSION SUCCESSES For over fifty years, the Department of Energy has enabled space exploration on 27 missions by providing safe reliable radioistope power systems and radioisotope heater units for NASA, Navy and Air Force.

253

Single-photon two-qubit SWAP gate for entanglement manipulation  

E-Print Network (OSTI)

A SWAP operation between different types of qubits of single photons is essential for manipulating hyperentangled photons for a variety of applications. We have implemented an efficient SWAP gate for the momentum and polarization degrees of freedom of single photons. The SWAP gate was utilized in a single-photon two-qubit quantum logic circuit to deterministically transfer momentum entanglement between a pair of down-converted photons to polarization entanglement. The polarization entanglement thus obtained violates Bell's inequality by more than 150 standard deviations.

Marco Fiorentino; Taehyun Kim; Franco N. C. Wong

2004-07-16T23:59:59.000Z

254

A Radar Study of Convective Cells in Mesoscale Systems in GATE. Part II: Life Cycles of Convective Cells  

Science Conference Proceedings (OSTI)

This is Part II of a two-part paper describing the vertical profile of radar reflectivity in GATE convective cells. Time-height radar life histories for 42 cells over three GATE days are examined, using data from the Quadra radar with 5-minute ...

Edward J. Szoke; Edward J. Zipser

1986-01-01T23:59:59.000Z

255

Crystal Structure of the Mammalian GIRK2 KplusChannel and Gating Regulation by G Proteins PIP2 and Sodium  

SciTech Connect

G protein-gated K{sup +} channels (Kir3.1--Kir3.4) control electrical excitability in many different cells. Among their functions relevant to human physiology and disease, they regulate the heart rate and govern a wide range of neuronal activities. Here, we present the first crystal structures of a G protein-gated K{sup +} channel. By comparing the wild-type structure to that of a constitutively active mutant, we identify a global conformational change through which G proteins could open a G loop gate in the cytoplasmic domain. The structures of both channels in the absence and presence of PIP{sub 2} suggest that G proteins open only the G loop gate in the absence of PIP{sub 2}, but in the presence of PIP{sub 2} the G loop gate and a second inner helix gate become coupled, so that both gates open. We also identify a strategically located Na{sup +} ion-binding site, which would allow intracellular Na{sup +} to modulate GIRK channel activity. These data provide a structural basis for understanding multiligand regulation of GIRK channel gating.

M Whorton; R MacKinnon

2011-12-31T23:59:59.000Z

256

Recovery of negative bias temperature instability induced degradation of p-MOSFETs with SiON gate dielectric  

Science Conference Proceedings (OSTI)

This paper investigates the recovery property of p-MOSFETs with an ultra-thin SiON gate dielectric which are degraded by negative bias temperature instability (NBTI). The experimental results indicate that the recovery of the NBTI degradation occurs ... Keywords: Gate dielectric, MOSFET, Negative bias temperature instability (NBTI), Reliability, Silicon oxynitride

Y. D. Kim; S. U. Han; H. S. Kang; B. K. Kang

2008-09-01T23:59:59.000Z

257

The progress and challenges of threshold voltage control of high-k/metal-gated devices for advanced technologies (Invited Paper)  

Science Conference Proceedings (OSTI)

This paper discusses recent progress in and challenges of threshold voltage control for advanced high-k/metal-gated (HKMG) devices. It presents the impact on threshold voltage (V"t) control of incorporating La and Al into HKMG devices. A dipole moment ... Keywords: CMOS, Capping layer, EOT, High-k, Metal gate, Threshold voltage control

Hsing-Huang Tseng; Paul Kirsch; C. S. Park; Gennadi Bersuker; Prashant Majhi; Muhammad Hussain; Raj Jammy

2009-07-01T23:59:59.000Z

258

A field programmable gate array unit for the diagnosis and control of neoclassical tearing modes on MAST  

E-Print Network (OSTI)

A field programmable gate array unit for the diagnosis and control of neoclassical tearing modes OF SCIENTIFIC INSTRUMENTS 83, 10E312 (2012) A field programmable gate array unit for the diagnosis and control, University of York, York YO10 5DD, United Kingdom 2 EURATOM/CCFE Fusion Association, Culham Science Centre

259

Electrical and physical characteristics of HfLaON-gated metal-oxide-semiconductor capacitors with various nitrogen concentration profiles  

Science Conference Proceedings (OSTI)

The comparative studies of electrical and physical characteristics of HfLaON-gated metal-oxide-semiconductor (MOS) capacitors with various nitrogen concentration profiles (NCPs) were investigated. Various NCPs in HfLaON gate dielectrics were adjusted ... Keywords: Charge trapping, Current-conduction, High-k dielectric, Metal-oxide-semiconductor (MOS), Nitrogen concentration profiles (NCPs)

Chin-Lung Cheng; Jeng-Haur Horng; Hung-Yang Tsai

2011-02-01T23:59:59.000Z

260

An Infrastructure to Functionally Test Designs Generated by Compilers Targeting FPGAs  

E-Print Network (OSTI)

This paper presents an infrastructure to test the functionality of the specific architectures output by a high-level compiler targeting dynamically reconfigurable hardware. It results in a suitable scheme to verify the architectures generated by the compiler, each time new optimization techniques are included or changes in the compiler are performed. We believe this kind of infrastructure is important to verify, by functional simulation, further research techniques, as far as compilation to Field-Programmable Gate Array (FPGA) platforms is concerned.

Rodrigues, Rui

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Open-ended Taiwan history and spirit-oriented cultural politics : a study of Cloud Gate's works in the postcolonial and global age  

E-Print Network (OSTI)

The Novel and Literary History (1934-41). The BakhtinCorporealizing Taiwans History: Cloud Gates Portrait ofZhang 116-135. ---. Dance History and Cultural Politics: A

Wei, Ling-Chen

2010-01-01T23:59:59.000Z

262

DOE Accepted Carriers Date: April 8, 2008 POC: Dave Lopez, MA-30  

E-Print Network (OSTI)

United States DOE-Accepted Charter 138 Axis Airways France ICAO Designated Cat 1 Carrier 139 Azerbaijan Airlines Azerbaijan IATA Member Airline 140 Bahamasair Bahamas ICAO Designated Cat 1 Carrier 141 Bangkok

263

ESS 2012 Peer Review - Sodium-based Battery Development - Dave Ingersoll, SNL  

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

Sodium-based Battery Development Sodium-based Battery Development A Family of Batteries for Large Scale Energy Storage D. Ingersoll, C. Apblett, E. Spoerke, K. Zavadil, R. Cygan, J. Ihlefeld, F. Delnick, & T. Anderson Sandia National Laboratories, Albuquerque, NM Prof. E. Wachsman University of Maryland, College Park, MD Profs. R. Kee & J. Porter, Dr. H. Zhu Colorado School of Mines, Golden, CO S. Bhavaraju & M. Robins Ceramatec, Inc, Salt Lake City, UT D. Beeaff CoorsTek, Inc, Golden, CO J. Martin Boulder Ionics, Golden CO US DOE Energy Storage Systems Research Program Peer Review, Washington, DC, Sept. 26-28, 2012 Sodium-based batteries  Purpose  Demonstrate a family of sodium-based battery chemistries  sodium-iodine, sodium-bromine, sodium-air, sodium insertion, sodium-metal, etc

264

A CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates  

E-Print Network (OSTI)

This thesis describes a CAD tool for the power estimation of CMOS, BiCMOS and BiNMOS gates. Using analytical models for the transient behavior of the gates, accurate estimates of the power dissipated by each type of gate during a typical transition are arrived at. The values thus obtained show a very good agreement with those obtained from HSPICE simulations. A detailed transient analysis is performed on the BiCMOS gate in particular and a expression for the current response is derived. This piecewise expression accurately models the current behavior of the BICMOS gate taking into account all important second-order effects. The current expression obtained enables a quick and accurate estimate of the power dissipation.

Islam, Kazi Inamul

1995-01-01T23:59:59.000Z

265

Hydrogen Generation by Electrolysis  

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

Better Engineered Solutions. Better Engineered Solutions. What Listening Generates. Better Engineered Solutions. What Listening Generates. Hydrogen Generation by Electrolysis September 2004 Steve Cohen Hydrogen Generation by Electrolysis September 2004 Steve Cohen NREL H 2 Electrolysis - Utility Integration Workshop NREL H 2 Electrolysis - Utility Integration Workshop 2 Hydrogen Generation by Electrolysis Hydrogen Generation by Electrolysis  Intro to Teledyne Energy Systems  H 2 Generator Basics & Major Subsystems  H 2 Generating & Storage System Overview  Electrolysis System Efficiency & Economics  Focus for Attaining DOE H 2 Production Cost Goals 3 Teledyne Energy Systems Locations - ISO 9001 Teledyne Energy Systems Locations - ISO 9001 Hunt Valley, Maryland  State-of-the-art thermoelectric,

266

Siemens Power Generation, Inc.  

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

Presented at the 2005 Pittsburgh Coal Conference Siemens Power Generation, Inc. Page 1 of 10 Siemens Power Generation, Inc., All Rights Reserved Development of a Catalytic...

267

Industrial Waste Generation  

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

9) Page 2 of 7 Industrial Waste Generation Work with Engineered Nanomaterials Power Consumption Historical Contamination (groundwater, soil) Hazardous Waste Generation Atmospheric...

268

Scanning gate microscopy on graphene: charge inhomogeneity and extrinsic doping This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network (OSTI)

mode tip and local top gate. Electrical transport through graphene at various back gate voltages is monitored as a function of tip voltage and tip position. Near the Dirac point, the response of graphene, USA. graphene field effect transistor (GFET), a voltage applied to a gate (capacitively coupled

Chen, Yong P.

269

Numerical analysis of the heat transfer for packing design of cryogenic gate valve  

Science Conference Proceedings (OSTI)

The packing, among the components comprising the gate valve, is used to sustain the airtightness and the study on change of shape or pattern has been carried out to maximize the functions, but the study on changing the location or the size of the packing ... Keywords: cryogenic, heat transfer, liquefied natural gas, numerical analysis, packing

Si Pom Kim; Rock Won Jeon; Il Ju Hwang; Jae Hoon Lee; Won Heaop Shin

2012-04-01T23:59:59.000Z

270

Method and system for measuring gate valve clearances and seating force  

DOE Patents (OSTI)

Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner.

Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN); Moyers, John C. (Oak Ridge, TN); Stewart, Brian K. (Burns, TN)

1996-01-01T23:59:59.000Z

271

Analyzing Combined Impacts of Parameter Variations and BTI in Nano-scale Logical Gates  

E-Print Network (OSTI)

Analyzing Combined Impacts of Parameter Variations and BTI in Nano-scale Logical Gates Seyab Khan conclusions. 2 Background and Analysis Framework Fig. 1(a) shows the threshold voltage increment (Vth) due variation, delay model, and presents the analysis framework. First MEDIAN Workshop 2012 7 #12;2 Seyab Khan

Hamdioui, Said

272

A quantum logic gate between a solid-state quantum bit and a photon  

E-Print Network (OSTI)

Integrated quantum photonics provides a promising route towards scalable solid-state implementations of quantum networks, quantum computers, and ultra-low power opto-electronic devices. A key component for many of these applications is the photonic quantum logic gate, where the quantum state of a solid-state quantum bit (qubit) conditionally controls the state of a photonic qubit. These gates are crucial for development of robust quantum networks, non-destructive quantum measurements, and strong photon-photon interactions. Here we experimentally realize a quantum logic gate between an optical photon and a solid-state qubit. The qubit is composed of a quantum dot (QD) strongly coupled to a nano-cavity, which acts as a coherently controllable qubit system that conditionally flips the polarization of a photon on picosecond timescales, implementing a controlled-NOT (cNOT) gate. Our results represent an important step towards solid-state quantum networks and provide a versatile approach for probing QD-photon inter...

Kim, Hyochul; Shen, Thomas C; Solomon, Glenn S; Waks, Edo; 10.1038/nphoton.2013.48

2013-01-01T23:59:59.000Z

273

The effect of interfacial layer properties on the performance of Hf-based gate stack devices  

E-Print Network (OSTI)

-k-induced oxygen deficiency in the IL consistent with the electrical data. It is concluded that high temperature. © 2006 American Institute of Physics. DOI: 10.1063/1.2362905 I. INTRODUCTION To sustain the historical rate of transistor scaling, the conventional SiO2 gate dielectric layer must be replaced

Pennycook, Steve

274

Numerical Modeling of a Line of Towering Cumulus on Day 226 of GATE  

Science Conference Proceedings (OSTI)

A three-dimensional numerical model with warm rain bulk cloud physics is used to investigate the shallow convection observed on day 226 of GATE. This convection had cloud tops at 3.0 km, cloud bases at 0.4 km and approximately 0.1 cm of rain at ...

Frank B. Lipps; Richard S. Hemler

1988-09-01T23:59:59.000Z

275

Basic State Energy Budget Analysis for Phases 1, 2 and 3 of GATE  

Science Conference Proceedings (OSTI)

A diagnostic study of the budget of zonal and eddy components of available potential and kinetic energy is presented for the large-scale basic (time-averaged) state of the atmosphere for Phases 1, 2 and 3 of GATE. The Final Validated Data Set (...

Randy A. Peppler; Dayton G. Vincent

1983-02-01T23:59:59.000Z

276

Effect of lateral strain on gate induced control of electrical conduction in single layer graphene device  

Science Conference Proceedings (OSTI)

We study numerically the effect of various types of in-plane strain on the electronic transport property in the single layer graphene connected to two metallic electrodes, with the special attention to the dependences on the gate voltage, channel length, ... Keywords: Electronic transport, Graphene, Strain

Satofumi Souma; Yusuke Ohmi; Matsuto Ogawa

2013-06-01T23:59:59.000Z

277

PGCapping: exploiting power gating for power capping and core lifetime balancing in CMPs  

Science Conference Proceedings (OSTI)

Optimizing the performance of a chip multiprocessor (CMP) within a power cap has recently received a lot of attention. However, most existing solutions rely solely on DVFS, which is anticipated to have only limited actuation ranges in the future. Power ... Keywords: chip multiprocessor, control theory, lifetime balancing, power capping, power control, power gating

Kai Ma; Xiaorui Wang

2012-09-01T23:59:59.000Z

278

Characterization of voltage-gated ionic currents in a peripheral sensory neuron in larval Drosophila  

E-Print Network (OSTI)

the normalized I-V relationship for INa in larval dbds (n = 8). These data show that in dbds, INa begins to activate at - 50 to -40 mV and reaches peak amplitude at -30 to -20 mV. Discussion In this study, we have presented measurements of volt- age-gated ionic...

Nair, Amit; Bate, Michael; Pulver, Stefan R

2010-06-02T23:59:59.000Z

279

Case Studies on Variation Tolerant and Low Power Design Using Planar Asymmetric Double Gate Transistor  

E-Print Network (OSTI)

In nanometer technologies, process variation control and low power have emerged as the first order design goal after high performance. Process variations cause high variability in performance and power consumption of an IC, which affects the overall yield. Short channel effects (SCEs) deteriorate the MOSFET performance and lead to higher leakage power. Double gate devices suppress SCEs and are potential candidates for replacing Bulk technology in nanometer nodes. Threshold voltage control in planar asymmetric double gate transistor (IGFET) using a fourth terminal provides an effective means of combating process variations and low power design. In this thesis, using various case studies, we analyzed the suitability of IGFET for variation control and low power design. We also performed an extensive comparison between IGFET and Bulk for reducing variability, improving yield and leakage power reduction using power gating. We also proposed a new circuit topology for IGFET, which on average shows 33.8 percent lower leakage and 34.9 percent lower area at the cost of 2.8 percent increase in total active mode power, for basic logic gates. Finally, we showed a technique for reducing leakage of minimum sized devices designed using new circuit topology for IGFET.

Singh, Amrinder

2010-08-01T23:59:59.000Z

280

Investigating physical and chemical changes in high-k gate stacks using nanoanalytical electron microscopy  

Science Conference Proceedings (OSTI)

The thermal budget involved in processing high-k gate stacks can cause undesirable physical and chemical changes which limit device performance. The transmission electron microscope and associated analytical techniques provide a way of investigating ... Keywords: Electron energy loss near edge structure, Electron energy loss spectroscopy, High-k dielectrics, Nanoanalytical electron microscopy

A. J. Craven; M. MacKenzie; D. W. McComb; F. T. Docherty

2005-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

A Diagnostic Study of the Diurnal Rainfall Variation in the GATE B-Scale Area  

Science Conference Proceedings (OSTI)

Heat and moisture budgets are used to compute net condensation rates in the GATE B-scale network for four hours of the day: 0000, 0600, 1200 and 1800 GMT. Budgets are presented for all phases combined, for selected periods of enhanced convection ...

Mark D. Albright; Donald R. Mock; Ernest E. Recker; Richard J. Reed

1981-07-01T23:59:59.000Z

282

The Surface Wave Environment In the GATE B/C ScalePhase III  

Science Conference Proceedings (OSTI)

The surface wave environment in the GATE B/C scale is described from wave measurements made from buoys and aircraft during Phase III (September 1974). Particular emphasis is given to the wave measurements made from the pitch-roll buoy deployed in ...

V. Cardone; H. Carlson; J. A. Ewing; K. Hasselmann; S. Lazanoff; W. McLeish; D. Ross

1981-09-01T23:59:59.000Z

283

UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence  

DOE Green Energy (OSTI)

UC Davis??s existing GATE centers have become the campus??s research focal points on fuel cells and hybrid-electric vehicles, and the home for graduate students who are studying advanced automotive technologies. The centers have been highly successful in attracting, training, and placing top-notch students into fuel cell and hybrid programs in both industry and government.

Erickson, Paul

2012-05-31T23:59:59.000Z

284

Self?aligned high electron mobility transistor gate fabrication using focused ion beams  

Science Conference Proceedings (OSTI)

A new gate fabrication technique has been developed based on focused ion beam exposure and reactive ion etching of a polymethylmethacrylate (PMMA)/Ge/PMMA multilevel resist structure. The focused ion beam exposes the thin PMMA imaging layer that is transferred directly to the germanium layer using reactive ion etching (RIE). The underlying resist is etched first in oxygen at high pressure

G. M. Atkinson; R. L. Kubena; L. E. Larson; L. D. Nguyen; F. P. Stratton; L. M. Jelloian; M. V. Le; H. McNulty

1991-01-01T23:59:59.000Z

285

Useful-Skew Clock Routing with Gate Sizing for Low Power Design  

Science Conference Proceedings (OSTI)

This paper presents a new problem formulation and algorithm of clock routing combined with gate sizing for minimizing total logic and clock power. Instead of zero-skew or assuming a fixed skew bound, we seek to produce useful skews in clock routing. ...

Joe Gufeng Xi; Wayne Wei-Ming Dai

1997-07-01T23:59:59.000Z

286

US DOE Sponsored Graduate Automotive Technology Education (GATE) Program at Penn State Emphasizing  

E-Print Network (OSTI)

- power in-vehicle energy storage for hybrid electric and fuel cell vehicles covering the fundamental into energy storage curriculum including vehicle topologies, advanced combustion, fuel cells, power from DOE. ME 597F HIL Advanced Vehicles (3) Contact: Joel R. Anstrom Director of Penn State GATE Center

Lee, Dongwon

287

A low-power, multichannel gated oscillator-based CDR for short-haul applications  

Science Conference Proceedings (OSTI)

A gated current-controlled oscillator (GCCO) based topology is used to implement a low-power multi-channel clock and data recovery (CDR) system in a 0.18um digital CMOS technology. A systematic approach is presented to design a reliable and low-power ...

Armin Tajalli; Paul Muller; Mojtaba Atarodi; Yusuf Leblebici

2005-08-01T23:59:59.000Z

288

Uniaxial Strain Effects on the Performance of a Ballistic Top Gate Graphene Nanoribbon on Insulator Transistor  

Science Conference Proceedings (OSTI)

The effects of uniaxial strain on the bandgap and performance of a top gate graphene nanoribbon (GNR) on insulator transistor are studied using pi-orbital basis 3-D ballistic quantum simulation. The bandgap variation with strain shows zigzag pattern ... Keywords: Graphene nanoribbon (GNR) on insulator transistor, nonequilibrium Green's function (NEGF) formalism, performance of GNR transistor, strain effects

K. Alam

2009-07-01T23:59:59.000Z

289

Novel universal threshold logic gate based on RTD and its application  

Science Conference Proceedings (OSTI)

Resonant tunneling diodes (RTDs) are receiving much attention because of their high-speed switching capability and functional versatility. Due to the negative differential resistance exhibited by RTDs, great functionality with a single gate can be achieved. ... Keywords: Monostable-bistable logic element (MOBILE), Resonant tunneling diode (RTD), Spectral technology, Threshold logic

Yi Wei; Jizhong Shen

2011-06-01T23:59:59.000Z

290

Guardians at the Gates of Hell Estimating the Risk of Nuclear Theft and Terrorism  

E-Print Network (OSTI)

of nuclear theft in Russia, Pakistan, and from HEU-fueled research reactors are highlighted. SecondGuardians at the Gates of Hell Estimating the Risk of Nuclear Theft and Terrorism ­ and Identifying the Highest-Priority Risks of Nuclear Theft by Matthew Bunn SB and SM, Political Science, MIT, 1985 SUBMITTED

de Weck, Olivier L.

291

Dosimetric effect of intrafraction tumor motion in phase gated lung stereotactic body radiotherapy  

Science Conference Proceedings (OSTI)

Purpose: A major concern for lung intensity modulated radiation therapy delivery is the deviation of actually delivered dose distribution from the planned one due to simultaneous movements of multileaf collimator (MLC) leaves and tumor. For gated lung stereotactic body radiotherapy treatment (SBRT), the situation becomes even more complicated because of SBRT's characteristics such as fewer fractions, smaller target volume, higher dose rate, and extended fractional treatment time. The purpose of this work is to investigate the dosimetric effect of intrafraction tumor motion during gated lung SBRT delivery by reconstructing the delivered dose distribution with real-time tumor motion considered. Methods: The tumor motion data were retrieved from six lung patients. Each of them received three fractions of stereotactic radiotherapy treatments with Cyberknife Synchrony (Accuray, Sunnyvale, CA). Phase gating through an external surrogate was simulated with a gating window of 5 mm. The resulting residual tumor motion curves during gating (beam-on) were retrieved. Planning target volume (PTV) was defined as physician-contoured clinical target volume (CTV) surrounded by an isotropic 5 mm margin. Each patient was prescribed with 60 Gy/3 fractions. The authors developed an algorithm to reconstruct the delivered dose with tumor motion. The DMLC segments, mainly leaf position and segment weighting factor, were recalculated according to the probability density function of tumor motion curve. The new DMLC sequence file was imported back to treatment planning system to reconstruct the dose distribution. Results: Half of the patients in the study group experienced PTV D95% deviation up to 26% for fractional dose and 14% for total dose. CTV mean dose dropped by 1% with tumor motion. Although CTV is almost covered by prescribed dose with 5 mm margin, qualitative comparison on the dose distributions reveals that CTV is on the verge of underdose. The discrepancy happens due to tumor excursion outside of the gating window, which, for our study group, is mainly caused by baseline shift, i.e., the change in general trend of the motion curve during extended period of treatment time. Conclusions: The dose deviation in PTV and CTV due to target motion is not always negligible in gated SBRT. Although CTVs are covered sufficiently with prescribed dose in most cases, some are on the verge of underdose due to large tumor excursion caused by factors such as baseline shift.

Zhao Bo; Yang Yong; Li Tianfang; Li Xiang; Heron, Dwight E.; Huq, M. Saiful [Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232 (United States) and Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, Texas 75390 (United States); Department of Radiation Oncology, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania 15232 (United States)

2012-11-15T23:59:59.000Z

292

Short range micro-power impulse radar with high resolution swept range gate with damped transmit and receive cavities  

DOE Patents (OSTI)

A radar range finder and hidden object locator is based on ultra-wide band radar with a high resolution swept range gate. The device generates an equivalent time amplitude scan with atypical range of 4 inches to 20 feet, and an analog range resolution as limited by a jitter of on the order of 0.01 inches. A differential sampling receiver is employed to effectively eliminate ringing and other aberrations induced in the receiver by the near proximity of the transmit antenna, so a background subtraction is not needed, simplifying the circuitry while improving performance. Uses of the invention include a replacement of ultrasound devices for fluid level sensing, automotive radar, such as cruise control and parking assistance, hidden object location, such as stud and rebar finding. Also, this technology can be used when positioned over a highway lane to collect vehicle count and speed data for traffic control. Techniques are used to reduce clutter in the receive signal, such as decoupling the receive and transmit cavities by placing a space between them, using conductive or radiative damping elements on the cavities, and using terminating plates on the sides of the openings. 20 figs.

McEwan, T.E.

1998-06-30T23:59:59.000Z

293

Synchronized operation by field programmable gate array based signal controller for the Thomson scattering diagnostic system in KSTAR  

Science Conference Proceedings (OSTI)

The Thomson scattering diagnostic system is successfully installed in the Korea Superconducting Tokamak Advanced Research (KSTAR) facility. We got the electron temperature and electron density data for the first time in 2011, 4th campaign using a field programmable gate array (FPGA) based signal control board. It operates as a signal generator, a detector, a controller, and a time measuring device. This board produces two configurable trigger pulses to operate Nd:YAG laser system and receives a laser beam detection signal from a photodiode detector. It allows a trigger pulse to be delivered to a time delay module to make a scattered signal measurement, measuring an asynchronous time value between the KSTAR timing board and the laser system injection signal. All functions are controlled by the embedded processor running on operating system within a single FPGA. It provides Ethernet communication interface and is configured with standard middleware to integrate with KSTAR. This controller has operated for two experimental campaigns including commissioning and performed the reconfiguration of logic designs to accommodate varying experimental situation without hardware rebuilding.

Lee, W. R.; Park, M. K.; Lee, J. H. [National Fusion Research Institute, Gwahangno 113, Daejeon 305-333 (Korea, Republic of); Kim, H. S. [Chungnam National University, Daehak-ro 99, Daejeon 305-764 (Korea, Republic of); Kim, K. H. [Seed Core Co., Ltd., Daehak-ro 99, Daejeon 305-764 (Korea, Republic of)

2012-09-15T23:59:59.000Z

294

High fidelity gate operations within the coupled nuclear and electron spins of a nitrogen vacancy center in diamond  

E-Print Network (OSTI)

In this article we investigate the dynamics of a single negatively charged nitrogen-vacancy center (NV-) coupled to the spin of the nucleus of a 15-nitrogen atom and show that high fidelity gate operations are possible without the need for complicated composite pulse sequences. These operations include both the electron and nuclear spin rotations, as well as an entangling gate between them. These are experimentally realizable gates with current technology of sufficiently high fidelities that they can be used to build graph states for quantum information processing tasks.

Mark S. Everitt; Simon Devitt; W. J. Munro; Kae Nemoto

2013-09-12T23:59:59.000Z

295

Computational Research Challenges and Opportunities for the Optimization of Fossil Energy Power Generation System  

Science Conference Proceedings (OSTI)

Emerging fossil energy power generation systems must operate with unprecedented efficiency and near-zero emissions, while optimizing profitably amid cost fluctuations for raw materials, finished products, and energy. To help address these challenges, the fossil energy industry will have to rely increasingly on the use advanced computational tools for modeling and simulating complex process systems. In this paper, we present the computational research challenges and opportunities for the optimization of fossil energy power generation systems across the plant lifecycle from process synthesis and design to plant operations. We also look beyond the plant gates to discuss research challenges and opportunities for enterprise-wide optimization, including planning, scheduling, and supply chain technologies.

Zitney, S.E.

2007-06-01T23:59:59.000Z

296

Using Backup Generators  

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

Power outages are commonplace during disasters, and they may last for several days. You can reduce losses and speed the recovery process by installing an emergency generator. Portable generators...

297

Next Generation Light Source  

Next Generation Light Source Super Thin Light Bulb, Energy Efficient, Long Life, Dimmable, and Uniform Illumination High Entry Barrier 71 ...

298

Main Generator Rotor Maintenance  

Science Conference Proceedings (OSTI)

Main generator rotors are constructed and designed to provide decades of reliable and trouble-free operation. However, a number of incidences have occurred over the years that can adversely impact reliable operation of generator rotors and, ultimately, production of electrical power. This report is a guide for power plant personnel responsible for reliable operation and maintenance of main generators. As a guide, this report provides knowledge and experience from generator experts working at power plants...

2006-11-27T23:59:59.000Z

299

Generating safe template languages  

Science Conference Proceedings (OSTI)

Template languages are widely used within generative programming, because they provide intuitive means to generate software artefacts expressed in a specific object language. However, most template languages perform template instantiation on the level ... Keywords: generative programming, language extension, safe authoring, template language

Florian Heidenreich; Jendrik Johannes; Mirko Seifert; Christian Wende; Marcel Bhme

2009-10-01T23:59:59.000Z

300

An in depth examination of semi floating gate ultra low voltage flip-flops for high speed applications.  

E-Print Network (OSTI)

??In this thesis 4 different ultra low voltage (ULV) flip-flops are presented. Floating gates has been exploited to significantly increase the drain-source current. This technique (more)

Simenstad, Erik Jonathan

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

MOLECULAR AND CELLULAR CONSEQUENCES OF DISEASE ASSOCIATED PROCESSING DEFECTS IN CONE PHOTORECEPTOR CYCLIC NUCLEOTIDE-GATED CHANNELS .  

E-Print Network (OSTI)

??Cyclic nucleotide-gated (CNG) channels are heterotetrameric (2A3:2B3) cation channels critical to the molecular cascade that couples light stimulus to membrane potential changes in photoreceptor cells. (more)

Duricka, Deborah Lynn

2011-01-01T23:59:59.000Z

302

Implications of Simultaneous Requirements for Low Noise Exchange Gates in Double Quantum Dots  

E-Print Network (OSTI)

Achieving low-error, exchange-interaction operations in quantum dots for quantum computing imposes simultaneous requirements on the exchange energy's dependence on applied voltages. A double quantum dot (DQD) qubit, approximated with a quadratic potential, is solved using a full configuration interaction method. This method is more accurate than Heitler-London and Hund-Mulliken approaches and captures new and significant qualitative behavior. We show that multiple regimes can be found in which the exchange energy's dependence on the bias voltage between the dots is compatible with current quantum error correction codes and state-of-the-art electronics. Identifying such regimes may prove valuable for the construction and operation of quantum gates that are robust to charge fluctuations, particularly in the case of dynamically corrected gates.

Nielsen, Erik; Muller, Richard P; Carroll, M S

2010-01-01T23:59:59.000Z

303

Implications of Simultaneous Requirements for Low Noise Exchange Gates in Double Quantum Dots  

E-Print Network (OSTI)

Achieving low-error, exchange-interaction operations in quantum dots for quantum computing imposes simultaneous requirements on the exchange energy's dependence on applied voltages. A double quantum dot (DQD) qubit, approximated with a quadratic potential, is solved using a full configuration interaction method. This method is more accurate than Heitler-London and Hund-Mulliken approaches and captures new and significant qualitative behavior. We show that multiple regimes can be found in which the exchange energy's dependence on the bias voltage between the dots is compatible with current quantum error correction codes and state-of-the-art electronics. Identifying such regimes may prove valuable for the construction and operation of quantum gates that are robust to charge fluctuations, particularly in the case of dynamically corrected gates.

Erik Nielsen; Ralph W. Young; Richard P. Muller; M. S. Carroll

2009-08-31T23:59:59.000Z

304

Practical fast gate rate InGaAs/InP single-photon avalanche photodiodes  

E-Print Network (OSTI)

We present a practical and easy-to-implement method for high-speed near infrared single-photon detection based on InGaAs/InP single-photon avalanche photodiodes (SPADs), combining aspects of both sine gating and self-differencing techniques. At a gating frequency of 921 MHz and temperature of -30 $^{\\circ}$C we achieve: a detection efficiency of 9.3 %, a dark count probability of 2.8$\\times10^{-6}$ ns$^{-1}$, while the afterpulse probability is 1.6$\\times10^{-4}$ ns$^{-1}$, with a 10 ns "count-off time" setting. In principle, the maximum count rate of the SPAD can approach 100 MHz, which can significantly improve the performance for diverse applications.

Jun Zhang; Rob Thew; Claudio Barreiro; Hugo Zbinden

2009-08-16T23:59:59.000Z

305

An entangling quantum-logic gate operated with an ultrabright single photon-source  

E-Print Network (OSTI)

We demonstrate unambiguous entangling operation of a photonic quantum-logic gate driven by an ultrabright solid-state single-photon source. Indistinguishable single photons emitted by a single semiconductor quantum dot in a micropillar optical cavity are used as target and control qubits. For a source brightness of 0.56 collected photons-per-pulse, the measured truth table has an overlap with the ideal case of 68.4%, increasing to 73.0% for a source brightness of 0.17 photons- per-pulse. The gate is entangling: at a source brightness of 0.48, the Bell-state fidelity is above the entangling threshold of 50%, and reaches 71.0% for a source brightness of 0.15.

O. Gazzano; M. P. Almeida; A. K. Nowak; S. L. Portalupi; A. Lematre; I. Sagnes; A. G. White.; P. Senellart

2013-03-01T23:59:59.000Z

306

Motor/generator  

DOE Patents (OSTI)

A motor/generator is provided for connecting between a transmission input shaft and an output shaft of a prime mover. The motor/generator may include a motor/generator housing, a stator mounted to the motor/generator housing, a rotor mounted at least partially within the motor/generator housing and rotatable about a rotor rotation axis, and a transmission-shaft coupler drivingly coupled to the rotor. The transmission-shaft coupler may include a clamp, which may include a base attached to the rotor and a plurality of adjustable jaws.

Hickam, Christopher Dale (Glasford, IL)

2008-05-13T23:59:59.000Z

307

ESS 2012 Peer Review - Engineered Gate Oxides for Wide Bandgap Semiconductor MOSFETs - Jon Ihlefeld, SNL  

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

-5 -5 10 -4 10 -3 10 -2 10 -1 10 0 10 1 -6 -4 -2 0 2 4 6 8 10 |J Leakage | (A-cm -2 ) Semiconductor Voltage (V) Engineered Gate Oxides for Wide Bandgap S emiconductor M OSFETs* Jon I hlefeld, M ichael B rumbach, S andeepan D asGupta, and Stanley AtciEy Sandia NaGonal Laboratories *Sponsored b y t he U .S. D epartment o f E nergy's O ffice o f E lectricity E nergy S torage Systems P rogram jihlefe@sandia.gov, 505---844---3162; s atciE@sandia.gov, 505---284---2701 Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-AC04-94AL85000. SAND No. 2011-XXXXP Cooling Power electronics Energy storage Energy storage -V gate Low defect oxide Metal gate Wide

308

Conservation-Law-Induced Quantum Limits for Physical Realizations of the Quantum NOT Gate  

E-Print Network (OSTI)

In recent investigations, it has been found that conservation laws generally lead to precision limits on quantum computing. Lower bounds of the error probability have been obtained for various logic operations from the commutation relation between the noise operator and the conserved quantity or from the recently developed universal uncertainty principle for the noise-disturbance trade-off in general measurements. However, the problem of obtaining the precision limit to realizing the quantum NOT gate has eluded a solution from these approaches. Here, we develop a new method for this problem based on analyzing the trace distance between the output state from the realization under consideration and the one from the ideal gate. Using the mathematical apparatus of orthogonal polynomials, we obtain a general lower bound on the error probability for the realization of the quantum NOT gate in terms of the number of qubits in the control system under the conservation of the total angular momentum of the computational qubit plus the the control system along the direction used to encode the computational basis. The lower bound turns out to be more stringent than one might expect from previous results. The new method is expected to lead to more accurate estimates for physical realizations of various types of quantum computations under conservation laws, and to contribute to related problems such as the accuracy of programmable quantum processors.

Tokishiro Karasawa; Masanao Ozawa

2007-05-14T23:59:59.000Z

309

Dynamic and short-circuit power of CMOS gates driving lossless transmission lines  

E-Print Network (OSTI)

AbstractThe dynamic and short-circuit power consumption of a complementary metaloxidesemidconductor (CMOS) gate driving an inductancecapacitance (LC) transmission line as a limiting case of an RLC transmission line is investigated in this paper. Closed-form solutions for the output voltage and shortcircuit power of a CMOS gate driving an LC transmission line are presented. A closed form solution for the short-circuit power is also presented. These solutions agree with circuit simulations within 11 % error for a wide range of transistor widths and line impedances for a 0.25-"m CMOS technology. The ratio of the short circuit to dynamic power is shown to be less than 7 % for CMOS gates driving LC transmission lines where the line is matched or underdriven. The total power consumption is expected to decrease as inductance effects becomes more significant as compared to a resistancecapacitance (RC)-dominated interconnect line. Index TermsCMOS, dynamic, interconnect, LC, power dissipation, RC, RLC, short-circuit, transmission lines.

Yehea I. Ismail; Eby G. Friedman; Senior Member; Jose Luis Neves

1999-01-01T23:59:59.000Z

310

Pulse-dilation enhanced gated optical imager with 5 ps resolution (invited)  

Science Conference Proceedings (OSTI)

A 5 ps gated framing camera was demonstrated using the pulse-dilation of a drifting electron signal. The pulse-dilation is achieved by accelerating a photoelectron derived information pulse with a time varying potential [R. D. Prosser, J. Phys. E 9, 57 (1976)]. The temporal dependence of the accelerating potential causes a birth time dependent axial velocity dispersion that spreads the pulse as it transits a drift region. The expanded pulse is then imaged with a conventional gated microchannel plate based framing camera and the effective gating time of the combined instrument is reduced over that of the framing camera alone. In the drift region, electron image defocusing in the transverse or image plane is prevented with a large axial magnetic field. Details of the unique issues associated with rf excited photocathodes were investigated numerically and a prototype instrument based on this principle was recently constructed. Temporal resolution of the instrument was measured with a frequency tripled femtosecond laser operating at 266 nm. The system demonstrated 20x temporal magnification and the results are presented here. X-ray image formation strategies and photometric calculations for inertial confinement fusion implosion experiments are also examined.

Hilsabeck, T. J.; Kilkenny, J. D. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Hares, J. D.; Dymoke-Bradshaw, A. K. L. [Kentech Instruments Ltd., Wallingford, Oxfordshire OX10 (United Kingdom); Bell, P. M.; Koch, J. A.; Celliers, P. M.; Bradley, D. K.; McCarville, T.; Pivovaroff, M.; Soufli, R.; Bionta, R. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2010-10-15T23:59:59.000Z

311

Respiration Induced Heart Motion and Indications of Gated Delivery for Left-Sided Breast Irradiation  

SciTech Connect

Purpose: To investigate respiration-induced heart motion for left-sided breast irradiation using a four-dimensional computed tomography (4DCT) technique and to determine novel indications to assess heart motion and identify breast patients who may benefit from a gated treatment. Methods and Materials: Images of 4DCT acquired during free breathing for 20 left-sided breast cancer patients, who underwent whole breast irradiation with or without regional nodal irradiation, were analyzed retrospectively. Dose distributions were reconstructed in the phases of 0%, 20%, and 50%. The intrafractional heart displacement was measured in three selected transverse CT slices using D{sub LAD} (the distance from left ascending aorta to a fixed line [connecting middle point of sternum and the body] drawn on each slice) and maximum heart depth (MHD, the distance of the forefront of the heart to the line). Linear regression analysis was used to correlate these indices with mean heart dose and heart dose volume at different breathing phases. Results: Respiration-induced heart displacement resulted in observable variations in dose delivered to the heart. During a normal free-breathing cycle, heart-induced motion D{sub LAD} and MHD changed up to 9 and 11 mm respectively, resulting in up to 38% and 39% increases of mean doses and V{sub 25.2} for the heart. MHD and D{sub LAD} were positively correlated with mean heart dose and heart dose volume. Respiratory-adapted gated treatment may better spare heart and ipsilateral-lung compared with the conventional non-gated plan in a subset of patients with large D{sub LAD} or MHD variations. Conclusion: Proposed indices offer novel assessment of heart displacement based on 4DCT images. MHD and D{sub LAD} can be used independently or jointly as selection criteria for respiratory gating procedure before treatment planning. Patients with great intrafractional MHD variations or tumor(s) close to the diaphragm may particularly benefit from the gated treatment.

Qi, X. Sharon, E-mail: xiangrong.qi@ucdenver.edu [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Hu, Angela [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Wang Kai [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States); Newman, Francis [Department of Radiation Oncology, University of Colorado Denver, Aurora, CO (United States); Crosby, Marcus; Hu Bin; White, Julia; Li, X. Allen [Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI (United States)

2012-04-01T23:59:59.000Z

312

Steam generator support system  

SciTech Connect

A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances.

Moldenhauer, James E. (Simi Valley, CA)

1987-01-01T23:59:59.000Z

313

Steam generator designs  

SciTech Connect

A combined cycle is any one of combinations of gas turbines, steam generators or heat recovery equipment, and steam turbines assembled for the reduction in plant cost or improvement of cycle efficiency in the utility power generation process. The variety of combined cycles discussed for the possibilities for industrial applications include gas turbine plus unfired steam generator; gas turbine plus supplementary fired steam generator; gas turbine plus furnace-fired steam generator; and supercharged furnace-fired system generator plus gas turbine. These units are large enough to meet the demands for the utility applications and with the advent of economical coal gasification processes to provide clean fuel, the combined-cycle applications are solicited. (MCW)

Clayton, W.H.; Singer, J.G.

1973-07-01T23:59:59.000Z

314

Steam generator support system  

DOE Patents (OSTI)

A support system for connection to an outer surface of a J-shaped steam generator for use with a nuclear reactor or other liquid metal cooled power source is disclosed. The J-shaped steam generator is mounted with the bent portion at the bottom. An arrangement of elongated rod members provides both horizontal and vertical support for the steam generator. The rod members are interconnected to the steam generator assembly and a support structure in a manner which provides for thermal distortion of the steam generator without the transfer of bending moments to the support structure and in a like manner substantially minimizes forces being transferred between the support structure and the steam generator as a result of seismic disturbances. 4 figs.

Moldenhauer, J.E.

1987-08-25T23:59:59.000Z

315

Method of grid generation  

DOE Patents (OSTI)

The present invention provides a method of grid generation that uses the geometry of the problem space and the governing relations to generate a grid. The method can generate a grid with minimized discretization errors, and with minimal user interaction. The method of the present invention comprises assigning grid cell locations so that, when the governing relations are discretized using the grid, at least some of the discretization errors are substantially zero. Conventional grid generation is driven by the problem space geometry; grid generation according to the present invention is driven by problem space geometry and by governing relations. The present invention accordingly can provide two significant benefits: more efficient and accurate modeling since discretization errors are minimized, and reduced cost grid generation since less human interaction is required.

Barnette, Daniel W. (Veguita, NM)

2002-01-01T23:59:59.000Z

316

generation | OpenEI  

Open Energy Info (EERE)

generation generation 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 16, and contains only the reference case. Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords AEO generation renewable energy renewable energy generating capacity Data application/vnd.ms-excel icon AEO2011: Renewable Energy Generating Capacity and Generation- Reference Case (xls, 118.9 KiB) Quality Metrics Level of Review Peer Reviewed Comment Temporal and Spatial Coverage Frequency Annually Time Period 2008-2035 License License Open Data Commons Public Domain Dedication and Licence (PDDL) Comment Rate this dataset Usefulness of the metadata

317

Unprecedented Generation Shifts  

Science Conference Proceedings (OSTI)

The economic recession, which reduced electricity demand, and falling natural gas costs have brought about unprecedented shifts in electric generation. These developments have affected coal-fired generation the most, leading to operational challenges (cycling and shut downs), deterioration of financial performance, and an awareness of the vulnerability of many units to retirement. A third force, though usually affecting natural gas unit operations more than coal, is the build-up of wind generation. This ...

2010-12-31T23:59:59.000Z

318

Steam generator replacement overview  

Science Conference Proceedings (OSTI)

Since nuclear power began to be widely used for commercial purposes in the 1960s, unit operators have experienced a variety of problems with major components. Although many of the problems have diminished considerably, those associated with pressurized water reactor (PWR) steam generators persist. Steam generator problems rank second, behind refueling outages, as the most significant contributor to lost electricity generation. As of December 31, 1995, 38 steam generators had been replaced in 13 of the 72 operating PWRs, and three units had been shut down prematurely, due primarily (or partially) to degradation of their steam generators: Portland General Electric`s Trojan unit, located in Prescott, OR, in 1992; Southern California Edison`s San Onofre 1, located in San Clemente, CA, in 1992; and Sacramento Municipal Utility District`s Rancho Seco unit in 1989. In the coming years, operators of PWRs in the US with degraded steam generators will have to decide whether to make annual repairs (with eventual derating likely), replace the generators or shut the plants down prematurely. To understand the issues and decisions utility managers face, this article examines problems encountered at steam generators over the past few decades and identifies some of the remedies that utility operators and the nuclear community have employed, including operational changes, maintenance, repairs and steam generator replacement.

Chernoff, H. [Science Applications International Corp., McLean, VA (United States); Wade, K.C. [USDOE Energy Information Administration, Washington, DC (United States)

1996-01-01T23:59:59.000Z

319

EIA - Electricity Generating Capacity  

U.S. Energy Information Administration (EIA) Indexed Site

imports and exports. Renewable & Alternative Fuels Includes hydropower, solar, wind, geothermal, biomass and ethanol. Nuclear & Uranium Uranium fuel, nuclear reactors, generation,...

320

Generator backup overcurrent protection  

Science Conference Proceedings (OSTI)

A concern that the characteristics and correct application of the generator backup relay are misunderstood is addressed in this report to the Power Systems Protection Committee. It is inherently a secure device, and rarely has the opportunity to operate in its intended capacity. So the question was asked, ''Do generator backup overcurrent relays really protect anything.'' In response a description of the function and operating characteristics of the backup relays, a discussion of generator fault current behavior, examples of relay settings for a typical application, and methods and criteria for determining that the relay both protects the generator and operates selectively with other protective devices are included.

Baker, D.S.

1982-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Next Generation Neural Implants  

Science Conference Proceedings (OSTI)

... They are still bulky, rigid, power hungry, and functionally limited. ... This talk will review progress on next generation implants, which must be miniature ...

2010-10-05T23:59:59.000Z

322

Next Generation Test Bed  

Science Conference Proceedings (OSTI)

... 3 machine rooms (safety, security, power, & A/C). Supports COOP ... ii. Developing methods and technologies for next generation biometric testing. ...

2011-12-15T23:59:59.000Z

323

Isolated trigger pulse generator  

DOE Patents (OSTI)

A trigger pulse generation system capable of delivering a multiplicity of isolated 100 kV trigger pulses with picosecond simultaneity. 2 figs.

Aaland, K.

1980-02-19T23:59:59.000Z

324

Radioisotope Power Generation  

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

Radioisotope Power Generation Long lived power sources are needed for equipment that is too remote or inaccessible for replacement. By choosing a radioactive element with a long...

325

New Generation of MJTCs  

Science Conference Proceedings (OSTI)

... After years of effort and scores of iterations, PML researchers have developed a new generation of devices that can reduce the uncertainties in ac ...

2013-06-24T23:59:59.000Z

326

Generation IV Program  

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

an international initiative. A group of ten nations, including France, Japan, Russia, Korea, China, and Canada, are participating in the planning and development of Generation IV...

327

Functional Image-Guided Radiotherapy Planning in Respiratory-Gated Intensity-Modulated Radiotherapy for Lung Cancer Patients With Chronic Obstructive Pulmonary Disease  

SciTech Connect

Purpose: To investigate the incorporation of functional lung image-derived low attenuation area (LAA) based on four-dimensional computed tomography (4D-CT) into respiratory-gated intensity-modulated radiotherapy (IMRT) or volumetric modulated arc therapy (VMAT) in treatment planning for lung cancer patients with chronic obstructive pulmonary disease (COPD). Methods and Materials: Eight lung cancer patients with COPD were the subjects of this study. LAA was generated from 4D-CT data sets according to CT values of less than than -860 Hounsfield units (HU) as a threshold. The functional lung image was defined as the area where LAA was excluded from the image of the total lung. Two respiratory-gated radiotherapy plans (70 Gy/35 fractions) were designed and compared in each patient as follows: Plan A was an anatomical IMRT or VMAT plan based on the total lung; Plan F was a functional IMRT or VMAT plan based on the functional lung. Dosimetric parameters (percentage of total lung volume irradiated with {>=}20 Gy [V20], and mean dose of total lung [MLD]) of the two plans were compared. Results: V20 was lower in Plan F than in Plan A (mean 1.5%, p = 0.025 in IMRT, mean 1.6%, p = 0.044 in VMAT) achieved by a reduction in MLD (mean 0.23 Gy, p = 0.083 in IMRT, mean 0.5 Gy, p = 0.042 in VMAT). No differences were noted in target volume coverage and organ-at-risk doses. Conclusions: Functional IGRT planning based on LAA in respiratory-guided IMRT or VMAT appears to be effective in preserving a functional lung in lung cancer patients with COPD.

Kimura, Tomoki, E-mail: tkkimura@hiroshima-u.ac.jp [Department of Radiation Oncology, Hiroshima University, Graduate School of Biomedical Sciences, Hiroshima City (Japan); Nishibuchi, Ikuno; Murakami, Yuji; Kenjo, Masahiro; Kaneyasu, Yuko; Nagata, Yasushi [Department of Radiation Oncology, Hiroshima University, Graduate School of Biomedical Sciences, Hiroshima City (Japan)

2012-03-15T23:59:59.000Z

328

Improved Off-State Stress Critical Voltage on AlGaN/GaN High Electron Mobility Transistors Utilizing Pt/Ti/Au Based Gate Metallization  

Science Conference Proceedings (OSTI)

The critical voltage for degradation of AlGaN/GaN high electron mobility transistors (HEMTs) employed with the Pt/Ti/Au gate metallization instead of the commonly used Ni/Au was significantly increased during the off-state stress. The typical critical voltage for HEMTs with Ni/Au gate metallization was around -60V. By sharp contrast, no critical voltage was observed for the HEMTs with Pt/Ti/Au gate metallization, even up to -100V, which was the instrumental limitation in this experiment. Both Schottky forward and reverse gate characteristics of the Ni/Au degraded once the gate voltage passed the critical voltage of around -60V. There was no degradation exhibited for the HEMTs with Pt-gated HEMTs.

Lo, C. F. [University of Florida; Liu, L. [University of Florida, Gainesville; Kang, Tsung Sheng [University of Florida, Gainesville; Davies, Ryan [University of Florida; Gila, Brent P. [University of Florida, Gainesville; Pearton, S. J. [University of Florida; Kravchenko, Ivan I [ORNL; Laboutin, O. [Kopin Corporation, Taunton, MA; Cao, Yu [Kopin Corporation, Taunton, MA; Johnson, Wayne J. [Kopin Corporation, Taunton, MA; Ren, F. [University of Florida

2011-01-01T23:59:59.000Z

329

A 500 MHz phase generator for synthetic aperture radar waveform synthesizers  

Science Conference Proceedings (OSTI)

A GaAs Phase Generator ASIC has been developed using GigaBit's SC10000 standard cell library which produces the quadratic phase necessary to generate a linear-FM chirp waveform. Fully functional chips have been fabricated using a 3-layer metal, 0.9 {mu}m gate E/D-MESFET process. Measured maximum accumulation rates vary from 450 MHz to 590 MHz. The chip is fully ECL and TTL compatible and is packaged in GigaBit's standard 132-pin ceramic package. The phase generator has been successfully tested in a prototype synthetic aperture radar at Sandia National Laboratories. Sample rates as high as 800 Msamples/sec have been synthesized using two phase generator/sine ROM combinations in parallel driving a TriQuint TQ6112 DAC. 5 refs., 5 figs.

Remund, B.L. (Sandia National Labs., Albuquerque, NM (United States)); Srivatsa, C.R. (GigaBit Logic, Newbury Park, CA (United States))

1991-01-01T23:59:59.000Z

330

Patient radiation dose in prospectively gated axial CT coronary angiography and retrospectively gated helical technique with a 320-detector row CT scanner  

Science Conference Proceedings (OSTI)

Purpose: The aim of this study was to evaluate radiation dose to patients undergoing computed tomography coronary angiography (CTCA) for prospectively gated axial (PGA) technique and retrospectively gated helical (RGH) technique. Methods: Radiation doses were measured for a 320-detector row CT scanner (Toshiba Aquilion ONE) using small sized silicon-photodiode dosimeters, which were implanted at various tissue and organ positions within an anthropomorphic phantom for a standard Japanese adult male. Output signals from photodiode dosimeters were read out on a personal computer, from which organ and effective doses were computed according to guidelines published in the International Commission on Radiological Protection Publication 103. Results: Organs that received high doses were breast, followed by lung, esophagus, and liver. Breast doses obtained with PGA technique and a phase window width of 16% at a simulated heart rate of 60 beats per minute were 13 mGy compared to 53 mGy with RGH technique using electrocardiographically dependent dose modulation at the same phase window width as that in PGA technique. Effective doses obtained in this case were 4.7 and 20 mSv for the PGA and RGH techniques, respectively. Conversion factors of dose length product to the effective dose in PGA and RGH were 0.022 and 0.025 mSv mGy{sup -1} cm{sup -1} with a scan length of 140 mm. Conclusions: CTCA performed with PGA technique provided a substantial effective dose reduction, i.e., 70%-76%, compared to RGH technique using the dose modulation at the same phase windows as those in PGA technique. Though radiation doses in CTCA with RGH technique were the same level as, or some higher than, those in conventional coronary angiography (CCA), the use of PGA technique reduced organ and effective doses to levels less than CCA except for breast dose.

Seguchi, Shigenobu; Aoyama, Takahiko; Koyama, Shuji; Fujii, Keisuke; Yamauchi-Kawaura, Chiyo [Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan) and Department of Medical Technology, Nagoya Daini Red Cross Hospital, Myouken-chou, Showa-ku, Nagoya 466-8650 (Japan); Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan); Section of Radiological Protection, National Institute of Radiological Sciences, Anagawa, Inage-ku, Chiba 263-8555 (Japan); Graduate School of Medicine, Nagoya University, Daikominami, Higashi-ku, Nagoya 461-8673 (Japan)

2010-11-15T23:59:59.000Z

331

Accelerated Publication: Drain current enhancement and negligible current collapse in GaN MOSFETs with atomic-layer-deposited HfO2 as a gate dielectric  

Science Conference Proceedings (OSTI)

Accumulation-type GaN metal-oxide-semiconductor field-effect-transistors (MOSFET's) with atomic-layer-deposited HfO"2 gate dielectrics have been fabricated; a 4@mm gate-length device with a gate dielectric of 14.8nm in thickness (an equivalent SiO"2 ... Keywords: Atomic layer deposition (ALD), Current collapse, GaN, HfO2, Metal-oxide-semiconductor field-effect-transistor (MOSFET)

Y. C. Chang; W. H. Chang; Y. H. Chang; J. Kwo; Y. S. Lin; S. H. Hsu; J. M. Hong; C. C. Tsai; M. Hong

2010-11-01T23:59:59.000Z

332

JMLUnit: the next generation  

Science Conference Proceedings (OSTI)

Designing unit test suites for object-oriented systems is a painstaking, repetitive, and error-prone task, and significant research has been devoted to the automatic generation of test suites. One method for generating unit tests is to use formal class ...

Daniel M. Zimmerman; Rinkesh Nagmoti

2010-06-01T23:59:59.000Z

333

Laser beam generating apparatus  

DOE Patents (OSTI)

Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 11 figures.

Warner, B.E.; Duncan, D.B.

1993-12-28T23:59:59.000Z

334

Laser beam generating apparatus  

DOE Patents (OSTI)

Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect).

Warner, Bruce E. (Livermore, CA); Duncan, David B. (Auburn, CA)

1994-01-01T23:59:59.000Z

335

Laser beam generating apparatus  

DOE Patents (OSTI)

Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus is described. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect). 7 figures.

Warner, B.E.; Duncan, D.B.

1994-02-15T23:59:59.000Z

336

Laser beam generating apparatus  

DOE Patents (OSTI)

Laser beam generating apparatus including a septum segment disposed longitudinally within the tubular structure of the apparatus. The septum provides for radiatively dissipating heat buildup within the tubular structure and for generating relatively uniform laser beam pulses so as to minimize or eliminate radial pulse delays (the chevron effect).

Warner, Bruce E. (Livermore, CA); Duncan, David B. (Auburn, CA)

1993-01-01T23:59:59.000Z

337

Kivalina wind generator  

Science Conference Proceedings (OSTI)

The project reported was to construct a system to harness the winds of an Arctic site to generate electricity that would power a greenhouse where fruit and vegetables could be raised for local consumption. The installation of the tower and an Enertech 4K wind generator are described. (LEW)

Aldrich, D.

1984-02-18T23:59:59.000Z

338

Internal split field generator  

DOE Patents (OSTI)

A generator includes a coil of conductive material. A stationary magnetic field source applies a stationary magnetic field to the coil. An internal magnetic field source is disposed within a cavity of the coil to apply a moving magnetic field to the coil. The stationary magnetic field interacts with the moving magnetic field to generate an electrical energy in the coil.

Thundat; ,Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)

2012-01-03T23:59:59.000Z

339

Numerical Generation of Entropies  

Science Conference Proceedings (OSTI)

The spurious numerical generation and/or destruction of various types of entropies in models is investigated. It is shown that entropy s? of dry matter tends to be generated if potential temperature is advected by a damping scheme. There is no ...

Joseph Egger

1999-09-01T23:59:59.000Z

340

Generative model transformer  

Science Conference Proceedings (OSTI)

The Generative Model Transformer (GMT) project is an Open Source initiative to build a Model Driven Architecure tool that allows fully customisable Platform Independent Models, Platform Description Models, Texture Mappings, and Refinement Transformations. ... Keywords: QVT, domain-specific languages, generative model transformer (GMT), model driven architecture (MDA), model transformation, open source

Jorn Bettin; Ghica van Emde Boas

2003-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Solid aerosol generator  

DOE Patents (OSTI)

An improved solid aerosol generator used to produce a gas borne stream of dry, solid particles of predetermined size and concentration. The improved solid aerosol generator nebulizes a feed solution of known concentration with a flow of preheated gas and dries the resultant wet heated aerosol in a grounded, conical heating chamber, achieving high recovery and flow rates.

Prescott, Donald S. (Shelley, ID); Schober, Robert K. (Midwest City, OK); Beller, John (Idaho Falls, ID)

1992-01-01T23:59:59.000Z

342

Invariant generation in vampire  

Science Conference Proceedings (OSTI)

This paper describes a loop invariant generator implemented in the theorem prover Vampire. It is based on the symbol elimination method proposed by two authors of this paper. The generator accepts a program written in a subset of C, finds loops in it, ...

Krytof Hoder; Laura Kovcs; Andrei Voronkov

2011-03-01T23:59:59.000Z

343

Reactivity of Acid Generators  

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

Reactivity of Acid Generators for Chemically Amplified Resists with Reactivity of Acid Generators for Chemically Amplified Resists with Low-Energy Electrons Atsuro Nakano, Takahiro Kozawa, Seiichi Tagawa, Tomasz Szreder, James F. Wishart, Toshiyuki Kai and Tsutomu Shimokawa Jpn. J. Appl. Phys., 45, L197-L200 (2006). [Find paper at the Japanese Journal of Applied Physics] Abstract: In chemically amplified resists for ionizing radiations such as electron beams and extreme ultraviolet (EUV), low-energy electrons play an important role in the pattern formation processes. The reactivity of acid generators with low-energy electrons was evaluated using solvated electrons in tetrahydrofuran, which were generated by a pulsed electron beam. The rate constants of acid generators with the solvated electrons ranged from 0.6 to 1.9 x 1011 M-1s-1

344

TFTR Motor Generator  

SciTech Connect

A general description is given of 475 MVA pulsed motor generators for TFTR at Princeton Plasma Physics Laboratory. Two identical generators operating in parallel are capable of supplying 950 MVA for an equivalent square pulse of 6.77 seconds and 4,500 MJ at 0.7 power factor to provide the energy for the pulsed electrical coils and heating system for TFTR. The description includes the operational features of the 15,000 HP wound rotor motors driving each generator with its starting equipment and cycloconverter for controlling speed, power factor, and regulating line voltage during load pulsing where the generator speed changes from 87.5 to 60 Hz frequency variation to provide the 4,500 MJ or energy. The special design characteristics such as fatigue stress calculations for 10/sup 6/ cycles of operation, forcing factor on exciter to provide regulation, and low generator impedance are reviewed.

Murray, J.G.; Bronner, G.; Horton, M.

1977-01-01T23:59:59.000Z

345

Quantum computation with moving quantum dots generated by surface acoustic waves  

Science Conference Proceedings (OSTI)

Motivated by recent experimental observations [M. Kataoka et al., Phys. Rev. Lett. 102, 156801 (2009)], we propose here a theoretical approach to implement quantum computation with bound states of electrons in moving quantum dots generated by the driving of surface acoustic waves. Differing from static quantum dots defined by a series of static electrodes above the two-dimensional electron gas (2DEG), here a single electron is captured from a 2DEG reservoir by a surface acoustic wave and then trapped in a moving quantum dot (MQD) transported across a quasi-one-dimensional channel, wherein all the electrons have been excluded by the actions of the surface gates. The flying qubit introduced here is encoded by the two lowest levels of the electron in the MQD, and the Rabi oscillation between these two levels could be implemented by applying finely selected microwave pulses to the surface gates. By using the Coulomb interaction between the electrons in different MQDs, we show that a desirable two-qubit operation, i.e., iswap gate, could be realized. Readouts of the present flying qubits are also feasible with the current single-electron detected technique.

Shi, X.; Zhang, M. [Quantum Optoelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University, Chengdu 610031 (China); Wei, L. F. [Quantum Optoelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University, Chengdu 610031 (China); State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics Science and Engineering, Sun Yet-sen University, Guangzhou 510275 (China)

2011-12-15T23:59:59.000Z

346

Steam Generator Management Program: Steam Generator Progress Report  

Science Conference Proceedings (OSTI)

Since 1985, EPRI has published the Steam Generator Progress Report (SGPR), which provides historical information on worldwide steam generator activities.

2009-10-19T23:59:59.000Z

347

The effective Hamiltonian of the Pound-Overhauser controlled-NOT gate, submitted for publication  

E-Print Network (OSTI)

Abstract. In NMR-based quantum computing, it is known that the controlled-NOT gate can be implemented by applying a low-power, monochromatic radiofrequency field to one peak of a doublet in a weakly-coupled two-spin system. This is known in NMR spectroscopy as Pound-Overhauser double resonance. The transition Hamiltonian that has been associated with this procedure is however only an approximation, which ignores off-resonance effects and does not correctly predict the associated phase factors. In this paper, the exact effective Hamiltonian for evolution of the spins state in a rotating frame is derived, both under irradiation of a single peak (on-transition) as well as between the peaks of the doublet (onresonance). The accuracy of these effective Hamiltonians is validated by comparing the observable product operator components of the density matrix obtained by simulation to those obtained by fitting the corresponding experiments. It is further shown that an on-resonance field yields a new implementation of the controlled-NOT gate up to phase factors, wherein the field converts the I A z state into the antiphase state 2IAx IBz, which is then converted into the desired two-spin order 2I A z IBz by a broadband ?/2 pulse selective for the A spin. In the on-transition case, it is explained that while a controlled-NOT gate is approximately obtained whenever the radio-frequency field power is low compared to the spin-spin coupling, at certain specific power levels an exact implementation is obtained up to phase factors. For both these implementations, the phase factors are derived exactly, enabling them to be corrected. In Appendices, the on-resonance Hamiltonian is analytically diagonalized, and proofs are given that, in the weak-coupling approximation, off-resonance effects can be neglected whenever the radio-frequency field power is small compared to the difference in resonance frequencies of the two spins.

David G Cory; Amy E Dunlop; Timothy F Havel; S Somaroo; Wurong Zhang

1999-01-01T23:59:59.000Z

348

Gain-offunction mutations reveal expanded intermediate states and a sequential action of two gates in  

E-Print Network (OSTI)

abstract The tension-driven gating transition in the large mechanosensitive channel MscL proceeds through detectable states of intermediate conductance. Gain-of-function (GOF) mutants with polar or charged substitutions in the main hydrophobic gate display altered patterns of subconducting states, providing valuable information about gating intermediates. Here we present thermodynamic analysis of several GOF mutants to clarify the nature and position of low-conducting conformations in the transition pathway. Unlike wild-type (WT) MscL, which predominantly occupies the closed and fully open states with very brief substates, the mild V23T GOF mutant frequently visits a multitude of short-lived subconducting states. Severe mutants V23D and G22N open in sequence: closed (C) ? low-conducting substate (S) ? open (O), with the first subtransition occurring at lower tensions. Analyses of equilibrium state occupancies as functions of membrane tension show that the C?S subtransition in WT MscL is associated with only a minor conductance increment, but the largest in-plane expansion and free energy change. The GOF substitutions strongly affect the first subtransition by reducing area (?A) and energy (?E) changes between C and S states commensurably with the severity of mutation. GOF mutants also exhibited a considerably larger ?E associated with the second (S?O) subtransition, but a ?A similar to WT. The area changes indicate that closed conformations of GOF mutants are physically preexpanded. The tension dependencies of rate constants for channel closure (k off) predict different positions of rate-limiting barriers on the energy-area profiles

Andriy Anishkin; Chien-sung Chiang; Sergei Sukharev

2005-01-01T23:59:59.000Z

349

Cloning and first functional characterization of a plant cyclic nucleotide-gated cation channel  

Science Conference Proceedings (OSTI)

Cyclic nucleotide-gated (cng) non-selective cation channels have been cloned from a number of animal systems. These channels are characterized by direct gating upon cAMO or cGMO binding to the intracellular portion of the channel protein, which leads to an increase in channel conductance. Animal cng channels are involved in signal transduction systems; they translate stimulus-induced changes in cytosolic cyclic nucleotide into altered cell membrane potential and/or cation flux as part of a signal cascade pathway. Putative plant homologs of animal cng channels have been identified. However, functional characterization (i.e., demonstration of cyclic-nucleotide-dependent ion currents) of a plant cng channel has not yet been accomplished. The authors report the cloning and first functional characterization of a plant member of this family of ion channels. The Arabidopsis cDNA AtCNGC2 encodes a polypeptide with deduced homology to the {alpha}-subunit of animal channels, and facilitates cyclic nucleotide-dependent cation currents upon expression in a number of heterologous systems. AtCNGC2 expression in a yeast mutant lacking a low-affinity K{sup +} uptake system complements growth inhibition only when lipophilic nucleotides are present in the culture medium. Voltage clamp analysis indicates that Xenopus lawvis oocytes injected with AtCNGC2 cRNA demonstrate cyclic-nucleotide-dependent, inward-rectifying K{sup +} currents. Human embryonic kidney cells (HEK293) transfected with AtCNGC2 cDNA demonstrate increased permeability to Ca{sup 2+} only in the presence of lipophilic cyclic nucleotides. The evidence presented here supports the functional classification of AtCNGC2 as a cyclic-nucleotide-gated cation channel, and presents the first direct evidence identifying a plant member of this ion channel family.

Leng, Q.; Mercier, R.W.; Yao, W.; Berkowitz, G.A.

1999-11-01T23:59:59.000Z

350

Winning in electricity generation  

SciTech Connect

Should you be a buyer or a seller of generation? In general, spot buyers should do very well, while many generation owners will be fortunate to recover their stranded costs. Successful generators will capitalize on superior operating performance and market knowledge. The smartest natural gas strategy in the early 1980`s was to short natural gas. Will this lesson of restructuring be written again of the electricity generation business of the late 1990`s? The authors will examine whether and how winners might emerge in the generation business of the future. The U.S. electric generation market, already marked by intense competition for new capacity and industrial demand, will become even more competitive as it makes the transition from regulated local monopoly to marketbased commodity pricing. At risk is up to $150 billion of shareholder equity and the future viability of half of the country`s investor-owned utilities. The winners in year 2005 will be those who early on developed strategies that simultaneously recovered existing generation investments while restructuring their asset portfolios and repositioning their plants to compete in the new market. Losers will have spent the time mired in indecision, their strategies ultimately forced upon them by regulators or competitors.

Hashimoto, L. [McKinsey & Co., Los Angeles, CA (United States)] [McKinsey & Co., Los Angeles, CA (United States); Jansen, P. [McKinsey & Co., San Francisco, CA (United States)] [McKinsey & Co., San Francisco, CA (United States); Geyn, G. van [McKinsey & Co., Toronto (Canada)] [McKinsey & Co., Toronto (Canada)

1996-08-01T23:59:59.000Z

351

Design of a scanning gate microscope in a cryogen-free dilution refrigerator  

E-Print Network (OSTI)

We report on our design of a scanning gate microscope housed in a cryogen-free dilution refrigerator with a base temperature of 15 mK. The recent increase in efficiency of pulse tube cryocoolers has made cryogen-free systems popular in recent years. However, this new style of cryostat presents challenges for performing scanning probe measurements, mainly as a result of the vibrations introduced by the cryocooler. We demonstrate scanning with root-mean-square vibrations of 0.8 nm at 3 K and 2.1 nm at 15 mK in a 1 kHz bandwidth with our design.

Pelliccione, Matthew; Bartel, John; Keller, Andrew; Goldhaber-Gordon, David

2012-01-01T23:59:59.000Z

352

Demonstration of an optical quantum controlled-NOT gate without path interference  

E-Print Network (OSTI)

We report the first experimental demonstration of an optical quantum controlled-NOT gate without any path interference, where the two interacting path interferometers of the original proposals (Phys. Rev. A {\\bf 66}, 024308 (2001), Phys. Rev. A {\\bf 65}, 012314 (2002)) have been replaced by three partially polarizing beam splitters with suitable polarization dependent transmittances and reflectances. The performance of the device is evaluated using a recently proposed method (Phys. Rev. Lett. {\\bf 94}, 160504 (2005)), by which the quantum process fidelity and the entanglement capability can be estimated from the 32 measurement results of two classical truth tables, significantly less than the 256 measurement results required for full quantum tomography.

Okamoto, R; Takeuchi, S; Sasaki, K; Okamoto, Ryo; Hofmann, Holger F.; Takeuchi, Shigeki; Sasaki, Keiji

2005-01-01T23:59:59.000Z

353

Demonstration of an optical quantum controlled-NOT gate without path interference  

E-Print Network (OSTI)

We report the first experimental demonstration of an optical quantum controlled-NOT gate without any path interference, where the two interacting path interferometers of the original proposals (Phys. Rev. A {\\bf 66}, 024308 (2001), Phys. Rev. A {\\bf 65}, 012314 (2002)) have been replaced by three partially polarizing beam splitters with suitable polarization dependent transmittances and reflectances. The performance of the device is evaluated using a recently proposed method (Phys. Rev. Lett. {\\bf 94}, 160504 (2005)), by which the quantum process fidelity and the entanglement capability can be estimated from the 32 measurement results of two classical truth tables, significantly less than the 256 measurement results required for full quantum tomography.

Ryo Okamoto; Holger F. Hofmann; Shigeki Takeuchi; Keiji Sasaki

2005-06-30T23:59:59.000Z

354

Magnetic field generator  

DOE Patents (OSTI)

A magnetic field generating device provides a useful magnetic field within a specific retgion, while keeping nearby surrounding regions virtually field free. By placing an appropriate current density along a flux line of the source, the stray field effects of the generator may be contained. One current carrying structure may support a truncated cosine distribution, and it may be surrounded by a current structure which follows a flux line that would occur in a full coaxial double cosine distribution. Strong magnetic fields may be generated and contained using superconducting cables to approximate required current surfaces.

Krienin, Frank (Shoreham, NY)

1990-01-01T23:59:59.000Z

355

Modern generator protection systems  

SciTech Connect

The special problems of the protection of generating stations with large machines connected to large integrated networks are presented. The coordination between the protective relays and tripping functions and the reliability of the protection scheme are important considerations in modern plants. Primary and backup protective functions, the applications, and their divisions into fault detection and ''fault prevention'' categories are considered. Testing and maintenance of the generator protection system including automatic calibration testing equipment is also discussed. The concept of the generator protection as a completely coordinated system and its realization with solid state protective relays is also presented. 9 refs.

Pencinger, C.J.

1981-01-01T23:59:59.000Z

356

PULSE SYNTHESIZING GENERATOR  

DOE Patents (OSTI)

>An electronlc circuit for synthesizing electrical current pulses having very fast rise times includes several sinewave generators tuned to progressively higher harmonic frequencies with signal amplitudes and phases selectable according to the Fourier series of the waveform that is to be synthesized. Phase control is provided by periodically triggering the generators at precisely controlled times. The outputs of the generators are combined in a coaxial transmission line. Any frequency-dependent delays that occur in the transmission line can be readily compensated for so that the desired signal wave shape is obtained at the output of the line. (AEC)

Kerns, Q.A.

1963-08-01T23:59:59.000Z

357

As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.  

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

Automated Proximity Access at Gate 17 and Sector 30 Automated Proximity Access at Gate 17 and Sector 30 New SLAC ID badges with embedded RFID are used to activate these gates and for off-hours access at the main entrance off Sand Hill Road as well as Alpine Road (gates will be accessible 24/7) . New user badges include this proximity gate activation feature, but older photo IDs need to be updated. Users are advised to register, complete training and contact the User Research Administration (URA) office before arrival for beam time to help facilitate access. During the transition period, July 26-August 9, 2013 users can inform Security at Gate 17 that they are checking in and proceed to the URA office in Building 120; however, after August 9 th , users without a proximity activated ID need to stop at

358

generating | OpenEI  

Open Energy Info (EERE)

generating generating 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 9, and contains only the reference case. The dataset uses gigawatts. The data is broken down into power only, combined heat and power, cumulative planned additions, cumulative unplanned conditions, and cumulative retirements and total electric power sector capacity . Source EIA Date Released April 26th, 2011 (3 years ago) Date Updated Unknown Keywords 2011 AEO capacity consumption EIA Electricity generating Data application/vnd.ms-excel icon AEO2011: Electricity Generating Capacity- Reference Case (xls, 130.1 KiB) Quality Metrics Level of Review Peer Reviewed Comment

359

Scram signal generator  

DOE Patents (OSTI)

A scram signal generating circuit for nuclear reactor installations monitors a flow signal representing the flow rate of the liquid sodium coolant which is circulated through the reactor, and initiates reactor shutdown for a rapid variation in the flow signal, indicative of fuel motion. The scram signal generating circuit includes a long-term drift compensation circuit which processes the flow signal and generates an output signal representing the flow rate of the coolant. The output signal remains substantially unchanged for small variations in the flow signal, attributable to long term drift in the flow rate, but a rapid change in the flow signal, indicative of a fast flow variation, causes a corresponding change in the output signal. A comparator circuit compares the output signal with a reference signal, representing a given percentage of the steady state flow rate of the coolant, and generates a scram signal to initiate reactor shutdown when the output signal equals the reference signal.

Johanson, Edward W. (New Lenox, IL); Simms, Richard (Westmont, IL)

1981-01-01T23:59:59.000Z

360

Vector generator scan converter  

DOE Patents (OSTI)

High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O (input/output) channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardward for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold.

Moore, James M. (Livermore, CA); Leighton, James F. (Livermore, CA)

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Financing Distributed Generation  

DOE Green Energy (OSTI)

This paper introduces the engineer who is undertaking distributed generation projects to a wide range of financing options. Distributed generation systems (such as internal combustion engines, small gas turbines, fuel cells and photovoltaics) all require an initial investment, which is recovered over time through revenues or savings. An understanding of the cost of capital and financing structures helps the engineer develop realistic expectations and not be offended by the common requirements of financing organizations. This paper discusses several mechanisms for financing distributed generation projects: appropriations; debt (commercial bank loan); mortgage; home equity loan; limited partnership; vendor financing; general obligation bond; revenue bond; lease; Energy Savings Performance Contract; utility programs; chauffage (end-use purchase); and grants. The paper also discusses financial strategies for businesses focusing on distributed generation: venture capital; informal investors (''business angels''); bank and debt financing; and the stock market.

Walker, A.

2001-06-29T23:59:59.000Z

362

Micro Turbine Generator Program  

Science Conference Proceedings (OSTI)

A number of micro turbines generators have recently been announced as currently commercially available for sale to customers, such as end users, utilities, and energy service providers. Manufacturers and others are reporting certain performance capabilities ...

Stephanie L. Hamilton

2000-01-01T23:59:59.000Z

363

Geothermal Power Generation  

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

1 GEOTHERMAL POWER GENERATION A PRIMER ON LOW-TEMPERATURE, SMALL-SCALE APPLICATIONS by Kevin Rafferty Geo-Heat Center January 2000 REALITY CHECK Owners of low-temperature...

364

Next Generation Biomaterials  

Science Conference Proceedings (OSTI)

Apr 2, 2012 ... Characterization of Next-Generation Nickel-Titanium Rotary ... Manufacturing of Composite Fibrous Membranes for Biomedical and Energy Storage ... Prediction of the Stress Distribution and the Coating Delamination in...

365

Relativistic electron beam generator  

DOE Patents (OSTI)

A relativistic electron beam generator for laser media excitation is described. The device employs a diode type relativistic electron beam source having a cathode shape which provides a rectangular output beam with uniform current density.

Mooney, L.J.; Hyatt, H.M.

1975-11-11T23:59:59.000Z

366

Financing Distributed Generation  

SciTech Connect

This paper introduces the engineer who is undertaking distributed generation projects to a wide range of financing options. Distributed generation systems (such as internal combustion engines, small gas turbines, fuel cells and photovoltaics) all require an initial investment, which is recovered over time through revenues or savings. An understanding of the cost of capital and financing structures helps the engineer develop realistic expectations and not be offended by the common requirements of financing organizations. This paper discusses several mechanisms for financing distributed generation projects: appropriations; debt (commercial bank loan); mortgage; home equity loan; limited partnership; vendor financing; general obligation bond; revenue bond; lease; Energy Savings Performance Contract; utility programs; chauffage (end-use purchase); and grants. The paper also discusses financial strategies for businesses focusing on distributed generation: venture capital; informal investors (''business angels''); bank and debt financing; and the stock market.

Walker, A.

2001-06-29T23:59:59.000Z

367

Energy and Mass Generation  

E-Print Network (OSTI)

Modifications in the energy momentum dispersion laws due to a noncommutative geometry, have been considered in recent years. We examine the oscillations of extended objects in this perspective and find that there is now a "generation" of energy.

Burra G. Sidharth

2010-03-11T23:59:59.000Z

368

Biomass for Electricity Generation  

Reports and Publications (EIA)

This paper examines issues affecting the uses of biomass for electricity generation. The methodology used in the National Energy Modeling System to account for various types of biomass is discussed, and the underlying assumptions are explained.

Zia Haq

2002-07-01T23:59:59.000Z

369

Baroclinic Tsunami Generation  

Science Conference Proceedings (OSTI)

An analytical and experimental study of the baroclinic waves generated by a monopole dislocation of the sea floor is presented. Analytical results are based on a two-dimensional and linearized description of motion using a two-layer approximation ...

Joseph L. Hammack

1980-09-01T23:59:59.000Z

370

Local entropy generation analysis  

SciTech Connect

Second law analysis techniques have been widely used to evaluate the sources of irreversibility in components and systems of components but the evaluation of local sources of irreversibility in thermal processes has received little attention. While analytical procedures for evaluating local entropy generation have been developed, applications have been limited to fluid flows with analytical solutions for the velocity and temperature fields. The analysis of local entropy generation can be used to evaluate more complicated flows by including entropy generation calculations in a computational fluid dynamics (CFD) code. The research documented in this report consists of incorporating local entropy generation calculations in an existing CFD code and then using the code to evaluate the distribution of thermodynamic losses in two applications: an impinging jet and a magnetic heat pump. 22 refs., 13 figs., 9 tabs.

Drost, M.K.; White, M.D.

1991-02-01T23:59:59.000Z

371

Generation -IV Reactor Concepts  

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

Generation-IV Reactor Concepts Generation-IV Reactor Concepts Thomas H. Fanning Argonne National Laboratory 9700 South Cass Avenue Argonne, Illinois 60439, USA The Generation-IV International Forum (GIF) is a multi-national research and development (R&D) collaboration. The GIF pursues the development of advanced, next generation reactor technology with goals to improve: a) sustainability (effective fuel utilization and minimization of waste) b) economics (competitiveness with respect to other energy sources) c) safety and reliability (e.g., no need for offsite emergency response), and d) proliferation resistance and physical protection The GIF Technology Roadmap exercise selected six generic systems for further study: the Gas- cooled Fast Reactor (GFR), the Lead-cooled Fast Reactor (LFR), the Molten Salt Reactor (MSR),

372

Vector generator scan converter  

DOE Patents (OSTI)

High printing speeds for graphics data are achieved with a laser printer by transmitting compressed graphics data from a main processor over an I/O channel to a vector generator scan converter which reconstructs a full graphics image for input to the laser printer through a raster data input port. The vector generator scan converter includes a microprocessor with associated microcode memory containing a microcode instruction set, a working memory for storing compressed data, vector generator hardware for drawing a full graphic image from vector parameters calculated by the microprocessor, image buffer memory for storing the reconstructed graphics image and an output scanner for reading the graphics image data and inputting the data to the printer. The vector generator scan converter eliminates the bottleneck created by the I/O channel for transmitting graphics data from the main processor to the laser printer, and increases printer speed up to thirty fold. 7 figs.

Moore, J.M.; Leighton, J.F.

1988-02-05T23:59:59.000Z

373

Steam Generator Management Program  

Science Conference Proceedings (OSTI)

The 24th EPRI Steam Generator NDE Workshop took place in San Diego, California, July 1113, 2005. It covered one full day and two half days of presentations. Attendees included representatives from domestic and overseas nuclear utilities, nuclear steam supply system (NSSS) vendors, nondestructive evaluation (NDE) service and equipment organizations, research laboratories, and regulatory bodies. This annual workshop serves as a forum for NDE specialists to gather and discuss current steam generator NDE iss...

2005-12-08T23:59:59.000Z

374

Steam generator tube failures  

SciTech Connect

A review and summary of the available information on steam generator tubing failures and the impact of these failures on plant safety is presented. The following topics are covered: pressurized water reactor (PWR), Canadian deuterium uranium (CANDU) reactor, and Russian water moderated, water cooled energy reactor (VVER) steam generator degradation, PWR steam generator tube ruptures, the thermal-hydraulic response of a PWR plant with a faulted steam generator, the risk significance of steam generator tube rupture accidents, tubing inspection requirements and fitness-for-service criteria in various countries, and defect detection reliability and sizing accuracy. A significant number of steam generator tubes are defective and are removed from service or repaired each year. This wide spread damage has been caused by many diverse degradation mechanisms, some of which are difficult to detect and predict. In addition, spontaneous tube ruptures have occurred at the rate of about one every 2 years over the last 20 years, and incipient tube ruptures (tube failures usually identified with leak detection monitors just before rupture) have been occurring at the rate of about one per year. These ruptures have caused complex plant transients which have not always been easy for the reactor operators to control. Our analysis shows that if more than 15 tubes rupture during a main steam line break, the system response could lead to core melting. Although spontaneous and induced steam generator tube ruptures are small contributors to the total core damage frequency calculated in probabilistic risk assessments, they are risk significant because the radionuclides are likely to bypass the reactor containment building. The frequency of steam generator tube ruptures can be significantly reduced through appropriate and timely inspections and repairs or removal from service.

MacDonald, P.E.; Shah, V.N.; Ward, L.W.; Ellison, P.G.

1996-04-01T23:59:59.000Z

375

Electrical generating plant availability  

SciTech Connect

A discussion is given of actions that can improve availability, including the following: the meaning of power plant availability; The organization of the electric power industry; some general considerations of availability; the improvement of power plant availability--design factors, control of shipping and construction, maintenance, operating practices; sources of statistics on generating plant availability; effects of reducing forced outage rates; and comments by electric utilities on generating unit availability.

1975-05-01T23:59:59.000Z

376

Richard Gates  

Science Conference Proceedings (OSTI)

... NIST 1981 - 1987: Research Chemist, Tribochemistry Group, National Bureau of Standards 1978-1981: Chemist, Recycled Oil Program, National ...

2013-04-17T23:59:59.000Z

377

GATING CIRCUITS  

DOE Patents (OSTI)

Control circuits for vacuum tubes are described, and a binary counter having an improved trigger circuit is reported. The salient feature of the binary counter is the application of the input signal to the cathode of each of two vacuum tubes through separate capacitors and the connection of each cathode to ground through separate diodes. The control of the binary counter is achieved in this manner without special pulse shaping of the input signal. A further advantage of the circuit is the simplicity and minimum nuruber of components required, making its use particularly desirable in computer machines.

Merrill, L.C.

1958-10-14T23:59:59.000Z

378

Interactions of cyclic nucleotidegated channel subunits and protein tyrosine kinase probed with genistein  

E-Print Network (OSTI)

abstract The cGMP sensitivity of cyclic nucleotidegated (CNG) channels can be modulated by changes in phosphorylation catalyzed by protein tyrosine kinases (PTKs) and protein tyrosine phosphatases. Previously, we used genistein, a PTK inhibitor, to probe the interaction between PTKs and homomeric channels comprised of ? subunits (RET?) of rod photoreceptor CNG channels expressed in Xenopus oocytes. We showed that in addition to inhibiting phosphorylation, genistein triggers a noncatalytic interaction between PTKs and homomeric RET? channels that allosterically inhibits channel gating. Here, we show that native CNG channels from rods, cones, and olfactory receptor neurons also exhibit noncatalytic inhibition induced by genistein, suggesting that in each of these sensory cells, CNG channels are part of a regulatory complex that contains PTKs. Native CNG channels are heteromers, containing ? as well as ? subunits. To determine the contributions of ? and ? subunits to genistein inhibition, we compared the effect of genistein on native, homomeric (RET ? and OLF?), and heteromeric (RET???, OLF???, and OLF??RET?) CNG channels. We found that genistein only inhibits channels that contain either the RET ? or the OLF ? subunits. This finding, along with other observations about the maximal effect of genistein and the Hill coefficient of genistein inhibition, suggests that the RET ? and OLF ? subunits contain binding sites for the PTK, whereas RET ? and OLF ? subunits do not. key words: cyclic guanosine monophosphate protein tyrosine kinase photoreceptor olfactory receptor neuron

Elena Molokanova; Alexei Savchenko; Richard H. Kramer

2000-01-01T23:59:59.000Z

379

Effect of gate-driven spin resonance on the conductance of a one-dimensional quantum wire  

E-Print Network (OSTI)

We consider quasiballistic electron transmission in a one-dimensional quantum wire subject to both time-independent and periodic potentials of a finger gate that results in a coordinate- and time-dependent Rashba-type spin-orbit coupling. A spin-dependent conductance is calculated as a function of external constant magnetic field, the electric field frequency, and the potential strength. The results demonstrate the effect of the gate-driven electric dipole spin resonance in a transport phenomenon such as spin-flip electron transmission.

Almas F. Sadreev; E. Ya. Sherman

2013-10-10T23:59:59.000Z

380

Tuning the Gate Opening Pressure of Metal Organic Frameworks (MOFs) for the Selective Separation of Hydro-carbons  

E-Print Network (OSTI)

Separation of hydrocarbons is one of the most energy demanding processes. The need to develop materials for the selective adsorption of hydrocarbons, under reasonable conditions, is therefore of paramount importance. This work unveils unexpected hydrocarbon selectivity in a flexible Metal Organic Framework (MOF), based on differences in their gate opening pressure. We show selectivity dependence on both chain length and specific framework-gas interaction. Combining Raman spectroscopy and theoretical van der Waals Density Functional (vdW-DF) calculations, the separation mechanisms governing this unexpected gate opening behavior are revealed.

Nijem, Nour; Canepa, Pieremanuele; Marti, Anne; Balkus,, Kenneth J; Thonhauser, T; Li, Jing; Chabal, Yves J; 10.1021/ja305754f

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

MHD Generating system  

DOE Patents (OSTI)

According to the present invention, coal combustion gas is the primary working fluid and copper or a copper alloy is the electrodynamic fluid in the MHD generator, thereby eliminating the heat exchangers between the combustor and the liquid-metal MHD working fluids, allowing the use of a conventional coalfired steam bottoming plant, and making the plant simpler, more efficient and cheaper. In operation, the gas and liquid are combined in a mixer and the resulting two-phase mixture enters the MHD generator. The MHD generator acts as a turbine and electric generator in one unit wherein the gas expands, drives the liquid across the magnetic field and thus generates electrical power. The gas and liquid are separated, and the available energy in the gas is recovered before the gas is exhausted to the atmosphere. Where the combustion gas contains sulfur, oxygen is bubbled through a side loop to remove sulfur therefrom as a concentrated stream of sulfur dioxide. The combustor is operated substoichiometrically to control the oxide level in the copper.

Petrick, Michael (Joliet, IL); Pierson, Edward S. (Chicago, IL); Schreiner, Felix (Mokena, IL)

1980-01-01T23:59:59.000Z

382

MCNP LWR Core Generator  

Science Conference Proceedings (OSTI)

The reactor core input generator allows for MCNP input files to be tailored to design specifications and generated in seconds. Full reactor models can now easily be created by specifying a small set of parameters and generating an MCNP input for a full reactor core. Axial zoning of the core will allow for density variation in the fuel and moderator, with pin-by-pin fidelity, so that BWR cores can more accurately be modeled. LWR core work in progress: (1) Reflectivity option for specifying 1/4, 1/2, or full core simulation; (2) Axial zoning for moderator densities that vary with height; (3) Generating multiple types of assemblies for different fuel enrichments; and (4) Parameters for specifying BWR box walls. Fuel pin work in progress: (1) Radial and azimuthal zoning for generating further unique materials in fuel rods; (2) Options for specifying different types of fuel for MOX or multiple burn assemblies; (3) Additional options for replacing fuel rods with burnable poison rods; and (4) Control rod/blade modeling.

Fischer, Noah A. [Los Alamos National Laboratory

2012-08-14T23:59:59.000Z

383

Superconducting thermoelectric generator  

DOE Patents (OSTI)

Thermoelectricity is produced by applying a temperature differential to dissimilar electrically conducting or semiconducting materials, thereby producing a voltage that is proportional to the temperature difference. Thermoelectric generators use this effect to directly convert heat into electricity; however, presently-known generators have low efficiencies due to the production of high currents which in turn cause large resistive heating losses. Some thermoelectric generators operate at efficiencies between 4% and 7% in the 800{degrees} to 1200{degrees}C range. According to its major aspects and bradly stated, the present invention is an apparatus and method for producing electricity from heat. In particular, the invention is a thermoelectric generator that juxtaposes a superconducting material and a semiconducting material - so that the superconducting and the semiconducting materials touch - to convert heat energy into electrical energy without resistive losses in the temperature range below the critical temperature of the superconducting material. Preferably, an array of superconducting material is encased in one of several possible configurations within a second material having a high thermal conductivity, preferably a semiconductor, to form a thermoelectric generator.

Metzger, J.D.; El-Genk, M.S.

1994-01-01T23:59:59.000Z

384

Carbon-free generation  

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

Carbon-free generation Carbon-free generation Carbon-free central generation of electricity, either through fossil fuel combustion with carbon dioxide capture and storage or development of renewable sources such as solar, wind, and/or nuclear power, is key to our future energy portfolio. Brookhaven also provides tools and techniques for studying geological carbon dioxide sequestration and analyzing safety issues for nuclear systems. Our nation faces grand challenges: finding alternative and cleaner energy sources and improving efficiency to meet our exponentially growing energy needs. Researchers at Brookhaven National Laboratory are poised to meet these challenges with basic and applied research programs aimed at advancing the effective use of renewable energy through improved conversion,

385

Thermoacoustic magnetohydrodynamic electrical generator  

DOE Patents (OSTI)

A thermoacoustic magnetohydrodynamic electrical generator includes an intrinsically irreversible thermoacoustic heat engine coupled to a magnetohydrodynamic electrical generator. The heat engine includes an electrically conductive liquid metal as the working fluid and includes two heat exchange and thermoacoustic structure assemblies which drive the liquid in a push-pull arrangement to cause the liquid metal to oscillate at a resonant acoustic frequency on the order of 1000 Hz. The engine is positioned in the field of a magnet and is oriented such that the liquid metal oscillates in a direction orthogonal to the field of the magnet, whereby an alternating electrical potential is generated in the liquid metal. Low-loss, low-inductance electrical conductors electrically connected to opposite sides of the liquid metal conduct an output signal to a transformer adapted to convert the low-voltage, high-current output signal to a more usable higher voltage, lower current signal.

Wheatley, J.C.; Swift, G.W.; Migliori, A.

1984-11-16T23:59:59.000Z

386

SLCA/IP Hydro Generation Estimates Month Forecast Generation  

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

42014 15:46 SLCAIP Hydro Generation Estimates Month Forecast Generation less losses (kWh) Less Proj. Use (kWh) Net Generation (kWh) SHP Deliveries (kWh) Firming Purchases (kWh)...

387

SLCA/IP Hydro Generation Estimates Month Forecast Generation  

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

13 16:39 SLCAIP Hydro Generation Estimates Month Forecast Generation less losses (kWh) Less Proj. Use (kWh) Net Generation (kWh) SHP Deliveries (kWh) Firming Purchases (kWh)...

388

Next Generation Rooftop Unit  

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

Next Generation Rooftop Unit - Next Generation Rooftop Unit - CRADA Bo Shen Oak Ridge National Laboratory shenb@ornl.gov; 865-574-5745 April 3, 2013 ET R&D project in support of DOE/BTO Goal of 50% Reduction in Building Energy Use by 2030. CRADA project with Trane TOP US Commercial HVAC Equipment OEM 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: half of all US commercial floor space cooled by packaged AC units, consumes more than 1.0 Quad source energy/year; highly efficient systems needed

389

External split field generator  

DOE Patents (OSTI)

A generator includes a coil disposed about a core. A first stationary magnetic field source may be disposed on a first end portion of the core and a second stationary magnetic field source may be disposed on a second end portion of core. The first and second stationary magnetic field sources apply a stationary magnetic field to the coil. An external magnetic field source may be disposed outside the coil to apply a moving magnetic field to the coil. Electrical energy is generated in response to an interaction between the coil, the moving magnetic field, and the stationary magnetic field.

Thundat, Thomas George (Knoxville, TN); Van Neste, Charles W. (Kingston, TN); Vass, Arpad Alexander (Oak Ridge, TN)

2012-02-21T23:59:59.000Z

390

Next Generation Rooftop Unit  

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

Next Generation Rooftop Unit - Next Generation Rooftop Unit - CRADA Bo Shen Oak Ridge National Laboratory shenb@ornl.gov; 865-574-5745 April 3, 2013 ET R&D project in support of DOE/BTO Goal of 50% Reduction in Building Energy Use by 2030. CRADA project with Trane TOP US Commercial HVAC Equipment OEM 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: half of all US commercial floor space cooled by packaged AC units, consumes more than 1.0 Quad source energy/year; highly efficient systems needed

391

STEAM GENERATOR PRELIMINARY DESIGN  

SciTech Connect

A conceptual study on design of sodium-cooled reactor steam generators was conducted. Included is a detailed description of the preliminary design and analysis, based on the use of known materials and existing methods of fabrication. (See also APAE-41 Vols. I and III.) (J.R.D.)

1959-02-28T23:59:59.000Z

392

Photovoltaic Power Generation  

E-Print Network (OSTI)

This report is an overview of photovoltaic power generation. The purpose of the report is to provide the reader with a general understanding of photovoltaic power generation and how PV technology can be practically applied. There is a brief discussion of early research and a description of how photovoltaic cells convert sunlight to electricity. The report covers concentrating collectors, flat-plate collectors, thin-film technology, and building-integrated systems. The discussion of photovoltaic cell types includes single-crystal, poly-crystalline, and thin-film materials. The report covers progress in improving cell efficiencies, reducing manufacturing cost, and finding economic applications of photovoltaic technology. Lists of major manufacturers and organizations are included, along with a discussion of market trends and projections. The conclusion is that photovoltaic power generation is still more costly than conventional systems in general. However, large variations in cost of conventional electrical power, and other factors, such as cost of distribution, create situations in which the use of PV power is economically sound. PV power is used in remote applications such as communications, homes and villages in developing countries, water pumping, camping, and boating. Gridconnected applications such as electric utility generating facilities and residential rooftop installations make up a smaller but more rapidly expanding segment of PV use. Furthermore, as technological advances narrow the cost gap, more applications are becoming economically feasible at an accelerating rate. iii TABLE OF CONTENTS LIST OF TABLES AND FIGURES ...................................................................................v

Tom Penick; Gale Greenleaf Instructor; Thomas Penick; Bill Louk; Bill Louk

1998-01-01T23:59:59.000Z

393

Generating query substitutions  

Science Conference Proceedings (OSTI)

We introduce the notion of query substitution, that is, generating a new query to replace a user's original search query. Our technique uses modifications based on typical substitutions web searchers make to their queries. In this way the new query is ... Keywords: paraphrasing, query rewriting, query substitution, sponsored search

Rosie Jones; Benjamin Rey; Omid Madani; Wiley Greiner

2006-05-01T23:59:59.000Z

394

Canonizable partial order generators  

Science Conference Proceedings (OSTI)

In a previous work we introduced slice graphs as a way to specify both infinite languages of directed acyclic graphs (DAGs) and infinite languages of partial orders. Therein we focused on the study of Hasse diagram generators, i.e., slice graphs that ... Keywords: automata, canonization, partial orders

Mateus de Oliveira Oliveira

2012-03-01T23:59:59.000Z

395

Generating concise association rules  

Science Conference Proceedings (OSTI)

Association rule mining has made many achievements in the area of knowledge discovery. However, the quality of the extracted association rules is a big concern. One problem with the quality of the extracted association rules is the huge size of the extracted ... Keywords: closed itemsets, generators, redundant association rules

Yue Xu; Yuefeng Li

2007-11-01T23:59:59.000Z

396

Iridium 191-M generator  

DOE Patents (OSTI)

Potassium osmate, of the formula K.sub.2 Os O.sub.2 (OH).sub.4), used to make a column for the generation of Ir-191 m, which is used in first pass angiography to detect cardiac defects in patients.

Treves, Salvador (Newton, MA); Cheng, Chris C. (Brookline, MA)

1988-03-08T23:59:59.000Z

397

Gaussian random number generators  

Science Conference Proceedings (OSTI)

Rapid generation of high quality Gaussian random numbers is a key capability for simulations across a wide range of disciplines. Advances in computing have brought the power to conduct simulations with very large numbers of random numbers and with it, ... Keywords: Gaussian, Random numbers, normal, simulation

David B. Thomas; Wayne Luk; Philip H.W. Leong; John D. Villasenor

2007-11-01T23:59:59.000Z

398

Fuel cell generator  

DOE Patents (OSTI)

High temperature solid oxide electrolyte fuel cell generators which allow controlled leakage among plural chambers in a sealed housing. Depleted oxidant and fuel are directly reacted in one chamber to combust remaining fuel and preheat incoming reactants. The cells are preferably electrically arranged in a series-parallel configuration.

Isenberg, Arnold O. (Forest Hills, PA)

1983-01-01T23:59:59.000Z

399

"The gate-keepers in a changing world: integrating microbial diversity and dynamics with global change biology."  

Science Conference Proceedings (OSTI)

Microorganisms (Bacteria, Archaea and Fungi) are the gate-keepers of many ecosystem-scale biogeochemical cycles. Although there have been measurable changes in ecosystem function due to human activities such as greenhouse gas production, nutrient loading, land-use change, and water consumption, few studies have connected microbial community dynamics with these changes in ecosystem function. Specifically, very little is known about how global changes will induce important functional changes in microbial biodiversity. Even less is known about how microbial functional changes could alter rates of nutrient cycling or whether microbial communities have enough functional redundancy that changes will have little impact on overall process rates. The proposed symposium will provide an overview of this emerging research area, with emphasis on linking the microorganisms directly to important ecological functions under the influence of global change dynamics. The session will include both broad overviews as well as specific case-studies by researchers who examine microbial communities from a variety of taxonomic levels and from various environments. The session will begin broadly, with speakers discussing how microbial communities may inform ecosystem-scale global change studies, and help to make microbial ecological knowledge more tangible for a broad range of ecologists. The session will continue with case studies of microbial community information informing process in global change experiments. Finally, the session will close with speakers discussing how microbial community information might fit into global change models, and what types of information are useful for future studies. We have requested that speakers particularly incorporate their views on what types of microbial data is useful and informative in the context of larger ecosystem processes. We foresee that this session could serve as a focal point for global change microbial ecologists to meet and discuss their field at the ESA 2010 General Meeting. However, more importantly, the session will provide for a broad range of interests for ecosystem ecologists, theoretical ecologists, and global change biologists, and will foster communication between these groups to generate informative microbial community data in the future.

Jessica L.M. Gutknecht and Kathryn M. Docherty

2011-11-01T23:59:59.000Z

400

Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. McCluskey  

E-Print Network (OSTI)

Test Set Reordering Using the Gate Exhaustive Test Metric Kyoung Youn Cho and Edward J. Mc kycho@crc.stanford.edu Abstract When a test set size is larger than desired, some patterns must be dropped. This paper presents a systematic method to reduce test set size; the method reorders a test set

Stanford University

Note: This page contains sample records for the topic "dave gates generating" 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

Graduate Automotive Technology Education (GATE) Program: Center of Automotive Technology Excellence in Advanced Hybrid Vehicle Technology at West Virginia University  

DOE Green Energy (OSTI)

This report summarizes the technical and educational achievements of the Graduate Automotive Technology Education (GATE) Center at West Virginia University (WVU), which was created to emphasize Advanced Hybrid Vehicle Technology. The Center has supported the graduate studies of 17 students in the Department of Mechanical and Aerospace Engineering and the Lane Department of Computer Science and Electrical Engineering. These students have addressed topics such as hybrid modeling, construction of a hybrid sport utility vehicle (in conjunction with the FutureTruck program), a MEMS-based sensor, on-board data acquisition for hybrid design optimization, linear engine design and engine emissions. Courses have been developed in Hybrid Vehicle Design, Mobile Source Powerplants, Advanced Vehicle Propulsion, Power Electronics for Automotive Applications and Sensors for Automotive Applications, and have been responsible for 396 hours of graduate student coursework. The GATE program also enhanced the WVU participation in the U.S. Department of Energy Student Design Competitions, in particular FutureTruck and Challenge X. The GATE support for hybrid vehicle technology enhanced understanding of hybrid vehicle design and testing at WVU and encouraged the development of a research agenda in heavy-duty hybrid vehicles. As a result, WVU has now completed three programs in hybrid transit bus emissions characterization, and WVU faculty are leading the Transportation Research Board effort to define life cycle costs for hybrid transit buses. Research and enrollment records show that approximately 100 graduate students have benefited substantially from the hybrid vehicle GATE program at WVU.

Nigle N. Clark

2006-12-31T23:59:59.000Z

402

Influence of post deposition annealing on Y2O3-gated GaAs MOS capacitors and their reliability issues  

Science Conference Proceedings (OSTI)

The feasibility of employing yttrium oxide (Y"2O"3) as high-k gate dielectrics for GaAs metal-oxide-semiconductor (MOS) devices has been investigated. MOS capacitors were fabricated using RF-sputtered deposited Y"2O"3 films on NH"4OH treated n-GaAs substrate. ... Keywords: GaAs, TDDB, Trapping centroid, Y2O3

P. S. Das; A. Biswas

2011-03-01T23:59:59.000Z

403

Geyser-1: a MIPS R3000 CPU core with fine-grained run-time power gating  

Science Conference Proceedings (OSTI)

Geyser-1 is a MIPS CPU which provides a fine-grained run-time power gating (PG) controlled by instructions. Unlike traditional PGs, it uses special standard cells in which the virtual ground (VGND) is separated from the real ground, and a certain number ...

D. Ikebuchi; N. Seki; Y. Kojima; M. Kamata; L. Zhao; H. Amano; T. Shirai; S. Koyama; T. Hashida; Y. Umahashi; H. Masuda; K. Usami; S. Takeda; H. Nakamura; M. Namiki; M. Kondo

2010-01-01T23:59:59.000Z

404

Analysis of Schottky gate electron tunneling in polarization induced AlGaN/GaN high electron mobility transistors  

Science Conference Proceedings (OSTI)

( gate=nickel)/(barrier=GaN/Al (y) Ga (1?y) N)/(buffer=GaN)/(substrate=SiC ) polarizationinduced high electron mobility transistors (PI-HEMTs) show promise for ultrahigh power microwave amplification. The polarization fields in these Ga-face

Lester F. Eastman

1999-01-01T23:59:59.000Z

405

Analysis of the area-delay performance of hybrid nanoelectronic memory cores used in field programmable gate arrays  

Science Conference Proceedings (OSTI)

In this paper, an area-delay metric (AT) of hybrid memristive/CMOS memory architectures is discussed. The proposed memory circuit can be used as a lookup table in field programmable gate arrays (FPGAs) and is modeled by a passive nanoelectronic crossbar ... Keywords: electrochemical metallization, hybrid circuit, nanoelectronics, resistive switches, scaling

Qin Wang; Arne Heittmann; Tobias G. Noll

2013-05-01T23:59:59.000Z

406

Next-Generation Photovoltaic Technologies  

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

Next-Generation Photovoltaic Technologies Next-Generation Photovoltaic Technologies Print Monday, 06 February 2012 15:48 Organic solar cells based on the polymerfullerene bulk...

407

Recommendation for Cryptographic Key Generation  

Science Conference Proceedings (OSTI)

... 100 Bureau Drive (Mail Stop 8930) Gaithersburg ... Output of a Random Bit Generator ..... ... 7.1 The Direct Generation of Symmetric ...

2013-04-17T23:59:59.000Z

408

Macquarie Generation | Open Energy Information  

Open Energy Info (EERE)

search Name Macquarie Generation Place New South Wales, Australia Zip 2299 Sector Hydro, Solar, Wind energy Product Australian state-owned on-grid generator, mainly using...

409

Posters Single-Column Model and Cumulus Ensemble Model Simulations of GATE Data  

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

3 3 Posters Single-Column Model and Cumulus Ensemble Model Simulations of GATE Data D. A. Randall and K.-M Xu Colorado State University Department of Atmospheric Science Fort Collins, Colorado Introduction Our project for the Atmospheric Radiation Measurement (ARM) Program consists of developing and demonstrating improved cloud formation parameterizations using a single-column model (SCM), a cumulus ensemble model (CEM), and ARM data. These two models can be driven with large-scale forcing (e.g., vertical motion) as observed in ARM. Each model produces a field of clouds and the associated radiation and precipitation fields. The SCM does so through its physical parameterizations, while the CEM does so by directly simulating convective cloud circulations. The improved parameterizations tested in this way will be

410

Precipitation Processes During ARM (1997), TOGA COARE (1992), GATE (1974), SCSMEX (1998), and KWAJEX (1999): Con...  

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

Precipitation Processes During ARM (1997), TOGA Precipitation Processes During ARM (1997), TOGA COARE (1992), GATE (1974), SCSMEX (1998), and KWAJEX (1999): Consistent 2D and 3D Cloud Resolving Model Simulations W.-K Tao, C.-L. Shie, J. Simpson, D. Starr, D. Johnson, and Y. Sud Mesoscale Atmospheric Process Branch (Code 912) Laboratory for Atmospheres National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland Introduction A basic characteristic of cloud-resolving models (CRMs) is that their governing equations are non- hydrostatic since the vertical and horizontal scales of convection are similar. Such models are also necessary in order to allow gravity waves, such as those triggered by clouds, to be resolved explicitly. CRMs use sophisticated and physically realistic parameterizations of cloud microphysical processes

411

Individual Flip-Flops with Gated Clocks for Low Power Datapaths  

E-Print Network (OSTI)

Energy consumption has become one of the important factors in digital systems, because of the requirement to dissipate this energy in high-density circuits and to extend the battery life in portable systems such as devices with wireless communication capabilities. Flip-flops are one of the most energyconsuming components of digital circuits. This paper presents techniques to reduce energy consumption by individually deactivating the clock when flip-flops do not have to change their value. Flip-flop structures are proposed and selection criteria given to obtain minimum energy consumption. The structures have been evaluated using energy models and validated by switch-level simulations. For the applications considered, significant energy reductions are achieved. Index Terms---Flip-flop energy model, gated clocks, low power datapaths. I.

Tomas Lang Enric; Low Power Datapaths

1997-01-01T23:59:59.000Z

412

Ultrafast control of nuclear spins using only microwave pulses: towards switchable solid-state quantum gates  

E-Print Network (OSTI)

We demonstrate the control of the alpha-proton nuclear spin, I=1/2, coupled to the stable radical CH(COOH)2, S=1/2, in a gamma-irradiated malonic acid single crystal using only microwave pulses. We show that, depending on the state of the electron spin mS=+/-1/2, the nuclear spin can be locked in a desired state or oscillate between mI=+1/2 and mI=-1/2 on the nanosecond time scale. This approach provides a fast and efficient way of controlling nuclear spin qubits and also enables the design of switchable spin-based quantum gates by addressing only the electron spin.

George Mitrikas; Yiannis Sanakis; Georgios Papavassiliou

2009-10-02T23:59:59.000Z

413

A digital optical phase-locked loop for diode lasers based on field programmable gate array  

Science Conference Proceedings (OSTI)

We have designed and implemented a highly digital optical phase-locked loop (OPLL) for diode lasers in atom interferometry. The three parts of controlling circuit in this OPLL, including phase and frequency detector (PFD), loop filter and proportional integral derivative (PID) controller, are implemented in a single field programmable gate array chip. A structure type compatible with the model MAX9382/MCH12140 is chosen for PFD and pipeline and parallelism technology have been adapted in PID controller. Especially, high speed clock and twisted ring counter have been integrated in the most crucial part, the loop filter. This OPLL has the narrow beat note line width below 1 Hz, residual mean-square phase error of 0.14 rad{sup 2} and transition time of 100 {mu}s under 10 MHz frequency step. A main innovation of this design is the completely digitalization of the whole controlling circuit in OPLL for diode lasers.

Xu Zhouxiang; Zhang Xian; Huang Kaikai; Lu Xuanhui [Physics Department, Zhejiang University, Hangzhou, 310027 (China)

2012-09-15T23:59:59.000Z

414

A New Gated X-Ray Detector for the Orion Laser Facility  

Science Conference Proceedings (OSTI)

Gated X-Ray Detectors (GXD) are considered the work-horse target diagnostic of the laser based inertial confinement fusion (ICF) program. Recently, Los Alamos National Laboratory (LANL) has constructed three new GXDs for the Orion laser facility at the Atomic Weapons Establishment (AWE) in the United Kingdom. What sets these three new instruments apart from the what has previously been constructed for the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) is: improvements in detector head microwave transmission lines, solid state embedded hard drive and updated control software, and lighter air box design and other incremental mechanical improvements. In this paper we will present the latest GXD design enhancements and sample calibration data taken on the Trident laser facility at Los Alamos National Laboratory using the newly constructed instruments.

Clark, David D. [Los Alamos National Laboratory; Aragonez, Robert J. [Los Alamos National Laboratory; Archuleta, Thomas N. [Los Alamos National Laboratory; Fatherley, Valerie E. [Los Alamos National Laboratory; Hsu, Albert H. [Los Alamos National Laboratory; Jorgenson, H. J. [Los Alamos National Laboratory; Mares, Danielle [Los Alamos National Laboratory; Oertel, John A. [Los Alamos National Laboratory; Oades, Kevin [Atomic Weapons Establishment; Kemshall, Paul [Atomic Weapons Establishment; Thomas, Philip [Atomic Weapons Establishment; Young, Trevor [Atomic Weapons Establishment; Pederson, Neal [VI Control Systems

2012-08-08T23:59:59.000Z

415

A Strained Organic Field-Effect-Transistor with a Gate-Tunable Superconducting Channel  

E-Print Network (OSTI)

In state-of-the-art silicon devices, mobility of the carrier is enhanced by the lattice strain from the back substrate. Such an extra control of device performance is significant in realizing high performance computing and should be valid for electric-field-induced superconducting devices, too. However, so far, the carrier density is the sole parameter for field-induced superconducting interfaces. Here we show an active organic superconducting field-effect-transistor whose lattice is modulated by the strain from the substrate. The soft organic lattice allows tuning of the strain by a choice of the back substrate to make an induced superconducting state accessible at low temperature with a paraelectric solid gate. An active three terminal Josephson junction device thus realized is useful both in advanced computing and in elucidating a direct connection between filling-controlled and bandwidth-controlled superconducting phases in correlated materials.

Hiroshi M. Yamamoto; Masaki Nakano; Masayuki Suda; Yoshihiro Iwasa; Masashi Kawasaki; Reizo Kato

2013-09-02T23:59:59.000Z

416

The accelerated site technology deployment program presents the segmented gate system  

Science Conference Proceedings (OSTI)

The Department of Energy (DOE) is working to accelerate the acceptance and application of innovative technologies that improve the way the nation manages its environmental remediation problems. The DOE Office of Science and Technology established the Accelerated Site Technology Deployment Program (ASTD) to help accelerate the acceptance and implementation of new and innovative soil and ground water remediation technologies. Coordinated by the Department of Energy's Idaho Office, the ASTD Program reduces many of the classic barriers to the deployment of new technologies by involving government, industry, and regulatory agencies in the assessment, implementation, and validation of innovative technologies. The paper uses the example of the Segmented Gate System (SGS) to illustrate how the ASTD program works. The SGS was used to cost effectively separate clean and contaminated soil for four different radionuclides: plutonium, uranium, thorium, and cesium. Based on those results, it has been proposed to use the SGS at seven other DOE sites across the country.

PATTESON,RAYMOND; MAYNOR,DOUG; CALLAN,CONNIE

2000-02-24T23:59:59.000Z

417

Enhancing the W State Quantum Network Fusion Process with A Single Fredkin Gate  

E-Print Network (OSTI)

Integrating a single Fredkin (controlled swap) gate to the previously introduced W state fusion mechanism (Ozdemir et al, N. J. Phys. 13, 103003, 2011) and using an ancillary photon, we increase the size of the fused W states and essentially, we improve the success probability of the fusion process in a promising way for a possible deterministic W state fusion mechanism. Besides fusing arbitrary size W states, our setup can also fuse Bell states to create W states with a success probability 3/4 which is much higher than the previous works. Therefore using only this setup, it is now possible to start with Bell pairs to create and expand arbitrary size W states. Since higher probability of success implies a lower cost of resource in terms of the number of the states spent to achieve a target size, our setup gives rise to more cost-efficient scenarios.

Sinan Bugu; Can Yesilyurt; Fatih Ozaydin

2013-03-16T23:59:59.000Z

418

GASIFICATION FOR DISTRIBUTED GENERATION  

DOE Green Energy (OSTI)

A recent emphasis in gasification technology development has been directed toward reduced-scale gasifier systems for distributed generation at remote sites. The domestic distributed power generation market over the next decade is expected to be 5-6 gigawatts per year. The global increase is expected at 20 gigawatts over the next decade. The economics of gasification for distributed power generation are significantly improved when fuel transport is minimized. Until recently, gasification technology has been synonymous with coal conversion. Presently, however, interest centers on providing clean-burning fuel to remote sites that are not necessarily near coal supplies but have sufficient alternative carbonaceous material to feed a small gasifier. Gasifiers up to 50 MW are of current interest, with emphasis on those of 5-MW generating capacity. Internal combustion engines offer a more robust system for utilizing the fuel gas, while fuel cells and microturbines offer higher electric conversion efficiencies. The initial focus of this multiyear effort was on internal combustion engines and microturbines as more realistic near-term options for distributed generation. In this project, we studied emerging gasification technologies that can provide gas from regionally available feedstock as fuel to power generators under 30 MW in a distributed generation setting. Larger-scale gasification, primarily coal-fed, has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries. Commercial-scale gasification activities are under way at 113 sites in 22 countries in North and South America, Europe, Asia, Africa, and Australia, according to the Gasification Technologies Council. Gasification studies were carried out on alfalfa, black liquor (a high-sodium waste from the pulp industry), cow manure, and willow on the laboratory scale and on alfalfa, black liquor, and willow on the bench scale. Initial parametric tests evaluated through reactivity and product composition were carried out on thermogravimetric analysis (TGA) equipment. These tests were evaluated and then followed by bench-scale studies at 1123 K using an integrated bench-scale fluidized-bed gasifier (IBG) which can be operated in the semicontinuous batch mode. Products from tests were solid (ash), liquid (tar), and gas. Tar was separated on an open chromatographic column. Analysis of the gas product was carried out using on-line Fourier transform infrared spectroscopy (FT-IR). For selected tests, gas was collected periodically and analyzed using a refinery gas analyzer GC (gas chromatograph). The solid product was not extensively analyzed. This report is a part of a search into emerging gasification technologies that can provide power under 30 MW in a distributed generation setting. Larger-scale gasification has been used commercially for more than 50 years to produce clean synthesis gas for the refining, chemical, and power industries, and it is probable that scaled-down applications for use in remote areas will become viable. The appendix to this report contains a list, description, and sources of currently available gasification technologies that could be or are being commercially applied for distributed generation. This list was gathered from current sources and provides information about the supplier, the relative size range, and the status of the technology.

Ronald C. Timpe; Michael D. Mann; Darren D. Schmidt

2000-05-01T23:59:59.000Z

419

Assessment and Evaluation of Next Generation HVDC Technologies  

Science Conference Proceedings (OSTI)

As an established technology for bulk power transmission, high-voltage direct current (HVDC) power transmission is being used worldwide, and more than 100 schemes are operating at present. Most existing HVDC systems use conventional self-commutated converter technology using thyristors. However, advances in voltage sourced converter (VSC) technologies and power electronic devices such as gate turn offs (GTOs), insulated gate bipolar transistors (IGBTs), and integrated gate commutated thyristors (IGCTs) w...

2008-12-22T23:59:59.000Z

420

Characterization of B2H6 Plasma Doping for Converted p+ Poly-Si Gate  

SciTech Connect

We have investigated the characteristics of B2H6 plasma doping (PLAD) process used to convert the n+ doped poly-Si gate to the p+ poly-Si gate for pMOS. The throughput of the PLAD process is much higher than a conventional beam line implantation process at low energy and high dose ranges. The B2H6 plasma counter-doping on the n+ poly-Si were performed in the energy range of 5kV {approx} 9kV and dose of {approx}E16 number sign /cm2. The B2H6 Plasma doped poly-Si layers were characterized by TDS, SIMS, AFM, and TEM.The TDS analysis showed hydrogen desorption from the B2H6 plasma doped p+ poly-Si layer at a low temperature. The surface concentration of PLAD doped boron was much higher compared to the conventional beam line implantation. However, a serious loss of surface dopant was also observed during photoresist strip and post cleaning. The surface dopant loss could be suppressed by 10% with optimization of the cleaning condition, leading to improve characteristics of PLAD doped p+ poly-Si pMOS, compared to the beam line implantation. Moreover, flat band voltage (VFB) shift was not observed in the C-V curves and there was no significant difference in I-V characteristics between PLAD and the conventional ion implantation. Deeper and higher dopant profile will be helpful to decrease required dose gap between PLAD and beam line implantation.

Oh, Jae-Geun; Lee, J. K.; Hwang, S. H.; Cho, H. J.; Sohn, Y. S.; Sheen, D. S.; Pyi, S. H. [Hynix Semiconductor Inc., San 136-1 Ami-ri, Bubal-eub, Ichon-si, Kyoungki-do, 467-701 (Korea, Republic of); Lee, S. W.; Hahn, S. H. [Varian Korea Ltd., 433-1 Mogok-dong Pyeongtaek-si Kyoungki-do 459-040 (Korea, Republic of); Jeon, Y. B.; Fang, Z.; Singh, V. [Varian Semiconductor Equipment Associates Incorporate, 35 Dory Road, Gloucester, MA 01930 (United States)

2006-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Fast fall-time ion beam in neutron generators  

... such that gating the beamlets can be done with low voltage and ... some time to measure the fissile content of nuclear waste ... current level) ...

422

Siemens Power Generation, Inc.  

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

2005 Pittsburgh Coal Conference 2005 Pittsburgh Coal Conference Siemens Power Generation, Inc. Page 1 of 10 © Siemens Power Generation, Inc., All Rights Reserved Development of a Catalytic Combustor for Fuel Flexible Turbines W. R. Laster Siemens Westinghouse Power Corporation Abstract Siemens has been working on a catalytic combustor for natural gas operation for several years using the Rich Catalytic Lean (RCL TM ) design. The design has been shown to produce low NOx emissions on natural gas operation. By operating the catalyst section fuel rich, the design shows considerable promise for robust operation over a wide range of fuel compositions including syngas. Under the sponsorship of the U. S. Department of Energy' s National Energy Technology Laboratory, Siemens Westinghouse is conducting a three year

423

Generation of energy  

SciTech Connect

A method of generating energy which comprises utilizing relatively lower temperature available heat to effect partial distillation of at least portion of a multicomponent working fluid stream at an intermediate pressure to generate working fluid fractions of differing compositions. The fractions are used to produce at least one main rich solution which is relatively enriched with respect to the lower boiling component, and to produce at least one lean solution which is relatively improverished with respect to the lower boiling component. The pressure of the main rich solution is increased whereafter it is evaporated to produce a charged gaseous main working fluid. The main working fluid is expanded to a low pressure level to release energy. The spent low pressure level working fluid is condensed in a main absorption stage by dissolving with cooling in the lean solution to regenerate an initial working fluid for reuse.

Kalina, A. I.

1984-12-25T23:59:59.000Z

424

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.

Davies, John P. (Idaho Falls, ID); Larson, Ronald A. (Idaho Falls, ID); Goodrich, Lorenzo D. (Shelley, ID); Hall, Harold J. (Idaho Falls, ID); Stoddard, Billy D. (Idaho Falls, ID); Davis, Sean G. (Idaho Falls, ID); Kaser, Timothy G. (Idaho Falls, ID); Conrad, Frank J. (Albuquerque, NM)

1995-01-01T23:59:59.000Z

425

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

426

Generation of energy  

DOE Patents (OSTI)

A method of generating energy which comprises utilizing relatively lower temperature available heat to effect partial distillation of at least portion of a multicomponent working fluid stream at an intermediate pressure to generate working fluid fractions of differing compositions. The fractions are used to produce at least one main rich solution which is relatively enriched with respect to the lower boiling component, and to produce at least one lean solution which is relatively improverished with respect to the lower boiling component. The pressure of the main rich solution is increased whereafter it is evaporated to produce a charged gaseous main working fluid. The main working fluid is expanded to a low pressure level to release energy. The spent low pressure level working fluid is condensed in a main absorption stage by dissolving with cooling in the lean solution to regenerate an initial working fluid for reuse.

Kalina, Alexander I. (12214 Clear Fork, Houston, TX 77077)

1984-01-01T23:59:59.000Z

427

As you prepare for your upcoming beam time, please be aware that construction is planned to update SLAC Gate 17 with RFID proximity card access hardware and to change the stairs next to the Security hut to an ADA compliant ramp. Please forward this to your proposal collaborators (and ensure that all users have registered and completed training before they arrive). This construction is scheduled to begin Tuesday 5/28 and be completed by 6/28. During this construction, access to the LCLS and SSRL buildings and experimental facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 5/28-6/28 0600-1530 (6 am-3:30 pm) Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. 1530-1800 (3:30-6:00 pm) Assumes construction will have stopped for the day; both traffic lanes will be open for vehicles. 1800-0600 (6 pm-6 am) As now, Gate 17 will be closed or barricaded overnight. PEDESTRIANS ONLY THROUGH GATE 16 5/28-6/28 The pedestrian turnstile at Gate 16A will not change. The turnstile is available for pedestrian use 24/7 as long as the individual has a valid SLAC ID badge (and there is a guard at Gate 30 to 'buzz' them through). 0700-1600 (6 am-4 pm) Pedestrians who would normally walk through Gate 17 will instead follow the detour to Gate 16 swing gate which will be unlocked and staffed by Security. A valid SLAC ID badge is needed to enter; new users without IDs will be allowed to proceed for check-in and badging after confirmation with the User Research Administration Office (see detour map attached). FYI - After the construction is completed and proximity card readers are fully functional, users and staff will enter Gates 17 and 30 using an activated RFID proximity card. More details to follow.  

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

Building 137 Building 137 Bldg. 270 CONSTRUCTION IMPACTS PEDESTRIAN AND VEHICLE ACCESS THROUGH SLAC SECURITY GATE 17 ~ May 28-June 28, 2013 The stairs next to the Gate 17 Guard House will be replaced with an ADA compliant ramp; the turnstile and fence at SLAC Gate 17 will be updated with RFID proximity card access hardware. During this construction, access beyond the fence, including the SSRL and LCLS buildings and user facilities will be provided as follows: VEHICLES ONLY THROUGH GATE 17 Security will continue to check for valid ID badges. 0600-1530 (6 am-3:30 pm) - Construction Zone. Only VEHICLE traffic will be allowed access through Gate 17 and flagman will provide traffic control. Security will 1530-1800 (3:30-6:00 pm) - Assuming construction has

428

New Generating Resources  

E-Print Network (OSTI)

Terrorist attacks constrain gas and oil imports and leads to global stagnation, and a U.S. recession, which is followed by sustained low economic growth where energy independence away from Middle East Oil and LNG imports is critical. Little competition or retirement of generation capacity, extended recovery from overbuild, and utilities gain vis--vis IPPs in a business environment where competition takes a backseat to energy independence. Terrorist attacks on U.S. and Int'l

Irp Stakeholders Group; David Clement; Steve Lush; Marilynn Semro; Seattle City; Power Horizons Scenarios

2006-01-01T23:59:59.000Z

429

Ion beam generating apparatus  

DOE Patents (OSTI)

An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam.

Brown, Ian G. (1088 Woodside Rd., Berkeley, CA 94708); Galvin, James (2 Commodore #276, Emeryville, CA 94608)

1987-01-01T23:59:59.000Z

430

Negative ion generator  

DOE Patents (OSTI)

A negative ion generator is formed from a magnetically insulated transmission line having a coating of graphite on the cathode for producing negative ions and a plurality of apertures on the opposed anode for the release of negative ions. Magnetic insulation keeps electrons from flowing from the cathode to the anode. A transverse magnetic field removes electrons which do escape through the apertures from the trajectory of the negative ions. 8 figs.

Stinnett, R.W.

1984-05-08T23:59:59.000Z

431

Distributed Generation Heat Recovery  

Science Conference Proceedings (OSTI)

Economic and environmental drivers are promoting the adoption of combined heat and power (CHP) systems. Technology advances have produced new and improved distributed generation (DG) units that can be coupled with heat recovery hardware to create CHP systems. Performance characteristics vary considerably among DG options, and it is important to understand how these characteristics influence the selection of CHP systems that will meet both electric and thermal site loads.

2002-03-06T23:59:59.000Z

432

HIGH VOLTAGE GENERATOR  

DOE Patents (OSTI)

A generator is presented for producing relatively large currents at high voltages. In general, the invention comprises a plurality of capacitors connected in series by a plurality of switches alternately disposed with the capacitors. The circuit is mounted for movement with respect to contact members and switch closure means so that a load device and power supply are connected across successive numbers of capacitors, while the other capacitors are successively charged with the same power supply.

Schwemin, A.J.

1959-03-17T23:59:59.000Z

433

Electrical pulse generator  

DOE Patents (OSTI)

A technique for generating high-voltage, wide dynamic range, shaped electrical pulses in the nanosecond range. Two transmission lines are coupled together by resistive elements distributed along the length of the lines. The conductance of each coupling resistive element as a function of its position along the line is selected to produce the desired pulse shape in the output line when an easily produced pulse, such as a step function pulse, is applied to the input line.

Norris, Neil J. (Santa Barbara, CA)

1979-01-01T23:59:59.000Z

434

High power microwave generator  

DOE Patents (OSTI)

A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high gain is obtained by placing a cylindrical Smith-Purcell transmission grating on the axis of a toroidal resonator. High efficiency results from the use of a thin cold annular highly-magnetized REB that is closely coupled to the resonant structure.

Ekdahl, C.A.

1983-12-29T23:59:59.000Z

435

High power microwave generator  

DOE Patents (OSTI)

A microwave generator efficiently converts the energy of an intense relativistic electron beam (REB) into a high-power microwave emission using the Smith-Purcell effect which is related to Cerenkov radiation. Feedback for efficient beam bunching and high gain is obtained by placing a cylindrical Smith-Purcell transmission grating on the axis of a toroidal resonator. High efficiency results from the use of a thin cold annular highly-magnetized REB that is closely coupled to the resonant structure.

Ekdahl, Carl A. (Albuquerque, NM)

1986-01-01T23:59:59.000Z

436

HIGH VOLTAGE GENERATOR  

DOE Patents (OSTI)

A generator for producing relatively large currents at high voltages is described. In general, the invention comprises a plurality of capacitors connected in series by a plurality of switches alternately disposed with the capacitors. The above-noted circuit is mounted for movement with respect to contact members and switch closure means so that a load device and power supply are connected across successive numbers of capacitors, while the other capacitors are successively charged with the same power supply.

Schwemin, A.J.

1959-03-17T23:59:59.000Z

437

Distributed Generation Biofuel Testing  

Science Conference Proceedings (OSTI)

This Technical Update report documents testing performed to assess aspects of using biofuel as an energy source for distributed generation. Specifically, the tests involved running Caterpillar Power Module compression ignition engines on palm methyl ester (PME) biofuel and comparing the emissions to those of the same engines running on ultra-low-sulfur diesel fuel. Fuel consumption and energy efficiency were also assessed, and some relevant storage and handling properties of the PME were noted. The tests...

2011-12-06T23:59:59.000Z

438

Ion beam generating apparatus  

DOE Patents (OSTI)

An ion generating apparatus utilizing a vacuum chamber, a cathode and an anode in the chamber. A source of electrical power produces an arc or discharge between the cathode and anode. The arc is sufficient to vaporize a portion of the cathode to form a plasma. The plasma is directed to an extractor which separates the electrons from the plasma, and accelerates the ions to produce an ion beam. 10 figs.

Brown, I.G.; Galvin, J.

1987-12-22T23:59:59.000Z

439

Component for thermoelectric generator  

DOE Patents (OSTI)

In a thermoelectric generator, a component comprises a ceramic insulator, having over limited areas thereof, each area corresponding to a terminal end of thermoelectric wires, a coating of a first metal which adheres to the insulator, and an electrical thermoelectric junction including a second metal which wets said first metal and adheres to said terminal ends but does not wet said insulator, and a cloth composed of electrically insulating threads interlaced with thermoelectric wires.

Purdy, David L. (Indiana, PA)

1977-01-01T23:59:59.000Z

440

GENERATOR PAD FOUNDATIONS  

SciTech Connect

The purpose of this analysis is to design structural foundations for the Generator Pad. The equipment foundation shall be designed in Section 10 using standard foundation design hand calculations. The vertical loads reflect Mechanical/Electrical requirements. Lateral loads will be calculated using applicable codes. The soil bearing and foundation stresses will be analyzed using accepted engineering mechanics. The foundation will be designed using the Strength Design Method.

T. Saltikov

1995-04-27T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Negative ion generator  

DOE Patents (OSTI)

A negative ion generator is formed from a magnetically insulated transmission line having a coating of graphite on the cathode for producing negative ions and a plurality of apertures on the opposed anode for the release of negative ions. Magnetic insulation keeps electrons from flowing from the cathode to the anode. A transverse magnetic field removes electrons which do escape through the apertures from the trajectory of the negative ions.

Stinnett, Regan W. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

442

Monodisperse aerosol generator  

DOE Patents (OSTI)

An aerosol generator is described which is capable of producing a monodisperse aerosol within narrow limits utilizing an aqueous solution capable of providing a high population of seed nuclei and an organic solution having a low vapor pressure. The two solutions are cold nebulized, mixed, vaporized, and cooled. During cooling, particles of the organic vapor condense onto the excess seed nuclei, and grow to a uniform particle size.

Ortiz, L.W.; Soderholm, S.C.

1988-09-19T23:59:59.000Z

443

Next Generation Relays  

Science Conference Proceedings (OSTI)

As the electric power industry moves forward with development of the smart grid, a number of issues emerge for existing protective relaying devices and systems. Even recently deployed relay design generations have been developed essentially as functional replacements for older electromechanical relays. As a result, the potential benefits of managing these new relays and their functions in a smarter and more efficient way have not been fully tapped. As utilities begin to deal with large deployments of the...

2010-12-23T23:59:59.000Z

444

Comparison of dc performance of Pt/Ti/Au- and Ni/Au-Gated AlGaN/GaN High Electron Mobility Transistors  

Science Conference Proceedings (OSTI)

We have demonstrated significant improvements of AlGaN/GaN High Electron Mobility Transistors (HEMTs) dc performance by employing Pt/Ti/Au instead of the conventional Ni/Au gate metallization. During off-state bias stressing, the typical critical voltage for HEMTs with Ni/Au gate metallization was ~ -45 to -65V. By sharp contrast, no critical voltage was observed for HEMTs with Pt/Ti/Au gate metallization, even up to -100V, which was the instrumental limitation in this experiment. After the off-state stressing, the drain current of Ni/Au gated-HEMTs decreased by~ 15%. For the Pt-gate HEMTs, no degradation of the drain current occurred and there were minimal changes in the Schottky gate characteristics for both forward and reverse bias conditions. The HEMTs with Pt/Ti/Au metallization showed an excellent drain on/off current ratio of 1.5 108. The on/off drain current ratio of Ni-gated HEMTs was dependent on the drain bias voltage and ranged from 1.2 107 at Vds=5V and 6 105

Liu, L. [University of Florida, Gainesville; Lo, C. F. [University of Florida; Kang, Tsung Sheng [University of Florida, Gainesville; Pearton, S. J. [University of Florida; Kravchenko, Ivan I [ORNL; Laboutin, O. [Kopin Corporation, Taunton, MA; Johnson, Wayne J. [Kopin Corporation, Taunton, MA; Ren, F. [University of Florida

2011-01-01T23:59:59.000Z

445

Milliwatt Generator Project  

DOE Green Energy (OSTI)

This report covers progress on the Milliwatt Generator Project from April 1986 through March 1988. Activities included fuel processing and characterization, production of heat sources, fabrication of pressure-burst test units, compatibility studies, impact testing, and examination of surveillance units. The major task of the Los Alamos Milliwatt Generator Project is to fabricate MC2893A heat sources (4.0 W) for MC2730A radioisotope thermoelectric generators (RTGS) and MC3599 heat sources (4.5 W) for MC3500 RTGs. The MWG Project interfaces with the following contractors: Sandia National Laboratories, Albuquerque (designer); E.I. du Pont de Nemours and Co. (Inc.), Savannah River Plant (fuel); Monsanto Research Corporation, Mound Facility (metal hardware); and General Electric Company, Neutron Devices Department (RTGs). In addition to MWG fabrication activities, Los Alamos is involved in (1) fabrication of pressure-burst test units, (2) compatibility testing and evaluation, (3) examination of surveillance units, and (4) impact testing and subsequent examination of compatibility and surveillance units.

Latimer, T.W.; Rinehart, G.H.

1992-05-01T23:59:59.000Z

446

Fuel cell generator energy dissipator  

DOE Patents (OSTI)

An apparatus and method are disclosed for eliminating the chemical energy of fuel remaining in a fuel cell generator when the electrical power output of the fuel cell generator is terminated. During a generator shut down condition, electrically resistive elements are automatically connected across the fuel cell generator terminals in order to draw current, thereby depleting the fuel

Veyo, Stephen Emery (Murrysville, PA); Dederer, Jeffrey Todd (Valencia, PA); Gordon, John Thomas (Ambridge, PA); Shockling, Larry Anthony (Pittsburgh, PA)

2000-01-01T23:59:59.000Z

447

Radioisotope photoelectric generator  

SciTech Connect

This disclosure is directed to a radioisotope photoelectric generator for producing electrical energy. The construction of the generator is similar to that of a well-known storage battery. The generator is composed of alternate layers of high-Z, (high atomic-number) and low-Z (low atomic-number) material which are insulated by vacuum or other insulating material. Low-energy photons from a radioactive source interact predominantly with the high-Z material by the photoelectric process, ejecting photoelectrons whose energy extends up to the incident gamma-ray energy E. By selecting the high-Z material thickness to be less than one electron range (at energy E) and the low-Z material thickness to be more than one electron range, there is a net electron transfer from the high-Z plates to the low-Z plates because electrons are emitted predominantly from the high-Z plates and stop in the low-Z plates. After start-up, a potential difference will build up between the high-Z and low-Z plates. An upper limit for this potential difference in kilovolts is the energy E in keV. The high-Z plates are connected together electrically and the low-Z plates are connected together electrically thus forming a battery. The battery delivers power to an external electrical load, preferably but not necessarily a resistor, whose value is chosen to maximize the power delivered to the electrical load, to yield the voltage desired, to control the temperature of the plates, or a combination of such considerations.

Ritter, J.C.

1979-12-11T23:59:59.000Z

448

Distributed Generation Status Update  

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

0 DOE Peer Review Presentation 0 DOE Peer Review Presentation © Chevron 2010 CERTS Microgrid Demonstration with Large scale Energy Storage & Renewable Generation November 5, 2010 Presented By: Craig Gee, Project Manager (for Mr. Eduardo Alegria - Principal Investigator) Energy Solutions November 2010 DOE Peer Review Presentation © Chevron 2010 Agenda * Introduction - Who we are * Project Team & Site * Project Purpose & Objectives * Project Impacts * System Elements * Project Status * Research Elements * Recent Developments in California * Questions & Comments November 2010 DOE Peer Review Presentation © Chevron 2010 Chevron Energy Solutions Designed & Implemented over 900 Projects in the U.S.  Chevron ES, a division of Chevron USA, Inc. is committed to delivering economically & environmentally advantageous green

449

Computer generated holographic microtags  

DOE Patents (OSTI)

A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers is disclosed. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them. 5 figs.

Sweatt, W.C.

1998-03-17T23:59:59.000Z

450

Computer generated holographic microtags  

DOE Patents (OSTI)

A microlithographic tag comprising an array of individual computer generated holographic patches having feature sizes between 250 and 75 nanometers. The tag is a composite hologram made up of the individual holographic patches and contains identifying information when read out with a laser of the proper wavelength and at the proper angles of probing and reading. The patches are fabricated in a steep angle Littrow readout geometry to maximize returns in the -1 diffracted order. The tags are useful as anti-counterfeiting markers because of the extreme difficulty in reproducing them.

Sweatt, William C. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

451

Highly stable aerosol generator  

DOE Patents (OSTI)

An improved compressed air nebulizer has been developed such that a uniform aerosol particle size and concentration may be produced over long time periods. This result is achieved by applying a vacuum pressure to the makeup assembly and by use of a vent tube between the atmosphere and the makeup solution. By applying appropriate vacuum pressures to the makeup solution container and by proper positioning of the vent tube, a constant level of aspirating solution may be maintained within the aspirating assembly with aspirating solution continuously replaced from the makeup solution supply. This device may also be adapted to have a plurality of aerosol generators and only one central makeup assembly.

DeFord, Henry S. (Kennewick, WA); Clark, Mark L. (Kennewick, WA)

1981-01-01T23:59:59.000Z

452

Hydrogen Generation From Electrolysis  

DOE Green Energy (OSTI)

Elements of the cell stack cost reduction and efficiency improvement work performed in the early stage of the program is being continued in subsequent DOE sponsored programs and through internal investment by Proton. The results of the trade study of the 100 kg H2/day system have established a conceptual platform for design and development of a next generation electrolyzer for Proton. The advancements started by this program have the possibility of being realized in systems for the developing fueling markets in 2010 period.

Steven Cohen; Stephen Porter; Oscar Chow; David Henderson

2009-03-06T23:59:59.000Z

453

Wind driven gas generator  

SciTech Connect

A means is provided to convert wind energy into electrical energy which, through electrolysis, forms gases to be stored under pressure, giving a form of stored energy for use at some future time by the use of a high torque, low speed vertical axis wind machine connected by direct drive to homopolar direct current generators so as to create direct current for the electrolysis of water, resulting in the breakdown of water into its basic components of hydrogen and oxygen, which are then stored under pressure until necessary for use as a source of energy.

Crehore, R.

1980-01-15T23:59:59.000Z

454

Highly stable aerosol generator  

DOE Patents (OSTI)

An improved compressed air nebulizer has been developed such that a uniform aerosol particle size and concentration may be produced over long time periods. This result is achieved by applying a vacuum pressure to the makeup assembly and by use of a vent tube between the atmosphere and the makeup solution. By applying appropriate vacuum pressures to the makeup solution container and by proper positioning of the vent tube, a constant level of aspirating solution may be maintained within the aspirating assembly with aspirating solution continuously replaced from the makeup solution supply. This device may also be adapted to have a plurality of aerosol generators and only one central makeup assembly. 2 figs.

DeFord, H.S.; Clark, M.L.

1981-11-03T23:59:59.000Z

455

Hermetic turbine generator  

DOE Patents (OSTI)

A Rankine cycle turbine drives an electric generator and a feed pump, all on a single shaft, and all enclosed within a hermetically sealed case. The shaft is vertically oriented with the turbine exhaust directed downward and the shaft is supported on hydrodynamic fluid film bearings using the process fluid as lubricant and coolant. The selection of process fluid, type of turbine, operating speed, system power rating, and cycle state points are uniquely coordinated to achieve high turbine efficiency at the temperature levels imposed by the recovery of waste heat from the more prevalent industrial processes.

Meacher, John S. (Ballston Lake, NY); Ruscitto, David E. (Ballston Spa, NY)

1982-01-01T23:59:59.000Z

456

On-demand generation of aqueous two-phase microdroplets with reversible phase transitions  

Science Conference Proceedings (OSTI)

Aqueous two-phase systems contained entirely within microdroplets enable a bottom-up approach to mimicking the dynamic microcompartmentation of biomaterial that naturally occurs within the cytoplasm of cells. Here, we demonstrate the on-demand generation of femtolitre aqueous two-phase droplets within a microfluidic oil channel. Gated pressure pulses were used to generate individual, stationary two-phase microdroplets with a well-defined time zero for carrying out controlled and sequential phase transformations over time. Reversible phase transitions between single-phase, two-phase, and core-shell microgel states were obtained via evaporation-induced dehydration and on-demand water rehydration. In contrast to other microfluidic aqueous two-phase droplets, which require continuous flows and high-frequency droplet formation, our system enables the controlled isolation and reversible transformation of a single microdroplet and is expected to be useful for future studies in dynamic microcompartmentation and affinity partitioning.

Boreyko, Jonathan B [ORNL; Mruetusatorn, Prachya [ORNL; Retterer, Scott T [ORNL; Collier, Pat [ORNL

2013-01-01T23:59:59.000Z

457

Wind lift generator  

SciTech Connect

A wind lift generator includes a housing structure formed by a pair of spaced apart plates mounted on support structure for pivotal rotation about a vertical axis at the forward end thereof for orienting into the wind, and said plates supporting a plurality of coaxially disposed sprockets arranged to support a pair of spaced apart drive chains in a quadrilateral configuration with lift foils connected and supported between the chains with the quadrilateral chain configuration supporting the chain for an initial lift mode at the forward end of the housing, followed by a direct impact mode extending from the front of the housing upward and backward to the rear of the housing and a negative lift mode extending from the top rear of the housing to the bottom with the vanes returning via a neutral mode to the front of the housing for repeating the lift cycle. A suitable electrical generator is driven from one or more shafts of the assembly driven by the drive chains.

Herman, G. R.; Martin, W. A.

1985-08-20T23:59:59.000Z

458

Geothermal Generation | Open Energy Information  

Open Energy Info (EERE)

Generation Generation Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Generation This article is a stub. You can help OpenEI by expanding it. Global Geothermal Energy Generation Global Geothermal Electricity Generation in 2007 (in millions of kWh):[1] United States: 14,637 Philippines: 12,080 Indonesia: 6,083 Mexico: 5,844 (Note: Select countries are listed; this is not an exhaustive list.) United States Geothermal Energy Generation U.S. geothermal energy generation remained relatively stable from 2000 to 2006, with more than 3% growth in 2007 and 2008.[1] U.S. geothermal electricity generation in 2008 was 14,859 GWh.[1] References ↑ 1.0 1.1 1.2 (Published: July 2009) "US DOE 2008 Renewable Energy Data Book" Retrieved from "http://en.openei.org/w/index.php?title=Geothermal_Generation&oldid=599391"

459

Biomass for Electricity Generation - Table 9  

U.S. Energy Information Administration (EIA)

Modeling and Analysis Papers> Biomass for Electricity Generation : Biomass for Electricity Generation. Table 9. Biomass-Fired Electricity Generation ...

460

Distributed Generation with Heat Recovery and Storage  

E-Print Network (OSTI)

L ABORATORY Distributed Generation with Heat Recovery andequal opportunity employer. Distributed Generation with Heatenergy resources (DER), distributed generation (DG), and

Siddiqui, Afzal S.; Marnay, Chris; Firestone, Ryan M.; Zhou, Nan

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dave gates generating" 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

Using Backup Generators: Choosing the Right Backup Generator - Business  

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

Choosing the Right Backup Generator Choosing the Right Backup Generator - Business Owners Using Backup Generators: Choosing the Right Backup Generator - Business Owners Using Backup Generators: Choosing the Right Backup Generator - Business Owners Identify essential systems and equipment-What do you need to keep your business operating? These may include heating, ventilation, and air conditioning systems; industrial equipment and major appliances, such as refrigerators and freezers; lights (interior and exterior), computers, and other office equipment; pumps, including sump pumps, sprinkler system pumps, and well water pumps; and alarm systems. Some of these systems and equipment may have to operate continuously, while others may be needed only during normal business hours. Choose the generator's fuel source-Backup generators are

462

Mechanism of inhibition of cyclic nucleotide-gated ion channels by diacylglycerol  

E-Print Network (OSTI)

abstract Cyclic nucleotidegated (CNG) channels are critical components in the visual and olfactory signal transduction pathways, and they primarily gate in response to changes in the cytoplasmic concentration of cyclic nucleotides. We previously found that the ability of the native rod CNG channel to be opened by cGMP was markedly inhibited by analogues of diacylglycerol (DAG) without a phosphorylation reaction (Gordon, S.E., J. Downing-Park, B. Tam, and A.L. Zimmerman. 1995. Biophys. J. 69:409417). Here, we have studied cloned bovine rod and rat olfactory CNG channels expressed in Xenopus oocytes, and have determined that they are differentially inhibited by DAG. At saturating [cGMP], DAG inhibition of homomultimeric ( ? subunit only) rod channels was similar to that of the native rod CNG channel, but DAG was much less effective at inhibiting the homomultimeric olfactory channel, producing only partial inhibition even at high [DAG]. However, at low open probability (P o), both channels were more sensitive to DAG, suggesting that DAG is a closed state inhibitor. The Hill coefficients for DAG inhibition were often greater than one, suggesting that more than one DAG molecule is required for effective inhibition of a channel. In single-channel recordings, DAG decreased the P o but not the single-channel conductance. Results with chimeras of rod and olfactory channels suggest that the differences in DAG inhibition correlate more with differences in the transmembrane segments and their attached loops than with differences in the amino and carboxyl termini. Our results are consistent with a model in which multiple DAG molecules stabilize the closed state(s) of a CNG channel by binding directly to the channel and/or by altering bilayerchannel interactions. We speculate that if DAG interacts directly with the channel, it may insert into a putative hydrophobic crevice among the transmembrane domains of each subunit or at the hydrophobic interface between the channel and the bilayer. key words: rod olfactory receptor channel modulation lipid bilayer tetracaine

Jennifer I. Crary; Dylan M. Dean; Wang Nguitragool; Peri T. Kurshan; Anita L. Zimmerman

2000-01-01T23:59:59.000Z

463

Quantum Mechanical Calculations of Charge Effects on gating the KcsA channel  

DOE Green Energy (OSTI)

The research described in this product was performed in part in the Environmental Molecular Sciences Laboratory, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory. A series of ab initio (density functional) calculations were carried out on side chains of a set of amino acids, plus water, from the (intracellular) gating region of the KcsA K+ channel. Their atomic coordinates, except hydrogen, are known from X-ray structures [D.A. Doyle, J.M. Cabral, R.A. Pfuetzner, A. Kuo, J.M. Gulbis, S.L. Cohen, B.T. Chait, R. MacKinnon, The structure of the potassium channel: molecular basis of K+ conduction and selectivity, Science 280 (1998) 6977; R. MacKinnon, S.L. Cohen, A. Kuo, A. Lee, B.T. Chait, Structural conservation in prokaryotic and eukaryotic potassium channels, Science 280 (1998) 106109; Y. Jiang, A. Lee, J. Chen, M. Cadene, B.T. Chait, R. MacKinnon, The open pore conformation of potassium channels. Nature 417 (2001) 523526], as are the coordinates of some water oxygen atoms. The 1k4c structure is used for the starting coordinates. Quantum mechanical optimization, in spite of the starting configuration, places the atoms in positions much closer to the 1j95, more tightly closed, configuration. This state shows four water molecules forming a basket under the Q119 side chains, blocking the channel. When a hydrated K+ approaches this basket, the optimized system shows a strong set of hydrogen bonds with the K+ at defined positions, preventing further approach of the K+ to the basket. This optimized structure with hydrated K+ added shows an ice-like 12 molecule nanocrystal of water. If the water molecules exchange, unless they do it as a group, the channel will remain blocked. The basket itself appears to be very stable, although it is possible that the K+ with its hydrating water molecules may be more mobile, capable of withdrawing from the gate. It is also not surprising that water essentially freezes, or forms a kind of glue, in a nanometer space; this agrees with experimental results on a rather different, but similarly sized (nm dimensions) system [K.B. Jinesh, J.W.M. Frenken, Capillary condensation in atomic scale friction: how water acts like a glue, Phys. Rev. Lett. 96 (2006) 166103/14].

Kariev, Alisher M.; Znamenskiy, Vasiliy S.; Green, Michael E.

2007-02-06T23:59:59.000Z

464

Steam Generator Management Program: Steam Generator Engineering Training Course 1  

Science Conference Proceedings (OSTI)

This technical update provides training material that was prepared for the first of three Steam Generator Engineer Training Program courses. The Steam Generator Engineer Training Program is a comprehensive training program of the Steam Generator Management Program. The content of this course is based on an industry-developed job analysis for a steam generator engineer. The job analysis resulted in eight high-level tasks; therefore, eight training modules will be developed over a three-year period beginni...

2009-03-25T23:59:59.000Z

465

SU?E?J?152: Fluoroscopic Treatment Verification for Gated Stereotactic Body Radiation Therapy of a Tumor Located Near the Dome of the Liver: A  

Science Conference Proceedings (OSTI)

Purpose: To describe a method using pretreatment and intrafraction fluoroscopic verification of the gated treatment of a liver lesion located near the diaphragm. Methods: A 74?year?old female patient

2013-01-01T23:59:59.000Z

466

Comparison of Intake Gate Closure Methods At Lower Granite, Little Goose, Lower Monumental, And McNary Dams Using Risk-Based Analysis  

DOE Green Energy (OSTI)

The objective of this report is to compare the benefits and costs of modifications proposed for intake gate closure systems at four hydroelectric stations on the Lower Snake and Upper Columbia Rivers in the Walla Walla District that are unable to meet the COE 10-minute closure rule due to the installation of fish screens. The primary benefit of the proposed modifications is to reduce the risk of damage to the station and environs when emergency intake gate closure is required. Consequently, this report presents the results and methodology of an extensive risk analysis performed to assess the reliability of powerhouse systems and the costs and timing of potential damages resulting from events requiring emergency intake gate closure. As part of this analysis, the level of protection provided by the nitrogen emergency closure system was also evaluated. The nitrogen system was the basis for the original recommendation to partially disable the intake gate systems. The risk analysis quantifies this protection level.

Gore, Bryan F; Blackburn, Tye R; Heasler, Patrick G; Mara, Neil L

2001-01-19T23:59:59.000Z

467

ADVANCED STEAM GENERATORS  

SciTech Connect

Concerns about climate change have encouraged significant interest in concepts for ultra-low or ''zero''-emissions power generation systems. In some proposed concepts, nitrogen is removed from the combustion air and replaced with another diluent such as carbon dioxide or steam. In this way, formation of nitrogen oxides is prevented, and the exhaust stream can be separated into concentrated CO{sub 2} and steam or water streams. The concentrated CO{sub 2} stream could then serve as input to a CO{sub 2} sequestration process or utilized in some other way. Some of these concepts are illustrated in Figure 1. This project is an investigation of one approach to ''zero'' emission power generation. Oxy-fuel combustion is used with steam as diluent in a power cycle proposed by Clean Energy Systems, Inc. (CES) [1,2]. In oxy-fuel combustion, air separation is used to produce nearly pure oxygen for combustion. In this particular concept, the combustion temperatures are moderated by steam as a diluent. An advantage of this technique is that water in the product stream can be condensed with relative ease, leaving a pure CO{sub 2} stream suitable for sequestration. Because most of the atmospheric nitrogen has been separated from the oxidant, the potential to form any NOx pollutant is very small. Trace quantities of any minor pollutants species that do form are captured with the CO{sub 2} or can be readily removed from the condensate. The result is a nearly zero-emission power plant. A sketch of the turbine system proposed by CES is shown in Figure 2. NETL is working with CES to develop a reheat combustor for this application. The reheat combustion application is unusual even among oxy-fuel combustion applications. Most often, oxy-fuel combustion is carried out with the intent of producing very high temperatures for heat transfer to a product. In the reheat case, incoming steam is mixed with the oxygen and natural gas fuel to control the temperature of the output stream to about 1480 K. A potential concern is the possibility of quenching non-equilibrium levels of CO or unburned fuel in the mixing process. Inadequate residence times in the combustor and/or slow kinetics could possibly result in unacceptably high emissions. Thus, the reheat combustor design must balance the need for minimal excess oxygen with the need to oxidize the CO. This paper will describe the progress made to date in the design, fabrication, and simulation of a reheat combustor for an advanced steam generator system, and discuss planned experimental testing to be conducted in conjunction with NASA Glenn Research Center-Plumb Brook Station.

Richards, Geo. A.; Casleton, Kent H.; Lewis, Robie E.; Rogers, William A. (U.S. DOE National Energy Technology Laboratory); Woike, Mark R.; Willis; Brian P. (NASA Glenn Research Center)

2001-11-06T23:59:59.000Z

468

Chapter 2 Generation Adequacy | Department of Energy  

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

Generation Adequacy Chapter 2 Generation Adequacy Chapter 2 Generation Adequacy Chapter 2 Generation Adequacy More Documents & Publications Chapter 1: Keeping the Lights on in the...

469

(DOE/EIS-0128): Mitigation Action Plan for the Los Banos-Gates Transmission project 1/28/03  

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

Date: ____________________________ 1 Date: ____________________________ 1 Western Area Power Administration Mitigation Action Plan for the Los Banos - Gates (Path 15) Transmission Project 1.0 INTRODUCTION 1.1 HISTORY AND BACKGROUND In May 2001, Secretary of Energy Spencer Abraham directed the Western Area Power Administration (Western) to take the first steps, including the preparation of environmental studies, toward developing the Los Banos - Gates Transmission Project, also known as the Path 15 Project. This directive was issued to carry out a recommendation in the May 2001 National Energy Policy. Western is a Power Marketing Administration within the Department of Energy (DOE) whose role is to market and transmit electricity from multi- use water projects in the western United States, including California. The

470

Mitigation Action Plan for Los Banos - Gates (Path 15) Transmission Project (DOE/EIS-0128) (12/3/03)  

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

2 Date: December 3, 2003 1 2 Date: December 3, 2003 1 Western Area Power Administration Mitigation Action Plan for the Los Banos - Gates (Path 15) Transmission Project 1.0 INTRODUCTION 1.1 HISTORY AND BACKGROUND In May 2001, Secretary of Energy Spencer Abraham directed the Western Area Power Administration (Western) to take the first steps, including the preparation of environmental studies, toward developing the Los Banos - Gates Transmission Project, also known as the Path 15 Project. This directive was issued to carry out a recommendation in the May 2001 National Energy Policy. Western is a power marketing administration within the Department of Energy (DOE) whose role is to market and transmit electricity from multi-use water projects in the western United States, including California. The Path 15 Project, located in California's western

471

Dilation x-ray imager a new/faster gated x-ray imager for the NIF  

SciTech Connect

As the yield on implosion shots increases it is expected that the peak x-ray emission reduces to a duration with a FWHM as short as 20 ps for {approx}7 Multiplication-Sign 10{sup 18} neutron yield. However, the temporal resolution of currently used gated x-ray imagers on the NIF is 40-100 ps. We discuss the benefits of the higher temporal resolution for the NIF and present performance measurements for dilation x-ray imager, which utilizes pulse-dilation technology [T. J. Hilsabeck et al., Rev. Sci. Instrum. 81, 10E317 (2010)] to achieve x-ray imaging with temporal gate times below 10 ps. The measurements were conducted using the COMET laser, which is part of the Jupiter Laser Facility at the Lawrence Livermore National Laboratory.

Nagel, S. R.; Bell, P. M.; Bradley, D. K.; Ayers, M. J.; Barrios, M. A.; Felker, B.; Smith, R. F.; Collins, G. W.; Jones, O. S.; Piston, K.; Raman, K. S. [Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550 (United States); Hilsabeck, T. J.; Kilkenny, J. D.; Chung, T.; Sammuli, B. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Hares, J. D.; Dymoke-Bradshaw, A. K. L. [Kentech Instruments Ltd., Wallingford, Oxfordshire OX10 (United Kingdom)

2012-10-15T23:59:59.000Z

472

Deflection gating for time-resolved x-ray magnetic circular dichroism-photoemission electron microscopy using synchrotron radiation  

SciTech Connect

In this paper, we present a newly developed gating technique for a time-resolving photoemission microscope. The technique makes use of an electrostatic deflector within the microscope's electron optical system for fast switching between two electron-optical paths, one of which is used for imaging, while the other is blocked by an aperture stop. The system can be operated with a switching time of 20 ns and shows superior dark current rejection. We report on the application of this new gating technique to exploit the time structure in the injection bunch pattern of the synchrotron radiation source BESSY II at Helmholtz-Zentrum Berlin for time-resolved measurements in the picosecond regime.

Wiemann, C.; Kaiser, A. M.; Cramm, S. [Peter Gruenberg Institut PGI-6 'Electronic Properties', Research Centre Juelich, D-52425 Juelich (Germany); Schneider, C. M. [Peter Gruenberg Institut PGI-6 'Electronic Properties', Research Centre Juelich, D-52425 Juelich (Germany); Fakultaet fuer Physik and Center for Nanointegration Duisburg-Essen (CeNIDE), Universitaet Duisburg-Essen, D-47048 Duisburg (Germany)

2012-06-15T23:59:59.000Z

473

SnO2-gated AlGaN/GaN high electron mobility transistors based oxygen sensors  

Science Conference Proceedings (OSTI)

Hydrothermally grown SnO2 was integrated with AlGaN/GaN high electron mobility transistor (HEMT) sensor as the gate electrode for oxygen detection. The crystalline of the SnO2 was improved after annealing at 400 C. The grain growth kinetics of the SnO2 nanomaterials, together with the O2 gas sensing properties and sensing mechanism of the SnO2 gated HEMT sensors were investigated. Detection of 1% oxygen in nitrogen at 100 C was possible. A low operation temperature and low power consumption oxygen sensor can be achieved by combining the SnO2 films with the AlGaN/GaN HEMT structure

Hung, S.T. [Feng Chia University, Taichung, Taiwan; Chung, Chi-Jung [Feng Chia University, Taichung, Taiwan; Chen, Chin Ching [University of Florida, Gainesville; Lo, C. F. [University of Florida; Ren, F. [University of Florida; Pearton, S. J. [University of Florida; Kravchenko, Ivan I [ORNL

2012-01-01T23:59:59.000Z

474

Superconducting thermoelectric generator  

DOE Patents (OSTI)

An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

Metzger, John D. (Eaton' s Neck, NY); El-Genk, Mohamed S. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

475

Generation of electrical power  

DOE Patents (OSTI)

A heat-to-electricity converter is disclosed which includes a radioactive heat source and a thermoelectric element of relatively short overall length capable of delivering a low voltage of the order of a few tenths of a volt. Such a thermoelectric element operates at a higher efficiency than longer higher-voltage elements; for example, elements producing 6 volts. In the generation of required power, thermoelectric element drives a solid-state converter which is controlled by input current rather than input voltage and operates efficiently for a high signal-plus-noise to signal ratio of current. The solid-state converter has the voltage gain necessary to deliver the required voltage at the low input of the thermoelectric element.

Hursen, Thomas F. (Monroeville, PA); Kolenik, Steven A. (Leechburg, PA); Purdy, David L. (Indiana, PA)

1976-01-01T23:59:59.000Z

476

Fourth Generation Parity  

SciTech Connect

We present a very simple 4th-generation (4G) model with an Abelian gauge interaction under which only the 4G fermions have nonzero charge. The U(1) gauge symmetry can have a Z_2 residual discrete symmetry (4G-parity), which can stabilize the lightest 4G particle (L4P). When the 4G neutrino is the L4P, it would be a neutral and stable particle and the other 4G fermions would decay into the L4P leaving the trace of missing energy plus the standard model fermions. Because of the new symmetry, the 4G particle creation and decay modes are different from those of the sequential 4G model, and the 4G particles can be appreciably lighter than typical experimental bounds.

Lee, Hye-Sung [William and Mary College, BNL, JLAB; Soni, Amarjit [William and Mary College

2013-01-01T23:59:59.000Z

477

Stratified vapor generator  

DOE Patents (OSTI)

A stratified vapor generator (110) comprises a first heating section (H.sub.1) and a second heating section (H.sub.2). The first and second heating sections (H.sub.1, H.sub.2) are arranged so that the inlet of the second heating section (H.sub.2) is operatively associated with the outlet of the first heating section (H.sub.1). A moisture separator (126) having a vapor outlet (164) and a liquid outlet (144) is operatively associated with the outlet (124) of the second heating section (H.sub.2). A cooling section (C.sub.1) is operatively associated with the liquid outlet (144) of the moisture separator (126) and includes an outlet that is operatively associated with the inlet of the second heating section (H.sub.2).

Bharathan, Desikan (Lakewood, CO); Hassani, Vahab (Golden, CO)

2008-05-20T23:59:59.000Z

478

Downhole hydraulic seismic generator  

DOE Patents (OSTI)

A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

Gregory, Danny L. (Corrales, NM); Hardee, Harry C. (Albuquerque, NM); Smallwood, David O. (Albuquerque, NM)

1992-01-01T23:59:59.000Z

479

Downhole hydraulic seismic generator  

DOE Patents (OSTI)

A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole. 4 figs.

Gregory, D.L.; Hardee, H.C.; Smallwood, D.O.

1990-01-01T23:59:59.000Z

480

Downhole hydraulic seismic generator  

DOE Patents (OSTI)

A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole. 4 figs.

Gregory, D.L.; Hardee, H.C.; Smallwood, D.O.

1990-12-31T23:59:59.000Z

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481

Superconducting thermoelectric generator  

DOE Patents (OSTI)

An apparatus and method for producing electricity from heat is disclosed. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device. 4 figs.

Metzger, J.D.; El-Genk, M.S.

1998-05-05T23:59:59.000Z

482

Superconducting thermoelectric generator  

DOE Patents (OSTI)

This invention is comprised of an apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a higher thermal conductivity than that of the superconducting material. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials, establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

Metzger, J.D.; El-Genk, M.

1992-12-31T23:59:59.000Z

483

Superconducting thermoelectric generator  

DOE Patents (OSTI)

An apparatus and method for producing electricity from heat. The present invention is a thermoelectric generator that uses materials with substantially no electrical resistance, often called superconductors, to efficiently convert heat into electrical energy without resistive losses. Preferably, an array of superconducting elements is encased within a second material with a high thermal conductivity. The second material is preferably a semiconductor. Alternatively, the superconducting material can be doped on a base semiconducting material, or the superconducting material and the semiconducting material can exist as alternating, interleaved layers of waferlike materials. A temperature gradient imposed across the boundary of the two materials establishes an electrical potential related to the magnitude of the temperature gradient. The superconducting material carries the resulting electrical current at zero resistivity, thereby eliminating resistive losses. The elimination of resistive losses significantly increases the conversion efficiency of the thermoelectric device.

Metzger, J.D.; El-Genk, M.S.

1996-01-01T23:59:59.000Z

484

ION PULSE GENERATION  

DOE Patents (OSTI)

A device for generating ions in an ion source, forming the ions into a stream, deflecting the stream rapidly away from and back to its normal path along the axis of a cylindrical housing, and continually focusing the stream by suitable means into a sharp, intermittent beam along the axis is described. The beam exists through an axial aperture into a lens which focuses it into an accelerator tube. The ions in each burst are there accelerated to very high energies and are directed against a target placed in the high-energy end of the tube. Radiations from the target can then be analyzed in the interval between incidence of the bursts of ions on the target.

King, R.F.; Moak, C.D.; Parker, V.E.

1960-10-11T23:59:59.000Z

485

Interfacial transition regions at germanium/Hf oxide based dielectric interfaces: Qualitative differences between non-crystalline Hf Si oxynitride and nanocrystalline HfO2 gate stacks  

Science Conference Proceedings (OSTI)

The contribution from a relatively low-K SiON (K~6) interfacial transition region (ITR) between Si and transition metal high-K gate dielectrics such as nanocrystalline HfO"2 (K~20), and non-crystalline Hf Si oxynitride (K~10-12) places a significant ... Keywords: Di-vacancy defects, Ge substrates, High-K gate dielectrics, Interfacial transition regions, MOS devices, Native Ge dielectrics, Spectroscopic ellipsometry, X-ray absorption spectroscopy

G. Lucovsky; S. Lee; J. P. Long; H. Seo; J. Lning

2009-03-01T23:59:59.000Z