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


1

General Compression | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6TheoreticalFuelCellGemini Solar DevelopmentCompression Jump

2

Database Encryption Luc Bouganim  

E-Print Network [OSTI]

Database Encryption Luc Bouganim INRIA Rocquencourt Le Chesnay, FRANCE Luc.Bouganim@inria.fr Yanli GUO INRIA Rocquencourt Le Chesnay, FRANCE yanli.guo@inria.fr Related concepts and keywords Database security, Data confidentiality, Hardware Security Module Definition Database encryption refers to the use

Paris-Sud XI, Université de

3

Turbulent Combustion Luc Vervisch  

E-Print Network [OSTI]

;19 "Perfect" combustion modes: Fuel + Oxidizer () Products Engines, gas turbines... Laboratory experiment1 Turbulent Combustion Modeling Luc Vervisch INSA de Rouen, IUF, CORIA-CNRS Quelques problÚmes rencontrés en chimie numérique : Hydrologie - Combustion - AtmosphÚre 16 décembre, INRIA Rocquencourt #12

Kern, Michel

4

Generalized one-dimensional, steady, compressible flow  

SciTech Connect (OSTI)

The present development and testing of a generalized method for analytically examining 1D steady flow of perfect gases allows area change, heat transfer, friction, and mass injection. Generalized flow functions are developed, and sample tables are calculated and tested for both simple cases and combined changes. Normal shocks are noted to occur from the supersonic portion of these loci to the subsonic portion, in a manner analogous to simple-change behavior. 9 refs.

Young, F.M. (Lamar Univ., Beaumont, TX (United States))

1993-01-01T23:59:59.000Z

5

2012 ARPA-E Energy Innovation Summit: Profiling General Compression: A River of Wind  

ScienceCinema (OSTI)

The third annual ARPA-E Energy Innovation Summit was held in Washington D.C. in February, 2012. The event brought together key players from across the energy ecosystem - researchers, entrepreneurs, investors, corporate executives, and government officials - to share ideas for developing and deploying the next generation of energy technologies. A few videos were selected for showing during the Summit to attendees. These 'performer videos' highlight innovative research that is ongoing and related to the main topics of the Summit's sessions. Featured in this video are David Marcus, Founder of General Compression, and Eric Ingersoll, CEO of General Compression. General Compression, with the help of ARPA-E funding, has created an advanced air compression process which can store and release more than a weeks worth of the energy generated by wind turbines.

Marcus, David; Ingersoll, Eric

2012-03-21T23:59:59.000Z

6

2012 ARPA-E Energy Innovation Summit: Profiling General Compression: A River of Wind  

SciTech Connect (OSTI)

The third annual ARPA-E Energy Innovation Summit was held in Washington D.C. in February, 2012. The event brought together key players from across the energy ecosystem - researchers, entrepreneurs, investors, corporate executives, and government officials - to share ideas for developing and deploying the next generation of energy technologies. A few videos were selected for showing during the Summit to attendees. These 'performer videos' highlight innovative research that is ongoing and related to the main topics of the Summit's sessions. Featured in this video are David Marcus, Founder of General Compression, and Eric Ingersoll, CEO of General Compression. General Compression, with the help of ARPA-E funding, has created an advanced air compression process which can store and release more than a weeks worth of the energy generated by wind turbines.

Marcus, David; Ingersoll, Eric

2012-02-29T23:59:59.000Z

7

General Compression Looks at Energy Storage from a Different Angle |  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdf Flash2010-72.pdfAccomplishmentsFutureGUIDANCE ONElectronofDepartment

8

Numerical solution of shock and ramp compression for general material properties  

SciTech Connect (OSTI)

A general formulation was developed to represent material models for applications in dynamic loading. Numerical methods were devised to calculate response to shock and ramp compression, and ramp decompression, generalizing previous solutions for scalar equations of state. The numerical methods were found to be flexible and robust, and matched analytic results to a high accuracy. The basic ramp and shock solution methods were coupled to solve for composite deformation paths, such as shock-induced impacts, and shock interactions with a planar interface between different materials. These calculations capture much of the physics of typical material dynamics experiments, without requiring spatially-resolving simulations. Example calculations were made of loading histories in metals, illustrating the effects of plastic work on the temperatures induced in quasi-isentropic and shock-release experiments, and the effect of a phase transition.

Swift, D C

2009-01-28T23:59:59.000Z

9

OCEAN STIRRING BY SWIMMING BODIES Jean-Luc Thiffeault  

E-Print Network [OSTI]

proposed that the mechanical energy delivered by the swimming motions of the marine biosphere could amountOCEAN STIRRING BY SWIMMING BODIES By Jean-Luc Thiffeault and Stephen Childress IMA Preprint Series Hall 207 Church Street S.E. Minneapolis, Minnesota 55455­0436 Phone: 612-624-6066 Fax: 612-626-7370 URL

10

FROM GENETIC CODING TO PROTEIN FOLDING Jean-Luc Jestin  

E-Print Network [OSTI]

FROM GENETIC CODING TO PROTEIN FOLDING Jean-Luc Jestin ABSTRACT A discrete classical mechanics (DCM of the genetic code. A DCM model for protein folding allows a set of folding nuclei to be derived for each. A PROTEIN FOLDING MODEL Let us consider the following protein folding model. A chemical group of mass m

Paris-Sud XI, Université de

11

COMPRESSIVE VIDEO CLASSIFICATION IN A LOW-DIMENSIONAL MANIFOLD WITH LEARNED DISTANCE METRIC  

E-Print Network [OSTI]

COMPRESSIVE VIDEO CLASSIFICATION IN A LOW-DIMENSIONAL MANIFOLD WITH LEARNED DISTANCE METRIC George Tzagkarakis1 , Grigorios Tsagkatakis2 , Jean-Luc Starck1 and Panagiotis Tsakalides2 1 Commissariat `a l'ÂŽEnergie of video classification based on a set of com- pressed features, without the need of accessing the original

Tsakalides, Panagiotis

12

corresponding author: jean-luc.maurice@polytechnique.edu DEVELOPING LOW-COST GRAPHENE DEVICES  

E-Print Network [OSTI]

corresponding author: jean-luc.maurice@polytechnique.edu DEVELOPING LOW-COST GRAPHENE DEVICES C. S In spite of numerous efforts for developing the applications of graphene, it remains difficult to put-area (industrial) graphene includes in its structure and on its surfaces a significant density of defects that make

Paris-Sud XI, Université de

13

Entropy-based Power Attack Houssem Maghrebi, Sylvain Guilley, Jean-Luc Danger, Florent Flament  

E-Print Network [OSTI]

Entropy-based Power Attack Houssem Maghrebi, Sylvain Guilley, Jean-Luc Danger, Florent Flament D-Order Differential Power Analysis (HO-DPA). For instance, an attack based on a variance analysis clearly shows attacks, called the Entropy-based Power Analysis (EPA). This new attack gives a greatest importance

14

Entropy-based Power Attack Houssem Maghrebi, Sylvain Guilley, Jean-Luc Danger, Florent Flament  

E-Print Network [OSTI]

Entropy-based Power Attack Houssem Maghrebi, Sylvain Guilley, Jean-Luc Danger, Florent Flament D to Higher-Order Differential Power Analysis (HO-DPA). For instance, an attack based on a variance anal- ysis to information- theoretic HO attacks, called the Entropy-based Power Analysis (EPA). This new attack gives

Paris-Sud XI, Université de

15

DiSC: Benchmarking Secure Chip DBMS Nicolas Anciaux, Luc Bouganim, Philippe Pucheral, and Patrick Valduriez  

E-Print Network [OSTI]

DiSC: Benchmarking Secure Chip DBMS Nicolas Anciaux, Luc Bouganim, Philippe Pucheral, and Patrick irrelevant. The main problem faced by secure chip DBMS designers is to be able to assess various design choices and trade-offs for different applications. Our solution is to use a benchmark for secure chip DBMS

Paris-Sud XI, Université de

16

Compression embedding  

DOE Patents [OSTI]

A method and apparatus for embedding auxiliary information into the digital representation of host data created by a lossy compression technique and a method and apparatus for constructing auxiliary data from the correspondence between values in a digital key-pair table with integer index values existing in a representation of host data created by a lossy compression technique are disclosed. The methods apply to data compressed with algorithms based on series expansion, quantization to a finite number of symbols, and entropy coding. Lossy compression methods represent the original data as ordered sequences of blocks containing integer indices having redundancy and uncertainty of value by one unit, allowing indices which are adjacent in value to be manipulated to encode auxiliary data. Also included is a method to improve the efficiency of lossy compression algorithms by embedding white noise into the integer indices. Lossy compression methods use loss-less compression to reduce to the final size the intermediate representation as indices. The efficiency of the loss-less compression, known also as entropy coding compression, is increased by manipulating the indices at the intermediate stage. Manipulation of the intermediate representation improves lossy compression performance by 1 to 10%. 21 figs.

Sandford, M.T. II; Handel, T.G.; Bradley, J.N.

1998-07-07T23:59:59.000Z

17

Compression embedding  

DOE Patents [OSTI]

A method and apparatus for embedding auxiliary information into the digital representation of host data created by a lossy compression technique and a method and apparatus for constructing auxiliary data from the correspondence between values in a digital key-pair table with integer index values existing in a representation of host data created by a lossy compression technique. The methods apply to data compressed with algorithms based on series expansion, quantization to a finite number of symbols, and entropy coding. Lossy compression methods represent the original data as ordered sequences of blocks containing integer indices having redundancy and uncertainty of value by one unit, allowing indices which are adjacent in value to be manipulated to encode auxiliary data. Also included is a method to improve the efficiency of lossy compression algorithms by embedding white noise into the integer indices. Lossy compression methods use loss-less compression to reduce to the final size the intermediate representation as indices. The efficiency of the loss-less compression, known also as entropy coding compression, is increased by manipulating the indices at the intermediate stage. Manipulation of the intermediate representation improves lossy compression performance by 1 to 10%.

Sandford, II, Maxwell T. (Los Alamos, NM); Handel, Theodore G. (Los Alamos, NM); Bradley, Jonathan N. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

18

Compression embedding  

DOE Patents [OSTI]

A method of embedding auxiliary information into the digital representation of host data created by a lossy compression technique. The method applies to data compressed with lossy algorithms based on series expansion, quantization to a finite number of symbols, and entropy coding. Lossy compression methods represent the original data as integer indices having redundancy and uncertainty in value by one unit. Indices which are adjacent in value are manipulated to encode auxiliary data. By a substantially reverse process, the embedded auxiliary data can be retrieved easily by an authorized user. Lossy compression methods use loss-less compressions known also as entropy coding, to reduce to the final size the intermediate representation as indices. The efficiency of the compression entropy coding, known also as entropy coding is increased by manipulating the indices at the intermediate stage in the manner taught by the method.

Sandford, II, Maxwell T. (Los Alamos, NM); Handel, Theodore G. (Los Alamos, NM); Bradley, Jonathan N. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

19

Compression embedding  

DOE Patents [OSTI]

A method of embedding auxiliary information into the digital representation of host data created by a lossy compression technique is disclosed. The method applies to data compressed with lossy algorithms based on series expansion, quantization to a finite number of symbols, and entropy coding. Lossy compression methods represent the original data as integer indices having redundancy and uncertainty in value by one unit. Indices which are adjacent in value are manipulated to encode auxiliary data. By a substantially reverse process, the embedded auxiliary data can be retrieved easily by an authorized user. Lossy compression methods use loss-less compressions known also as entropy coding, to reduce to the final size the intermediate representation as indices. The efficiency of the compression entropy coding, known also as entropy coding is increased by manipulating the indices at the intermediate stage in the manner taught by the method. 11 figs.

Sandford, M.T. II; Handel, T.G.; Bradley, J.N.

1998-03-10T23:59:59.000Z

20

Compressed Gas Cylinder Safe Handling, Use and  

E-Print Network [OSTI]

Compressed Gas Cylinder Safe Handling, Use and Storage 2012 Workplace Safety and Environmental Protection #12;i College/Unit: Workplace Safety and Environmental Protection Procedure Title: Compressed Gas................................................ 4 7 General Gas Cylinder Information

Saskatchewan, University of

Note: This page contains sample records for the topic "luc general compression" 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

Mercury's moment of inertia from spin and gravity data Jean-Luc Margot,1,2  

E-Print Network [OSTI]

Mercury's moment of inertia from spin and gravity data Jean-Luc Margot,1,2 Stanton J. Peale,3 Sean of Mercury at 35 epochs between 2002 and 2012 reveal that its spin axis is tilted by (2.04 Ă? 0.08) arc min with respect to the orbit normal. The direction of the tilt suggests that Mercury is in or near a Cassini state

Hauck II, Steven A.

22

FRACTAL APPROXIMATION AND COMPRESSION USING PROJECTED IFS  

E-Print Network [OSTI]

FRACTAL APPROXIMATION AND COMPRESSION USING PROJECTED IFS �ric Guérin, �ric Tosan and Atilla, or images) with fractal models is an important center of interest for research. The general inverse problem.The most known of them is the fractal image compression method introduced by Jacquin. Generally speaking

Baskurt, Atilla

23

Higher-Order Tensors in Diffusion Imaging Thomas Schultz, Andrea Fuster, Aurobrata Ghosh, Rachid Deriche, Luc Florack,  

E-Print Network [OSTI]

Deriche, Luc Florack, Lek-Heng Lim Abstract Diffusion imaging is a noninvasive tool for probing.ghosh,rachid.deriche}@inria.fr Lek-Heng Lim University of Chicago, USA. e-mail: lekheng@uchicago.edu These authors have contributed

Lim, Lek-Heng

24

Service Engineering Life-cycles Jean-Luc Garnier Jean-Philippe Auzelle Claude Pourcel Marc Peyrichon  

E-Print Network [OSTI]

1/15 Service Engineering Life-cycles Jean-Luc Garnier Jean-Philippe Auzelle Claude Pourcel Marc, this paper provides foundation principles of service engineering with description of terms and concepts; life this period, as no real engineering process and business logic were foreseen, "SOA (service-oriented approach

Boyer, Edmond

25

Energy flux measurement from the dissipated energy in capillary wave turbulence Luc Deike, Michael Berhanu, and Eric Falcon  

E-Print Network [OSTI]

Energy flux measurement from the dissipated energy in capillary wave turbulence Luc Deike, Michael the dissipation is increased. The energy dissipated by capillary waves is also measured and found to increase with the frequency and the newly defined mean energy flux are in good agreement with wave turbulence theory

Paris-Sud XI, Université de

26

ROBUST SPEECH / MUSIC CLASSIFICATION IN AUDIO DOCUMENTS Julien PINQUIER, Jean-Luc ROUAS and Regine ANDR E-OBRECHT  

E-Print Network [OSTI]

- efficients are extracted and energy is computed in 40 per- ceptual channels. This energy is then filteredROBUST SPEECH / MUSIC CLASSIFICATION IN AUDIO DOCUMENTS Julien PINQUIER, Jean-Luc ROUAS and R energy. The relevance of these features is studied in a first experiment based on a development corpus

Pinquier, Julien

27

Automatic Layout Optimization of an EMC filter Thomas DE OLIVEIRA, Jean-Luc SCHANEN, Jean-Michel GUICHON, Laurent GERBAUD  

E-Print Network [OSTI]

Automatic Layout Optimization of an EMC filter Thomas DE OLIVEIRA, Jean-Luc SCHANEN, Jean France Abstract- The transfer function of an EMC (Electro-Magnetic Compatibility) filter is strongly for embedded applications. When looking on a power converter, the EMC filter represents 30% of the volume

Paris-Sud XI, Université de

28

Atomic effect algebras with compression bases  

SciTech Connect (OSTI)

Compression base effect algebras were recently introduced by Gudder [Demonstr. Math. 39, 43 (2006)]. They generalize sequential effect algebras [Rep. Math. Phys. 49, 87 (2002)] and compressible effect algebras [Rep. Math. Phys. 54, 93 (2004)]. The present paper focuses on atomic compression base effect algebras and the consequences of atoms being foci (so-called projections) of the compressions in the compression base. Part of our work generalizes results obtained in atomic sequential effect algebras by Tkadlec [Int. J. Theor. Phys. 47, 185 (2008)]. The notion of projection-atomicity is introduced and studied, and several conditions that force a compression base effect algebra or the set of its projections to be Boolean are found. Finally, we apply some of these results to sequential effect algebras and strengthen a previously established result concerning a sufficient condition for them to be Boolean.

Caragheorgheopol, Dan [Department of Mathematics and Informatics, Technical University of Civil Engineering in Bucharest, 124 Lacul Tei blv., RO-020396 and 'Ilie Murgulescu' Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, 060021 Bucharest (Romania); Tkadlec, Josef [Department of Mathematics, Faculty of Electrical Engineering, Czech Technical University in Prague, 166 27 Prague (Czech Republic)

2011-01-15T23:59:59.000Z

29

A review of "Hatred in Print: Catholic Propaganda and Protestant Identity During the French Wars of Religion." by Luc Racaut.  

E-Print Network [OSTI]

34 SEVENTEENTH-CENTURY NEWS Luc Racaut. Hatred in Print: Catholic Propaganda and Protestant Iden- tity During the French Wars of Religion. Aldershot, England: Ashgate, 2002. 161 pp. Review by ALISA PLANT, TULANE UNIVERSITY. In this suggestive... to this question. He persuasively argues that, unlike the German Reformation, in which Protestants gained an early and decisive control of printed media, the French Reformation was marked by the dominance of conservative, if not reactionary, forces. Well be...

Alisa Plant

2003-01-01T23:59:59.000Z

30

Compressed Gas EHS-2200-WEB  

E-Print Network [OSTI]

Compressed Gas Safety EHS-2200-WEB Register and launch through http://axess.stanford.edu Course title and STARS number: General Safety & Emergency Preparedness EHS-4200-WEB Chemical Safety for Laboratories EHS-1900-WEB Biosafety EHS-1500-WEB Radiation Safety Training EHS-5250 Laser Safety EHS-4820-WEB

31

Sequential Compressed Sensing  

E-Print Network [OSTI]

Compressed sensing allows perfect recovery of sparse signals (or signals sparse in some basis) using only a small number of random measurements. Existing results in compressed sensing literature have focused on characterizing ...

Malioutov, Dmitry M.

32

Compressed gas manifold  

DOE Patents [OSTI]

A compressed gas storage cell interconnecting manifold including a thermally activated pressure relief device, a manual safety shut-off valve, and a port for connecting the compressed gas storage cells to a motor vehicle power source and to a refueling adapter. The manifold is mechanically and pneumatically connected to a compressed gas storage cell by a bolt including a gas passage therein.

Hildebrand, Richard J. (Edgemere, MD); Wozniak, John J. (Columbia, MD)

2001-01-01T23:59:59.000Z

33

Hydrogen Delivery Liquefaction and Compression  

Broader source: Energy.gov [DOE]

Hydrogen Delivery Liquefaction and Compression - Overview of commercial hydrogen liquefaction and compression and opportunities to improve efficiencies and reduce cost.

34

Compressed Gas Safety for Experimental Fusion Facilities  

SciTech Connect (OSTI)

Experimental fusion facilities present a variety of hazards to the operators and staff. There are unique or specialized hazards, including magnetic fields, cryogens, radio frequency emissions, and vacuum reservoirs. There are also more general industrial hazards, such as a wide variety of electrical power, pressurized air and cooling water systems in use, there are crane and hoist loads, working at height, and handling compressed gas cylinders. This paper outlines the projectile hazard associated with compressed gas cylinders and methods of treatment to provide for compressed gas safety. This information should be of interest to personnel at both magnetic and inertial fusion experiments.

Cadwallader, L.C. [Idaho National Engineering and Environmental Laboratory (United States)

2005-05-15T23:59:59.000Z

35

Compressed Gas Safety for Experimental Fusion Facilities  

SciTech Connect (OSTI)

Experimental fusion facilities present a variety of hazards to the operators and staff. There are unique or specialized hazards, including magnetic fields, cryogens, radio frequency emissions, and vacuum reservoirs. There are also more general industrial hazards, such as a wide variety of electrical power, pressurized air, and cooling water systems in use, there are crane and hoist loads, working at height, and handling compressed gas cylinders. This paper outlines the projectile hazard assoicated with compressed gas cylinders and mthods of treatment to provide for compressed gas safety. This information should be of interest to personnel at both magnetic and inertial fusion experiments.

Lee C. Cadwallader

2004-09-01T23:59:59.000Z

36

Hydrogen Delivery Liquefaction & Compression  

E-Print Network [OSTI]

Hydrogen Delivery Liquefaction & Compression Raymond Drnevich Praxair - Tonawanda, NY Strategic Initiatives for Hydrogen Delivery Workshop - May 7, 2003 #12;2 Agenda Introduction to Praxair Hydrogen Liquefaction Hydrogen Compression #12;3 Praxair at a Glance The largest industrial gas company in North

37

LAPPED TRANSFORMS COMPRESSION  

E-Print Network [OSTI]

Chapter 6 LAPPED TRANSFORMS FOR IMAGE COMPRESSION Ricardo L. de Queiroz Digital Imaging Technology aspects of lapped transforms and their applications to image compression. It is a subject that has been extensively studied mainly because lapped transforms are closely related to filter banks, wavelets, and time

de Queiroz, Ricardo L.

38

Fundamentals of Compressed Air Systems  

Broader source: Energy.gov [DOE]

Find out how a compressed air system works and the benefits of optimal compressed air system performance. This initial class demonstrates how to compute the current cost of your plant's compressed...

39

A Compressed Air Reduction Program  

E-Print Network [OSTI]

A COMPRESSED AIR REDUCTION PROGRAM K. Dwight Hawks General Motors Corporation - Ruick-Oldsmobi1e-Cadillac Group Warren, Michigan ABSTRACT The reascn for implementing this program was to assist the plant in Quantifying some of its leaks... in the equipme~t throuqhout the plant and to provide direction as to which leaks are yenerat~ng high uti 1ity costs. The direction is very beneficial in lIlaking maintenance aware of prolill,Pls within equipment .IS \\Iell as notifying them as to whf're thei...

Hawks, K. D.

40

Compressed Gas Cylinder Safety I. Background. Due to the nature  

E-Print Network [OSTI]

Compressed Gas Cylinder Safety I. Background. Due to the nature of gas cylinders hazards of a ruptured cylinder. There are almost 200 different types of materials in gas cylinders, there are several general procedures to follow for safe storage and handling of a compressed gas cylinder: II

Suzuki, Masatsugu

Note: This page contains sample records for the topic "luc general compression" 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

Modeling Compressed Turbulence  

SciTech Connect (OSTI)

From ICE to ICF, the effect of mean compression or expansion is important for predicting the state of the turbulence. When developing combustion models, we would like to know the mix state of the reacting species. This involves density and concentration fluctuations. To date, research has focused on the effect of compression on the turbulent kinetic energy. The current work provides constraints to help development and calibration for models of species mixing effects in compressed turbulence. The Cambon, et al., re-scaling has been extended to buoyancy driven turbulence, including the fluctuating density, concentration, and temperature equations. The new scalings give us helpful constraints for developing and validating RANS turbulence models.

Israel, Daniel M. [Los Alamos National Laboratory

2012-07-13T23:59:59.000Z

42

Consider Compressed Combustion  

E-Print Network [OSTI]

, and costs. In addition, overall advantages for applications involving energy sharing, such as cogeneration are even greater. Thus, compressed combustion should be considered seriously as an economical alternative to conventional heaters, especially in energy...

Crowther, R. H.

1982-01-01T23:59:59.000Z

43

Padding with Compressed Air  

E-Print Network [OSTI]

We commonly find plants using padding to transport liquids or light solids short distances from tankers into storage tanks. Padding can wreck havoc in compressed air systems with limited storage, undersized cleanup equipment (dryers and filters...

Beals, C.

2004-01-01T23:59:59.000Z

44

Mechanical Compression Heat Pumps  

E-Print Network [OSTI]

MECHANICAL COMPRESSION HEAT PUMPS Thomas-L. Apaloo and K. Kawamura Mycom Corporation, Los Angeles, California J. Matsuda, Mayekawa Mfg. Co., Tokyo, Japan ABSTRACT Mechanical compression heat pumping is not new in industrial applications.... In fact, industry history suggests that the theoretical concept was developed before 1825. Heat pump manufacturers gained the support of consultants and end-users when the energy crisis hit this country in 1973. That interest, today, has been...

Apaloo, T. L.; Kawamura, K.; Matsuda, J.

45

Image compression technique  

DOE Patents [OSTI]

An image is compressed by identifying edge pixels of the image; creating a filled edge array of pixels each of the pixels in the filled edge array which corresponds to an edge pixel having a value equal to the value of a pixel of the image array selected in response to the edge pixel, and each of the pixels in the filled edge array which does not correspond to an edge pixel having a value which is a weighted average of the values of surrounding pixels in the filled edge array which do correspond to edge pixels; and subtracting the filled edge array from the image array to create a difference array. The edge file and the difference array are then separately compressed and transmitted or stored. The original image is later reconstructed by creating a preliminary array in response to the received edge file, and adding the preliminary array to the received difference array. Filling is accomplished by solving Laplace`s equation using a multi-grid technique. Contour and difference file coding techniques also are described. The techniques can be used in a method for processing a plurality of images by selecting a respective compression approach for each image, compressing each of the images according to the compression approach selected, and transmitting each of the images as compressed, in correspondence with an indication of the approach selected for the image. 16 figs.

Fu, C.Y.; Petrich, L.I.

1997-03-25T23:59:59.000Z

46

Fuel-Free Compressed-Air Energy Storage: Fuel-Free, Ubiquitous Compressed-Air Energy Storage and Power Conditioning  

SciTech Connect (OSTI)

GRIDS Project: General Compression has developed a transformative, near-isothermal compressed air energy storage system (GCAES) that prevents air from heating up during compression and cooling down during expansion. When integrated with renewable generation, such as a wind farm, intermittent energy can be stored in compressed air in salt caverns or pressurized tanks. When electricity is needed, the process is reversed and the compressed air is expanded to produce electricity. Unlike conventional compressed air energy storage (CAES) projects, no gas is burned to convert the stored high-pressure air back into electricity. The result of this breakthrough is an ultra-efficient, fully shapeable, 100% renewable and carbon-free power product. The GCAES™ system can provide high quality electricity and ancillary services by effectively integrating renewables onto the grid at a cost that is competitive with gas, coal and nuclear generation.

None

2010-09-13T23:59:59.000Z

47

Variable valve timing in a homogenous charge compression ignition engine  

DOE Patents [OSTI]

The present invention relates generally to the field of homogenous charge compression ignition engines, in which fuel is injected when the cylinder piston is relatively close to the bottom dead center position for its compression stroke. The fuel mixes with air in the cylinder during the compression stroke to create a relatively lean homogeneous mixture that preferably ignites when the piston is relatively close to the top dead center position. However, if the ignition event occurs either earlier or later than desired, lowered performance, engine misfire, or even engine damage, can result. The present invention utilizes internal exhaust gas recirculation and/or compression ratio control to control the timing of ignition events and combustion duration in homogeneous charge compression ignition engines. Thus, at least one electro-hydraulic assist actuator is provided that is capable of mechanically engaging at least one cam actuated intake and/or exhaust valve.

Lawrence, Keith E.; Faletti, James J.; Funke, Steven J.; Maloney, Ronald P.

2004-08-03T23:59:59.000Z

48

Wavelet/scalar quantization compression standard for fingerprint images  

SciTech Connect (OSTI)

US Federal Bureau of Investigation (FBI) has recently formulated a national standard for digitization and compression of gray-scale fingerprint images. Fingerprints are scanned at a spatial resolution of 500 dots per inch, with 8 bits of gray-scale resolution. The compression algorithm for the resulting digital images is based on adaptive uniform scalar quantization of a discrete wavelet transform subband decomposition (wavelet/scalar quantization method). The FBI standard produces archival-quality images at compression ratios of around 15 to 1 and will allow the current database of paper fingerprint cards to be replaced by digital imagery. The compression standard specifies a class of potential encoders and a universal decoder with sufficient generality to reconstruct compressed images produced by any compliant encoder, allowing flexibility for future improvements in encoder technology. A compliance testing program is also being implemented to ensure high standards of image quality and interchangeability of data between different implementations.

Brislawn, C.M.

1996-06-12T23:59:59.000Z

49

Compressed Air Energy Storage System  

E-Print Network [OSTI]

/expanders are crucial for the economical viability of a Compressed Air Energy Storage (CAES) system such as the

Farzad A. Shirazi; Mohsen Saadat; Bo Yan; Perry Y. Li; Terry W. Simon

50

Compressive Rendering of Multidimensional Scenes  

E-Print Network [OSTI]

Compressive Rendering of Multidimensional Scenes Pradeep Sen, Soheil Darabi, and Lei Xiao Advanced of using compressed sensing to reconstruct the 2D images produced by a rendering system, a process we called compressive rendering. In this work, we present the natural extension of this idea

Sen, Pradeep

51

Hydrogen Compression, Storage, and Dispensing Cost Reduction...  

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

Compression, Storage, and Dispensing Cost Reduction Workshop Addendum Hydrogen Compression, Storage, and Dispensing Cost Reduction Workshop Addendum Document states additional...

52

Finding Structure via Compression Jason L. Hutchens  

E-Print Network [OSTI]

Structurevia Compression Jason L. Hutchens and Michael D. Alder (1998) Finding Structure via Compression. In D.M.W

53

Effect of three-dimensionality on compressible mixing  

SciTech Connect (OSTI)

Existing experimental data and hypotheses on the growth rates of compressible and incompressible turbulent shear layers are used to estimate the effect of three-dimensionality in the turbulent mixing enhancement in compressible shear flows that is critically important to the efficiency of scramjet powerplants. The general trend is found to be a decrease in growth rate with increasing three-dimensionality, excepting only the restricted regime, where the growth-rate increase is modest. 9 refs.

Papamoschou, D. (California, University, Irvine (United States))

1992-02-01T23:59:59.000Z

54

Homogenous charge compression ignition engine having a cylinder including a high compression space  

DOE Patents [OSTI]

The present invention relates generally to the field of homogeneous charge compression engines. In these engines, fuel is injected upstream or directly into the cylinder when the power piston is relatively close to its bottom dead center position. The fuel mixes with air in the cylinder as the power piston advances to create a relatively lean homogeneous mixture that preferably ignites when the power piston is relatively close to the top dead center position. However, if the ignition event occurs either earlier or later than desired, lowered performance, engine misfire, or even engine damage, can result. Thus, the present invention divides the homogeneous charge between a controlled volume higher compression space and a lower compression space to better control the start of ignition.

Agama, Jorge R.; Fiveland, Scott B.; Maloney, Ronald P.; Faletti, James J.; Clarke, John M.

2003-12-30T23:59:59.000Z

55

Shock compression of precompressed deuterium  

SciTech Connect (OSTI)

Here we report quasi-isentropic dynamic compression and thermodynamic characterization of solid, precompressed deuterium over an ultrafast time scale (< 100 ps) and a microscopic length scale (< 1 {micro}m). We further report a fast transition in shock wave compressed solid deuterium that is consistent with the ramp to shock transition, with a time scale of less than 10 ps. These results suggest that high-density dynamic compression of hydrogen may be possible on microscopic length scales.

Armstrong, M R; Crowhurst, J C; Zaug, J M; Bastea, S; Goncharov, A F; Militzer, B

2011-07-31T23:59:59.000Z

56

Making Compressed Air System Decisions  

E-Print Network [OSTI]

spawned an entire industry dedicated to manufacturing equipment designed to remove moisture, lubricant, particulate and vapor contaminants from compressed air. Purification equipment, such as air dryers and filters, are used alone or in combination... to reduce the amount of contaminants in the compressed air to the desired purity. All compressed ESL-IE-96-04-32 Proceedings from the Eighteenth Industrial Energy Technology Conference, Houston, TX, April 17-18, 1996 air purification equipment requires...

Porri, R. E.

57

ECG Compression: Fast Block-Sorting Compression John Halloran  

E-Print Network [OSTI]

ECG Compression: Fast Block-Sorting Compression John Halloran Department of Electrical Engineering University of Hawaii at Manoa EE 628 Fall 2008 April 13, 2010 1 Introduction Electrocardiography(ECG. Given ECG data, a patient may be diagnosed with health issues such as a heart attack or improper levels

Noble, William Stafford

58

Data Compression with Prime Numbers  

E-Print Network [OSTI]

A compression algorithm is presented that uses the set of prime numbers. Sequences of numbers are correlated with the prime numbers, and labeled with the integers. The algorithm can be iterated on data sets, generating factors of doubles on the compression.

Gordon Chalmers

2005-11-16T23:59:59.000Z

59

Edge compression manifold apparatus  

DOE Patents [OSTI]

A manifold for connecting external capillaries to the inlet and/or outlet ports of a microfluidic device for high pressure applications is provided. The fluid connector for coupling at least one fluid conduit to a corresponding port of a substrate that includes: (i) a manifold comprising one or more channels extending therethrough wherein each channel is at least partially threaded, (ii) one or more threaded ferrules each defining a bore extending therethrough with each ferrule supporting a fluid conduit wherein each ferrule is threaded into a channel of the manifold, (iii) a substrate having one or more ports on its upper surface wherein the substrate is positioned below the manifold so that the one or more ports is aligned with the one or more channels of the manifold, and (iv) device to apply an axial compressive force to the substrate to couple the one or more ports of the substrate to a corresponding proximal end of a fluid conduit.

Renzi, Ronald F. (Tracy, CA)

2007-02-27T23:59:59.000Z

60

Premix charge, compression ignition combustion system optimization...  

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

Premix charge, compression ignition combustion system optimization Premix charge, compression ignition combustion system optimization Presentation given at DEER 2006, August 20-24,...

Note: This page contains sample records for the topic "luc general compression" 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

Advances in compressible turbulent mixing  

SciTech Connect (OSTI)

This volume includes some recent additions to original material prepared for the Princeton International Workshop on the Physics of Compressible Turbulent Mixing, held in 1988. Workshop participants were asked to emphasize the physics of the compressible mixing process rather than measurement techniques or computational methods. Actual experimental results and their meaning were given precedence over discussions of new diagnostic developments. Theoretical interpretations and understanding were stressed rather than the exposition of new analytical model developments or advances in numerical procedures. By design, compressibility influences on turbulent mixing were discussed--almost exclusively--from the perspective of supersonic flow field studies. The papers are arranged in three topical categories: Foundations, Vortical Domination, and Strongly Coupled Compressibility. The Foundations category is a collection of seminal studies that connect current study in compressible turbulent mixing with compressible, high-speed turbulent flow research that almost vanished about two decades ago. A number of contributions are included on flow instability initiation, evolution, and transition between the states of unstable flow onset through those descriptive of fully developed turbulence. The Vortical Domination category includes theoretical and experimental studies of coherent structures, vortex pairing, vortex-dynamics-influenced pressure focusing. In the Strongly Coupled Compressibility category the organizers included the high-speed turbulent flow investigations in which the interaction of shock waves could be considered an important source for production of new turbulence or for the enhancement of pre-existing turbulence. Individual papers are processed separately.

Dannevik, W.P.; Buckingham, A.C.; Leith, C.E. [eds.

1992-01-01T23:59:59.000Z

62

Best compression: Reciprocating or rotary?  

SciTech Connect (OSTI)

A compressor is a device used to increase the pressure of a compressible fluid. The inlet pressure can vary from a deep vacuum to a high positive pressure. The discharge pressure can range from subatmospheric levels to tens of thousands of pounds per square inch. Compressors come in numerous forms, but for oilfield applications there are two primary types, reciprocating and rotary. Both reciprocating and rotary compressors are grouped in the intermittent mode of compression. Intermittent is cyclic in nature, in that a specific quantity of gas is ingested by the compressor, acted upon and discharged before the cycle is repeated. Reciprocating compression is the most common form of compression used for oilfield applications. Rotary screw compressors have a long history but are relative newcomers to oilfield applications. The rotary screw compressor-technically a helical rotor compressor-dates back to 1878. That was when the first rotary screw was manufactured for the purpose of compressing air. Today thousands of rotary screw compression packages are being used throughout the world to compress natural gas.

Cahill, C.

1997-07-01T23:59:59.000Z

63

A high-resolution mapped grid algorithm for compressible multiphase flow problems  

E-Print Network [OSTI]

A high-resolution mapped grid algorithm for compressible multiphase flow problems K.-M. Shyue mapped grid approach for the efficient numerical simula- tion of compressible multiphase flow in general problems, J. Comput. Phys. 142 (1998) 208-242). A standard high-resolution mapped grid method in wave

Shyue, Keh-Ming

64

Compressed Air 101: Getting Compressed Air to Work  

E-Print Network [OSTI]

plant energy use. Furthermore, air compression is inefficient with up to 95% of compressor power dissipated as heat. Thus even minor improvements in system operation, control strategies, and efficiency can yield large energy savings and significant non-energy...

Burke, J. J.; Bessey, E. G.

65

SPH compressible turbulence  

E-Print Network [OSTI]

In this paper an SPH version of the alpha turbulence model devised by Holm and his colleagues is formulated for compressible flow with a resolution that varies in space and time. The alpha model involves two velocity fields. One velocity field is obtained from the momentum equation, the other by averaging this velocity field as in the version of SPH called XSPH. The particles (fluid elements) are moved with the averaged velocity. In analogy to the continuum alpha model we obtain a particle Lagrangian from which the SPH alpha equations can be derived. The system satisfies a discrete Kelvin circulation theorem identical to that obtained with no velocity averaging. In addition, the energy, linear and angular momentum are conserved. We show that the continuum equivalent of the SPH equations are identical to the continuum alpha model, and we conjecture that they will have the same desirable features of the continuum modelincluding the reduction of energy in the high wave number modes even when the dissipation is zero. Regardless of issues concerning turbulence modelling, the SPH alpha model is a powerful extension of the XSPH algorithm which reduces disorder at short length scales and retains the constants of the motion. The SPH alpha model is simple to implement.

J. J. Monaghan

2002-04-08T23:59:59.000Z

66

Compressed gas fuel storage system  

DOE Patents [OSTI]

A compressed gas vehicle fuel storage system comprised of a plurality of compressed gas pressure cells supported by shock-absorbing foam positioned within a shape-conforming container. The container is dimensioned relative to the compressed gas pressure cells whereby a radial air gap surrounds each compressed gas pressure cell. The radial air gap allows pressure-induced expansion of the pressure cells without resulting in the application of pressure to adjacent pressure cells or physical pressure to the container. The pressure cells are interconnected by a gas control assembly including a thermally activated pressure relief device, a manual safety shut-off valve, and means for connecting the fuel storage system to a vehicle power source and a refueling adapter. The gas control assembly is enclosed by a protective cover attached to the container. The system is attached to the vehicle with straps to enable the chassis to deform as intended in a high-speed collision.

Wozniak, John J. (Columbia, MD); Tiller, Dale B. (Lincoln, NE); Wienhold, Paul D. (Baltimore, MD); Hildebrand, Richard J. (Edgemere, MD)

2001-01-01T23:59:59.000Z

67

A rigorous compressible streamline formulation for black oil and compositional simulation  

E-Print Network [OSTI]

In this study for the first time we generalize streamline models to compressible flow using a rigorous formulation while retaining most of its computational advantages. Our new formulation is based on three major elements and requires only minor...

Osako, Ichiro

2007-04-25T23:59:59.000Z

68

PERFORMANCE STUDY OF COMPRESSIVE SAMPLING FOR ECG SIGNAL COMPRESSION IN NOISY AND VARYING SPARSITY ACQUISITION  

E-Print Network [OSTI]

PERFORMANCE STUDY OF COMPRESSIVE SAMPLING FOR ECG SIGNAL COMPRESSION IN NOISY AND VARYING SPARSITY of compressive sam- pling (CS) for ECG compression in telecardiology, when the signal acquisition is noisy transform (TH-DWT), which is the best technique for real-time ECG compression. We show that CS is quite

Durrani, Salman

69

A compression scheme for radio data in high performance computing  

E-Print Network [OSTI]

We present a procedure for efficiently compressing astronomical radio data for high performance applications. Integrated, post-correlation data are first passed through a nearly lossless rounding step which compares the precision of the data to a generalized and calibration-independent form of the radiometer equation. This allows the precision of the data to be reduced in a way that has an insignificant impact on the data. The newly developed Bitshuffle lossless compression algorithm is subsequently applied. When the algorithm is used in conjunction with the HDF5 library and data format, data produced by the CHIME Pathfinder telescope is compressed to 28% of its original size and decompression throughputs in excess of 1 GB/s are obtained on a single core.

Masui, Kiyoshi; Connor, Liam; Deng, Meiling; Fandino, Mateus; Höfer, Carolin; Halpern, Mark; Hanna, David; Hincks, Adam D; Hinshaw, Gary; Parra, Juan Mena; Newburgh, Laura B; Shaw, J Richard; Vanderlinde, Keith

2015-01-01T23:59:59.000Z

70

Investing in Our Energy Future: The Story of General Compression  

Broader source: Energy.gov [DOE]

What does government funding mean to a small clean energy startup? In the case of many small businesses across the country, it means being able to secure the private capital necessary to bring their innovations to life.

71

Compact wavefunctions from compressed imaginary time evolution  

E-Print Network [OSTI]

Simulation of quantum systems promises to deliver physical and chemical predictions for the frontiers of technology. Unfortunately, the exact representation of these systems is plagued by the exponential growth of dimension with the number of particles, or colloquially, the curse of dimensionality. The success of approximation methods has hinged on the relative simplicity of physical systems with respect to the exponentially complex worst case. Exploiting this relative simplicity has required detailed knowledge of the physical system under study. In this work, we introduce a general and efficient black box method for many-body quantum systems that utilizes technology from compressed sensing to find the most compact wavefunction possible without detailed knowledge of the system. It is a Multicomponent Adaptive Greedy Iterative Compression (MAGIC) scheme. No knowledge is assumed in the structure of the problem other than correct particle statistics. This method can be applied to many quantum systems such as spins, qubits, oscillators, or electronic systems. As an application, we use this technique to compute ground state electronic wavefunctions of hydrogen fluoride and recover 98% of the basis set correlation energy or equivalently 99.996% of the total energy with $50$ configurations out of a possible $10^7$. Building from this compactness, we introduce the idea of nuclear union configuration interaction for improving the description of reaction coordinates and use it to study the dissociation of hydrogen fluoride and the helium dimer.

Jarrod R. McClean; Alán Aspuru-Guzik

2014-09-25T23:59:59.000Z

72

Compressive Video Classification for Decision Systems with Limited Resources  

E-Print Network [OSTI]

by the introduction of efficient computational models is video classification. With the advent of digital TVCompressive Video Classification for Decision Systems with Limited Resources George Tzagkarakis, Pavlos Charalampidis, Grigorios Tsagkatakis, Jean-Luc Starck, and Panagiotis Tsakalides Commissariat `a l'ÂŽEnergie

Tsakalides, Panagiotis

73

Cryo-Compressed Hydrogen Storage: Performance and Cost Review...  

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

Compressed Hydrogen Storage: Performance and Cost Review Cryo-Compressed Hydrogen Storage: Performance and Cost Review Presented at the R&D Strategies for Compressed,...

74

Effect of Compression Ratio and Piston Geometry on RCCI load...  

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

Compression Ratio and Piston Geometry on RCCI load limit Effect of Compression Ratio and Piston Geometry on RCCI load limit Explores the effect of compression ratio and piston...

75

Mechanical compression attenuates normal human bronchial epithelial wound healing  

E-Print Network [OSTI]

Open Access Research Mechanical compression attenuatesto the application of mechanical compression in the presenceResults: We found that mechanical compression and scrape

Arold, Stephen P.; Malavia, Nikita; George, Steven C.

2009-01-01T23:59:59.000Z

76

Forecourt Storage and Compression Options  

E-Print Network [OSTI]

capital costs and maximize utilization NATURAL GAS & HYDROGEN FUELING STATION SIZING SOFTWARE Developed 510 520 530 540 Minutes Bank1 Bank2 Bank3 Cascade Banks Pressure Vs.Time (Hydrogen) #12;16 Compressor> Forecourt Storage and Compression Options DOE and FreedomCAR & Fuel Partnership Hydrogen Delivery

77

Technical Assessment: Cryo-Compressed Hydrogen Storage  

E-Print Network [OSTI]

Technical Assessment: Cryo-Compressed Hydrogen Storage for Vehicular Applications October 30, 2006 .....................................................................................................................................................................8 APPENDIX A: Review of Cryo-Compressed Hydrogen Storage Systems ......................................................................................18 APPENDIX C: Presentation to the FreedomCAR & Fuel Hydrogen Storage Technical Team

78

Advanced Management of Compressed Air Systems  

Office of Energy Efficiency and Renewable Energy (EERE)

Find out how a compressed air system works and the benefits of optimal compressed air system performance. This training is designed to help end users as well as industry solution providers learn...

79

Compressed Air Energy Storage for Offshore  

E-Print Network [OSTI]

transmitting peak power levels. A solution to these issues is a novel high-efficiency compressed air energy

Perry Y. Li; Eric Loth; Terrence W. Simon; James D. Van De Ven; Stephen E. Crane

2011-01-01T23:59:59.000Z

80

Outline Inverted File Building Compression for Inverted Files Building and Compression Techniques for Inverted  

E-Print Network [OSTI]

Outline Inverted File Building Compression for Inverted Files Building and Compression Techniques for Inverted Files Roi Blanco Dpt. Computing Science, University of A Coruna December 13, 2005 Roi Blanco Building and Compression Techniques for Inverted Files #12;Outline Inverted File Building Compression

Barreiro, Alvaro

Note: This page contains sample records for the topic "luc general compression" 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

ADVANCED RECIPROCATING COMPRESSION TECHNOLOGY (ARCT)  

SciTech Connect (OSTI)

The U.S. natural gas pipeline industry is facing the twin challenges of increased flexibility and capacity expansion. To meet these challenges, the industry requires improved choices in gas compression to address new construction and enhancement of the currently installed infrastructure. The current fleet of installed reciprocating compression is primarily slow-speed integral machines. Most new reciprocating compression is and will be large, high-speed separable units. The major challenges with the fleet of slow-speed integral machines are: limited flexibility and a large range in performance. In an attempt to increase flexibility, many operators are choosing to single-act cylinders, which are causing reduced reliability and integrity. While the best performing units in the fleet exhibit thermal efficiencies between 90% and 92%, the low performers are running down to 50% with the mean at about 80%. The major cause for this large disparity is due to installation losses in the pulsation control system. In the better performers, the losses are about evenly split between installation losses and valve losses. The major challenges for high-speed machines are: cylinder nozzle pulsations, mechanical vibrations due to cylinder stretch, short valve life, and low thermal performance. To shift nozzle pulsation to higher orders, nozzles are shortened, and to dampen the amplitudes, orifices are added. The shortened nozzles result in mechanical coupling with the cylinder, thereby, causing increased vibration due to the cylinder stretch mode. Valve life is even shorter than for slow speeds and can be on the order of a few months. The thermal efficiency is 10% to 15% lower than slow-speed equipment with the best performance in the 75% to 80% range. The goal of this advanced reciprocating compression program is to develop the technology for both high speed and low speed compression that will expand unit flexibility, increase thermal efficiency, and increase reliability and integrity. Retrofit technologies that address the challenges of slow-speed integral compression are: (1) optimum turndown using a combination of speed and clearance with single-acting operation as a last resort; (2) if single-acting is required, implement infinite length nozzles to address nozzle pulsation and tunable side branch absorbers for 1x lateral pulsations; and (3) advanced valves, either the semi-active plate valve or the passive rotary valve, to extend valve life to three years with half the pressure drop. This next generation of slow-speed compression should attain 95% efficiency, a three-year valve life, and expanded turndown. New equipment technologies that address the challenges of large-horsepower, high-speed compression are: (1) optimum turndown with unit speed; (2) tapered nozzles to effectively reduce nozzle pulsation with half the pressure drop and minimization of mechanical cylinder stretch induced vibrations; (3) tunable side branch absorber or higher-order filter bottle to address lateral piping pulsations over the entire extended speed range with minimal pressure drop; and (4) semi-active plate valves or passive rotary valves to extend valve life with half the pressure drop. This next generation of large-horsepower, high-speed compression should attain 90% efficiency, a two-year valve life, 50% turndown, and less than 0.75 IPS vibration. This program has generated proof-of-concept technologies with the potential to meet these ambitious goals. Full development of these identified technologies is underway. The GMRC has committed to pursue the most promising enabling technologies for their industry.

Danny M. Deffenbaugh; Klaus Brun; Ralph E. Harris; J. Pete Harrell; Robert J. Mckee; J. Jeffrey Moore; Steven J. Svedeman; Anthony J. Smalley; Eugene L. Broerman; Robert A Hart; Marybeth G. Nored; Ryan S. Gernentz; Shane P. Siebenaler

2005-12-01T23:59:59.000Z

82

FINITE RATE OF INNOVATION BASED MODELING AND COMPRESSION OF ECG G. Baechler N. Freris R.F. Quick  

E-Print Network [OSTI]

FINITE RATE OF INNOVATION BASED MODELING AND COMPRESSION OF ECG SIGNALS G. Baechler N. Freris R and compress ECG signals. This technique generalizes classical FRI estimation to enable the use of a sum of asym- metric Cauchy-based pulses for modeling electrocardiogram (ECG) signals. We experimentally show

Dalang, Robert C.

83

Compressed Air Audits using AIRMaster  

E-Print Network [OSTI]

&M measures. An introduction to the AIRMaster software is provided. Goals The project goals were to develop and test a method and tools to perform Compressed Air System audits. The audits should use only simple instrumentation during a relatively short... air system leaks. 2. AIRMaster Software and User's Manual. AIRMaster is a spreadsheet-based program that can model part load system operation with up to five rotary screw and reciprocating compressors operating simultaneously with varying...

Wheeler, G. M.; McGill, R. D.; Bessey, E. G.; Vischer, K.

84

Compressed air energy storage system  

DOE Patents [OSTI]

An internal combustion reciprocating engine is operable as a compressor during slack demand periods utilizing excess power from a power grid to charge air into an air storage reservoir and as an expander during peak demand periods to feed power into the power grid utilizing air obtained from the air storage reservoir together with combustible fuel. Preferably the internal combustion reciprocating engine is operated at high pressure and a low pressure turbine and compressor are also employed for air compression and power generation.

Ahrens, Frederick W. (Naperville, IL); Kartsounes, George T. (Naperville, IL)

1981-01-01T23:59:59.000Z

85

Chapter 22: Compressed Air Evaluation Protocol  

SciTech Connect (OSTI)

Compressed-air systems are used widely throughout industry for many operations, including pneumatic tools, packaging and automation equipment, conveyors, and other industrial process operations. Compressed-air systems are defined as a group of subsystems composed of air compressors, air treatment equipment, controls, piping, pneumatic tools, pneumatically powered machinery, and process applications using compressed air. A compressed-air system has three primary functional subsystems: supply, distribution, and demand. Air compressors are the primary energy consumers in a compressed-air system and are the primary focus of this protocol. The two compressed-air energy efficiency measures specifically addressed in this protocol are: high-efficiency/variable speed drive (VSD) compressor replacing modulating compressor; compressed-air leak survey and repairs. This protocol provides direction on how to reliably verify savings from these two measures using a consistent approach for each.

Benton, N.

2014-11-01T23:59:59.000Z

86

Industrial Compressed Air System Energy Efficiency Guidebook.  

SciTech Connect (OSTI)

Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

United States. Bonneville Power Administration.

1993-12-01T23:59:59.000Z

87

Eccentric crank variable compression ratio mechanism  

DOE Patents [OSTI]

A variable compression ratio mechanism for an internal combustion engine that has an engine block and a crankshaft is disclosed. The variable compression ratio mechanism has a plurality of eccentric disks configured to support the crankshaft. Each of the plurality of eccentric disks has at least one cylindrical portion annularly surrounded by the engine block. The variable compression ratio mechanism also has at least one actuator configured to rotate the plurality of eccentric disks.

Lawrence, Keith Edward (Kobe, JP); Moser, William Elliott (Peoria, IL); Roozenboom, Stephan Donald (Washington, IL); Knox, Kevin Jay (Peoria, IL)

2008-05-13T23:59:59.000Z

88

CULTURAL RATCHETING RESULTS PRIMARILY FROM SEMANTIC COMPRESSION  

E-Print Network [OSTI]

CULTURAL RATCHETING RESULTS PRIMARILY FROM SEMANTIC COMPRESSION JOANNA J. BRYSON Artificial Models that cultural ratcheting requires the communication of beliefs about #12;hypotheses. Clearly, cultural

Bryson, Joanna J.

89

Energy efficiency improvements in Chinese compressed airsystems  

SciTech Connect (OSTI)

Industrial compressed air systems use more than 9 percent ofall electricity used in China. Experience in China and elsewhere hasshown that these systems can be much more energy efficient when viewed asa whole system and rather than as isolated components.This paper presentsa summary and analysis of several compressed air system assessments.Through these assessments, typical compressed air management practices inChina are analyzed. Recommendations are made concerning immediate actionsthat China s enterprises can make to improve compressed air systemefficiency using best available technology and managementstrategies.

McKane, Aimee; Li, Li; Li, Yuqi; Taranto, T.

2007-06-01T23:59:59.000Z

90

Compressed Air Energy Storage Act (Kansas)  

Broader source: Energy.gov [DOE]

This act lays out regulations for the local authorities related to site selection, design, operation and monitoring for underground storage of compressed air.

91

High Efficiency Fuel Reactivity Controlled Compression Ignition...  

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

& Publications Effect of Compression Ratio and Piston Geometry on RCCI load limit Optimization of Advanced Diesel Engine Combustion Strategies Vehicle Technologies Office Merit...

92

Optimization Online - Compressed Sensing Off the Grid  

E-Print Network [OSTI]

Sep 13, 2012 ... Compressed Sensing Off the Grid. Gongguo Tang(gtang5 ***at*** wisc.edu) Badri Narayan Bhaskar(bnbhaskar ***at*** wisc.edu) Parikshit ...

Gongguo Tang

2012-09-13T23:59:59.000Z

93

A New Approach for Fingerprint Image Compression  

SciTech Connect (OSTI)

The FBI has been collecting fingerprint cards since 1924 and now has over 200 million of them. Digitized with 8 bits of grayscale resolution at 500 dots per inch, it means 2000 terabytes of information. Also, without any compression, transmitting a 10 Mb card over a 9600 baud connection will need 3 hours. Hence we need a compression and a compression as close to lossless as possible: all fingerprint details must be kept. A lossless compression usually do not give a better compression ratio than 2:1, which is not sufficient. Compressing these images with the JPEG standard leads to artefacts which appear even at low compression rates. Therefore the FBI has chosen in 1993 a scheme of compression based on a wavelet transform, followed by a scalar quantization and an entropy coding : the so-called WSQ. This scheme allows to achieve compression ratios of 20:1 without any perceptible loss of quality. The publication of the FBI specifies a decoder, which means that many parameters can be changed in the encoding process: the type of analysis/reconstruction filters, the way the bit allocation is made, the number of Huffman tables used for the entropy coding. The first encoder used 9/7 filters for the wavelet transform and did the bit allocation using a high-rate bit assumption. Since the transform is made into 64 subbands, quite a lot of bands receive only a few bits even at an archival quality compression rate of 0.75 bit/pixel. Thus, after a brief overview of the standard, we will discuss a new approach for the bit-allocation that seems to make more sense where theory is concerned. Then we will talk about some implementation aspects, particularly for the new entropy coder and the features that allow other applications than fingerprint image compression. Finally, we will compare the performances of the new encoder to those of the first encoder.

Mazieres, Bertrand

1997-12-01T23:59:59.000Z

94

Defect Analysis of Vehicle Compressed Natural Gas  

E-Print Network [OSTI]

Defect Analysis of Vehicle Compressed Natural Gas Composite Cylinder A China Paper on Type 4;Industrial Computed Tomography (CT) Examination of Composite Gas Cylinder #12;CT of 01-01 Layer at 4.8MPa during the gas compressing and releasing processes are the direct causes for liner defect - Since

95

Compressible fluid model for hydrodynamic lubrication cavitation  

E-Print Network [OSTI]

Compressible fluid model for hydrodynamic lubrication cavitation G. Bayada L. Chupin I.C.J. UMR.chupin@math.univ-bpclermont.fr Keywords: cavitation, compressible Reynolds equation Date: april 2013 Summary In this paper, it is shown how vaporous cavitation in lubricant films can be modelled in a physically justified manner through

Sart, Remi

96

Compression molding of aerogel microspheres  

DOE Patents [OSTI]

An aerogel composite material produced by compression molding of aerogel microspheres (powders) mixed together with a small percentage of polymer binder to form monolithic shapes in a cost-effective manner. The aerogel composites are formed by mixing aerogel microspheres with a polymer binder, placing the mixture in a mold and heating under pressure, which results in a composite with a density of 50-800 kg/m.sup.3 (0.05-0.80 g/cc). The thermal conductivity of the thus formed aerogel composite is below that of air, but higher than the thermal conductivity of monolithic aerogels. The resulting aerogel composites are attractive for applications such as thermal insulation since fabrication thereof does not require large and expensive processing equipment. In addition to thermal insulation, the aerogel composites may be utilized for filtration, ICF target, double layer capacitors, and capacitive deionization.

Pekala, Richard W. (Pleasant Hill, CA); Hrubesh, Lawrence W. (Pleasanton, CA)

1998-03-24T23:59:59.000Z

97

Compression molding of aerogel microspheres  

DOE Patents [OSTI]

An aerogel composite material produced by compression molding of aerogel microspheres (powders) mixed together with a small percentage of polymer binder to form monolithic shapes in a cost-effective manner is disclosed. The aerogel composites are formed by mixing aerogel microspheres with a polymer binder, placing the mixture in a mold and heating under pressure, which results in a composite with a density of 50--800 kg/m{sup 3} (0.05--0.80 g/cc). The thermal conductivity of the thus formed aerogel composite is below that of air, but higher than the thermal conductivity of monolithic aerogels. The resulting aerogel composites are attractive for applications such as thermal insulation since fabrication thereof does not require large and expensive processing equipment. In addition to thermal insulation, the aerogel composites may be utilized for filtration, ICF target, double layer capacitors, and capacitive deionization. 4 figs.

Pekala, R.W.; Hrubesh, L.W.

1998-03-24T23:59:59.000Z

98

Quantum Data Compression of a Qubit Ensemble  

E-Print Network [OSTI]

Data compression is a ubiquitous aspect of modern information technology, and the advent of quantum information raises the question of what types of compression are feasible for quantum data, where it is especially relevant given the extreme difficulty involved in creating reliable quantum memories. We present a protocol in which an ensemble of quantum bits (qubits) can in principle be perfectly compressed into exponentially fewer qubits. We then experimentally implement our algorithm, compressing three photonic qubits into two. This protocol sheds light on the subtle differences between quantum and classical information. Furthermore, since data compression stores all of the available information about the quantum state in fewer physical qubits, it could provide a vast reduction in the amount of quantum memory required to store a quantum ensemble, making even today's limited quantum memories far more powerful than previously recognized.

Lee A. Rozema; Dylan H. Mahler; Alex Hayat; Peter S. Turner; Aephraim M. Steinberg

2014-10-15T23:59:59.000Z

99

Secure Compressed Reading in Smart Grids  

E-Print Network [OSTI]

Smart Grids measure energy usage in real-time and tailor supply and delivery accordingly, in order to improve power transmission and distribution. For the grids to operate effectively, it is critical to collect readings from massively-installed smart meters to control centers in an efficient and secure manner. In this paper, we propose a secure compressed reading scheme to address this critical issue. We observe that our collected real-world meter data express strong temporal correlations, indicating they are sparse in certain domains. We adopt Compressed Sensing technique to exploit this sparsity and design an efficient meter data transmission scheme. Our scheme achieves substantial efficiency offered by compressed sensing, without the need to know beforehand in which domain the meter data are sparse. This is in contrast to traditional compressed-sensing based scheme where such sparse-domain information is required a priori. We then design specific dependable scheme to work with our compressed sensing based ...

Cai, Sheng; Chen, Minghua; Yan, Jianxin; Jaggi, Sidharth

2012-01-01T23:59:59.000Z

100

Open Issues in the Development of Safety Standards for Compressed...  

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

Issues in the Development of Safety Standards for Compressed Hydrogen Storage at SAE-International Open Issues in the Development of Safety Standards for Compressed Hydrogen...

Note: This page contains sample records for the topic "luc general compression" 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

Research and Development Strategies for Compressed & Cryo-Hydrogen...  

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

Strategies for Compressed & Cryo-Hydrogen Storage Systems - Workshop Summary Report Research and Development Strategies for Compressed & Cryo-Hydrogen Storage Systems - Workshop...

102

2013 Hydrogen Compression, Storage, and Dispensing Cost Reduction...  

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

Hydrogen Compression, Storage, and Dispensing Cost Reduction Workshop Final Report 2013 Hydrogen Compression, Storage, and Dispensing Cost Reduction Workshop Final Report...

103

Technical Assessment of Compressed Hydrogen Storage Tank Systems...  

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

Compressed Hydrogen Storage Tank Systems for Automotive Applications Technical Assessment of Compressed Hydrogen Storage Tank Systems for Automotive Applications Technical report...

104

Evaluation of the Compressed Air Challenge Training Program:...  

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

Executive Summary Evaluation of the Compressed Air Challenge Training Program: Executive Summary This is the executive summary of a report on an evaluation of the Compressed Air...

105

Evaluation of the Compressed Air Challenge Training Program:...  

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

Final Report Evaluation of the Compressed Air Challenge Training Program: Final Report This is the final report on an evaluation of the Compressed Air Challenge (CAC) training...

106

Workshop Agenda: Compressed Natural Gas and Hydrogen Fuels, Lesssons...  

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

Workshop Agenda: Compressed Natural Gas and Hydrogen Fuels, Lesssons Learned for the Safe Deployment of Vehicles Workshop Agenda: Compressed Natural Gas and Hydrogen Fuels,...

107

Regulated Emissions from Diesel and Compressed Natural Gas Transit...  

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

Emissions from Diesel and Compressed Natural Gas Transit Buses Regulated Emissions from Diesel and Compressed Natural Gas Transit Buses Poster presentaiton at the 2007 Diesel...

108

NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastruct...  

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

NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastructure NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastructure 2012 DOE Hydrogen and Fuel Cells...

109

Vehicle Technologies Office Merit Review 2014: High Compression...  

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

High Compression Ratio Turbo Gasoline Engine Operation Using Alcohol Enhancement Vehicle Technologies Office Merit Review 2014: High Compression Ratio Turbo Gasoline Engine...

110

Characterization of Dual-Fuel Reactivity Controlled Compression...  

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

Dual-Fuel Reactivity Controlled Compression Ignition (RCCI) Using Hydrated Ethanol and Diesel Fuel Characterization of Dual-Fuel Reactivity Controlled Compression Ignition (RCCI)...

111

Pdc - The Worldwide Leader in Hydrogen Refueling Station Compression...  

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

Pdc - The Worldwide Leader in Hydrogen Refueling Station Compression Pdc - The Worldwide Leader in Hydrogen Refueling Station Compression This presentation by Matther Weaver of Pdc...

112

Compressed Sensing accelerated radial acquisitions for dynamic Magnetic Resonance Imaging.  

E-Print Network [OSTI]

??We present a flexible method dubbed Accelerated Radial Compressed Sensing (ARCS) which uses Compressed Sensing to reconstruct 2D and 3D radial data. Our tests on… (more)

Zwaan, I.N.

2013-01-01T23:59:59.000Z

113

Two-Stage Variable Compression Ratio (VCR) System to Increase...  

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

Two-Stage Variable Compression Ratio (VCR) System to Increase Efficiency in Gasoline Powertrains Two-Stage Variable Compression Ratio (VCR) System to Increase Efficiency in...

114

High Fidelity Modeling of Premixed Charge Compression Ignition...  

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

High Fidelity Modeling of Premixed Charge Compression Ignition Engines High Fidelity Modeling of Premixed Charge Compression Ignition Engines Most accurate and detailed chemical...

115

High-Efficiency Clean Combustion Design for Compression Ignition...  

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

High-Efficiency Clean Combustion Design for Compression Ignition Engines High-Efficiency Clean Combustion Design for Compression Ignition Engines Presentation given at DEER 2006,...

116

New Methodologies for Analysis of Premixed Charge Compression...  

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

New Methodologies for Analysis of Premixed Charge Compression Ignition Engines New Methodologies for Analysis of Premixed Charge Compression Ignition Engines Presentation given at...

117

High-Efficiency Clean Combustion Engine Designs for Compression...  

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

High-Efficiency Clean Combustion Engine Designs for Compression Ignition Engines High-Efficiency Clean Combustion Engine Designs for Compression Ignition Engines Presentation from...

118

Shock compression profiles in ceramics  

SciTech Connect (OSTI)

An investigation of the shock compression properties of high-strength ceramics has been performed using controlled planar impact techniques. In a typical experimental configuration, a ceramic target disc is held stationary, and it is struck by plates of either a similar ceramic or by plates of a well-characterized metal. All tests were performed using either a single-stage propellant gun or a two-stage light-gas gun. Particle velocity histories were measured with laser velocity interferometry (VISAR) at the interface between the back of the target ceramic and a calibrated VISAR window material. Peak impact stresses achieved in these experiments range from about 3 to 70 GPa. Ceramics tested under shock impact loading include: Al{sub 2}O{sub 3}, AlN, B{sub 4}C, SiC, Si{sub 3}N{sub 4}, TiB{sub 2}, WC and ZrO{sub 2}. This report compiles the VISAR wave profiles and experimental impact parameters within a database-useful for response model development, computational model validation studies, and independent assessment of the physics of dynamic deformation on high-strength, brittle solids.

Grady, D.E.; Moody, R.L.

1996-03-01T23:59:59.000Z

119

PHELIX for flux compression studies  

SciTech Connect (OSTI)

PHELIX (Precision High Energy-density Liner Implosion eXperiment) is a concept for studying electromagnetic implosions using proton radiography. This approach requires a portable pulsed power and liner implosion apparatus that can be operated in conjunction with an 800 MeV proton beam at the Los Alamos Neutron Science Center. The high resolution (< 100 micron) provided by proton radiography combined with similar precision of liner implosions driven electromagnetically can permit close comparisons of multi-frame experimental data and numerical simulations within a single dynamic event. To achieve a portable implosion system for use at high energy-density in a proton laboratory area requires sub-megajoule energies applied to implosions only a few cms in radial and axial dimension. The associated inductance changes are therefore relatively modest, so a current step-up transformer arrangement is employed to avoid excessive loss to parasitic inductances that are relatively large for low-energy banks comprising only several capacitors and switches. We describe the design, construction and operation of the PHELIX system and discuss application to liner-driven, magnetic flux compression experiments. For the latter, the ability of strong magnetic fields to deflect the proton beam may offer a novel technique for measurement of field distributions near perturbed surfaces.

Turchi, Peter J [Los Alamos National Laboratory; Rousculp, Christopher L [Los Alamos National Laboratory; Reinovsky, Robert E [Los Alamos National Laboratory; Reass, William A [Los Alamos National Laboratory; Griego, Jeffrey R [Los Alamos National Laboratory; Oro, David M [Los Alamos National Laboratory; Merrill, Frank E [Los Alamos National Laboratory

2010-06-28T23:59:59.000Z

120

IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING 1 Compression, Clustering and Pattern Discovery in  

E-Print Network [OSTI]

some of the most significant challenges in data analysis. Sub-sampling and compression are two key design. Analysis of high dimensional data typically takes the form of extract- ing correlations between to large datasets. Analysis of continuous attribute data generally takes the form of eigenvalue

Ramakrishnan, Naren

Note: This page contains sample records for the topic "luc general compression" 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

A wave propagation method for compressible multiphase flow on mapped grids  

E-Print Network [OSTI]

A wave propagation method for compressible multiphase flow on mapped grids K.-M. Shyue Department with a stiffened gas equation of state on body-fitted mapped grids in general two- and three-dimensional geometries, Body-fitted mapped grids, Wave propagation method, Stiffened gas equation of state 2000 MSC: 65M06, 65M

Shyue, Keh-Ming

122

Seneca Compressed Air Energy Storage (CAES) Project  

SciTech Connect (OSTI)

This document provides specifications for the process air compressor for a compressed air storage project, requests a budgetary quote, and provides supporting information, including compressor data, site specific data, water analysis, and Seneca CAES value drivers.

None

2012-11-30T23:59:59.000Z

123

Compressing Propositional Refutations Using Subsumption Hasan Amjad  

E-Print Network [OSTI]

Compressing Propositional Refutations Using Subsumption Hasan Amjad University of Cambridge Computer Laboratory 15 J J Thomson Avenue, Cambridge CB3 0FD, UK Hasan.Amjad@cl.cam.ac.uk Abstract We

Miller, Alice

124

Compressive Sensing Based High Resolution Channel Estimation ...  

E-Print Network [OSTI]

carefully design its encoding and decoding steps. They cor- .... present this process by ...... [34] J. Paredes, G.Arce, and Z. Wang, “Ultra-wideband compressed sensing: ... actions on Information Theory, vol.51, no.12, p.p. 4203–

2011-09-17T23:59:59.000Z

125

Compression and Creep of Venice Lagoon Sands  

E-Print Network [OSTI]

A laboratory test program was conducted to evaluate the one-dimensional (1D) compression and creep properties of intact sand (and silty-sand) samples from a deep borehole at the Malamocco Inlet to the Venice Lagoon. The ...

Sanzeni, Alex

126

Compressed Air Load Reduction Approaches and Innovations  

E-Print Network [OSTI]

are assessed. It is a common practice in facilities to simply add compressor capacity when faced with supply pressure or volume deficiencies, increasing the energy consumption associated with compressed air systems in industry. Additionally, in recent years...

D'Antonio, M.; Epstein, G.; Moray, S.; Schmidt, C.

2005-01-01T23:59:59.000Z

127

Method for compression of binary data  

DOE Patents [OSTI]

The disclosed method for compression of a series of data bytes, based on LZSS-based compression methods, provides faster decompression of the stored data. The method involves the creation of a flag bit buffer in a random access memory device for temporary storage of flag bits generated during normal LZSS-based compression. The flag bit buffer stores the flag bits separately from their corresponding pointers and uncompressed data bytes until all input data has been read. Then, the flag bits are appended to the compressed output stream of data. Decompression can be performed much faster because bit manipulation is only required when reading the flag bits and not when reading uncompressed data bytes and pointers. Uncompressed data is read using byte length instructions and pointers are read using word instructions, thus reducing the time required for decompression. 5 figs.

Berlin, G.J.

1996-03-26T23:59:59.000Z

128

Understanding the Basics of Compressed Air Systems  

E-Print Network [OSTI]

, contaminated filters, conversion to electrically operated hoists, and the use of centrifugal fans or compressed air with pressure regulators to purge control cabinets. Finally, a review of compressor technologies with typical cfm, pressure ranges, and price...

Herron, D. J.

129

Lossy compression of weak lensing data  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Future orbiting observatories will survey large areas of sky in order to constrain the physics of dark matter and dark energy using weak gravitational lensing and other methods. Lossy compression of the resultant data will improve the cost and feasibility of transmitting the images through the space communication network. We evaluate the consequences of the lossy compression algorithm of Bernstein et al. (2010) for the high-precision measurement of weak-lensing galaxy ellipticities. This square-root algorithm compresses each pixel independently, and the information discarded is by construction less than the Poisson error from photon shot noise. For simulated space-based images (without cosmic rays) digitized to the typical 16 bits per pixel, application of the lossy compression followed by image-wise lossless compression yields images with only 2.4 bits per pixel, a factor of 6.7 compression. We demonstrate that this compression introduces no bias in the sky background. The compression introduces a small amount of additional digitization noise to the images, and we demonstrate a corresponding small increase in ellipticity measurement noise. The ellipticity measurement method is biased by the addition of noise, so the additional digitization noise is expected to induce a multiplicative bias on the galaxies measured ellipticities. After correcting for this known noise-induced bias, we find a residual multiplicative ellipticity bias of m {approx} -4 x 10{sup -4}. This bias is small when compared to the many other issues that precision weak lensing surveys must confront, and furthermore we expect it to be reduced further with better calibration of ellipticity measurement methods.

Vanderveld, R Ali [Chicago U., EFI; Caltech /Caltech, JPL; Bernstein, Gary M [Pennsylvania U.; Stoughton, Chris [Fermilab; Rhodes, Jason [Caltech; Caltech, JPL; Massey, Richard [Royal Observ., Edinburgh; Dobke, Benjamin M [Caltech; Caltech, JPL

2011-06-01T23:59:59.000Z

130

Compressed Air Systems Audits - Why? And How?  

E-Print Network [OSTI]

% of the compressed air costs, most with little or no capital investment. Almost always, in the event of a capital outlay, energy savings alone afford less than one-year payback. Many energy utility companies energetically support these efforts, and some.... Secondly, join us in the definition of compressed air as a system, the totality of which is comprised of the Supply Side and the Demand Side. The Supply Side is the compressors and their controls, receivers (primary storage tanks), aftercoolers, filters...

Kemp, H. L.

2004-01-01T23:59:59.000Z

131

INTEGRATION OF WIND TURBINES WITH COMPRESSED AIR ENERGY STORAGE  

E-Print Network [OSTI]

and an unpredictable nature, can be overcome. After an overview on storage systems, the Compressed Air

I. Arsie; V. Marano; G. Rizzo; M. Moran

132

Technology demonstration of dedicated compressed natural gas (CNG) original equipment manufacturer (OEM) vehicles at St. Bliss, Texas. Interim report, October 1992--May 1994  

SciTech Connect (OSTI)

Results are presented from a demonstration program conducted on the comparative evaluations of the combustion of compressed natural gas as an alternative fuel for gasoline. General Motors pick-up trucks were utilized in the study.

Alvarez, R.A.; Yost, D.M.

1995-11-01T23:59:59.000Z

133

Compression-induced failure of electro-active polymeric thin films  

E-Print Network [OSTI]

The insurgence of compression induces wrinkling in actuation devices based on EAPs thin films leading to a sudden decrease of performances up to failure. Based on the classical tension field theory for thin elastic membranes, we provide a general framework for the analysis of the insurgence of in-plane compression in membranes of electroactive polymers (EAPs). Our main result is the deduction of a (voltage-dependent) domain in the stretch space which represents tensile configurations. Under the assumption of Mooney-Rivlin materials, we obtain that for growing values of the applied voltage the domain contracts, vanishing at a critical voltage above which the polymer is wrinkled for any stretch configuration. Our approach can be easily implemented in numerical simulations for more complex material behaviors and provides a tool for the analysis of compression instability as a function of the elastic moduli.

Domenico De Tommasi; Giuseppe Puglisi; Giuseppe Zurlo

2010-12-07T23:59:59.000Z

134

General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshort version) ThelongEmailStatusGeneralGeneral

135

Seneca Compressed Air Energy Storage (CAES) Project  

SciTech Connect (OSTI)

Compressed Air Energy Storage (CAES) is a hybrid energy storage and generation concept that has many potential benefits especially in a location with increasing percentages of intermittent wind energy generation. The objectives of the NYSEG Seneca CAES Project included: for Phase 1, development of a Front End Engineering Design for a 130MW to 210 MW utility-owned facility including capital costs; project financials based on the engineering design and forecasts of energy market revenues; design of the salt cavern to be used for air storage; draft environmental permit filings; and draft NYISO interconnection filing; for Phase 2, objectives included plant construction with a target in-service date of mid-2016; and for Phase 3, objectives included commercial demonstration, testing, and two-years of performance reporting. This Final Report is presented now at the end of Phase 1 because NYSEG has concluded that the economics of the project are not favorable for development in the current economic environment in New York State. The proposed site is located in NYSEG’s service territory in the Town of Reading, New York, at the southern end of Seneca Lake, in New York State’s Finger Lakes region. The landowner of the proposed site is Inergy, a company that owns the salt solution mining facility at this property. Inergy would have developed a new air storage cavern facility to be designed for NYSEG specifically for the Seneca CAES project. A large volume, natural gas storage facility owned and operated by Inergy is also located near this site and would have provided a source of high pressure pipeline quality natural gas for use in the CAES plant. The site has an electrical take-away capability of 210 MW via two NYSEG 115 kV circuits located approximately one half mile from the plant site. Cooling tower make-up water would have been supplied from Seneca Lake. NYSEG’s engineering consultant WorleyParsons Group thoroughly evaluated three CAES designs and concluded that any of the designs would perform acceptably. Their general scope of work included development of detailed project construction schedules, capital cost and cash flow estimates for both CAES cycles, and development of detailed operational data, including fuel and compression energy requirements, to support dispatch modeling for the CAES cycles. The Dispatch Modeling Consultant selected for this project was Customized Energy Solutions (CES). Their general scope of work included development of wholesale electric and gas market price forecasts and development of a dispatch model specific to CAES technologies. Parsons Brinkerhoff Energy Storage Services (PBESS) was retained to develop an air storage cavern and well system design for the CAES project. Their general scope of work included development of a cavern design, solution mining plan, and air production well design, cost, and schedule estimates for the project. Detailed Front End Engineering Design (FEED) during Phase 1 of the project determined that CAES plant capital equipment costs were much greater than the $125.6- million originally estimated by EPRI for the project. The initial air storage cavern Design Basis was increased from a single five million cubic foot capacity cavern to three, five million cubic foot caverns with associated air production wells and piping. The result of this change in storage cavern Design Basis increased project capital costs significantly. In addition, the development time required to complete the three cavern system was estimated at approximately six years. This meant that the CAES plant would initially go into service with only one third of the required storage capacity and would not achieve full capability until after approximately five years of commercial operation. The market price forecasting and dispatch modeling completed by CES indicated that the CAES technologies would operate at only 10 to 20% capacity factors and the resulting overall project economics were not favorable for further development. As a result of all of these factors, the Phase 1 FEED developed an installe

None

2012-11-30T23:59:59.000Z

136

Fast electron microscopy via compressive sensing  

DOE Patents [OSTI]

Various technologies described herein pertain to compressive sensing electron microscopy. A compressive sensing electron microscope includes a multi-beam generator and a detector. The multi-beam generator emits a sequence of electron patterns over time. Each of the electron patterns can include a plurality of electron beams, where the plurality of electron beams is configured to impart a spatially varying electron density on a sample. Further, the spatially varying electron density varies between each of the electron patterns in the sequence. Moreover, the detector collects signals respectively corresponding to interactions between the sample and each of the electron patterns in the sequence.

Larson, Kurt W; Anderson, Hyrum S; Wheeler, Jason W

2014-12-09T23:59:59.000Z

137

Techniques for optically compressing light intensity ranges  

DOE Patents [OSTI]

A pin hole camera assembly for use in viewing an object having a relatively large light intensity range, for example a crucible containing molten uranium in an atomic vapor laser isotope separator (AVLIS) system is disclosed herein. The assembly includes means for optically compressing the light intensity range appearing at its input sufficient to make it receivable and decipherable by a standard video camera. A number of different means for compressing the intensity range are disclosed. These include the use of photogray glass, the use of a pair of interference filters, and the utilization of a new liquid crystal notch filter in combination with an interference filter. 18 figs.

Rushford, M.C.

1989-03-28T23:59:59.000Z

138

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

50 compressed air system energy audits completed by Shanghai50 compressed air system energy audits completed by Shanghaiof compressed air energy audits conducted by the Shanghai

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

139

E-Print Network 3.0 - adiabatic compression heating Sample Search...  

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

Compression H2... Hydrogen Delivery Liquefaction & Compression Raymond Drnevich Praxair - Tonawanda, NY Strategic... Liquefaction Hydrogen Compression 12;3 Praxair at a...

140

E-Print Network 3.0 - adiabatic compressed air Sample Search...  

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

& Compression Summary: Hydrogen Delivery Liquefaction & Compression Raymond Drnevich Praxair - Tonawanda, NY Strategic... Liquefaction Hydrogen Compression 12;3 Praxair at a...

Note: This page contains sample records for the topic "luc general compression" 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

Alternative Fuel Vehicles: The Case of Compressed Natural Gas (CNG) Vehicles in California Households  

E-Print Network [OSTI]

VEHICLES: THE CASE OF COMPRESSED NATURAL GAS (CNG) VEHICLESyou first learn about compressed natural gas (CNG) vehicles?VEHICLES: THE CASE OF COMPRESSED NATURAL GAS (CNG) VEHICLES

Abbanat, Brian A.

2001-01-01T23:59:59.000Z

142

Desalination Using Vapor-Compression Distillation  

E-Print Network [OSTI]

and MSF, this research investigates a high-efficiency mechanical vapor-compression distillation system that employs an improved water flow arrangement. The incoming salt concentration was 0.15% salt for brackish water and 3.5% salt for seawater, whereas...

Lubis, Mirna R.

2010-07-14T23:59:59.000Z

143

Faster Compressed Dictionary Matching (extended abstract)  

E-Print Network [OSTI]

The past few years have witnessed several exciting results on compressed represen- tation of a string T that supports e±cient pattern matching, and the space complexity has been reduced to jTjHk(T)+o(jTj log Ÿ) bits [8, ...

Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Tam, Siu-Lung; Vitter, Jeffrey Scott

2010-01-01T23:59:59.000Z

144

Compressed Index for Dictionary Matching (extended abstract)  

E-Print Network [OSTI]

The past few years have witnessed several exciting results on compressed represen- tation of a string T that supports e±cient pattern matching, and the space complexity has been reduced to jTjHk(T)+o(jTj log Ÿ) bits [8, ...

Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Tam, Siu-Lung; Vitter, Jeffrey Scott

2008-01-01T23:59:59.000Z

145

Energy Efficiency in Compressed Air Systems  

E-Print Network [OSTI]

Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a...

Hingorani, A.; Pavlov, A.

2010-01-01T23:59:59.000Z

146

Advanced Controls for Industrial Compressed Air Systems  

E-Print Network [OSTI]

at a Goulds Pumps manufacturing plant in Seneca Falls, New York, and is currently undergoing field testing. The compressed air system will optimize the energy efficiency of the 7 compressor system (1,850hp) at Goulds, while reducing system pressure...

Vold, P.; Gabel, S.; Carmichael, L.; Curtner, K.; Cirillo, N. C. Jr.

147

Compressive Computation in Analog VLSI Motion Sensors  

E-Print Network [OSTI]

Compressive Computation in Analog VLSI Motion Sensors Rainer A. Deutschmann1 and Oliver G. Wenisch2 analog VLSI mo- tion sensors developed in the past. We show how their pixel-parallel architecture can is best suited to perform the algorithm even at high noise levels. 1 Analog VLSI Motion Sensors Inthe past

Deutschmann, Rainer

148

Regression Cubes with Lossless Compression and Aggregation  

E-Print Network [OSTI]

, in addition to the traditional simple measures such as count and average. Such new measures will allow users space. In this paper, we propose a fundamentally new class of measures, compressible measures, in order. With years of research and development of data warehouse and OLAP technology [15], [7], [1], [34], a large

Pei, Jian

149

From sideward flow to nuclear compressibility  

SciTech Connect (OSTI)

We show that the differences between the Plastic Ball and DIOGENE experiments on sideward flow make it possible to asses independently, within the transport description of collisions, the effect of density dependence and momentum dependence of the nucleon optical potential. We estimate that the nuclear compressibility [ital K] lies between 180 and 235 MeV.

Pan, Q.; Danielewicz, P. (National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States))

1993-04-05T23:59:59.000Z

150

From sideward flow to nuclear compressibility  

SciTech Connect (OSTI)

The authors use the transport model (BUU) with different optical potentials, combining density and momentum dependence with strong or weak nuclear compressibility, to simulate heavy-ion collisions. Experiment by DIOGENE allows them to show that experimental sideward flow is close to their calculations using optical potential of soft momentum- and density-dependence (Potential I), as well as calculations using optical potential of stiff pure density-dependence (Potential II). On the other hand, the Plastic Ball experiment on sideward flow, mainly due to the instrumental rejection of low transverse momentum particles, allows the authors to tell the differences between Potential I and II, with calculations using Potential I being close to the experimental data. Combining the results above, they see that only potential I with soft nuclear compressibility can describe the experimental data. The uncertainty of NN cross section in the medium leads to the uncertainty in nuclear compressibility, they estimate that the nuclear compressibility K lies between 180 and 235 MeV.

Pan, Q.; Danielewicz, P.

1993-04-01T23:59:59.000Z

151

Thickness and drainage of perfluoropolyethers under compression  

SciTech Connect (OSTI)

The Surface Forces Apparatus was used to study the compression and drainage of perfluoropolyethers (PFPE) between two flat parallel mica surfaces. In the case of Zdols and Demnum-SA, the PFPE can be squeezed out during slow compression to a final residual film one gyration diameter in thickness. This thickness remained constant up to the highest applied pressure of (is similar to)10 MPa. The residual thickness for Demnum-SA, with one active end group, was found to be approximately 40% larger than that for Zdol of the same molecular weight, with two active end groups. In contrast, Z03, with no active end groups, could be displaced completely from the contact. The dynamics of expulsion were studied by monitoring the variation of the gap width as a function of time after fast (a few milliseconds) step increase in the compressive load. It was found that Zdol behaves as the bulk liquid down to gap widths of 4 equivalent gyration diameters. A viscosity increase of more than 10 times was observed when the gap width was between 4 and 2 gyration diameters. Finally, slow compression to the maximum achievable pressure (approximately 10 MPa) led to a residual layer one gyration diameter in thickness trapped between the mica surfaces.

Xu, Lei; Ogletree, D Frank; Salmeron, Miquel; Tang, Huan; Gui, Jing

2001-01-01T23:59:59.000Z

152

Wave motions in unbounded poroelastic solids infused with compressible fluids  

E-Print Network [OSTI]

Wave motions in unbounded poroelastic solids infused with compressible fluids S. Quiligotti, G at proposing a two-scale constitutive theory of a poroelastic solid infused with an inviscid compressible fluid

153

automated chest compression: Topics by E-print Network  

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

or compressibility when acquiring signals in a compressible signal into a small amount of data.Interestingly,this may be changing the way engineers think Wang, Hsin-Min 350...

154

CO? compression for capture-enabled power systems  

E-Print Network [OSTI]

The objective of this thesis is to evaluate a new carbon dioxide compression technology - shock compression - applied specifically to capture-enabled power plants. Global warming has increased public interest in carbon ...

Suri, Rajat

2009-01-01T23:59:59.000Z

155

2014 - LNG Export, Compressed Natural Gas (CNG), Re-Exports ...  

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

4 - LNG Export, Compressed Natural Gas (CNG), Re-Exports & Long Term Natural Gas Applications 2014 - LNG Export, Compressed Natural Gas (CNG), Re-Exports & Long Term Natural Gas...

156

COLLOQUIUM: Compressed Air Energy Storage: The Bridge to Our...  

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

April 30, 2014, 4:00pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: Compressed Air Energy Storage: The Bridge to Our Renewable Energy Future Mr. Al Cavallo Consultant Compressed...

157

2015 - LNG Export, Compressed Natural Gas (CNG), Re-Exports ...  

Energy Savers [EERE]

2015 - LNG Export, Compressed Natural Gas (CNG), Re-Exports & Long Term Natural Gas Applications 2015 - LNG Export, Compressed Natural Gas (CNG), Re-Exports & Long Term Natural Gas...

158

Centralized Collaborative Compressed Sensing of Wideband Spectrum for Cognitive Radios  

E-Print Network [OSTI]

1 Centralized Collaborative Compressed Sensing of Wideband Spectrum for Cognitive Radios Hessam, spectrum sensing, cognitive radio, distri- bution discontinuities, algebraic detection, wideband. I technique for cognitive radio systems which combines algebraic tools and compressive sampling techniques

Paris-Sud XI, Université de

159

Low-dimensional Models for Compression, Compressed Sensing, and Prediction of Large-Scale  

E-Print Network [OSTI]

Technological University, Singapore, 639798; nikola001@e.ntu.edu.sg, muhammad89@e.ntu.edu.sg, jdauwels@ntu) is commonly deployed to compress large traffic data sets [2], [4]­[6]. PCA provides an effective low

Jaillet, Patrick

160

Summary of Compression Testing of U-10Mo  

SciTech Connect (OSTI)

The mechanical properties of depleted uranium plus 10 weight percent molybdenum alloy have been evaluated by high temperature compression testing.

Nyberg, Eric A.; Joshi, Vineet V.; Lavender, Curt A.; Burkes, Douglas

2012-10-31T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

General Information  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Big Sky Learning Fun withGenepool QuarterlyGeneraland Ernest O.General

162

General Publications  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest Region service area. TheEPSCIResearch to sponsorGeneral Atomics

163

General Publications  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshort version) ThelongEmailStatusGeneral Publications

164

Novel Spark Plugs Improve Energy Efficiency of Compressed Natural  

E-Print Network [OSTI]

Novel Spark Plugs Improve Energy Efficiency of Compressed Natural Gas Engines Energy Innovations use affects climate change. Vehicles operating on compressed natural gas reduce petroleum fuel use, the vast majority of compressed natural gas (CNG) engines are used in transit buses serving the public

165

Prediction-Based Compression Ratio Boundaries for Medical Images  

E-Print Network [OSTI]

Prediction-Based Compression Ratio Boundaries for Medical Images Xiaojun Qi Computer Science present prediction-based image compression techniques take advantage of either intra- or inter function. The prediction-based compression technique has been applied on some magnetic resonance (MR) brain

Qi, Xiaojun

166

Mesh Geometry Compression for Mobile Graphics Jongseok Lee  

E-Print Network [OSTI]

technology has not caught up with the energy requirement of 3D graphics processing. Data compression canMesh Geometry Compression for Mobile Graphics Jongseok Lee POSTECH thirdeye@postech.ac.kr Sungyul--This paper presents a compression scheme for mesh geometry, which is suitable for mobile graphics. The main

Lee, Seungyong

167

Modern Compressed Air Piping Selection and Design Can Have a Great Impact on Your Compressed Air Energy Dollars  

E-Print Network [OSTI]

This paper introduces new concepts in compressed air piping, sizing, and system design beyond the conventional pipe sizing charts and standard system layout guide lines. The author shows how compressed air velocity has a very significant impact...

Van Ormer, H.

2005-01-01T23:59:59.000Z

168

Compressed Air Energy Savings: SAV-AIR Monitor and Control System and the PNW Compressed Air Challenge  

E-Print Network [OSTI]

Portland, OR Portland, OR ABSTRACT This paper presents the results from two compressed air programs supported by the Northwest Energy Efficiency Alliance (Alliance) over the last five years. In 1997 the Alliance funded the Northwest regional version...Resource Group Portland, OR COMPRESSED A[R CHALLENGE The Compressed Air Challenge (CAC) is a national collaborative that develops and provides resources to educate industrial plant operating staff on ways to increase net profits through compressed air...

Anderson, K. J.; Annen, B.; Scott, S.

169

Saving Energy in Industrial Compressed Air Systems: Issues and Obstacles in DSM Program Design  

E-Print Network [OSTI]

in capturing this potential through utility-sponsored DSM programs. Baltimore Gas & Electric Company (BG&E) has been investigating compressed air program design since 1991, and has offered rebate programs since January 1992. This paper will review BG... of performance, and incentive mechanisms. BACKGROUND Utility DSM for industrial customers has generally been developed as an offshoot of commercial programs targeting a few common end uses - lighting, HVAC, and motors. As DSM matures, however, utilities...

Trojanowski, D.; Parfomak, P.

170

E-Print Network 3.0 - advanced reciprocating compression Sample...  

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

Machines... Hydrogen Delivery Liquefaction & Compression Raymond Drnevich Praxair - Tonawanda, NY Strategic... Liquefaction Hydrogen Compression 12;3 Praxair at a...

171

Compression of ground-motion data  

SciTech Connect (OSTI)

Ground motion data has been recorded for many years at Nevada Test Site and is now stored on thousands of digital tapes. The recording format is very inefficient in terms of space on tape. This report outlines a method to compress the data onto a few hundred tapes while maintaining the accuracy of the recording and allowing restoration of any file to the original format for future use. For future digitizing a more efficient format is described and suggested.

Long, J.W.

1981-04-01T23:59:59.000Z

172

Compression of cooked freeze-dried carrots  

E-Print Network [OSTI]

. Reduction in volume of up to 18-fold can be obtained by com- pressing dehydrated vegetables (Rabman, 1969). During World War II, the United Kingdom produced dehydrated cabbage and carrots in compressed blocks (Gooding and Rolfe, 1967). Fairbrother (1968...-propanol at low concentration by freeze-drying carbohydrate solutions. J. of Food Sci. 37:617. Flosdorf, E. W. 1949. "Freeze-drying, " Reinhold Publishing Co. , New York. Gooding, E. B. B. and Rolfe, E. J. 1957. Some Recent Work on Dehy- dration...

Macphearson, Bruce Alan

2012-06-07T23:59:59.000Z

173

Compression mode resonances in Zr-90  

E-Print Network [OSTI]

Compression mode resonances in 90Zr D. H. Youngblood, Y.-W. Lui, B. John,* Y. Tokimoto, H. L. Clark, and X. Chen Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA (Received 18 February 2004; published 20 May 2004..., JOHN, TOKIMOTO, CLARK, AND CHEN PHYSICAL REVIEW C 69, 054312 (2004) 054312-2 Fig. 2. The continuum distributions are similar over the en- tire energy range, whereas the angular distributions of the cross sections for the peak change...

Youngblood, David H.; Lui, YW; John, B.; Tokimoto, Y.; Clark, HL; Chen, X.

2004-01-01T23:59:59.000Z

174

Efficient Joins with Compressed Bitmap Indexes  

SciTech Connect (OSTI)

We present a new class of adaptive algorithms that use compressed bitmap indexes to speed up evaluation of the range join query in relational databases. We determine the best strategy to process a join query based on a fast sub-linear time computation of the join selectivity (the ratio of the number of tuples in the result to the total number of possible tuples). In addition, we use compressed bitmaps to represent the join output compactly: the space requirement for storing the tuples representing the join of two relations is asymptotically bounded by min(h; n . cb), where h is the number of tuple pairs in the result relation, n is the number of tuples in the smaller of the two relations, and cb is the cardinality of the larger column being joined. We present a theoretical analysis of our algorithms, as well as experimental results on large-scale synthetic and real data sets. Our implementations are efficient, and consistently outperform well-known approaches for a range of join selectivity factors. For instance, our count-only algorithm is up to three orders of magnitude faster than the sort-merge approach, and our best bitmap index-based algorithm is 1.2x-80x faster than the sort-merge algorithm, for various query instances. We achieve these speedups by exploiting several inherent performance advantages of compressed bitmap indexes for join processing: an implicit partitioning of the attributes, space-efficiency, and tolerance of high-cardinality relations.

Computational Research Division; Madduri, Kamesh; Wu, Kesheng

2009-08-19T23:59:59.000Z

175

Combined rankine and vapor compression cycles  

DOE Patents [OSTI]

An organic rankine cycle system is combined with a vapor compression cycle system with the turbine generator of the organic rankine cycle generating the power necessary to operate the motor of the refrigerant compressor. The vapor compression cycle is applied with its evaporator cooling the inlet air into a gas turbine, and the organic rankine cycle is applied to receive heat from a gas turbine exhaust to heat its boiler within one embodiment, a common condenser is used for the organic rankine cycle and the vapor compression cycle, with a common refrigerant, R-245a being circulated within both systems. In another embodiment, the turbine driven generator has a common shaft connected to the compressor to thereby eliminate the need for a separate motor to drive the compressor. In another embodiment, an organic rankine cycle system is applied to an internal combustion engine to cool the fluids thereof, and the turbo charged air is cooled first by the organic rankine cycle system and then by an air conditioner prior to passing into the intake of the engine.

Radcliff, Thomas D.; Biederman, Bruce P.; Brasz, Joost J.

2005-04-19T23:59:59.000Z

176

Radiative Decay of Bubble Oscillations in a Compressible Fluid  

E-Print Network [OSTI]

Consider the dynamics of a gas bubble in an inviscid, compressible liquid with surface tension. Kinematic and dynamic boundary conditions couple the bubble surface deformation dynamics with the dynamics of waves in the fluid. This system has a spherical equilibrium state, resulting from the balance of the pressure at infinity and the gas pressure within the bubble. We study the linearized dynamics about this equilibrium state in a center of mass frame: 1) We prove that the velocity potential and bubble surface perturbation satisfy point-wise in space exponential time-decay estimates. 2) The time-decay rate is governed by scattering resonances, eigenvalues of a non-selfadjoint spectral problem. These are pole singularities in the lower half plane of the analytic continuation of a resolvent operator from the upper half plane, across the real axis into the lower half plane. 3) The time-decay estimates are a consequence of resonance mode expansions for the velocity potential and bubble surface perturbations. 4) For small compressibility (Mach number, a ratio of bubble wall velocity to sound speed, \\epsilon), this is a singular perturbation of the incompressible limit. The scattering resonances which govern the anomalously slow time-decay, are {\\it Rayleigh resonances}. Asymptotics, supported by high-precision numerical studies, indicate that the Rayleigh resonances which are closest to the real axis satisfy | \\frac{\\Im \\lambda_\\star(\\epsilon)}{\\Re \\lambda_\\star(\\epsilon)} | = {\\cal O} (\\exp(-\\kappa\\ \\We\\ \\epsilon^{-2})), \\kappa>0. Here, \\We denotes the Weber number, a dimensionless ratio comparing inertia and surface tension. 5) To obtain the above results we prove a general result, of independent interest, estimating the Neumann to Dirichlet map for the wave equation, exterior to a sphere.

A. M. Shapiro; M. I. Weinstein

2011-01-01T23:59:59.000Z

177

EA-1976: Emera CNG, LLC Compressed Natural Gas Project, Florida  

Broader source: Energy.gov [DOE]

This EA will evaluate the potential environmental impacts associated with a proposal by Emera CNG, LLC that would include Emera's CNG plant Emera’s CNG plant would include facilities to receive, dehydrate, and compress gas to fill pressure vessels with an open International Organization for Standardization (ISO) container frame mounted on trailers. Emera plans to truck the trailers a distance of a quarter mile from its proposed CNG facility to a berth at the Port of Palm Beach, where the trailers will be loaded onto a roll-on/roll-off ocean going carrier. Emera plans to receive natural gas at its planned compression facility from the Riviera Lateral, a pipeline owned and operated by Peninsula Pipeline Company. Although this would be the principal source of natural gas to Emera’s CNG facility for export, during periods of maintenance at Emera’s facility, or at the Port of Palm Beach, Emera may obtain CNG from other sources and/or export CNG from other general-use Florida port facilities. The proposed Emera facility will initially be capable of loading 8 million cubic feet per day (MMcf/day) of CNG into ISO containers and, after full build-out, would be capable to load up to 25 MMcf/day. For the initial phase of the project, Emera intends to send these CNG ISO containers from Florida to Freeport, Grand Bahama Island, where the trailers will be unloaded, the CNG decompressed, and injected into a pipeline for transport to electric generation plants owned and operated by Grand Bahama Power Company (GBPC). DOE authorizing the exportation of CNG and is not providing funding or financial assistance for the Emera Project.

178

Fusion Power Associates, 2011 Annual Meeting 1 General Fusion  

E-Print Network [OSTI]

7 Plasma Injector 10 people $3M 1 year #12;Fusion Power Associates, 2011 Annual Meeting 8 Density people $3.5M 14 months #12;Fusion Power Associates, 2011 Annual Meeting 11 Plasma Compression ExperimentsFusion Power Associates, 2011 Annual Meeting 1 General Fusion #12;Fusion Power Associates, 2011

179

International magnetic pulse compression workshop: (Proceedings)  

SciTech Connect (OSTI)

A few individuals have tried to broaden the understanding of specific and salient pulsed-power topics. One such attempt is this documentation of a workshop on magnetic switching as it applies primarily to pulse compression (power transformation), affording a truly international perspective by its participants under the initiative and leadership of Hugh Kirbie and Mark Newton of the Lawrence Livermore National Laboratory (LLNL) and supported by other interested organizations. During the course of the Workshop at Granlibakken, a great deal of information was amassed and a keen insight into both the problems and opportunities as to the use of this switching approach was developed. The segmented workshop format proved ideal for identifying key aspects affecting optimum performance in a variety of applications. Individual groups of experts addressed network and system modeling, magnetic materials, power conditioning, core cooling and dielectrics, and finally circuits and application. At the end, they came together to consolidate their input and formulate the workshop's conclusions, identifying roadblocks or suggesting research projects, particularly as they apply to magnetic switching's trump card--its high-average-power-handling capability (at least on a burst-mode basis). The workshop was especially productive both in the quality and quantity of information transfer in an environment conducive to a free and open exchange of ideas. We will not delve into the organization proper of this meeting, rather we wish to commend to the interested reader this volume, which provides the definitive and most up-to-date compilation on the subject of magnetic pulse compression from underlying principles to current state of the art as well as the prognosis for the future of magnetic pulse compression as a consensus of the workshop's organizers and participants.

Kirbie, H.C.; Newton, M.A.; Siemens, P.D.

1991-04-01T23:59:59.000Z

180

Low emissions compression ignited engine technology  

DOE Patents [OSTI]

A method and apparatus for operating a compression ignition engine having a cylinder wall, a piston, and a head defining a combustion chamber. The method and apparatus includes delivering fuel substantially uniformly into the combustion chamber, the fuel being dispersed throughout the combustion chamber and spaced from the cylinder wall, delivering an oxidant into the combustion chamber sufficient to support combustion at a first predetermined combustion duration, and delivering a diluent into the combustion chamber sufficient to change the first predetermined combustion duration to a second predetermined combustion duration different from the first predetermined combustion duration.

Coleman, Gerald N. (Dunlap, IL); Kilkenny, Jonathan P. (Peoria, IL); Fluga, Eric C. (Dunlap, IL); Duffy, Kevin P. (East Peoria, IL)

2007-04-03T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Coke cake behavior under compressive forces  

SciTech Connect (OSTI)

The deformation of the coke cake and load on the side wall during pushing were studied using an electric furnace equipped with a movable wall. Coke cake was found to deform in three stages under compressive forces. The coke cake was shortened in the pushing direction in the cake deformation stage, and load was generated on the side walls in the high wall load stage. Secondary cracks in the coke cake were found to prevent load transmission on the wall. The maximum load transmission rate was controlled by adjusting the maximum fluidity and mean reflectance of the blended coal.

Watakabe, S.; Takeda, T.; Itaya, H.; Suginobe, H.

1997-12-31T23:59:59.000Z

182

Minimize Compressed Air Leaks | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergy HealthComments MEMA:May1.docEx5.docof Energy Adverse MotorCompressed Air

183

Variable Compression Ratio Engine | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage »of EnergyTheTwoVulnerabilities | Department of|VTA,anCompression Ratio

184

High load operation in a homogeneous charge compression ignition engine  

DOE Patents [OSTI]

A homogeneous charge compression ignition engine is set up by first identifying combinations of compression ratio and exhaust gas percentages for each speed and load across the engines operating range. These identified ratios and exhaust gas percentages can then be converted into geometric compression ratio controller settings and exhaust gas recirculation rate controller settings that are mapped against speed and load, and made available to the electronic

Duffy, Kevin P. (Metamora, IL); Kieser, Andrew J. (Morton, IL); Liechty, Michael P. (Chillicothe, IL); Hardy, William L. (Peoria, IL); Rodman, Anthony (Chillicothe, IL); Hergart, Carl-Anders (Peoria, IL)

2008-12-23T23:59:59.000Z

185

A New Compressive Imaging Camera Architecture using Optical-Domain Compression  

E-Print Network [OSTI]

for processing, to a "computa- tional signal processing" (CSP) paradigm, where analog signals are converted nonlinear techniques. 1.1. Compressive sensing CSP builds upon a core tenet of signal processing a decorrelating transform to compact a correlated signal's energy into just a few essential coefficients.1

186

Advancement in Fuel Spray and Combustion Modeling for Compression...  

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

Applications Advancement in Fuel Spray and Combustion Modeling for Compression Ignition Engine Applications 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies...

187

NJ Compressed Natural Gas Refuse Trucks, Shuttle Buses and Infrastruct...  

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

Vehicle Technologies Program Review Presentation NJ COMPRESSED NATURAL GAS REFUSE TRUCKS, SHUTTLE BUSES AND INFRASTRUCTURE Chuck Feinberg, Principal Investigator New Jersey Clean...

188

Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels...  

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

Workshop Notes from ""Compressed Natural Gas and Hydrogen Fuels: Lessons Learned for the Safe Deployment of Vehicles"" Workshop, December 10-11, 2009 Workshop Notes from...

189

H2A Delivery: Forecourt Compression & Storage Optimization (Part...  

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

Land Areas Forecourt Storage and Compression Options Forecourt and Gas Infrastructure Optimization Home About the Fuel Cell Technologies Office Hydrogen Production Hydrogen...

190

artificial compressibility method: Topics by E-print Network  

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

solutions of the Incompressible Navier Stokes system on exterior domains via the artificial compressibility method Mathematical Physics (arXiv) Summary: In this paper we study...

191

Advanced CFD Models for High Efficiency Compression Ignition...  

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

for high efficiency compression-ignition engines can be used to show how turbulence-chemistry interactions influence autoignition and combustion. p-19raja.pdf More Documents &...

192

VIDEO PRESENTATION AND COMPRESSION Borko Furht and Raymond Westwater  

E-Print Network [OSTI]

9 VIDEO PRESENTATION AND COMPRESSION Borko Furht and Raymond Westwater Florida Atlantic University........................................................................................................................ 172 1.1 VIDEO REPRESENTATION AND FORMATS.................................................................................. 172 1.2 VIDEO INFORMATION UNITS

Furht, Borko

193

Two-Stage Variable Compression Ratio (VCR) System to Increase...  

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

th , 2012 Two-Stage Variable Compression Ratio (VCR) System to Increase Efficiency in Gasoline Powertrains DEER Conference 2012 D. Tomazic, H. Kleeberg, S. Bowyer, FEV Inc. J....

194

New Methodologies for Analysis of Premixed Charge Compression...  

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

New Methodologies for Analysis of Premixed Charge Compression Ignition Engines Salvador M. Aceves, Daniel L. Flowers, J. Ray Smith, Lee Davisson, Francisco Espinosa-Loza, Tim Ross,...

195

Workshop Agenda: Compressed Natural Gas and Hydrogen Fuels, Lesssons...  

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

to ensure safe use of onboard and bulk storage hydrogen and compressed natural gas tanks * Enhance domestic and international harmonization between natural gas and hydrogen...

196

Saturable inductor and transformer structures for magnetic pulse compression  

DOE Patents [OSTI]

Saturable inductor and transformer for magnetic compression of an electronic pulse, using a continuous electrical conductor looped several times around a tightly packed core of saturable inductor material.

Birx, Daniel L. (Londonderry, NH); Reginato, Louis L. (Orinda, CA)

1990-01-01T23:59:59.000Z

197

Technical Assessment: Cryo-Compressed Hydrogen Storage for Vehicular...  

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

with input from Salvador Aceves (Lawrence Livermore National Lab) and Tobias Brunner (BMW). Technical Assessment: Cryo-Compressed Hydrogen Storage for Vehicular Applications...

198

Technical Assessment of Cryo-Compressed Hydrogen Storage Tank...  

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

with input from Gene Berry (Lawrence Livermore National Laboratory), Tobias Brunner (BMW) and Bill Clinkscales (SCI). Technical Assessment of Cryo-Compressed Hydrogen Storage...

199

Multilayer compressive seal for sealing in high temperature devices  

DOE Patents [OSTI]

A mica based compressive seal has been developed exhibiting superior thermal cycle stability when compared to other compressive seals known in the art. The seal is composed of compliant glass or metal interlayers and a sealing (gasket) member layer composed of mica that is infiltrated with a glass forming material, which effectively reduces leaks within the seal. The compressive seal shows approximately a 100-fold reduction in leak rates compared with previously developed hybrid seals after from 10 to about 40 thermal cycles under a compressive stress of from 50 psi to 100 psi at temperatures in the range from 600.degree. C. to about 850.degree. C.

Chou, Yeong-Shyung (Richland, WA); Stevenson, Jeffry W. (Richland, WA)

2007-08-21T23:59:59.000Z

200

Compression station key to Texas pipeline project  

SciTech Connect (OSTI)

This was probably the largest pipeline project in the US last year, and the largest in Texas in the last decade. The new compressor station is a key element in this project. TECO, its servicing dealer, and compression packager worked closely throughout the planning and installation stages of the project. To handle the amount of gas required, TECO selected the GEMINI F604-1 compressor, a four-throw, single-stage unit with a six-inch stroke manufactured by Weatherford Enterra Compression Co. (WECC) in Corpus Christi, TX. TECO also chose WECC to package the compressors. Responsibility for ongoing support of the units will be shared among TECO, the service dealer and the packager. TECO is sending people to be trained by WECC, and because the G3600 family of engines is still relatively new, both the Caterpillar dealer and WECC sent people for advanced training at Caterpillar facilities in Peoria, IL. As part of its service commitment to TECO, the servicing dealer drew up a detailed product support plan, encompassing these five concerns: Training, tooling; parts support; service support; and commissioning.

NONE

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Frequency extrapolation by nonconvex compressive sensing  

SciTech Connect (OSTI)

Tomographic imaging modalities sample subjects with a discrete, finite set of measurements, while the underlying object function is continuous. Because of this, inversion of the imaging model, even under ideal conditions, necessarily entails approximation. The error incurred by this approximation can be important when there is rapid variation in the object function or when the objects of interest are small. In this work, we investigate this issue with the Fourier transform (FT), which can be taken as the imaging model for magnetic resonance imaging (MRl) or some forms of wave imaging. Compressive sensing has been successful for inverting this data model when only a sparse set of samples are available. We apply the compressive sensing principle to a somewhat related problem of frequency extrapolation, where the object function is represented by a super-resolution grid with many more pixels than FT measurements. The image on the super-resolution grid is obtained through nonconvex minimization. The method fully utilizes the available FT samples, while controlling aliasing and ringing. The algorithm is demonstrated with continuous FT samples of the Shepp-Logan phantom with additional small, high-contrast objects.

Chartrand, Rick [Los Alamos National Laboratory; Sidky, Emil Y [UNIV OF CHICAGO; Pan, Xiaochaun [UNIV OF CHICAGO

2010-12-03T23:59:59.000Z

202

University of Arizona Compressed Air Energy Storage  

SciTech Connect (OSTI)

Boiled down to its essentials, the grant’s purpose was to develop and demonstrate the viability of compressed air energy storage (CAES) for use in renewable energy development. While everyone agrees that energy storage is the key component to enable widespread adoption of renewable energy sources, the development of a viable scalable technology has been missing. The Department of Energy has focused on expanded battery research and improved forecasting, and the utilities have deployed renewable energy resources only to the extent of satisfying Renewable Portfolio Standards. The lack of dispatchability of solar and wind-based electricity generation has drastically increased the cost of operation with these components. It is now clear that energy storage coupled with accurate solar and wind forecasting make up the only combination that can succeed in dispatchable renewable energy resources. Conventional batteries scale linearly in size, so the price becomes a barrier for large systems. Flow batteries scale sub-linearly and promise to be useful if their performance can be shown to provide sufficient support for solar and wind-base electricity generation resources. Compressed air energy storage provides the most desirable answer in terms of scalability and performance in all areas except efficiency. With the support of the DOE, Tucson Electric Power and Science Foundation Arizona, the Arizona Research Institute for Solar Energy (AzRISE) at the University of Arizona has had the opportunity to investigate CAES as a potential energy storage resource.

Simmons, Joseph; Muralidharan, Krishna

2012-12-31T23:59:59.000Z

203

Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns  

E-Print Network [OSTI]

Williams, Compressed air energy storage: Theory, resources,study for the compressed air energy storage technology byplant for compressed air energy storage power generation,

Rutqvist, J.

2013-01-01T23:59:59.000Z

204

Porous media compressed air energy storage (PM-CAES): Theory and simulation of the coupled wellbore-reservoir system  

E-Print Network [OSTI]

of selected compressed air energy storage studes, Pacificaspects of compressed-air energy storage in aquifers, J. ofresources and compressed air energy storage (CAES), Energy,

Oldenburg, C.M.

2014-01-01T23:59:59.000Z

205

Characterizing excavation damaged zone and stability of pressurized lined rock caverns for underground compressed air energy storage  

E-Print Network [OSTI]

for Underground Compressed Air Energy Storage Hyung-Mok Kimperformance of compressed air energy storage (CAES) in linedcavern (LRC); Compressed air energy storage (CAES); TOUGH-

Kim, H.M.

2014-01-01T23:59:59.000Z

206

Modeling of coupled thermodynamic and geomechanical performance of underground compressed air energy storage (CAES) in lined rock caverns  

E-Print Network [OSTI]

Williams, Compressed air energy storage: Theory, resources,for the compressed air energy storage technology by thefor compressed air energy storage power generation, Japan

Rutqvist, J.

2013-01-01T23:59:59.000Z

207

General Plasma Inc | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6TheoreticalFuelCellGemini Solar DevelopmentCompressionGeneral

208

Gyrokinetic Particle Simulation of Compressible Electromagnetic Turbulence in High-? Plasmas  

SciTech Connect (OSTI)

Supported by this award, the PI and his research group at the University of California, Irvine (UCI) have carried out computational and theoretical studies of instability, turbulence, and transport in laboratory and space plasmas. Several massively parallel, gyrokinetic particle simulation codes have been developed to study electromagnetic turbulence in space and laboratory plasmas. In space plasma projects, the simulation codes have been successfully applied to study the spectral cascade and plasma heating in kinetic Alfven wave turbulence, the linear and nonlinear properties of compressible modes including mirror instability and drift compressional mode, and the stability of the current sheet instabilities with finite guide field in the context of collisionless magnetic reconnection. The research results have been published in 25 journal papers and presented at many national and international conferences. Reprints of publications, source codes, and other research-related information are also available to general public on the PI’s webpage (http://phoenix.ps.uci.edu/zlin/). Two PhD theses in space plasma physics are highlighted in this report.

Lin, Zhihong

2014-03-13T23:59:59.000Z

209

ENG 4793: Composite Materials and Processes 1 Compression Molding  

E-Print Network [OSTI]

1 ENG 4793: Composite Materials and Processes 1 Compression Molding ver 2 ENG 4793: Composite Materials and Processes 2 ENG 4793: Composite Materials and Processes 3 ENG 4793: Composite Materials and Processes 4 Schematic of a Compression Molding Press ENG 4793: Composite Materials and Processes 5 Matched

Colton, Jonathan S.

210

Circle criterion observer for a compression system Bjrnar Bhagen  

E-Print Network [OSTI]

.gravdahl@itk.ntnu.no Abstract-- Observers for a compression system using turbo compressors are derived for a model that captures speed. Results are validated by simulations. I. MOTIVATION Compression systems using turbo compressors, centrifugal or axial, are exposed to the phenomenons of surge and rotating stall. Surge is an axisymmtrical

Gravdahl, Jan Tommy

211

Using Statistical Transformations to Improve Compression for Linear Decompressors  

E-Print Network [OSTI]

in the test data to reduce the number of specified bits that need to be produced by the linear decompressor described in this paper. 1. Introduction Test data compression provides a means to reduce test costs by reducing tester storage, test time, and test data bandwidth requirements. Compressing the output response

Touba, Nur A.

212

Homogeneous Charge Compression Ignition: Formulation Effect of a Diesel Fuel  

E-Print Network [OSTI]

Homogeneous Charge Compression Ignition: Formulation Effect of a Diesel Fuel on the Initiation and the Combustion Potential of Olefin Impact in a Diesel Base Fuel D. Alseda1,2, X. Montagne1 and P. Dagaut2 1 Compression Ignition: Formulation Effect of a Diesel Fuel on the Initiation and the Combustion - Potential

Paris-Sud XI, Université de

213

Simplified Compression of Redundancy Free Trellis Sections in Turbo Decoder  

E-Print Network [OSTI]

1 Simplified Compression of Redundancy Free Trellis Sections in Turbo Decoder Emmanuel Boutillon that for an M state Turbo decoder, among the L compressed trellis stages, only m = 3 or even m = 2 are necessary turbo-code and/or to reduce its power consumption.1 I. INTRODUCTION The quality of an error control code

Paris-Sud XI, Université de

214

Techno-economic Performance Evaluation of Compressed Air  

E-Print Network [OSTI]

PNNL-22235 Techno-economic Performance Evaluation of Compressed Air Energy Storage in the Pacific of Compressed Air Energy Storage in the Pacific Northwest BP McGrail JE Cabe CL Davidson FS Knudsen DH Bacon MD air energy storage (CAES) in the unique geologic setting of inland Washington and Oregon. The basic

215

Raw Data Compression in Computed Tomography: Noise Shaping  

E-Print Network [OSTI]

Raw Data Compression in Computed Tomography: Noise Shaping Yao Xie (team member: Adam Wang) Project.1 Background X-ray computed tomography (CT) builds on the physical principles of radiography. It uses multiple ring that has a limited data transfer rate. Compression can be used to reduce the data rate through

Xie, Yao

216

Second-order Schemes for Steady Weakly Compressible Liquid Flows  

E-Print Network [OSTI]

]. Under such circumstances, the speed of sound is much larger than the velocity of the liquid, resulting-differences, such flows may display compressibility effects. Mach number, the ratio of fluid velocity to speed of sound1 Second-order Schemes for Steady Weakly Compressible Liquid Flows I. J. Keshtiban , F. Belblidia

Grant, P. W.

217

TIME-PERIODIC SOUND WAVE PROPAGATION COMPRESSIBLE EULER EQUATIONS  

E-Print Network [OSTI]

A PARADIGM FOR TIME-PERIODIC SOUND WAVE PROPAGATION IN THE COMPRESSIBLE EULER EQUATIONS BLAKE consistent with time-periodic sound wave propagation in the 3 Ă? 3 nonlinear compressible Euler equations description of shock-free waves that propagate through an oscillating entropy field without breaking or dis

218

Shock compression of low-density foams  

SciTech Connect (OSTI)

Shock compression of very low density micro-cellular materials allows entirely new regimes of hot fluid states to be investigated experimentally. Using a two-stage light-gas gun to generate strong shocks, temperatures of several eV are readily achieved at densities of roughly 0.5--1 g/cm{sup 3} in large, uniform volumes. The conditions in these hot, expanded fluids are readily found using the Hugoniot jump conditions. We will briefly describe the basic methodology for sample preparation and experimental measurement of shock velocities. We present data for several materials over a range of initial densities. This paper will explore the applications of these methods for investigations of equations of state and phase diagrams, spectroscopy, and plasma physics. Finally, we discus the need for future work on these and related low-density materials.

Holmes, N.C.

1993-07-01T23:59:59.000Z

219

Seneca Compressed Air Energy Storage (CAES) Project  

SciTech Connect (OSTI)

This report provides a review and an analysis of potential environmental justice areas that could be affected by the New York State Electric & Gas (NYSEG) compress air energy storage (CAES) project and identifies existing environmental burden conditions on the area and evaluates additional burden of any significant adverse environmental impact. The review assesses the socioeconomic and demographic conditions of the area surrounding the proposed CAES facility in Schuyler County, New York. Schuyler County is one of 62 counties in New York. Schuyler County’s 2010 population of 18,343 makes it one of the least populated counties in the State (U.S. Census Bureau, 2010). This report was prepared for WorleyParsons by ERM and describes the study area investigated, methods and criteria used to evaluate this area, and the findings and conclusions from the evaluation.

None

2012-11-30T23:59:59.000Z

220

Combustion dynamics in steady compressible flows  

E-Print Network [OSTI]

We study the evolution of a reactive field advected by a one-dimensional compressible velocity field and subject to an ignition-type nonlinearity. In the limit of small molecular diffusivity the problem can be described by a spatially discretized system, and this allows for an efficient numerical simulation. If the initial field profile is supported in a region of size l < lc one has quenching, i.e., flame extinction, where lc is a characteristic length-scale depending on the system parameters (reacting time, molecular diffusivity and velocity field). We derive an expression for lc in terms of these parameters and relate our results to those obtained by other authors for different flow settings.

S. Berti; D. Vergni; A. Vulpiani

2008-07-03T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Quantum Bootstrapping via Compressed Quantum Hamiltonian Learning  

E-Print Network [OSTI]

Recent work has shown that quantum simulation is a valuable tool for learning empirical models for quantum systems. We build upon these results by showing that a small quantum simulators can be used to characterize and learn control models for larger devices for wide classes of physically realistic Hamiltonians. This leads to a new application for small quantum computers: characterizing and controlling larger quantum computers. Our protocol achieves this by using Bayesian inference in concert with Lieb-Robinson bounds and interactive quantum learning methods to achieve compressed simulations for characterization. Whereas Fisher information analysis shows that current methods which employ short-time evolution are suboptimal, interactive quantum learning allows us to overcome this limitation. We illustrate the efficiency of our bootstrapping protocol by showing numerically that an 8-qubit Ising model simulator can be used to calibrate and control a 50 qubit Ising simulator while using only about 750 kilobits of experimental data.

Nathan Wiebe; Christopher Granade; David G. Cory

2015-03-30T23:59:59.000Z

222

Hybrid Vapor Compression Adsorption System: Thermal Storage Using Hybrid Vapor Compression Adsorption System  

SciTech Connect (OSTI)

HEATS Project: UTRC is developing a new climate-control system for EVs that uses a hybrid vapor compression adsorption system with thermal energy storage. The targeted, closed system will use energy during the battery-charging step to recharge the thermal storage, and it will use minimal power to provide cooling or heating to the cabin during a drive cycle. The team will use a unique approach of absorbing a refrigerant on a metal salt, which will create a lightweight, high-energy-density refrigerant. This unique working pair can operate indefinitely as a traditional vapor compression heat pump using electrical energy, if desired. The project will deliver a hot-and-cold battery that provides comfort to the passengers using minimal power, substantially extending the driving range of EVs.

None

2012-01-04T23:59:59.000Z

223

Utilization of CO2 as cushion gas for porous media compressed air energy storage  

E-Print Network [OSTI]

design of compressed air energy storage electric powerS and Williams RH, Compressed Air Energy Storage: Theory,Porous media compressed air energy storage (PM-CAES): theory

Oldenburg, C.M.

2014-01-01T23:59:59.000Z

224

Economic and Technical Tradeoffs Between Open and Closed Cycle Vapor Compression Evaporators  

E-Print Network [OSTI]

compressor. The blowers and centrifugal compressors used for steam recompression are limited to compression ratios of around 2:1 in a single stage. This compression ratio is perfectly adequate for many applications. But if a larger driving force with a... higher compression ratio is desired. two or more compression stages must be used resulting in sig nificantly increased compressor costs. Closed Cycle Vapor Compression A schematic of a closed cycle vapor compression evaporator is shown in Figure 3...

Timm, M. L.

225

High efficiency coarse-grained customised dynamically reconfigurable architecture for digital image processing and compression technologies   

E-Print Network [OSTI]

Digital image processing and compression technologies have significant market potential, especially the JPEG2000 standard which offers outstanding codestream flexibility and high compression ratio. Strong demand for ...

Zhao, Xin

2012-06-25T23:59:59.000Z

226

Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed...  

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

Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed Natural Gas (CNG)-Powered Vehicles Lung Toxicity and Mutagenicity of Emissions From Heavy-Duty Compressed...

227

E-Print Network 3.0 - acute compression fracture Sample Search...  

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

compression fracture Search Powered by Explorit Topic List Advanced Search Sample search results for: acute compression fracture Page: << < 1 2 3 4 5 > >> 1 1. RESERVOIR...

228

EA-1752: Pacific Gas & Electric Company (PG&E), Compressed Air...  

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

52: Pacific Gas & Electric Company (PG&E), Compressed Air Energy Storage (CAES) Compression Testing Phase Project, San Joaquin County, California EA-1752: Pacific Gas & Electric...

229

Quantitative study of fluctuation effects by fast lattice Monte Carlo simulations: Compression of grafted homopolymers  

SciTech Connect (OSTI)

Using fast lattice Monte Carlo (FLMC) simulations [Q. Wang, Soft Matter 5, 4564 (2009)] and the corresponding lattice self-consistent field (LSCF) calculations, we studied a model system of grafted homopolymers, in both the brush and mushroom regimes, in an explicit solvent compressed by an impenetrable surface. Direct comparisons between FLMC and LSCF results, both of which are based on the same Hamiltonian (thus without any parameter-fitting between them), unambiguously and quantitatively reveal the fluctuations/correlations neglected by the latter. We studied both the structure (including the canonical-ensemble averages of the height and the mean-square end-to-end distances of grafted polymers) and thermodynamics (including the ensemble-averaged reduced energy density and the related internal energy per chain, the differences in the Helmholtz free energy and entropy per chain from the uncompressed state, and the pressure due to compression) of the system. In particular, we generalized the method for calculating pressure in lattice Monte Carlo simulations proposed by Dickman [J. Chem. Phys. 87, 2246 (1987)], and combined it with the Wang-Landau–Optimized Ensemble sampling [S. Trebst, D. A. Huse, and M. Troyer, Phys. Rev. E 70, 046701 (2004)] to efficiently and accurately calculate the free energy difference and the pressure due to compression. While we mainly examined the effects of the degree of compression, the distance between the nearest-neighbor grafting points, the reduced number of chains grafted at each grafting point, and the system fluctuations/correlations in an athermal solvent, the ?-solvent is also considered in some cases.

Zhang, Pengfei; Wang, Qiang, E-mail: q.wang@colostate.edu [Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523-1370 (United States)] [Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, Colorado 80523-1370 (United States)

2014-01-28T23:59:59.000Z

230

LA-2271 CHEMISTRY-GENERAL  

Office of Scientific and Technical Information (OSTI)

Ed. LOS ALAMOS SCIENTIFIC LABORATORY OF THE UNIVERSITY OF CALIFORNIA LOS ALAMOS NEW MEXICO REPORT WRITTEN: August 1958 REPORT DISTRIBUTED: March 17, 1959 COMPRESSIBILITY FACTORS...

231

Renewed experimentation with Ranchero flux compression genereators  

SciTech Connect (OSTI)

In the late 1990s, Los Alamos pursued a coaxial flux compression generator (FCG) concept that was described in several publications under the name 'Ranchero.' These FCGs were designed to be cost effective high current generators, and a variety of configurations were tested. The Ranchero armature is a 152 mm diameter aluminum cylinder with a 6 mm thick wall. The high explosive (HE) is detonated simultaneously on axis, and as the armature expands a factor of two, the wall thins to {approx}3 mm. At the final 300 mm diameter, the circumference is over 900 mm, and this should allow currents to be generated in the 90 MA range. No tests significantly over 50 MA have been performed but an experiment is planned. We have recently begun using Ranchero devices for a new application and we continue to improve the design. In this paper we describe recent tests of Ranchero and its subsystems. The load for our new application is an imploding aluminum liner that would deform due to the magnetic pressure applied during the initial flux loading. It will, however, implode properly when powered only during the {approx}29 {micro}s Ranchero flux compression time. This gives rise to a new system with explOSively formed fuse (EFF) opening switches and an integral closing switch that isolates the load. A capacitor bank delivers 2.8 MA to the Ranchero circuit in {approx}85 {micro}s. During this time, four parallel 63.5 mm wide EFFs, external to the coaxial system, complete the circuit. After armature motion begins, insulation which initially isolates the load is severed, connecting the load to the FCG in parallel with the EFFs. External HE charges are initiated on each of the EFFs to produce a resistance rise timed to not precede closure of the load isolation switch. The EFFs achieve significant resistance, and the flux remaining in the 191 nH generator and 3 nH transmission line is compressed to generate 30.85 MA in a {approx}12.5 nH static load. On three tests, the EFF system has operated flawlessly, and only {approx}100kA is driven back into the EFFs during peak voltage of the generator output. A test incorporating a 19.5 nH dual liner dynamic load has also been completed, and these results are also presented. Ranchero generators have been operated with armatures from 43 cm to 1.4 m long, corresponding to initial inductances from 56 to 191 nH. MHD code modeling gives better agreement with experiments using modules 43 cm long than the 1.4 m modules, and these results will also be presented.

Goforth, James H [Los Alamos National Laboratory; Herrera, Dennis H [Los Alamos National Laboratory; Tasker, Douglas G [Los Alamos National Laboratory; Torres, David T [Los Alamos National Laboratory; Atchison, W. L. [Los Alamos National Laboratory; Colgate, S. A. [Los Alamos National Laboratory; Griego, J. R. [Los Alamos National Laboratory; Guzik, J. [Los Alamos National Laboratory; Holtkamp, D. B. [Los Alamos National Laboratory; Idzorek, G. [Los Alamos National Laboratory; Kaul, A [Los Alamos National Laboratory; Kirkpatrick, R. C. [Los Alamos National Laboratory; Menikoff, R. [Los Alamos National Laboratory; Meyer, R. K. [Los Alamos National Laboratory; Oona, H. [Los Alamos National Laboratory; Reardon, P. T. [Los Alamos National Laboratory; Reinovsky, R. E. [Los Alamos National Laboratory; Rousculp, C. L. [Los Alamos National Laboratory; Sgro, A. G. [Los Alamos National Laboratory; Tabaka, L. J. [Los Alamos National Laboratory; Watt, R. G. [Los Alamos National Laboratory; Riesman, D. B. [LLNL

2010-11-08T23:59:59.000Z

232

EFFECT OF COMPRESSION ON CONDUCTIVITY AND MORPHOLOGY OF PFSA MEMBRANES  

SciTech Connect (OSTI)

Polymer-Electrolyte-Fuel-Cells (PEFCs) are promising candidates for powering vehicles and portable devices using renewable-energy sources. The core of a PEFC is the solid electrolyte membrane that conducts protons from anode to cathode, where water is generated. The conductivity of the membrane, however, depends on the water content of the membrane, which is strongly related to the cell operating conditions. The membrane and other cell components are typically compressed to minimize various contact resistances. Moreover, the swelling of a somewhat constrained membrane in the cell due to the humidity changes generates additional compressive stresses in the membrane. These external stresses are balanced by the internal swelling pressure of the membrane and change the swelling equilibrium. It was shown using a fuel-cell setup that compression could reduce the water content of the membrane or alter the cell resistance. Nevertheless, the effect of compression on the membrane’s transport properties is yet to be understood, as well as its implications in the structure-functions relationships of the membrane. We previously studied, both experimentally and theoretically, how compression affects the water content of the membrane.6 However, more information is required the gain a fundamental understanding of the compression effects. In this talk, we present the results of our investigation on the in-situ conductivity of the membrane as a function of humidity and cell compression pressure. Moreover, to better understand the morphology of compressed membrane, small-angle X-ray-scattering (SAXS) experiments were performed. The conductivity data is then analyzed by investigating the size of the water domains of the compressed membrane determined from the SAXS measurements.

Kusoglu, Ahmet; Weber, Adam; Jiang, Ruichin; Gittleman, Craig

2011-07-20T23:59:59.000Z

233

MAURICE PILLET , JEAN-LUC MAIRE  

E-Print Network [OSTI]

, Six Sigma, QRQC... Ces démarches peuvent apparaitre comme concurrentielles et leur mise en place dans to support the continuous improvement approaches as PDCA, 8D, Six Sigma, QRQC... These approaches may appear a methodological guide to employees having to implement these steps. Mots clés ­ Résolution de problÚme, Six Sigma

Paris-Sud XI, Université de

234

File:Lucs.pdf | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublicIDAPowerPlantSitingConstruction.pdf JumpApschem.pdf Jumptight-gas.pdfFutInformation

235

Compression induced delamination in a unidirectional graphite/epoxy composite  

E-Print Network [OSTI]

110 Vl Table LIST OF TABLES Page 1 Compression Delamination Test Results P = 19. 79 N (4, 45 lb) E* = 136. 55 GPa (19. 8E6 Psi) s 2 Compression Delamination Test Results P = 24. OZ N (5. 4 lb) E = 136. 55 GPa (19. 8E6 Psi) s 3 Compression... Involving Different Crack Surface Displacements 3 fl . P /P 4 f2 vs. Pa/Pc 5 f3 vs. Pa/Pc 6 f4 vs. Pa/Pc 7 Test Specimen 8 Specimen Geometry 9 Cure Cycle for ASl/3502 Graphite/Epoxy Panels 10 Split Laminate in the Form of a Double-Cantilever Beam...

Earley, John W.

1981-01-01T23:59:59.000Z

236

Analytical bunch compression studies for FLUTE  

E-Print Network [OSTI]

The current article deals with analytical bunch compression studies for FLUTE whose results are compared to simulations. FLUTE is a linac-based electron accelerator with a design energy of approximately 40 MeV currently being constructed at the Karlsruhe Institute of Technology. One of the goals of FLUTE is to generate electron bunches with their length lying in the femtosecond regime. In the first phase this will be accomplished using a magnetic bunch compressor. This compressor forms the subject of the studies presented. The paper is divided into three parts. The first part deals with pure geometric investigations of the bunch compressor where space charge effects and the back reaction of bunches with coherent synchrotron radiation (CSR) are neglected. The second part is dedicated to the treatment of space charge effects and the third part gives some analytical results on the emission of CSR. The upshot is that the results of the first and the third part agree quite well with what is obtained from simulatio...

Schreck, M

2014-01-01T23:59:59.000Z

237

Effect of Compressibility on the Annihilation Process  

E-Print Network [OSTI]

Annihilation processes, where the reacting particles are influenced by some external advective field, are one of the simplest examples of nonlinear statistical systems. This type of processes can be observed in miscellaneous chemical, biological or physical systems. In low space dimensions usual description by means of kinetic rate equation is not sufficient and the effect of density fluctuations must be taken into ac- count. Using perturbative renormalization group we study the influ- ence of random velocity field on the kinetics of single-species annihila- tion reaction at and below its critical dimension $d_c = 2$. The advecting velocity field is modelled by the self-similar in space Gaussian variable finite correlated in time (Antonov-Kraichnan model). Effect of the compressibility of velocity field is taken into account and the model is analyzed near its critical dimension by means of three-parameter expansion in $\\epsilon$, $\\Delta$ and $\\eta$. Here $\\epsilon$ is the deviation from the Kolmogorov scaling, $\\Delta$ is the deviation from the (critical) space dimension 2 and {\\eta} is the deviation from the parabolic dispersion law. Depending on the value of these exponents and the value of compressiblity parameter {\\alpha}, the studied model can exhibit various asymptotic (long-time) regimes corresponding to the infrared (IR) fixed points of the renormalization group. The possible regimes are summarized and the decay rates for the mean particle number are calculated in the leading order of the perturbation theory.

Michal Hnati?; Juha Honkonen; TomᚠLu?ivjanskę

2013-02-01T23:59:59.000Z

238

Forklift Training -GeneralForklift Training -General OSHA Standards  

E-Print Network [OSTI]

and precautions for the types of trucks the driver will use · Truck controls and instrumentation · Engine or motor controls and instrumentation · Engine or motor operation · Steering and maneuvering · Visibility (including motors or internal combustion engines. · It does not apply to compressed air or nonflammable compressed

Portman, Douglas

239

Representation and compression of multidimensional piecewise functions using surflets  

E-Print Network [OSTI]

We study the representation, approximation, and compression of functions in M dimensions that consist of constant or smooth regions separated by smooth (M-1)-dimensional discontinuities. Examples include images containing ...

Chandrasekaran, Venkat

240

Heat release effects on decaying homogeneous compressible turbulence  

E-Print Network [OSTI]

turbulence. A good understanding of high-enthalpy compressible turbulence is crucial for analyzing the flow around re-entry spacecrafts and hypersonic flight vehicles, and inside scramjet engines. One main factor affecting turbulence in these high...

Lee, Kurn Chul

2009-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Stresses resulting from compression of bulk cotton lint fibers  

E-Print Network [OSTI]

The modulus of elasticity, Poisson's ratio and shear modulus of bulk cotton lint fibers were determined. The cotton lint was compressed in an MTS machine to a predetermined density, and the resilient forces induced by the cotton lint after being...

Chimbombi, Ezekiel Maswe

1998-01-01T23:59:59.000Z

242

XML Structure Compression Mark Levene and Peter Wood  

E-Print Network [OSTI]

XML Structure Compression Mark Levene and Peter Wood Birkbeck College, University of London London WC1E 7HX, U.K. {m.levene,p.wood}@dcs.bbk.ac.uk Abstract XML is becoming the universal language

Levene, Mark

243

Outphasing Energy Recovery Amplifier With Resistance Compression for Improved Efficiency  

E-Print Network [OSTI]

We describe a new outphasing energy recovery amplifier (OPERA) which replaces the isolation resistor in the conventional matched combiner with a resistance-compressed rectifier for improved efficiency. The rectifier recovers ...

Godoy, Philip Andrew

244

Business Case for Compressed Natural Gas in Municipal Fleets  

SciTech Connect (OSTI)

This report describes how NREL used the CNG Vehicle and Infrastructure Cash-Flow Evaluation (VICE) model to establish guidance for fleets making decisions about using compressed natural gas.

Johnson, C.

2010-06-01T23:59:59.000Z

245

Weak-strong clustering transition in renewing compressible flows  

E-Print Network [OSTI]

We investigate the statistical properties of Lagrangian tracers transported by a time-correlated compressible renewing flow. We show that the preferential sampling of the phase space performed by tracers yields significant differences between the Lagrangian statistics and its Eulerian counterpart. In particular, the effective compressibility experienced by tracers has a non-trivial dependence on the time correlation of the flow. We examine the consequence of this phenomenon on the clustering of tracers, focusing on the transition from the weak- to the strong-clustering regime. We find that the critical compressibility at which the transition occurs is minimum when the time correlation of the flow is of the order of the typical eddy turnover time. Further, we demonstrate that the clustering properties in time-correlated compressible flows are non-universal and are strongly influenced by the spatio-temporal structure of the velocity field.

Ajinkya Dhanagare; Stefano Musacchio; Dario Vincenzi

2014-11-01T23:59:59.000Z

246

Fuel effects in homogeneous charge compression ignition (HCCI) engines  

E-Print Network [OSTI]

Homogenous-charge, compression-ignition (HCCI) combustion is a new method of burning fuel in internal combustion (IC) engines. In an HCCI engine, the fuel and air are premixed prior to combustion, like in a spark-ignition ...

Angelos, John P. (John Phillip)

2009-01-01T23:59:59.000Z

247

Global Inference for Sentence Compression: An Integer Linear Programming Approach   

E-Print Network [OSTI]

In this thesis we develop models for sentence compression. This text rewriting task has recently attracted a lot of attention due to its relevance for applications (e.g., summarisation) and simple formulation by means ...

Clarke, James

2008-01-01T23:59:59.000Z

248

Grid adaptation for functional outputs of compressible flow simulations  

E-Print Network [OSTI]

An error correction and grid adaptive method is presented for improving the accuracy of functional outputs of compressible flow simulations. The procedure is based on an adjoint formulation in which the estimated error in ...

Venditti, David Anthony, 1973-

2002-01-01T23:59:59.000Z

249

Mission Design for Compressive Sensing with Mobile Robots  

E-Print Network [OSTI]

This paper considers mission design strategies for mobile robots whose task is to perform spatial sampling of a static environmental field, in the framework of compressive sensing. According to this theory, we can reconstruct ...

Hummel, Robert

250

High compression ratio turbo gasoline engine operation using alcohol enhancement  

E-Print Network [OSTI]

Gasoline - ethanol blends were explored as a strategy to mitigate engine knock, a phenomena in spark ignition engine combustion when a portion of the end gas is compressed to the point of spontaneous auto-ignition. This ...

Lewis, Raymond (Raymond A.)

2013-01-01T23:59:59.000Z

251

Pre-In-Plant Training Webinar (Compressed Air)  

Broader source: Energy.gov [DOE]

This pre-In-Plant training webinar for the Better Plants Program covers the basics of finding energy savings in Compressed Air systems and introduces the AIRMaster+ software tool.

252

Copper laser modulator driving assembly including a magnetic compression laser  

DOE Patents [OSTI]

A laser modulator (10) having a low voltage assembly (12) with a plurality of low voltage modules (14) with first stage magnetic compression circuits (20) and magnetic assist inductors (28) with a common core (91), such that timing of the first stage magnetic switches (30b) is thereby synchronized. A bipolar second stage of magnetic compression (42) is coupled to the low voltage modules (14) through a bipolar pulse transformer (36) and a third stage of magnetic compression (44) is directly coupled to the second stage of magnetic compression (42). The low voltage assembly (12) includes pressurized boxes (117) for improving voltage standoff between the primary winding assemblies (34) and secondary winding (40) contained therein.

Cook, Edward G. (Livermore, CA); Birx, Daniel L. (Oakley, CA); Ball, Don G. (Livermore, CA)

1994-01-01T23:59:59.000Z

253

Efficiency of compressed-air systems. Final report  

SciTech Connect (OSTI)

The program undertaken by this contract is intended to quantify the current state of knowledge in American industry concerning the energy efficient design and operation of industrial compressed air systems and system components. Since there is no standard reference for designers and operators of compressed air systems which provides guidelines for maximizing the energy efficiency of these systems, a major product of this contract was the preparation of a guidebook for this purpose.

Not Available

1983-01-01T23:59:59.000Z

254

The Many Faces of a Compressed Air Audit  

E-Print Network [OSTI]

with independent compressed air consultant organizations. Energy Audits Supplied by DOE-Sponsored University Students University students led by their instructors as part of their training perform these studies. Often the reports are accurate about...Air Power USA, Inc. PO Box 292 Pickerington, OH 43147 740 862-4112 740 862-8464 (Fax) www.airpowerusainc.com THE MANY FACES OF A COMPRESSED AIR AUDIT Industrial Energy Technology Conference May 9-12, 2006 New Orleans, LA Today...

Kemp, H. L.

2006-01-01T23:59:59.000Z

255

Two-phase compressibility factors for retrograde gases  

E-Print Network [OSTI]

of a liquid phase. Gas compressibility factors are used in the gas material balance equations. These equations are used to estimate initial gas in place and reserves. Normally gas compressibility factors are used when a reservoir fluid depletion.... 0 on a material balance plot. Dake's equation has limited usefulness because the initial gas in place G is an unknown in the field. Also note that Gp at the abandonment pressure is the ultimate reserves of the reservoir. We can also derive...

Rayes, Daniel George

1989-01-01T23:59:59.000Z

256

Hot compression process for making edge seals for fuel cells  

DOE Patents [OSTI]

A hot compression process for forming integral edge seals in anode and cade assemblies wherein the assemblies are made to a nominal size larger than a finished size, beads of AFLAS are applied to a band adjacent the peripheral margins on both sides of the assemblies, the assemblies are placed in a hot press and compressed for about five minutes with a force sufficient to permeate the peripheral margins with the AFLAS, cooled and cut to finished size.

Dunyak, Thomas J. (Blacksburg, VA); Granata, Jr., Samuel J. (South Greensburg, PA)

1994-01-01T23:59:59.000Z

257

Compression effects on pressure loss in flexible HVAC ducts  

SciTech Connect (OSTI)

A study was conducted to evaluate the effect of compression on pressure drop in flexible, spiral wire helix core ducts used in residential and light commercial applications. Ducts of 6 inches, 8 inches and 10 inches (150, 200 and 250 mm) nominal diameters were tested under different compression configurations following ASHRAE Standard 120-1999--Methods of Testing to Determine Flow Resistance of HVAC Air Ducts and Fittings. The results showed that the available published references tend to underestimate the effects of compression. The study demonstrated that moderate compression in flexible ducts, typical of that often seen in field installations, could increase the pressure drop by a factor of four, while further compression could increase the pressure drop by factors close to ten. The results proved that the pressure drop correction factor for compressed ducts cannot be independent of the duct size, as suggested by ASHRAE Fundamentals, and therefore a new relationship was developed for better quantification of the pressure drop in flexible ducts. This study also suggests potential improvements to ASHRAE Standard 120-1999 and provides new data for duct design.

Abushakra, Bass; Walker, Iain S.; Sherman, Max H.

2002-07-01T23:59:59.000Z

258

SCADA Protocol Anomaly Detection Utilizing Compression (SPADUC) 2013  

SciTech Connect (OSTI)

There is a significant need to protect the nation’s energy infrastructures from malicious actors using cyber methods. Supervisory, Control, and Data Acquisition (SCADA) systems may be vulnerable due to the insufficient security implemented during the design and deployment of these control systems. This is particularly true in older legacy SCADA systems that are still commonly in use. The purpose of INL’s research on the SCADA Protocol Anomaly Detection Utilizing Compression (SPADUC) project was to determine if and how data compression techniques could be used to identify and protect SCADA systems from cyber attacks. Initially, the concept was centered on how to train a compression algorithm to recognize normal control system traffic versus hostile network traffic. Because large portions of the TCP/IP message traffic (called packets) are repetitive, the concept of using compression techniques to differentiate “non-normal” traffic was proposed. In this manner, malicious SCADA traffic could be identified at the packet level prior to completing its payload. Previous research has shown that SCADA network traffic has traits desirable for compression analysis. This work investigated three different approaches to identify malicious SCADA network traffic using compression techniques. The preliminary analyses and results presented herein are clearly able to differentiate normal from malicious network traffic at the packet level at a very high confidence level for the conditions tested. Additionally, the master dictionary approach used in this research appears to initially provide a meaningful way to categorize and compare packets within a communication channel.

Gordon Rueff; Lyle Roybal; Denis Vollmer

2013-01-01T23:59:59.000Z

259

Selective document image data compression technique  

DOE Patents [OSTI]

A method of storing information from filled-in form-documents comprises extracting the unique user information in the foreground from the document form information in the background. The contrast of the pixels is enhanced by a gamma correction on an image array, and then the color value of each of pixel is enhanced. The color pixels lying on edges of an image are converted to black and an adjacent pixel is converted to white. The distance between black pixels and other pixels in the array is determined, and a filled-edge array of pixels is created. User information is then converted to a two-color format by creating a first two-color image of the scanned image by converting all pixels darker than a threshold color value to black. All the pixels that are lighter than the threshold color value to white. Then a second two-color image of the filled-edge file is generated by converting all pixels darker than a second threshold value to black and all pixels lighter than the second threshold color value to white. The first two-color image and the second two-color image are then combined and filtered to smooth the edges of the image. The image may be compressed with a unique Huffman coding table for that image. The image file is also decimated to create a decimated-image file which can later be interpolated back to produce a reconstructed image file using a bilinear interpolation kernel.--(235 words)

Fu, Chi-Yung (29 Cameo Way, San Francisco, CA 94131); Petrich, Loren I. (1674 Cordoba St., #4, Livermore, CA 94550)

1998-01-01T23:59:59.000Z

260

Selective document image data compression technique  

DOE Patents [OSTI]

A method of storing information from filled-in form-documents comprises extracting the unique user information in the foreground from the document form information in the background. The contrast of the pixels is enhanced by a gamma correction on an image array, and then the color value of each of pixel is enhanced. The color pixels lying on edges of an image are converted to black and an adjacent pixel is converted to white. The distance between black pixels and other pixels in the array is determined, and a filled-edge array of pixels is created. User information is then converted to a two-color format by creating a first two-color image of the scanned image by converting all pixels darker than a threshold color value to black. All the pixels that are lighter than the threshold color value to white. Then a second two-color image of the filled-edge file is generated by converting all pixels darker than a second threshold value to black and all pixels lighter than the second threshold color value to white. The first two-color image and the second two-color image are then combined and filtered to smooth the edges of the image. The image may be compressed with a unique Huffman coding table for that image. The image file is also decimated to create a decimated-image file which can later be interpolated back to produce a reconstructed image file using a bilinear interpolation kernel. 10 figs.

Fu, C.Y.; Petrich, L.I.

1998-05-19T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Shock compression and expansion in central collisions  

SciTech Connect (OSTI)

Physics of central symmetric reactions of heavy nuclei, in the beam energy range from few tens of MeV to a couple of GeV per nucleon, is discussed. Within transport simulations, it is shown that shock fronts perpendicular to the beam axis form in the head-on reactions. The fronts propagate into projectile and target and they separate hot compressed matter from normal matter. With an increase of the impact parameter, the angle of inclination of fronts relative to the beam axis decreases, and in-between the fronts a weak tangential discontinuity develops. Hot matter exposed to the vacuum in directions perpendicular to the shock motion (and parallel to fronts), starts to expand sideways, early within reactions. Expansion in the direction of shock motion follows, after the shocks traverse nuclei, but due to the delay does not acquire same strength. Expansion affects angular distributions and mean-energy components, and further shapes of spectra and mean energies of different particles emitted into any one direction, and also particle yields. Both the anisotropy in the expansion and a collective motion associated with the weak discontinuity, affect the magnitude of sideward flow within reaction plane. Differences in mean particle energy components in and out of the reaction plane in semicentral collisions, depend sensitively on the relative magnitude of shock speed in normal matter and speed of sound in hot matter. The missing energy, considered in the past in association with low measured pion-multiplicity in central reactions, may be identified with the energy of collective expansion.

Danielewicz, P. [Univ. of Washington, Seattle, WA (United States). Institute for Nuclear Theory]|[Michigan State Univ., East Lansing, MI (United States)

1995-01-01T23:59:59.000Z

262

BAdvanced adiabatic compressed air energy storage for the article has been accepted for inclusion  

E-Print Network [OSTI]

advantages, only compressed air energy storage (“CAES”) has the storage capacity of pumped hydro, but with

Chris Bullough; Christoph Gatzen; Christoph Jakiel; Martin Koller; Andreas Nowi; Stefan Zunft; Alstom Power; Technology Centre; Leicester Le Lh

2004-01-01T23:59:59.000Z

263

Paper Number (Assigned by IFPE Staff) Compressed Air Energy Storage for Offshore Wind Turbines  

E-Print Network [OSTI]

transmitting peak power levels. A solution to these issues is a novel highefficiency compressed air energy

Perry Y. Li; Eric Loth; Terrence W. Simon; James D. Van De Ven; Stephen E. Crane

264

Liquid piston gas compression James D. Van de Ven a,*, Perry Y. Li b,1  

E-Print Network [OSTI]

. As the compressed gas cools at constant pressure in a storage reservoir, the potential energy of the gas de- creases process and enables efficient energy storage through gas compression. Current applications involving piston Gas compression Air compressor Compression efficiency a b s t r a c t A liquid piston concept

Li, Perry Y.

265

Info-Greedy Sequential Adaptive Compressed Sensing  

E-Print Network [OSTI]

] (Ct)/H(F) and P[M = O(H(F))] = 1 - o(1). #12;k-sparse signal: windfarm example n wind turbines more general signal and noise model new algorithms: sparse measurement #12;Information theoretical in Algorithm 5. The following theorem shes the error bound. em V.1 (White Gaussian noise added prior

Xie, Yao

266

System using data compression and hashing adapted for use for multimedia encryption  

DOE Patents [OSTI]

A system and method is disclosed for multimedia encryption. Within the system of the present invention, a data compression module receives and compresses a media signal into a compressed data stream. A data acquisition module receives and selects a set of data from the compressed data stream. And, a hashing module receives and hashes the set of data into a keyword. The method of the present invention includes the steps of compressing a media signal into a compressed data stream; selecting a set of data from the compressed data stream; and hashing the set of data into a keyword.

Coffland, Douglas R. (Livermore, CA)

2011-07-12T23:59:59.000Z

267

Energy recovery during expansion of compressed gas using power plant low-quality heat sources  

DOE Patents [OSTI]

A method of recovering energy from a cool compressed gas, compressed liquid, vapor, or supercritical fluid is disclosed which includes incrementally expanding the compressed gas, compressed liquid, vapor, or supercritical fluid through a plurality of expansion engines and heating the gas, vapor, compressed liquid, or supercritical fluid entering at least one of the expansion engines with a low quality heat source. Expansion engines such as turbines and multiple expansions with heating are disclosed.

Ochs, Thomas L. (Albany, OR); O'Connor, William K. (Lebanon, OR)

2006-03-07T23:59:59.000Z

268

Real-Time SCADA Cyber Protection Using Compression Techniques  

SciTech Connect (OSTI)

The Department of Energy’s Office of Electricity Delivery and Energy Reliability (DOE-OE) has a critical mission to secure the energy infrastructure from cyber attack. Through DOE-OE’s Cybersecurity for Energy Delivery Systems (CEDS) program, the Idaho National Laboratory (INL) has developed a method to detect malicious traffic on Supervisory, Control, and Data Acquisition (SCADA) network using a data compression technique. SCADA network traffic is often repetitive with only minor differences between packets. Research performed at the INL showed that SCADA network traffic has traits desirable for using compression analysis to identify abnormal network traffic. An open source implementation of a Lempel-Ziv-Welch (LZW) lossless data compression algorithm was used to compress and analyze surrogate SCADA traffic. Infected SCADA traffic was found to have statistically significant differences in compression when compared against normal SCADA traffic at the packet level. The initial analyses and results are clearly able to identify malicious network traffic from normal traffic at the packet level with a very high confidence level across multiple ports and traffic streams. Statistical differentiation between infected and normal traffic level was possible using a modified data compression technique at the 99% probability level for all data analyzed. However, the conditions tested were rather limited in scope and need to be expanded into more realistic simulations of hacking events using techniques and approaches that are better representative of a real-world attack on a SCADA system. Nonetheless, the use of compression techniques to identify malicious traffic on SCADA networks in real time appears to have significant merit for infrastructure protection.

Lyle G. Roybal; Gordon H Rueff

2013-11-01T23:59:59.000Z

269

Word aligned bitmap compression method, data structure, and apparatus  

DOE Patents [OSTI]

The Word-Aligned Hybrid (WAH) bitmap compression method and data structure is a relatively efficient method for searching and performing logical, counting, and pattern location operations upon large datasets. The technique is comprised of a data structure and methods that are optimized for computational efficiency by using the WAH compression method, which typically takes advantage of the target computing system's native word length. WAH is particularly apropos to infrequently varying databases, including those found in the on-line analytical processing (OLAP) industry, due to the increased computational efficiency of the WAH compressed bitmap index. Some commercial database products already include some version of a bitmap index, which could possibly be replaced by the WAH bitmap compression techniques for potentially increased operation speed, as well as increased efficiencies in constructing compressed bitmaps. Combined together, this technique may be particularly useful for real-time business intelligence. Additional WAH applications may include scientific modeling, such as climate and combustion simulations, to minimize search time for analysis and subsequent data visualization.

Wu, Kesheng; Shoshani, Arie; Otoo, Ekow

2004-12-14T23:59:59.000Z

270

Generalized concatenated quantum codes  

E-Print Network [OSTI]

We discuss the concept of generalized concatenated quantum codes. This generalized concatenation method provides a systematical way for constructing good quantum codes, both stabilizer codes and nonadditive codes. Using ...

Grassl, Markus

271

The FBI compression standard for digitized fingerprint images  

SciTech Connect (OSTI)

The FBI has formulated national standards for digitization and compression of gray-scale fingerprint images. The compression algorithm for the digitized images is based on adaptive uniform scalar quantization of a discrete wavelet transform subband decomposition, a technique referred to as the wavelet/scalar quantization method. The algorithm produces archival-quality images at compression ratios of around 15 to 1 and will allow the current database of paper fingerprint cards to be replaced by digital imagery. A compliance testing program is also being implemented to ensure high standards of image quality and interchangeability of data between different implementations. We will review the current status of the FBI standard, including the compliance testing process and the details of the first-generation encoder.

Brislawn, C.M.; Bradley, J.N. [Los Alamos National Lab., NM (United States); Onyshczak, R.J. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Hopper, T. [Federal Bureau of Investigation, Washington, DC (United States)

1996-10-01T23:59:59.000Z

272

Compressive strength of concrete and mortar containing fly ash  

DOE Patents [OSTI]

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.

Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

1997-01-01T23:59:59.000Z

273

Compressive strength of concrete and mortar containing fly ash  

DOE Patents [OSTI]

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specifications required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs. 33 figs.

Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

1997-04-29T23:59:59.000Z

274

Compressive strength of concrete and mortar containing fly ash  

DOE Patents [OSTI]

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specification required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs.

Liskowitz, John W. (Belle Mead, NJ); Wecharatana, Methi (Parsippany, NJ); Jaturapitakkul, Chai (Bangkok, TH); Cerkanowicz, deceased, Anthony E. (late of Livingston, NJ)

1998-01-01T23:59:59.000Z

275

Compressive strength of concrete and mortar containing fly ash  

DOE Patents [OSTI]

The present invention relates to concrete, mortar and other hardenable mixtures comprising cement and fly ash for use in construction. The invention includes a method for predicting the compressive strength of such a hardenable mixture, which is very important for planning a project. The invention also relates to hardenable mixtures comprising cement and fly ash which can achieve greater compressive strength than hardenable mixtures containing only concrete over the time period relevant for construction. In a specific embodiment, a formula is provided that accurately predicts compressive strength of concrete containing fly ash out to 180 days. In other specific examples, concrete and mortar containing about 15% to 25% fly ash as a replacement for cement, which are capable of meeting design specification required for building and highway construction, are provided. Such materials can thus significantly reduce construction costs. 33 figs.

Liskowitz, J.W.; Wecharatana, M.; Jaturapitakkul, C.; Cerkanowicz, A.E.

1998-12-29T23:59:59.000Z

276

Gas turbine power plant with supersonic shock compression ramps  

DOE Patents [OSTI]

A gas turbine engine. The engine is based on the use of a gas turbine driven rotor having a compression ramp traveling at a local supersonic inlet velocity (based on the combination of inlet gas velocity and tangential speed of the ramp) which compresses inlet gas against a stationary sidewall. The supersonic compressor efficiently achieves high compression ratios while utilizing a compact, stabilized gasdynamic flow path. Operated at supersonic speeds, the inlet stabilizes an oblique/normal shock system in the gasdynamic flow path formed between the rim of the rotor, the strakes, and a stationary external housing. Part load efficiency is enhanced by use of a lean pre-mix system, a pre-swirl compressor, and a bypass stream to bleed a portion of the gas after passing through the pre-swirl compressor to the combustion gas outlet. Use of a stationary low NOx combustor provides excellent emissions results.

Lawlor, Shawn P. (Bellevue, WA); Novaresi, Mark A. (San Diego, CA); Cornelius, Charles C. (Kirkland, WA)

2008-10-14T23:59:59.000Z

277

Indentation size effect and the plastic compressibility of glass  

SciTech Connect (OSTI)

Oxide glasses exhibit significant densification under an applied isostatic pressure at the glass transition temperature. The glass compressibility is correlated with the chemical composition and atomic packing density, e.g., borate glasses with planar triangular BO{sub 3} units are more disposed for densification than silicate glasses with tetrahedral units. We here show that there is a direct relation between the plastic compressibility following hot isostatic compression and the extent of the indentation size effect (ISE), which is the decrease of hardness with indentation load exhibited by most materials. This could suggest that the ISE is correlated with indentation-induced shear bands, which should form in greater density when the glass network is more adaptable to volume changes through structural and topological rearrangements under an applied pressure.

Smedskjaer, Morten M., E-mail: mos@bio.aau.dk [Section of Chemistry, Aalborg University, 9000 Aalborg (Denmark)

2014-06-23T23:59:59.000Z

278

Compressive turbulent cascade and heating in the solar wind  

SciTech Connect (OSTI)

A turbulent energy cascade has been recently identified in high-latitude solar wind data samples by using a Yaglom-like relation. However, analogous scaling law, suitably modified to take into account compressible fluctuations, has been observed in a much more extended fraction of the same data set recorded by the Ulysses spacecraft. Thus, it seems that large scale density fluctuations, despite their low amplitude, play a major role in the basic scaling properties of turbulence. The compressive turbulent cascade, moreover, seems to be able to supply the energy needed to account for the local heating of the non-adiabatic solar wind.

Marino, R. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Sorriso-Valvo, L. [Liquid Crystal Laboratory, INFM/CNR, Ponte Bucci 33B, I-87036 Rende (Italy); Carbone, V. [Dipartimento di Fisica, Universita della Calabria, Ponte Bucci 31C, I-87036 Rende (Italy); Noullez, A. [University of Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Bruno, R. [INAF-Istituto Fisica Spazio Interplanetario, Rome (Italy)

2010-03-25T23:59:59.000Z

279

Negative compressibility observed in graphene containing resonant impurities  

SciTech Connect (OSTI)

We observed negative compressibility in monolayer graphene containing resonant impurities under different magnetic fields. Hydrogenous impurities were introduced into graphene by electron beam (e-beam) irradiation. Resonant states located in the energy region of {+-}0.04 eV around the charge neutrality point were probed in e-beam-irradiated graphene capacitors. Theoretical results based on tight-binding and Lifshitz models agreed well with experimental observations of graphene containing a low concentration of resonant impurities. The interaction between resonant states and Landau levels was detected by varying the applied magnetic field. The interaction mechanisms and enhancement of the negative compressibility in disordered graphene are discussed.

Chen, X. L.; Wang, L.; Li, W.; Wang, Y.; He, Y. H.; Wu, Z. F.; Han, Y.; Zhang, M. W.; Xiong, W.; Wang, N. [Department of Physics and The William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China)] [Department of Physics and The William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (China)

2013-05-20T23:59:59.000Z

280

Benchmarking Compressed Sensing, Super-Resolution, and Filter Diagonalization  

E-Print Network [OSTI]

Signal processing techniques have been developed that use different strategies to bypass the Nyquist sampling theorem in order to recover more information than a traditional discrete Fourier transform. Here we examine three such methods: filter diagonalization, compressed sensing, and super-resolution. We apply them to a broad range of signal forms commonly found in science and engineering in order to discover when and how each method can be used most profitably. We find that filter diagonalization provides the best results for Lorentzian signals, while compressed sensing and super-resolution perform better for arbitrary signals.

Markovich, Thomas; Sanders, Jacob N; Aspuru-Guzik, Alan

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Homogeneous Charge Compression Ignition Free Piston Linear Alternator  

SciTech Connect (OSTI)

An experimental and theoretical investigation of a homogeneous charge compression ignition (HCCI) free piston powered linear alternator has been conducted to determine if improvements can be made in the thermal and conversion efficiencies of modern electrical generator systems. Performance of a free piston engine was investigated using a rapid compression expansion machine and a full cycle thermodynamic model. Linear alternator performance was investigated with a computer model. In addition linear alternator testing and permanent magnet characterization hardware were developed. The development of the two-stroke cycle scavenging process has begun.

Janson Wu; Nicholas Paradiso; Peter Van Blarigan; Scott Goldsborough

1998-11-01T23:59:59.000Z

282

Spatial compression algorithm for the analysis of very large multivariate images  

DOE Patents [OSTI]

A method for spatially compressing data sets enables the efficient analysis of very large multivariate images. The spatial compression algorithms use a wavelet transformation to map an image into a compressed image containing a smaller number of pixels that retain the original image's information content. Image analysis can then be performed on a compressed data matrix consisting of a reduced number of significant wavelet coefficients. Furthermore, a block algorithm can be used for performing common operations more efficiently. The spatial compression algorithms can be combined with spectral compression algorithms to provide further computational efficiencies.

Keenan, Michael R. (Albuquerque, NM)

2008-07-15T23:59:59.000Z

283

Exploring the concept of compressed air energy storage (CAES) in lined rock caverns at shallow depth: A modeling study of air tightness and energy balance  

E-Print Network [OSTI]

wind- diesel-compressed air energy storage system for remotestudy for the compressed air energy storage technology bydesign of compressed air energy storage electric power

Kim, H.-M.

2012-01-01T23:59:59.000Z

284

High-Order Entropy-Compressed Text Indexes  

E-Print Network [OSTI]

We present a novel implementation of compressed su~x arrays exhibiting new tradeoffs between search time and space occupancy for a given text (or sequence) of n symbols over an alphabet E, where each symbol is encoded by lg ]E I bits. We show...

Grossi, Roberto; Gupta, Ankur; Vitter, Jeffrey Scott

2003-01-01T23:59:59.000Z

285

POLARIZATION AND COMPRESSIBILITY OF OBLIQUE KINETIC ALFVEN WAVES  

SciTech Connect (OSTI)

It is well known that a complete description of the solar wind requires a kinetic description and that, particularly at sub-proton scales, kinetic effects cannot be ignored. It is nevertheless usually assumed that at scales significantly larger than the proton gyroscale r{sub L} , magnetohydrodynamics or its extensions, such as Hall-MHD and two-fluid models with isotropic pressures, provide a satisfactory description of the solar wind. Here we calculate the polarization and magnetic compressibility of oblique kinetic Alfven waves and show that, compared with linear kinetic theory, the isotropic two-fluid description is very compressible, with the largest discrepancy occurring at scales larger than the proton gyroscale. In contrast, introducing anisotropic pressure fluctuations with the usual double-adiabatic (or CGL) equations of state yields compressibility values which are unrealistically low. We also show that both of these classes of fluid models incorrectly describe the electric field polarization. To incorporate linear kinetic effects, we use two versions of the Landau fluid model that include linear Landau damping and finite Larmor radius (FLR) corrections. We show that Landau damping is crucial for correct modeling of magnetic compressibility, and that the anisotropy of pressure fluctuations should not be introduced without taking into account the Landau damping through appropriate heat flux equations. We also show that FLR corrections to all the retained fluid moments appear to be necessary to yield the correct polarization. We conclude that kinetic effects cannot be ignored even for kr{sub L} << 1.

Hunana, P.; Goldstein, M. L. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Passot, T.; Sulem, P. L.; Laveder, D. [Laboratoire J. L. Lagrange, Universite de Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, BP 4229, F-06304 Nice Cedex 4 (France)] [Laboratoire J. L. Lagrange, Universite de Nice Sophia Antipolis, CNRS, Observatoire de la Cote d'Azur, BP 4229, F-06304 Nice Cedex 4 (France); Zank, G. P. [Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 (United States)] [Center for Space Plasma and Aeronomic Research (CSPAR), University of Alabama in Huntsville, Huntsville, AL 35805 (United States)

2013-04-01T23:59:59.000Z

286

On optimally partitioning a text to improve its compression  

E-Print Network [OSTI]

In this paper we investigate the problem of partitioning an input string T in such a way that compressing individually its parts via a base-compressor C gets a compressed output that is shorter than applying C over the entire T at once. This problem was introduced in the context of table compression, and then further elaborated and extended to strings and trees. Unfortunately, the literature offers poor solutions: namely, we know either a cubic-time algorithm for computing the optimal partition based on dynamic programming, or few heuristics that do not guarantee any bounds on the efficacy of their computed partition, or algorithms that are efficient but work in some specific scenarios (such as the Burrows-Wheeler Transform) and achieve compression performance that might be worse than the optimal-partitioning by a $\\Omega(\\sqrt{\\log n})$ factor. Therefore, computing efficiently the optimal solution is still open. In this paper we provide the first algorithm which is guaranteed to compute in $O(n \\log_{1+\\eps}...

Ferragina, Paolo; Venturini, Rossano

2009-01-01T23:59:59.000Z

287

Direct Compressive Measurements of Individual Titanium Dioxide Nanotubes  

E-Print Network [OSTI]

Direct Compressive Measurements of Individual Titanium Dioxide Nanotubes Tolou Shokuhfar the syn- thesis of TiO2 nanotube arrays using an aqueous HF based electrolyte.5 The pH of F ion containing electrolytes was con- trolled to form nanotubes up to a few mi- crometers in length. They reported

Endres. William J.

288

STATUS OF THE NEUTRALIZED DRIFT COMPRESSION EXPERIMENT (NDCX-II)  

SciTech Connect (OSTI)

The Neutralized Drift Compression Experiment (NDCX-II) is an 11 M$ induction accelerator project currently in construction at Lawrence Berkeley National Laboratory for warm dense matter (WDM) experiments investigating the interaction of ion beams with matter at elevated temperature and pressure. The machine consists of a lithium injector, induction accelerator cells, diagnostic cells, a neutralized drift compression line, a final focus solenoid, and a target chamber. The induction cells and some of the pulsed power systems have been reused from the decommissioned Advanced Test Accelerator at Lawrence Livermore National Laboratory after refurbishment and modification. The machine relies on a sequence of acceleration waveforms to longitudinally compress the initial ion pulse from 600 ns to less than 1 ns in {approx} 12 m. Radial confinement of the beam is achieved with 2.5 T pulsed solenoids. In the initial hardware configuration, 50 nC of Li{sup +} will be accelerated to 1.25 MeV and allowed to drift-compress to a peak current of {approx}40 A. The project started in the summer of 2009. Construction of the accelerator will be completed in the fall of 2011 and will provide a worldwide unique opportunity for ion-driven warm dense matter experiments as well as research related to novel beam manipulations for heavy ion fusion drivers.

Waldron, W.L.; Kwan, J.W.

2011-04-21T23:59:59.000Z

289

Pellet Production Wood Pellets are made by compressing  

E-Print Network [OSTI]

Pellet Production Wood Pellets are made by compressing clean dry sawdust, under very high pressure into a pellet as it cools. The material used for producing pellets usually comes from industries who are already pellets reduces the volume of material they have to treat as waste, reducing landfill. Pellets have

290

Dynamic control of a homogeneous charge compression ignition engine  

DOE Patents [OSTI]

A homogenous charge compression ignition engine is operated by compressing a charge mixture of air, exhaust and fuel in a combustion chamber to an autoignition condition of the fuel. The engine may facilitate a transition from a first combination of speed and load to a second combination of speed and load by changing the charge mixture and compression ratio. This may be accomplished in a consecutive engine cycle by adjusting both a fuel injector control signal and a variable valve control signal away from a nominal variable valve control signal. Thereafter in one or more subsequent engine cycles, more sluggish adjustments are made to at least one of a geometric compression ratio control signal and an exhaust gas recirculation control signal to allow the variable valve control signal to be readjusted back toward its nominal variable valve control signal setting. By readjusting the variable valve control signal back toward its nominal setting, the engine will be ready for another transition to a new combination of engine speed and load.

Duffy, Kevin P. (Metamora, IL); Mehresh, Parag (Peoria, IL); Schuh, David (Peoria, IL); Kieser, Andrew J. (Morton, IL); Hergart, Carl-Anders (Peoria, IL); Hardy, William L. (Peoria, IL); Rodman, Anthony (Chillicothe, IL); Liechty, Michael P. (Chillicothe, IL)

2008-06-03T23:59:59.000Z

291

Energy Aware Lossless Data Compression Kenneth C. Barr  

E-Print Network [OSTI]

Energy Aware Lossless Data Compression by Kenneth C. Barr B.S.E. Computer Engineering University of Michigan, April 2000 Submitted to the Department of Electrical Engineering and Computer Science in partial at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY September 2002 c Massachusetts Institute of Technology 2002. All rights

292

Random Access Compressed Sensing over Fading and Noisy Communication Channels  

E-Print Network [OSTI]

of the climate change. Such applications require the least control and intervention as well as minimum energy1 Random Access Compressed Sensing over Fading and Noisy Communication Channels Fatemeh Fazel on integrating random sensing with the communication architecture, and achieves overall efficiency in terms

Stojanovic, Milica

293

Test Data Compression Using Dictionaries with Selective Entries  

E-Print Network [OSTI]

-based test data compression approach for reducing test data volume in SOCs. The proposed method is based and to drive a large number of internal scan chains in the circuit under test. Therefore, it is especially suitable for a reduced pin-count and low- cost DFT test environment, where a narrow interface between

Chakrabarty, Krishnendu

294

Compression of redundancy free trellis stages in Turbo-Decoder  

E-Print Network [OSTI]

Compression of redundancy free trellis stages in Turbo-Decoder E. Boutillon, J. SĂĄnchez-Rojas and C. Marchand For turbo code with coding rate close to one, the high puncturing rate induces long sequences. The computation is reduced accordingly. Introduction: Turbo codes with coding rate close to one are specified

Paris-Sud XI, Université de

295

POSTER PRESENTATION Open Access Compressed sensing with stochastic spikes  

E-Print Network [OSTI]

POSTER PRESENTATION Open Access Compressed sensing with stochastic spikes David Rotermund* , Klaus of a high dimensional state can be possible also from much lower dimensional sam- ples provided the state for non- negative activities can efficiently exploit the information contained in stochastic spike events

Kreiter, Andreas K.

296

COMPRESSION OF A PLASMA COLUMN OF INFINITE ELECTROCONDUCTIVITY SITUATED  

E-Print Network [OSTI]

45 COMPRESSION OF A PLASMA COLUMN OF INFINITE ELECTROCONDUCTIVITY SITUATED IN AN EXTERNAL AXIAL velocity, ion temperature, electron temperature and plasma density is analysed. The experimental results [1. Amongst the dissipative processes we are primarily concerned here with the electron heat conductivity

Boyer, Edmond

297

DIRECT SIMULATION OF SPATIALLY EVOLVING COMPRESSIBLE TURBULENT BOUNDARY LAYERS  

E-Print Network [OSTI]

of the cold wall condition used in Ref. 6, and, other differences. The computational method used in this study compressible flows because of the interest in designing high speed vehicles and the associated propulsion on temperature. Under the adiabatic conditions of the experiment, the temperature increases as the wall

Erlebacher, Gordon

298

Compression of Computer Graphics Images with Image-Based Rendering  

E-Print Network [OSTI]

Compression of Computer Graphics Images with Image-Based Rendering Ilmi Yoon and Ulrich Neumann information from previously rendered images. Images predicted from prior images are combined with a residual-based rendering tech- nique provides accurate motion prediction and accelerates rendering at the same time

Shahabi, Cyrus

299

NUMERICAL INVESTIGATION OF CAVITATION IN MULTI-DIMENSIONAL COMPRESSIBLE FLOWS  

E-Print Network [OSTI]

NUMERICAL INVESTIGATION OF CAVITATION IN MULTI-DIMENSIONAL COMPRESSIBLE FLOWS KRISTEN J. DEVAULT, cavitation, pseudospectral AMS subject classifications. 35Q30, 65M70, 76N99 1. Introduction. A long to first make a careful numerical study of the simplest possible scenario where one could expect cavitation

300

Ch. 15 Wavelet-Based Compression The Wavelet Transform  

E-Print Network [OSTI]

sent to describe allocations WT-BASED COMPRESSION EXAMPLE Time Frequency #12;42 From http://www.amara.com/IEEEwave/IW_fbi.html See also http://www.c3.lanl.gov/~brislawn/FBI/FBI.html Original Fingerprint Image Decoded Fingerprint

Fowler, Mark

Note: This page contains sample records for the topic "luc general compression" 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

Densities and Compressibilities of Chiral Molecules in the Liquid State  

E-Print Network [OSTI]

polarized light into circularly polarized light. #12;Objective · Measure the speed of sound in Limonene 1360 15 20 25 30 35 40 45 50 55 Speed of Sound (m/s) Temperature ( °C) Speed of Sound in LimoneneDensities and Compressibilities of Chiral Molecules in the Liquid State Imelda Hot and Dr. Amer S

Baltisberger, Jay H.

302

Improvements to the Block Sorting Text Compression Algorithm  

E-Print Network [OSTI]

that it is a context­based compressor of unbounded order, but those contexts are completely restructured by the sort that the requirements on the final compression stage are quite different from those in compressors of more conventional, eventually yielding a compressor which is among the best so far presented and is actually based

Fenwick, Peter

303

Experiments with a Block Sorting Text Compression Algorithm  

E-Print Network [OSTI]

compressors. The original paper did little more than present the algorithm, with strong advice for efficient on aspects of its operation. Consideration of the possible efficiency of text compression leads to the revival of ideas by Shannon as the basis of a text compressor and then to the classification of the Block

Fenwick, Peter

304

Compressive Strength of Gamma-Irradiated Polymer Concrete  

E-Print Network [OSTI]

Compressive Strength of Gamma-Irradiated Polymer Concrete Gonzalo MartiÂŽnez-Barrera,1,2 Uriel concrete (PC) was developed by using differ- ent concentrations of silica sand as aggregate of Plastics Engineers INTRODUCTION Polymer concrete (PC) is a particulate composite where thermoset resins

North Texas, University of

305

Novel Compression and Fueling Apparatus to Meet Hydrogen  

E-Print Network [OSTI]

compressor concept involving compression of hydrogen with a "liquid piston" with little temperature rise that are available commercially Cost increases, but cost per kg of delivered hydrogen decreases slightly 700 barg delivers 71% more hydrogen for a similar sized vehicle tank #12;8 Novel Compressor Targets: ­ Prototype

306

Generalized discoid lupus erythematosus  

E-Print Network [OSTI]

was diagnostic of discoid lupus erythematosus (DLE).A minority of patients with DLE progress to develop systemicalthough generalized DLE is more frequently associated with

2009-01-01T23:59:59.000Z

307

Maximum-Entropy Meshfree Method for Compressible and Near-Incompressible Elasticity  

SciTech Connect (OSTI)

Numerical integration errors and volumetric locking in the near-incompressible limit are two outstanding issues in Galerkin-based meshfree computations. In this paper, we present a modified Gaussian integration scheme on background cells for meshfree methods that alleviates errors in numerical integration and ensures patch test satisfaction to machine precision. Secondly, a locking-free small-strain elasticity formulation for meshfree methods is proposed, which draws on developments in assumed strain methods and nodal integration techniques. In this study, maximum-entropy basis functions are used; however, the generality of our approach permits the use of any meshfree approximation. Various benchmark problems in two-dimensional compressible and near-incompressible small strain elasticity are presented to demonstrate the accuracy and optimal convergence in the energy norm of the maximum-entropy meshfree formulation.

Ortiz, A; Puso, M A; Sukumar, N

2009-09-04T23:59:59.000Z

308

FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System...  

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

FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System Energy-Reduction Goals with a Three-Phased Strategy FUJIFILM Hunt Chemicals U.S.A. Achieves Compressed Air System...

309

Analysis of combustion in a small homogeneous charge compression assisted ignition engine  

E-Print Network [OSTI]

characteristics to homogeneous charge compression ignition (HCCI) engines. Difficulties such as unknown ignition.raine@auckland.ac.nz geneous charge compression ignition (HCCI) engines. JER03805 © IMechE 2006 Int. J. Engine Res. Vol. 7 #12

310

Extension of the high load limit in the Homogeneous Charge Compression Ignition engine  

E-Print Network [OSTI]

The Homogeneous Charge Compression Ignition (HCCI) engine offers diesel-like efficiency with very low soot and NOx emissions. In a HCCI engine, a premixed charge of air, fuel and burned gas is compressed to achieve ...

Scaringe, Robert J. (Robert Joseph)

2009-01-01T23:59:59.000Z

311

3D microstructure modeling of compressed fiber-based Gerd Gaiselmanna,  

E-Print Network [OSTI]

consideration of compression conditions as found in fuel cells. Given the input of a 3D microstructure of some compression states, an optimal vector field is estimated by simulated annealing. The model is applied to 3D im

Schmidt, Volker

312

Optical, electronic, and dynamical phenomena in the shock compression of condensed matter  

E-Print Network [OSTI]

Despite the study of shock wave compression of condensed matter for over 100 years, scant progress has been made in understanding the microscopic details. This thesis explores microscopic phenomena in shock compression of ...

Reed, Evan J. (Evan John), 1976-

2003-01-01T23:59:59.000Z

313

E-Print Network 3.0 - af compressed air Sample Search Results  

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

6 Page 1 of 8 2011-xx-xxxx Summary: Page 1 of 8 2011-xx-xxxx Improving Compressed Air Energy Efficiency in Automotive Plants Nasr... are typically large users of compressed...

314

EXTRACTION COMPRESSION AND ACCELERATION OF HIGH LINE CHARGE DENSITY ION BEAMS  

E-Print Network [OSTI]

on compression of heavy ion beams for creating high energyet al, “Highly Compressed Ion Beams for High Energy DensityPulsed Solenoid for Intense Ion Beam Transport,” these Proc:

Henestroza, E.

2008-01-01T23:59:59.000Z

315

Effects of electrode compression on the performance of a solid polymer electrolyte fuel cell  

E-Print Network [OSTI]

The effects of electrode compression on the performance of a polymer electrolyte fuel cell (PEFC) were investigated. Preliminary testing showed that considerable compression of the carbon cloth electrodes was provided by the PEFC structure. Further...

Del Campo, Christopher Scott

1997-01-01T23:59:59.000Z

316

1000 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 14, NO. 5, OCTOBER 2005 Incompressible and Compressible Flows Through  

E-Print Network [OSTI]

, discharge coefficient, in- compressible and compressible flows, microfluidics, microorifice, size effects. I. INTRODUCTION MICROFLUIDIC systems are becoming increasingly popular and finding widespread applications dispensing contraptions, DNA microarrays, genomics, microfluidic systems have recorded exponential growth

Peles, Yoav

317

RATE OF STRAIN TENSOR STATISTICS IN COMPRESSIBLE HOMOGENEOUS G. Erlebacher 1 , S. Sarkar 1  

E-Print Network [OSTI]

RATE OF STRAIN TENSOR STATISTICS IN COMPRESSIBLE HOMOGENEOUS TURBULENCE G. Erlebacher 1 , S. Sarkar was determined in Sarkar, Erlebacher and Hus­ saini (ref. 2) to be due to enhanced compressible dis­ sipation

Erlebacher, Gordon

318

The effects of plasticization and storage on quality of freeze-dried and compressed carrot bars  

E-Print Network [OSTI]

of this study were: To evaluate the effects of selected plasticizing methods on quality of stored freeze-dried compressed carrot cubes. To evaluate the effects of storage temperature on quality of freeze-dried compressed carrot cubes. To subjectively... carrots. than for those which had not been compressed before storage. Retention was much lower for compressed carrots packed in air compared to those packed in an inert gas or in vacuum (Hendel, 1973). Subjective Analysis Although taste panel...

Greaves, Donald William

1978-01-01T23:59:59.000Z

319

3D compression: from A to Zip: a first complete example THOMAS LEWINER  

E-Print Network [OSTI]

the design of compression schemes adapted to specific class of models. The recent launch of Google Sketch'up

Lewiner, Thomas (Thomas Lewiner)

320

Rate-Distortion-Optimized Predictive Compression of Dynamic 3D Mesh Sequences  

E-Print Network [OSTI]

on recent static mesh compression advances can be found in [2]. An important pre-condition for successful

Eisert, Peter

Note: This page contains sample records for the topic "luc general compression" 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

The lifetime of shape oscillations of a bubble in an unbounded, inviscid and compressible fluid with surface tension  

E-Print Network [OSTI]

General perturbations of a spherical gas bubble in a compressible and inviscid fluid with surface tension were proved in Shapiro and Weinstein (2011), in the linearized approximation, to decay exponentially, $\\sim e^{-\\Gamma t}, \\Gamma>0$, as time advances. Formal asymptotic and numerical evidence led to the conjecture that $\\Gamma \\approx \\frac{A}{\\epsilon} \\frac{We}{\\epsilon^{2}} \\exp(-B \\frac{We}{\\epsilon^2})$, where $0<\\epsilon\\ll1$ is the Mach number, We is the Weber number, and $A$ and $B$ are positive constants. In this paper, we prove this conjecture and calculate $A$ and $B$ to leading order in $\\epsilon$.

Ovidiu Costin; Saleh Tanveer; Michael I. Weinstein

2012-10-01T23:59:59.000Z

322

MULTISCALE RANDOM PROJECTIONS FOR COMPRESSIVE CLASSIFICATION Marco F. Duarte,r  

E-Print Network [OSTI]

of sam- pling and compression [1, 2]. CS enables the design of new kinds of compressive imaging systems ratio test; in the case of image classification, it exploits the fact that a set of images of a fixed- quires compressive image projections, we achieve high clas- sification rates using many fewer

323

ME 360L Compressible Flow and Turbomachinery ABET EC2000 syllabus  

E-Print Network [OSTI]

ME 360L ­ Compressible Flow and Turbomachinery Page 1 ABET EC2000 syllabus ME 360L ­ Compressible Flow and Turbomachinery Fall 2009 Required or Elective: Elective 2008-2010 Catalog Data: Positive Assignments: None #12;ME 360L ­ Compressible Flow and Turbomachinery Page 2 ABET EC2000 syllabus Laboratory

Ben-Yakar, Adela

324

Planning and Installation Guide: North Carolina Compressed Natural Gas Fueling Stations  

E-Print Network [OSTI]

1 Planning and Installation Guide: North Carolina Compressed Natural Gas Fueling Stations Introduction Are you considering installing a compressed natural gas (CNG) fueling station for your fleet to provide your fleet with fuel. One resource for locating and identifying public compressed natural gas

325

A Low-power, Low-memory System for Wavelet-based Image Compression  

E-Print Network [OSTI]

of the components of our particular method of wavelet transform based image compression. 2 Wavelet transformsA Low-power, Low-memory System for Wavelet-based Image Compression James S. Walker Department the following advan- tages: low-power utilization, low RAM requirements, embedded bit-plane compression, scal

Walker, James S.

326

Extracting Constitutive Stress-Strain Behavior of Microscopic Phases by Micropillar Compression  

SciTech Connect (OSTI)

The manuscript describes how micropillar compression technique can be used to perform uniaxial compression tests within individual grains so as to generate local-scale constitutive behavior which, otherwise cannot be ascertained from the conventional macroscale compression test techniques. The manuscript uses steel and magnesium alloys as an example. A portion of the magnesium work was performed at PNNL.

Williams, J. J.; Walters, Jennifer; Wang, Mingyue; Chawla, N.; Rohatgi, Aashish

2013-02-01T23:59:59.000Z

327

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES  

E-Print Network [OSTI]

COMPRESSED-AIR ENERGY STORAGE SYSTEMS FOR STAND-ALONE OFF-GRID PHOTOVOLTAIC MODULES Dominique materials, flywheels, pumped hydro (PH), superconducting magnetic energy storage (SMES) and compressed air-grid alternative to the large-scale compressed air energy storage systems we propose to examine the viability

Deymier, Pierre

328

DRAFT: NONLINEAR CONTROLLER DESIGN WITH BANDWIDTH CONSIDERATION FOR A NOVEL COMPRESSED AIR ENERGY STORAGE SYSTEM  

E-Print Network [OSTI]

regulation and gen- erator power tracking for a Compressed Air Energy Storage (CAES) system, a nonlinearDRAFT: NONLINEAR CONTROLLER DESIGN WITH BANDWIDTH CONSIDERATION FOR A NOVEL COMPRESSED AIR ENERGY available wind power in normal situations. Storing energy in high pressure compressed air is attractive

Li, Perry Y.

329

OPTIMAL CONTROL EXPERIMENTATION OF COMPRESSION TRAJECTORIES FOR A LIQUID PISTON AIR COMPRESSOR  

E-Print Network [OSTI]

compressor is the critical part of a Compressed Air En- ergy Storage (CAES) system. Efficient and fast and expansion has many applications in pneumatic and hydraulic systems, including in the Compressed Air Energy CAES system, high pressure (20-30MPa) compressed air is stored in a dual chamber storage vessel

Li, Perry Y.

330

Fractal Volume Compression Wayne O. Cochran John C. Hart Patrick J. Flynn  

E-Print Network [OSTI]

Fractal Volume Compression Wayne O. Cochran John C. Hart Patrick J. Flynn School of Electrical@eecs.wsu.edu October 18, 1995 Abstract This research is the rst application of fractal compression to volumetric data. The various components of the fractal image compression method extend simply and di- rectly to the volumetric

331

Partial Encryption of Compressed Images and Videos \\Lambda Howard Cheng y and Xiaobo Li z  

E-Print Network [OSTI]

Partial Encryption of Compressed Images and Videos \\Lambda Howard Cheng y and Xiaobo Li z, if not impossible, to carry out real­time secure image and video communication and processing. Methods have been of the compressed data. Partial encryption is applied to several image and video compression algorithms

Cheng, Howard

332

DIRECT NUMERICAL SIMULATION OF COMPRESSIBLE TRANSITION: AN OVERVIEW M.Y. Hussaini and G. Erlebacher  

E-Print Network [OSTI]

DIRECT NUMERICAL SIMULATION OF COMPRESSIBLE TRANSITION: AN OVERVIEW M.Y. Hussaini and G. Erlebacher in the field of compressible transition. As a result, new computational tools have made their appearance. Recently however, research at Langley has begun to focus on the simulation of compressible transition

Erlebacher, Gordon

333

Wavelet Compression of ECG Signals by JPEG2000 Ali Bilgin1  

E-Print Network [OSTI]

Wavelet Compression of ECG Signals by JPEG2000 Ali Bilgin1 , Michael W. Marcellin1 , and Maria I codec can be used to compress electrocardiogram (ECG) data. Experiments using the MIT-BIH arrhythmia database illustrate that the proposed approach outperforms many existing ECG compression schemes

Bilgin, Ali

334

Generalized Galilean Genesis  

E-Print Network [OSTI]

The galilean genesis scenario is an alternative to inflation in which the universe starts expanding from Minkowski in the asymptotic past by violating the null energy condition stably. Several concrete models of galilean genesis have been constructed so far within the context of galileon-type scalar-field theories. We give a generic, unified description of the galilean genesis scenario in terms of the Horndeski theory, i.e., the most general scalar-tensor theory with second-order field equations. In doing so we generalize the previous models to have a new parameter (denoted by {\\alpha}) which results in controlling the evolution of the Hubble rate. The background dynamics is investigated to show that the generalized galilean genesis solution is an attractor, similarly to the original model. We also study the nature of primordial perturbations in the generalized galilean genesis scenario. In all the models described by our generalized genesis Lagrangian, amplification of tensor perturbations does not occur as ...

Nishi, Sakine

2015-01-01T23:59:59.000Z

335

Image compression/decompression based on mathematical transform, reduction/expansion, and image sharpening  

DOE Patents [OSTI]

An image represented in a first image array of pixels is first decimated in two dimensions before being compressed by a predefined compression algorithm such as JPEG. Another possible predefined compression algorithm can involve a wavelet technique. The compressed, reduced image is then transmitted over the limited bandwidth transmission medium, and the transmitted image is decompressed using an algorithm which is an inverse of the predefined compression algorithm (such as reverse JPEG). The decompressed, reduced image is then interpolated back to its original array size. Edges (contours) in the image are then sharpened to enhance the perceptual quality of the reconstructed image. Specific sharpening techniques are described. 22 figs.

Fu, C.Y.; Petrich, L.I.

1997-12-30T23:59:59.000Z

336

Construction of Generalized Connections  

E-Print Network [OSTI]

We present a construction method for mappings between generalized connections, comprising, e.g., the action of gauge transformations, diffeomorphisms and Weyl transformations. Moreover, criteria for continuity and measure preservation are stated.

Christian Fleischhack

2006-01-02T23:59:59.000Z

337

General relativity and experiment  

E-Print Network [OSTI]

The confrontation between Einstein's theory of gravitation and experiment is summarized. Although all current experimental data are compatible with general relativity, the importance of pursuing the quest for possible deviations from Einstein's theory is emphasized.

T. Damour

1994-12-08T23:59:59.000Z

338

Shock compression experiments on Lithium Deuteride single crystals.  

SciTech Connect (OSTI)

S hock compression exper iments in the few hundred GPa (multi - Mabr) regime were performed on Lithium Deuteride (LiD) single crystals . This study utilized the high velocity flyer plate capability of the Sandia Z Machine to perform impact experiments at flyer plate velocities in the range of 17 - 32 km/s. Measurements included pressure, density, and temperature between ~200 - 600 GPa along the Principal Hugoniot - the locus of end states achievable through compression by large amplitude shock waves - as well as pressure and density of re - shock states up to ~900 GPa . The experimental measurements are compared with recent density functional theory calculations as well as a new tabular equation of state developed at Los Alamos National Labs.

Knudson, Marcus D.; Desjarlais, Michael P.; Lemke, Raymond W.

2014-10-01T23:59:59.000Z

339

Proton radiography of a shock-compressed target  

SciTech Connect (OSTI)

In this paper we report on the radiography of a shock-compressed target using laser produced proton beams. A low-density carbon foam target was shock compressed by long pulse high-energy laser beams. The shock front was transversally probed with a proton beam produced in the interaction of a high intensity laser beam with a gold foil. We show that from radiography data, the density profile in the shocked target can be deduced using Monte Carlo simulations. By changing the delay between long and short pulse beams, we could probe different plasma conditions and structures, demonstrating that the details of the steep density gradient can be resolved. This technique is validated as a diagnostic for the investigation of warm dense plasmas, allowing an in situ characterization of high-density contrasted plasmas.

Ravasio, A.; Benuzzi-Mounaix, A.; Loupias, B.; Ozaki, N.; Vinci, T.; Koenig, M. [Laboratoire pour l'Utilisation des Lasers Intenses, UMR 7605, CNRS-CEA-Universite Paris VI-Ecole Polytechnique, 91128 Palaiseau Cedex (France); Romagnani, L.; Cecchetti, C.; Borghesi, M. [School of Mathematics and Physics, The Queen's University of Belfast, Belfast BT7 INN (United Kingdom); Le Pape, S.; Hicks, D.; MacKinnon, A.; Park, H. S.; Patel, P. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States); Batani, D.; Dezulian, R. [Dipartimento di Fisica G. Occhialini, Universita di Milano-Bicocca, Piazza Della Scienze 3, 20126 Milano (Italy); Boehly, T. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Gremillet, L.; Henry, E. [CEA, DAM, DIF, F-91297 Arpajon Cedex (France); Schiavi, A. [Department of Energetics, University of Rome 'La Sapienza' Rome (Italy)

2010-07-15T23:59:59.000Z

340

Frequency shift measurement in shock-compressed materials  

DOE Patents [OSTI]

A method is disclosed for determining molecular vibrational frequencies in shock-compressed transparent materials. A single laser beam pulse is directed into a sample material while the material is shock-compressed from a direction opposite that of the incident laser beam. A Stokes beam produced by stimulated Raman scattering is emitted back along the path of the incident laser beam, that is, in the opposite direction to that of the incident laser beam. The Stokes beam is separated from the incident beam and its frequency measured. The difference in frequency between the Stokes beam and the incident beam is representative of the characteristic frequency of the Raman active mode of the sample. Both the incident beam and the Stokes beam pass perpendicularly through the stock front advancing through the sample, thereby minimizing adverse effects of refraction.

Moore, D.S.; Schmidt, S.C.

1984-02-21T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Ultrafast electron diffraction with radio-frequency compressed electron pulses  

SciTech Connect (OSTI)

We report on the complete characterization of time resolution in an ultrafast electron diffraction (UED) instrument based on radio-frequency electron pulse compression. The temporal impulse response function of the instrument was determined directly in pump-probe geometry by performing electron-laser pulse cross-correlation measurements using the ponderomotive interaction. With optimal settings, a stable impulse response of 334{+-}10 fs was measured at a bunch charge of 0.1 pC (6.24 Multiplication-Sign 10{sup 5} electrons/pulse); a dramatic improvement compared to performance without pulse compression. Phase stability currently limits the impulse response of the UED diffractometer to the range of 334-500 fs, for bunch charges ranging between 0.1 and 0.6 pC.

Chatelain, Robert P.; Morrison, Vance R.; Godbout, Chris; Siwick, Bradley J. [Departments of Physics and Chemistry, Center for the Physics of Materials, McGill University, Montreal (Canada)

2012-08-20T23:59:59.000Z

342

Generalized Fusion Potentials  

E-Print Network [OSTI]

Recently, DiFrancesco and Zuber have characterized the RCFTs which have a description in terms of a fusion potential in one variable, and proposed a generalized potential to describe other theories. In this note we give a simple criterion to determine when such a generalized description is possible. We also determine which RCFTs can be described by a fusion potential in more than one variable, finding that in fact all RCFTs can be described in such a way, as conjectured by Gepner.

Ofer Aharony

1993-01-31T23:59:59.000Z

343

Generalized Concatenated Quantum Codes  

E-Print Network [OSTI]

We introduce the concept of generalized concatenated quantum codes. This generalized concatenation method provides a systematical way for constructing good quantum codes, both stabilizer codes and nonadditive codes. Using this method, we construct families of new single-error-correcting nonadditive quantum codes, in both binary and nonbinary cases, which not only outperform any stabilizer codes for finite block length, but also asymptotically achieve the quantum Hamming bound for large block length.

Markus Grassl; Peter Shor; Graeme Smith; John Smolin; Bei Zeng

2009-01-09T23:59:59.000Z

344

Shock compression of liquid helium to 56 GPa (560 kbar)  

SciTech Connect (OSTI)

The first shock-compression experiments on liquid helium are reported. With a two-stage light-gas gun, liquid He at 4.3 K and 1 atm was shocked to 16 GPa and 12 000 K and double shocked to 56 GPa and 21 000 K. Liquid perturbation theory has been used to determine an effective interatomic potential from which the equation of state of He can be obtained over a wide range of densities and temperatures.

Nellis, W.J.; Holmes, N.C.; Mitchell, A.C.; Trainor, R.J.; Governo, G.K.; Ross, M.; Young, D.A.

1984-09-24T23:59:59.000Z

345

Application of energy release rate principles to compression debonding  

E-Print Network [OSTI]

analyzed. An experimental program employing a polymethylmethacrylate (PMMA) model system was conducted to verify the proposed analytical technique. The model system consisted of a symmetrical beam-column arrangement subjected simultaneously to axial... to axial compressive P and synusetrical side loads P as illustrated in a s Figure 4b. PMMA was selected as the model system material for this investi- gation because it is a clear glassy thermoplastic which enables one to record debond propagation as a...

Poniktera, Christopher Dale

1980-01-01T23:59:59.000Z

346

Costs Associated With Compressed Natural Gas Vehicle Fueling Infrastructure  

SciTech Connect (OSTI)

This document is designed to help fleets understand the cost factors associated with fueling infrastructure for compressed natural gas (CNG) vehicles. It provides estimated cost ranges for various sizes and types of CNG fueling stations and an overview of factors that contribute to the total cost of an installed station. The information presented is based on input from professionals in the natural gas industry who design, sell equipment for, and/or own and operate CNG stations.

Smith, M.; Gonzales, J.

2014-09-01T23:59:59.000Z

347

Combustion engine variable compression ratio apparatus and method  

DOE Patents [OSTI]

An apparatus and method for varying a compression ratio of an engine having a block and a head mounted thereto. The apparatus and method includes a cylinder having a block portion and a head portion, a piston linearly movable in the block portion of the cylinder, a cylinder plug linearly movable in the head portion of the cylinder, and a valve located in the cylinder plug and operable to provide controlled fluid communication with the block portion of the cylinder.

Lawrence; Keith E. (Peoria, IL); Strawbridge, Bryan E. (Dunlap, IL); Dutart, Charles H. (Washington, IL)

2006-06-06T23:59:59.000Z

348

Active high-power RF switch and pulse compression system  

DOE Patents [OSTI]

A high-power RF switching device employs a semiconductor wafer positioned in the third port of a three-port RF device. A controllable source of directed energy, such as a suitable laser or electron beam, is aimed at the semiconductor material. When the source is turned on, the energy incident on the wafer induces an electron-hole plasma layer on the wafer, changing the wafer's dielectric constant, turning the third port into a termination for incident RF signals, and. causing all incident RF signals to be reflected from the surface of the wafer. The propagation constant of RF signals through port 3, therefore, can be changed by controlling the beam. By making the RF coupling to the third port as small as necessary, one can reduce the peak electric field on the unexcited silicon surface for any level of input power from port 1, thereby reducing risk of damaging the wafer by RF with high peak power. The switch is useful to the construction of an improved pulse compression system to boost the peak power of microwave tubes driving linear accelerators. In this application, the high-power RF switch is placed at the coupling iris between the charging waveguide and the resonant storage line of a pulse compression system. This optically controlled high power RF pulse compression system can handle hundreds of Megawatts of power at X-band.

Tantawi, Sami G. (San Mateo, CA); Ruth, Ronald D. (Woodside, CA); Zolotorev, Max (Mountain View, CA)

1998-01-01T23:59:59.000Z

349

Shockless compression and release behavior of beryllium to 110?GPa  

SciTech Connect (OSTI)

A magnetohydrodynamic loading technique was used to shocklessly compress beryllium to peak longitudinal stresses of 19–110?GPa and, subsequently, unload in order to determine both the compressive response and also the shear stress supported upon release. Loading strain rates were on the order of 10{sup 6?}s{sup ?1}, while the unloading rates were nearly constant at 3?Ś?10{sup 5?}s{sup ?1}. Velocimetry was used to monitor the ramp and release behavior of a beryllium/lithium fluoride window interface. After applying window corrections to infer in situ beryllium velocities, a Lagrangian analysis was employed to determine the material response. The Lagrangian wavespeed-particle velocity response is integrated to generate the stress-strain path, average change in shear stress over the elastic unloading, and estimates of the shear modulus at peak compression. These data are used to infer the pressure dependence of the flow strength at the unloading rate. Comparisons to several strength models reveal good agreement to 45?GPa, but the data indicate 20%–30% higher strength near 100?GPa.

Brown, J. L.; Knudson, M. D.; Alexander, C. S.; Asay, J. R. [Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

2014-07-21T23:59:59.000Z

350

V. Havran & J. Filip & K. Myszkowski / Bidirectional Texture Function Compression Based on Multi-Level Vector Quantization Bidirectional Texture Function Compression Based on  

E-Print Network [OSTI]

and illumination dependent texels into a set of multidimensional conditional probability density functionsV. Havran & J. Filip & K. Myszkowski / Bidirectional Texture Function Compression Based on Multi-Level Vector Quantization Bidirectional Texture Function Compression Based on Multi-Level Vector Quantization V

Havran, Vlastimil

351

Combustion in Homogeneous Charge Compression Ignition Engines: Experiments and Detailed Chemical Kinetic Simulations  

SciTech Connect (OSTI)

Homogeneous charge compression ignition (HCCI) engines are being considered as an alternative to diesel engines. The HCCI concept involves premixing fuel and air prior to induction into the cylinder (as is done in current spark-ignition engine) then igniting the fuel-air mixture through the compression process (as is done in current diesel engines). The combustion occurring in an HCCI engine is fundamentally different from a spark-ignition or Diesel engine in that the heat release occurs as a global autoignition process, as opposed to the turbulent flame propagation or mixing controlled combustion used in current engines. The advantage of this global autoignition is that the temperatures within the cylinder are uniformly low, yielding very low emissions of oxides of nitrogen (NO{sub x}, the chief precursors to photochemical smog). The inherent features of HCCI combustion allows for design of engines with efficiency comparable to, or potentially higher than, diesel engines. While HCCI engines have great potential, several technical barriers exist which currently prevent widespread commercialization of this technology. The most significant challenge is that the combustion timing cannot be controlled by typical in-cylinder means. Means of controlling combustion have been demonstrated, but a robust control methodology that is applicable to the entire range of operation has yet to be developed. This research focuses on understanding basic characteristics of controlling and operating HCCI engines. Experiments and detailed chemical kinetic simulations have been applied to the characterize some of the fundamental operational and design characteristics of HCCI engines. Experiments have been conducted on single and multi-cylinder engines to investigate general features of how combustion timing affects the performance and emissions of HCCI engines. Single-zone modeling has been used to characterize and compare the implementation of different control strategies. Multi-zone modeling has been applied to investigate combustion chamber design with respect to increasing efficiency and reducing emissions in HCCI engines.

Flowers, D L

2002-06-07T23:59:59.000Z

352

8Be General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables The General

353

8C General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables The GeneralCC

354

9B General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables8 2BB General

355

9Be General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables8 2BBBe General

356

Generalized coherent states  

E-Print Network [OSTI]

In the coherent state of the harmonic oscillator, the probability density is that of the ground state subjected to an oscillation along a classical trajectory. Senitzky and others pointed out that there are states of the harmonic oscillator corresponding to an identical oscillatory displacement of the probability density of any energy eigenstate. These generalizations of the coherent state are rarely discussed, yet they furnish an interesting set of quantum states of light that combine features of number states and coherent states. Here we give an elementary account of the quantum optics of generalized coherent states.

T. G. Philbin

2013-12-18T23:59:59.000Z

357

Generalization of Conformal Transformations  

E-Print Network [OSTI]

Conformal transformations of a Euclidean (complex) plane have some kind of completeness (sufficiency) for the solution of many mathematical and physical-mathematical problems formulated on this plane. There is no such completeness in the case of Euclidean, pseudo-Euclidean and polynumber spaces of dimension greater than two. In the present paper we show that using the concepts of analogical geometries allows us to generalize conformal transformations not only to the case of Euclidean or pseudo-Euclidean spaces, but also to the case of Finsler spaces, analogous to the spaces of affine connectedness. Examples of such transformations in the case of complex and hypercomplex numbers H_4 are presented. In the general case such transformations form a group of transitions, the elements of which can be viewed as transitions between projective Euclidean geometries of a distinguished class fixed by the choice of metric geometry admitting affine coordinates. The correlation between functions realizing generalized conformal transformations and generalized analytical functions can appear to be productive for the solution of fundamental problems in theoretical and mathematical physics.

G. I. Garas'ko

2005-09-19T23:59:59.000Z

358

DRILLING MACHINES GENERAL INFORMATION  

E-Print Network [OSTI]

TC 9-524 Chapter 4 DRILLING MACHINES GENERAL INFORMATION PURPOSE This chapter contains basic information pertaining to drilling machines. A drilling machine comes in many shapes and sizes, from small hand-held power drills to bench mounted and finally floor-mounted models. They can perform operations

Gellman, Andrew J.

359

Communication Definitions... general definition  

E-Print Network [OSTI]

Communication Definitions... general definition "the process of conveying information from a sender to a receiver with the use of a medium in which the communicated information is understood the same way by both sender and receiver" (Wikipedia)! Biological communication Action by one organism (individual

Jones, Ian L.

360

TABLE VENDOR General Information  

E-Print Network [OSTI]

TABLE VENDOR General Information The following are the terms and conditions for renting table Affairs. York University assumes no responsibility or liability for vendors and their agent including racks provided by the vendor are charged at the rate of $25.00 per day per additional display. All

Note: This page contains sample records for the topic "luc general compression" 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

General Syllabus Physics 45100  

E-Print Network [OSTI]

General Syllabus Physics 45100 Thermodynamics and Statistical Physics Designation: Undergraduate Catalog description: 45100: Thermodynamics and Statistical Physics Temperature; equation of state; work and statistical mechanics; low-temperature physics; the Third Law. 3 HR./Wk.; 3 CR. Prerequisites: Physics 35100

Lombardi, John R.

362

GENERAL CIRCULATION Energy Cycle  

E-Print Network [OSTI]

process. PE is useful for global energy balance. Solar radiant energy does not reach the Earth equally everywhere. On average, the tropics receive and absorb far more solar energy annually than the polar regionsGENERAL CIRCULATION Contents Energy Cycle Mean Characteristics Momentum Budget Overview Energy

Grotjahn, Richard

363

General com Technology community  

E-Print Network [OSTI]

Campus IT General com m unity Technology community ITsystem owners Campus Council for Information Technology (CCFIT) · ~30 members · Advisory evaluation and review role · Input from faculty, staff, students formal representation on steering team and subcommittees Technology Support Program · Technology support

Ferrara, Katherine W.

364

Optimization Under Generalized Uncertainty  

E-Print Network [OSTI]

11 Optimization Under Generalized Uncertainty Optimization Modeling Math 4794/5794: Spring 2013 Weldon A. Lodwick Weldon.Lodwick@ucdenver.edu 2/14/2013 Optimization Modeling - Spring 2013 #12 in the context of optimization problems. The theoretical frame-work for these notes is interval analysis. From

Lodwick, Weldon

365

Singular Value Decomposition Generalized  

E-Print Network [OSTI]

1 Overview The singular value decomposition (SVD) is a generalization of the eigen- ferent eigenvalues are pairwise orthogonal. Let X be a positive semi-definite, its eigen containing the eigenvalues of X. The SVD uses the eigen-decomposition of a positive semi-definite matrix

Abdi, Hervé

366

Reversible compression of an optical piston through Kramers dynamics  

E-Print Network [OSTI]

We study the reversible crossover between stable and bistable phases of an over-damped Brownian bead inside an optical piston. The interaction potentials are solved developing a method based on Kramers' theory that exploits the statistical properties of the stochastic motion of the bead. We evaluate precisely the energy balance of the crossover. We show that the deformation of the optical potentials induced by the compression of the piston is related to a production of heat which measures the non-adiabatic character of the crossover. This reveals how specific thermodynamic processes can be designed and controlled with a high level of precision by tailoring the optical landscapes of the piston.

Schnoering, Gabriel

2015-01-01T23:59:59.000Z

367

Coherent structures in compressible free-shear-layer flows  

SciTech Connect (OSTI)

Large scale coherent structures are intrinsic fluid mechanical characteristics of all free-shear flows, from incompressible to compressible, and laminar to fully turbulent. These quasi-periodic fluid structures, eddies of size comparable to the thickness of the shear layer, dominate the mixing process at the free-shear interface. As a result, large scale coherent structures greatly influence the operation and efficiency of many important commercial and defense technologies. Large scale coherent structures have been studied here in a research program that combines a synergistic blend of experiment, direct numerical simulation, and analysis. This report summarizes the work completed for this Sandia Laboratory-Directed Research and Development (LDRD) project.

Aeschliman, D.P.; Baty, R.S. [Sandia National Labs., Albuquerque, NM (United States). Engineering Sciences Center; Kennedy, C.A.; Chen, J.H. [Sandia National Labs., Livermore, CA (United States). Combustion and Physical Sciences Center

1997-08-01T23:59:59.000Z

368

Compressed air energy storage technology program. Annual report for 1980  

SciTech Connect (OSTI)

All of the major research funded under the Compressed Air Energy Storage Technology Program during the period March 1980 to March 1981 is described. This annual report is divided into two segments: Reservoir Stability Studies and Second-Generation Concepts Studies. The first represents research performed to establish stability criteria for CAES reservoirs while the second reports progress on research performed on second-generation CAES concepts. The report consists of project reports authored by research engineers and scientists from PNL and numerous subcontractors including universities, architect-engineering, and other private firms.

Kannberg, L.D.

1981-06-01T23:59:59.000Z

369

Real time electrocardiographic data compression using Walsh functions  

E-Print Network [OSTI]

been used by pre- vious investigators for data compression are Fourier, Haar, Discrete Cosine, Karhunen-Loe've (6) and Welsh (7). These transformations can be calculated by equation 2 which has approximately N operations. The Cooley-Tukey algorithm... (8) is much faster to compute having only NeLog2(N) operations and can be used on the Fourier, Haar, and Welsh transformations. The Fourier transform uses the set of exponental functions defined by the Fourier series as the orthogonal basis. Un...

Jank, Philip Charles

1982-01-01T23:59:59.000Z

370

Controlling And Operating Homogeneous Charge Compression Ignition (Hcci) Engines  

DOE Patents [OSTI]

A Homogeneous Charge Compression Ignition (HCCI) engine system includes an engine that produces exhaust gas. A vaporization means vaporizes fuel for the engine an air induction means provides air for the engine. An exhaust gas recirculation means recirculates the exhaust gas. A blending means blends the vaporized fuel, the exhaust gas, and the air. An induction means inducts the blended vaporized fuel, exhaust gas, and air into the engine. A control means controls the blending of the vaporized fuel, the exhaust gas, and the air and for controls the inducting the blended vaporized fuel, exhaust gas, and air into the engine.

Flowers, Daniel L. (San Leandro, CA)

2005-08-02T23:59:59.000Z

371

Wave motions in unbounded poroelastic solids infused with compressible fluids  

E-Print Network [OSTI]

Looking at rational solid-fluid mixture theories in the context of their biomechanical perspectives, this work aims at proposing a two-scale constitutive theory of a poroelastic solid infused with an inviscid compressible fluid. The propagation of steady-state harmonic plane waves in unbounded media is investigated in both cases of unconstrained solid-fluid mixtures and fluid-saturated poroelastic solids. Relevant effects on the resulting characteristic speed of longitudinal and transverse elastic waves, due to the constitutive parameters introduced, are finally highlighted and discussed.

Quiligotti, S; dell'Isola, F

2010-01-01T23:59:59.000Z

372

Simulation study of two-stroke cycle compression ignition engines  

E-Print Network [OSTI]

An analytical model of a &wo-strok& rycl&, r?iprocating, compression-ignition engine fueled with either diesel fuel or dry par&i& le coal fuel was developed to simulate three different two-stroke &. y& l?ngines (similar to three commercial engines.... The submodels developed were for the & I lind& r gas propert irs and for & agin& processes such as combustion, heat transfer. intake and exhaust How, scavenging and work. Diesel combustion was simulated hy?sing a correlation to rno&lel the total heat release...

Kishan, Sandeep

1985-01-01T23:59:59.000Z

373

A correlation of rock compressibility with temperature and pressure  

E-Print Network [OSTI]

reservoir rocks to higher temperatures. Tests were conducted on 17 specimens cut from 5 sandstone cores and 0 4 specimens cut from one limestone core at temperatures of 76 F, 0 0 0 200 F, 300 F, and 400 F and at pressures ranging from 100-14, 000 0 psi.... The net change in 0 0 pore volume from 100-14, 000 psi ranges between 4. 0 /o and 9. 6 /o 0 0 at room temperature and 5. 1 ? 14. 1 /o at 400 F. A definite trend was established between pore volume compressibility and porosity of the specimens tested...

Choudhary, Bijoy Kumar

1967-01-01T23:59:59.000Z

374

Exhaust gas recirculation in a homogeneous charge compression ignition engine  

DOE Patents [OSTI]

A homogeneous charge compression ignition engine operates by injecting liquid fuel directly in a combustion chamber, and mixing the fuel with recirculated exhaust and fresh air through an auto ignition condition of the fuel. The engine includes at least one turbocharger for extracting energy from the engine exhaust and using that energy to boost intake pressure of recirculated exhaust gas and fresh air. Elevated proportions of exhaust gas recirculated to the engine are attained by throttling the fresh air inlet supply. These elevated exhaust gas recirculation rates allow the HCCI engine to be operated at higher speeds and loads rendering the HCCI engine a more viable alternative to a conventional diesel engine.

Duffy, Kevin P. (Metamora, IL); Kieser, Andrew J. (Morton, IL); Rodman, Anthony (Chillicothe, IL); Liechty, Michael P. (Chillicothe, IL); Hergart, Carl-Anders (Peoria, IL); Hardy, William L. (Peoria, IL)

2008-05-27T23:59:59.000Z

375

Compressed Natural Gas and Hydrogen Fuels Workshop | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartment ofCarrieofPropertyEnergyWorkshopCompressed Natural Gas and

376

Compressed/Liquid Hydrogen Tanks | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in Review: Top FiveDepartment ofCarrieofPropertyEnergyWorkshopCompressed Natural Gas

377

Generalized constructive tree weights  

SciTech Connect (OSTI)

The Loop Vertex Expansion (LVE) is a quantum field theory (QFT) method which explicitly computes the Borel sum of Feynman perturbation series. This LVE relies in a crucial way on symmetric tree weights which define a measure on the set of spanning trees of any connected graph. In this paper we generalize this method by defining new tree weights. They depend on the choice of a partition of a set of vertices of the graph, and when the partition is non-trivial, they are no longer symmetric under permutation of vertices. Nevertheless we prove they have the required positivity property to lead to a convergent LVE; in fact we formulate this positivity property precisely for the first time. Our generalized tree weights are inspired by the Brydges-Battle-Federbush work on cluster expansions and could be particularly suited to the computation of connected functions in QFT. Several concrete examples are explicitly given.

Rivasseau, Vincent, E-mail: vincent.rivasseau@th.u-psud.fr, E-mail: adrian.tanasa@ens-lyon.org [LPT, CNRS UMR 8627, Univ. Paris 11, 91405 Orsay Cedex, France and Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Ontario N2L 2Y5, Waterloo (Canada)] [LPT, CNRS UMR 8627, Univ. Paris 11, 91405 Orsay Cedex, France and Perimeter Institute for Theoretical Physics, 31 Caroline St. N, Ontario N2L 2Y5, Waterloo (Canada); Tanasa, Adrian, E-mail: vincent.rivasseau@th.u-psud.fr, E-mail: adrian.tanasa@ens-lyon.org [Université Paris 13, Sorbonne Paris Cité, 99, Avenue Jean-Baptiste Clément LIPN, Institut Galilée, CNRS UMR 7030, F-93430 Villetaneuse, France and Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O.B. MG-6, 077125 Magurele (Romania)] [Université Paris 13, Sorbonne Paris Cité, 99, Avenue Jean-Baptiste Clément LIPN, Institut Galilée, CNRS UMR 7030, F-93430 Villetaneuse, France and Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O.B. MG-6, 077125 Magurele (Romania)

2014-04-15T23:59:59.000Z

378

Extremal generalized quantum measurements  

E-Print Network [OSTI]

A measurement on a section K of the set of states of a finite dimensional C*-algebra is defined as an affine map from K to a probability simplex. Special cases of such sections are used in description of quantum networks, in particular quantum channels. Measurements on a section correspond to equivalence classes of so-called generalized POVMs, which are called quantum testers in the case of networks. We find extremality conditions for measurements on K and characterize generalized POVMs such that the corresponding measurement is extremal. These results are applied to the set of channels. We find explicit extremality conditions for two outcome measurements on qubit channels and give an example of an extremal qubit 1-tester such that the corresponding measurement is not extremal.

Anna Jencova

2012-07-23T23:59:59.000Z

379

The Prospects of Alternatives to Vapor Compression Technology for Space Cooling and Food Refrigeration Applications  

SciTech Connect (OSTI)

Five alternatives to vapor compression technology were qualitatively evaluated to determine their prospects for being better than vapor compression for space cooling and food refrigeration applications. The results of the assessment are summarized in the report. Overall, thermoacoustic and magnetic technologies were judged to have the best prospects for competing with vapor compression technology, with thermotunneling, thermoelectric, and thermionic technologies trailing behind in that order.

Brown, Daryl R.; Dirks, James A.; Fernandez, Nicholas; Stout, Tyson E.

2010-03-31T23:59:59.000Z

380

X-ray Raman compression via two-stream instability in dense plasmas  

E-Print Network [OSTI]

A Raman compression scheme suitable for x-rays, where the Langmuir wave is created by an intense beam rather than the pondermotive potential between the seed and pump pulses, is proposed. The required intensity of the seed and pump pulses enabling the compression could be mitigated by more than a factor of 100, compared to conventionally available other Raman compression schemes. The relevant wavelength of x-rays ranges from 1 to 10 nm.

S. Son; Sung Joon Moon

2011-03-27T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

A Generalized Deletion Machine  

E-Print Network [OSTI]

In this work we prescribe a more generalized quantum-deleting machine (input state dependent). The fidelity of deletion is dependent on some machine parameters such that on alteration of machine parameters we get back to standard deleting machines. We also carried out a various comparative study of various kinds of quantum deleting machines. We also plotted graphs, making a comparative study of fidelity of deletion of the deletion machines, obtained as particular cases on changing the machine parameters of our machine.

Indranil Chakrabarty; Satyabrata Adhikari

2005-11-22T23:59:59.000Z

382

Generalized qudit Choi maps  

E-Print Network [OSTI]

Following the linear programming prescription of Ref. \\cite{PRA72}, the $d\\otimes d$ Bell diagonal entanglement witnesses are provided. By using Jamiolkowski isomorphism, it is shown that the corresponding positive maps are the generalized qudit Choi maps. Also by manipulating particular $d\\otimes d$ Bell diagonal separable states and constructing corresponding bound entangled states, it is shown that thus obtained $d\\otimes d$ BDEW's (consequently qudit Choi maps) are non-decomposable in certain range of their parameters.

M. A. Jafarizadeh; M. Rezaeen; S. Ahadpour

2006-07-24T23:59:59.000Z

383

General | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to: navigation, searchGeauga County, Ohio: Energy ResourcesEnergyGeneral Order No.>

384

Method of controlling coherent synchroton radiation-driven degradation of beam quality during bunch length compression  

DOE Patents [OSTI]

A method of avoiding CSR induced beam quality defects in free electron laser operation by a) controlling the rate of compression and b) using a novel means of integrating the compression with the remainder of the transport system: both are accomplished by means of dispersion modulation. A large dispersion is created in the penultimate dipole magnet of the compression region leading to rapid compression; this large dispersion is demagnified and dispersion suppression performed in a final small dipole. As a result, the bunch is short for only a small angular extent of the transport, and the resulting CSR excitation is small.

Douglas, David R. (Newport News, VA); Tennant, Christopher D. (Williamsburg, VA)

2012-07-10T23:59:59.000Z

385

E-Print Network 3.0 - adiabatic compression plasma Sample Search...  

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

and can depend on the compression history... . The transformation of thermal energy into wave energy increases the ... Source: Fisch, Nathaniel J.- Princeton Plasma Physics...

386

E-Print Network 3.0 - axially compressed cylinders Sample Search...  

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

securely using a chain, belt, or strap - Must... distances Safety: Gas Cylinders Massachusetts Institute of Technology EHS Compressed Gases SOP (21607) 12... not withstand...

387

Spectral compression algorithms for the analysis of very large multivariate images  

DOE Patents [OSTI]

A method for spectrally compressing data sets enables the efficient analysis of very large multivariate images. The spectral compression algorithm uses a factored representation of the data that can be obtained from Principal Components Analysis or other factorization technique. Furthermore, a block algorithm can be used for performing common operations more efficiently. An image analysis can be performed on the factored representation of the data, using only the most significant factors. The spectral compression algorithm can be combined with a spatial compression algorithm to provide further computational efficiencies.

Keenan, Michael R. (Albuquerque, NM)

2007-10-16T23:59:59.000Z

388

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange  

DOE Patents [OSTI]

In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.

McBride, Troy O; Bell, Alexander; Bollinger, Benjamin R; Shang, Andrew; Chmiel, David; Richter, Horst; Magari, Patrick; Cameron, Benjamin

2013-07-02T23:59:59.000Z

389

Evaluation of ANSI compression in a bulk data file transfer system.  

E-Print Network [OSTI]

??This report evaluates the use of a newly proposed American National Standard Institute (ANSI) standard for data compression in a bulk data transmission system. An… (more)

Chaulklin, Douglas Gary

2010-01-01T23:59:59.000Z

390

Neutralized Drift Compression Experiments (NDCX) with a High Intensity Ion Beam  

E-Print Network [OSTI]

compression; plasma; neutralization; diagnostics; inductioncolumn with plasma plug, and beam diagnostics. Figure 2(a)the plasma column. 3. Experiment setup and diagnostics The

2006-01-01T23:59:59.000Z

391

Effect of ambient conditions and fuel properties on homogeneous charge compression ignition engine operation  

E-Print Network [OSTI]

Practical application of Homogeneous Charge Compression Ignition (HCCI) combustion must demonstrate robust responses to variations in environmental conditions. This work examines the impact of ambient conditions and fuel ...

Andreae, Morgan M. (Morgan MacKenzie)

2006-01-01T23:59:59.000Z

392

E-Print Network 3.0 - aluminum-alloy flat compression Sample...  

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

tension compression tension (a) Longitudinal (b) Short transverse... DUCTILE FRACTURE CHARACTERIZATION OF ALUMINUM ALLOY 2024-T351 USING DAMAGE PLASTICITY THEORY LIANG...

393

Numerical Modeling of Failure in Magnesium Alloys under Axial Compression and Bending for Crashworthiness Applications.  

E-Print Network [OSTI]

??Numerical modeling of failure was performed for magnesium alloys with circular and square cross-sections under axial compression. The failure criterion was employed using material model… (more)

Ali, Usman

2012-01-01T23:59:59.000Z

394

Mechanical and electronic-structure properties of compressed CdSe tetrapod nanocrystals  

E-Print Network [OSTI]

Mechanical and electronic-structure properties of compressed94720 USA The coupling of mechanical and optical propertiestheoretical examination of the mechanical properties of CdSe

Schrier, Joshua; Lee, Byounghak; Wang, Lin-Wang

2008-01-01T23:59:59.000Z

395

Forming liquid sprays in compressed-gas energy storage systems for effective heat exchange  

DOE Patents [OSTI]

In various embodiments, efficiency of energy storage and recovery systems compressing and expanding gas is improved via heat exchange between the gas and a heat-transfer fluid.

McBride, Troy O.; Bell, Alexander; Bollinger, Benjamin R.

2012-08-07T23:59:59.000Z

396

E-Print Network 3.0 - adaptive pulse compression Sample Search...  

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

de mathmatiques Collection: Mathematics 10 Generation of 20-GHz picosecond pulse trains in the normal and anomalous dispersion Summary: compression in an anomalous dispersive...

397

E-Print Network 3.0 - artery compression syndrome Sample Search...  

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

results for: artery compression syndrome Page: << < 1 2 3 4 5 > >> 1 Journal of Biomedical Optics 16(2), 021110 (February 2011) Stent-induced coronary artery stenosis...

398

Generalized Adaptive A* Xiaoxun Sun  

E-Print Network [OSTI]

Generalized Adaptive A* Xiaoxun Sun USC Computer Science Los Angeles, California xiaoxuns spaces changes. Adaptive A* [7] is a Cite as: Generalized Adaptive A*, Xiaoxun Sun, Sven Koenig

Yeoh, William

399

Generalized utility metrics for supercomputers  

E-Print Network [OSTI]

2007:1–12 Generalized utility metrics for supercomputers 12.ISSUE PAPER Generalized utility metrics for supercomputersproblem of ranking the utility of supercom- puter systems

Strohmaier, Erich

2009-01-01T23:59:59.000Z

400

Generation of Coherent X-Ray Radiation Through Modulation Compression  

E-Print Network [OSTI]

In this letter, we propose a scheme to generate tunable coherent X-ray radiation for future light source applications. This scheme uses an energy chirped electron beam, a laser modulators, a laser chirper and two bunch compressors to generate a prebunched kilo-Ampere current electron beam from a few tens Ampere electron beam out of a linac. The initial modulation energy wavelength can be compressed by a factor of $1+h_b R_{56}^a$ in phase space, where $h_b$ is the energy bunch length chirp introduced by the laser chirper, $R_{56}^a$ is the momentum compaction factor of the first bunch compressor. As an illustration, we present an example to generate more than $400$ MW, $170$ atto-seconds pulse, $1$ nm coherent X-ray radiation using a $60$ Ampere electron beam out of the linac and $200$ nm laser seed. Both the final wavelength and the radiation pulse length in the proposed scheme are tunable by adjusting the compression factor and the laser parameters.

Qiang, Ji

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "luc general compression" 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

Modeling of homogeneous charge compression ignition (HCCI) of methane  

SciTech Connect (OSTI)

The operation of piston engines on a compression ignition cycle using a lean, homogeneous charge has many potential attractive features. These include the potential for extremely low NO{sub x} and particulate emissions while maintaining high thermal efficiency and not requiring the expensive high pressure injection system of the typical modem diesel engine. Using the HCT chemical kinetics code to simulate autoignition of methane-air mixtures, we have explored the ignition timing, burn duration, NO{sub x} production, indicated efficiency and power output of an engine with a compression ratio of 15:1 at 1200 and 2400 rpm. HCT was modified to include the effects of heat transfer. This study used a single control volume reaction zone that varies as a function of crank angle. The ignition process is controlled by varying the intake equivalence ratio and varying the residual gas trapping (RGT). RGT is internal exhaust gas recirculation which recycles both heat and combustion product species. It is accomplished by varying the timing of the exhaust valve closure. Inlet manifold temperature was held constant at 330 Kelvins. Results show that there is a narrow range of operational conditions that show promise of achieving the control necessary to vary power output while keeping indicated efficiency above 50% and NO{sub x} levels below 100 ppm.

Smith, J.R.; Aceves, S.M.; Westbrook, C.; Pitz, W.

1997-05-01T23:59:59.000Z

402

Generation of Coherent X-Ray Radiation Through Modulation Compression  

SciTech Connect (OSTI)

In this letter, we propose a scheme to generate tunable coherent X-ray radiation for future light source applications. This scheme uses an energy chirped electron beam, a laser modulators, a laser chirper and two bunch compressors to generate a prebunched kilo-Ampere current electron beam from a few tens Ampere electron beam out of a linac. The initial modulation energy wavelength can be compressed by a factor of 1 + h{sub b}R{sub 56}{sup a} phase space, where h{sub b} is the energy bunch length chirp introduced by the laser chirper, R{sub 56}{sup a} is the momentum compaction factor of the first bunch compressor. As an illustration, we present an example to generate more than 400 MW, 170 atto-seconds pulse, 1 nm coherent X-ray radiation using a 60 Ampere electron beam out. of the linac and 200 nm laser seed. Both the final wavelength and the radiation pulse length in the proposed scheme are tunable by adjusting the compression factor and the laser parameters.

Qiang, Ji; Wu, Juhao

2010-12-14T23:59:59.000Z

403

Optical transitions of holes in uniaxially compressed germanium  

SciTech Connect (OSTI)

Spontaneous emission and photoconductivity of germanium with gallium impurity are studied for determining the energy spectrum of hole states in this material in which radiation can be induced as a result of transitions of holes between these states. Holes were excited by electric field pulses with a strength up to 12 kV/cm at T = 4.2 K under uniaxial compression of samples up to 12 kbar. It has been found that hole emission spectra for transitions between resonant and local states of the impurity have a structure identical to the photoconductivity and absorption spectra. Transitions from resonance states, which are associated with the heavy hole subband, have not been detected. It has been found that in an electric field lower than 100 V/cm, a compressed crystal emits as a result of transitions of heavy holes. In a strong electric field (1-3 kV/cm), emission is observed in the energy range up to 140 meV, and transitions with emission of TA and LO phonons appear in such a field. The emission spectra under pressures of 0 and 12 kbar differ insignificantly. Hence, it follows that the contributions from heavy and light holes in a strong electric field are indistinguishable.

Pokrovskii, Ya. E., E-mail: yaep@cplire.ru; Khvalkovskii, N. A. [Russian Academy of Sciences, Kotel'nikov Institute of Radio Engineering and Electronics (Russian Federation)] [Russian Academy of Sciences, Kotel'nikov Institute of Radio Engineering and Electronics (Russian Federation)

2013-10-15T23:59:59.000Z

404

Massive-scale RDF Processing Using Compressed Bitmap Indexes  

SciTech Connect (OSTI)

The Resource Description Framework (RDF) is a popular data model for representing linked data sets arising from the web, as well as large scienti#12;c data repositories such as UniProt. RDF data intrinsically represents a labeled and directed multi-graph. SPARQL is a query language for RDF that expresses subgraph pattern-#12;nding queries on this implicit multigraph in a SQL- like syntax. SPARQL queries generate complex intermediate join queries; to compute these joins e#14;ciently, we propose a new strategy based on bitmap indexes. We store the RDF data in column-oriented structures as compressed bitmaps along with two dictionaries. This paper makes three new contributions. (i) We present an e#14;cient parallel strategy for parsing the raw RDF data, building dictionaries of unique entities, and creating compressed bitmap indexes of the data. (ii) We utilize the constructed bitmap indexes to e#14;ciently answer SPARQL queries, simplifying the join evaluations. (iii) To quantify the performance impact of using bitmap indexes, we compare our approach to the state-of-the-art triple-store RDF-3X. We #12;nd that our bitmap index-based approach to answering queries is up to an order of magnitude faster for a variety of SPARQL queries, on gigascale RDF data sets.

Madduri, Kamesh; Wu, Kesheng

2011-05-26T23:59:59.000Z

405

In situ repair of a failed compression fitting  

DOE Patents [OSTI]

A method and apparatus for the in situ repair of a failed compression fitting is provided. Initially, a portion of a guide tube is inserted coaxially in the bore of the compression fitting and locked therein. A close fit dethreading device is then coaxially mounted on the guide tube to cut the threads from the fitting. Thereafter, the dethreading device and guide tube are removed and a new fitting is inserted onto the dethreaded fitting with the body of the new fitting overlaying the dethreaded portion. Finally, the main body of the new fitting is welded to the main body of the old fitting whereby a new threaded portion of the replacement fitting is precisely coaxial with the old threaded portion. If needed, a bushing is located on the dethreaded portion which is sized to fit snugly between the dethreaded portion and the new fitting. Preferably, the dethreading device includes a cutting tool which is moved incrementally in a radial direction whereby the threads are cut from the threaded portion of the failed fitting in increments.

Wolbert, R.R.; Jandrasits, W.G.

1985-08-05T23:59:59.000Z

406

In situ repair of a failed compression fitting  

DOE Patents [OSTI]

A method and apparatus for the in situ repair of a failed compression fitg is provided. Initially, a portion of a guide tube is inserted coaxially in the bore of the compression fitting and locked therein. A close fit dethreading device is then coaxially mounted on the guide tube to cut the threads from the fitting. Thereafter, the dethreading device and guide tube are removed and a new fitting is inserted onto the dethreaded fitting with the body of the new fitting overlaying the dethreaded portion. Finally, the main body of the new fitting is welded to the main body of the old fitting whereby a new threaded portion of the replacement fitting is precisely coaxial with the old threaded portion. If needed, a bushing is located on the dethreaded portion which is sized to fit snugly between the dethreaded portion and the new fitting. Preferably, the dethreading device includes a cutting tool which is moved incrementally in a radial direction whereby the threads are cut from the threaded portion of the failed fitting in increments.

Wolbert, Ronald R. (McKees Rocks, PA); Jandrasits, Walter G. (Pittsburgh, PA)

1986-01-01T23:59:59.000Z

407

7Li General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- Decay Evaluated7-ID ThirdBBeLi General

408

8He General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables The

409

8Li General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables TheÎČ--DecayLi

410

9C General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables8 2BBBe

411

9He General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables8 2BBBeHeHe

412

9Li General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBe General Tables8 2BBBeHeHeLiLi

413

A = 6 General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBenew20-Year6 General Tables The

414

A = 7 General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBenew20-Year6 General Tables The7

415

A = 8 General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBenew20-Year6 General Tables

416

A = 9 General Tables  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe ÎČ- DecayBenew20-Year6 General Tables9

417

general_atomics.cdr  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C.Greentnv~ronmenrar ivronrrorrng Lformer General

418

General User Proposals (GUPs)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Big Sky Learning Fun withGenepoolCrystals. | EMSL SchemaGeneral User

419

OFFICE OF INSPECTOR GENERAL  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office0-72.pdfGeorgeDoesn't32DepartmentWells517 Federaliof Energy

420

General Resources - Hanford Site  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor'sshort version) ThelongEmailStatusGeneral

Note: This page contains sample records for the topic "luc general compression" 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

Method and apparatus for de-watering biomass materials in a compression drying process  

DOE Patents [OSTI]

A method and apparatus for more effectively squeezing moisture from wood chips and/or other "green" biomass materials. A press comprising a generally closed chamber having a laterally movable base at the lower end thereof, and a piston or ram conforming in shape to the cross-section of the chamber is adapted to periodically receive a charge of biomass material to be dehydrated. The ram is forced against the biomass material with suffcient force to compress the biomass and to crush the matrix in which moisture is contained within the material with the face of the ram being configured to cause a preferential flow of moisture from the center of the mass outwardly to the grooved walls of the chamber. Thus, the moisture is effectively squeezed from the biomass and flows through the grooves formed in the walls of the chamber to a collecting receptacle and is not drawn back into the mass by capillary action when the force is removed from the ram.

Haygreen, John G. (Roseville, MN)

1986-01-01T23:59:59.000Z

422

On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking  

E-Print Network [OSTI]

A On the Performance of Lossy Compression Schemes for Energy Constrained Sensor Networking DAVIDE of Padova Lossy temporal compression is key for energy constrained wireless sensor networks (WSN), where complexity and energy consumption. Specifically, we first carry out a performance evaluation of existing

Rossi, Michele

423

SPATIAL-TEMPORAL TECHNIQUES FOR PREDICTION AND COMPRESSION OF SOIL FERTILITY DATA  

E-Print Network [OSTI]

SPATIAL-TEMPORAL TECHNIQUES FOR PREDICTION AND COMPRESSION OF SOIL FERTILITY DATA D. Pokrajac propose several techniques for data reduction and spatial- temporal prediction in precision agriculture and applied for analysis and compression of multi-temporal precision agriculture data. The spatial

Obradovic, Zoran

424

Compressible air cushioning in liquid-solid impacts Peter D. Hicks  

E-Print Network [OSTI]

Compressible air cushioning in liquid-solid impacts Peter D. Hicks Department of Mechanical of Mathematics, University of East Anglia, Norwich, NR4 7TJ, UK. r.purvis@uea.ac.uk Abstract--Air cushioning the influence of air compressibility. Building on earlier incompress- ible analyses, a local asymptotic model

Purvis, Richard

425

Simultaneous compression and characterization of ultrashort laser pulses using chirped mirrors and glass wedges  

E-Print Network [OSTI]

We present a simple and robust technique to retrieve the phase of ultrashort laser pulses, based on a chirped mirror and glass wedges compressor. It uses the compression system itself as a diagnostic tool, thereby making unnecessary the use of complementary diagnostic tools. We used this technique to compress and characterize 7.1 fs laser pulses from an ultrafast laser oscillator.

Miranda, Miguel; Arnold, Cord; L'Huillier, Anne; Crespo, Helder

2011-01-01T23:59:59.000Z

426

Improving MPEG-4 coding performance by jointly optimising compression and blocking effect elimination  

E-Print Network [OSTI]

1 Improving MPEG-4 coding performance by jointly optimising compression and blocking effect and Information Engineering The Hong Kong Polytechnic University, Hong Kong ABSTRACT In most current block into account in the compression and the two processes can be jointly optimised. An example is also provided

Chan, Chris Y. H.

427

Numerical study of compressibility effects on the reversed shear Alfvén eigenmode in tokamak plasma  

SciTech Connect (OSTI)

Compressibility effects on the reversed shear Alfvén eigenmode in tokamak plasma are studied numerically. It is shown that compressibility is favorable for the existence of the reversed shear Alfvén eigenmode even without the pressure gradient, and the frequency of the reversed shear Alfvén eigenmode is modified by the geodesic frequency, which is consistent with an analytical theory.

Yu, Limin; Zhang, Xianmei [Department of Physics, East China University of Science and Technology, Shanghai 200237 (China)] [Department of Physics, East China University of Science and Technology, Shanghai 200237 (China); Sheng, Zheng-Mao [Department of Physics, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)] [Department of Physics, Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)

2013-08-15T23:59:59.000Z

428

Stress state of diamond and gold under nonhydrostatic compression Jianghua Wang,1  

E-Print Network [OSTI]

for the polycrystalline gold under the highest load. Polycrystalline diamond can support a microscopic deviatoric stress of polycrystalline diamond and gold in the DAC under nonhydrostatic compression to above 300 GPa. The influenceStress state of diamond and gold under nonhydrostatic compression to 360 GPa Jianghua Wang,1

Duffy, Thomas S.

429

A quenchable superhard carbon phase synthesized by cold compression of carbon nanotubes  

E-Print Network [OSTI]

A quenchable superhard carbon phase synthesized by cold compression of carbon nanotubes Zhongwu) A quenchable superhard high-pressure carbon phase was synthe- sized by cold compression of carbon nanotubes. Carbon nanotubes were placed in a diamond anvil cell, and x-ray diffraction measure- ments were conducted

Downs, Robert T.

430

A Mixed Finite Element Approximation for Compressible Flow of Contamination from Nuclear  

E-Print Network [OSTI]

A Mixed Finite Element Approximation for Compressible Flow of Contamination from Nuclear Waste in Porous Media S. H. CHOU AND Q. LI Abstract A compressible nuclear waste disposal contamination in porous of this system using a finite element method for the brine, radionuclides, and heat combined with a mixed finite

Chou, So-Hsiang

431

On the Doi Model for the suspensions of rod-like molecules in compressible fluids  

E-Print Network [OSTI]

On the Doi Model for the suspensions of rod-like molecules in compressible fluids Hantaek Bae and Konstantina Trivisa Key words: Doi model, suspensions of rod-like molecules, fluid-particle interaction model, compressible Navier-Stokes equations, Fokker-Planck-type equation. Abstract Polymeric fluids arise in many

Milchberg, Howard

432

Density Dependent Exchange Contribution to @=@n and Compressibility in Graphene E. H. Hwang,1  

E-Print Network [OSTI]

Density Dependent Exchange Contribution to @=@n and Compressibility in Graphene E. H. Hwang,1 Ben potential and n electron density), which is associated with the compressibility, in graphene as a function in the quasiparticle velocity of intrinsic graphene disappears in the extrinsic case. The calculated renormalized @=@n

Hu, Ben Yu-Kuang

433

Model-based Compressed Sensing reconstruction for MR parameter mapping Mariya Doneva1  

E-Print Network [OSTI]

Model-based Compressed Sensing reconstruction for MR parameter mapping Mariya Doneva1 , Christian Stehning2 , Peter Börnert2 , Holger Eggers2 and Alfred Mertins1 1 University of Luebeck, Luebeck, Germany, 2 Philips Research Europe, Hamburg, Germany Introduction: Compressed Sensing [1-4] suggests

LĂŒbeck, UniversitĂ€t zu

434

Compressing Rectilinear Pictures and Minimizing Access Control Lists David L. Applegate  

E-Print Network [OSTI]

Compressing Rectilinear Pictures and Minimizing Access Control Lists David L. Applegate Gruia model for the problem of minimiz- ing access control lists (ACLs) in network routers, a model that also has applications to rectilinear picture compression and figure drawing in common graphics software

Ligett, Katrina

435

Hydro-Mechanical Loading and Compressibility of Fibrous Media for Resin Infusion Processes  

E-Print Network [OSTI]

1 Hydro-Mechanical Loading and Compressibility of Fibrous Media for Resin Infusion Processes P investigating the compressibility behaviour of composite preform with a view of modelling resin infusion Infusion The need for manufacturing large composite parts in the aeronautic industry is ever increasing

Paris-Sud XI, Université de

436

Un nouveau type de pompe chaleur : la PAC compression-absorption fonctionnement altern  

E-Print Network [OSTI]

de l'électricité. Abstract 2014 The new heat pump, here proposed, is intermediate between a compression heat pump and an absorp- tion heat pump. Like the absorption heat pump, it uses a binary mixture made of a volatile solvent and a non-volatile solute. Like the compression heat pump, it uses

Paris-Sud XI, Université de

437

A Method for Compressing Test Data Based on Burrows-Wheeler Transformation  

E-Print Network [OSTI]

A Method for Compressing Test Data Based on Burrows-Wheeler Transformation Takahiro J. Yamaguchi AbstractÐThe overall throughput of automatic test equipment (ATE) is affected by the download time of test data. An effective approach to the reduction of the download time is to compress test data before

Ha, Dong S.

438

Compressing magnetic fields with high-energy lasersa... J. P. Knauer,1,b  

E-Print Network [OSTI]

Compressing magnetic fields with high-energy lasersa... J. P. Knauer,1,b O. V. Gotchev,1,2,3 P. Y, Rochester, New York 14623, USA 3 Department of Mechanical Engineering, University of Rochester, 250 East-driven magnetic-field compression producing a magnetic field of tens of megaGauss is reported for the first time

439

Numerical Modeling of Hydro-acoustic Waves In Weakly Compressible Fluid Ali Abdolali1,2  

E-Print Network [OSTI]

Numerical Modeling of Hydro-acoustic Waves In Weakly Compressible Fluid Ali Abdolali1,2 , James T of Civil Engineering, University of Roma Tre Low-frequency hydro-acoustic waves are precursors of tsunamis. Detection of hydro-acoustic waves generated due to the water column compression triggered by sudden seabed

Kirby, James T.

440

Denoual, C., and Diani, J.M., 2002, ``Cavitation in Compressible Visco-Plastic Materials",  

E-Print Network [OSTI]

Denoual, C., and Diani, J.M., 2002, ``Cavitation in Compressible Visco-Plastic Materials", Shock-498. CAVITATION IN COMPRESSIBLE VISCO­PLASTIC MATERIALS C. Denoual and J. M. Diani DŽepartement de Physique Th materials in hydrostatic tension is a cavitation instabil- ity ¥£¹„€ , i.e., nucleation and coalescence

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "luc general compression" 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

A high-resolution mapped grid algorithm for compressible multiphase flow problems  

E-Print Network [OSTI]

A high-resolution mapped grid algorithm for compressible multiphase flow problems K.-M. Shyue 18 August 2010 Keywords: Compressible multiphase flow Fluid-mixture model Mapped grids Wave-propagation method Stiffened gas equation of state a b s t r a c t We describe a simple mapped-grid approach

Shyue, Keh-Ming

442

Tuning JPEG2000 Image Compression for Graphics Regions Serene Banerjee and Brian L. Evans  

E-Print Network [OSTI]

Tuning JPEG2000 Image Compression for Graphics Regions Serene Banerjee and Brian L. Evans Dept contain formatted text and graphics data. For graphics images at the same low bit rates, graphics compression methods, such as the graphics interchange format GIF and portable network graphics PNG, outperform

Evans, Brian L.

443

Submitted to the IEEE Transactions on Biomedical Engineering Wavelet Compression of ECG Signals by the Set  

E-Print Network [OSTI]

Submitted to the IEEE Transactions on Biomedical Engineering Wavelet Compression of ECG Signals 12180-3590 January 12, 2000 Abstract A wavelet ECG data codec based on the Set Partitioning) case and applied it to compression of ECG data. Experiments on selected records from the MIT

444

Simultaneous Greedy Analysis Pursuit for Compressive Sensing of Multi-Channel ECG Signals  

E-Print Network [OSTI]

Simultaneous Greedy Analysis Pursuit for Compressive Sensing of Multi-Channel ECG Signals Yurrit sensing for multi- channel ECG signals. In contrast to the traditional sparse approach where the signal of compressive sensing for ECG signals. Moreover, to efficiently recover multi-channel ECG signals, clas- sical

445

Signal Processing 59 (1997) 43-59 ECG data compression by spline approximation  

E-Print Network [OSTI]

SIGN& PROCESSING Signal Processing 59 (1997) 43-59 ECG data compression by spline approximation transform method for ECG data compression based on B-spline basis functions is proposed. The algorithm allows these basis functions to adapt their shape to the nonstationary behavior of ECG signals

Gabbouj, Moncef

446

Joining mechanism with stem tension and interlocked compression ring  

DOE Patents [OSTI]

A stem (34) extends from a second part (30) through a hole (28) in a first part (22). A groove (38) around the stem provides a non-threaded contact surface (42) for a ring element (44) around the stem. The ring element exerts an inward force against the non-threaded contact surface at an angle that creates axial tension (T) in the stem, pulling the second part against the first part. The ring element is formed of a material that shrinks relative to the stem by sintering. The ring element may include a split collet (44C) that fits partly into the groove, and a compression ring (44E) around the collet. The non-threaded contact surface and a mating distal surface (48) of the ring element may have conic geometries (64). After shrinkage, the ring element is locked onto the stem.

James, Allister W.; Morrison, Jay A.

2012-09-04T23:59:59.000Z

447

Compressed air energy storage technology program. Annual report for 1979  

SciTech Connect (OSTI)

The objectives of the Compressed Air Energy Storage (CAES) program are to establish stability criteria for large underground reservoirs in salt domes, hard rock, and porous rock used for air storage in utility applications, and to develop second-generation CAES technologies that have minimal or no dependence on petroleum fuels. During the year reported reports have been issued on field studies on CAES on aquifers and in salt, stability, and design criteria for CAES and for pumped hydro-storage caverns, laboratory studies of CAES in porous rock reservoris have continued. Research has continued on combined CAES/Thermal Energy Storage, CAES/Solar systems, coal-fired fluidized bed combustors for CAES, and two-reservoir advanced CAES concepts. (LCL)

Loscutoff, W.V.

1980-06-01T23:59:59.000Z

448

Raytheon: Compressed Air System Upgrade Saves Energy and Improves Performance  

SciTech Connect (OSTI)

In 2003, Raytheon Company upgraded the efficiency of the compressed air system at its Integrated Air Defense Center in Andover, Massachusetts, to save energy and reduce costs. Worn compressors and dryers were replaced, a more sophisticated control strategy was installed, and an aggressive leak detection and repair effort was carried out. The total cost of these improvements was $342,000; however, National Grid, a utility service provider, contributed a $174,000 incentive payment. Total annual energy and maintenance cost savings are estimated at $141,500, and energy savings are nearly 1.6 million kWh. This case study was prepared for the U.S. Department of Energy's Industrial Technologies Program.

Not Available

2005-04-01T23:59:59.000Z

449

Chemical preparation and shock wave compression of carbon nitride precursors  

SciTech Connect (OSTI)

Two synthetic routes have been developed to produce high-molecular-weight organic precursors containing a high weight fraction of nitrogen. One of the precursors is a pyrolysis residue of melamine-formaldehyde resin. The second precursor is the byproduct of an unusual low-temperature combustion reaction of tetrazole and its sodium salt. These precursors have been shock compressed under typical conditions for diamond and wurtzite boron nitride synthesis in an attempt to recover a new ultrahard carbon nitride. The recovered material has been analyzed by X-ray diffraction, FTIR, and Raman microprobe analysis. Diamond is present in the recovered material. This diamond is well ordered relative to diamond shock synthesized from carbonaceous starting materials.

Wixon, M.R. (KMS Fusion, Inc., Ann Arbor, MI (USA))

1990-07-01T23:59:59.000Z

450

Metal liner-driven quasi-isentropic compression of deuterium  

SciTech Connect (OSTI)

Properties of degenerate hydrogen and deuterium (D) at pressures of the order of terapascals are of key interest to Planetary Science and Inertial Confinement Fusion. In order to recreate these conditions in the laboratory, we present a scheme, where a metal liner drives a cylindrically convergent quasi-isentropic compression in a D fill. We first determined an external pressure history for driving a self-similar implosion of a D shell from a fictitious flow simulation [D. S. Clark and M. Tabak, Nucl. Fusion 47, 1147 (2007)]. Then, it is shown that this D implosion can be recreated inside a beryllium liner by shaping the current pulse. For a peak current of 10.8 MA cold and nearly isochoric D is assembled at around 12 500 kg/m{sup 3}. Finally, our two-dimensional Gorgon simulations show the robustness of the implosion method to the magneto-Rayleigh-Taylor instability when using a sufficiently thick liner.

Weinwurm, Marcus; Bland, Simon N.; Chittenden, Jeremy P. [Blackett Laboratory, Imperial College, London SW7 2BW (United Kingdom)] [Blackett Laboratory, Imperial College, London SW7 2BW (United Kingdom)

2013-09-15T23:59:59.000Z

451

Diesol: an alternative fuel for compression ignition engines  

SciTech Connect (OSTI)

Physical properties including specific gravity, kinematic viscosity, heat of combustion, flash point, cetane number and distillation curves are presented for several blends of No. 2 diesel fuel and soybean oil. The mixture is referred to as Diesol. The soybean oil received a minimal amount of refining by water-washing to remove most of the lecithin type gums. The Diesol fuels were tested in a Cooperative Fuel Research single cylinder diesel test engine to determine the short time engine performance using soybean oil as a diesel fuel extender. Brake specific fuel consumption, volumetric fuel consumption, exhaust smoke opacity and power were determined. Various blends of Diesol were also tested in a multicylinder diesel commercial power system. Results are presented to show the comparison between Diesol blends and diesel fuel. The fuel properties and engine performance test results indicate that soybean oil would be a viable extender of diesel fuel for compression-ignition engines.

Cochran, B.J.; Baldwin, J.D.C.; Daniel, L.R. Jr.

1981-01-01T23:59:59.000Z

452

Dynamic Time Expansion and Compression Using Nonlinear Waveguides  

DOE Patents [OSTI]

Dynamic time expansion or compression of a small amplitude input signal generated with an initial scale is performed using a nonlinear waveguide. A nonlinear waveguide having a variable refractive index is connected to a bias voltage source having a bias signal amplitude that is large relative to the input signal to vary the reflective index and concomitant speed of propagation of the nonlinear waveguide and an electrical circuit for applying the small amplitude signal and the large amplitude bias signal simultaneously to the nonlinear waveguide. The large amplitude bias signal with the input signal alters the speed of propagation of the small-amplitude signal with time in the nonlinear waveguide to expand or contract the initial time scale of the small-amplitude input signal.

Findikoglu, Alp T.; Hahn, Sangkoo F.; Jia, Quanxi

2004-06-22T23:59:59.000Z

453

Technology alternatives to CFC/HCFC vapor compression  

SciTech Connect (OSTI)

Phaseouts of CFCs and HCFCs to protect the stratospheric ozone layer have caused many developments in replacement or alternative technologies for heat pumping. Some of this effort has been of an ``evolutionary`` nature where the designs of conventional vapor compression systems were adapted to use chlorine-free refrigerants. Other alternatives are more radical departures from conventional practice such as operating above the critical point of an alternative refrigerant. Revolutionary changes in technology based on cycles sor principles not commonly associated with refrigeration have also attracted interest. Many of these technologies are being touted because they are ``ozone-safe`` or because they do not use greenhouse gases as refrigerants. Basic principles and some advantages and disadvantages of each technology are discussed in this paper.

Fischer, S.

1996-08-01T23:59:59.000Z

454

Ocean General Circulation Models  

SciTech Connect (OSTI)

1. Definition of Subject The purpose of this text is to provide an introduction to aspects of oceanic general circulation models (OGCMs), an important component of Climate System or Earth System Model (ESM). The role of the ocean in ESMs is described in Chapter XX (EDITOR: PLEASE FIND THE COUPLED CLIMATE or EARTH SYSTEM MODELING CHAPTERS). The emerging need for understanding the Earth’s climate system and especially projecting its future evolution has encouraged scientists to explore the dynamical, physical, and biogeochemical processes in the ocean. Understanding the role of these processes in the climate system is an interesting and challenging scientific subject. For example, a research question how much extra heat or CO2 generated by anthropogenic activities can be stored in the deep ocean is not only scientifically interesting but also important in projecting future climate of the earth. Thus, OGCMs have been developed and applied to investigate the various oceanic processes and their role in the climate system.

Yoon, Jin-Ho; Ma, Po-Lun

2012-09-30T23:59:59.000Z

455

Pair distribution function study on compression of liquid gallium  

SciTech Connect (OSTI)

Integrating a hydrothermal diamond anvil cell (HDAC) and focused high energy x-ray beam from the superconductor wiggler X17 beamline at the National Synchrotron Light Source (NSLS) at the Brookhaven National Laboratory (BNL), we have successfully collected high quality total x-ray scattering data of liquid gallium. The experiments were conducted at a pressure range from 0.1GPa up to 2GPa at ambient temperature. For the first time, pair distribution functions (PDF) for liquid gallium at high pressure were derived up to 10 {angstrom}. Liquid gallium structure has been studied by x-ray absorption (Di Cicco & Filipponi, 1993; Wei et al., 2000; Comez et al., 2001), x-ray diffraction studies (Waseda & Suzuki, 1972), and molecular dynamics simulation (Tsay, 1993; Hui et al., 2002). These previous reports have focused on the 1st nearest neighbor structure, which tells us little about the atomic arrangement outside the first shell in non- crystalline materials. This study focuses on the structure of liquid gallium and the atomic structure change due to compression. The PDF results show that the observed atomic distance of the first nearest neighbor at 2.78 {angstrom} (first G(r) peak and its shoulder at the higher Q position) is consistent with previous studies by x-ray absorption (2.76 {angstrom}, Comez et al., 2001). We have also observed that the first nearest neighbor peak position did not change with pressure increasing, while the farther peaks positions in the intermediate distance range decreased with pressure increasing. This leads to a conclusion of the possible existence of 'locally rigid units' in the liquid. With the addition of reverse Monte Carlo modeling, we have observed that the coordination number in the local rigit unit increases with pressure. The bulk modulus of liquid gallium derived from the volume compression curve at ambient temperature (300K) is 12.1(6) GPa.

Luo, Shengnian [Los Alamos National Laboratory; Yu, Tony [SUNY-SB; Chen, Jiuhua [SUNY-SB; Ehm, Lars [SUNY-SB; Guo, Quanzhong [SUNY-SB; Parise, John [SUNY-SB

2008-01-01T23:59:59.000Z

456

BuildSense Compressed natural gas (CNG) bi-fuel conversions for two Ford F-series pickup trucks.  

E-Print Network [OSTI]

BuildSense Compressed natural gas (CNG) bi-fuel conversions for two Ford F-series pickup trucks $141,279 $35,320 $176,599 City of Charlotte Solid Waste Services Compressed natural gas ( CNG) up fits

457

The Dynamic Compressive Response of an Open-Cell Foam Impregnated With a Non-Newtonian Fluid  

E-Print Network [OSTI]

The response of a reticulated, elastomeric foam filled with colloidal silica under dynamic compression is studied. Under compression beyond local strain rates on the order of 1 s[superscript ?1], the non-Newtonian, colloidal ...

Dawson, Matthew A.

458

Proof-of-Concept Manufacturing and Testing of Composite Wind Generator Blades Made by HCBMP (High Compression Bladder Molded Prepreg)  

SciTech Connect (OSTI)

Proof-of-Concept Manufacturing and Testing of Composite Wind Generator Blades Made by HCBMP (High Compression Bladder Molded Prepreg)

William C. Leighty; DOE Project Officer - Keith Bennett

2005-10-04T23:59:59.000Z

459

Generalized Multicoincidence Analysis Methods  

SciTech Connect (OSTI)

The ability to conduct automated trace radionuclide analysis at or near the sample collection point would provide a valuable tool for emergency response, nuclear forensics and environmental monitoring. Pacific Northwest National Laboratory is developing systems for this purpose based on dual gamma-ray spectrometers, e.g. NaI(TI) or HPGe, combined with thin organic scintillator sensors to detect light charged particles. Translating the coincident signatures recorded by these systems, which include , and , into the concentration of detectable radionuclides in the sample requires generalized multicoincidence analysis tools. The development and validation of the Coincidence Lookup Library, which currently contains the probabilities of single and coincidence signatures from more than 420 isotopes, is described. Also discussed is a method to calculate the probability of observing a coincidence signature which incorporates true coincidence summing effects. These effects are particularly important for high-geometric-efficiency detection systems. Finally, a process for validating the integrated analysis software package is demonstrated using GEANT 4 simulations of the prototype detector systems.

Warren, Glen A.; Smith, Leon E.; Aalseth, Craig E.; Ellis, J. E.; Valsan, Andrei B.; Mengesha, Wondwosen

2005-10-01T23:59:59.000Z

460

General anesthesia, sleep, and coma  

E-Print Network [OSTI]

In the United States, nearly 60,000 patients per day receive general anesthesia for surgery.1 General anesthesia is a drug-induced, reversible condition that includes specific behavioral and physiological traits — ...

Brown, Emery N.

Note: This page contains sample records for the topic "luc general compression" 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

General anesthesia, sleep and coma  

E-Print Network [OSTI]

In the United States, nearly 60,000 patients per day receive general anesthesia for surgery.1 General anesthesia is a drug-induced, reversible condition that includes specific behavioral and physiological traits — ...

Schiff, Nicholas D.

462

TECHNOLOGIES TO ENHANCE THE OPERATION OF EXISTING NATURAL GAS COMPRESSION INFRASTRUCTURE  

SciTech Connect (OSTI)

This project has documented and demonstrated the feasibility of technologies and operational choices for companies who operate the large installed fleet of integral engine compressors in pipeline service. Continued operations of this fleet is required to meet the projected growth of the U.S. gas market. Applying project results will meet the goals of the DOE-NETL Natural Gas Infrastructure program to enhance integrity, extend life, improve efficiency, and increase capacity, while managing NOx emissions. These benefits will translate into lower cost, more reliable gas transmission, and options for increasing deliverability from the existing infrastructure on high demand days. The power cylinders on large bore slow-speed integral engine/compressors do not in general combust equally. Variations in cylinder pressure between power cylinders occur cycle-to-cycle. These variations affect both individual cylinder performance and unit average performance. The magnitude of the variations in power cylinder combustion is dependent on a variety of parameters, including air/fuel ratio. Large variations in cylinder performance and peak firing pressure can lead to detonation and misfires, both of which can be damaging to the unit. Reducing the variation in combustion pressure, and moving the high and low performing cylinders closer to the mean is the goal of engine balancing. The benefit of improving the state of the engine ''balance'' is a small reduction in heat rate and a significant reduction in both crankshaft strain and emissions. A new method invented during the course of this project is combustion pressure ratio (CPR) balancing. This method is more effective than current methods because it naturally accounts for differences in compression pressure, which results from cylinder-to-cylinder differences in the amount of air flowing through the inlet ports and trapped at port closure. It also helps avoid compensation for low compression pressure by the addition of excess fuel to achieve equalizing peak firing pressure, even if some of the compression pressure differences are attributed to differences in cylinder and piston geometry, clearance, and kinematics. The combination of high-pressure fuel injection and turbocharging should produce better mixing of fuel and air in lean mixtures. Test results documented modest improvements in heat rate and efficiency and significant improvements in emissions. The feasibility of a closed-loop control of waste-gate setting, which will maintain an equivalence ratio set point, has been demonstrated. This capability allows more direct tuning to enhance combustion stability, heat rate, or emissions. The project has documented the strong dependence of heat rate on load. The feasibility of directly measuring power and torque using the GMRC Rod Load Monitor (RLM) has been demonstrated. This capability helps to optimize heat rate while avoiding overload. The crankshaft Strain Data Capture Module (SDCM) has shown the sensitivity to changes in operating conditions and how they influence crankshaft bending strain. The results indicate that: balancing reduces the frequency of high-strain excursions, advanced timing directly increases crankshaft dynamic strain, reduced speed directly reduces strain, and high-pressure fuel injection reduces crankshaft strain slightly. The project demonstrated that when the timing is advanced, the heat rate is reduced, and when the timing is retarded, the heat rate is increased. One reason why timing is not advanced as much as it might be is the potential for detonation on hot days. A low-cost knock detector was demonstrated that allowed active control to use timing to allow the heat rate benefit to be realized safely. High flow resistance losses in the pulsation control systems installed on some compressors have been shown to hurt efficiency of both compressor and engine/compressor system. Improved pulsation control systems have the potential to recover almost 10% of available engine power. Integrity enhancements and reduced component failure probability will enhance aggregate

Anthony J. Smalley; Ralph E. Harris; Gary D. Bourn; Ford A. Phillips; Danny M. Deffenbaugh

2006-05-31T23:59:59.000Z

463

Want Some Money Back from your Compressed Air System? Check Out These Top 10 Areas to Look  

E-Print Network [OSTI]

Compressed air is often overlooked in energy studies because many people don't fully understand compressed air equipment, the air system or what it costs to produce compressed air power. For those willing to look and use some good old common sense it is...

Van Ormer, H.

2004-01-01T23:59:59.000Z

464

Modelling of the Effects of Friction and Compression on Explosives ESGI80 Modelling of the Effects of Friction and  

E-Print Network [OSTI]

Modelling of the Effects of Friction and Compression on Explosives ESGI80 Modelling of the Effects of Friction and Compression on Explosives Problem presented by John Curtis Atomic Weapons Establishment, based on the compression of a sample of the explosive. The study group identified frictional heating

Purvis, Richard

465

Revenue Maximization of Electricity Generation for a Wind Turbine Integrated with a Compressed Air Energy Storage System  

E-Print Network [OSTI]

controller is developed for a Compressed Air Energy Storage (CAES) system integrated with a wind turbine storage vessel. The storage vessel contains both liquid and compressed air at the same pressure. Energy significant reduction in generation costs. Among all different types of energy storage approaches, compressed

Li, Perry Y.

466

Modeling and control of an open accumulator Compressed Air Energy Storage (CAES) system for wind turbines q  

E-Print Network [OSTI]

Modeling and control of an open accumulator Compressed Air Energy Storage (CAES) system for wind compressed air energy storage. Maximizes energy production, levels load, downsizes electrical parts, meets presents the modeling and control for a novel Compressed Air Energy Storage (CAES) system for wind turbines

Li, Perry Y.

467

Abstract--A novel compressed air energy storage system for wind turbine is proposed. It captures excess power prior to  

E-Print Network [OSTI]

Abstract-- A novel compressed air energy storage system for wind turbine is proposed. It captures instead of supply. Energy is stored in a high pressure dual chamber liquid-compressed air storage vessel components can be downsized for demand instead of supply. A novel Compressed Air Energy Storage (CAES

Li, Perry Y.

468

Abstract--For a Compressed Air Energy Storage (CAES) approach to be viable, the air compressor/expander must be  

E-Print Network [OSTI]

Abstract-- For a Compressed Air Energy Storage (CAES) approach to be viable, the air compressor improvement can also be determined using this method. I. INTRODUCTION novel Compressed Air Energy Storage advantage of pneumatics. High pressure (~20-30MPa) compressed air is stored in a dual chamber storage vessel

Li, Perry Y.

469

Simple Limits on Achieving A Quasi-Linear Magnetic Compression for an FEL Driver  

SciTech Connect (OSTI)

Free electron lasers (FEL) need a very bright electron beam in three dimensions and a high peak charge density. In order to compress an initially longer electron bunch generated from the photoinjector, magnetic bunch compression systems are widely employed. In this paper, first harmonic RF linearization and its associated requirements are reviewed. Meanwhile it is also briefly discussed what is the relation between a proper initial bunch length and main RF frequency, when a harmonic RF linearization is included. Then given a reasonable bunch compression ratio, a proper initial bunch length as a function of the main RF frequency and RF phase is estimated analytically by several approaches, assuming that no harmonic RF section is needed to linearize the energy modulation introduced during main RF acceleration, and at the same time still linearly compress the bunch length. Next the upper limit of the bunch compression ratio in a single stage is evaluated analytically. The analytical relations derived on choosing a proper initial bunch length as a function of main RF frequency are confirmed by numerical simulation. These simple limit provide rough estimations and may be beneficial for choosing bunch compression ratios in different stages of an FEL driver, especially in a first stage bunch compression where there is usually a harmonic RF linearization applied. It may also be useful in evaluating the possibility of low charge operation mode without any harmonic RF linearization, where a shorter initial bunch length can be achieved from the photoinjector.

Sun, Yipeng; /SLAC

2012-02-16T23:59:59.000Z

470

Integrating Online Compression to Accelerate Large-Scale Data Analytics Applications  

SciTech Connect (OSTI)

Abstract—With growing dataset sizes, and as computing cycles are increasing faster than storage and wide-area bandwidths, compression appears like a promising approach for improving the performance of large-scale data analytics applications. In this context, this paper makes the following contributions. First, we develop a new compression methodology, which exploits the similarities between spatial and/or temporal neighbors in a simulation dataset, and enables high compression ratios and low decompression costs. Second, we have developed a framework that can be used to incorporate a variety of compression and decompression algorithms. This framework also supports a simple API to allow integration with an existing application or data processing middleware. Once a compression algorithm is implemented, this framework can allow multi-threaded retrieval, multi-threaded data decompression, and use of informed prefetching and caching. By integrating this framework with a data-intensive middleware, we have applied our compression methodology and framework to three applications over two datasets, including a GCRM climate model dataset. We obtained an average compression ratio of 51.68%, and up to 53.27% improvement in execution time of data analysis applications.

Bicer, T.; Yin, Jian; Chiu, David; Agrawal, Gagan; Schuchardt, Karen L.

2013-05-19T23:59:59.000Z

471

Compressive strength, plastic flow properties, and surface frictional effects of 1100, 3003 and 6061 aluminum alloys  

SciTech Connect (OSTI)

The purpose of this study is to find aluminum alloys that are effective for use as wire vacuum seals in the 800MeV particle accelerator located at the Louis Anderson Meson Physics Facility (LAMPF) in Los Alamos, NM. Three alloys, Al 1100, Al 3003, and Al 6061, are investigated under uniaxial compression to determine stresses for a given height reduction from 0 to 70 percent, and to find plastic flow and surface interaction effects. Right-circular cylindrical specimens are compressed on-end (cylindrically) and radially (for modeling as compressed wire). Aluminum 1100 and 3003 alloys are compared for length to diameter ratios of 1 and 2 for both compression types, and are then compared to results of radial compression of annealed small diameter Al 1100 wire currently used at LAMPE. The specimens are also compressed between three different platen surfaces, polished steel, etched steel, and aluminum 6061-T6, to determine effects of friction. The Al 3003 alloy exhibits 20 to 25% lower stresses at all height reductions than Al 1100 for both cylindrical and radial compression.

Pinkerton, G.W.

1993-12-31T23:59:59.000Z

472

Adaptation of existing facilities to isentropic compression experiments  

SciTech Connect (OSTI)

We demonstrate that the established pulsed power infrastructure at the National High Magnetic Field Laboratory - Pulsed Field Facility (NHMFL-PFF) at the Los Alamos National Laboratory can be adapted to obtain high quality isentropic compression experiment (ICE) data on materials in extreme conditions of dynamic high pressure. Experiments utilized a single-turn magnet pulsed power system at the NHMFL-PFF that was originally designed to measure actinide samples in extremes of high magnetic field (to 300 Tesla). A simple modification to the single-turn magnet has converted it to a fast turnaround dynamic high pressure measurement system. This paper details the work done including important background details that indicate that much more can be accomplished with optimization of the load characteristics in terms of ultimate peak pressures. To match the rise time of the NHMFL capacitor bank ({approx}2 {mu}s versus {approx}0.5 {mu}s for the Sandia Z-machine) the sample dimensions can be relatively large, i.e., up to 5 mm thickness. The maximum stresses are {approx}50GPa (0.5 Mbar) at the maximum bank voltage (60 kV) and higher pressures may be possible if the sample is tamped. For the design and predictions of performance of the NHMFL-ICE experiment it is important to have good predictive models. A SPICE code simulation was chosen to model all aspects of the experiment, electrical and physical. To this end, accurate dynamic load models were developed to simulate the compression and expansion of the dynamic load at high pressures using shock physics principles. A series experiments have been performed which demonstrated the feasibility of the NHMFL-ICE technique. The results will be shown and discussed. The NHMFL-ICE technique is an excellent method for measuring equations of state (EOS) at megabar pressures. Because a complete EOS can be obtained in one experiment from zero to the peak pressure, and because many shots can be fired in one day, the technique promises to provide high quality EOS data at relatively low cost.

Tasker, Douglas G [Los Alamos National Laboratory; Mielke, Charles H [Los Alamos National Laboratory; Rodriguez, George [Los Alamos National Laboratory; Rickel, Dwight G [Los Alamos National Laboratory

2011-01-07T23:59:59.000Z

473

Confinement requirements for ohmic-compressive ignition of a Spheromak plasma  

SciTech Connect (OSTI)

The Moving Plasmoid Reactor (MPR) is an attractive alternative magnetic fusion scheme in which Spheromak plasmoids are envisioned to be formed, compressed, burned, and expanded as the plasmoids translate through a series of linear reactor modules. Although auxiliary heating of the plasmoids may be possible, the MPR scenario would be especially interesting if ohmic decay and compression alone is sufficient to heat the plasmoids to an ignition temperature. In the present work, we examine the transport conditions under which a Spheromak plasmoid can be expected to reach ignition via a combination of ohmic and compression heating.

Olson, R.E.; Miley, G.H.

1981-01-01T23:59:59.000Z

474

Electron Pulse Compression with a Practical Reflectron Design for Ultrafast Electron Diffraction  

E-Print Network [OSTI]

Ultrafast electron diffraction (UED) is a powerful method for studying time-resolved structural changes. Currently, space charge induced temporal broadening prevents obtaining high brightness electron pulses with sub-100 fs durations limiting the range of phenomena that can be studied with this technique. We review the state of the the art of UED in this respect and propose a practical design for reflectron based pulse compression which utilizes only electro-static optics and has a tunable temporal focal point. Our simulation shows that this scheme is capable of compressing an electron pulse containing 100,000 electrons with 60:1 temporal compression ratio.

Wang, Yihua

2013-01-01T23:59:59.000Z

475

Analytical Solutions for the Nonlinear Longitudinal Drift Compression (Expansion) of Intense Charged Particle Beams  

SciTech Connect (OSTI)

To achieve high focal spot intensities in heavy ion fusion, the ion beam must be compressed longitudinally by factors of ten to one hundred before it is focused onto the target. The longitudinal compression is achieved by imposing an initial velocity profile tilt on the drifting beam. In this paper, the problem of longitudinal drift compression of intense charged particle beams is solved analytically for the two important cases corresponding to a cold beam, and a pressure-dominated beam, using a one-dimensional warm-fluid model describing the longitudinal beam dynamics.

Edward A. Startsev; Ronald C. Davidson

2004-04-09T23:59:59.000Z

476

Apparatus for measuring tensile and compressive properties of solid materials at cryogenic temperatures  

DOE Patents [OSTI]

An apparatus for evaluating the tensile and compressive properties of material samples at very low or cryogenic temperatures employs a stationary frame and a dewar mounted below the frame. A pair of coaxial cylindrical tubes extend downward towards the bottom of the dewar. A compressive or tensile load is generated hydraulically and is transmitted by the inner tube to the material sample. The material sample is located near the bottom of the dewar in a liquid refrigerant bath. The apparatus employs a displacement measuring device, such as a linear variable differential transformer, to measure the deformation of the material sample relative to the amount of compressive or tensile force applied to the sample.

Gonczy, John D. (Oaklawn, IL); Markley, Finley W. (St. Charles, IL); McCaw, William R. (Burr Ridge, IL); Niemann, Ralph C. (Downers Grove, IL)

1992-01-01T23:59:59.000Z

477

Compressed sensing quantum process tomography for superconducting quantum gates  

E-Print Network [OSTI]

We apply the method of compressed sensing (CS) quantum process tomography (QPT) to characterize quantum gates based on superconducting Xmon and phase qubits. Using experimental data for a two-qubit controlled-Z gate, we obtain an estimate for the process matrix $\\chi$ with reasonably high fidelity compared to full QPT, but using a significantly reduced set of initial states and measurement configurations. We show that the CS method still works when the amount of used data is so small that the standard QPT would have an underdetermined system of equations. We also apply the CS method to the analysis of the three-qubit Toffoli gate with numerically added noise, and similarly show that the method works well for a substantially reduced set of data. For the CS calculations we use two different bases in which the process matrix $\\chi$ is approximately sparse, and show that the resulting estimates of the process matrices match each ther with reasonably high fidelity. For both two-qubit and three-qubit gates, we characterize the quantum process by not only its process matrix and fidelity, but also by the corresponding standard deviation, defined via variation of the state fidelity for different initial states.

Andrey V. Rodionov; Andrzej Veitia; R. Barends; J. Kelly; Daniel Sank; J. Wenner; John M. Martinis; Robert L. Kosut; Alexander N. Korotkov

2014-07-03T23:59:59.000Z

478

Compression part of Egan Hub facility`s expansion  

SciTech Connect (OSTI)

Egan Hub Partners, L.P. (EHP), a subsidiary of Market Hub Partners (MHP), is the owner and operator of the Egan Hub Partners gas storage facility located near the town of Evangeline in south Louisiana. Located on the Jennings salt dome, EHP provides high-deliverability (injection and/or withdrawal capabilities on demand) salt storage, giving its customers rapid response to market fluctuation and demand. In addition to long-term storage contracts, EHP offers natural gas hub services using interruptible storage entitlements and multiple pipeline interchange flexibility. Hub services include wheeling, parking, loaning and balancing. The EHP facility was put into service in September 1995. EHP just completed the installation of a fourth compressor unit. This is the second unit to be put in service at the facility this year and is identical to the previous one. Hanover Compression packaged both units which consist of a Caterpillar G-3616 engine (4,450 hp) and an Ariel JGC-6 compressor. The units are configured to accommodate the wide operating range encountered at a natural gas salt dome storage facility and are designed to operate with a suction range of 600--900 psi and a discharge range of 800--3,000 psi.

NONE

1997-11-01T23:59:59.000Z

479

Optimization of compression and storage requirements at hydrogen refueling stations.  

SciTech Connect (OSTI)

The transition to hydrogen-powered vehicles requires detailed technical and economic analyses of all aspects of hydrogen infrastructure, including refueling stations. The cost of such stations is a major contributor to the delivered cost of hydrogen. Hydrogen refueling stations require not only dispensers to transfer fuel onto a vehicle, but also an array of such ancillary equipment as a cascade charging system, storage vessels, compressors and/or pumps/evaporators. This paper provides detailed information on design requirements for gaseous and liquid hydrogen refueling stations and their associated capital and operating costs, which in turn impact hydrogen selling price at various levels of hydrogen demand. It summarizes an engineering economics approach which captures the effect of variations in station size, seasonal, daily and hourly demand, and alternative dispensing rates and pressures on station cost. Tradeoffs in the capacity of refueling station compressors, storage vessels, and the cascade charging system result in many possible configurations for the station. Total costs can be minimized by optimizing that configuration. Using a methodology to iterate among the costs of compression, storage and cascade charging, it was found that the optimum hourly capacity of the compressor is approximately twice the station's average hourly demand, and the optimum capacity of the cascade charging system is approximately 15% of the station's average daily demand. Further, for an hourly demand profile typical of today's gasoline stations, onsite hydrogen storage equivalent to at least 1/3 of the station's average daily demand is needed to accommodate peak demand.

Elgowainy, A.; Mintz, M.; Kelly, B.; Hooks, M.; Paster, M. (Energy Systems); (Nexant, Inc.); (TIAX LLC)

2008-01-01T23:59:59.000Z

480

Agreements --General/Regional 171 GENERAL/REGIONAL  

E-Print Network [OSTI]

; Armenia; Australia; Austria; Azerbaijan; Bangladesh; Belgium; Bolivia; Brazil; Bulgaria; Burkina Faso African convention on the conservation of nature and natural resources March 25, 1957 General Belgium

Wolf, Aaron

Note: This page contains sample records for the topic "luc general compression" 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.


481

OLEDS FOR GENERAL LIGHTING  

SciTech Connect (OSTI)

The goal of this program was to reduce the long term technical risks that were keeping the lighting industry from embracing and developing organic light-emitting diode (OLED) technology for general illumination. The specific goal was to develop OLEDs for lighting to the point where it was possible to demonstrate a large area white light panel with brightness and light quality comparable to a fluorescence source and with an efficacy comparable to that of an incandescent source. it was recognized that achieving this would require significant advances in three area: (1) the improvement of white light quality for illumination, (2) the improvement of OLED energy efficiency at high brightness, and (3) the development of cost-effective large area fabrication techniques. The program was organized such that, each year, a ''deliverable'' device would be fabricated which demonstrated progress in one or more of the three critical research areas. In the first year (2001), effort concentrated on developing an OLED capable of generating high illumination-quality white light. Ultimately, a down-conversion method where a blue OLED was coupled with various down-conversion layers was chosen. Various color and scattering models were developed to aid in material development and device optimization. The first year utilized this approach to deliver a 1 inch x 1 inch OLED with higher illumination-quality than available fluorescent sources. A picture of this device is shown and performance metrics are listed. To their knowledge, this was the first demonstration of true illumination-quality light from an OLED. During the second year, effort concentrated on developing a scalable approach to large area devices. A novel device architecture consisting of dividing the device area into smaller elements that are monolithically connected in series was developed. In the course of this development, it was realized that, in addition to being scalable, this approach made the device tolerant to the most common OLED defect--electrical shorts. This architecture enabled the fabrication of a 6 inch x 6 inch OLED deliverable for 2002. A picture of this deliverable is shown and the performance metrics are listed. At the time, this was the highest efficiency, highest lumen output illumination-quality OLED in existence. The third year effort concentrated on improving the fabrication yield of the 6 inch x 6 inch devices and improving the underlying blue device efficiency. An efficiency breakthrough was achieved through the invention of a new device structure such that now 15 lumen per watt devices could be fabricated. A 2 feet x 2 feet OLED panel consisting of sixteen 6 inch x 6 inch high efficiency devices tiled together was then fabricated. Pictures of this panel are shown with performance metrics listed. This panel met all project objectives and was the final deliverable for the project. It is now the highest efficiency, highest lumen output, illumination-quality OLED in existence.

Anil Duggal; Don Foust; Chris Heller; Bill Nealon; Larry Turner; Joe Shiang; Nick Baynes; Tim Butler; Nalin Patel

2004-02-29T23:59:59.000Z

482

Multiarray Signal Processing: Tensor decomposition meets compressed sensing Lek-Heng Lima  

E-Print Network [OSTI]

Multiarray Signal Processing: Tensor decomposition meets compressed sensing Lek-Heng Lima , Pierre ; Available online July 29, 2010. Presented by O. Macchi. Email addresses: lekheng@math.berkeley.edu (Lek-Heng

Paris-Sud XI, Université de

483

SeaOne Pascagoula, LLC- FE Dkt. No. 14-83-CGL (Compressed Gas Liquids)  

Broader source: Energy.gov [DOE]

The Office of Fossil Energy gives notice of receipt of an application filed on June 3, 2014, by SeaOne Pascagoula, LLC requesting long-term multi-contract authorization to export Compressed Gas...

484

Predicting the compressive strength of concrete by spectral bandwidth analysis of nondestructive acoustic measurements  

E-Print Network [OSTI]

with a hydraulic press according to the standard ASTM testing procedures and the compressive strength in pounds per square inch was recorded for each cylinder. This study ran the soundwaves through a set of nine Fast Fourier Transform Filters ranging...

Schneider, Hans Rainer

2002-01-01T23:59:59.000Z

485

Low Spring Index NiTi Coil Actuators for Use in Active Compression Garments  

E-Print Network [OSTI]

This paper describes the modeling, development, and testing of low spring index nickel titanium (NiTi) coil actuators designed for use in wearable compression garments, and presents a prototype tourniquet system using these ...

Holschuh, Bradley

486

Compressive sampling based MVDR spectrum Ying Wang , Ashish Pandharipande and Geert Leus  

E-Print Network [OSTI]

Compressive sampling based MVDR spectrum sensing Ying Wang , Ashish Pandharipande and Geert Leus Philips Research Europe, High Tech Campus, 5656 AE Eindhoven, The Netherlands Email: {ying.z.wang, ashish

Leus, Geert

487

Distributed Compressive Wide-Band Spectrum Ying Wang , Ashish Pandharipande , Yvan Lamelas Polo and Geert Leus  

E-Print Network [OSTI]

Distributed Compressive Wide-Band Spectrum Sensing Ying Wang , Ashish Pandharipande , Yvan Lamelas, The Netherlands Email: {ying.z.wang, ashish.p}@philips.com Faculty of EEMCS, Delft University of Technology

Leus, Geert

488

Beyond Leaks: Demand-side Strategies for Improving Compressed Air Efficiency  

E-Print Network [OSTI]

Staggering amounts of compressed air are wasted or misapplied in otherwise well run manufacturing facilities, often adding thousands of dollars in extra operating cost per year. The process of eliminating this expensive waste requires a thorough...

Howe, B.; Scales, B.

489

Compressed Air Audits: A Holistic Approach -Addressing the Air System as a Whole  

E-Print Network [OSTI]

energy savings. The quality and comprehensiveness of manufacturing facilities, and therefore audits, vary widely and it is important to consider experience. Compressed Air Technologies has audited nearly 200 manufacturing facilities since our inception...

Shaver, D.

2011-01-01T23:59:59.000Z

490

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

plan, formulate energy efficiency goals and adopt energyGO-102004-1926 [3] Energy Efficiency and Market Potential ofImproving Energy Efficiency of Compressed Air System Based

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

491

Effects of operating conditions, compression ratio, and gasoline reformate on SI engine knock limits  

E-Print Network [OSTI]

A set of experiments was performed to investigate the effects of air-fuel ratio, inlet boost pressure, hydrogen rich fuel reformate, and compression ratio on engine knock behavior. For each condition the effect of spark ...

Gerty, Michael D

2005-01-01T23:59:59.000Z

492

Comparative Analysis of CFD ?P vs. Measured ?P for Compressed Flexible Ducts  

E-Print Network [OSTI]

Reproduced with permission of the copyright owner. Further reproduction prohibited without permission. Comparative Analysis of CFD [Delta]P vs. Measured [Delta]P for Compressed Flexible Ducts Ugursal, Ahmet;Culp, Charles ASHRAE Transactions; 2007...

Ugursal, A.; Culp, C.H.

493

A METHOD FOR STATIC-FIELD COMPRESSION IN AN ELECTRON-RING ACCELERATOR  

E-Print Network [OSTI]

integrity and movement of the ring through the compressor is controlled by a small traveling magnetic well.well, transverse focusing ca~ be main- tained throughout the compression process, and the integrity

Laslett, L.Jackson

2008-01-01T23:59:59.000Z

494

Control and Optimization of Vapor Compression Cycles Using Recursive Least Squares Estimation  

E-Print Network [OSTI]

Vapor compression cycles are the primary method by which refrigeration and air-conditioning systems operate, and thus constitute a significant portion of commercial and residential building energy consumption. This thesis presents a data...

Rani, Avinash

2012-10-19T23:59:59.000Z

495

Simulation Of Microstructural Evolution Of Cross-Linked Templated Silica-Aerogels Under Compression.  

E-Print Network [OSTI]

??The evolution of a cross-linked templated aerogel mesostructure under compression was simulated using the Material Point Method (MPM) on a model generated from X-ray nano-computed… (more)

Fu, Boshen

2009-01-01T23:59:59.000Z

496

Reliability Analysis of Settlement Using an Updated Probabilistic Unified Soil Compression Model  

E-Print Network [OSTI]

data from a site on the Venice Lagoon using a Bayesian approach. The model to estimate settlement was developed based on this probabilistic soil compression model and is unbiased in nature. Using this model, unbiased settlement estimates were obtained...

Ambrose, Avery

2012-02-14T23:59:59.000Z

497

Comparison and Validation of Compressible Flow Simulations of Laser-Induced Cavitation  

E-Print Network [OSTI]

Comparison and Validation of Compressible Flow Simulations of Laser-Induced Cavitation Bubbles)). The validation is performed for the case of laser-induced cavitation bubbles collapsing in an infinite medium

498

Soft pneumatic artificial muscles with low threshold pressures for a cardiac compression device  

E-Print Network [OSTI]

In this paper, I present the design, fabrication and characterization of fully soft pneumatic artificial muscles (PAMs) with low threshold pressures that are intended for direct cardiac compression (DCC). McKibben type ...

Obiajulu, Steven (Steven C.)

2013-01-01T23:59:59.000Z

499

Improving Energy Efficiency of Compressed Air System Based on System Audit  

E-Print Network [OSTI]

energy efficiency goals and adopt energy conservation measures. Application of the types of compressed air best practicesEnergy Efficiency and Market Potential of Electric Motor System in China. China Machine Pressu re, [4] Best Practices

Shanghai, Hongbo Qin; McKane, Aimee

2008-01-01T23:59:59.000Z

500

New experimental platform to study high density laser-compressed matter  

SciTech Connect (OSTI)

We have developed a new experimental platform at the Linac Coherent Light Source (LCLS) which combines simultaneous angularly and spectrally resolved x-ray scattering measurements. This technique offers a new insights on the structural and thermodynamic properties of warm dense matter. The < 50 fs temporal duration of the x-ray pulse provides near instantaneous snapshots of the dynamics of the compression. We present a proof of principle experiment for this platform to characterize a shock-compressed plastic foil. We observe the disappearance of the plastic semi-crystal structure and the formation of a compressed liquid ion-ion correlation peak. The plasma parameters of shock-compressed plastic can be measured as well, but requires an averaging over a few tens of shots.

Gauthier, M., E-mail: maxence.gauthier@stanford.edu; Fletcher, L. B.; Galtier, E.; Gamboa, E. J.; Granados, E.; Hastings, J. B.; Heimann, P.; Lee, H. J.; Nagler, B.; Schropp, A.; Falcone, R.; Glenzer, S. H. [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States); Ravasio, A. [SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States); LULI, Ecole Polytechnique, Palaiseau (France); Gleason, A. [Department of Geological and Environmental Sciences, Stanford University, Menlo Park, California 94025 (United States); Döppner, T.; LePape, S.; Ma, T.; Pak, A. [Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States); MacDonald, M. J. [Atmospheric, Oceanic, and Space Science Department, University of Michigan, Ann Arbor, Michigan 48109 (United States); Ali, S. [Physics Department, University of California Berkeley, Berkeley, California 94709 (United States); and others

2014-11-15T23:59:59.000Z