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Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

CX-004923: Categorical Exclusion Determination | Department of Energy  

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

23: Categorical Exclusion Determination 23: Categorical Exclusion Determination CX-004923: Categorical Exclusion Determination Battelle-Cascade Reverse Osmosis and the Reverse Absorption Osmosis Cycle CX(s) Applied: B3.6 Date: 08/04/2010 Location(s): Columbus, Ohio Office(s): Advanced Research Projects Agency - Energy Funding will support laboratory and bench scale research and development on a novel reverse osmosis process for use in commercial cooling applications. The proposed work is consistent with the goal of Building Energy Efficiency Through Innovative Thermodevices: the development of energy efficient cooling technologies and air conditioners for buildings, to save energy and reduce greenhouse gas emissions. Proposed work consists entirely of research, development, and demonstration and proof-of-concept work to be

2

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Program or Field Office: Advanced Research Projects Agency - Program or Field Office: Advanced Research Projects Agency - Energy Proiect Title: 0289-1628 Battelle - Cascade Reverse Osmosis and the Reverse Absorption Osmosis Cycle Location: Ohio Proposed Action or Project Description: American Recovery and Reinvestment Act: Funding will support laboratory and bench scale research and development on a novel reverse osmosis process for use in commercial cooling applications. The proposed work is consistent with the goal of BEETIT: the development of energy efficient cooling technologies and air conditioners for buildings, to save energy and reduce GHG emissions. Proposed work consists entirely of RD&D and proof-of-concept work to be completed in Battelle's Thermal Sciences Laboratory in Columbus, Ohio.

3

Implementation of Reverse Logistics in the Determination and Formulation of Product End-of-Life Strategies  

E-Print Network [OSTI]

1 Implementation of Reverse Logistics in the Determination and Formulation of Product End-of-life strategies, reverse logistics, product design. 1. INTRODUCTION Traditionally, product design and #12;2 government have to manage reverse logistics according to the existing end-of-life options

Aristomenis, Antoniadis

4

Reversible jump Markov chain Monte Carlo computation and Bayesian model determination  

E-Print Network [OSTI]

Markov chain Monte Carlo methods for Bayesian computation have until recently been restricted to problems where the joint distribution of all variables has a density with respect to some xed standard underlying measure. They have therefore not been available for application to Bayesian model determination, where the dimensionality of the parameter vector is typically not xed. This article proposes a new framework for the construction of reversible Markov chain samplers that jump between parameter subspaces of di ering dimensionality, which is exible and entirely constructive. It should therefore have wide applicability in model determination problems. The methodology is illustrated with applications to multiple change-point analysis in one and two dimensions, and toaBayesian comparison of binomial experiments.

Peter J. Green

1995-01-01T23:59:59.000Z

5

Reverse osmosis  

Science Journals Connector (OSTI)

Osmosis is a phenomenon which regulates many biological ... in explaining the biological functions which depend on osmosis, but also in creating conditions for reversing it known as ‘reverse osmosis’. Reverse osmosis

Sudhakar M Rao

2007-05-01T23:59:59.000Z

6

REVERSE OSMOSIS  

Science Journals Connector (OSTI)

REVERSE OSMOSIS ... Concentration of Apple Juice by Reverse Osmosis at Laboratory and Pilot-Plant Scales ... Concentration of Apple Juice by Reverse Osmosis at Laboratory and Pilot-Plant Scales ...

S. Sourirajan; J. P. Agrawal

1969-01-01T23:59:59.000Z

7

Reverse Osmosis  

Science Journals Connector (OSTI)

Osmosis is a phenomenon which regulates many biological ... in explaining the biological functions which depend on osmosis, but also in creating conditions for reversing it known as ‘reverse osmosis’. Reverse osmosis

Sudhakar M. Rao

2011-12-01T23:59:59.000Z

8

Reverse Osmosis  

Science Journals Connector (OSTI)

This chapter provides a survey of reverse osmosis science and technology. It begins with a ... concludes with an account of the principal current reverse osmosis applications.

H. K. Lonsdale

1986-01-01T23:59:59.000Z

9

Rapid Determination of Bile Acids in Bile from Various Mammals by Reversed-Phase Ultra-Fast Liquid Chromatography  

Science Journals Connector (OSTI)

......Sultana N. , Arayne M.S., Khan M.M., Saleem D.M., Mirza A.Z. Determination of tryptophan in raw materials, rat brain and human plasma by RP-HPLC technique. Journal of Chromatographic Science (2012) 50:531-537. 24 Hofmann A.F......

Gu Leng Ri Si; Peng Yao; Luwen Shi

2014-12-01T23:59:59.000Z

10

Page not found | Department of Energy  

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

01 - 4910 of 29,416 results. 01 - 4910 of 29,416 results. Download CX-004924: Categorical Exclusion Determination lnfinia - Stirling Air Conditioner (StAC) for Compact Cooling CX(s) Applied: B3.6 Date: 08/05/2010 Location(s): Kennewick, Washington Office(s): Advanced Research Projects Agency - Energy http://energy.gov/nepa/downloads/cx-004924-categorical-exclusion-determination Download CX-004952: Categorical Exclusion Determination General Atomics -Soluble Lead Flow Battery Technology CX(s) Applied: B3.6 Date: 08/05/2010 Location(s): San Diego, California Office(s): Advanced Research Projects Agency - Energy http://energy.gov/nepa/downloads/cx-004952-categorical-exclusion-determination Download CX-004923: Categorical Exclusion Determination Battelle-Cascade Reverse Osmosis and the Reverse Absorption Osmosis Cycle

11

Simultaneous determination of amantadine, rimantadine and memantine in chicken muscle using multi-walled carbon nanotubes as a reversed-dispersive solid phase extraction sorbent  

Science Journals Connector (OSTI)

Abstract A modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method using multi-walled carbon nanotubes (MWCNTs) as a reversed-dispersive solid phase extraction (r-dSPE) material combined with ultra-high liquid chromatography tandem mass spectrometry (UHPLC–MS/MS) was developed for the simultaneous determination of amantadine, rimantadine and memantine in chicken muscle. The satisfactory separation of isomers (rimantadine and memantine) was obtained on an Acquity BEH C18 column (2.1 mm × 100 mm, 1.7 ?m) after optimization of mobile phase composition, column temperature and flow rate. The method involved an acetonitrile-based sample preparation and a dSPE clean-up procedure with \\{MWCNTs\\} material. Variations in the type and amount of MWCNTs, the pH value of the extract, the extraction time for MWCNTs, and the type of eluent were used to determine the optimal parameters for increasing the sample throughput and the sensitivity. The samples were quantified using amantadine-D15, rimantadine-D4 and memantine-D6 as the internal standards. Under the optimized conditions, recoveries of 96.8–104.6% and the values of coefficient of variation (CV) of 3.8–6.4% were obtained for the three drugs in chicken muscle at three spiked levels (0.5, 1.0 and 1.5 ?g/kg), and the decision limits (CC?) and detection capabilities (CC?) were 0.15–0.20 ?g/kg and 0.20–0.25 ?g/kg, respectively. Positive results were obtained from local supermarket using this method, and the concentrations obtained from the newly developed method compared well to the previously reported method.

Yin-Liang Wu; Ruo-Xia Chen; Yi Xue; Ting Yang; Jian Zhao; Yong Zhu

2014-01-01T23:59:59.000Z

12

What Determined the Great Cap Rate Compression of 2000–2007, and the Dramatic Reversal During the 2008–2009 Financial Crisis?  

E-Print Network [OSTI]

In this paper we revisit the many studies that have attempted to explain the determinants of commercial real estate capitalization rates. We introduce two new innovations. First we are able to incorporate two macroeconomic ...

Chervachidze, Serguei

13

Reverse Osmosis and Ultrafiltration  

Science Journals Connector (OSTI)

Economic comparisons indicate reverse osmosis to be more cost effective than distillation ... membranes, leading to a wider scope of reverse osmosis applications, including the purification of used water ... tran...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

14

Reversible logic for supercomputing  

Science Journals Connector (OSTI)

This paper is about making reversible logic a reality for supercomputing. Reversible logic offers a way to exceed certain basic limits on the performance of computers, yet a powerful case will have to be made to justify its substantial development expense. ... Keywords: applications modeling, climate change global warming, computer architecture, quantum dot cellular automata, reversible logic, supercomputing

Erik P. DeBenedictis

2005-05-01T23:59:59.000Z

15

Flow Relationships in Reverse Osmosis  

Science Journals Connector (OSTI)

Flow Relationships in Reverse Osmosis ... Effects of Hydrolysis on Cellulose Acetate Reverse-Osmosis Transport Coefficients ... Effects of Hydrolysis on Cellulose Acetate Reverse-Osmosis Transport Coefficients ...

Ulrich Merten

1963-08-01T23:59:59.000Z

16

Reversible Acid Gas Capture  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2009-08-01T23:59:59.000Z

17

Reversible Acid Gas Capture  

ScienceCinema (OSTI)

Pacific Northwest National Laboratory scientist David Heldebrant demonstrates how a new process called reversible acid gas capture works to pull carbon dioxide out of power plant emissions.

Dave Heldebrant

2012-12-31T23:59:59.000Z

18

Synthesis of reversible sequential elements  

Science Journals Connector (OSTI)

To construct a reversible sequential circuit, reversible sequential elements are required. This work presents novel designs of reversible sequential elements such as the D latch, JK latch, and T latch. Based on these reversible latches, we construct ... Keywords: Reversible logic, sequential circuits, sequential elements

Min-Lun Chuang; Chun-Yao Wang

2008-01-01T23:59:59.000Z

19

All Skate, Now Reverse  

E-Print Network [OSTI]

All Skate, Now Reverse is a memoir that consists of personal narratives that are set in or are about my growing up in Nebraska. It is about life and its defining moments, and the collection summons up childhood epiphanies ...

Glover, Angela l.

2008-07-28T23:59:59.000Z

20

Reverse Osmosis Process  

Science Journals Connector (OSTI)

An empirical modeling method has been suggested for the reverse osmosis process. Least-square fitting of data to a third-order’ polynomial has resulted in the accurate modeling of Du Pont’s hollow fiber B-10 m...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Reverse Osmosis Membranes  

Science Journals Connector (OSTI)

A bibliography of citations from the U.S. National Technical Information Service data base with 183 abstracts on membranes for reverse osmosis desalination, electro-dialysis desalination and other osmotic desa...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

22

Reversible collisionless magnetic reconnection  

SciTech Connect (OSTI)

Reversible magnetic reconnection is demonstrated for the first time by means of gyrokinetic numerical simulations of a collisionless magnetized plasma. Growth of a current-driven instability in a sheared magnetic field is accompanied by magnetic reconnection due to electron inertia effects. Following the instability growth, the collisionless reconnection is accelerated with development of a cross-shaped structure of current density, and then all field lines are reconnected. The fully reconnected state is followed by the secondary reconnection resulting in a weakly turbulent state. A time-reversed simulation starting from the turbulent state manifests that the collisionless reconnection process proceeds inversely leading to the initial state. During the reversed reconnection, the kinetic energy is reconverted into the original magnetic field energy. In order to understand the stability of reversed process, an external perturbation is added to the fully reconnected state, and it is found that the accelerated reconnection is reversible when the deviation of the E × B streamlines due to the perturbation is comparable with or smaller than a current layer width.

Ishizawa, A.; Watanabe, T.-H. [National Institute for Fusion Science, Toki 509-5292 (Japan)] [National Institute for Fusion Science, Toki 509-5292 (Japan)

2013-10-15T23:59:59.000Z

23

Time reversal communication system  

DOE Patents [OSTI]

A system of transmitting a signal through a channel medium comprises digitizing the signal, time-reversing the digitized signal, and transmitting the signal through the channel medium. The channel medium may be air, earth, water, tissue, metal, and/or non-metal.

Candy, James V. (Danville, CA); Meyer, Alan W. (Danville, CA)

2008-12-02T23:59:59.000Z

24

Reverse Coherent Information  

Science Journals Connector (OSTI)

In this Letter we define a family of entanglement distribution protocols assisted by feedback classical communication that gives an operational interpretation to reverse coherent information, i.e., the symmetric counterpart of the well-known coherent information. This leads to the definition of a new entanglement distribution capacity that exceeds the unassisted capacity for some interesting channels.

Raúl García-Patrón; Stefano Pirandola; Seth Lloyd; Jeffrey H. Shapiro

2009-05-29T23:59:59.000Z

25

Reverse Osmosis Optimization  

Broader source: Energy.gov [DOE]

Report assesses techniques for optimizing reverse osmosis (RO) systems to increase RO system performance and water efficiency. It provides a general description of RO systems, the influence of RO systems on water use, and key areas where RO systems can be optimized to reduce water and energy consumption.

26

Sustained Self-Reversal in the Reversed-Field Pinch  

Science Journals Connector (OSTI)

Spontaneous reversal of the toroidal field in a reversed-field pinch as a result of low-? (small J?J?) resisitive kink mode activity is investigated with use of a three-dimensional magnetohydrodynamics code. Helical and three-dimensional steady reversed states are obtained. In three dimensions quasisteady fluctuating states are observed above a critical value of the pinch parameter ?.

A. Y. Aydemir and D. C. Barnes

1984-03-12T23:59:59.000Z

27

Colloidal fouling of reverse osmosis membranes  

E-Print Network [OSTI]

the rate of fouling of reverse osmosis membranes treating32, 127-135. fouling of reverse osmosis membranes." Buros,Colloidal fouling of reverse osmosis membranes." J. Colloid

Elimelech, Menachem

1994-01-01T23:59:59.000Z

28

Reversible Fuel Cells Workshop | Department of Energy  

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

Reversible Fuel Cells Workshop Reversible Fuel Cells Workshop The National Renewable Energy Laboratory hosted a workshop addressing the current state-of-the-art of reversible fuel...

29

Reversal bending fatigue testing  

SciTech Connect (OSTI)

Embodiments for apparatuses for testing reversal bending fatigue in an elongated beam are disclosed. Embodiments are configured to be coupled to first and second end portions of the beam and to apply a bending moment to the beam and create a pure bending condition in an intermediate portion of the beam. Embodiments are further configured to cyclically alternate the direction of the bending moment applied to the beam such that the intermediate portion of the beam cyclically bends in opposite directions in a pure bending condition.

Wang, Jy-An John; Wang, Hong; Tan, Ting

2014-10-21T23:59:59.000Z

30

OHA Case Reversed  

Broader source: Energy.gov [DOE]

A final determination was made by the Department of Energy Headquarters Appeal Panel to restore the individual's DOE access authorization.

31

Reverse slapper detonator  

DOE Patents [OSTI]

A reverse slapper detonator (70), and methodology related thereto, are provided. The detonator (70) is adapted to be driven by a pulse of electric power from an external source (80). A conductor (20) is disposed along the top (14), side (18), and bottom (16) surfaces of a sheetlike insulator (12). Part of the conductor (20) comprises a bridge (28), and an aperture (30) is positioned within the conductor (20), with the bridge (28) and the aperture (30) located on opposite sides of the insulator (12). A barrel (40) and related explosive charge (50) are positioned adjacent to and in alignment with the aperture (30), and the bridge (28) is buttressed with a backing layer (60). When the electric power pulse vaporizes the bridge (28), a portion of the insulator (12) is propelled through the aperture (30) and barrel (40), and against the explosive charge (50), thereby detonating it.

Weingart, Richard C. (Livermore, CA)

1990-01-01T23:59:59.000Z

32

Reverse Osmosis Optimization  

SciTech Connect (OSTI)

This technology evaluation was prepared by Pacific Northwest National Laboratory on behalf of the U.S. Department of Energy’s Federal Energy Management Program (FEMP). ¬The technology evaluation assesses techniques for optimizing reverse osmosis (RO) systems to increase RO system performance and water efficiency. This evaluation provides a general description of RO systems, the influence of RO systems on water use, and key areas where RO systems can be optimized to reduce water and energy consumption. The evaluation is intended to help facility managers at Federal sites understand the basic concepts of the RO process and system optimization options, enabling them to make informed decisions during the system design process for either new projects or recommissioning of existing equipment. This evaluation is focused on commercial-sized RO systems generally treating more than 80 gallons per hour.¬

McMordie Stoughton, Kate; Duan, Xiaoli; Wendel, Emily M.

2013-08-26T23:59:59.000Z

33

Properly apply reverse osmosis  

SciTech Connect (OSTI)

Reverse osmosis (RO) is a water purification technique used to reduce the loading of dissolved solids in solution. The popularity of RO for treating boiler feedwater is growing because of the rising cost of ion-exchange-based demineralization as well as safety concerns associated with handling acid and caustic. A properly designed and operated RO-based boiler-feedwater-treatment system can reduce the load to, and costs associated with, ion exchange demineralization. This article discusses RO feedwater quality recommendations, pretreatment techniques, and system monitoring necessary to achieve optimum RO system performance in the most cost-effective manner. Regardless of the application--whether it is the treatment of boiler feedwater, industrial wastewater, or process water--the approach to pretreatment and the other design and operating guidance offered here remains the same.

Kucera, J.

1997-02-01T23:59:59.000Z

34

Flow reversal power limit for the HFBR  

SciTech Connect (OSTI)

The High Flux Beam Reactor (HFBR) is a pressurized heavy water moderated and cooled research reactor that began operation at 40 MW. The reactor was subsequently upgraded to 60 MW and operated at that level for several years. The reactor undergoes a buoyancy-driven reversal of flow in the reactor core following certain postulated accidents. Questions which were raised about the afterheat removal capability during the flow reversal transition led to a reactor shutdown and subsequent resumption of operation at a reduced power of 30 MW. An experimental and analytical program to address these questions is described in this report. The experiments were single channel flow reversal tests under a range of conditions. The analytical phase involved simulations of the tests to benchmark the physical models and development of a criterion for dryout. The criterion is then used in simulations of reactor accidents to determine a safe operating power level. It is concluded that the limit on the HFBR operating power with respect to the issue of flow reversal is in excess of 60 MW. Direct use of the experimental results and an understanding of the governing phenomenology supports this conclusion.

Cheng, L.Y.; Tichler, P.R.

1997-01-01T23:59:59.000Z

35

Sandia National Laboratories: reverse osmosis  

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

reverse osmosis ECIS-UNM: Biomimetic Membranes for Water Purification On February 20, 2013, in Advanced Materials Laboratory, Energy Efficiency, Facilities, Global Climate &...

36

Reverse osmosis treatment to remove inorganic contaminants from drinking water  

SciTech Connect (OSTI)

The purpose of the research project was to determine the removal of inorganic contaminants from drinking water using several state-of-the-art reverse osmosis membrane elements. A small 5-KGPD reverse osmosis system was utilized and five different membrane elements were studied individually with the specific inorganic contaminants added to several natural Florida ground waters. Removal data were also collected on naturally occurring substances.

Huxstep, M.R.; Sorg, T.J.

1987-12-01T23:59:59.000Z

37

Reversible micromachining locator  

DOE Patents [OSTI]

This invention provides a device which includes a locator, a kinematic mount positioned on a conventional tooling machine, a part carrier disposed on the locator and a retainer ring. The locator has disposed therein a plurality of steel balls, placed in an equidistant position circumferentially around the locator. The kinematic mount includes a plurality of magnets which are in registry with the steel balls on the locator. In operation, a blank part to be machined is placed between a surface of a locator and the retainer ring (fitting within the part carrier). When the locator (with a blank part to be machined) is coupled to the kinematic mount, the part is thus exposed for the desired machining process. Because the locator is removably attachable to the kinematic mount, it can easily be removed from the mount, reversed, and reinserted onto the mount for additional machining. Further, the locator can likewise be removed from the mount and placed onto another tooling machine having a properly aligned kinematic mount. Because of the unique design and use of magnetic forces of the present invention, positioning errors of less than 0.25 micrometer for each machining process can be achieved. 7 figs.

Salzer, L.J.; Foreman, L.R.

1999-08-31T23:59:59.000Z

38

Modelling Reverse Osmosis  

Science Journals Connector (OSTI)

After a brief presentation of the principal kinetic and thermodynamic aspects of the theory of reverse osmosis, the present review examines various physicochemical mechanisms of the selectivity of membranes with respect to electrolyte solutions: the electrochemical mechanism, related to the charge of the pore surface; the dielectric exclusion of ions, due to image forces; and the structural mechanism, due to the change in the properties of water in fine hydrophilic pores. Methods for calculating the changes in the standard chemical potentials of ions on entering the membrane phase, and the effects of the Donnan exclusion of ions with allowance for the different charge of the membrane have been described. It has been concluded that it is appropriate to use charged membranes to separate electrolyte solutions at low concentrations. The problem of the transport of solutions through the fine pores of membranes has been formulated, taking account of the equilibrium distribution coefficients of the ions, their mobility, the charge of the membrane, and the phenomenon of concentration polarisation. Routes to the further development of the theory as applied to membranes of different types, different compositions, and solution concentrations have been discussed. The bibliography contains 84 references.

S S Dukhin; Nikolai V Churaev; V N Shilov; Viktor M Starov

1988-01-01T23:59:59.000Z

39

Reverse osmosis reverses conventional wisdom with Superfund cleanup success  

SciTech Connect (OSTI)

Although widely recognized as the most efficient means of water purification, reverse osmosis has not been considered effective for remediating hazardous wastewater. Scaling and fouling, which can cause overruns and downtime, and require membrane replacement, have inhibited success in high-volume wastewater applications. Despite this background, a reverse osmosis technology developed in Europe recently was used successfully to treat large volumes of contaminated water at a major Superfund site in Texas. The technology's success there may increase the chances for reverse osmosis to find wider use in future cleanups and other waste treatment applications.

Collins, M. (French Ltd. Task Group, Crosby, TX (United States)); Miller, K. (Rochem Environmental Inc., Houston, TX (United States))

1994-09-01T23:59:59.000Z

40

Determination of the arrhenius parameters for Si{sub 2}H{sub 6} {l_reversible} SiH{sub 4} + SiH{sub 2} and {Delta}H{degrees} {sub f}(SiH{sub 2}) by RRKM analysis of forward and reverse reaction rate data  

SciTech Connect (OSTI)

RRKM theory is used to generate good estimates of the high-pressure Arrhenius parameters for the thermal decomposition of disilane. The heat of formation of SiH{sub 2} is determined by this process to be 64.4 +- 1.0 kcal/mol.

Moffat, H.K.; Jensen, K.F.; Carr, R.W. [Univ. of Minnesota, Minneapolis, MN (United States)

1992-09-17T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Observations on Buoyant Convection in Reverse Osmosis  

Science Journals Connector (OSTI)

Observations on Buoyant Convection in Reverse Osmosis ... Buoyancy Effects in Dead-End Reverse Osmosis:? Visualization by Holographic Interferometry ... Buoyancy Effects in Dead-End Reverse Osmosis:? Visualization by Holographic Interferometry ...

Terry J. Hendricks; Jean F. Macquin; Forman A. Williams

1972-05-01T23:59:59.000Z

42

Reversible concentric ring microfluidic interconnects  

E-Print Network [OSTI]

A reversible, Chip-to-Chip microfluidic interconnect was designed for use in high temperature, high pressure applications such as chemical microreactor systems. The interconnect uses two sets of concentric, interlocking ...

Thompson, Mary Kathryn, 1980-

2004-01-01T23:59:59.000Z

43

Microporous glasses for reverse osmosis  

Science Journals Connector (OSTI)

The preparation, heat-treatment and leaching of phase separable borosilicate glasses which are of interest as possible semipermeable membranes for reverse osmosis applications are described. It is shown that ... ...

P. W. McMillan; C. E. Matthews

1976-01-01T23:59:59.000Z

44

Reversible Dehydrogenation of Magnesium Borohydride to Magnesium...  

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

Reversible Dehydrogenation of Magnesium Borohydride to Magnesium Triborane in the Solid State Under Moderate Conditions. Reversible Dehydrogenation of Magnesium Borohydride to...

45

Hollow-Fiber Reverse Osmosis Membranes  

Science Journals Connector (OSTI)

Hollow-fiber membranes for reverse osmosis desalination are typically of the dense wall ... compact modules and further improve the economics of reverse osmosis desalination.

Mark E. Cohen; Michael A. Grable; Billy M. Riggleman

1972-01-01T23:59:59.000Z

46

Reversal modes in magnetic nanotubes  

E-Print Network [OSTI]

The magnetic switching of ferromagnetic nanotubes is investigated as a function of their geometry. Two independent methods are used: Numerical simulations and analytical calculations. It is found that for long tubes the reversal of magnetization is achieved by two mechanism: The propagation of a transverse or a vortex domain wall depending on the internal and external radii of the tube.

P. Landeros; S. Allende; J. Escrig; E. Salcedo; D. Altbir; E. E. Vogel

2006-11-08T23:59:59.000Z

47

Reverse engineering the human brain  

Science Journals Connector (OSTI)

...Thompson Reverse engineering the human brain Vincent Walsh Department of Experimental...can be used to temporarily prevent the brain from carrying out some of its normal functions...outline some of the advances in understanding brain function made by using TMS, and, in particular...

2000-01-01T23:59:59.000Z

48

Cosmological Significance of Time Reversal  

Science Journals Connector (OSTI)

... reversal at nearly the same time, that time being coincident with the occurrence of the Schwarzschild singularity, that is, the point at which the limiting radius, R = GM/ ... increases it would seem that a phenomenon not dissimilar to the spherical gravitational collapse of Schwarzschild will inevitably commence. This phenomenon depends on the relative velocity, and thus the position ...

KARY MULLIS

1968-05-18T23:59:59.000Z

49

Parity and time-reversal non-conservation in atoms  

SciTech Connect (OSTI)

We examine the implications of parity and time-reversal non-conservation for atomic physics. We conclude that a determination of Q/sub W//N to 10% would give an indirect determination of M/sub Z/ competitive with that available from high-energy physics, limits on the electric dipole moments of neutrons and electrons give non-trivial constraints on model building of CP non-conservation.

Lynn, B.W.

1984-08-01T23:59:59.000Z

50

Concentrating Fruit Juices by Reverse Osmosis  

Science Journals Connector (OSTI)

The difference between reverse osmosis and ultrafiltration lies principally in the retention ... able to retain protein-sized molecules, whereas reverse osmosis membranes retain lower molecular weight solutes suc...

R. L. Merson; G. Paredes; D. B. Hosaka

1980-01-01T23:59:59.000Z

51

Reversals  

Science Journals Connector (OSTI)

By the fall of 1996, a few months before Jim Hall made the case against the Boeing 737 in his long letter to the...

Gerry Byrne

2002-01-01T23:59:59.000Z

52

Reverse engineering of integrated circuits  

DOE Patents [OSTI]

Software and a method therein to analyze circuits. The software comprises several tools, each of which perform particular functions in the Reverse Engineering process. The analyst, through a standard interface, directs each tool to the portion of the task to which it is most well suited, rendering previously intractable problems solvable. The tools are generally used iteratively to produce a successively more abstract picture of a circuit, about which incomplete a priori knowledge exists.

Chisholm, Gregory H. (Shorewood, IL); Eckmann, Steven T. (Colorado Springs, CO); Lain, Christopher M. (Pittsburgh, PA); Veroff, Robert L. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

53

Reversible Seeding in Storage Rings  

SciTech Connect (OSTI)

We propose to generate steady-state microbunching in a storage ring with a reversible seeding scheme. High gain harmonic generation (HGHG) and echo-enabled harmonic generation (EEHG) are two promising methods for microbunching linac electron beams. Because both schemes increase the energy spread of the seeded beam, they cannot drive a coherent radiator turn-by-turn in a storage ring. However, reversing the seeding process following the radiator minimizes the impact on the electron beam and may allow coherent radiation at or near the storage ring repetition rate. In this paper we describe the general idea and outline a proof-of-principle experiment. Electron storage rings can drive high average power light sources, and free-electron lasers (FELs) are now producing coherent light sources of unprecedented peak brightness While there is active research towards high repetition rate FELs (for example, using energy recovery linacs), at present there are still no convenient accelerator-based sources of high repetition rate, coherent radiation. As an alternative avenue, we recently proposed to establish steady-state microbunching (SSMB) in a storage ring. By maintaining steady-state coherent microbunching at one point in the storage ring, the beam generates coherent radiation at or close to the repetition rate of the storage ring. In this paper, we propose a method of generating a microbunched beam in a storage ring by using reversible versions of linac seeding schemes.

Ratner, Daniel; Chao, Alex; /SLAC

2011-12-14T23:59:59.000Z

54

Characterization of aircraft noise during thrust reverser engagement  

Science Journals Connector (OSTI)

Airport noise impact on communities has been an area of considerable study. However it has been determined that thrust reverser engagement is an area requiring further research. This paper presents findings on thrust reverser from a noise study done at Washington?Dulles International Airport (IAD) in October of 2004. Previous studies have found that high levels of acoustic energy in commercial aircraft during takeoff are contained below 300 Hz [Sharp Ben H. Guovich Yuri A. and Albee William W. ‘‘Status of Low?Frequency Aircraft Noise Research and Mitigation ’’ Wyle Report WR 01?21 San Francisco September 2001]. Preliminary analysis of thrust reverser signatures indicates similar findings. A categorization of aircraft noise during thrust reverser engagement is given and looks at factors that may affect the noise characteristics. Some of these factors include: plane type engine type and thrust ratings. In addition a brief analysis of frequency weightings of the Equivalent Sound Level (Leq) and Sound Exposure Level (SEL) metrics and their application to thrust reverser noise is discussed. [Work supported by the Federal Aviation Administration.

2005-01-01T23:59:59.000Z

55

The Carlson-Simpson Lemma in Reverse Mathematics  

E-Print Network [OSTI]

6.3 Reverse Mathematicswords . . . . . 1.4 Reverse Mathematics diagrams Miller-1.1 Reverse Mathematics . . . . . . 1.2 The Dual Ramsey

Erhard, Julia Christina

2013-01-01T23:59:59.000Z

56

Reversible Fuel Cells Workshop Summary Report | Department of...  

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

Reversible Fuel Cells Workshop Summary Report Reversible Fuel Cells Workshop Summary Report Summary and presentations from the NREL Reversible Fuel Cells Workshop held April 19,...

57

A reverse osmosis treatment process for produced water: optimization, process control, and renewable energy application  

E-Print Network [OSTI]

resources (wind and solar) are analyzed as potential power sources for the process, and an overview of reverse osmosis membrane fouling is presented. A computer model of the process was created using a dynamic simulator, Aspen Dynamics, to determine energy...

Mareth, Brett

2009-06-02T23:59:59.000Z

58

Attractive Interactions between Reverse Aggregates and Phase Separation in Concentrated Malonamide Extractant Solutions  

Science Journals Connector (OSTI)

Using small angle X-ray scattering, conductivity, and phase behavior determination, we show that concentrated solutions of molanamide extractants, dimethyldibutyltetradecylmalonamide (DMDBTDMA), are organized in reverse oligomeric aggregates which have ...

C. Erlinger; L. Belloni; Th. Zemb; C. Madic

1999-03-09T23:59:59.000Z

59

Reversible photo-switching in a cell-sized vesicle  

E-Print Network [OSTI]

A photosensitive amphiphilic molecule can switch the shape of an assembled vesicle as determined by microscopic observation. Photo-isomerization induces a change in membrane fluctuation behavior or a morphological transition between ellipsoid and bud shapes, depending on the asymmetrical degree of the initial shape. The mechanism of this reversible photo-switching in the vesicle morphology is interpreted in terms of a change in the effective cross-sectional area of the photosensitive molecule.

Tsutomu Hamada; Yuko T. Sato; Takeshi Nagasaki; Kenichi Yoshikawa

2005-05-07T23:59:59.000Z

60

An overview of time?reversal acoustics  

Science Journals Connector (OSTI)

Time?reversal invariance is a very powerful concept in physics. In the field of acoustics where time reversal invariance occurs time?reversal experiments may be achieved simply with arrays of transmit?receive transducers allowing an incident wave field to be sampled recorded time?reversed and re?emitted. Time reversal mirrors (TRMs) may be used to study random media and chaotic reverberating structures. Common to these complex media is a remarkable robustness exemplified by observations that the more complex the medium between the probe source and the TRM the sharper the focus. TRMs open the way to new signal processings that interest imaging detection telecommunications and therapy. Time reversal mirrors have plenty of applications including ultrasonic therapy and medical imaging non destructive testing telecommunications underwater acoustics seismology sound control home automation. An overview of these fields will be presented.

Mathias Fink

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Boundary-Layer Effects in Reverse Osmosis  

Science Journals Connector (OSTI)

Boundary-Layer Effects in Reverse Osmosis ... In FO, water is extracted from a feed solution using the high osmotic pressure of a hypertonic solution that flows on ... ...

Ulrich Merten; H. K. Lonsdale; R. L. Riley

1964-01-01T23:59:59.000Z

62

Removal of radionuclides in drinking water by membrane treatment using ultrafiltration, reverse osmosis and electrodialysis reversal  

Science Journals Connector (OSTI)

A pilot plant had been built to test the behaviour of ultrafiltration (UF), reverse osmosis (RO), and electrodialysis reversal (EDR) in order to improve the quality of the water supplied to Barcelona metropolitan area from the Llobregat River. This paper presents results from two studies to reduce natural radioactivity. The results from the pilot plant with four different scenarios were used to design the full-scale treatment plant built (SJD WTP). The samples taken at different steps of the treatment were analysed to determine gross alpha, gross beta and uranium activity. The results obtained revealed a significant improvement in the radiological water quality provided by both membrane techniques (RO and EDR showed removal rates higher than 60%). However, UF did not show any significant removal capacity for gross alpha, gross beta or uranium activities. RO was better at reducing the radiological parameters studied and this treatment was selected and applied at the full scale treatment plant. The RO treatment used at the SJD WTP reduced the concentration of both gross alpha and gross beta activities and also produced water of high quality with an average removal of 95% for gross alpha activity and almost 93% for gross beta activity at the treatment plant.

M. Montaña; A. Camacho; I. Serrano; R. Devesa; L. Matia; I. Vallés

2013-01-01T23:59:59.000Z

63

Nonidentified Kikuchi lines with reverse contrast  

SciTech Connect (OSTI)

Electron diffraction patterns of silicon in transmission with contrast reversal from bright to dark for an unidentified Kikuchi line along its length have been obtained. The contrast reversal of an unidentified line is explained within the elementary mechanism of Kikuchi pattern formation taking into account the Kikuchi electron double diffraction.

Karakhanyan, K. R., E-mail: kkarakhanyan@yandex.ru [Yerevan State University (Armenia)

2009-03-15T23:59:59.000Z

64

REVERSIBLE SOLID OXIDE CELLS Mogens Mogensen1  

E-Print Network [OSTI]

The reversibility of solid oxide fuel cells (SOFC), i.e. that they could also work in the solid oxide electrolyser1 REVERSIBLE SOLID OXIDE CELLS Mogens Mogensen1 , Søren Højgaard Jensen1,2 , Anne Hauch1,3 , Ib Chorkendorff2 and Torben Jacobsen3 1 Fuel Cell and Solid State Chemistry Department Risø National Laboratory

65

POLAR FIELD REVERSAL OBSERVATIONS WITH HINODE  

SciTech Connect (OSTI)

We have been monitoring yearly variation in the Sun's polar magnetic fields with the Solar Optical Telescope aboard Hinode to record their evolution and expected reversal near the solar maximum. All magnetic patches in the magnetic flux maps are automatically identified to obtain the number density and magnetic flux density as a function of the total magnetic flux per patch. The detected magnetic flux per patch ranges over four orders of magnitude (10{sup 15}-10{sup 20} Mx). The higher end of the magnetic flux in the polar regions is about one order of magnitude larger than that of the quiet Sun, and nearly that of pores. Almost all large patches ({>=}10{sup 18} Mx) have the same polarity, while smaller patches have a fair balance of both polarities. The polarity of the polar region as a whole is consequently determined only by the large magnetic concentrations. A clear decrease in the net flux of the polar region is detected in the slow rising phase of the current solar cycle. The decrease is more rapid in the north polar region than in the south. The decrease in the net flux is caused by a decrease in the number and size of the large flux concentrations as well as the appearance of patches with opposite polarity at lower latitudes. In contrast, we do not see temporal change in the magnetic flux associated with the smaller patches (<10{sup 18} Mx) and that of the horizontal magnetic fields during the years 2008-2012.

Shiota, D. [Advanced Science Institute, RIKEN (Institute of Physics and Chemical Research), Wako, Saitama 351-0198 (Japan); Tsuneta, S.; Shimojo, M.; Orozco Suarez, D.; Ishikawa, R. [National Astronomical Observatory of Japan (NAOJ), Mitaka, Tokyo 181-8588 (Japan); Sako, N., E-mail: shiota@riken.jp [Department of Astronomical Science, The Graduate University for Advanced Studies, Mitaka, Tokyo 181-8588 (Japan)

2012-07-10T23:59:59.000Z

66

Reversible and irreversible processes in dispersive/dissipative optical media: Electro-magnetic free energy and heat production  

E-Print Network [OSTI]

We solve the problem addressed by Landau and Lifshitz in 1958, and Oughstun and Sherman of determining the dynamical losses in a purely dissipative dielectric media. We develop concrete notions of macroscopic free energy and losses as energy which is reversible and irreversible, respectively, in the medium-field interaction. We define the reversible and irreversible energies and outline the derivation of said quantities. We examine the implications of our definition and it's auxiliary quantity, the reversal field, for the single Lorentz oscillator model of a medium. We show that for this model the reversible energy reduces to the sum of the kinetic and potential energy, as found by Loudon. We note that in general, the sum of the kinetic and potential energies is greater than the reversible energy. We show that the reversible and irreversible energy have the characteristics classically defining free energy and heat.

C. Broadbent; G. Hovhannisyan; M. Clayton; J. Peatross; S. A. Glasgow

2002-07-31T23:59:59.000Z

67

Reversible chemisorption on highly dispersed Ru catalysts  

SciTech Connect (OSTI)

Hydrogen and carbon monoxide adsorptions have been studied by static gas volumetric measurement on a range of highly dispersed Y-zeolite-supported ruthenium catalysts prepared by ion exchange. At ambient temperature, the absorption isotherms indicated two distinct types of adsorption - reversible (composed of both physisorption and weak chemisorption) and irreversible (strongly chemisorbed). The catalysts were highly dispersed and had average particle diameters ranging from 0.9 to 1.6 nm. Reversible hydrogen chemisorption was found to be a function of average particle diameter and dispersion. On the other hand, reversible carbon monoxide chemisorption seemed to be mainly due to interaction with the support.

Yang, C.H.; Goodwin, J.G. Jr.

1982-11-01T23:59:59.000Z

68

Reverse osmosis desalination: Modeling and experiment  

Science Journals Connector (OSTI)

An analytic model for the performance of reverse osmosis desalination systems is derived. Predictions are shown to agree well with extensive measurements conducted on a commercial multistage reverse osmosis desalination unit over a broad range of operating conditions. The model allows a transparent understanding of the dependence of system performance on key design and operating variables. Identifying the characteristic flow rate and length scale of reverse osmosis systems allows a universal description of the variation of the permeate flow rate and recovery factor with the salinity flow rate and pressure of the feedwater.

Naum Fraidenraich; Olga C. Vilela; Gilmário A. Lima; Jeffrey M. Gordon

2009-01-01T23:59:59.000Z

69

Direct Imaging of Asymmetric Magnetization Reversal  

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

Direct Imaging of Asymmetric Magnetization Reversal Print Direct Imaging of Asymmetric Magnetization Reversal Print The phenomenon of exchange bias has transformed how data is read on magnetic hard disks and created an explosion in their information storage density. However, it remains poorly understood, and even the fundamental mechanism of magnetic reversal for exchange-biased systems in changing magnetic fields is unclear. By using x-ray photoemission electron microscopy at the ALS to directly image the magnetic structure of an exchange-biased film, a team from the University of Washington and the Stanford Synchrotron Radiation Laboratory has identified separate magnetic-reversal mechanisms in the two branches of a hysteresis loop. This advance in fundamental understanding will provide new insights for developing the next generation of information storage and sensing devices where exchange bias is expected to play a critical role.

70

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Reversing the Circulation of Magnetic Vortices Reversing the Circulation of Magnetic Vortices Print Wednesday, 31 July 2013 00:00 In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

71

Subsurface imaging with reverse vertical seismic profiles  

E-Print Network [OSTI]

This thesis presents imaging results from a 3D reverse vertical seismic profile (RVSP) dataset measured at a hydrocarbon bearing pinnacle reef in northern Michigan. The study presented many challenges in seismic data ...

Krasovec, Mary L. (Mary Lee), 1972-

2001-01-01T23:59:59.000Z

72

How to reverse-engineer quality rankings  

Science Journals Connector (OSTI)

A good or bad product quality rating can make or break an organization. However, the notion of “quality” is often defined by an independent rating ... step in this process is to “reverse-engineer” a rating compan...

Allison Chang; Cynthia Rudin; Michael Cavaretta; Robert Thomas…

2012-09-01T23:59:59.000Z

73

Landfill Leachate Treatment by Reverse Osmosis  

Science Journals Connector (OSTI)

Leachate from landfill sites represents a highly polluted waste water. It containes biodegradable compounds but also inorganic salts and trace recalcitrant pollutants. The reverse osmosis process with or without ...

B. Weber; F. Holz

1991-01-01T23:59:59.000Z

74

Fuel Cell Technologies Office: Reversible Fuel Cells Workshop  

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

Reversible Fuel Cells Reversible Fuel Cells Workshop to someone by E-mail Share Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on Facebook Tweet about Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on Twitter Bookmark Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on Google Bookmark Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on Delicious Rank Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on Digg Find More places to share Fuel Cell Technologies Office: Reversible Fuel Cells Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations Multimedia Conferences & Meetings Annual Merit Review Proceedings Workshop & Meeting Proceedings

75

Highly Reversible Mg Insertion in Nanostructured Bi for Mg Ion...  

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

Reversible Mg Insertion in Nanostructured Bi for Mg Ion Batteries. Highly Reversible Mg Insertion in Nanostructured Bi for Mg Ion Batteries. Abstract: Rechargeable magnesium...

76

Materials and System Issues with Reversible SOFC | Department...  

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

Reversible Fuel Cells Workshop Summary Report Advanced Materials for Reversible Solid Oxide Fuel Cell (RSOFC), Dual Mode Operation with Low Degradation Lessons Learned from...

77

Characterization of ion selective membranes for application in reverse  

E-Print Network [OSTI]

Characterization of ion selective membranes for application in reverse electrodialysis systems I would have imagined when I started. i #12;Abstract Reverse electrodialysis (RED) is a renewable

Kjelstrup, Signe

78

Reverse Osmosis for the Separation of Organics from Aqueous Solutions  

Science Journals Connector (OSTI)

Reverse osmosis (RO) has proved reliable and economically ... such effluents often contain organics as solvents. Reverse osmosis is very suitable for the treatment of... Its mod...

R. Rautenbach; I. Janisch

1988-01-01T23:59:59.000Z

79

Discrimination reversal learning in yearling horses  

E-Print Network [OSTI]

DISCRIMINATION REVERSAL LEARNING IN YEARLING HORSES A Thesis by JEANNA CHASTAIN FISKE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE December 1976... Major Subjects Animal Science DISCRIMINATION REVERSAL LEARNING IN YEARLING HORSES A Thesis by JEANNA CHASTAIN FISKE Approved as to style and content by& Chai an o Committee ad oi epartment Member Nem er December 1976 ABSTRACT Discrimination...

Fiske, Jeanna Chastain

1976-01-01T23:59:59.000Z

80

Studying protein assembly with reversible Brownian dynamics of patchy particles  

SciTech Connect (OSTI)

Assembly of protein complexes like virus shells, the centriole, the nuclear pore complex, or the actin cytoskeleton is strongly determined by their spatial structure. Moreover, it is becoming increasingly clear that the reversible nature of protein assembly is also an essential element for their biological function. Here we introduce a computational approach for the Brownian dynamics of patchy particles with anisotropic assemblies and fully reversible reactions. Different particles stochastically associate and dissociate with microscopic reaction rates depending on their relative spatial positions. The translational and rotational diffusive properties of all protein complexes are evaluated on-the-fly. Because we focus on reversible assembly, we introduce a scheme which ensures detailed balance for patchy particles. We then show how the macroscopic rates follow from the microscopic ones. As an instructive example, we study the assembly of a pentameric ring structure, for which we find excellent agreement between simulation results and a macroscopic kinetic description without any adjustable parameters. This demonstrates that our approach correctly accounts for both the diffusive and reactive processes involved in protein assembly.

Klein, Heinrich C. R. [Institute for Theoretical Physics, Heidelberg University, 69120 Heidelberg (Germany)] [Institute for Theoretical Physics, Heidelberg University, 69120 Heidelberg (Germany); Schwarz, Ulrich S., E-mail: ulrich.schwarz@bioquant.uni-heidelberg.de [Institute for Theoretical Physics, Heidelberg University, 69120 Heidelberg (Germany); BioQuant, Heidelberg University, 69120 Heidelberg (Germany)

2014-05-14T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

High solute rejecting membranes for reverse osmosis: Polyetheramide hydrazide  

SciTech Connect (OSTI)

Synthesis of benzhydrazide polymers and determination of reverse osmosis properties of their membranes were reported earlier. Their performance was not adequate for seawater desalination or for high radioactive decontamination factors (DF). The same hydrazide polymers modified by incorporation of additional monomers with ether linkages were synthesized by low temperature polycondensation of freshly prepared m-amino benzhydrazide, p-amino benzhydrazide, and 4,4{prime}-diamino diphenyl ether, with isophthaloyl chloride and terephthaloyl chloride in dimethyl acetamide solvent. A series of film-forming polymers prepared by altering the molar ratios of the reacting monomers were characterized in terms of percent moisture regain, inherent viscosity, solubility parameters, and interfacial sorption characteristics. Asymmetric membranes prepared from these polymer samples were characterized in terms of the pure water permeability constant and the solute transport parameter, and were tested for their reverse osmosis performance. An optimum mole ratio of reaching monomers has been identified for the synthesis of polymer and the resulting membrane offered the best performance for reverse osmosis (salt rejection as high as 99.4% for 3.5% sodium chloride solution). The incorporation of aromatic ether linkages in the polyamide benzhydrazide polymeric chains appears to alter the polar and nonpolar character of the bulk polymer, and also the membrane solution interface characteristics, resulting in enhanced solute separation. These membranes appear to be potential candidates for single-stage seawater desalination and also for a variety of industrial effluent treatment applications for significantly high DF radioactive effluent treatment.

Bindal, R.C.; Ramachandhran, V.; Misra, B.M.; Ramani, M.P.S. (Bhabha Atomic Research Centre, Bombay (India))

1991-01-01T23:59:59.000Z

82

Real space mapping of oxygen vacancy diffusion and electrochemical transformations by hysteretic current reversal curve measurements  

SciTech Connect (OSTI)

An excitation voltage biases an ionic conducting material sample over a nanoscale grid. The bias sweeps a modulated voltage with increasing maximal amplitudes. A current response is measured at grid locations. Current response reversal curves are mapped over maximal amplitudes of the bias cycles. Reversal curves are averaged over the grid for each bias cycle and mapped over maximal bias amplitudes for each bias cycle. Average reversal curve areas are mapped over maximal amplitudes of the bias cycles. Thresholds are determined for onset and ending of electrochemical activity. A predetermined number of bias sweeps may vary in frequency where each sweep has a constant number of cycles and reversal response curves may indicate ionic diffusion kinetics.

Kalinin, Sergei V.; Balke, Nina; Borisevich, Albina Y.; Jesse, Stephen; Maksymovych, Petro; Kim, Yunseok; Strelcov, Evgheni

2014-06-10T23:59:59.000Z

83

Reverse Brazil Nut Problem: Competition between Percolation and Condensation  

Science Journals Connector (OSTI)

In the Brazil nut problem (BNP), hard spheres with larger diameters rise to the top. There are various explanations (percolation, reorganization, convection), but a broad understanding or control of this effect is by no means achieved. A theory is presented for the crossover from BNP to the reverse Brazil nut problem based on a competition between the percolation effect and the condensation of hard spheres. The crossover condition is determined, and theoretical predictions are compared to molecular dynamics simulations in two and three dimensions.

Daniel C. Hong; Paul V. Quinn; Stefan Luding

2001-04-09T23:59:59.000Z

84

Reverse-Engineering Banks' Financial Strength Ratings Using ...  

E-Print Network [OSTI]

Dec 27, 2006 ... reverse-engineering a superior bank rating system, which turns out to ...... sector (

mal92

2009-05-16T23:59:59.000Z

85

Reversed Doppler effect under reflection from a shock electromagnetic wave  

Science Journals Connector (OSTI)

The possibility of observing the reversed Doppler effect in an electrodynamic system of coupled transmission...

A. M. Belyantsev; A. B. Kozyrev

2002-11-01T23:59:59.000Z

86

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Magnetic Vortices Print Reversing the Circulation of Magnetic Vortices Print In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

87

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Magnetic Vortices Print Reversing the Circulation of Magnetic Vortices Print In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

88

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Magnetic Vortices Print Reversing the Circulation of Magnetic Vortices Print In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

89

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Magnetic Vortices Print Reversing the Circulation of Magnetic Vortices Print In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

90

Reversing the Circulation of Magnetic Vortices  

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

Reversing the Circulation of Magnetic Vortices Print Reversing the Circulation of Magnetic Vortices Print In magnetic media, information is stored in binary form-one or zero, depending on which way the electronic spins are aligned in a given section of the medium. Recently, however, magnetic vortices have drawn scientists toward a new possibility: multibit storage in which each logic unit has four states instead of two and can store twice the information. Each tiny magnetic whirl has a polarity that can point up or down and a circulation that can be oriented clockwise or counterclockwise. Previous studies have shown that the polarity can be flipped on command. Now, using time-resolved magnetic soft x-ray microscopy at the ALS, researchers have shown for the first time how to use pulsed magnetic fields to reverse the circulation.

91

Development of an integrated reverse engineering system  

Science Journals Connector (OSTI)

This paper describes the development of a customised reverse engineering system in which a 3D digitiser (MicroScribe-3DX) has been integrated with a computer-aided design (CAD) system (Pro/ENGINEER). The application programme written in C language enables a real-time input from the digitiser to Pro/ENGINEER. Two Application Programming Interfaces (APIs) were used: the MicroScribe-3D Software Development Kit (SDK) and Pro/TOOLKIT. The former allows the user to develop an integrated system through intuitive and high-level function calls to the digitiser. The latter enables a user to customise a Pro/ENGINEER environment. This system offers an intuitive and user-friendly means for reverse engineering. It also helps to shorten the whole reverse engineering process. This is because the digitised data can be displayed and edited in real time, so that early identification and exclusion of the undesired and incorrect data are made possible.

X.W. Xu; L. Song

2006-01-01T23:59:59.000Z

92

Optimal design of reverse osmosis module networks  

SciTech Connect (OSTI)

The structure of individual reverse osmosis modules, the configuration of the module network, and the operating conditions were optimized for seawater and brackish water desalination. The system model included simple mathematical equations to predict the performance of the reverse osmosis modules. The optimization problem was formulated as a constrained multivariable nonlinear optimization. The objective function was the annual profit for the system, consisting of the profit obtained from the permeate, capital cost for the process units, and operating costs associated with energy consumption and maintenance. Optimization of several dual-stage reverse osmosis systems were investigated and compared. It was found that optimal network designs are the ones that produce the most permeate. It may be possible to achieve economic improvements by refining current membrane module designs and their operating pressures.

Maskan, F.; Wiley, D.E.; Johnston, L.P.M.; Clements, D.J.

2000-05-01T23:59:59.000Z

93

Tokamak Equilibria with Reversed Current Density  

Science Journals Connector (OSTI)

Observations of nearly zero toroidal current in the central region of tokamaks (the “current hole”) raises the question of the existence of toroidal equilibria with very low or reversed current in the core. The solutions of the Grad-Shafranov equilibrium equation with hollow toroidal current density profile including negative current density in the plasma center are investigated. Solutions of the corresponding eigenvalue problem provide simple examples of such equilibrium configurations. More realistic equilibria with toroidal current density reversal are computed using a new equilibrium problem formulation and computational algorithm which do not assume nested magnetic surfaces.

A. A. Martynov; S. Yu. Medvedev; L. Villard

2003-08-21T23:59:59.000Z

94

Reversed Doppler Effect in Photonic Crystals  

Science Journals Connector (OSTI)

Nonrelativistic reversed Doppler shifts have never been observed in nature and have only been speculated to occur in pathological systems with simultaneously negative effective permittivity and permeability. This Letter presents a different, new physical phenomenon that leads to a nonrelativistic reversed Doppler shift in light. It arises when light is reflected from a moving shock wave propagating through a photonic crystal. In addition to reflection of a single frequency, multiple discrete reflected frequencies or a 10 GHz periodic modulation can also be observed when a single carrier frequency of wavelength 1????m is incident.

Evan J. Reed; Marin Solja?i?; John D. Joannopoulos

2003-09-23T23:59:59.000Z

95

Iowa's first electrodialysis reversal water treatment plant  

Science Journals Connector (OSTI)

In 1979 the City of Washington was notified by the Iowa Department of Natural Resources (IDNR) that the City was in violation of the radium standard for drinking water. The City of Washington authorized an engineering study to determine the most cost-effective and practical way to remove radium and, at the same time, improve overall water quality. Several possible treatment alternatives were evaluated. It was finally decided to utilize electrodialysis reversal (EDR). Washington obtains its water from three deep wells ranging in capacity from 600–780 gpm. The untreated water withdrawn from the wells first passes through the EDR units. There are three EDR units, each able to produce 285 gpm of finished water. In the future, another EDR unit can be easily added to the other three units, since the new plant was built and plumbed for an additional EDR unit if water demand increased. The Jordan aquifer supply is adequate for current and future needs. The average daily water usage in 1993 was 818,000 gal/d. In order to meet peak flows, it is possible to bypass the EDR units with part of the untreated water and then blend treated and untreated water. The treated water meets IDNR standards of 5.0 pC/L. After the EDR units, the water flows through an aerator where odor-causing gases and carbon dioxide are removed. Aeration reduces the amount of caustic soda and chlorine used in the finished water. The hydrogen sulfide gas leaves the water as it passes through the aerator, and this loss of gas creates less chlorine demand. Total and free chlorine residuals are now detected in every water main of the town, whereas before, the residuals would not be detected in certain area of Washington. Phosphates have been cut back from 7 pounds per day to one pound per day. Better water quality is now being achieved with fewer chemicals added to the finished water. Washington's water treatment plant is the first municipal EDR plant in the State of Iowa and one of the largest municipal installations in the United States.

John Hays

2000-01-01T23:59:59.000Z

96

Reversibility and Adiabatic Computation: Trading Time and Space for Energy \\Lambda  

E-Print Network [OSTI]

advances in computing power. In view of the difficulty in improving low­weight small­size battery for the greatest number of simulated steps. We derive a trade­off for storage space versus ir­ reversible erasure performance, low­energy computing is already at this time of writing a main determining factor in advanced

Vitanyi, Paul M.B.

97

Is Protein Unfolding the Reverse of Protein Folding? A Lattice Simulation Analysis  

E-Print Network [OSTI]

Is Protein Unfolding the Reverse of Protein Folding? A Lattice Simulation Analysis Aaron R. Dinner1- turing conditions are commonly employed to study the mechanism by which a protein folds to its native of determining the mechanism by which a protein folds would be to use an accurate high-resolution model

Dinner, Aaron

98

An Explanation for Beta's Mean-reversion  

E-Print Network [OSTI]

for the designation as an UNDERGRADUATE RESEARCH SCHOLAR Approved by Research Advisor: Dr. Dennis Jansen May 2014 Major: Economics TABLE OF CONTENTS Page ABSTRACT.................................................................................................................................. 8 1 ABSTRACT An Explanation for Beta’s Mean Reversion. (May 2014) Connor Matthew Bodkin Department of Economics Texas A&M University Research Advisor: Dr. Dennis Jansen Department of Economics This study aims to improve upon...

Bodkin, Connor Matthew

2013-09-26T23:59:59.000Z

99

Mitochondrial modulation: reversible phosphorylation takes center stage?  

E-Print Network [OSTI]

.5 billion years, mitochondria have evolved from oxygen-scavenging bacterial symbionts into pri- mary controlMitochondrial modulation: reversible phosphorylation takes center stage? David J. Pagliarini1 and Center for Human Genetics Research, Massachusetts General Hospital, Boston, MA 02114, USA In the past 1

Pagliarini, David J.

100

Reversing entanglement change by a weak measurement  

E-Print Network [OSTI]

PHYSICAL REVIEW A 82, 052323 (2010) Reversing entanglement change by a weak measurement Qingqing Sun,1,* M. Al-Amri,2 Luiz Davidovich,3 and M. Suhail Zubairy1 1Department of Physics and Institute for Quantum Science and Engineering, Texas A...

Sun, Qingqing; Al-Amri, M.; Davidovich, Luiz; Zubairy, M. Suhail.

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Reversion and dehydration reactions of glucose during the dilute sulfuric acid hydrolysis of cellulose  

SciTech Connect (OSTI)

The inaccessibility of all glycosidic bonds necessitates industrial conversion schemes which employ a dilute acid catalyst at high temperatures. Process conditions also promote further reactions of glucose via the reversion and dehydration pathways. Quantitative determination of the yields of the major reversion and dehydration products is important for understanding and predicting the amounts of these materials expected under envisioned industrial operating conditions. Microcrystalline cellulose (Avicel) was hydrolyzed with sulfuric acid (0.0-1.25 wt.%), at high temperatures (160-250/sup 0/C), and at a 3:1 liquid-to-solid ratio. The hydrolysis was monitored by evaluating the amount of cellulose remaining and the yields of glucose, solid humin, levulinic acid, formic acid, hydroxymethylfurfural (HMF), and reversion products as a function of the aforementioned reaction conditions. Analysis of the reversion products required the development of a technique for the quantitation of trace carbohydrates in complex mixtures and led to the development of a reduction/permethylation gas chromatographic procedure. Cellulose hydrolysis followed pseudo-homogeneous first-order kinetics. Glucose yield was adequately described as consecutive first-order reactions. Anhydrosugars formed via reversion followed equilibrium reaction kinetics whereas the disaccharides did not. Total reversion product yields approached 10% at 250/sup 0/C. Quantitative determination of the major dehydration products provided important information concerning the destruction of glucose. HMF was produced in up to 12% yields based on the theoretical amount of glucose available, and furfural was detected in up to 5% yields. A carbon mass balance based on the determined product yields revealed that approximately 90% of all carbon was accounted for at maximum glucose yields.

Helm, R.F.

1987-01-01T23:59:59.000Z

102

A REVERSE SHOCK IN GRB 130427A  

SciTech Connect (OSTI)

We present extensive radio and millimeter observations of the unusually bright GRB 130427A at z = 0.340, spanning 0.67-12 days after the burst. We combine these data with detailed multi-band UV, optical, NIR, and Swift X-ray observations and find that the broadband afterglow emission is composed of distinct reverse shock and forward shock contributions. The reverse shock emission dominates in the radio/millimeter and at ?< 0.1 days in the UV/optical/NIR, while the forward shock emission dominates in the X-rays and at ?> 0.1 days in the UV/optical/NIR. We further find that the optical and X-ray data require a wind circumburst environment, pointing to a massive star progenitor. Using the combined forward and reverse shock emission, we find that the parameters of the burst include an isotropic kinetic energy of E{sub K,{sub iso}} ? 2 × 10{sup 53} erg, a mass loss rate of M-dot ?3×10{sup -8} M{sub ?} yr{sup –1} (for a wind velocity of 1000 km s{sup –1}), and a Lorentz factor at the deceleration time of ?(200 s) ? 130. Due to the low density and large isotropic energy, the absence of a jet break to ?15 days places only a weak constraint on the opening angle, ?{sub j} ?> 2.°5, and therefore a total energy of E{sub ?} + E{sub K} ?> 1.2 × 10{sup 51} erg, similar to other gamma-ray bursts (GRBs). The reverse shock emission is detectable in this burst due to the low circumburst density, which leads to a slow cooling shock. We speculate that this property is required for the detectability of reverse shocks in radio and millimeter bands. Following on GRB 130427A as a benchmark event, observations of future GRBs with the exquisite sensitivity of the Very Large Array and ALMA, coupled with detailed modeling of the reverse and forward shock contributions, will test this hypothesis.

Laskar, T.; Berger, E.; Zauderer, B. A.; Margutti, R.; Soderberg, A. M.; Chakraborti, S.; Lunnan, R.; Chornock, R. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Chandra, P. [National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune University Campus, Ganeshkhind, Pune 411 007 (India); Ray, A. [Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005 (India)

2013-10-20T23:59:59.000Z

103

On Reverse Engineering in the Cognitive and Brain Andreas Schierwagen  

E-Print Network [OSTI]

On Reverse Engineering in the Cognitive and Brain Sciences Andreas Schierwagen Institute #12;On Reverse Engineering in the Cognitive and Brain Sciences Andreas Schierwagen Institute research initiatives try to utilize the operational principles of organisms and brains to develop

Schierwagen, Andreas

104

Concentration of ultrafiltered benzylpenicillin broths by reverse osmosis  

Science Journals Connector (OSTI)

...Concentration of benzylpenicillin filtered broths purified by ultrafiltration and fermented broths clarified by ultrafiltration was carried out by reverse osmosis. This study was done using a reverse osmosis l...

A. M. A. Nabais; J. P. Cardoso

2000-01-01T23:59:59.000Z

105

Development of Robust Organosilica Membranes for Reverse Osmosis  

Science Journals Connector (OSTI)

Development of Robust Organosilica Membranes for Reverse Osmosis ... polyamide was also reversible, in other words, the N-chlorinated intermediate could be regenerated to initial amide with the alk. ...

Rong Xu; Jinhui Wang; Masakoto Kanezashi; Tomohisa Yoshioka; Toshinori Tsuru

2011-10-31T23:59:59.000Z

106

Reverse Doppler effect of magnons with negative group velocity scattered from a moving Bragg grating  

Science Journals Connector (OSTI)

We demonstrate experimentally and theoretically the reverse Doppler effect when magnons with negative group velocity are reflected off a moving Bragg grating. This grating, which represents a moving magnonic crystal, is created in an yttrium-iron-garnet film by the periodic strain induced by a traveling surface acoustic wave. As reflection occurs from a crystal rather than from a single reflecting surface, the wave number of the scattered wave is strictly determined by a momentum conservation law. Magnons scattered from the approaching (receding) magnonic crystal are found to be shifted down (up) in frequency. This result, together with an earlier report of reverse Doppler shift from moving sources [D. D. Stancil et al., Phys. Rev. B, 74, 060404(R) (2006)], establishes that the reverse Doppler effect is a universal phenomenon in systems with negative group velocity and not restricted to left-handed materials.

A. V. Chumak; P. Dhagat; A. Jander; A. A. Serga; B. Hillebrands

2010-04-16T23:59:59.000Z

107

Sakhalin reversal tops C. I. S. action  

SciTech Connect (OSTI)

This paper reports that the outlook for joint ventures in the former U.S.S.R. has been badly muddied by Russia's reversal on one of the biggest investment opportunities: development off Sakhalin Island. Russia's Supreme Council has suspended award of a feasibility study of development of oil and gas reserves off Sakhalin to a combine of Marathon Oil Co., McDermott International, and Mitsui and Co., (MMM). Development project cost is pegged at $9 - 10 billion.

Not Available

1992-02-24T23:59:59.000Z

108

Reverse osmosis desalination with osmotic polyelectrolyte intermediate  

E-Print Network [OSTI]

degree of, '8'~STER O"' SCIENCE '!ay ISS7 Nejo? Subje". t: IiI EQICAE ENO& NEERINC REVERSE OSMOSIS DESALINATION WITH OSMOTIC POLYELECTROLYTE INTERMEDIATE A Thesis By THOMAS THEODORE McCONNELL Approved as to style and content by: airman o... , . . . . . . . . . . 91 Calculated Permeability Coefficients of Mem- branes Using Equation (42) Calculated Desalination Ratio from Equation (34) and Weight Per Cent Rejection from Equa- tion (45) for a 3. 5 Weight Per Cent Sodium Chloride Bulk Solution 92 94 Table...

McConnell, Thomas Theodore

2012-06-07T23:59:59.000Z

109

Progress on the Development of Reversible SOFC Stack Technology  

Broader source: Energy.gov [DOE]

Presentation by Casey Brown, Versa Power Systems, at the NREL Reversible Fuel Cells Workshop, April 19, 2011

110

Transition fields during geomagnetic reversals and their geodynamic significance  

Science Journals Connector (OSTI)

...show that for certain reversals, a path midway between the two preferred paths (i...show that for certain reversals, a path midway between the two preferred paths (i...show that for certain reversals, a path midway between the two preferred paths (i...

1997-01-01T23:59:59.000Z

111

The Testing of Geomagnetic Reversal Models: Recent Developments [and Discussion  

Science Journals Connector (OSTI)

20 August 1982 research-article The Testing of Geomagnetic Reversal Models: Recent...data are most useful with regard to the testing of geomagnetic reversal models. First...English illus. United Kingdom 1985 The testing of geomagnetic reversal models; recent...

1982-01-01T23:59:59.000Z

112

Reverse Audio Engineering: Model-Based Inversion of Dynamic Range  

E-Print Network [OSTI]

1 Reverse Audio Engineering: Model-Based Inversion of Dynamic Range Compression Stanislaw Gorlow, Graduate Student Member, IEEE and Joshua D. Reiss, Member, IEEE Abstract--Reverse audio engineering so far, reverse audio engineering. I. INTRODUCTION SOUND or audio engineering is an established discipline

113

Theoretical power density from salinity gradients using reverse electrodialysis  

Science Journals Connector (OSTI)

Reverse electrodialysis (RED) is a technology to generate power from mixing waters with different salinity. The net power density (i.e. power per membrane area) is determined by 1) the membrane potential, 2) the ohmic resistance, 3) the resistance due to changing bulk concentrations, 4) the boundary layer resistance and 5) the power required to pump the feed water. Previous power density estimations often neglected the latter three terms. This paper provides a set of analytical equations to estimate the net power density obtainable from RED stacks with spacers and RED stacks with profiled membranes. With the current technology, the obtained maximum net power density is calculated at 2.7 W/m2. Higher power densities could be obtained by changing the cell design, in particular the membrane resistance and the cell length. Changing these parameters one and two orders of magnitude respectively, the calculated net power density is close to 20 W/m2.

David A. Vermaas; Enver Guler; Michel Saakes; Kitty Nijmeijer

2012-01-01T23:59:59.000Z

114

Molecular dynamics study of a polymeric reverse osmosis membrane.  

SciTech Connect (OSTI)

Molecular dynamics (MD) simulations are used to investigate the properties of an atomic model of an aromatic polyamide reverse osmosis membrane. The monomers forming the polymeric membrane are cross-linked progressively on the basis of a heuristic distance criterion during MD simulations until the system interconnectivity reaches completion. Equilibrium MD simulations of the hydrated membrane are then used to determine the density and diffusivity of water within the membrane. Given a 3 MPa pressure differential and a 0.125 {micro}m width membrane, the simulated water flux is calculated to be 1.4 x 10{sup -6} m/s, which is in fair agreement with an experimental flux measurement of 7.7 x 10{sup -6} m/s.

Harder, E.; Walters, D. E.; Bodnar, Y. D.; Faibish, R. S.; Roux, B. (Nuclear Engineering Division); (Univ. of Chicago); (Rosalind Franklin Univ. of Medicine and Science)

2009-07-30T23:59:59.000Z

115

Reversible Guest Exchange Mechanisms in Supramolecular Host-GuestAssemblies  

SciTech Connect (OSTI)

Synthetic chemists have provided a wide array of supramolecular assemblies able to encapsulate guest molecules. The scope of this tutorial review focuses on supramolecular host molecules capable of reversibly encapsulating polyatomic guests. Much work has been done to determine the mechanism of guest encapsulation and guest release. This review covers common methods of monitoring and characterizing guest exchange such as NMR, UV-VIS, mass spectroscopy, electrochemistry, and calorimetry and also presents representative examples of guest exchange mechanisms. The guest exchange mechanisms of hemicarcerands, cucurbiturils, hydrogen-bonded assemblies, and metal-ligand assemblies are discussed. Special attention is given to systems which exhibit constrictive binding, a motif common in supramolecular guest exchange systems.

Pluth, Michael D.; Raymond, Kenneth N.

2006-09-01T23:59:59.000Z

116

Control of residual aluminum from conventional treatment to improve reverse osmosis performance  

E-Print Network [OSTI]

Deposit Control for Reverse Osmosis Systems , Technicalon Colloidal Fouling in Reverse Osmosis and NanofiltrationSiO 2 ) Scaling for Reverse Osmosis , ASTM Designation D

Gabelich, C J; Ishida, K P; Gerringer, F W; Evangelista, R; Kalyan, M; Suffet, I H

2006-01-01T23:59:59.000Z

117

Overpressure prediction by mean total stress estimate using well logs for compressional environments with strike-slip or reverse faulting stress state  

E-Print Network [OSTI]

-dimensional compaction theory and depend on a relationship between porosity and vertical effective stress. Strike-slip or reverse faulting environments especially require a different way to determine pore-pressure, since the overburden is not the maximum stress...

Ozkale, Aslihan

2007-04-25T23:59:59.000Z

118

Time Reversal in Solids (Linear and Nonlinear Elasticity): Multimedia Resources in Time Reversal  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

Dynamic nonlinear elastic behavior, nonequilibrium dynamics, first observed as a curiosity in earth materials has now been observed in a great variety of solids. The primary manifestations of the behavior are characteristic wave distortion, and slow dynamics, a recovery process to equilibrium that takes place linearly with the logarithm of time, over hours to days after a wave disturbance. The link between the diverse materials that exhibit nonequilibrium dynamics appears to be the presence of soft regions, thought to be 'damage' at many scales, ranging from order 10-9 m to 10-1 m at least. The regions of soft matter may be distributed as in a rock sample, or isolated, as in a sample with a single crack [LANLhttp://www.lanl.gov/orgs/ees/ees11/geophysics/nonlinear/nonlinear.shtml]. The Geophysics Group (EES-11) at Los Alamos National Laboratory has posted two or more multimedia items under each of the titles below to demonstrate aspects of their work: 1) Source Reconstruction Using Time Reversal; 2) Robustness and Efficiency of Time Reversal Acoustics in Solid Media; 3) Audio Example of Time Reversal - Speech Privacy; 4) Crack Imagining with Time Reversal - Experimental Results; 5) Time Reversal of the 2004 (M9.0) Sumatra Earthquake.

119

A reverse counterfactual analysis of causation  

E-Print Network [OSTI]

to justly acknowledge. Particular thanks go to: Knut Nygaard, for pizza and weights in Boston; Julian Hendrix for cat-sitting, house-sitting and wife-sitting while I was at Harvard; Richard Lloyd Morgan, for listening; Jackie Solomon and Maria Whelan... , Schaffer 2007. 4Collins, Hall and Paul say that a divide-and-conquer methodology is acceptable, given how tough the analysis of causation is (Collins et al. 2004, 38–39). 1.5. THINKING ABOUT THE REVERSE COUNTERFACTUAL 13 the difference between e occurring...

Broadbent, Alex

2007-11-20T23:59:59.000Z

120

Steady State Thermoelectric Field-Reversed Configurations  

Science Journals Connector (OSTI)

It is shown that the cross-field thermoelectric force of magnetized plasmas can maintain field-reversed configurations against resistive diffusion, resulting in a steady state device attractive for thermonuclear fusion. If a peaked radial temperature profile is maintained, the thermoelectric force is in the opposite direction to the usual resistive friction, thus maintaining the field configuration. The field maintenance is tantamount to dynamo action, operating even in two dimensions. We show that a steady state device can be made by simply heating the O-point: no external electric fields or particle sources are needed. The feasibility of this scheme for fusion is discussed.

A. B. Hassam; R. M. Kulsrud; R. J. Goldston; H. Ji; M. Yamada

1999-10-11T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Kinetic Stability of the Field Reversed Configuration  

SciTech Connect (OSTI)

New computational results are presented which advance the understanding of the stability properties of the Field-Reversed Configuration (FRC). The FRC is an innovative confinement approach that offers a unique fusion reactor potential because of its compact and simple geometry, translation properties, and high plasma beta. One of the most important issues is FRC stability with respect to low-n (toroidal mode number) MHD modes. There is a clear discrepancy between the predictions of standard MHD theory that many modes should be unstable on the MHD time scale, and the observed macroscopic resilience of FRCs in experiments.

E.V. Belova; R.C. Davidson; H. Ji; and M. Yamada

2002-07-09T23:59:59.000Z

122

Global Stability of the Field Reversed Configuration  

SciTech Connect (OSTI)

New computational results are presented which provide a theoretical basis for the stability of the Field Reversed Configuration (FRC). The FRC is a compact toroid with negligible toroidal field in which the plasma is confined by a poloidal magnetic field associated with toroidal diamagnetic current. Although many MHD modes are predicted to be unstable, FRCs have been produced successfully by several formation techniques and show surprising macroscopic resilience. In order to understand this discrepancy, we have developed a new 3D nonlinear hybrid code (kinetic ions and fluid electrons), M3D-B, which is used to study the role of kinetic effects on the n = 1 tilt and higher n modes in the FRC. Our simulations show that there is a reduction in the tilt mode growth rate in the kinetic regime, but no absolute stabilization has been found for s bar less than or approximately equal to 1, where s bar is the approximate number of ion gyroradii between the field null and the separatrix. However, at low values of s bar, the instabilities saturate nonlinearly through a combination of a lengthening of the initial equilibrium and a modification of the ion distribution function. These saturated states persist for many Alfven times, maintaining field reversal.

E.V. Belova; S.C. Jardin; H. Ji; R.M. Kulsrud; W. Park; M. Yamada

2000-11-15T23:59:59.000Z

123

Reverse osmosis performance with solutions containing tri-n-butyl phosphate  

SciTech Connect (OSTI)

Tests were conducted to determine whether the reverse osmosis (RO) units at the F/H Effluent Treatment Facility (ETF) at the Savannah River could be made to process solutions containing tri-n-butyl phosphate (TBP). It was desired to test whether operation at a feed pH other than neutral would improve performance. Test results are discussed in this report and indicate that little improvement in the water flux can be expected at other pH values.

Siler, J.L.

1991-10-22T23:59:59.000Z

124

Reversible Electrocatalytic Production and Oxidation of Hydrogen at Low Overpotentials by a Functional Hydrogenase Mimic  

SciTech Connect (OSTI)

A new bis(diphosphine) nickel(II) complex, [Ni(PPh2NR2)2](BF4)2, 1, (R = CH2CH2OCH3) is described. A {Delta}G{sup o} of 0.84 kcal/mol{sup -1} for hydrogen addition for this complex was calculated from the experimentally determined equilibrium constant. This complex displays reversible electrocatalytic activity for hydrogen production and oxidation at low overpotentials, a characteristic most commonly associated with hydrogenase enzymes.

Smith, Stuart E.; Yang, Jenny Y.; DuBois, Daniel L.; Bullock, Morris

2012-03-26T23:59:59.000Z

125

Novel 4-Way Refrigerant Reversing Valve for Heat Pumps  

SciTech Connect (OSTI)

This project is nearing completion. Since the last progress report (November, 1999), all experimental tests have been completed. Preliminary analysis shows the refrigerant pressure drops through the reversing valve were reduced by an average of about 60{percent}, when compared to traditional reversing valves. Also, the prototype reversing valve reduced the overall coefficient of performance (COP) by an average of only 0.45{percent}.

Darin W. Nutter

2000-02-17T23:59:59.000Z

126

Dynamic simulation of a reverse Brayton refrigerator  

SciTech Connect (OSTI)

A test refrigerator based on the modified Reverse Brayton cycle has been developed in the Chinese Academy of Sciences recently. To study the behaviors of this test refrigerator, a dynamic simulation has been carried out. The numerical model comprises the typical components of the test refrigerator: compressor, valves, heat exchangers, expander and heater. This simulator is based on the oriented-object approach and each component is represented by a set of differential and algebraic equations. The control system of the test refrigerator is also simulated, which can be used to optimize the control strategies. This paper describes all the models and shows the simulation results. Comparisons between simulation results and experimental data are also presented. Experimental validation on the test refrigerator gives satisfactory results.

Peng, N.; Xiong, L. Y.; Dong, B.; Liu, L. Q. [State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, CAS, Beijing, 100190 (China); Lei, L. L.; Tang, J. C. [State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, CAS, Beijing, 100190 China and Graduate University of Chinese Academy of Sciences, Beijing, 100190 (China)

2014-01-29T23:59:59.000Z

127

Direct observation of time reversal violation  

SciTech Connect (OSTI)

A direct evidence for Time Reversal Violation (TRV) means an experiment that, considered by itself, clearly shows TRV independent of, and unconnected to, the results for CP Violation. No existing result before the recent BABAR experiment with entangled neutral B mesons had demonstrated TRV in this sense. There is a unique opportunity for a search of TRV with unstable particles thanks to the Einstein-Podolsky-Rosen (EPR) Entanglement between the two neutral mesons in B, and PHI, Factories. The two quantum effects of the first decay as a filtering measurement and the transfer of information to the still living partner allow performing a genuine TRV asymmetry with the exchange of 'in' and 'out' states. With four independent TRV asymmetries, BABAR observes a large deviation of T-invariance with a statistical significance of 14 standard deviations, far more than needed to declare the result as a discovery. This is the first direct observation of TRV in the time evolution of any system.

Bernabeu, J. [Department of Theoretical Physics, University of Valencia, and IFIC, Joint Centre Univ. Valencia-CSIC (Spain)

2013-06-12T23:59:59.000Z

128

Integration of reverse osmosis and membrane crystallization for sodium sulphate recovery  

Science Journals Connector (OSTI)

Abstract Reverse osmosis and membrane crystallization are evaluated in this work as stand-alone and integrated technologies for the recovery of Na2SO4 from aqueous solutions. When SO2 is removed from flue gases by absorption in an aqueous solution and reacts with NaOH, a reusable product (i.e., Na2SO4) of industrial interest can be obtained. For stand-alone reverse osmosis, the effect of the concentration of the feed solution and pressure is studied. For membrane crystallization, the influence of the concentration and flow rate of the feed and osmotic solutions on the process performance has been determined. The characterization of the obtained crystals shows that Na2SO4·10H2O is obtained. From the experimental results, the potential for integration of reverse osmosis and membrane crystallization is simulated. It was concluded that using a reverse osmosis unit prior to the membrane crystallization unit minimizes the total membrane area in comparison with the stand-alone processes.

Wenqi Li; Bart Van der Bruggen; Patricia Luis

2014-01-01T23:59:59.000Z

129

Control of magnetization reversal in oriented strontium ferrite thin films  

SciTech Connect (OSTI)

Oriented Strontium Ferrite films with the c axis orientation were deposited with varying oxygen partial pressure on Al{sub 2}O{sub 3}(0001) substrate using Pulsed Laser Deposition technique. The angle dependent magnetic hysteresis, remanent coercivity, and temperature dependent coercivity had been employed to understand the magnetization reversal of these films. It was found that the Strontium Ferrite thin film grown at lower (higher) oxygen partial pressure shows Stoner-Wohlfarth type (Kondorsky like) reversal. The relative importance of pinning and nucleation processes during magnetization reversal is used to explain the type of the magnetization reversal with different oxygen partial pressure during growth.

Roy, Debangsu, E-mail: debangsu@physics.iisc.ernet.in; Anil Kumar, P. S. [Department of Physics, Indian Institute of Science, Bangalore 560012 (India)

2014-02-21T23:59:59.000Z

130

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known...

131

Ethanol separation from molasses based fermentation broth by reverse osmosis  

Science Journals Connector (OSTI)

Irradiated styrene-grafted cellulose acetate membrane was used for the separation of ethanol by reverse osmosis. Ethanol separation from molasses based fermentation broth...

J. P. Choudhury; P. Ghosh; B. K. Guha

1986-10-01T23:59:59.000Z

132

Molecular dynamics simulations of osmosis and reverse osmosis in solutions  

Science Journals Connector (OSTI)

Computer simulation studies using the method of molecular dynamics have been carried out to investigate osmosis and reverse osmosis in solutions separated by semi-permeable membranes....

S. Murad

1996-01-01T23:59:59.000Z

133

Structures of cellulose acetate membranes for reverse osmosis  

Science Journals Connector (OSTI)

Studies under the scanning electron microscope have shown that the cellulose acetate membranes used for reverse osmosis are high-molecular-weight condensation structures of...

I. N. Vlodavets; G. Z. Nefedova…

1977-01-01T23:59:59.000Z

134

Reversible mechanism for spin crossover in transition-metal cyanides  

E-Print Network [OSTI]

We report the mechanisms for reversible and repeatable spin transition in a Prussian blue analog crystal, KCo[Fe(CN)[subscript 6

Kabir, Mohammad Mukul

135

Photochromic Metal-Organic Frameworks: Reversible Control of...  

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

Photochromic Metal-Organic Frameworks: Reversible Control of Singlet Oxygen Generation Previous Next List Jihye Park, Dawei Feng, Shuai Yuan and Hong-Cai Zhou, Angew. Chem. Int....

136

Development of Reversible Fuel Cell Systems at Proton Energy...  

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

at Proton Energy Presentation by Everett Anderson, PROTON ON SITE, at the NREL Reversible Fuel Cells Workshop, April 19, 2011 revfcwkshpanderson.pdf More Documents &...

137

Reverse audio engineering for active listening and other applications.  

E-Print Network [OSTI]

??This work deals with the problem of reverse audio engineering for active listening. The format under consideration corresponds to the audio CD. The musical content… (more)

Gorlow, Stasnislaw

2013-01-01T23:59:59.000Z

138

Energy-efficient reverse osmosis desalination process  

Science Journals Connector (OSTI)

Abstract A novel energy-efficient reverse osmosis (EERO) process is proposed for which the retentate from single-stage reverse osmosis (SSRO) serves as the feed to a countercurrent membrane cascade with recycle (CMCR). The 3-stage EERO process employs two, whereas the 4-stage EERO process employs three stages in the CMCR. The EERO process is advantageous because of four features: (i) coupling SSRO with a CMCR; (ii) countercurrent retentate and permeate flow; (iii) permeate recycling; and (iv) retentate self-recycling owing to the use of one or more nanofiltration stages. The EERO process was compared to conventional SSRO for both processes operating at the thermodynamic limit and employing an energy-recovery device. For the same overall recovery the osmotic pressure differential is reduced by 33% and 50% relative to SSRO for the 3- and 4-stage ERRO processes, respectively. There is a critical recovery above which the EERO process also can reduce the specific energy consumption (SEC) relative to SSRO for the same recovery. For a typical seawater feed of 35 g/L the 3-stage EERO process can achieve a 75% recovery at a net SEC of 2.746 kWh/m3, an 11.0% reduction in the SEC relative to SSRO for the same recovery. The 4-stage EERO process can achieve a 75% recovery at the same net SEC as SSRO (3.086 kWh/m3). Accounting for the additional membrane area required for the EERO process increases its cost relative to that for SSRO by at most 8%. An additional benefit of the EERO process relative to SSRO is the highly concentrated retentate that reduces the brine disposal volume or can be used to greatly increase the draw potential to harvest its osmotic potential energy via the pressure-retarded osmosis process.

Tzyy Haur Chong; Siew-Leng Loo; William B. Krantz

2015-01-01T23:59:59.000Z

139

Seawater feed reverse osmosis preheating appraisal, Part II: system performance  

Science Journals Connector (OSTI)

The present work evaluates the seawater feed Reverse Osmosis (RO) preheating system process. In this respect, the basic transport equations, which describe the system elements, are used for determining the performance of the process operating parameters and for assessing the feed preheating process. A seawater membrane, FTSW30HR-380, was used to perform this study. In Part I of the work, the leading element, which governs the whole system, was studied. Also, the limitations of the leading element operating parameters were determined. In the recent work, a computer program is developed using the RO-governing process equations to obtain the system design and projection for the seawater feed preheating assessment, which enabled the determination of the whole system by solving the system elements, one by one. Also, an evaluation of the power needed for freshwater production. The RO system feed preheating is studied for feed temperatures ranging from 15°C to 45°C. The study shows that the permeate salt concentration increases as the feed temperature increases and the system salt rejection decreases. The present study concluded that the permeate productivity decreases with the increase in the feed temperature. Results also show that the product's specific power consumption is dependent on the number of elements used, and energy recovery. In the case of the maximum available number of elements, it is found that the feed temperature increases as the specific power consumption increases, with or without brine pressure energy recovery. However, in the case of a constant number of elements, seven elements, the specific power consumption decreases as the feed temperature increases.

Aly Karameldin

2006-01-01T23:59:59.000Z

140

Tests of time reversal in neutron?nucleus scattering  

Science Journals Connector (OSTI)

Experiments to test time?reversal invariance are discussed. The experiments are based on observables constructed from the momentum and spin vectors of epithermal neutrons and from the spin of an aligned or polarized target. It is shown that the proposed tests are detailed balance tests of time?reversal invariance. The status of the experiments is briefly reviewed.

J. David Bowman

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Reducing current reversal time in electric motor control  

DOE Patents [OSTI]

The time required to reverse current flow in an electric motor is reduced by exploiting inductive current that persists in the motor when power is temporarily removed. Energy associated with this inductive current is used to initiate reverse current flow in the motor.

Bredemann, Michael V

2014-11-04T23:59:59.000Z

142

Hydrogenation of Magnesium Nickel Boride for Reversible Hydrogen Storage  

Science Journals Connector (OSTI)

Hydrogenation of Magnesium Nickel Boride for Reversible Hydrogen Storage ... Use of hydrogen for transportation applications requires materials that not only store hydrogen at high density but that can operate reversibly at temperatures and pressures below approximately 100 °C and 10 bar, respectively. ... This composition is based on assuming the following complete hydrogenation reaction:which stores 2.6 wt % hydrogen. ...

Wen Li; John J. Vajo; Robert W. Cumberland; Ping Liu; Son-Jong Hwang; Chul Kim; Robert C. Bowman, Jr.

2009-11-06T23:59:59.000Z

143

Reverse Ecology: From Systems to Environments and Back  

E-Print Network [OSTI]

Chapter 15 Reverse Ecology: From Systems to Environments and Back Roie Levy and Elhanan Borenstein the environments in which they evolved and are adapted to. Re- verse Ecology--an emerging new frontier's ecology. The Reverse Ecology framework facilitates the translation of high-throughput genomic data

Borenstein, Elhanan

144

Synthesis of the Optimal 4-bit Reversible Circuits  

E-Print Network [OSTI]

Optimal synthesis of reversible functions is a non-trivial problem. One of the major limiting factors in computing such circuits is the sheer number of reversible functions. Even restricting synthesis to 4-bit reversible functions results in a huge search space (16!~2^44 functions). The output of such a search alone, counting only the space required to list Toffoli gates for every function, would require over 100 terabytes of storage. In this paper, we present an algorithm that synthesizes an optimal circuit for any 4-bit reversible specification. We employ several techniques to make the problem tractable. We report results from several experiments, including synthesis of random 4-bit permutations, optimal synthesis of all 4-bit linear reversible circuits, synthesis of existing benchmark functions, and distribution of optimal circuits. Our results have important implications for the design and optimization of quantum circuits, testing circuit synthesis heuristics, and performing experiments in the area of quantum information processing.

Oleg Golubitsky; Sean M. Falconer; Dmitri Maslov

2010-03-09T23:59:59.000Z

145

Linear multistep methods for integrating reversible differential equations  

E-Print Network [OSTI]

This paper studies multistep methods for the integration of reversible dynamical systems, with particular emphasis on the planar Kepler problem. It has previously been shown by Cano & Sanz-Serna that reversible linear multisteps for first-order differential equations are generally unstable. Here, we report on a subset of these methods -- the zero-growth methods -- that evade these instabilities. We provide an algorithm for identifying these rare methods. We find and study all zero-growth, reversible multisteps with six or fewer steps. This select group includes two well-known second-order multisteps (the trapezoidal and explicit midpoint methods), as well as three new fourth-order multisteps -- one of which is explicit. Variable timesteps can be readily implemented without spoiling the reversibility. Tests on Keplerian orbits show that these new reversible multisteps work well on orbits with low or moderate eccentricity, although at least 100 steps/radian are required for stability.

Wyn Evans; Scott Tremaine

1999-06-24T23:59:59.000Z

146

Plant experience with temporary reverse osmosis makeup water systems  

SciTech Connect (OSTI)

Pacific Gas and Electric (PG and E) Company's Diablo Canyon Power Plant (DCPP), which is located on California's central coast, has access to three sources of raw water: creek water, well water, and seawater. Creek and well water are DCPP's primary sources of raw water; however, because their supply is limited, these sources are supplemented with seawater. The purpose of this paper is to discuss the temporary, rental, reverse osmosis systems used by PG and E to process DCPP's raw water into water suitable for plant makeup. This paper addresses the following issues: the selection of reverse osmosis over alternative water processing technologies; the decision to use vendor-operated temporary, rental, reverse osmosis equipment versus permanent PG and E-owned and -operated equipment; the performance of DCPP's rental reverse osmosis systems; and, the lessons learned from DCPP's reverse osmosis system rental experience that might be useful to other plants considering renting similar equipment.

Polidoroff, C.

1986-01-01T23:59:59.000Z

147

Fusion proton diagnostic for the C-2 field reversed configuration  

SciTech Connect (OSTI)

Measurements of the flux of fusion products from high temperature plasmas provide valuable insights into the ion energy distribution, as the fusion reaction rate is a very sensitive function of ion energy. In C-2, where field reversed configuration plasmas are formed by the collision of two compact toroids and partially sustained by high power neutral beam injection [M. Binderbauer et al., Phys. Rev. Lett. 105, 045003 (2010); M. Tuszewski et al., Phys. Rev. Lett. 108, 255008 (2012)], measurements of DD fusion neutron flux are used to diagnose ion temperature and study fast ion confinement and dynamics. In this paper, we will describe the development of a new 3 MeV proton detector that will complement existing neutron detectors. The detector is a large area (50?cm{sup 2}), partially depleted, ion implanted silicon diode operated in a pulse counting regime. While the scintillator-based neutron detectors allow for high time resolution measurements (?100 kHz), they have no spatial or energy resolution. The proton detector will provide 10 cm spatial resolution, allowing us to determine if the axial distribution of fast ions is consistent with classical fast ion theory or whether anomalous scattering mechanisms are active. We will describe in detail the diagnostic design and present initial data from a neutral beam test chamber.

Magee, R. M., E-mail: rmagee@trialphaenergy.com; Clary, R.; Korepanov, S.; Smirnov, A.; Garate, E.; Knapp, K. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States); Tkachev, A. [Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)

2014-11-15T23:59:59.000Z

148

BIMETALLIC LITHIUM BOROHYDRIDES TOWARD REVERSIBLE HYDROGEN STORAGE  

SciTech Connect (OSTI)

Borohydrides such as LiBH{sub 4} have been studied as candidates for hydrogen storage because of their high hydrogen contents (18.4 wt% for LiBH{sub 4}). Limited success has been made in reducing the dehydrogenation temperature by adding reactants such as metals, metal oxides and metal halides. However, full rehydrogenation has not been realized because of multi-step decomposition processes and the stable intermediate species produced. It is suggested that adding second cation in LiBH{sub 4} may reduce the binding energy of B-H. The second cation may also provide the pathway for full rehydrogenation. In this work, several bimetallic borohydrides were synthesized using wet chemistry, high pressure reactive ball milling and sintering processes. The investigation found that the thermodynamic stability was reduced, but the full rehydrogenation is still a challenge. Although our experiments show the partial reversibility of the bimetallic borohydrides, it was not sustainable during dehydriding-rehydriding cycles because of the accumulation of hydrogen inert species.

Au, M.

2010-10-21T23:59:59.000Z

149

Liquid suspensions of reversible metal hydrides  

DOE Patents [OSTI]

The reversibility of the process M + x/2 H/sub 2/ ..-->.. MH/sub x/, where M is a metal hydride former that forms a hydride MH/sub x/ in the presence of H/sub 2/, generally used to store and recall H/sub 2/, is found to proceed under a liquid, thereby to reduce contamination, provide better temperature control and provide in situ mobility of the reactants. Thus, a slurry of particles of a metal hydride former with an inert solvent is subjected to temperature and pressure controlled atmosphere containing H/sub 2/, to store hydrogen (at high pressures) and to release (at low pressures) previously stored hydrogen. The direction of the flow of the H/sub 2/ through the liquid is dependent upon the H/sub 2/ pressure in the gas phase at a given temperature. When the former is above the equilibrium absorption pressure of the respective hydride the reaction proceeds to the right, i.e., the metal hydride is formed and hydrogen is stored in the solid particle. When the H/sub 2/ pressure in the gas phase is below the equilibrium dissociation pressure of the respective hydride the reaction proceeds to the left, the metal hydride is decomposed and hydrogen is released into the gas phase.

Reilly, J.J.; Grohse, E.W.; Winsche, W.E.

1983-12-08T23:59:59.000Z

150

Durability Evaluation of Reversible Solid Oxide Cells  

SciTech Connect (OSTI)

An experimental investigation on the performance and durability of single solid oxide cells (SOCs) is under way at the Idaho National Laboratory. Reversible operation of SOCs includes electricity generation in the fuel cell mode and hydrogen generation in the electrolysis mode. Degradation is a more significant issue when operating SOCs in the electrolysis mode. In order to understand and mitigate the degradation issues in high temperature electrolysis, single SOCs with different configurations from several manufacturers have been evaluated for initial performance and long-term durability. A new test apparatus for single cell and small stack tests has been developed for this purpose. Cells were obtained from four industrial partners. Cells from Ceramatec Inc. and Materials and Systems Research Inc. (MSRI) showed improved durability in electrolysis mode compared to previous stack tests. Cells from Saint Gobain Advanced Materials Inc. (St. Gobain) and SOFCPower Inc. demonstrated stable performance in the fuel cell mode, but rapid degradation in the electrolysis mode, especially at high current density. Electrolyte-electrode delamination was found to have a significant impact on degradation in some cases. Enhanced bonding between electrolyte and electrode and modification of the electrode microstructure helped to mitigate degradation. Polarization scans and AC impedance measurements were performed during the tests to characterize cell performance and degradation.

Xiaoyu Zhang; James E. O'Brien; Robert C. O'Brien; Gregory K. Housley

2013-11-01T23:59:59.000Z

151

A comparison of ROChem reverse osmosis and spiral wound reverse osmosis membrane modules  

SciTech Connect (OSTI)

Testing of the ROChem Disc Tube[reg sign] reverse osmosis (RO) module's performance on biologically active feed waters has been completed. Both the ROChem module (using Filmtec standard-rejection seawater membranes) and the Filmtec spiral-wound membrane module (using Filmtec high-rejection seawater membranes) were tested with stimulant solutions containing typical bacteria and metal hydroxide levels found in the F/H Effluent Treatment Facility (ETF) influent. Results indicate that the ROChem module gave superior performance over the spiral-wound module. Water flux losses were reduced by over 30% for water recoveries above 40%.

Siler, J.L.

1992-01-31T23:59:59.000Z

152

A comparison of ROChem reverse osmosis and spiral wound reverse osmosis membrane modules  

SciTech Connect (OSTI)

Testing of the ROChem Disc Tube{reg_sign} reverse osmosis (RO) module`s performance on biologically active feed waters has been completed. Both the ROChem module (using Filmtec standard-rejection seawater membranes) and the Filmtec spiral-wound membrane module (using Filmtec high-rejection seawater membranes) were tested with stimulant solutions containing typical bacteria and metal hydroxide levels found in the F/H Effluent Treatment Facility (ETF) influent. Results indicate that the ROChem module gave superior performance over the spiral-wound module. Water flux losses were reduced by over 30% for water recoveries above 40%.

Siler, J.L.

1992-01-31T23:59:59.000Z

153

Argonne CNM Highlight: Reverse Chemical Switching of a Ferroelectric Film  

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

Reverse Chemical Switching of a Ferroelectric Film Reverse Chemical Switching of a Ferroelectric Film Reverse Chemmical Switching of a Ferroelectric Film Ferroelectric materials display a spontaneous electric polarization below the Curie temperature that can be reoriented, typically by applying an electric field. In this study, researchers from Argonne, Northern Illinois University, and The University of Pennsylvania have demonstrated that the chemical environment can control the polarization orientation in an ultrathin ferroelectric film. This is complementary to recent predictions that polarization can affect surface chemistry and illuminates potential applications in sublithographic patterning and electrically tunable catalysts. In situ synchrotron X-ray scattering measurements showed that high or low

154

Biphase turbine for reverse osmosis desalination. Final report  

SciTech Connect (OSTI)

A new hydraulic reaction turbine was designed to recover the power available in the high-pressure waste-brine stream of reverse osmosis desalination systems. A reaction turbine sized for reverse-osmosis systems producing 600 gph was built and tested. The turbine performed well driving either a variable-speed pump or an electrical generator. Measured turbine efficiency (shaft power divided by available power) was 63%, compared with a prediction of 67%. The turbine can be built with larger capacity to reduce the size, weight and power consumption of reverse osmosis desalination systems. Efficiency of larger units is predicted to lie in the range of 65 to 70%.

Limburg, P.L.

1982-12-01T23:59:59.000Z

155

Purication of reghting water containing a uorinated surfactant by reverse osmosis coupled to  

E-Print Network [OSTI]

Purication of reghting water containing a uorinated surfactant by reverse osmosis coupled. Reverse osmosis of pretreated pilot reghting water and concentrated model solutions of pretreated reghting. The concentrate from reverse osmosis could be recycled in electrocoagulation-ltration. Experimental results

Paris-Sud XI, Université de

156

Fouling of reverse osmosis membranes by hydrocarbonated and fluorinated surfactants contained in firefighting water  

E-Print Network [OSTI]

Title: Fouling of reverse osmosis membranes by hydrocarbonated and fluorinated surfactants osmosis efficiently treated the water from fire extinguishment. In this work we focused on the reverse surfactants [1]. Experimental results indicated that electrocoagulation and filtration followed by reverse

Paris-Sud XI, Université de

157

Reversible Poisoning of the Nickel/Zirconia Solid Oxide Fuel...  

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

Poisoning of the NickelZirconia Solid Oxide Fuel Cell Anodes by Hydrogen Chloride in Coal Gas. Reversible Poisoning of the NickelZirconia Solid Oxide Fuel Cell Anodes by Hydrogen...

158

Reverse logistics network design for spent batteries: a simulation study  

Science Journals Connector (OSTI)

End of life (EOL) product management, which encompasses reuse, remanufacturing and materials recycling, requires a structured reverse logistic network in order to collect products efficiently at the end of their life cycle. This work describes modelling and simulation of reverse logistics network design for collection of spent batteries for Sangrur District of North India. To compare different order assignment, a simulation model of forward and reverse logistics networks has been developed. Several simulation experiments have been designed to analyse impact of the system design factors on the operational performance of the reverse logistics system. The simulation results show that the model presented in this paper calculates the battery collection cost, transfer time, transfer cost, and resource utilisation in a predictable manner. Moreover, it provides a tool to understand how the system behaves by carrying out 'what-if' assessments and to identify which parameters are most important for more detailed analysis.

Arvind Jayant; Pardeep Gupta; S.K. Garg

2014-01-01T23:59:59.000Z

159

Reverse Auction Bidding- A Study of Industry Professionals  

E-Print Network [OSTI]

study. (Professional Paper), TAMU, College Station. Smeltzer, L. R., & Carr, A. S. (2003). Electronic reverse auctions: Promises, risks and conditions for success. Industrial Marketing Management, 32(6), 481-488 Thompson, J., & Knoll, H...

Piper, Robert

2013-12-06T23:59:59.000Z

160

First-Principles Prediction of Thermodynamically Reversible Hydrogen...  

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

First-Principles Prediction of Thermodynamically Reversible Hydrogen Storage Reactions in the Li-Mg-Ca-B-H system Home Author: V. Ozolins, E. H. Majzoub, C. Wolverton Year: 2009...

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Hydrogen production in a reversible flow filtration combustion reactor  

Science Journals Connector (OSTI)

The noncatalytic process of syngas production by means of partial oxidation of ... by air oxygen in a reversible flow filtration combustion reactor has been investigated experimentally. We have ... providing the ...

Yu. M. Dmitrenko; P. A. Klevan

2011-11-01T23:59:59.000Z

162

Global confinement and discrete dynamo activity in the MST reversed...  

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

confinement and discrete dynamo activity in the MST reversed-field pinch* S. Hokin,+ A. Almagri, S. Assadi, J. Beckstead, G. Chartas, N. Cracker, M. Cudzinovic, D. Den Hat-tog, FL...

163

Synthesis of Reversible Functions Using Various Gate Libraries and Design Specifications.  

E-Print Network [OSTI]

?? This dissertation is devoted to efficient automated logic synthesis of reversible circuits using various gate types and initial specifications. These Reversible circuits are of… (more)

Alhagi, Nouraddin

2010-01-01T23:59:59.000Z

164

Journal Article: Real-time sub-Ångstrom imaging of reversible...  

Office of Scientific and Technical Information (OSTI)

imaging of reversible and irreversible conformations in rhodium catalysts and graphene Citation Details Title: Real-time sub-ngstrom imaging of reversible and...

165

E-Print Network 3.0 - analogue reverse transcriptase Sample Search...  

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

0 Summary: of the Human Immunodeficiency Virus Type 1 Reverse Transcriptase by d4TTP: an Equivalent Incorporation... (HIV-1) reverse transcriptase (RT), there is little detailed...

166

Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...  

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

Nano-scale Composite Hetero-structures: Novel High Capacity Reversible Anodes for Lithium-ion Batteries Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...

167

REVERSIBLE HYDROGEN STORAGE IN A LiBH{sub 4}-C{sub 60} NANOCOMPOSITE  

SciTech Connect (OSTI)

Reversible hydrogen storage in a LiBH{sub 4}:C{sub 60} nanocomposite (70:30 wt. %) synthesized by solvent-assisted mixing has been demonstrated. During the solvent-assisted mixing and nanocomposite formation, a chemical reaction occurs in which the C{sub 60} cages are significantly modified by polymerization as well as by hydrogenation (fullerane formation) in the presence of LiBH{sub 4}. We have determined that two distinct hydrogen desorption events are observed upon rehydrogenation of the material, which are attributed to the reversible formation of a fullerane (C{sub 60}H{sub x}) as well as a LiBH4 species. This system is unique in that the carbon species (C{sub 60}) actively participates in the hydrogen storage process which differs from the common practice of melt infiltration of high surface area carbon materials with LiBH{sub 4} (nanoconfinment effect). This nanocomposite demonstrated good reversible hydrogen storage properties as well as the ability to absorb hydrogen under mild conditions (pressures as low as 10 bar H{sub 2} or temperatures as low as 150?C). The nanocomposite was characterized by TGA-RGA, DSC, XRD, LDI-TOF-MS, FTIR, 1H NMR, and APPI MS.

Teprovich, J.; Zidan, R.; Peters, B.; Wheeler, J.

2013-08-06T23:59:59.000Z

168

Testing of a benchscale Reverse Osmosis/Coupled Transport system for treating contaminated groundwater  

SciTech Connect (OSTI)

The Reverse Osmosis/Coupled Transport process is a innovative means of removing radionuclides from contaminated groundwater at the Hanford Site. Specifically, groundwater in the 200 West Area of the Hanford Site has been contaminated with uranium, technetium, and nitrate. Investigations are proceeding to determine the most cost effective method to remove these contaminants. The process described in this paper combines three different membrane technologies (reverse osmosis, coupled transport, and nanofiltration to purify the groundwater while extracting and concentrating uranium, technetium, and nitrate into separate solutions. This separation allows for the future use of the radionuclides, if needed, and reduces the amount of waste that will need to be disposed of. This process has the potential to concentrate the contaminants into solutions with volumes in a ratio of 1/10,000 of the feed volume. This compares to traditional volume reductions of 10 to 100 for ion exchange and stand-alone reverse osmosis. The successful demonstration of this technology could result in significant savings in the overall cost of decontaminating the groundwater.

Hodgson, K.M.; Lunsford, T.R.; Panjabi, G.

1994-01-01T23:59:59.000Z

169

The benefits of hybridising electrodialysis with reverse osmosis  

Science Journals Connector (OSTI)

Abstract A cost analysis reveals that hybridisation of electrodialysis with reverse osmosis is only justified if the cost of water from the reverse osmosis unit is less than 40% of that from a stand-alone electrodialysis system. In such cases the additional reverse osmosis costs justify the electrodialysis cost savings brought about by shifting salt removal to higher salinity, where current densities are higher and equipment costs lower. Furthermore, the analysis suggests that a simple hybrid configuration is more cost effective than a recirculated hybrid, a simple hybrid being one where the reverse osmosis concentrate is fed to the electrodialysis stack and the products from both units are blended, and a recirculated being one hybrid involving recirculation of the electrodialysis product back to the reverse osmosis unit. The underlying rationale is that simple hybridisation shifts salt removal away from the lowest salinity zone of operation, where salt removal is most expensive. Further shifts in the salinity at which salt is removed, brought about by recirculation, do not justify the associated increased costs of reverse osmosis.

Ronan K. McGovern; Syed M. Zubair; John H. Lienhard V

2014-01-01T23:59:59.000Z

170

Optimization of membrane stack configuration for efficient hydrogen production in microbial reverse-electrodialysis electrolysis cells coupled  

E-Print Network [OSTI]

Optimization of membrane stack configuration for efficient hydrogen production in microbial reverse-electrodialysis 2013 Keywords: Microbial reverse-electrodialysis electrolysis cell Ammonium bicarbonate Hydrogen reverse electrodialysis (RED) stack into the MEC, which was called a microbial reverse-electrodialysis

171

Deterministic Ratchets, Circle Maps, and Current Reversals R. Salgado-Garcia,1,2  

E-Print Network [OSTI]

- rameters such as ``current quantization,'' current reversal, and devil's staircase phenomena [6,7]. Though

Aldana, Maximino

172

Characterization of the fouling phenomenon in reverse osmosis  

SciTech Connect (OSTI)

This dissertation explores the application of a bench scale reverse osmosis test cell apparatus as a research tool. This versatile system was used to explore the response of a reverse osmosis membrane to various types of feedwaters. As a result of this research, an easy, accurate experimental method for predicting the rejection in any reverse osmosis system has been developed and demonstrated. The dissertation illustrates a simple procedure to identify if a precipitating feedwater solution will foul a reverse osmosis membrane. The research also presents evidence that suggests that the common practice of increasing feed flow rates to clean a membrane may not always be an acceptable method to revive a system. In addition to this information about the RO systems, the dissertation provides insight into the environment around the membrane surface. Statistically significant information about the nature and behavior of the membrane permeation coefficient is presented. Evidence is provided to demonstrate the negative effects on membrane performance of small amounts of grease contamination from the process equipment. Insight into the resistive nature of membranes, boundary layers, and fouling deposits is also presented. Throughout the course of this research, the relationship between concentration polarization and the permeate flux is illustrated. This is done first in the traditional terms of wall concentration, and later in terms of flow resistance. This dissertation also provides an experimental demonstration of both the detachment of a boundary layer from a membrane and the resistive nature of a precipitated fouling layer in a reverse osmosis system.

Barger, M.

1989-01-01T23:59:59.000Z

173

Wind reversals in turbulent Rayleigh-Benard convection  

E-Print Network [OSTI]

The phenomenon of irregular cessation and subsequent reversal of the large-scale circulation in turbulent Rayleigh-B\\'enard convection is theoretically analysed. The force and thermal balance on a single plume detached from the thermal boundary layer yields a set of coupled nonlinear equations, whose dynamics is related to the Lorenz equations. For Prandtl and Rayleigh numbers in the range $10^{-2} \\leq \\Pr \\leq 10^{3}$ and $10^{7} \\leq \\Ra \\leq 10^{12}$, the model has the following features: (i) chaotic reversals may be exhibited at Ra $\\geq 10^{7}$; (ii) the Reynolds number based on the root mean square velocity scales as $\\Re_{rms} \\sim \\Ra^{[0.41 ... 0.47]}$ (depending on Pr), and as $\\Re_{rms} \\sim \\Pr^{-[0.66 ... 0.76]}$ (depending on Ra); and (iii) the mean reversal frequency follows an effective scaling law $\\omega / (\

Francisco Fontenele Araujo; S. Grossmann; D. Lohse

2005-08-29T23:59:59.000Z

174

Synthesis of Reversible Functions Beyond Gate Count and Quantum Cost  

E-Print Network [OSTI]

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

Robert Wille; Mehdi Saeedi; Rolf Drechsler

2010-04-26T23:59:59.000Z

175

Studies on the reverse osmosis treatment of uranyl nitrate solution  

SciTech Connect (OSTI)

The aqueous effluent generated in uranium processing, particularly in the nuclear fuel fabrication step, contains mainly uranium nitrate. This requires treatment before discharge into the environment to meet stringent standards. This paper presents the performance of cellulose acetate membranes with regard to rejection of uranium under reverse osmotic conditions for feed concentrations up to 200 mg/l of uranium, which corresponds to the levels normally prevalent in the effluents. The use of additives like the disodium salt of ethylenediaminetetraacetic acid and sodium sulfate for the improvement of reverse osmosis performance of the above membranes was also investigated. In the light of the experimental results, the suitability of reverse osmosis for the decontamination of uranium effluents is discussed.

Prabhakar, S.; Panicker, S.T.; Misra, B.M.; Ramani, P.S. (Bhabha Atomic Research Centre, Bombay (India))

1992-03-01T23:59:59.000Z

176

Asymmetric Magnetization Reversal in Exchange-Biased Hysteresis Loops  

SciTech Connect (OSTI)

Polarized neutron reflectometry is used to probe the in-plane projection of the net-magnetization vector M(vector sign) of polycrystalline Fe films exchange coupled to twinned (110) MnF{sub 2} or FeF{sub 2} antiferromagnetic (AF) layers. The magnetization reversal mechanism depends upon the orientation of the cooling field with respect to the twinned microstructure of the AF, and whether the applied field is increased to (or decreased from) a positive saturating field; i.e., the magnetization reversal is asymmetric. The reversal of the sample magnetization from one saturated state to the other occurs via either domain wall motion or magnetization rotation on opposite sides of the same hysteresis loop. (c) 2000 The American Physical Society.

Fitzsimmons, M. R.; Yashar, P.; Leighton, C.; Schuller, Ivan K.; Nogues, J.; Majkrzak, C. F.; Dura, J. A.

2000-04-24T23:59:59.000Z

177

C*-algebras associated with reversible extensions of logistic maps  

SciTech Connect (OSTI)

The construction of reversible extensions of dynamical systems presented in a previous paper by the author and A.V. Lebedev is enhanced, so that it applies to arbitrary mappings (not necessarily with open range). It is based on calculating the maximal ideal space of C*-algebras that extends endomorphisms to partial automorphisms via partial isometric representations, and involves a new set of 'parameters' (the role of parameters is played by chosen sets or ideals). As model examples, we give a thorough description of reversible extensions of logistic maps and a classification of systems associated with compression of unitaries generating homeomorphisms of the circle. Bibliography: 34 titles.

Kwasniewski, Bartosz K [Institute of Mathematics, University of Bialystok (Poland)

2012-10-31T23:59:59.000Z

178

Energy current imaging method for time reversal in elastic media  

SciTech Connect (OSTI)

An energy current imaging method is presented for use in locating sources of wave energy during the back propagation stage of the time reversal process. During the back propagation phase of an ideal time reversal experiment, wave energy coalesces from all angles of incidence to recreate the source event; after the recreation, wave energy diverges in every direction. An energy current imaging method based on this convergence/divergence behavior has been developed. The energy current imaging method yields a smaller spatial distribution for source reconstruction than is possible with traditional energy imaging methods.

Anderson, Brian E [Los Alamos National Laboratory; Ulrich, Timothy J [Los Alamos National Laboratory; Le Bas, Pierre - Yves A [Los Alamos National Laboratory; Larmat, Carene [Los Alamos National Laboratory; Johnson, Paul A [Los Alamos National Laboratory; Guyer, Robert A [UNR; Griffa, Michele [ETH ZURICH

2009-01-01T23:59:59.000Z

179

Reverse osmosis process successfully converts oil field brine into freshwater  

SciTech Connect (OSTI)

A state-of-the-art process in the San Ardo oil field converted produced brine into freshwater. The conversion process used chemical clarification, softening, filtration, and reverse osmosis (RO). After extensive testing resolved RO membrane fouling problems, the pilot plant successfully handled water with about 7,000 mg/l. of total dissolved solids, 250 mg/l. silica, and 170 mg/l. soluble oil. The treated water complies with the stringent California drinking water standard. The paper describes water reclamation, the San Ardo process, stability, reverse osmosis membrane fouling, membranes at high pH, water quality, and costs.

Tao, F.T.; Curtice, S.; Hobbs, R.D.; Sides, J.L.; Wieser, J.D. (Texaco Inc., Bellaire, TX (United States)); Dyke, C.A.; Tuohey, D. (Texaco Inc., Beacon, NY (United States)); Pilger, P.F. (Texaco E and P Inc., Denver, CO (United States))

1993-09-20T23:59:59.000Z

180

Categorical Exclusion Determinations: American Recovery and Reinvestment  

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

3107: Categorical Exclusion Determination 3107: Categorical Exclusion Determination Harvard Medical School, Wyss Institute - Engineering a Bacterial Reverse Fuel Cell CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Massachusetts Office(s): Advanced Research Projects Agency - Energy June 2, 2010 CX-003103: Categorical Exclusion Determination The Ohio State University - Bioconversion of Carbon Dioxide to Biofuels CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Ohio Office(s): Advanced Research Projects Agency - Energy June 1, 2010 CX-002717: Categorical Exclusion Determination Oklahoma Shawnee Tribe CX(s) Applied: B2.5, B5.1 Date: 06/01/2010 Location(s): Miami, Oklahoma Office(s): Energy Efficiency and Renewable Energy June 1, 2010 CX-002477: Categorical Exclusion Determination Demand Energy Networks CX(s) Applied: B3.6, B5.1

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to obtain the most current and comprehensive results.


181

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Magnetic Vortex Core Reversal by Low-Field Excitations Magnetic Vortex Core Reversal by Low-Field Excitations Print Wednesday, 28 March 2007 00:00 In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

182

Introduction The median problem for the reversal distance in  

E-Print Network [OSTI]

genomes E. Ohlebusch, M.I. Abouelhoda, K. Hockel, J. Stallkamp University of Ulm, Germany CPM 2005 The median problem for the reversal distance in circular bacterial genomes #12;Introduction Methods Conclusion General Problem Distances Specific Problem Median Problem Given 3 genomes G1, G2, and G3, find

Lonardi, Stefano

183

Artificial Neural Networks for Recognition of Electrocardiographic Lead Reversal  

E-Print Network [OSTI]

Artificial Neural Networks for Recognition of Electrocardiographic Lead Reversal Bo Heden, Iv, which are rule-based,is a diffi- cult task, even for the expert. Artificial neural networks (ANNs) have lack of prop- 100%). The neural networks performed better *an `the er treatment. The pur r se

Peterson, Carsten

184

Synthesis and Optimization of Reversible Circuits for Homogeneous Boolean Functions  

E-Print Network [OSTI]

Homogenous Boolean function is an essential part of any cryptographic system. The ability to construct an optimized reversible circuits for homogeneous Boolean functions might arise the possibility of building cryptographic system on novel computing paradigms such as quantum computers. This paper shows a factorization algorithm to synthesize such circuits.

Ahmed Younes

2007-10-02T23:59:59.000Z

185

Reversed magnetization A NOVEL DEVICE FOR CONTINUOUS FLOW MAGNETIC TRAPPING  

E-Print Network [OSTI]

1. 3 µm5 µm Reversed magnetization A NOVEL DEVICE FOR CONTINUOUS FLOW MAGNETIC TRAPPING AND SORTING Martin d'hères, France ABSTRACT The manipulation of magnetically labeled bio-objects of nano or micrometer sizes is now realizable by combining the magnetic forces with microfluidics. This paper reports

Paris-Sud XI, Université de

186

Supporting Information Reversible and Persistent Electrical Bistability in  

E-Print Network [OSTI]

S1 Supporting Information Reversible and Persistent Electrical Bistability in Single-Crystals of a Self-Assembled -Conjugated Tetraaryl System: A Sub-Micron Scale Electrical Characterization Shay Tal1 N(Bu)4 + PF6 - ; scan rate=0.125 - 3Vs-1 ; reference electrode=Ag/AgNO3; working and counter

Gunawardena, Jeremy

187

PREDICTORS OF QUALITY OF LIFE WITH AXILLARY REVERSE  

E-Print Network [OSTI]

Acknowledgements I would like to thank Dr. Carol Connor and Dr. Jennifer Klemp for allowing me access to their data base for women undergoing Axillary Reverse Mapping. The findings support my clinical experience with managing women’s post axillary surgery...

Adkins, Barbara

2014-08-31T23:59:59.000Z

188

Test of time reversal symmetry with resonance neutron scattering  

Science Journals Connector (OSTI)

Discussions for using thermal neutron scattering from nuclei for symmetry measurements stem from past experiments which have observed large parity violating effects in neutron scattering. The proposed LAMPF II proton storage ring spallation neutron source is a vast improvement over the neutron source used in the parity measurements. A proposal for a time reversal symmetry measurement at the LAMPF II facility is presented. (AIP)

J. David Bowman

1986-01-01T23:59:59.000Z

189

P0301-Mogensen Performance of Reversible Solid Oxide Cells  

E-Print Network [OSTI]

that solid oxide fuel cells (SOFC) could also work in the solid oxide electrolyser cell (SOEC) mode1 P0301-Mogensen Performance of Reversible Solid Oxide Cells: A Review Mogens Mogensen1 , Søren Højgaard Jensen1,2 , Anne Hauch1,3 , Ib Chorkendorff2 and Torben Jacobsen3 1 Fuel Cell and Solid State

190

Highly Reversible Open Framework Nanoscale Electrodes for Divalent Ion Batteries  

Science Journals Connector (OSTI)

Reversible insertion of divalent ions such as magnesium would allow the creation of new battery chemistries that are potentially safer and cheaper than lithium-based batteries. ... New developments in the chem. of secondary and flow batteries as well as regenerative fuel cells are also considered. ...

Richard Y. Wang; Colin D. Wessells; Robert A. Huggins; Yi Cui

2013-10-22T23:59:59.000Z

191

Maximum Residual Energy Routing with Reverse Energy Cost  

E-Print Network [OSTI]

node consumes energy, but the receiving node does not. This assumption is not true if acknowledgementsMaximum Residual Energy Routing with Reverse Energy Cost Qiling Xie, Chin-Tau Lea, Mordecai J-The Maximum Residual Energy Path (MREP) routing has been shown an effective routing scheme for energy

Fleischer, Rudolf

192

Accepted Manuscript Title: Imaging the spread of reversible brain inactivations  

E-Print Network [OSTI]

and reversible suppression of neurophysiological activity. Interpretations of the effects of muscimol infusions demonstrated that the behavioral effects of FCM infusion are similar to the behavioral effects of muscimol infusion. FCM infusion into the rat amygdala before fear conditioning impaired both cued and contextual

Laubach, Mark

193

Time Reversal Invariance Violation in Neutron Deuteron Scattering  

E-Print Network [OSTI]

Time reversal invariance violating (TRIV) effects for low energy elastic neutron deuteron scattering are calculated for meson exchange and EFT-type of TRIV potentials in a Distorted Wave Born Approximation, using realistic hadronic strong interaction wave functions, obtained by solving three-body Faddeev equations in configuration space. The relation between TRIV and parity violating observables are discussed.

Young-Ho Song; Rimantas Lazauskas; Vladimir Gudkov

2011-04-15T23:59:59.000Z

194

Concentration of synfuel process condensates by reverse osmosis  

SciTech Connect (OSTI)

In this paper the authors will discuss the use of a novel, fouling-resistant, inside-skinned hollow-fiber membrane configuration as an energy-efficient and cost-effective alternative to conventional treatment of synfuel process condensate waters. Reverse osmosis has been used in the past only to polish condensate waters that were first treated by conventional means. In the work described in this paper, a reverse-osmosis system actually replaces traditional biotreatment of condensate waters or replaces the solvent-extraction process in the treatment train. The membranes used in this reverse-osmosis system are capable of rejecting at least 90% of the phenols as well as high percentages of other organics contained in actual process condensate waters. Furthermore, these membranes have operated for several months on synfuel condensate waters and showed no significant decrease in performance. Energy and cost estimates of a reverse-osmosis system based on such membranes will be discussed in detail, including a comparison of operating costs of this system with the operating costs of conventional treatment systems.

McCray, S.B.; Ray, R.J.

1987-01-01T23:59:59.000Z

195

ccsd00001798, Polarization Reversal of Electron Cyclotron Wave  

E-Print Network [OSTI]

cyclotron resonance heating is hoped to be the most e#11;ective method for the formation of con#12;ningccsd­00001798, version 1 ­ 20 Oct 2004 Polarization Reversal of Electron Cyclotron Wave Due waves with electron cyclotron resonance (ECR) frequency are experimentally and theoretically

196

Categorical Exclusion Determinations: National Energy Technology Laboratory  

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

April 27, 2012 April 27, 2012 CX-008292: Categorical Exclusion Determination Waste Heat Integration with Solvent Process for More Efficient Carbon Dioxide Removal from Coal-Fired Flue Gas CX(s) Applied: A11 Date: 04/27/2012 Location(s): Texas Offices(s): National Energy Technology Laboratory April 25, 2012 CX-008309: Categorical Exclusion Determination Evaluation of Solid Sorbents as a Retrofit Technology for Carbon Dioxide Capture CX(s) Applied: B3.6 Date: 04/25/2012 Location(s): Colorado Offices(s): National Energy Technology Laboratory April 25, 2012 CX-008307: Categorical Exclusion Determination Deepwater Reverse-Circulation Primary Cementing CX(s) Applied: A9 Date: 04/25/2012 Location(s): Texas Offices(s): National Energy Technology Laboratory April 25, 2012 CX-008306: Categorical Exclusion Determination

197

Zero-flux planes, flux reversals and diffusion paths in ternary and quaternary diffusion  

SciTech Connect (OSTI)

During isothermal multicomponent diffusion, interdiffusion fluxes of individual components can go to zero at zero-flux planes (ZFP) and exhibit flux reversals from one side to the other of such planes. Interdiffusion fluxes as well as the locations and compositions of ZFPs for components are determined directly from the concentration profiles of diffusion couples without the need for prior knowledge of interdiffusion coefficients. The development and identification of ZFPs is reviewed with the aid of single phase and two-phase diffusion couples investigated in the Cu-Ni-Zn system at 775/sup 0/C. ZFP locations in the diffusion zone nearly correspond to sections where the activity of a component is the same as its activity in either of the terminal alloys of a couple. Path slopes at ZFPs are uniquely dictated by the atomic mobility and thermodynamic data for the components. Discontinuous flux reversals for the components can also occur at interfaces in multiphase couples. Identification of ZFPs is also presented for diffusion in the Cu-Ni-Zn-Mn quaternary system. Analytical representation of diffusion paths for both ternary and quaternary diffusion couples is presented with the aid of characteristic path parameters.

Dayananda, M.A.

1986-05-23T23:59:59.000Z

198

Short Reversal of the Palaeomagnetic Field about 280 000 Years Ago at Long Valley, California  

Science Journals Connector (OSTI)

A reversal of the palaeomagnetic field is recorded in exposed lake sediments at Long Valley and Mono Basin in east-central California. ... reversal is estimated to be several thousand years long and 280 000 years...

Joseph C. Liddicoat; Roy A. Bailey

1989-01-01T23:59:59.000Z

199

Synthesis of reversible functions using various gate libraries and design specifications  

Science Journals Connector (OSTI)

This dissertation is devoted to efficient automated logic synthesis of reversible circuits using various gate types and initial specifications. These Reversible circuits are of interest to several modern technologies, including Nanotechnology, ...

Nouraddin Alhagi / Marek Perkowski

2010-01-01T23:59:59.000Z

200

The Use of Reverse Osmosis for the Purification of Coal Gasification Liquors  

Science Journals Connector (OSTI)

Laboratory trials have been conducted at the Westfield Development Centre to assess the potential of reverse osmosis as a stage in the treatment of ... effluent suitable for sewer or estuary discharge. Reverse osmosis

A. R. Williams

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Why sequence for reverse metabolic engineering of Escherichia coli?  

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

for reverse metabolic for reverse metabolic engineering of Escherichia coli? Bioenergy researchers are interested in harnessing microbes to produce alcohols for fuel use because these cells are relatively easy to grow and study. The bacteria Escherichia coli and Corynebacterium glutamucum, both of which have been used to produce alcohols, have already been sequenced and had their genomes annotated. For this project, mutants of E. coli and C. glutamucum will be sequenced to find out how to boost alcohol production in these bacteria for bioenergy use. E. coli Photo: CDC/Evangeline Sowers, Janice Carr Previous work with E. coli has shown that the bacterium can produce alcohols with five-carbon atoms. Further study of the bacterium's mutants could lead to the production of even more complex, longer-chain alcohols

202

Treatment of produced waters by electrocoagulation and reverse osmosis  

SciTech Connect (OSTI)

Two oil field produced waters and one coal bed methane produced water from Wyoming were treated with electrocoagulation and reverse osmosis. All three produced waters would require treatment to meet the new Wyoming Department of Environmental Quality requirements for effluent discharge into a class III or IV stream. The removal of radium 226 and oil and grease was the primary focus of the study. Radium 226 and oil and grease were removed from the produced waters with electrocoagulation. The best removal of radium 226 (>84%) was achieved with use of a non-sacrificial anode (titanium). The best removal of oil and grease (>93%) was achieved using a sacrificial anode (aluminum). By comparison, reverse osmosis removed up to 87% of the total dissolved solids and up to 95% of the radium 226.

Tuggle, K.; Humenick, M.; Barker, F.

1992-08-01T23:59:59.000Z

203

Cell cycle-regulated manganese superoxide dismutase activity via reversible  

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

cycle-regulated manganese superoxide dismutase activity via reversible cycle-regulated manganese superoxide dismutase activity via reversible phosphorylation Demet Candas University of California Davis Abstract The constant stress environment that the cells live in required the development of defense systems against free radical and radiation insults. One of the major antioxidant enzymes responsible for detoxifying free radical species is manganese superoxide dismutase (MnSOD, Sod2), which is specifically localized into the mitochondria of cells. MnSOD catalyzes the conversion of two molecules of superoxide anion into water and hydrogen peroxide, the latter of which is then further oxidized to water. The significance of the role of MnSOD activity was shown by the studies showing that the loss or deficiency of MnSOD sensitize cells to ionizing

204

Parity and Time-Reversal Violation in Atomic Systems  

E-Print Network [OSTI]

Studying the violation of parity and time-reversal invariance in atomic systems has proven to be a very effective means for testing the electroweak theory at low energy and searching for physics beyond it. Recent developments in both atomic theory and experimental methods have led to the ability to make extremely precise theoretical calculations and experimental measurements of these effects. Such studies are complementary to direct high-energy searches, and can be performed for just a fraction of the cost. We review the recent progress in the field of parity and time-reversal violation in atoms, molecules, and nuclei, and examine the implications for physics beyond the Standard Model, with an emphasis on possible areas for development in the near future.

Roberts, B M; Flambaum, V V

2014-01-01T23:59:59.000Z

205

The use of reverse osmosis water for the production of parenterals in the hospital pharmacy  

Science Journals Connector (OSTI)

Only theUnited States Pharmacopeia has included reverse osmosis as an approved process for producing ‘Water...

Drs. Ph. Jacobs

1981-01-01T23:59:59.000Z

206

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

207

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

208

Magnetic Vortex Core Reversal by Low-Field Excitations  

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

Magnetic Vortex Core Reversal by Low-Field Excitations Print Magnetic Vortex Core Reversal by Low-Field Excitations Print In micrometer-sized magnetic thin films, the magnetization typically adopts an in-plane, circular configuration known as a magnetic vortex. At the vortex core, the magnetization turns sharply out of the plane, pointing either up or down. Magnetic data storage based on this binary phenomenon is an intriguing concept, but it would require the ability to flip the vortex cores on demand. Because these structures are highly stable, very strong magnetic fields of around half a tesla (approximately one-third the field of the strongest permanent magnet) were previously thought to be necessary to accomplish this. At the ALS, a team of researchers from Germany, Belgium, and the U.S. has used time-resolved scanning transmission x-ray microscopy (STXM) to observe vortex motion and demonstrate the feasibility of using weak magnetic fields as low as 1.5 millitesla (mT) to reverse the direction of a vortex core. The observed switching mechanism, which can be understood within the framework of micromagnetic theory, gives insights into basic magnetization dynamics and their possible application to data storage technologies.

209

Single Antenna Time Reversal of Guided Waves in Pipelines  

Science Journals Connector (OSTI)

The volatile nature of natural gas makes it extremely important to ensure that distribution pipelines remain free from defects as leakage can result in explosions. Many current methods for testing buried pipelines rely on periodic excavation of a section of pipe and attachment of large acoustic or magneto-restrictive sensors. These systems while reliable suffer from a high cost-per-test ratio. Our group hopes to reduce the power constraints of such a detection system in order to allow for permanent installations that monitor the pipelines continuously. We propose to use Time Reversal a signal processing technique in order to achieve this improvement. This paper will focus on the modes generated by various acoustic probing signals and the echoes received with and without Time Reversal. We argue that TR will be most beneficial when there are several dispersive modes present a scenario avoided in conventional techniques. We will present simulation results for the analysis of wave modes in a cylindrical pipe before and after Time Reversal using PZFlex.

Nicholas O'Donoughue; Joel Harley; Jose M. Moura; Yuanwei Jin; Irving Oppenheim; Yujie Ying; Joseph States; James Garrett; Lucio Soibelman

2009-01-01T23:59:59.000Z

210

Energy Capture from Thermolytic Solutions in Microbial Reverse-Electrodialysis Cells  

Science Journals Connector (OSTI)

...and fresh waters, but potential...used reverse electrodialysis ion-exchange...wastewater treatment, and the capture...Reverse electrodialysis (RED) is...of natural waters in RED can...fresh and salt water using microbial reverse-electrodialysis electrolysis...wastewater treatment as a net energy...

Roland D. Cusick; Younggy Kim; Bruce E. Logan

2012-03-23T23:59:59.000Z

211

Reverse engineering and identification in systems biology: strategies, perspectives and challenges  

Science Journals Connector (OSTI)

...general reverse engineering problem, which...33,34]. The history of statistics reveals...departments (a detailed history is given in [35...common reverse engineering approaches can...that these reverse engineering problems are extremely...Noble [232], the history of science contains...

2014-01-01T23:59:59.000Z

212

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

213

Reversible fragile watermarking for locating tampered blocks in 2D vector maps  

Science Journals Connector (OSTI)

For 2D vector maps, obtaining good tamper localization performance and original content recovery with existing reversible fragile watermarking schemes is a technically challenging problem. Using an improved reversible watermarking method and a fragile ... Keywords: 2D vector map, Authentication, Fragile watermarking, Reversible data hiding, Tamper localization

Nana Wang; Chaoguang Men

2013-12-01T23:59:59.000Z

214

Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis cells  

E-Print Network [OSTI]

Patterned ion exchange membranes for improved power production in microbial reverse-electrodialysis August 2014 Keywords: Microbial reverse electrodialysis cell Patterned membranes Integrated spacer Internal resistance a b s t r a c t Power production in microbial reverse-electrodialysis cells (MRCs) can

215

Using microbial desalination cells to reduce water salinity prior to reverse Maha Mehanna,a  

E-Print Network [OSTI]

in the middle chamber, the MDC also has characteristics of a reverse electrodialysis (RED) processUsing microbial desalination cells to reduce water salinity prior to reverse osmosis Maha Mehanna the energy efficiency of a downstream reverse osmosis (RO) desalination system. We investigated here the use

216

Microbial reverse-electrodialysis chemical-production cell for acid and alkali production  

E-Print Network [OSTI]

Microbial reverse-electrodialysis chemical-production cell for acid and alkali production Xiuping Accepted 7 March 2013 Available online 15 March 2013 Keywords: Microbial fuel cell Reverse electrodialysis Bioenergy A new type of bioelectrochemical system, called a microbial reverse-electrodialysis chemical

217

Minimal RED Cell Pairs Markedly Improve Electrode Kinetics and Power Production in Microbial Reverse Electrodialysis Cells  

E-Print Network [OSTI]

Reverse Electrodialysis Cells Roland D. Cusick,,§ Marta Hatzell, Fang Zhang, and Bruce E. Logan ABSTRACT: Power production from microbial reverse electrodialysis cell (MRC) electrodes is substantially electrodes used in a microbial fuel cell (MFC) are placed on each side of a reverse electrodialysis (RED

218

Study, by neutron small angle scattering, of addition of an electrolyte to reversed micellar solution  

E-Print Network [OSTI]

L-455 Study, by neutron small angle scattering, of addition of an electrolyte to reversed micellar the size of reversed micelles of the ternary system Aerosol OT-n-heptane-water by small angle neutron, highly soluble in hydro- carbon substances, which may give reversed micelles in the presence of water

Paris-Sud XI, Université de

219

Author's personal copy Unexpected new phase detected in FT30 type reverse osmosis membranes using  

E-Print Network [OSTI]

Author's personal copy Unexpected new phase detected in FT30 type reverse osmosis membranes using Available online 13 July 2011 Keywords: Reverse osmosis membranes X-ray microscopy Poly phenylene diamine a b s t r a c t FT30 type thin film composite membranes used for reverse osmosis water purification

Hitchcock, Adam P.

220

Water dynamics in large and small reverse micelles: From two ensembles to collective behavior  

E-Print Network [OSTI]

Water dynamics in large and small reverse micelles: From two ensembles to collective behavior David July 2009 The dynamics of water in Aerosol-OT reverse micelles are investigated with ultrafast infrared spectroscopy of the hydroxyl stretch. In large reverse micelles, the dynamics of water are separable into two

Fayer, Michael D.

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Isotope and Ion Selectivity in Reverse Osmosis Desalination: Geochemical Tracers for Man-made Freshwater  

Science Journals Connector (OSTI)

A systematic measurement of ions and 2H/1H, 7Li/6Li, 11B/10B, 18O/16O, and 87Sr/86Sr isotopes in feed-waters, permeates, and brines from commercial reverse osmosis (RO) desalination plants in Israel (Ashkelon, Eilat, and Nitzana) and Cyprus (Larnaca) reveals distinctive geochemical and isotopic fingerprints of fresh water generated from desalination of seawater (SWRO) and brackish water (BWRO). ... The specific geochemical and isotopic fingerprints of SWRO provide a unique tool for tracing “man-made” fresh water as an emerging recharge component of natural water resources. ... O and H isotopes were determined by dual inlet and continuous flow mass spectrometry following gas–water equilibration (analytical uncertainties ±0.8‰ for ?2H and ±0.1‰ for ?18O). ...

Wolfram Kloppmann; Avner Vengosh; Catherine Guerrot; Romain Millot; Irena Pankratov

2008-05-21T23:59:59.000Z

222

Non-local kinetic transport studies of a Field-Reversed Configuration  

SciTech Connect (OSTI)

A computer code was developed and tested, during this past period, to determine the global, linear kinetic stability of a one-dimensional Field-Reversed Configuration (FRC). A difficulty in verifying the code for fully electromagnetic perturbations caused the model to be simplified so that it would be easier to verify. The changes in the model were going from a fully electromagnetic field operator to an electrostatic field operator. The resultant simplifications allowed the code to be tested against well-known, analytic results from elementary plasma physics. This report will review the physical assumptions used to model the plasma and describe the extra assumptions inherent in using an electrostatic model. In addition, the rationale for simplifying the model and the results of the test of the model will be presented.

Choi, Chan K.

1991-01-01T23:59:59.000Z

223

Categorical Exclusion Determinations: Massachusetts | Department of Energy  

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

June 2, 2010 June 2, 2010 CX-003107: Categorical Exclusion Determination Harvard Medical School, Wyss Institute - Engineering a Bacterial Reverse Fuel Cell CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Massachusetts Office(s): Advanced Research Projects Agency - Energy May 28, 2010 CX-002457: Categorical Exclusion Determination Development of Novel Non-Platinum Group Metal Electrocatalysts for Polymer Electrolyte Membrane Fuel Cell Applications CX(s) Applied: B3.6 Date: 05/28/2010 Location(s): Massachusetts Office(s): Energy Efficiency and Renewable Energy, Golden Field Office May 24, 2010 CX-002405: Categorical Exclusion Determination Fluid Flow Optimization of Aerogel Blanket Manufacturing Process CX(s) Applied: B3.6, B5.1 Date: 05/24/2010 Location(s): Massachusetts Office(s): Energy Efficiency and Renewable Energy, Golden Field Office

224

Reversible Bending Fatigue Testing on Zry-4 Surrogate Rods  

SciTech Connect (OSTI)

Testing high-burnup spent nuclear fuel (SNF) presents many challenges in areas such as specimen preparation, specimen installation, mechanical loading, load control, measurements, data acquisition, and specimen disposal because these tasks are complicated by the radioactivity of the test specimens. Research and comparison studies conducted at Oak Ridge National Laboratory (ORNL) resulted in a new concept in 2010 for a U-frame testing setup on which to perform hot-cell reversible bending fatigue testing. Subsequently, the three-dimensional finite element analysis and the engineering design of components were completed. In 2013 the ORNL team finalized the upgrade of the U-frame testing setup and the integration of the U-frame setup into a Bose dual linear motor test bench to develop a cyclic integrated reversible-bending fatigue tester (CIRFT). A final check was conducted on the CIRFT test system in August 2013, and the CIRFT was installed in the hot cell in September 2013 to evaluate both the static and dynamic mechanical response of SNF rods under simulated loads. The fatigue responses of Zircaloy-4 (Zry-4) cladding and the role of pellet pellet and pellet clad interactions are critical to SNF vibration integrity, but such data are not available due to the unavailability of an effective testing system. While the deployment of the developed CIRFT test system in a hot cell will provide the opportunity to generate the data, the use of a surrogate rod has proven quite effective in identifying the underlying deformation mechanism of an SNF composite rod under an equivalent loading condition. This paper presents the experimental results of using surrogate rods under CIRFT reversible cyclic loading. Specifically, monotonic and cyclic bending tests were conducted on surrogate rods made of a Zry-4 tube and alumina pellet inserts, both with and without an epoxy bond.

Wang, Jy-An John [ORNL; Wang, Hong [ORNL; Bevard, Bruce Balkcom [ORNL; Howard, Rob L [ORNL

2014-01-01T23:59:59.000Z

225

CX-012038: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Deepwater Reverse-Circulation Primary Cementing CX(s) Applied: A9 Date: 04/17/2014 Location(s): Texas Offices(s): National Energy Technology Laboratory

226

Reconnection during the implosion phase of field reversed configurations  

SciTech Connect (OSTI)

Magnetic field topology changes in Field Reversed Configurations (FRC's) are essential for the formation and containment of the plasma. A significant part of the FRC research program relies upon the idea that a newly formed plasma, formed on open field lines will quickly change field topology before the rapid parallel electron thermal conduction depletes the plasma energy. We have simulated the implosion dynamics of FRC formation using an axisymmetric hybrid model consisting of kinetic ions and finite resistivity fluid electrons. The LASL FRC experiments are well described by our model, which assumes quasineutrality, zero electron inertia, and no electromagnetic radiation.

Hewett, D.W.; Seyler, C.E.

1980-01-01T23:59:59.000Z

227

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

228

Synthesis and magnetic reversal of bi-conical Ni nanostructures  

SciTech Connect (OSTI)

Template synthesis in polyethylene terephthalate (PET) membranes has been used to grow hour glass shaped nickel nanowires with a constriction in the range of tens of nanometers at the center. Anisotropic magnetoresistance measurements have been performed on a single nanowire to follow magnetization reversal of the structure. The results are explained via 3D micromagnetic simulations showing the appearance of a complex vortex state close to the constriction whose propagation depends on the angle between the cone axis and the applied field. The interest of this original growth process for spintronics is discussed.

Biziere, N. [Laboratoire des Solides Irradies, CEA/CNRS/Ecole Polytechnique, Ecole Polytechnique, 91128 Palaiseau Cedex (France); CEMES-CNRS, 29 Rue Jeanne Marvig, 31055 Toulouse (France); Lassalle Ballier, R.; Viret, M. [Service de Physique de l'Etat Condense, DSM/IRAMIS/SPEC, CEA Saclay URA CNRS 2464, 91191 Gif-Sur-Yvette Cedex (France); Clochard, M. C.; Wade, T. L.; Wegrowe, J. E. [Laboratoire des Solides Irradies, CEA/CNRS/Ecole Polytechnique, Ecole Polytechnique, 91128 Palaiseau Cedex (France); Balanzat, E. [CIMAP, Unite Mixte CEA-CNRS-ENSICAEN, F-14070 Caen Cedex 5 (France)

2011-09-15T23:59:59.000Z

229

Fast reverse osmosis using boron nitride and carbon nanotubes  

Science Journals Connector (OSTI)

We investigate reverse osmosis through commonly used polymeric and advanced inorganic nanotube based semipermeable membranes by performing nonequilibrium molecular dynamics simulations. Simulations indicate that there is a significantly higher water flux through boron-nitride nanotube (BNNT) and carbon nanotube(CNT) compared to a polymethyl methacrylate (PMMA) pore and a slightly higher water flux through BNNT as compared to CNT. The calculated permeation coefficient is in reasonable agreement with the theoretical single-file “hopping” model. Potential of mean force analysis indicates that the irregular nature of PMMA pore surface can cause significant localized energy barriers inside the pore thereby reducing the water flux.

M. E. Suk; A. V. Raghunathan; N. R. Aluru

2008-01-01T23:59:59.000Z

230

A comparison of reverse osmosis membrane cleaning methods  

SciTech Connect (OSTI)

Testing was conducted at TNX to evaluate the reverse osmosis (RO) cleaning methods in use at the F/H Effluent Treatment Facility (ETF). The present ETF membrane cleaning protocol involves a low-pressure-no-permeation method using NAOH. This work has examined the effectiveness of the present ETF method, due to the lack of improvement following the cleanings sometimes observed. This study has evaluated both low pressure (15--20 psi with no permeation) and high pressure (200 psi with permeation) cleaning methods with sequential cleanings using NAOH and Filmtec Alkaline Cleaner. The importance of the cleaning sequence with these two chemicals was also examined.

Siler, J.L.

1992-01-09T23:59:59.000Z

231

Two-Stage Magnetization Reversal in Exchange Biased Bilayers  

SciTech Connect (OSTI)

MnF{sub 2}/Fe bilayers exhibit asymmetric magnetization reversal that occurs by coherent rotation on one side of the loop and by nucleation and propagation of domain walls on the other side of the loop. Here, we show by polarized neutron reflectometry, magnetization, and magnetotransport measurements that for samples with good crystalline ''quality'' the rotation is a two-stage process, due to coherent rotation to a stable state perpendicular to the cooling field direction. The result is remarkably asymmetrically shaped hysteresis loops.

Leighton, C.; Fitzsimmons, M. R.; Yashar, P.; Hoffmann, A.; Nogues, J.; Dura, J.; Majkrzak, C. F.; Schuller, Ivan K.

2001-05-07T23:59:59.000Z

232

Reverse?field reciprocity for conducting specimens in magnetic fields  

Science Journals Connector (OSTI)

A new static?electromagnetic reciprocity principle is presented extending ordinary resistive reciprocity to the case of nonzero magnetic fields by requiring the magnetic field to be reversed when the reciprocal measurement is made. The principle is supported by measurements on various types of specimens including those which exhibit the quantum?Hall effect. A derivation using elementary electromagnetic theory shows that the principle will hold provided only that the specimen is electrically linear (Ohmic) and that the Onsager form for the conductivity tensor applies throughout. The principle has important implications for electrical measurements on semiconductors in applied?magnetic fields.

H. H. Sample; W. J. Bruno; S. B. Sample; E. K. Sichel

1987-01-01T23:59:59.000Z

233

Reversed Gravitational Acceleration for High-speed Particles  

E-Print Network [OSTI]

Examination of the free-fall motion of particles of extremely high-speed in the Schwarzschild geometry reveals that the gravitational acceleration of such particles is reversed when measured in Schwarzschild coordinates. High-speed particles decelerate when moving radially downward, and they accelerate when moving upward. The onset of this abnormal behavior occurs at a speed of 1/Sqrt(3) times the local value of the speed of light. However, the gravitational force always remains attractive. PACS numbers: 04.20.-q, 04.20.Cv, 01.65+g

Hans C. Ohanian

2011-02-14T23:59:59.000Z

234

Time reversal invariance - a test in free neutron decay  

SciTech Connect (OSTI)

Time reversal invariance violation plays only a small role in the Standard Model, and the existence of a T-violating effect above the predicted level would be an indication of new physics. A sensitive probe of this symmetry in the weak interaction is the measurement of the T-violating ''D''-correlation in the decay of free neutrons. The triple-correlation D{sigma}{sub n}{center_dot}p{sub e} x p{sub v} involves three kinematic variables, the neutron spin, electron momentu, and neutrino (or proton) momentum, and changes sign under time reversal. This experiment detects the decay products of a polarized cold neutron beam with an octagonal array of scintillation and solid-state detectors. Data from first run at NIST's Cold Neutron Research Facility give a D-coefficient of -0.1 {+-} 1.3(stat.) {+-} 0.7(syst) x 10{sup -3}. This measurement has the greatest bearing on extensions to the Standard model that incorporate leptoquarks, although exotic fermion and lift-right symmetric models also allow a D as large as the present limit.

Lising, Laura J.

1999-05-18T23:59:59.000Z

235

Innovative wastewater treatment using reversing anaerobic upflow system (RAUS)  

SciTech Connect (OSTI)

Anaerobic processes are widely popular in the treatment of a variety of industrial wastewaters since the development of such high rate treatment processes like upflow anaerobic sludge blanket (UASB), anaerobic filter, and the fluidized-bed process. In order to devise a low cost/high technology system so that it would provide an economical solution to environmentally sound pollution control, the Reversing Anaerobic Upflow System (RAUS) was developed. The system consists of two anaerobic reactors connected to each other. At the beginning, one reactor is fed upwards with wastewater while the other acts as a settling tank. After a set interval of time, the flow is reversed such that the second reactor is fed with wastewater and the first one acts as the settler. This particular feeding pattern had shown improved settling characteristics and granulation of methanogenic biomass from research carried out at the Hannover University with different wastewaters. The biological reaction vessels to which wastewater is introduced intermittently functions basically as a sludge blanket type reactor although the costly integrated settling devices present in a typical UASB system are avoided. The RAUS combines three principle reactor configurations: (1) conventional with sludge recycling; (2) fill and draw or sequential batch, inflow maintained constant during feeding; (3) upflow anaerobic sludge blanket. A pilot scale RAUS was operated for 400 days using distillery wastewater consisting of molasses slop and bottle washing water mixed in the ratio 1:1. This paper discusses the results of pilot scale experiments.

Basu, S.K. [Univ. of Manitoba, Winnipeg, Manitoba (Canada). Environmental Engineering Div.

1996-11-01T23:59:59.000Z

236

Polymorphic single crystal {r_reversible} single crystal transition in K{sub 0.975}Rb{sub 0.025}NO{sub 3}  

SciTech Connect (OSTI)

Polymorphic transformations in K{sub 0.975}Rb{sub 0.025}NO{sub 3} single crystals have been investigated by optical microscopy and X-ray diffraction. The equilibrium temperature between modifications II and III has been determined. It is established that the crystal growth at II {r_reversible} III polymorphic transitions is accompanied by the formation and growth of daughter-modification nuclei in the matrix crystal.

Asadov, Yu. G., E-mail: yusifasadov@rambler.ru; Nasirov, E. V. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2010-09-15T23:59:59.000Z

237

On the potential of forward osmosis to energetically outperform reverse osmosis desalination  

Science Journals Connector (OSTI)

Abstract We provide a comparison of the theoretical and actual energy requirements of forward osmosis and reverse osmosis seawater desalination. We argue that reverse osmosis is significantly more energy efficient and that forward osmosis research efforts would best be fully oriented towards alternate applications. The underlying reason for the inefficiency of forward osmosis is the draw-dilution step, which increases the theoretical and actual energy requirements for draw regeneration. As a consequence, for a forward osmosis technology to compete with reverse osmosis, the regeneration process must be significantly more efficient than reverse osmosis. However, even considering the optimisation of the draw solution and the benefits of reduced fouling during regeneration, the efficiency of an optimal draw regeneration process and of reverse osmosis are unlikely to differ significantly, meaning the energy efficiency of direct desalination with reverse osmosis is likely to be superior.

Ronan K. McGovern; John H. Lienhard V

2014-01-01T23:59:59.000Z

238

Magnetic field reversals and long-time memory in conducting flows  

E-Print Network [OSTI]

Employing a simple ideal magnetohydrodynamic model in spherical geometry,we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment. The statistical character of the model is similar to that of terrestrial magnetic field reversals, with the similarity being stronger when rotation is present.The connection between long time correlations, $1/f$ noise, and statistics of reversals is supported, consistent with earlier suggestions.

Dmitruk, P; Pouquet, A; Servidio, S; Matthaeus, W H

2014-01-01T23:59:59.000Z

239

Progress on the Development of Reversible SOFC Stack Technology  

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

the Development of the Development of Reversible SOFC Stack Technology Presented by: Casey Brown 19 April 2011 Copyright © 2011 Versa Power Systems - All Rights Reserved Versa Power Systems * Versa Power Systems is a developer of planar solid oxide fuel cells (SOFCs) * Privately held company headquartered in Littleton, Colorado, United States * SOFC development facility in Calgary, Alberta, Canada * Activities in both stationary and mobile SOFC development Copyright © 2011 Versa Power Systems - All Rights Reserved * Anode supported cells * Operating temperature range of 650 C to 800°C * Ferritic stainless steel sheet interconnect * Cross-flow gas delivery * Stack can be integrated into stack towers for various power applications VPS Planar SOFC Cell and Stack Anode Cathode Electrolyte

240

Nanofiltration/reverse osmosis for treatment of coproduced waters  

SciTech Connect (OSTI)

Current high oil and gas prices have lead to renewed interest in exploration of nonconventional energy sources such as coal bed methane, tar sand, and oil shale. However oil and gas production from these nonconventional sources has lead to the coproduction of large quantities of produced water. While produced water is a waste product from oil and gas exploration it is a very valuable natural resource in the arid Western United States. Thus treated produced water could be a valuable new source of water. Commercially available nanofiltration and low pressure reverse osmosis membranes have been used to treat three produced waters. The results obtained here indicate that the permeate could be put to beneficial uses such as crop and livestock watering. However minimizing membrane fouling will be essential for the development of a practical process. Field Emission Scanning Electron Microscopy imaging may be used to observe membrane fouling.

Mondal, S.; Hsiao, C.L.; Wickramasinghe, S.R. [Colorado State University, Ft Collins, CO (United States)

2008-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

ELECTRODE DEVELOPMENT FOR REVERSIBLE SOLID OXIDE FUEL CELLS  

SciTech Connect (OSTI)

The reversibility of the electrodes for a solid oxide fuel cell with an yttria-stabilized zirconia (YSZ) electrolyte was examined using electrochemical impedance spectroscopy and current interrupt methods. The fuel electrodes were nickel/zirconia cermet and lanthanum-doped strontium titanate/doped ceria composites. The air electrodes were lanthanum strontium ferrite (LSF) and lanthanum strontium copper ferrite (LSCuF). Under the experimental conditions studied all four electrodes were able to operate in both the fuel cell and electrolyzer modes. The titanate/ceria fuel electrode performed substantially better in the electrolyzer mode than state-of-art Ni-YSZ. Moreover, it showed slightly higher activity for water electrolysis as compared to hydrogen oxidation. Air electrodes were less active in the electrolyzer than fuel cell modes. LSF typically provided higher overpotential losses in both modes than copper-substituted LSF. Changes in the defect chemistry of electrode materials under cathodic and anodic polarization are discussed.

Marina, Olga A.; Coffey, Greg W.; Pederson, Larry R.; Rieke, Peter C.; Thomsen, Ed C.; Williams, Mark C.

2004-08-06T23:59:59.000Z

242

Reverse time migration in tilted transversely isotropic media  

SciTech Connect (OSTI)

This paper presents a reverse time migration (RTM) method for the migration of shot records in tilted transversely isotropic (TTI) media. It is based on the tilted TI acoustic wave equation that was derived from the dispersion relation. The RTM is a full depth migration allowing for velocity to vary laterally as well as vertically and has no dip limitations. The wave equation is solved by a tenth-order finite difference scheme. Using 2D numerical models, we demonstrate that ignoring the tilt angle will introduce both lateral and vertical shifts in imaging. The shifts can be larger than 0.5 wavelength in the vertical direction and 1.5 wavelength in the lateral direction.

Zhang, Linbing; Rector III, James W.; Hoversten, G. Michael

2004-07-01T23:59:59.000Z

243

Reverse osmosis separation of radiocontaminants from ammonium diuranate effluents  

SciTech Connect (OSTI)

A reverse osmosis process has been found to be effective for the separation of radiocontaminants from ammonium diuranate effluents in a uranium metal plant. Pilot-plant-scale experiments were conducted using cellulosic membranes in a plate module system and actual plant effluents containing more than about 40,000 ppm of ammonium and nitrate species and having radiocontaminants corresponding to specific activities of about 10[sup [minus]3] Ci/m[sup 3] beta/gamma emitters. The results indicated that more than 95% by volume of the treated effluents were within disposal limits, while the remaining contained the concentrate, which can be treated for possible containment. 6 refs., 2 figs., 5 tabs.

Prabhakar, S.; Misra, B.M.; Roy, S.B.; Meghal, A.M.; Mukherjee, T.K. (Bhabha Atomic Research Centre, Bombay (India))

1994-05-01T23:59:59.000Z

244

Pumping single-file colloids: Absence of current reversal  

E-Print Network [OSTI]

We consider the single-file motion of colloidal particles interacting via short-ranged repulsion and placed in a traveling wave potential, that varies periodically in time and space. Under suitable driving conditions, a directed time-averaged flow of colloids is generated. We obtain analytic results for the model using a perturbative approach to solve the Fokker-Planck equations. The predictions show good agreement with numerical simulations. We find peaks in the time-averaged directed current as a function of driving frequency, wavelength and particle density and discuss possible experimental realizations. Surprisingly, unlike a closely related exclusion dynamics on a lattice, the directed current in the present model does not show current reversal with density. A linear response formula relating current response to equilibrium correlations is also proposed.

Debasish Chaudhuri; Archishman Raju; Abhishek Dhar

2014-09-24T23:59:59.000Z

245

Strain-induced time-reversal odd superconductivity in graphene  

E-Print Network [OSTI]

Time-reversal symmetry breaking superconductors are exotic phases of matter with fascinating properties, which are, however, encountered rather sparsely. Here we identify the possibility of realizing such a superconducting ground state that exhibits an $f+is$ pairing symmetry in strained graphene. Although the underlying attractive interactions need to be sufficiently strong and comparable in pristine graphene to support such pairing state, we argue that strain can be conducive for its formation even for weak interactions. We show that quantum-critical behavior near the transition is controlled by a multicritical point, characterized by various critical exponents computed here in the framework of an $\\epsilon$-expansion near four spacetime dimensions. Furthermore, a vortex in this mixed superconducting state hosts a pair of Majorana fermions supporting a quartet of insulating and superconducting orders, among which topologically nontrivial quantum spin Hall insulator. These findings suggest that strained graphene could provide a platform for the realization of exotic superconducting states of Dirac fermions.

Bitan Roy; Vladimir Juricic

2014-07-31T23:59:59.000Z

246

E-Print Network 3.0 - asymmetric reverse transcription Sample...  

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

Miguel M. Fonseca,* David Posada, and D. James Harris* Summary: A, Leger N, Deutsch J. 2005. Evidence for multiple reversals of asymmetric mutational constraints... of...

247

Melanomas resist T-cell therapy through inflammation-induced reversible dedifferentiation  

Science Journals Connector (OSTI)

... carrying an oncogenic CDK4 mutation. Am. J. Pathol. 169, 665–672 (2006)Overwijk, W. W. et al. Tumor regression and autoimmunity after reversal of a functionally ...

Jennifer Landsberg, Judith Kohlmeyer, Marcel Renn, Tobias Bald, Meri Rogava, Mira Cron, Martina Fatho, Volker Lennerz, Thomas Wölfel, Michael Hölzel, et al.

2012-10-10T23:59:59.000Z

248

Reversible Switching of an Optical Gate Using Phase-Change Material and Si Waveguide  

Science Journals Connector (OSTI)

Optical gate switch that uses Ge2Sb2Te5phase-change material was fabricated and the reversible switching has been...

Ikuma, Yuichiro; Shoji, Yuya; Kuwahara, Masashi; Wang, Xiaomin; Kintaka, Kenji; Kawashima, Hitoshi; Tanaka, Daiki; Tsuda, Hiroyuki

249

Reversible CO Binding Enables Tunable CO/H2 and CO/N2 Separations...  

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

2,5-dioxido-1,4-benzenedicarboxylate) structure type are demonstrated to bind carbon monoxide reversibly and at high capacity. Infrared spectra indicate that, upon coordination of...

250

E-Print Network 3.0 - aot reverse micelles Sample Search Results  

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

the size of reversed micelles of the ternary system Aerosol OT-n-heptane-water by small angle neutron... , highly soluble in hydro- carbon substances, which may give...

251

Natural Convection in a Horizontal Non-Flow-Through Reverse-Osmosis Cell  

Science Journals Connector (OSTI)

Features of the mass transfer in a horizontal non-flow-through reverse-osmosis cell are considered. It is concluded that...

N. B. Kirichenko

252

Removal of Emerging Contaminants in Water Treatment by Nanofiltration and Reverse Osmosis  

Science Journals Connector (OSTI)

The general rules established in abundant studies on removal of conventional pollutants from waters by reverse osmosis and nanofiltration were reconsidered in this contribution...

Branko Kunst; Krešimir Košuti?

2008-01-01T23:59:59.000Z

253

What determines cell size?  

E-Print Network [OSTI]

as: Marshall WF, et al. : What determines cell size? BMC7007/10/101 FORUM Open Access What determines cell size?biologists have been wondering what determines the size of

2012-01-01T23:59:59.000Z

254

MODIFIED REVERSE OSMOSIS SYSTEM FOR TREATMENT OF PRODUCED WATERS  

SciTech Connect (OSTI)

This report describes work performed during the second year of the project ''Modified reverse osmosis system for treatment of produced waters.'' We performed two series of reverse osmosis experiments using very thin bentonite clay membranes compacted to differing degrees. The first series of 10 experiments used NaCl solutions with membranes that ranged between 0.041 and 0.064mm in thickness. Our results showed compaction of such ultra-thin clay membranes to be problematic. The thickness of the membranes was exceeded by the dimensional variation in the machined experimental cell and this is believed to have resulted in local bypassing of the membrane with a resultant decrease in solute rejection efficiency. In two of the experiments, permeate flow was varied as a percentage of the total flow to investigate results of changing permeate flow on solute rejection. In one experiment, the permeate flow was varied between 2.4 and 10.3% of the total flow with no change in solute rejection. In another experiment, the permeate flow was varied between 24.6 and 52.5% of the total flow. In this experiment, the solute rejection rate decreased as the permeate occupied greater fractions of the total flow. This suggests a maximum solute rejection efficiency for these clay membranes for a permeate flow of between 10.3 and 24.6% of the total; flow. Solute rejection was found to decrease with increasing salt concentration and ranged between 62.9% and 19.7% for chloride and between 61.5 and 16.8% for sodium. Due to problems with the compaction procedure and potential membrane bypassing, these rejection rates are probably not the upper limit for NaCl rejection by bentonite membranes. The second series of four reverse osmosis experiments was conducted with a 0.057mm-thick bentonite membrane and dilutions of a produced water sample with an original TDS of 196,250 mg/l obtained from a facility near Loco Hill, New Mexico, operated by an independent. These experiments tested the separation efficiency of the bentonite membrane for each of the dilutions. We found that membrane efficiency decreased with increasing solute concentration and with increasing TDS. The rejection of SO{sub 4}{sup 2-} was greater than Cl{sup -}. This may be because the SO{sub 4}{sup 2-} concentration was much lower than the Cl{sup -} concentration in the waters tested. The cation rejection sequence varied with solute concentration and TDS. The solute rejection sequence for multi-component solutions is difficult to predict for synthetic membranes; it may not be simple for clay membranes either. The permeate flows in our experiments were 4.1 to 5.4% of the total flow. This suggests that very thin clay membranes may be useful for some separations. Work on development of a spiral-wound clay membrane module found that it is difficult to maintain compaction of the membrane if the membrane is rolled and then inserted in the outer tube. A different design was tried using a cylindrical clay membrane and this also proved difficult to assemble with adequate membrane compaction. The next step is to form the membrane in place using hydraulic pressure on a thin slurry of clay in either water or a nonpolar organic solvent such as ethanol. Technology transfer efforts included four manuscripts submitted to peer-reviewed journals, two abstracts, and chairing a session on clays as membranes at the Clay Minerals Society annual meeting.

T.M. Whitworth; Liangxiong Li

2002-09-15T23:59:59.000Z

255

A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic Generator  

E-Print Network [OSTI]

A Regression Algorithm for the Smart Prognosis of a Reversed Polarity Fault in a Photovoltaic database containing sample data is used for simulation purposes. Keywords--Photovoltaic generator, SVR, k-NNR, reversed polarity fault, diagnosis, prognosis. NOMENCLATURE PV = Photovoltaic; SVM = Support Vector

Paris-Sud XI, Université de

256

Magnetization reversal via single and double vortex states in submicron Permalloy ellipses P. Vavassori,1  

E-Print Network [OSTI]

Magnetization reversal via single and double vortex states in submicron Permalloy ellipses P University, Ithaca, New York, USA Received December 5, 2003; published 3 June 2004 The magnetization reversal of the magnetic field and to occur via the formation of one or two vortices; the one vortex state is nucleated

Metlushko, Vitali

257

Advanced Materials for Reversible Solid Oxide Fuel Cell (RSOFC), Dual Mode Operation with Low  

E-Print Network [OSTI]

Advanced Materials for Reversible Solid Oxide Fuel Cell (RSOFC), Dual Mode Operation with Low, Director Product Development & Federal Programs #12;Project Background f Reversible Solid Oxide Fuel Cells:Water The VPS Storage f Wind Fuel Cell / f Solar Electrolyzer Continuous SOFC Intermittent Power Power

258

High Efficiency in Energy Generation from Salinity Gradients with Reverse Electrodialysis  

Science Journals Connector (OSTI)

High Efficiency in Energy Generation from Salinity Gradients with Reverse Electrodialysis ... Reverse electrodialysis; Renewable energy; Efficiency; Entropy; Salinity gradient energy; Ion exchange membranes ... power from the sequential flow of fresh and saline water, without the need for auxiliary processes or converters. ...

David A. Vermaas; Joost Veerman; Ngai Yin Yip; Menachem Elimelech; Michel Saakes; Kitty Nijmeijer

2013-08-02T23:59:59.000Z

259

Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing and  

E-Print Network [OSTI]

1 Advanced Industrial Archaeology: A new reverse-engineering process for contextualizing.bernard@irccyn.ec-nantes.fr, michel.cotte@univ-nantes.fr Abstract Since virtual engineering has been introduced inside industries. Keywords reverse-engineering, 3D digitalization, CAD, Advanced Industrial Archaeology, technical heritage 1

Paris-Sud XI, Université de

260

Department of Industrial Engineering Fall 2011 Transmission Component Reverse Engineering and Process Planning  

E-Print Network [OSTI]

PENNSTATE Department of Industrial Engineering Fall 2011 Transmission Component Reverse Engineering to fabricate the parts in the Industrial Engineering Department Factory for Advanced Manufacturing Education of the transmission to reverse engineer and develop process plans for efficient fabrication in a low volume setting

Demirel, Melik C.

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

RESPONSE OF R.C. BRIDGE PIERS TO LARGE DEFLECTIION REVERSALS  

E-Print Network [OSTI]

I 2 3,4 RESPONSE OF R.C. BRIDGE PIERS TO LARGE DEFLECTIION REVERSALS By Higai, T.I, Rizkalla, S.H.2, Saadat, F.3, Ben Omran, H.4 Department of Civil Engineering University of Manitoba Winnipeg, Manitoba the behaviour of typical bridge piers subjected to deflection reversals large enough to cause extensive yielding

262

Replication of the retroviral terminal repeat sequence during in vivo reverse transcription.  

Science Journals Connector (OSTI)

...strand transfer. Studies on the plus-strand transfer step of reverse transcription have suggested that transfer can pro- ceed prior to the complete reverse transcription of the primer-binding site from the tRNA (23). This is similar to our results...

C A Ramsey; A T Panganiban

1993-07-01T23:59:59.000Z

263

Reversibility and efficiency in electrocatalytic energy conversion and lessons from enzymes  

Science Journals Connector (OSTI)

...development of a reversible electrocatalyst for H 2 production...functions as a reversible electrocatalyst for H 2 production...enzyme function and the development of catalytic efficiency...reduction at a fuel-cell cathode . J Phys Chem B 108 : 17886...a highly efficient electrocatalyst for the oxygen reduction...

Fraser A. Armstrong; Judy Hirst

2011-01-01T23:59:59.000Z

264

Green's function for reversible geminate reaction with volume reactivity Svetlana S. Khokhlova and Noam Agmon  

E-Print Network [OSTI]

Green's function for reversible geminate reaction with volume reactivity Svetlana S. Khokhlova OF CHEMICAL PHYSICS 137, 184103 (2012) Green's function for reversible geminate reaction with volume can occur within a finite reaction sphere. We obtain the Green's function solution for the Laplace

Agmon, Noam

265

Removal of N-Nitrosamines and Their Precursors by Nanofiltration and Reverse Osmosis Membranes  

E-Print Network [OSTI]

Removal of N-Nitrosamines and Their Precursors by Nanofiltration and Reverse Osmosis Membranes Yu and brackish water reverse osmosis BWRO membranes was evaluated using a bench-scale cross-flow filtration; Osmosis. Introduction The occurrence of nitrosamines in drinking water and their sources Fleming et al

Huang, Ching-Hua

266

Some Results Bearing on the Value of Improvements of Membranes for Reverse Osmosis  

SciTech Connect (OSTI)

This analysis evaluates the potential economic benefits that could result from the improvements in the permeability of membranes for reverse osmosis. The discussion provides a simple model of the operation of a reverse osmosis plant. It examines the change in the operation that might result from improvements in the membrane and computes the cost of water as a function of the membrane permeability.

Lamont, A

2006-03-08T23:59:59.000Z

267

Thermodynamics and Relativity: A Revised Interpretation of the Concepts of Reversibility and Irreversibility  

E-Print Network [OSTI]

It is generally admitted in thermodynamics that, for a given change in volume, the work done by a system is greater in conditions of reversibility than in conditions of irreversibility. If the basic conventions of physics are strictly respected, it seems that this proposition needs to be reversed. Beyond this formal aspect, the discussion consolidates the idea that thermodynamics and relativity are closely connected.

Jean-Louis Tane

2007-10-30T23:59:59.000Z

268

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer YONGGANG WANG AND BART GEERTS  

E-Print Network [OSTI]

Estimating the Evaporative Cooling Bias of an Airborne Reverse Flow Thermometer YONGGANG WANG form 24 June 2008) ABSTRACT Airborne reverse flow immersion thermometers were designed to prevent in cloud is surmised because air decelerates into the thermometer housing, and thus is heated and becomes

Geerts, Bart

269

U.S. DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND REVERSAL  

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

DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND REVERSAL OF THE BOARD'S RULING ON THE MOTION TO WITHDRAW U.S. DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND REVERSAL OF THE BOARD'S RULING ON THE MOTION TO WITHDRAW U.S. DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND REVERSAL OF THE Nuclear Regulatory Commission's Atomic Safety and Licensing Board's (BOARD) RULING ON THE MOTION TO WITHDRAW. Brief submitted pursuant to the June 30 and July 14, 2010 Orders of the Commission's Secretary. DOE requests that the Commission review and reverse the Board's Order for the reasons stated in DOE's initial and reply briefs. U.S. DEPARTMENT OF ENERGY'S REPLY BRIEF IN SUPPORT OF REVIEW AND REVERSAL OF THE BOARD'S RULING ON THE MOTION TO WITHDRAW

270

Radiative reverse shock laser experiments relevant to accretion processes in cataclysmic variables  

SciTech Connect (OSTI)

We discuss the production of radiative reverse shocks in experiments at the Omega-60 laser facility. The ability of this high-intensity laser to impart large energy densities on micron-thin foils makes it feasible to create supersonic plasma flows. Obtaining a radiative reverse shock in the laboratory requires a sufficiently fast flow (?100 km/s) of a material whose opacity is large enough to produce energetically significant emission from experimentally achievable shocked layers. The reverse shock forms in the flow once it is impeded. This paper presents the first radiographic data of normal incidence, reverse shockwaves. These experiments are primarily motivated by the contribution of radiative reverse shock waves to the evolving dynamics of the cataclysmic variable (CV) system in which they reside. We show similarity properties to suggest that the experimental production of radiative reserve shocks in the laboratory may be scalable to such astrophysical systems.

Krauland, C. M.; Drake, R. P.; Kuranz, C. C.; Sweeney, R.; Grosskopf, M.; Klein, S.; Gillespie, R.; Keiter, P. A. [Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143 (United States)] [Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109-2143 (United States); Loupias, B.; Falize, E. [CEA-DAM-DIF, F-91297 Arpajon (France)] [CEA-DAM-DIF, F-91297 Arpajon (France)

2013-05-15T23:59:59.000Z

271

The success of reverse logistics in supporting the environment: the case of the computer industry  

Science Journals Connector (OSTI)

Reverse logistics deals with the movement of products from consumers back to the producers. It is the process of collecting these used products, breaking them down into their initial components and distributing them to be reused, recycled or disposed of. The remanufacturing of used products has become accepted and identified as an advantage for corporations. This paper provides content analysis of scientific literature written on the topic of reverse logistics. In addition, we provide an overview of particular issues such as the environmental and economic benefits, the relevant costs incurred and savings, location, transportation and third-party demanufacturing. Furthermore, this study provides examples of how Dell and IBM have implemented reverse logistics in their corporations. Computer companies are one such industry, which reverse logistics has had an impact on. Research has shown that the use of reverse logistics has created a competitive advantage for companies.

Seyed-Mahmoud Aghazadeh

2008-01-01T23:59:59.000Z

272

Reverse osmosis for removing synthetic organics from drinking water: a cost and performance evaluation  

SciTech Connect (OSTI)

Reverse osmosis for removing organic compounds from drinking water has considerable promise. Bench and pilot plant studies on actual waters have shown that several organics proposed for regulation can be removed by reverse osmosis. As membrane technology improves, rejection of more difficult to remove compounds is expected to improve. Also, smaller volumes of concentrate are expected to be produced that can be handled more cost-effectively. One major concern with the use of reverse osmosis is concentrate disposal, which may increase the overall cost of treatment and disposal. The cost of reverse osmosis is very sensitive to such factors as recovery, economies of scale, systems configuration, membrane type, and electric power cost. In certain situations, reverse osmosis is a viable treatment option that is not cost-prohibitive.

Lykins, B.W.; Clark, R.M.; Fronk, C.A.

1988-06-01T23:59:59.000Z

273

Determination of the Transient Response Characteristics of the Air-Source Heat Pump During the Reverse Cycle Defrost  

E-Print Network [OSTI]

Laboratory Department of Mechanical Engineering Texas A&M University ESL-TR-88/06-04 GLOSSARY OF TERMS AMCA Air Movement and Control Association ARI Air Conditioning and Refrigeration Institute ASHRAE American Society of Heating, Refrigerating and Air... expansion valve wg Water gauge 11 TABLE OF CONTENTS CHAPTER PAGE GLOSSARY OF TERMS ii 1 INTRODUCTION 1.1 2 LITERATURE REVIEW 2.1 Performance Measurement 2.1 Transient Performance 2.2 Cycling Losses 2.5 Frosting Losses 2.6 Defrosting Losses 2.8 Summary 2.15 3...

O'Neal, D. L.; Anand, N. K.; Peterson, K. T.; Schleising, S.

1988-01-01T23:59:59.000Z

274

Rapid sequence determination of late simian virus 40 16S mRNA leader by using inhibitors of reverse transcriptase  

Science Journals Connector (OSTI)

...The fragments were fractionated by RPC5 (gift from Bruce Roe) column chromatography (19-21). Digestion of the Alu I...Res. 5, 13-21. 22. Deely, R. G., Gordon, J. I., Burns, A. T., Mullinex, K. P., Bina- Stein, M. & Goldberger...

M Bina-Stein; M Thoren; N Salzman; J A Thomspon

1979-01-01T23:59:59.000Z

275

CX-012029: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Deepwater Reverse-Circulation Primary Cementing CX(s) Applied: A9, A11, B3.6 Date: 04/21/2014 Location(s): Texas Offices(s): National Energy Technology Laboratory

276

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak Experiment  

Science Journals Connector (OSTI)

The initial results of coaxial co- and counter-helicity spheromak merging studies at the Swarthmore Spheromak Experiment (SSX) [M. R. Brown Phys. Plasmas 6 1717 (1999)] are reported. In its new configuration SSX is optimized to study field reversed configuration (FRC) formation and stability by counter-helicity spheromak merging. A pair of midplane coils magnetically restricts the merging process to determine how the stability of the resulting magnetic configuration depends upon the quantity of toroidal flux remaining from the initial spheromaks. The diagnostic set at SSX featuring the capability of measuring up to 600 magnetic field components at 800 ns time resolution permits detailed studies of the dynamic three-dimensional magnetic structures produced during these experiments. A compact array of magnetic probes examines the local reconnection process while a distributed array of probes examines global magnetic structure. Counter-helicity merging produces a FRC that persists for several Alfvén times although the oppositely directed toroidal field of the initial spheromaks does not completely annihilate. The m=1 (toroidal) mode dominates late in the evolution and is consistent with the tilt instability. Co-helicity merging produces a single elongated spheromak that rapidly tilts.

C. D. Cothran; A. Falk; A. Fefferman; M. Landreman; M. R. Brown; M. J. Schaffer

2003-01-01T23:59:59.000Z

277

Reverse Shock Emission and Ionization Break Out Powered by Post-merger Millisecond Magnetars  

E-Print Network [OSTI]

There is accumulating evidence that at least a fraction of binary neutron star mergers result in rapidly spinning magnetars, with subrelativistic neutron-rich ejecta as massive as a small fraction of solar mass. The ejecta could be heated continuously by the Poynting flux emanated from the central magnetars. Such Poynting flux could become lepton-dominated so that a reverse shock develops. It was demonstrated that such a picture is capable of accounting for the optical transient PTF11agg (Wang & Dai 2013b). In this paper we investigate the X-ray and ultraviolet (UV) radiation as well as the optical and radio radiation studied by Wang & Dai (2013b). UV emission is particularly important because it has the right energy to ionize the hot ejecta at times $t\\lesssim 600$ s. It is thought that the ejecta of binary neutron star mergers are a remarkably pure sample of r-process material, about which our understanding is still incomplete. In this paper we evaluate the possibility of observationally determining...

Wang, Ling-Jun; Yu, Yun-Wei

2015-01-01T23:59:59.000Z

278

Kinetic Effects on the Stability Properties of Field-reversed Configurations: I. Linear Stability  

SciTech Connect (OSTI)

New computational results are presented which advance the understanding of the stability properties of the Field-Reversed Configuration (FRC). We present results of hybrid and two-fluid (Hall-MHD) simulations of prolate FRCs. The n = 1 tilt instability mechanism and growth rate reduction mechanisms are investigated in detail including resonant particle effects, finite Larmor radius and Hall stabilization, and profile effects. It is shown that the Hall effect determines the mode rotation and the change in the linear mode structure in the kinetic regime; however, the reduction in the growth rate is mostly due to finite Larmor radius effects. Resonant wave-particle interactions are studied as a function of (a) elongation, (b) the kinetic parameter S*, which is proportional to the ratio of the separatrix radius to the thermal ion Larmor radius, and (c) the separatrix shape. It is demonstrated that, contrary to the usually assumed stochasticity of the ion orbits in the FRC, a large fraction of the orbits are regular in long configurations when S* is small. A stochasticity condition is found, and a scaling with the S* parameter is presented. Resonant particle effects are shown to maintain the instability in the large gyroradius regime regardless of the separatrix shape.

Elena V. Belova; Ronald C. Davidson; Hantao Ji; Masaaki Yamada

2003-01-28T23:59:59.000Z

279

Compact Reversed-Field Pinch Reactors (CRFPR): preliminary engineering considerations  

SciTech Connect (OSTI)

The unique confinement physics of the Reversed-Field Pinch (RFP) projects to a compact, high-power-density fusion reactor that promises a significant reduction in the cost of electricity. The compact reactor also promises a factor-of-two reduction in the fraction of total cost devoted to the reactor plant equipment (i.e., fusion power core (FPC) plus support systems). In addition to operational and developmental benefits, these physically smaller systems can operate economically over a range of total power output. After giving an extended background and rationale for the compact fusion approaches, key FPC subsystems for the Compact RFP Reactor (CRFPR) are developed, designed, and integrated for a minimum-cost, 1000-MWe(net) system. Both the problems and promise of the compact, high-power-density fusion reactor are quantitatively evaluated on the basis of this conceptual design. The material presented in this report both forms a framework for a broader, more expanded conceptual design as well as suggests directions and emphases for related research and development.

Hagenson, R.L.; Krakowski, R.A.; Bathke, C.G.; Miller, R.L.; Embrechts, M.J.; Schnurr, N.M.; Battat, M.E.; LaBauve, R.J.; Davidson, J.W.

1984-08-01T23:59:59.000Z

280

Electrode Performance in Reversible Solid Oxide Fuel Cells  

SciTech Connect (OSTI)

The performance of several negative (fuel) and positive (air) electrode compositions for use in reversible solid oxide fuel cells (SOFC) that are capable of operating both as a fuel cell and as an electrolyzer was investigated in half-cell and full-cell tests. Negative electrode compositions studied were a nickel/zirconia cermet (Ni/YSZ) and lanthanum-substituted strontium titanate/ceria composite, whereas positive electrode compositions examined included mixed ion and electron-conducting lanthanum strontium ferrite (LSF), lanthanum strontium copper ferrite (LSCuF), lanthanum strontium cobalt ferrite (LSCoF), and lanthanum strontium manganite (LSM). While titanate/ceria and Ni/YSZ electrodes performed similarly in the fuel cell mode in half-cell tests, losses associated with electrolysis were lower for the titanate/ceria electrode. Positive electrodes all gave higher losses in the electrolysis mode when compared to the fuel cell mode. This behavior was most apparent for mixed-conducting LSF, LSCuF, and LSCoF electrodes, and discernible but smaller for LSM; observations are consistent with expected trends in the interfacial oxygen vacancy concentration under anodic and cathodic polarization. Full-cell tests conducted for cells with a thin electrolyte (7 um YSZ) similarly showed higher polarization losses in the electrolysis than fuel cell direction.

Marina, Olga A.; Pederson, Larry R.; Williams, Mark C.; Coffey, Greg W.; Meinhardt, Kerry D.; Nguyen, Carolyn D.; Thomsen, Ed C.

2007-03-22T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Reversible rigid coupling apparatus and method for borehole seismic transducers  

DOE Patents [OSTI]

An apparatus and method of high resolution reverse vertical seismic profile (VSP) measurements is shown. By encapsulating the seismic detector and heaters in a meltable substance (such as wax), the seismic detector can be removably secured in a borehole in a manner capable of measuring high resolution signals in the 100 to 1000 hertz range and higher. The meltable substance is selected to match the overall density of the detector package with the underground formation, yet still have relatively low melting point and rigid enough to transmit vibrations to accelerometers in the seismic detector. To minimize voids in the meltable substance upon solidification, the meltable substance is selected for minimum shrinkage, yet still having the other desirable characteristics. Heaters are arranged in the meltable substance in such a manner to allow the lowermost portion of the meltable substance to cool and solidify first. Solidification continues upwards from bottom-to-top until the top of the meltable substance is solidified and the seismic detector is ready for use. To remove, the heaters melt the meltable substance and the detector package is pulled from the borehole.

Owen, Thomas E. (Helotes, TX); Parra, Jorge O. (Helotes, TX)

1992-01-01T23:59:59.000Z

282

Transport and equilibrium in field-reversed mirrors  

SciTech Connect (OSTI)

Two plasma models relevant to compact torus research have been developed to study transport and equilibrium in field reversed mirrors. In the first model for small Larmor radius and large collision frequency, the plasma is described as an adiabatic hydromagnetic fluid. In the second model for large Larmor radius and small collision frequency, a kinetic theory description has been developed. Various aspects of the two models have been studied in five computer codes ADB, AV, NEO, OHK, RES. The ADB code computes two dimensional equilibrium and one dimensional transport in a flux coordinate. The AV code calculates orbit average integrals in a harmonic oscillator potential. The NEO code follows particle trajectories in a Hill's vortex magnetic field to study stochasticity, invariants of the motion, and orbit average formulas. The OHK code displays analytic psi(r), B/sub Z/(r), phi(r), E/sub r/(r) formulas developed for the kinetic theory description. The RES code calculates resonance curves to consider overlap regions relevant to stochastic orbit behavior.

Boyd, J.K.

1982-09-01T23:59:59.000Z

283

Tokamak equilibria with toroidal current reversal: properties and computational issues  

SciTech Connect (OSTI)

Several properties of axisymmetric plasma equilibria with toroidal-current reversal (TCR) are discussed using some unifying concepts from catastrophe theory. Namely, those of structural stability of functions near critical points, singularity unfolding by small perturbations, and model parameter-space division by bifurcation sets are found to be of particular usefulness. Magnetic configurations displaying, simultaneously, TCR and nested flux surfaces are thence shown to be necessarily degenerate and structurally unstable, meaning that they are easily transformed into non-nested ones by small perturbations in the model parameter set. This should lead to a new paradigm when discussing TCR equilibria, as most of present knowledge relies mainly on the properties of nested solutions, which is expected to favor the study of the broader class of non-nested configurations that recently attracted a considerable discussion in the fusion community. In addition, it is also shown how TCR imposes some constraints on plasma profiles, and how these may be dealt with computationally while keeping the ability to manipulate the shape of the inner island system.

Rodrigues, Paulo; Bizarro, Joao P. S. [Centro de Fusao Nuclear, Associacao Euratom-IST, Instituto Superior Tecnico, 1049-001 Lisbon (Portugal)

2006-11-30T23:59:59.000Z

284

Nonlinear reversible hydrodynamics of the superfluid phases of He3  

Science Journals Connector (OSTI)

The nonlinear reversible hydrodynamic equations for the superfluid phases of He3, i.e., He3-A, He3-A1, He3-B, He3-A in high magnetic fields, and He3-B in high magnetic fields, are derived. The Mermin-Ho—type relations for He3-A in high magnetic fields and He3-B in high magnetic fields are given for the first time. The influence of higher-order gradient terms in all phases is discussed, and a new class of nonlinear terms containing the various kinds of velocities is given which have not been considered so far for any of the five superfluid phases. In addition we show that the hydrodynamic equations for He3-A in high magnetic fields contain as a special case the hydrodynamics of superfluid He3-A1 and the orbit part of the hydrodynamic equations for He3 without external field. Furthermore, we point out some structural similarities in the equations for He3-A in high magnetic fields and He3-B in high magnetic fields. As an additional effect we find that the higher-order gradient terms imply a preferred direction in the hydrodynamic equations for superfluid He3-B.

H. Pleiner and H. Brand

1981-12-01T23:59:59.000Z

285

Study of fusion product effects in field-reversed mirrors  

SciTech Connect (OSTI)

The effect of fusion products (fps) on Field-Reversed Mirror (FRM) reactor concepts has been evaluated through the development of two new computer models. The first code (MCFRM) treats fps as test particles in a fixed background plasma, which is represented as a fluid. MCFRM includes a Monte Carlo treatment of Coulomb scattering and thus provides an accurate treatment of fp behavior even at lower energies where pitch-angle scattering becomes important. The second code (FRMOD) is a steady-state, globally averaged, two-fluid (ion and electron), point model of the FRM plasma that incorporates fp heating and ash buildup values which are consistent with the MCFRM calculations. These codes have been used extensively in the development of an advanced-fuel FRM reactor design (SAFFIRE). A Catalyzed-D version of the plant is also discussed along with an investigation of the steady-state energy distribution of fps in the FRM. User guides for the two computer codes are also included.

Driemeyer, D.E.

1980-01-01T23:59:59.000Z

286

An extraordinary reversal: hermeneutics and the divide between the sciences  

E-Print Network [OSTI]

of Neo- Kantian materialism. The reaction against them began when Quine attacked the "two dogmas of empiricism, " affirmed ontological relativism, and argued that theories were under-determined by evidence. Nowadays, Quine's heirs have pushed things... of Neo- Kantian materialism. The reaction against them began when Quine attacked the "two dogmas of empiricism, " affirmed ontological relativism, and argued that theories were under-determined by evidence. Nowadays, Quine's heirs have pushed things...

McDaniel, William Caleb

2012-06-07T23:59:59.000Z

287

Safety First Safety Last Safety Always Three soil types, plus rock, determine the slope or  

E-Print Network [OSTI]

Safety First Safety Last Safety Always · Three soil types, plus rock, determine the slope or safety to be at least 2 feet from the edge. Excavation Requirements Safety Tip #10 If you see a mistake and don't fix it on the reverse side of this safety tip sheet. Please refrain from reading the information verbatim

Minnesota, University of

288

The design of a controllable energy recovery device for solar powered reverse osmosis desalination with experimental validation  

E-Print Network [OSTI]

The purpose of this thesis is to design and validate a controllable energy recovery device with application to photovoltaic powered reverse osmosis (PVRO). The energy consumption of a reverse osmosis plant depends significantly ...

Reed, Elizabeth Anne, S.M. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

289

Petrogenesis of the reversely-zoned Turtle pluton, southeastern California  

SciTech Connect (OSTI)

Few plutons with a reversed geometry of a felsic rim and mafic core have been described in the geologic literature. The Turtle pluton of S.E. California is an intrusion composed of a granitic rim and granodioritic core and common microgranitoid enclaves. Field observations, mineral textures and chemistries, major and trace element geochemistry, and isotopic variability support a petrogenetic model of in situ, concomitant, magma mixing and fractional crystallization of rhyolitic magma progressively mixed with an increasing volume of andesitic magma, all without chemical contribution from entrained basaltic enclaves. Hornblende geobarometry indicates the Turtle pluton crystallized at about 3.5 kb. A crystallization sequence of biotite before hornblende (and lack of pyroxenes) suggests the initial granitic magma contained less than 4 wt% H{sub 2}O at temperatures less than 780C. U-Pb, Pb-Pb, Rb-Sr and oxygen isotope studies indicate the terrane intruded by the Turtle pluton is 1.8 Ga, that the Turtle pluton crystallized at 130 Ma, that the Target Granite and garnet aplites are about 100 Ma, and that these intrusions were derived from different sources. Models based on isotopic data suggest the rhyolitic end member magma of the Turtle pluton was derived from mafic igneous rocks, and was not derived from sampled Proterozoic country rocks. Similarity of common Sr and Pb isotopic ratios of these rocks to other Mesozoic intrusions in the Colorado River Region suggest the Turtle pluton and Target Granite have affinities like rocks to the east, including the Whipple Mountains and plutons of western Arizona. P-T-t history of the southern Turtle Mountains implies uplift well into the upper crust by Late Cretaceous time so that the heating and deformation events of the Late Cretaceous and Tertiary observed in flanking ranges did not affect the study area.

Allen, C.M.

1989-01-01T23:59:59.000Z

290

The relationships between creativity, field-dependence/independence and the rate of figure reversals  

E-Print Network [OSTI]

were done for all subjects combined as well as for males and females separately in order to evaluate the relevance of this variable. TABLE 1 TABLE OF MEANS OF VARIABLES VARIABLE MEANS STD DEV. MINIMUM MAXIMUM ACL EFT FV TREV AGE 4. 61 6. 47... Necker cube reversals FV = face-vase reversals TREV= total reversals AGE = age of subjects 12 TABLE 2 TABLE OF t TEST FOR ACL, EFT, NC& FV, EL TREY BY SEX VARIABLE SEX N MEAN STD. DEV. t df p ACL F 132 4, 49 1. 45 M 100 4. 76 1. 69 1. 297 230...

Morris, Terry Lee

2012-06-07T23:59:59.000Z

291

Evaluation of flow fields on bubble removal and system performance in an ammonium bicarbonate reverse electrodialysis stack  

E-Print Network [OSTI]

reverse electrodialysis stack Marta C. Hatzell a , Bruce E. Logan b,n a Department of Mechanical form 11 June 2013 Accepted 15 June 2013 Available online 21 June 2013 Keywords: Reverse electrodialysis solution for energy generation in reverse electrodialysis (RED) stacks. However, operating RED stacks

292

Adsorption of small organic solutes from beet distillery condensates on reverse-osmosis membranes: consequences on the process performances  

E-Print Network [OSTI]

1 Adsorption of small organic solutes from beet distillery condensates on reverse-osmosis membranes 93 50 95. Fax: +33 (0)1 69 93 50 44. E-mail: claire.fargues@agroparistech.fr Abstract Reverse osmosis of Membrane Science 446 (2013) 132-144" DOI : 10.1016/j.memsci.2013.05.051 #12;2 Keywords: reverse osmosis

Boyer, Edmond

293

Simultaneous analysis method for polar and non-polar ginsenosides in red ginseng by reversed-phase HPLC-PAD  

Science Journals Connector (OSTI)

The paper describes the development of a simultaneous determination method for polar and non-polar ginsenosides in red ginseng with a reversed-phase high-performance liquid chromatography-pulsed amperometric detection method. This method could be applied directly without any pretreatment steps and enabled the performance of highly sensitive analysis within 1 h. The detection (S/N = 3) and quantification (S/N = 10) limits for the ginsenosides ranged 0.02–0.10 ng and 0.1–0.3 ng, respectively. The linear regression coefficients ranged 0.9975–0.9998. Intra- and inter-day precisions were <9.91%. The mean recoveries ranged 98.08–103.06%. The total amount of ginsenosides in the hairy root of red ginseng was higher than that in the main root.

Sa-Im Lee; Ha-Jeong Kwon; Yong-Moon Lee; Je-Hyun Lee; Seon-Pyo Hong

2012-01-01T23:59:59.000Z

294

Electrowetting on liquid-infused film (EWOLF): Complete reversibility and controlled droplet oscillation suppression for fast optical imaging  

E-Print Network [OSTI]

Electrowetting on dielectric (EWOD) has emerged as a powerful tool to electrically manipulate tiny individual droplets in a controlled manner. Despite tremendous progress over the past two decades, current EWOD operating in ambient conditions has limited functionalities posing challenges for its applications, including electronic display, energy generation, and microfluidic systems. Here, we demonstrate a new paradigm of electrowetting on liquid-infused film (EWOLF) that allows for complete reversibility and tunable transient response simultaneously. We determine that these functionalities in EWOLF are attributed to its novel configuration, which allows for the formation of viscous liquid-liquid interfaces as well as additional wetting ridges, thereby suppressing the contact line pinning and severe droplet oscillation encountered in the conventional EWOD. Finally, by harnessing these functionalities demonstrated in EWOLF, we also explore its application as liquid lens for fast optical focusing.

Hao, Chonglei; Chen, Xuemei; He, Yuncheng; Li, Qiusheng; Li, K Y; Wang, Zuankai

2014-01-01T23:59:59.000Z

295

MODIFIED REVERSE OSMOSIS SYSTEM FOR TREATMENT OF PRODUCED WATERS  

SciTech Connect (OSTI)

This final report of ''Modified Reverse Osmosis System for Treatment of Produced Water,'' DOE project No. DE-FC26-00BC15326 describes work performed in the third year of the project. Several good results were obtained, which are documented in this report. The compacted bentonite membranes were replaced by supported bentonite membranes, which exhibited the same salt rejection capability. Unfortunately, it also inherited the clay expansion problem due to water invasion into the interlayer spaces of the compacted bentonite membranes. We noted that the supported bentonite membrane developed in the project was the first of its kind reported in the literature. An {alpha}-alumina-supported MFI-type zeolite membrane synthesized by in-situ crystallization was fabricated and tested. Unlike the bentonite clay membranes, the zeolite membranes maintained stability and high salt rejection rate even for a highly saline solution. Actual produced brines from gas and oil fields were then tested. For gas fields producing brine, the 18,300 ppm TDS (total dissolved solids) in the produced brine was reduced to 3060 ppm, an 83.3% rejection rate of 15,240 ppm salt rejection. For oilfield brine, while the TDS was reduced from 181,600 ppm to 148,900 ppm, an 18% rejection rate of 32,700 ppm reduction, the zeolite membrane was stable. Preliminary results show the dissolved organics, mainly hydrocarbons, did not affect the salt rejection. However, the rejection of organics was inconclusive at this point. Finally, the by-product of this project, the {alpha}-alumina-supported Pt-Co/Na Y catalytic zeolite membrane was developed and demonstrated for overcoming the two-step limitation of nonoxidation methane (CH{sub 4}) conversion to higher hydrocarbons (C{sub 2+}) and hydrogen (H{sub 2}). Detailed experiments to obtain quantitative results of H{sub 2} generation for various conditions are now being conducted. Technology transfer efforts included five manuscripts submitted to peer-reviewed journals and five conference presentations.

Robert L. Lee; Junghan Dong

2004-06-03T23:59:59.000Z

296

Optical efficiency of solar concentrators by a reverse optical path method  

Science Journals Connector (OSTI)

A method for the optical characterization of a solar concentrator, based on the reverse illumination by a Lambertian source and measurement of intensity of light projected on a far...

Parretta, A; Antonini, A; Milan, E; Stefancich, M; Martinelli, G; Armani, M

2008-01-01T23:59:59.000Z

297

Colorado - C.R.S. 36-1-136 - Rights of Way Granted - Reversion...  

Open Energy Info (EERE)

search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: Colorado - C.R.S. 36-1-136 - Rights of Way Granted - ReversionLegal Abstract This section...

298

Reversible stimulus-responsive polymers for the control of the surface interfacial and nanomechanical properties  

E-Print Network [OSTI]

Surfaces with reversible stimulus-responsive properties have great potential for a wide variety of applications, such as transport, separation, and detection of biomolecules, controlled adhesion, friction, and lubrication ...

Ye, Miao, Ph. D. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

299

Field-reversed configuration (FRC) as a minimum-dissipative relaxed state  

Science Journals Connector (OSTI)

The field-reversed configuration (FRC) with a completely null toroidal field and finite plasma beta is shown to result from a relaxation mechanism based on the principle of minimum dissipation of energy.

R Bhattacharyya; M.S Janaki; B Dasgupta

2001-01-01T23:59:59.000Z

300

Ultrafast laser inscription of bistable and reversible waveguides in strontium barium niobate crystals  

E-Print Network [OSTI]

Ultrafast laser inscription of bistable and reversible waveguides in strontium barium niobate optical channel waveguides in strontium barium niobate nonlinear ferroelectric crystals by direct for the fabrication of optical buried waveguides. This would be especially relevant in the ferroelectric strontium

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

The optimal reverse logistics network for consumer batteries in North America  

E-Print Network [OSTI]

The recycling of household consumer batteries is gaining legislative support throughout North America. The intent of this thesis document is to provide a broad overview of the current North American reverse logistics network ...

Rahman, Asgar

2013-01-01T23:59:59.000Z

302

Theoretical basis for the scleral expansion band procedure for surgical reversal of presbyopia (SRP)  

Science Journals Connector (OSTI)

A new technique, the scleral expansion band procedure, has been developed for the surgical reversal of presbyopia. The effects of scleral expansion band are based on a recently developed theory by Schachar, wh...

Ronald A. Schachar MD; PhD

2000-12-01T23:59:59.000Z

303

Theoretical basis for the scleral expansion band procedure for surgical reversal of presbyopia [SRP  

Science Journals Connector (OSTI)

A new technique, the scleral expansion band procedure, has been developed for the surgical reversal of presbyopia. An understanding of demonstrable clinical effects of the scleral expansion band procedure, bas...

Ronald A. Schachar MD; PhD

2001-03-01T23:59:59.000Z

304

Dynamic response of Earth's magnetosphere to By reversals K. Kabin, R. Rankin, and R. Marchand  

E-Print Network [OSTI]

Dynamic response of Earth's magnetosphere to By reversals K. Kabin, R. Rankin, and R. Marchand Citation: Kabin, K., R. Rankin, R. Marchand, T. I. Gombosi, C. R. Clauer, A. J. Ridley, V. O. Papitashvili

Michigan, University of

305

Hydrogen Storage Materials and their Maximum Ability on Reversible Hydrogen Sorption  

Science Journals Connector (OSTI)

Interaction of some intermetallic compounds with hydrogen is analyzed in the paper. The most ... in the practice compounds capable reversibly to absorb hydrogen at low temperature and pressure are recommended. Ma...

N. M. Vlasov; A. I. Solovey; I. I. Fedik…

2005-01-01T23:59:59.000Z

306

Water purification of nitrates by low-pressure reverse osmosis method  

Science Journals Connector (OSTI)

The paper has investigated possibilities and basic regularities of water purification of nitrates by low pressure reverse osmosis. The negative influence of chlorides and sulfates ... made on expediency of using ...

V. V. Goncharuk; V. O. Osipenko…

2013-03-01T23:59:59.000Z

307

A Case Study of Reverse Osmosis Applied to the Concentration of Yeast Effluent  

Science Journals Connector (OSTI)

In 1986 PCI Membrane Systems installed a reverse osmosis plant to concentrate an effluent arising from...2 of membrane area. The membrane was a thin film composite membrane designated AFC99.

Alan Merry

1991-01-01T23:59:59.000Z

308

A reverse osmosis laboratory plant for experimenting with fault-tolerant control  

Science Journals Connector (OSTI)

A test bed for research and teaching in fault-tolerant control (FTC) systems is presented. The laboratory plant is based on an industrial reverse osmosis desalination plant equipped with standardized components, which introduces more realism and robustness ...

A. Gambier; T. Miksch; E. Badreddin

2009-06-01T23:59:59.000Z

309

Removal of organic and inorganic compounds from landfill leachate using reverse osmosis  

Science Journals Connector (OSTI)

The main objective of this work was to evaluate an effectiveness of removing organic and inorganic pollutants from landfill leachate in a long-term reverse osmosis (RO) study. Investigations were carried out...4 ...

I. A. Talalaj

2014-08-01T23:59:59.000Z

310

The heat resistance of bacterial spores due to their partial dehydration by reverse osmosis  

Science Journals Connector (OSTI)

The ability of bacterial spores to withstand heat is known to be associated with a lowering of their water content. This partial dehydration is considered to be produced by reverse osmosis, with the pressure bein...

John E. Algie

1980-01-01T23:59:59.000Z

311

Reverse-Osmosis Filtration Based Water Treatment and Special Water Purification for Nuclear Power Systems  

Science Journals Connector (OSTI)

This paper is devoted to the development and operation of specialized water treatment and water purification systems, based on the principle of reverse-osmosis filtration of water, for the operation of ... P. Ale...

V. N. Epimakhov; M. S. Oleinik; L. N. Moskvin

2004-04-01T23:59:59.000Z

312

3D Weak-Dispersion Reverse-Time Migration with a StereoModeling Method  

E-Print Network [OSTI]

The finite difference method has been widely used in seismic modeling and reverse time migration. However, it generally has two issues: large computational cost and numerical dispersion. Recently, a nearly-analytic discrete ...

Li, Jingshuang

2013-01-01T23:59:59.000Z

313

Methane-to-hydrogen conversion in a reversible flow filtration combustion reactor at a high pressure  

Science Journals Connector (OSTI)

The noncatalytic process of partial oxidation of methane to syngas in a reversible flow filtration combustion reactor at high pressures has been considered. ... conversion process — the maximum temperature in the...

Yu. M. Dmitrenko; P. A. Klyovan

2013-09-01T23:59:59.000Z

314

Mass transport corrected Tafel analysis for electrochemically reversible systems of complex stoichiometry  

Science Journals Connector (OSTI)

A general expression which allows Tafel analysis of electrochemically reversible systems of the form mA±e??nB at hydrodynamic electrodes such as the rotating disk or wall-tube is presented.

Oleksiy V. Klymenko; Richard G. Compton

2004-01-01T23:59:59.000Z

315

Reversible Transition of Graphene from Hydrophobic to Hydrophilic in the Presence of an Electric Field  

Science Journals Connector (OSTI)

Reversible Transition of Graphene from Hydrophobic to Hydrophilic in the Presence of an Electric Field ... † Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Materials Science and Engineering, Jilin University, Changchun 130022, China ...

Q. G. Jiang; Z. M. Ao; D. W. Chu; Q. Jiang

2012-08-22T23:59:59.000Z

316

Magnetization reversal in CoPt(111) hard/soft bilayers  

SciTech Connect (OSTI)

The magnetization reversal in magnetron sputtered CoPt(111) hard/soft bilayers has been studied by polarized neutron reflectometry and magnetization measurements. The stability of the hard layer is tuned by the heat-treatment conditions which are used to crystallize the chemically ordered, high anisotropy, L{sub 1}0 phase. All the samples show the same features in their first order reversal curves but the lateral domain size during the magnetization reversal of the soft layer differs. In samples with strong intergrain coupling it exceeds the coherence length of the neutron beam, resulting in spin-flip scattering. In contrast, the hard layer reversal occurs through the reorientation in small domains.

Alexandrakis, V.; Niarchos, D. [IMS, NCSR 'Demokritos', Ag. Paraskevi Attiki, Attiki 153 10 (Greece); Wolff, M. [Institute for Solid State Physics/EP IV, Ruhr-University Bochum, 44780 Bochum (Germany); Panagiotopoulos, I. [Department of Materials Science and Engineering, University of Ioannina, Ioannina 45110 (Greece)

2009-03-15T23:59:59.000Z

317

Reverse phase high performance liquid chromatograph for analysis of casein phosphopeptides  

E-Print Network [OSTI]

phosphopeptides. Initially, sodium casemate was enzymatically digested with trypsin at pH 8.0 for 24 hours. Following a calcium precipitation, preliminary purification was achieved using a reverse phase C-3 (containing propyl hydrocarbons attached to the silica...

McKee, Shelly R.

1994-01-01T23:59:59.000Z

318

A 12-barrel deuterium pellet injector for the C-2 field-reversed configuration device  

Science Journals Connector (OSTI)

A compact 12-barrel deuterium pellet injector for plasma studies in the C-2 field-reversed configuration device (USA) is described. As in other multibarrel injectors, pellets are simultaneously formed inside s...

I. V. Vinyar; A. Ya. Lukin; S. V. Skoblikov…

2014-07-01T23:59:59.000Z

319

Reversed spin polarization at the Co(001)-HfO2(001) interface  

Science Journals Connector (OSTI)

Ab initio electronic-structure calculations on the Co(001)-HfO2(001) interface are reported. The spin polarization of conduction electrons is positive at the interface, i.e., it is reversed with respect to the spin polarization in bulk Co. The electronic structure is very sensitive to the interface structure; without atomic relaxations the reversed spin polarization is not found. The possible relation with spin-polarized tunneling and magnetoresistance is discussed.

P. K. de Boer; G. A. de Wijs; R. A. de Groot

1998-12-15T23:59:59.000Z

320

Molecular Studies in Horses with SRY-Positive XY Sex Reversal  

E-Print Network [OSTI]

MOLECULAR STUDIES IN HORSES WITH SRY-POSITIVE XY SEX REVERSAL SYNDROME A Thesis by ERICA FANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... WITH SRY-POSITIVE XY SEX REVERSAL SYNDROME A Thesis by ERICA FANG Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Co...

Fang, Erica

2012-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Direct Hydrogenation Magnesium Boride to Magnesium Borohydride: Demonstration of >11 Weight Percent Reversible Hydrogen Storage  

SciTech Connect (OSTI)

We here for the first time demonstrate direct hydrogenation of magnesium boride, MgB2, to magnesium borohydride, Mg(BH4)2 at 900 bar H2-pressures and 400°C. Upon 14.8wt% hydrogen release, the end-decomposition product of Mg(BH4)2 is MgB2, thus, this is a unique reversible path here obtaining >11wt% H2 which implies promise for a fully reversible hydrogen storage material.

Severa, Godwin; Ronnebro, Ewa; Jensen, Craig M.

2010-11-16T23:59:59.000Z

322

Reversible Ionic Liquids as Double-action Solvents for Efficient CO2 Capture  

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

Reversible Ionic Liquids as Double-action Reversible Ionic Liquids as Double-action Solvents for Efficient CO 2 Capture Background Post-combustion carbon dioxide (CO 2 ) capture presents technical challenges because the flue gas is at atmospheric pressure and the CO 2 concentration is 10 to 15 volume percent, resulting in a low CO 2 partial pressure and a large volume of gas that needs to be treated. In spite of this difficulty, post-combustion CO 2 capture offers the

323

Draft General Conformity Determination  

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

I I Draft General Conformity Determination U.S. Department of the Interior Minerals Management Service MMS Cape Wind Energy Project January 2009 Final EIS Appendix I Draft General Conformity Determination Draft General Conformity Determination Cape Wind Energy Project Prepared by Minerals Management Service Herndon, VA November 2008 i TABLE OF CONTENTS 1.0 INTRODUCTION TO THE PROPOSED ACTION............................................................... 1 2.0 GENERAL CONFORMITY REGULATORY BACKGROUND .......................................... 2 2.1 GENERAL CONFORMITY REQUIREMENTS.................................................................... 2 2.2 GENERAL CONFORMITY APPLICABILITY.....................................................................

324

Reverse Computation for Rollback-based Fault Tolerance in Large Parallel Systems  

SciTech Connect (OSTI)

Reverse computation is presented here as an important future direction in addressing the challenge of fault tolerant execution on very large cluster platforms for parallel computing. As the scale of parallel jobs increases, traditional checkpointing approaches suffer scalability problems ranging from computational slowdowns to high congestion at the persistent stores for checkpoints. Reverse computation can overcome such problems and is also better suited for parallel computing on newer architectures with smaller, cheaper or energy-efficient memories and file systems. Initial evidence for the feasibility of reverse computation in large systems is presented with detailed performance data from a particle simulation scaling to 65,536 processor cores and 950 accelerators (GPUs). Reverse computation is observed to deliver very large gains relative to checkpointing schemes when nodes rely on their host processors/memory to tolerate faults at their accelerators. A comparison between reverse computation and checkpointing with measurements such as cache miss ratios, TLB misses and memory usage indicates that reverse computation is hard to ignore as a future alternative to be pursued in emerging architectures.

Perumalla, Kalyan S [ORNL; Park, Alfred J [ORNL

2013-01-01T23:59:59.000Z

325

Imperfect price-reversibility of US gasoline demand: Asymmetric responses to price increases and declines  

SciTech Connect (OSTI)

This paper describes a framework for analyzing the imperfect price-reversibility (hysteresis) of oil demand. The oil demand reductions following the oil price increases of the 1970s will not be completely reversed by the price cuts of the 1980s, nor is it necessarily true that these partial demand reversals themselves will be reversed exactly by future price increases. The author decomposes price into three monotonic series: price increases to maximum historic levels, price cuts, and price recoveries (increases below historic highs). He would expect that the response to price cuts would be no greater than to price recoveries, which in turn would be no greater than for increases in maximum historic price. For evidence of imperfect price-reversibility, he tests econometrically the following US data: vehicle miles per driver, the fuel efficiency of the automobile fleet, and gasoline demand per driver. In each case, the econometric results allow him to reject the hypothesis of perfect price-reversibility. The data show smaller response to price cuts than to price increases. This has dramatic implications for projections of gasoline and oil demand, especially under low-price assumptions. 26 refs., 13 figs., 3 tabs.

Gately, D. (New York Univ., NY (United States))

1992-01-01T23:59:59.000Z

326

Seawater feed reverse osmosis preheating appraisal, Part I: leading element performance  

Science Journals Connector (OSTI)

This paper is concerned with the seawater reverse osmosis preheating process, and presents a parametric study of the process. The basic transport equations describing the leading element are exhibited and appraised. The leading element, which governs the whole system performance, is studied and analysed. The incorporated and investigated operating parameters are the feed pressure and the temperature for different feed salt concentrations. In addition, different feed flow rates, effects on permeate flux and permeator salt rejection, together with the permeator recovery, are studied. A seawater membrane of a well-known data, for instance FT30SW380HR, is used to perform the study. The membrane water permeability coefficient Kw is determined and correlated. Furthermore, the membrane salt permeability coefficient Ks from the manufacturer system analysis program (ROSA) is given and discussed. The transport governing equations are programmed in a way that facilitates the achievement of a realistic parametric study. The results showed that the permeate flux increases significantly as the feed pressure increases. Also, it increases significantly as the feed salt concentration decreases, and also as the feed temperature and pressure increase. Meanwhile, the permeator salt rejection increases significantly as the feed pressure increases, and decreases significantly as the feed temperature increases. The study of the leading element of the array showed that there are constraints that must be considered, such as maximum membrane flux, maximum applied feed pressure, maximum feed flow rate and maximum feed temperature. Therefore, to attain the maximum membrane flux, the applied feed pressure must be lowered when the feed temperature is increased. In the case where the feed temperature is increased from 18°C to 45°C, a pressure saving of between 7% and 26% is achieved, according to the feed salt concentration and feed flow rate.

Aly Karameldin; Mahmoud S. Saadawy

2006-01-01T23:59:59.000Z

327

Reversible Three-Electron Redox Behaviors of FeF3 Nanocrystals as High-Capacity Cathode-Active Materials for Li-Ion Batteries  

Science Journals Connector (OSTI)

Reversible Three-Electron Redox Behaviors of FeF3 Nanocrystals as High-Capacity Cathode-Active Materials for Li-Ion Batteries ... Three types of FeF3 nanocrystals were synthesized by different chemical routes and investigated as a cathode-active material for rechargeable lithium batteries. ... (1-3) Though many types of metal oxides and phosphates have been tested as alternative cathode materials,(4, 5) no real breakthrough has been achieved in capacity, especially for intercalation cathodes, the capacity-determining electrode in the present LIBs systems. ...

Ting Li; Lei Li; Yu L. Cao; Xin P. Ai; Han X. Yang

2010-01-28T23:59:59.000Z

328

Categorical Exclusion Determinations: New York | Department of Energy  

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

September 7, 2011 September 7, 2011 CX-006803: Categorical Exclusion Determination Long Island 50 Megawatt Solar Initiative CX(s) Applied: B5.1 Date: 09/07/2011 Location(s): New York Office(s): Energy Efficiency and Renewable Energy, Golden Field Office September 1, 2011 CX-006504: Categorical Exclusion Determination United States Photovoltaic Manufacturing Consortium (PVMC) - Enabling America's Solar Revolution CX(s) Applied: A9, B3.6, B5.1 Date: 09/01/2011 Location(s): Clifton Park, New York Office(s): Energy Efficiency and Renewable Energy, Golden Field Office September 1, 2011 CX-008673: Categorical Exclusion Determination Columbia - Biofuels from Carbon Dioxide using Ammonia-Oxidizing Bacteria in a Reverse Microbial Fuel Cell CX(s) Applied: B3.6 Date: 09/01/2011 Location(s): New York

329

Categorical Exclusion Determinations: B3.6 | Department of Energy  

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

2, 2010 2, 2010 CX-003115: Categorical Exclusion Determination Regents of the University of California - Electro-Autotrophic Synthesis of Higher Alcohols CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): California Office(s): Advanced Research Projects Agency - Energy June 2, 2010 CX-003107: Categorical Exclusion Determination Harvard Medical School, Wyss Institute - Engineering a Bacterial Reverse Fuel Cell CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Massachusetts Office(s): Advanced Research Projects Agency - Energy June 2, 2010 CX-003103: Categorical Exclusion Determination The Ohio State University - Bioconversion of Carbon Dioxide to Biofuels CX(s) Applied: B3.6 Date: 06/02/2010 Location(s): Ohio Office(s): Advanced Research Projects Agency - Energy June 1, 2010

330

CX-000790: Categorical Exclusion Determination | Department of Energy  

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

0: Categorical Exclusion Determination 0: Categorical Exclusion Determination CX-000790: Categorical Exclusion Determination Infrastructure Improvements for Innovative Confinement Concept (ICC) Experiments with American Recovery and Reinvestment Act Funding CX(s) Applied: B3.13 Date: 01/13/2010 Location(s): New Jersey Office(s): Princeton Site Office, Science The proposed action would consist of the following Innovative Confinement Concept infrastructure improvement projects: (1) Completion of the Lithium Tokamak Experiment to adequately investigate the consequences of low recycling boundaries on magnetically confined plasmas; (2) Fabrication of an x-ray crystal spectrometer for the Large Helical Device Stellarator in Toki/Japan for Doppler measurements of the ion temperature profiles; and (3) Upgrade of the Princeton Field Reversed Configurataion experimental

331

CX-005800: Categorical Exclusion Determination | Department of Energy  

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

00: Categorical Exclusion Determination 00: Categorical Exclusion Determination CX-005800: Categorical Exclusion Determination Detoxification of Uranium in Soils and Groundwater Using Recycled Concrete CX(s) Applied: B3.6 Date: 04/05/2011 Location(s): Aiken, South Carolina Office(s): Environmental Management, Savannah River Operations Office Uranium (U) is the most frequently occurring radionuclide contaminant in soil and groundwater of the Department of Energy (DOE) complex, but current treatment options are either reversible or apply to only a limited set of conditions. This laboratory directed research and development effort seeks to demonstrate that U(VI) can be immobilized by inducing precipitation of U(VI) silicates by addition of powdered recycled concrete. Uranium silicates are stable over a wide range of pH and at the oxidizing

332

CX-000595: Categorical Exclusion Determination | Department of Energy  

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

95: Categorical Exclusion Determination 95: Categorical Exclusion Determination CX-000595: Categorical Exclusion Determination 25A4592 - Electric Field Swing Adsorption for Carbon Capture Applications CX(s) Applied: B3.6 Date: 12/15/2009 Location(s): Pennsylvania Office(s): Advanced Research Projects Agency - Energy Project proposes a novel technology, electric field swing adsorption (EFSA), for the reversible adsorption/desorption of gases using electrically conducting high-surface area solid sorbents. The technique uses applied electric potentials (up to 1 kilovolt) to control the surface interaction between gas molecules and an electrically conducting sorbent material, such as nanoporous carbon. This project's target application for this technology is carbon dioxide capture from point sources such as

333

CX-003705: Categorical Exclusion Determination | Department of Energy  

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

5: Categorical Exclusion Determination 5: Categorical Exclusion Determination CX-003705: Categorical Exclusion Determination Florida Hydrogen Initiative - University of South Florida (Design and Development of an Advanced Hydrogen Storage System using Novel Materials) CX(s) Applied: A9, B3.6 Date: 09/15/2010 Location(s): Tampa, Florida Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Under the 2004 Congressionally Directed Project (CDP), the University of Central Florida (UCF - formerly Florida Hydrogen Initiative) was awarded funding that would then be used to fund various research projects chosen by the university. The scope of the CDP has been expanded to include five new sub-award projects. This project would design and develop conducting polymeric nano-materials with reversible hydrogen storage characteristics

334

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

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

21, 2011 21, 2011 CX-007704: Categorical Exclusion Determination Pacific Northwest National Laboratory - Reversible Metal Hydride Thermal Storage for High Temeprative Power Generation Systems CX(s) Applied: B3.6 Date: 11/21/2011 Location(s): Utah, Washington Offices(s): Advanced Research Projects Agency-Energy November 21, 2011 CX-007697: Categorical Exclusion Determination Autogrid, Inc. - Highly Dispatchable and Distributed Demand Response for the Integration of Distributed Generation CX(s) Applied: A9, B1.7 Date: 11/21/2011 Location(s): New York, California Offices(s): Advanced Research Projects Agency-Energy November 18, 2011 CX-007689: Categorical Exclusion Determination Georgia Tech Research Corporation- Prosumer-Based Distributed Autonomous Cyber-Physical Architecture for Ultra-Reliable Green Electricity

335

CX-007763: Categorical Exclusion Determination | Department of Energy  

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

3: Categorical Exclusion Determination 3: Categorical Exclusion Determination CX-007763: Categorical Exclusion Determination Nuclear Energy University Programs Infrastructure Program: Minor Reactor Upgrades - University if Wisconsin CX(s) Applied: B2.2 Date: 11/28/2011 Location(s): Wisconsin Offices(s): Nuclear Energy, Idaho Operations Office This project by the University of Wisconsin will: 1) Upgrade the reactor pool water system with a reverse osmosis system and a capacitance continuous level measurement probe with an associated digital meter display, 2) Upgrade the reactor instrumentation and control systems with a multi-turn rotary absolute encoder along with associated digital readout devise and connecting hardware and a digital recorder, 3) Upgrade the area radiation monitoring system and upgrade the swipe counter with an automatic

336

CX-001560: Categorical Exclusion Determination | Department of Energy  

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

0: Categorical Exclusion Determination 0: Categorical Exclusion Determination CX-001560: Categorical Exclusion Determination Hydroelectric turbine at Water Treatment Plant American Recovery and Reinvestment Act Energy Efficiency and Conservation Block Grant Strategy Only CX(s) Applied: B5.1 Date: 03/31/2010 Location(s): Greensboro, North Carolina Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Energy Efficiency and Conservation Block Grant funding. The Department of Energy funding will be used to install a reverse pump type hydroelectric turbine at the Mitchell Water Treatment Plant. A feasibility study has already been completed for the installation of this equipment. The turbine will generate electricity from the excess head that is currently burned at the plant with one butterfly control valve on each of the incoming raw

337

Dynamic characterization of nanofiltration and reverse osmosis membranes  

SciTech Connect (OSTI)

An original method has been proposed to determine the dynamic permeability of membranes. Experiments were run under different operating conditions (various transmembrane pressures, membranes, concentrations, and solutes), and the experimental data were processed using this dynamic permeability model. The results show that permeability defined in this manner reflects the differences in the membrane behavior from pure water to a solution or from one solution to another. With dynamic permeability data, membrane condition can also be evaluated after use without the need to run experiments with pure water.

Lebrun, R.E.; Xu, Y. [Univ. du Quebec, Trois-Rivieres, Quebec (Canada). Dept. du Genie Chimique

1999-06-01T23:59:59.000Z

338

Determination of agrochemical combinations in spiked soil samples  

Science Journals Connector (OSTI)

Quantitative determination of combinations of the agrochemicals: atrazine, propham, chlorpropham, diflubenzuron, ?-cypermethrin and tetramethrin from spiked soil is reported. Method involves ultrasonic extraction of agrochemicals with acctone, separation of samples by means of reverse-phase thin-layer chromatography and quantification by slit-scanning densitometry. Computer-assisted optimisation was used to select the optimum mobilc phase composition. Apparent recoveries of agrochemicals from spiked soil were: 90.3±8.5 for chlorpropham, 79.3±10.3 for propham, 102±2.4 for atrazine, 100.6±5.4 for ?-cypermethrin, 103.0±4.1 for telramethrin and 98.3±4.9 for diflubenzuron.

Sandra Babic; Marija Kastelan-Macan; Mira Petrovic

1998-01-01T23:59:59.000Z

339

Interim Action Determination  

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

Interim Action Determination Interim Action Determination Processing of Plutonium Materials from the DOE Standard 3013 Surveillance Program in H-Canyon at the Savannah River Site The Department of Energy (DOE) is preparing the Surplus Plutonium Disposition Supplemental Environmental Impact Statement (SPD SEIS, DOE/EIS-0283-S2). DOE is evaluating alternatives for disposition of non-pit plutonium that is surplus to the national

340

Reversal of Catabolism by Beta-Blockade after Severe Burns  

Science Journals Connector (OSTI)

...-isotope methods and serial body-composition scanning to determine that beta-blockade with propranolol diminishes wasting of skeletal-muscle protein after severe burns. Thirteen severely burned children were given propranolol for up to four weeks and had a decrease in resting energy expenditure, without... Patients with severe burns have catecholamine-mediated hypermetabolism, including pronounced muscle-protein catabolism, that adversely affects recovery. In a prospective, randomized study, 13 children with severe burns were given oral propranolol for up to four weeks in an attempt to interrupt this process, and 12 served as controls. Beta-blockade decreased resting energy expenditure and increased net muscle-protein balance by 82 percent, as compared with a 27 percent decrease in net muscle-protein balance in the control group.

Herndon D.N.Hart D.W.Wolf S.E.Chinkes D.L.Wolfe R.R.

2001-10-25T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Treatment of low-level radioactive waste liquid by reverse osmosis  

SciTech Connect (OSTI)

The processing of low-level radioactive waste (LLRW) liquids that result from operation of nuclear power plants with reverse osmosis systems is not common practice. A demonstration facility is operating at Chalk River Laboratories (of Atomic Energy of Canada Limited), processing much of the LLRW liquids generated at the site from a multitude of radioactive facilities, ranging from isotope production through decontamination operations and including chemical laboratory drains. The reverse osmosis system comprises two treatment steps--spiral wound reverse osmosis followed by tubular reverse osmosis--to achieve an average volume reduction factor of 30:1 and a removal efficiency in excess of 99% for most radioactive and chemical species. The separation allows the clean effluent to be discharged without further treatment. The concentrated waste stream of 3 wt% total solids is further processed to generate a solid product. The typical lifetimes of the membranes have been nearly 4000 hours, and replacement was required based on increased pressure drops and irreversible loss of permeate flux. Four years of operating experience with the reverse osmosis system, to demonstrate its practicality and to observe and record its efficiency, maintenance requirements and effectiveness, have proven it to be viable for volume reduction and concentration of LLRW liquids generated from nuclear-power-plant operations.

Buckley, L.P.; Sen Gupta, S.K.; Slade, J.A. [Atomic Energy of Canada Limited, Chalk River, Ontario (Canada). Chalk River Labs.

1995-12-31T23:59:59.000Z

342

Fouling effects of tri-n-butylphosphate on reverse osmosis performance and techniques for performance recovery  

SciTech Connect (OSTI)

The F/H Effluent Treatment Facility (F/H ETF) must be on-line by November 1988 to treat the low level activity wastes presently being discharged to the F- and H- areas' seepage basins. The three main processes of the F/H ETF are filtration, reverse osmosis, and ion exchange. Any dissolved organics present in the F/H ETF's feed have the potential to affect operation of the reverse osmosis system. Earlier studies with F/H ETF feed simulant and 70 volume percent kerosene and 30 volume percent tri-n-butylphosphate (TBP) additions showed that the kerosene/TBP mixture results in partial fouling of reverse osmosis membranes. A more detailed analysis of the seepage basin feed has shown that TBP is the major dissolved organic compound. Since it is dissolved (soluble to about 400 ppM at 25{degree}C), TBP will be present in the reverse osmosis feed unless removed by a means other than filtration. Thus the fouling effect of TBP (without kerosene) on reverse osmosis performance was investigated. 4 refs., 8 figs., 2 tabs.

Poy, F.L.

1987-07-28T23:59:59.000Z

343

Evaluation of military field-water quality: Volume 7, Performance evaluation of the 600-gph reverse osmosis water purification unit (ROWPU): Reverse osmosis (RO) components  

SciTech Connect (OSTI)

The primary purpose of this work is to ascertain whether the performance of the current 600-gph reverse osmosis water-purification unit (ROWPU) is adequate to meet the water-quality standards recommended in Volume 4 of this study. A secondary objective is to review the design of the treatment units used in the ROWPU, as well as the prescribed mode of operation, and to make constructive recommendations. Reverse osmosis (hyperfiltration) is a complicated water-treatment process that is not described easily with a few process parameters. Furthermore, published literature on the type of membrane currently used in the ROWPU was scarce. Therefore, we required a mathematical model that could be used to extrapolate existing information to different operating conditions. It was successful for seawater and single-salt solutions, but it proved to be unsuccessful for just any mix of salts that might be encountered in nature. 99 refs., 69 figs., 60 tabs.

Marinas, B.J.; Ungun, Z.; Selleck, R.E.

1986-02-01T23:59:59.000Z

344

High resolution reverse VSP and interwell seismic experiments at the Buckhorn test site in Illinois  

SciTech Connect (OSTI)

Reverse Vertical Seismic Profiling VSP and interwell seismic experiments were conducted at the Western Kentucky Petroleum Buckhorn test site near Quincy, Illinois. The RVSP data were acquired using a 3-component pneumatic probe and the interwell seismic data were acquired using a 24-element hydrophone array. The experiments were conducted to analyze high resolution seismic waveforms and to perform travel time velocity inversion for mapping the Silurian Kankakee formation which is the more prolific oil producer in the Mt. Sterling area. Reverse VSP and interwell seismic measurements together with log data have yielded information on the anisotropic characteristic of the shale formation and in the compressional wave velocity distribution of the limestone formation. These results inferred that reverse VSP (using several 3-component detectors in shallow boreholes) and interwell seismic measurements integrated with log data and seismic modeling can delineate the hydrocarbon reservoir and geological structures at the Buckhorn test site.

Parra, J.O.; Bangs, J.H.

1992-07-01T23:59:59.000Z

345

High resolution reverse VSP and interwell seismic experiments at the Buckhorn test site in Illinois  

SciTech Connect (OSTI)

Reverse Vertical Seismic Profiling VSP and interwell seismic experiments were conducted at the Western Kentucky Petroleum Buckhorn test site near Quincy, Illinois. The RVSP data were acquired using a 3-component pneumatic probe and the interwell seismic data were acquired using a 24-element hydrophone array. The experiments were conducted to analyze high resolution seismic waveforms and to perform travel time velocity inversion for mapping the Silurian Kankakee formation which is the more prolific oil producer in the Mt. Sterling area. Reverse VSP and interwell seismic measurements together with log data have yielded information on the anisotropic characteristic of the shale formation and in the compressional wave velocity distribution of the limestone formation. These results inferred that reverse VSP (using several 3-component detectors in shallow boreholes) and interwell seismic measurements integrated with log data and seismic modeling can delineate the hydrocarbon reservoir and geological structures at the Buckhorn test site.

Parra, J.O.; Bangs, J.H.

1992-01-01T23:59:59.000Z

346

REVERSE RADIATIVE SHOCK LASER EXPERIMENTS RELEVANT TO ACCRETING STREAM-DISK IMPACT IN INTERACTING BINARIES  

SciTech Connect (OSTI)

We present the first results from high-energy-density laboratory astrophysics experiments that explore the hydrodynamic and radiative properties of a reverse shock relevant to a cataclysmic variable system. A reverse shock is a shock wave that develops when a freely flowing, supersonic plasma is impeded. In our experiments, performed on the Omega Laser Facility, a laser pulse is used to accelerate plasma ejecta into a vacuum. This flow is directed into an Al plate in front of which a shock forms in the rebounding plasma. The plasma flow is moving fast enough that it is shocked to high enough temperatures that radiative cooling affects the shock structure. These are the first experiments to produce a radiative reverse shock wave.

Krauland, C. M.; Drake, R. P.; Kuranz, C. C.; Huntington, C. M.; Kaczala, D. N.; Klein, S.; Sweeney, R.; Young, R. P.; Keiter, P. A. [Department of Atmospheric, Oceanic, and Space Sciences, University of Michigan, Ann Arbor, MI 48109 (United States); Loupias, B.; Falize, E.; Villette, B. [CEA-DAM-DIF, F-91297 Arpajon (France); Plewa, T., E-mail: krauland@umich.edu, E-mail: rpdrake@umich.edu [Department of Scientific Computing, Florida State University, Tallahassee, FL 32306 (United States)

2013-01-01T23:59:59.000Z

347

Compact-Toroid Fusion Reactor (CTOR) based on the Field-Reversed Theta Pinch  

SciTech Connect (OSTI)

Scoping studies of a translating Compact Torus Reactor (CTOR) have been made on the basis of a dynamic plasma model and an overall systems approach. This CTOR embodiment uses a Field-Reversed Theta Pinch as a plasma source. The field-reversed plasmoid would be formed and compressionally heated to ignition prior to injection into and translation through a linear burn chamber, thereby removing the high-technology plamoid source from the hostile reactor environment. Stabilization of the field-reversed plasmoid would be provided by a passive conducting shell located outside the high-temperature blanket but within the low-field superconducting magnets and associated radition shielding. On the basis of this batch-burn but thermally steady-state approach, a reactor concept emerges with a length below approx. 40 m that generates 300 to 400 MWe of net electrical power with a recirculating power fraction less than 0.15.

Hagenson, R.L.; Krakowski, R.A.

1981-01-01T23:59:59.000Z

348

Assessment of an ultrafiltration pre-treatment system for a seawater reverse osmosis plant  

Science Journals Connector (OSTI)

The seawater reverse osmosis system requires extensive pre-treatment in order to ensure reliable performance. The conventional pre-treatment system involves dosing of chemicals, which requires frequent monitoring of raw water quality, and also involves adjusting the dosage. Besides being cumbersome, there is a lot of time lag involved in carrying out these measures. This calls for pre-treatment systems based on physicochemical mechanisms. During the last few years, Ultrafiltration (UF) has emerged as a leading unit operation in order to render raw seawater compatible with reverse osmosis operations. In this context, the Desalination Division of BARC has already installed an operational UF pre-treatment system. In this paper, we examine the role of UF in the overall operations of the seawater reverse osmosis system.

S.A. Tiwari; D. Goswami; S. Prabhakar; P.K. Tewari

2006-01-01T23:59:59.000Z

349

Determining age of whales  

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

Determining age of whales Determining age of whales Name: Bruce W Walkey Age: N/A Location: N/A Country: N/A Date: N/A Question: While browsing through the Internet, I came upon a question by two fifth grade students. Their question got me thinking and now I pose it to you. How can you determine the age of whales? Since they are mammals, can the methods that are used on humans be used on whales? What are some tests that can be done on bones or tissues to determine age? Looking forward to your reply. Replies: Although it is difficult to determine the age of whales (unless they are born in captivity and we know their birth date), several methods have been commonly used: 1) (if female) the examination of the ovaries 2) Examination of the ridges on baleen, which are not uniform in size and analogous to tree rings. The problem with this is that baleen wears away over time. 3) Studying layers of ossification in an ear bone is probably the most accurate method of aging, since internal bones don't wear away. The biggest problem with aging methods is that they usually require that you are dissecting the animal, and often, we would like a method of aging for live active animals. The best we can do here is to compare the size and markings of whales of known age to those found in the wild. Great question!

350

Reversible Hydrogen Storage Materials – Structure, Chemistry, and Electronic Structure  

SciTech Connect (OSTI)

To understand the processes involved in the uptake and release of hydrogen from candidate light-weight metal hydride storage systems, a combination of materials characterization techniques and first principle calculation methods have been employed. In addition to conventional microstructural characterization in the transmission electron microscope, which provides projected information about the through thickness microstructure, electron tomography methods were employed to determine the three-dimensional spatial distribution of catalyst species for select systems both before and after dehydrogenation. Catalyst species identification as well as compositional analysis of the storage material before and after hydrogen charging and discharging was performed using a combination of energy dispersive spectroscopy, EDS, and electron energy loss spectroscopy, EELS. The characterization effort was coupled with first-principles, electronic-structure and thermodynamic techniques to predict and assess meta-stable and stable phases, reaction pathways, and thermodynamic and kinetic barriers. Systems studied included:NaAlH4, CaH2/CaB6 and Ca(BH4)2, MgH2/MgB2, Ni-Catalyzed Magnesium Hydride, TiH2-Catalyzed Magnesium Hydride, LiBH4, Aluminum-based systems and Aluminum

Robertson, Ian M. [University of Wisconsin-Madison; Johnson, Duane D. [Ames Lab., Iowa

2014-06-21T23:59:59.000Z

351

Propagation direction reversal of ionization zones in the transition between high and low current magnetron sputtering  

SciTech Connect (OSTI)

Past research has revealed the propagation of dense, asymmetric ionization zones in both high and low current magnetron discharges. Here we report about the direction reversal of ionization zone propagation as observed with fast cameras. At high currents, zones move in the E B direction with velocities of 103 to 104 m/s. However at lower currents, ionization zones are observed to move in the opposite, the -E B direction, with velocities ~;; 103 m/s. It is proposed that the direction reversal is associated with the local balance of ionization and supply of neutrals in the ionization zone.

School of Materials Science and Engineering, State Key Lab for Materials Processing and Die & Mold Technology, Huazhong University of Science and Technology, Wuhan 430074, China; Department of Physics, University of California Berkeley, Berkeley, California 94720, USA; Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA; Yang, Yuchen; Liu, Jason; Liu, Lin; Anders, André

2014-12-11T23:59:59.000Z

352

Extinction behavior in humans following successful reversal of performance deficits in learned helplessness  

E-Print Network [OSTI]

passively at the cards for 5 seconds per card, a time approximating the normal time spent per card by the other groups (Jones, et al. , TABLE 1 EXPERIMENTAL GROUPS Grou s ABR-NOT ABR-SOL ABR-H-CRF ABR-H-PRF EXT-NOT EXT-SOL EXT-H-CRF EXT... helplessness pretreatment responded with slower latencies on the first reversal trial block than did the pooled SOL and NOT groups. Secondly, it appears that by the last reversal trial block, such dif- ferences have attenuated and the groups are roughly...

Massad, Phillip Michael

1977-01-01T23:59:59.000Z

353

Enhancement of Time-Reversal Subwavelength Wireless Transmission Using Pulse Shaping  

E-Print Network [OSTI]

A novel time-reversal subwavelength transmission technique, based on pulse shaping circuits (PSCs), is proposed. Compared to previously reported approaches, this technique removes the need for complex or electrically large electromagnetic structures by generating channel diversity via pulse shaping instead of angular spectrum transformation. Moreover, the pulse shaping circuits (PSCs) are based on Radio Analog Signal Processing (R-ASP), and therefore do not suffer from the well-known issues of digital signal processing in ultrafast regimes. The proposed PSC time-reversal systems is mathematically shown to offer high channel discrimination under appropriate PSC design conditions, and is experimentally demonstrated for the case of two receivers.

Ding, Shuai; Zou, Lianfeng; Wang, Bingzhong; Caloz, Christophe

2014-01-01T23:59:59.000Z

354

Time-Resolved, Sub-Angstrom Imaging of Reversible and Irreversible Conformations in Rhodium Catalysts and Graphene  

E-Print Network [OSTI]

transparent samples of graphene and STO, respectively. RE Frhodium catalysts, graphene, reversible and irreversiblerhodium catalyst and a graphene sheet are investigated upon

Kisielowski, Christian

2014-01-01T23:59:59.000Z

355

Gas Separation by Adsorption in Order to Increase CO2 Conversion to CO via Reverse Water Gas Shift (RWGS) Reaction .  

E-Print Network [OSTI]

??In this research project, adsorption is considered in conjunction with the reverse water gas shift reaction in order to convert CO2 to CO for synthetic… (more)

Abdollahi, Farhang

2013-01-01T23:59:59.000Z

356

The feasibility of a unitised regenerative fuel cell with a reversible carbon-based hydrogen storage electrode.  

E-Print Network [OSTI]

??This thesis seeks to experimentally demonstrate the possibility of reversible storage of hydrogen directly into a carbon-based electrode of a PEM unitised regenerative fuel cell.… (more)

Jazaeri, M

2013-01-01T23:59:59.000Z

357

Gender determination in populus  

SciTech Connect (OSTI)

Gender, the expression of maleness or femaleness, in dioecious plants has been associated with changes in morphology, physiology, ecological position, and commercial importance of several species, including members of the Salicaceae family. Various mechanisms have been proposed to explain the expression of gender in Salicaceae, including sex chromosomes, simple Mendelian genes, quantitative genes, environment, and genotype-by-environment interactions. Published reports would favor a genetic basis for gender. The objective of this study was to identify molecular markers associated with gender in a segregating family of hybrid poplars. Bulked segregant analysis and chi-squared analysis were used to test for the occurrence of sex chromosomes, individual loci, and chromosome ratios (i.e., ploidy levels) as the mechanisms for gender determination. Examination of 2488 PCR based RAPD markers from 1219 primers revealed nine polymorphic bands between male and female bulked samples. However, linkage analysis indicated that none of these markers were significantly associated with gender. Chisquared results for difference in male-to-female ratios between diploid and triploid genotypes also revealed no significant differences. These findings suggest gender is not controlled via sex chromosomes, simple Mendelian loci or ratios of autosome to gender-determining loci. It is possible that gender is determined genetically by regions of the genome not sampled by the tested markers or by a complex of loci operating in an additive threshold manner or in an epistatic manner. It is also possible that gender is determined environmentally at an early zygote stage, canalizing gender expression.

McLetchie, D.N. [Univ. of Kentucky, Lexington, KY (United States). Dept. of Biological Sciences; Tuskan, G.A. [Oak Ridge National Lab., TN (United States)

1994-12-31T23:59:59.000Z

358

A 2-Approximation Algorithms for Genome Rearrangements by Reversals and Transpositions 1  

E-Print Network [OSTI]

A 2-Approximation Algorithms for Genome Rearrangements by Reversals and Transpositions 1 Qian of Texas at Dallas, Richardson, TX 75083 U.S.A. Keywords: Sorting of permutations, genome rearrangements: Recently, a new approach to analyze genomes evolving was proposed which is based on comparison of gene

Gu, Qianping

359

Proceedings of the Sudden Oak Death Third Science Symposium Detection of mRNA by Reverse  

E-Print Network [OSTI]

Proceedings of the Sudden Oak Death Third Science Symposium 85 Detection of mRNA by Reverse of mRNA as a viability marker, on the basis of its rapid degradation compared to DNA. We developed new di Palermo. Ant_chimento@yahoo.it. 3 UC Berkeley, Department of Environmental Science, Policy

Standiford, Richard B.

360

Magnetization reversal and exchange bias effects in hard/soft ferromagnetic bilayers with orthogonal anisotropies  

E-Print Network [OSTI]

The magnetization reversal processes are discussed for exchange-coupled ferromagnetic hard/soft bilayers made from Co[subscript 0.66]Cr[subscript 0.22]Pt[subscript 0.12] (10 and 20 nm)/Ni (from 0 to 40 nm) films with ...

Ross, Caroline A.

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Lithium Isotope History of Cenozoic Seawater: Changes in Silicate Weathering and Reverse Weathering  

Science Journals Connector (OSTI)

...low-temperature altered oceanic crust (AOC) via formation of Li-, Mg-, and Fe-bearing...is the sum of Li removal via MAAC and AOC formation during reverse weathering. The mass balance...FInput 29 15 Outputs Basalt alteration (AOC), FAOC 8 15 (7, 8, 17, 26) Sediment...

Sambuddha Misra; Philip N. Froelich

2012-02-17T23:59:59.000Z

362

Reversing the weak measurement of an arbitrary field with finite photon number  

E-Print Network [OSTI]

For an arbitrary field with finite photon number inside a leaky cavity, we show that the null-result measurement can be conditionally reversed, using either multiple atoms or a multilevel atom. Even with photons detected, a certain class of fields...

Sun, Qingqing; Al-Amri, M.; Zubairy, M. Suhail.

2009-01-01T23:59:59.000Z

363

Effects of pressure gradient on global Alfvén eigenmodes in reversed field pinch  

SciTech Connect (OSTI)

The effects of pressure gradient on the existence of global Alfvén eigenmodes (GAE) in Reversed Field Pinch are studied by numerical calculation. It is found that GAEs near the plasma core can exist when pressure gradient is sufficiently large. The calculated mode frequency and structure are consistent with the experimental results in the Madison Symmetric Torus.

Cai, Huishan, E-mail: hscai@mail.ustc.edu.cn [CAS Key Laboratory of Geospace Environment, Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)] [CAS Key Laboratory of Geospace Environment, Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China); Fu, Guoyong, E-mail: fu@pppl.gov [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Lin, Liang; Ding, Weixing; Brower, D. L. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States)] [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, California 90095 (United States); Liu, D. Y. [Physics Department, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)] [Physics Department, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Hu, Y. J. [Institute of Plasma Physics, CAS (China)] [Institute of Plasma Physics, CAS (China)

2014-02-15T23:59:59.000Z

364

ApJ (submitted) Synchrotron self-inverse Compton radiation from reverse shock on  

E-Print Network [OSTI]

ApJ (submitted) Synchrotron self-inverse Compton radiation from reverse shock on GRB120326A Yuji Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan 6 Center for the Exploration of the Origin-ku, Nagoya, Aichi 464- 8601, Japan 8 Division of Particle and Astrophysical Science, Graduate School

Pak, Soojong

365

Path following with backtracking based on fuzzy controllers for forward and reverse driving  

E-Print Network [OSTI]

considers a gearshift. Since fuzzy logic is a good intuitive technique for the control of nonlinear systemsPath following with backtracking based on fuzzy controllers for forward and reverse driving J vehicle guidance system based on fuzzy logic systems to re- solve unexpected road situations. A fuzzy

Paris-Sud XI, Université de

366

Reconnection phenomena during the formation phase of field-reversal experiments  

SciTech Connect (OSTI)

The results of hybrid simulations of the formation and the evolution to equilibrium of field-reversal experiment (FRX) configurations are presented. The observed rapid reconnection is explained in terms of forced reconnection driven by a Kruskal-Schwarzschild instability and the self-consistent production of toroidal magnetic field.

Hewett, D.W.; Seyler, C.E.

1981-06-08T23:59:59.000Z

367

Thermodynamic, Energy Efficiency, and Power Density Analysis of Reverse Electrodialysis Power Generation with Natural Salinity Gradients  

Science Journals Connector (OSTI)

Thermodynamic, Energy Efficiency, and Power Density Analysis of Reverse Electrodialysis Power Generation with Natural Salinity Gradients ... solns. of different salinities. ... River mouths are potentially abundant locations for the exploitation of the clean and renewable salinity gradient energy (SGE) as here perpetually fresh water mixes with saline seawater. ...

Ngai Yin Yip; David A. Vermaas; Kitty Nijmeijer; Menachem Elimelech

2014-04-03T23:59:59.000Z

368

On Polar Magnetic Field Reversal and Surface Flux Transport During Solar Cycle 24  

E-Print Network [OSTI]

As each solar cycle progresses, remnant magnetic flux from active regions (ARs) migrates poleward to cancel the old-cycle polar field. We describe this polarity reversal process during Cycle 24 using four years (2010.33--2014.33) of line-of-sight magnetic field measurements from the Helioseismic and Magnetic Imager. The total flux associated with ARs reached maximum in the north in 2011, more than two years earlier than the south; the maximum is significantly weaker than Cycle 23. The process of polar field reversal is relatively slow, north-south asymmetric, and episodic. We estimate that the global axial dipole changed sign in October 2013; the northern and southern polar fields (mean above 60$^\\circ$ latitude) reversed in November 2012 and March 2014, respectively, about 16 months apart. Notably, the poleward surges of flux in each hemisphere alternated in polarity, giving rise to multiple reversals in the north. We show that the surges of the trailing sunspot polarity tend to correspond to normal mean AR ...

Sun, Xudong; Liu, Yang; Zhao, Junwei

2014-01-01T23:59:59.000Z

369

Analysis of reverse combustion in tar sands: a one-dimensional model  

SciTech Connect (OSTI)

This paper describes a one-dimensional numerical model which simulates oil recovery from tar sands by reverse combustion. The method of lines is used to solve the nonlinear differential equations describing the flow. The effects of volumetric air flux on the peak temperature, flame velocity, and oil recovery efficiency are reported. The results are compared to the results of relevant experimental studies.

Amr, A.

1980-08-01T23:59:59.000Z

370

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak Experimenta...  

E-Print Network [OSTI]

Spheromak merging and field reversed configuration formation at the Swarthmore Spheromak- and counter-helicity spheromak merging studies at the Swarthmore Spheromak Experiment SSX M. R. Brown, Phys configuration FRC formation and stability by counter-helicity spheromak merging. A pair of midplane coils

Brown, Michael R.

371

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction  

E-Print Network [OSTI]

Field-reversed configuration formation scheme utilizing a spheromak and solenoid induction S. P FRC formation technique is described, where a spheromak transitions to a FRC with inductive current are suppressed; spheromaks with a lighter majority species, such as neon and helium, either display a terminal

Ji, Hantao

372

Observation of field-reversed configurations with spheromak magnetic field profiles  

Science Journals Connector (OSTI)

We report the first observation of field-reversed configurations with nearly force-free magnetic fields in the central region of the compact toroid. The field profiles and flux ratios suggest that some form of relaxation phenomenon is occurring in this high-? kinetic regime. The magnetic helicity of the translating plasmas arises from axial asymmetry, possibly through end-shorting Alfvén waves.

M. Tuszewski and B. L. Wright

1989-11-13T23:59:59.000Z

373

Average-case analysis of perfect sorting by reversals Mathilde Bouvel  

E-Print Network [OSTI]

genomics, is the process of sorting a signed permutation to either the identity or to the reversed identity example here: we perform an average case analysis of a sorting algorithm from computational genomics by generating function analysis of a family of trees. Motivation: a computational genomics problem

Boyer, Edmond

374

INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS  

E-Print Network [OSTI]

INDIRECT COST CALCULATION [IN REVERSE] YOU WANT TO CALCULATE THE DIRECT COSTS YOU KNOW WHAT THE TUITION, STIPEND AND EQUIPMENT COSTS ARE YOU KNOW WHAT THE TOTAL COST IS CALCULATION IS USING THE 2010 FED F&A RATE FOR WSU OF 52% (.52) [ DIRECT COST ­ TUITION ­ STIPEND ­ EQUIPMENT] (.52 ) + DIRECT

Finley Jr., Russell L.

375

Time-reversal invariance violation measurement using polarized neutron scattering from polarized xenon  

E-Print Network [OSTI]

We proposed to use polarized neutrons scattering from a hyperpolarized 131Xe gaseous target in order to measure time-reversal violation effect in baryon processes with nucleons. This article provides a brief introduction, historical review, and possible methods to construct a hyperpolarized 131Xe gaseous target.

Pinghan Chu

2014-03-06T23:59:59.000Z

376

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami-Beckner inequality  

E-Print Network [OSTI]

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami In this paper we study non-interactive correlation distillation (NICD), a generalization of noise sen- sitivity distillation (NICD), previously considered in [5, 31, 39]. In its most general form the problem involves k

O'Donnell, Ryan

377

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse  

E-Print Network [OSTI]

Non-interactive correlation distillation, inhomogeneous Markov chains, and the reverse Bonami In this paper we study non-interactive correlation distillation (NICD), a generalization of noise sensitivity in this paper is the problem of non-interactive correlation distil- lation (NICD), previously considered in [5

Regev, Oded

378

Linear Regression and Random Forests for Layer Identification in IC Layout Reverse-Engineering  

E-Print Network [OSTI]

050 051 052 053 Linear Regression and Random Forests for Layer Identification in IC Layout Reverse in the process; the bulk of the work consists of tracing from the die images the regions which form components, resistors, and capacitors. The common types of layers are the bulk (substrate, i.e. the base silicon

de Freitas, Nando

379

FUNDAMENTAL CHARACTERISTICS AND BEHAVIOR OF R.C. BRIDGE PIERS SUBJECTED TO REVERSED CYCLIC LOADING  

E-Print Network [OSTI]

FUNDAMENTAL CHARACTERISTICS AND BEHAVIOR OF R.C. BRIDGE PIERS SUBJECTED TO REVERSED CYCLIC LOADING Rizkalla, S.H.l, Saadat, F.2, Higai, T.3 ABSTRACT A total of sixteen large-scale reinforced concrete specimens without web reinforcements were tested to study the behavior of typical bridge piers subjected

380

Metal-Organic Framework Thin Films Composed of Free-Standing Acicular Nanorods Exhibiting Reversible Electrochromism  

E-Print Network [OSTI]

Reversible Electrochromism Chung-Wei Kung, Timothy Chiaan Wang, Joseph E. Mondloch, David Fairen electrochromic switching between yellow and deep blue by means of a one-electron redox reaction at its pyrene and rapid switching rate. KEYWORDS: electrochromism, metal-organic frameworks, one-dimensional nanorods

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC)  

E-Print Network [OSTI]

1 Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC, WA 98052 Abstract The effects on magnetic-field-line structure of adding various static transverse introduce pronounced shear. #12;2 I. Introduction Magnetic field lines are closed. Where closure occurs

382

Magnetization reversal through soliton flip in a biquadratic ferromagnet with varying exchange interactions  

Science Journals Connector (OSTI)

We study the phenomenon of magnetization reversal in the form of a soliton flip in a biquadratic ferromagnetic spin chain induced by varying bilinear and biquadratic exchange interactions. This is carried out by analyzing the evolution of the velocity and amplitude of the soliton using a perturbation analysis.

M. Daniel and L. Kavitha

2002-11-27T23:59:59.000Z

383

Sensitive Detection of Rare Circulating Neuroblastoma Cells by the Reverse Transcriptase-Polymerase Chain Reaction  

Science Journals Connector (OSTI)

...total volume of 50 n\\. One hundred units MMV reverse transcriptase (BRL) were added, and the reaction was allowed to pro ceed at 41 Cfor 1 h. The PCR mixture consisted of 5 n\\ 10 x Taq RT buffer (400 mm KC1, 0.1% gelatin), 5 n\\ 1 HIMdeoxynucleotide...

Leonard A. Mattano, Jr.; Thomas J. Moss; Stephen G. Emerson

1992-09-01T23:59:59.000Z

384

Steady and Transient Characteristics of Catalytic Flow Reverse Reactor Integrated with Central Heat Exchanger  

Science Journals Connector (OSTI)

Most projects among them employ thermal flow-reversal oxidizers. ... Methane is oxidized into CO2 and water, and its global warming potential is reduced by 87%. ... The regenerative combustion can achieve theoretically an autothermal run of system, even if methane in air is 0.2% v/v. ...

Sheng Wang; Diannan Gao; Shudong Wang

2014-07-28T23:59:59.000Z

385

Reverse Engineering for Biologically-Inspired Cognitive Architectures: A Critical Analysis  

E-Print Network [OSTI]

the opera- tional principles of organisms and brains to develop biologically inspired, artificial cognitive or reverse engineering. The indisputable complexity of brain and mind raise the issue of whether they can For some time past, computer science and engineering devote close attention to the functioning of the brain

Schierwagen, Andreas

386

Seismic reversal pattern for the 1999 Chi-Chi, Taiwan, MW 7.6 earthquake  

E-Print Network [OSTI]

Seismic reversal pattern for the 1999 Chi-Chi, Taiwan, MW 7.6 earthquake Yih-Min Wu a , Chien the variations in seismicity patterns in the Taiwan region before and after the Chi-Chi earthquake. We have found that the areas with relatively high seismicity in the eastern Taiwan became abnormally quiet before the Chi

Wu, Yih-Min

387

*See reverse side for all notes College of Engineering and Computer Science  

E-Print Network [OSTI]

*See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CHE 1550 3 CHE107 General Chemistry Lab 1 CHE 1550 1 CHE116 General Chemistry 2 CHE 1560 3 CHE117 General Chemistry Lab 2 CHE 1560 1 CHE275 Organic Chemistry 1 CHE 2530 3 CHE276 Organic Chemistry

Mather, Patrick T.

388

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. Engr Measurements 3 CIE274See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 1211 3 CHE107 General Chemistry Lab 1 CHEM 1211L 1 CHE116 General Chemistry 2 CHEM 1212 3

Mather, Patrick T.

389

*See reverse side for all notes College of Engineering and Computer Science  

E-Print Network [OSTI]

*See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CH 141 3 CHE107 General Chemistry Lab 1 CH 141 1 CHE116 General Chemistry 2 CH 142 3 CHE117 General Chemistry Lab 2 CH 142 1 CHE275 Organic Chemistry 1 CH 247 3 CHE276 Organic Chemistry Lab 1 CH 247

Mather, Patrick T.

390

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. Engr Measurements 3 CIE274See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 110 3 CHE107 General Chemistry Lab 1 CHEM 110 1 CHE116 General Chemistry 2 CHEM 111 3 CHE

Mather, Patrick T.

391

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

251 Thermodynamics (4) OR CHE346 Physical Chemistry (3) ENGR 2200 ENVIRONMENTAL ENGINEERING (35) D=12See reverse side for all notes College of Engineering & Computer Science Environmental Engineering Chemistry 1 CHEM 1510 3 CHE107 General Chemistry Lab 1 CHEM 1510 1 CHE116 General Chemistry 2 CHEM 1520 3

Mather, Patrick T.

392

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272 Civil & Envir. EngrSee reverse side for all notes College of Engineering & Computer Science Environmental Engineering. Equations & Matrix Algebra (3)____ 3 SCIENCES (20) CHE106 General Chemistry I (3)____ 3 CHE107 General

Mather, Patrick T.

393

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

) MAE251 Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35) D=12 CIE272See reverse side for all notes College of Engineering & Computer Science Environmental Engineering. Equations & Matrix Algebra *MA 260 3 SCIENCES (20) CHE106 General Chemistry 1 CH 141 3 CHE107 General

Mather, Patrick T.

394

See reverse side for all notes College of Engineering & Computer Science  

E-Print Network [OSTI]

(3 or 4) EE204 MAE251 Thermodynamics (4) CHE346 Physical Chemistry (3) ENVIRONMENTAL ENGINEERING (35See reverse side for all notes College of Engineering & Computer Science Environmental Engineering 3 MA443 4 MAT485 Diff. Equations & Matrix Algebra MA451 3 SCIENCES (20) CHE106 General Chemistry 1

Mather, Patrick T.

395

*See reverse side for all notes College of Engineering and Computer Science  

E-Print Network [OSTI]

*See reverse side for all notes College of Engineering and Computer Science Bioengineering NAME Chemistry 1 CHE 103 3 CHE107 General Chemistry Lab 1 CHE 103 1 CHE116 General Chemistry 2 CHE 104 3 CHE117 General Chemistry Lab 2 CHE 104 1 CHE275 Organic Chemistry 1 3 CHE276 Organic Chemistry Lab 1 2 PHY211

Mather, Patrick T.

396

Stochastic Processes and their Applications 115 (2005) 705736 Optimal partially reversible investment with entry  

E-Print Network [OSTI]

investment with entry decision and general production function Xin Guoa,Ã?, Huye^ n Phamb,c a School stochastic production capacity in reversible investments with controls of expansion and contraction entry-threshold of the capacity is reached, and invests in capital so as to maintain its capacity

Guo, Xin

397

Roles for Mitochondrial and Reverse Mode Na /Ca2 and the Plasmalemma Ca2  

E-Print Network [OSTI]

Roles for Mitochondrial and Reverse Mode Na /Ca2 Exchange and the Plasmalemma Ca2 ATPase in Post the processes regulating presynaptic cal- cium concentration ([Ca2 ]i ) in the generation of post-tetanic potentiation (PTP) at crayfish neuromuscular junctions, using spectrophotometric dyes to measure changes in [Ca

Zucker, Robert S.

398

Single Antenna Target Detection Using Broadband Frequency Selection Time Reversal Method  

E-Print Network [OSTI]

transmitter to probe the environment. In the absence of target, the background channel response is given by Hw/o(f) in Figure 2(b). When target comes into this environment, channel response changes to Hw/(f). The difference as shown in Figure 2(c). The target response is time-reversed and re-broadcasted into the environment

Moura, José

399

Oxygen Electrocatalysts for Water Electrolyzers and Reversible Fuel Cells: Status and Perspective  

SciTech Connect (OSTI)

Hydrogen production by electrochemical water electrolysis has received great attention as an alternative technology for energy conversion and storage. The oxygen electrode has a substantial effect on the performance and durability in water electrolyzers and reversible fuel cells because of its intrinsically slow kinetics for oxygen evolution/reduction and poor durability under harsh operating environments. To improve oxygen kinetics and durability of the electrode, extensive studies for highly active and stable oxygen electrocatalyst have been performed. However, due to the thermodynamic instability of transition metals in acidic media, noble metal compounds have been primarily utilized as electrocatalysts in water electrolyzers and reversible fuel cells. For water electrolyzer applications, single noble metal oxides such as ruthenium oxide and iridium oxide have been studied, and binary or ternary metal oxides have been developed to take synergestic effects of each component. On the other hand, a variety of bifunctional electrocatalysts with a combination of monofunctional electrocatalysts such as platinum for oxygen reduction and iridium oxide for oxygen evolution for reversible fuel cell applications have been mainly proposed. Practically, supported iridium oxide-on-platinum, its reverse type, and non-precious metal-supported platinum and iridium bifunctional electrocatalysts have been developed. Recent theoretical calculations and experimental studies in terms of water electrolysis and fuel cell technology suggest effective ways to cope with current major challenges of cost and durability of oxygen electrocatalysts for technical applications.

Park, Seh Kyu; Shao, Yuyan; Liu, Jun; Wang, Yong

2012-11-01T23:59:59.000Z

400

Rational Design of a Reversible pH-Responsive Switch for Peptide Self-Assembly  

E-Print Network [OSTI]

Rational Design of a Reversible pH-Responsive Switch for Peptide Self-Assembly Yuri Zimenkov interwound R-helices, has inspired the design of synthetic peptide systems that self-assemble be coupled to supramolecular structure to re-create the self-assembly behavior that is characteristic

Breedveld, Victor

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Spatial Complexity of Reversibly Computable DAG INRIA Saclay -le-de-France and  

E-Print Network [OSTI]

a lower bound of the spatial complexity of a DAG (directed acyclic graph) with reversible operations prior specific permission and/or a fee. cheaper in terms of energy. Thermal models are designed based balancing resources usage [23], or minimizing caches misses, or cutting unused devices. There is also

Paris-Sud XI, Université de

402

"Toru": a game that reverses the wisdom of age using mosquito sound  

Science Journals Connector (OSTI)

We propose "Toru," a game that reverses the game skills developed as a person ages using ultra-high-frequency (mosquito) sound. The game has its origin in the computer game Simon (1978), which we interpret from visual to auditory form using the mosquito ... Keywords: cognitive science, play, sound game

John Smith, Kazuhiro Jo

2014-10-01T23:59:59.000Z

403

Reverse-bias leakage current reduction in GaN Schottky diodes by electrochemical surface treatment  

E-Print Network [OSTI]

Reverse-bias leakage current reduction in GaN Schottky diodes by electrochemical surface treatment Received 15 July 2002; accepted 27 December 2002 An electrochemical surface treatment has been developed to the large power consumption and noise levels that can be present in circuits that incorporate such devices.1

Yu, Edward T.

404

Solutions to Homework -10 Problem-1: Reversed polished notation: 52x7+42/1+-  

E-Print Network [OSTI]

Solutions to Homework -10 Problem-1: Reversed polished notation: 52x7+42/1+- Generated code: BIPUSH when adding BCD numbers. While adding two numbers in 16-bit hex if we don't have carry out bit, it will generate an erroneous result for BCD format. The carry out of 3 bit provides AAA instruction to check

Grantner, Janos L.

405

DEVELOPMENT OF NONLINEAR TIME REVERSED ACOUSTICS (NLTRA) FOR APPLICATIONS TO CRACK DETECTION IN SOLIDS  

E-Print Network [OSTI]

of Nondestructive Evaluation (NDE) exhibit extremely high sensitivity to the presence of cracks. Time Reverse stones and long-distance communication in the ocean. The Nondestructive Evaluation (NDE) applications,4] and detection of cracks in a thin air-filled hollow cylinder [5]. A review of TRA applications to NDE is given

406

Plasma engineering design of a compact reversed-field pinch reactor (CRFPR)  

SciTech Connect (OSTI)

The rationale for and the characteristics of the high-power-density Compact Reversed-Field Pinch Reactor (CRFPR) are discussed. Particular emphasis is given to key plasma engineering aspects of the conceptual design, including plasma operations, current drive, and impurity/ash control by means of pumped limiters or magnetic divertors. A brief description of the Fusion-Power-Core integration is given.

Bathke, C.G.; Embrechts, M.J.; Hagenson, R.L.; Krakowski, R.A.; Miller, R.L.

1983-01-01T23:59:59.000Z

407

ccsd-00001798,version1-20Oct2004 Polarization Reversal of Electron Cyclotron Wave  

E-Print Network [OSTI]

cyclotron resonance heating is hoped to be the most effective method for the formation of confiningccsd-00001798,version1-20Oct2004 Polarization Reversal of Electron Cyclotron Wave Due to Radial with electron cyclotron resonance (ECR) frequency are experimentally and theoretically investigated for the case

Paris-Sud XI, Université de

408

Short Communication Aphasic patients exhibit a reversal of hemispheric asymmetries in categorical  

E-Print Network [OSTI]

Short Communication Aphasic patients exhibit a reversal of hemispheric asymmetries in categorical between colors that span a lexical boundary (``blue'' and ``green'') than speakers whose lan- guage does categories (e.g., a green target among blue distracters) compared to when the target and distracters were

Ivry, Rich

409

A new goodness of fit test: the reversed Berk-Jones statistic  

E-Print Network [OSTI]

probabilites (corresponding to the power of the tests) of our new bands with the (corrected version of) Owen confidence bands for F by inverting the Berk and Jones test, and then calculates the power associatedA new goodness of fit test: the reversed Berk-Jones statistic Leah Jager1 and Jon A. Wellner2

Washington at Seattle, University of

410

Statistical Analysis of the Fourth Case Study in Reverse Auction Research  

E-Print Network [OSTI]

study show that a Reverse Auction can result in an increase in the average cost of the job to the owner. Also, there is evidence of game play amongst the bidders and against the purchaser that causes their profits to rise as they gain proficiency...

Bhalerao, Aneesh Madhao

2011-10-21T23:59:59.000Z

411

Towards locally and globally shape-aware reverse 3D modeling  

Science Journals Connector (OSTI)

The process of re-creating CAD models from actual physical parts, formally known as digital shape reconstruction (DSR) is an integral part of product development, especially in re-design. While, the majority of current methods used in DSR are surface-based, ... Keywords: CAD model parameterization, Digital shape reconstruction, Reverse 3D modeling, Volumetric segmentation

Manish Goyal; Sundar Murugappan; Cecil Piya; William Benjamin; Yi Fang; Min Liu; Karthik Ramani

2012-06-01T23:59:59.000Z

412

Practical Potential of Reverse Electrodialysis As Process for Sustainable Energy Generation  

Science Journals Connector (OSTI)

Practical Potential of Reverse Electrodialysis As Process for Sustainable Energy Generation ... Post et al. studied the internal energetic losses in a RED stack for two different spacer thicknesses (0.2 and 0.5 mm) and concluded that decreasing the intermembrane distance (spacer thickness) could be beneficial for power generation, although not to the expected extent (4). ...

Piotr D?ugo??cki; Antoine Gambier; Kitty Nijmeijer; Matthias Wessling

2009-07-29T23:59:59.000Z

413

Categorical Exclusion (CX) Determination  

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

North Oakes tap of the Edgeley to Forman 69 kV line North Oakes tap of the Edgeley to Forman 69 kV line Description of Proposed Action: Central Power Electric Cooperative is proposing to tap into the Western Area Power Administration (Western) Edgeley to Forman 69 kV transmission line with a new substation to meet load growth in the Southeastern North Dakota area. Number and Title of Categorical Exclusions Being Applied: 10 CFR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CFR 1021.410(b), require the following determinations be made in order for a proposed action to be categorically

414

NEWTON: Determining Material Degradation  

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

Determining Material Degradation Determining Material Degradation Name: Hamish Status: student Grade: 6-8 Location: CA Country: USA Date: Summer 2013 Question: I am working on a science project about photo-degradation of plastic film. My question is how much degraded a plastic film should be to say that it was 100% photo-degraded? The plastic film I am photo-degrading is turning into dust when I touch it, what level of degradation is that? Replies: Hi Hamish, Thanks for the question. You will need to define what you mean by photo-degraded. 100% photo-degraded could be that the film becomes translucent and lets through only blurry images. Or it could mean that the film turns to dust when you touch it. As long as you clearly state in your science project what you mean by 100% photo-degraded, you will be doing a good job.

415

Categorical Exclusion (CX) Determination  

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

Circle substation expansion Circle substation expansion Description of Proposed Action: Expansion of the Circle substation approximately 4 acres to the south for the purpose of adding additional bays for the Keystone XL pipeline project. Number and Title of Categorical Exclusions Being Applied: 10 CFR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CFR 1021.410(b), require the following determinations be made in order for a proposed action to be categorically excluded from National Environmentally Policy Act (NEPA) review:

416

Categorical Exclusion (CX) Determination  

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

Addition of a new substation near Lake Bowdoin, MT. Addition of a new substation near Lake Bowdoin, MT. Description of Proposed Action: Addition of a new substation near Lake Bowdoin on Western's Fort Peck to Havre 161 k V transmission line for the purpose of providing power for a Keystone XL pipeline project pump station. Number and Title of Categorical Exclusions Being Applied: 10 CFR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CFR 1021.41 O(b), require the following determinations be made in order for a proposed action to be categorically

417

Mental Health, Determinants of  

Science Journals Connector (OSTI)

Abstract In this article, the authors first review differences between mental health and physical health conditions and explicitly consider how the health production function can be applied to mental health. They then review the research on the determinants of mental health, focusing on the contributions of economists to this literature. They focus on three important inputs to mental health production: income, macroeconomic conditions, and employment.

E. Golberstein; S.H. Busch

2014-01-01T23:59:59.000Z

418

Extension of the evaluation of reverse osmosis for SRC-I wastewater. Final technical report  

SciTech Connect (OSTI)

Reverse osmosis (R.O.) is an integral part of the zero discharge option for the proposed SRC-I Demonstration Plant. The original laboratory treatability testing program for reverse osmosis failed to demonstrate the technical feasibility of this process, due to problems with membrane fouling and deterioration. In that study (1), a high pressure (800 psi) polyether urea membrane for sea water and a low pressure (400 psi) cellulose diacetate membrane for brackish water failed to maintain reasonable TDS rejection rates during flat cell tests. The problem was particularly severe for the high pressure membrane. At the end of the original study, testing was continued on two additional low pressure membranes. One of these was a cellulose diacetate triacetate blend. The other was a new polyaramid membrane, which had only recently become commercially available. This report documents the results of all of the reverse osmosis laboratory tests. The wastewaters used in this study were effluents from bench scale, two-stage bioreactors, followed by tertiary treatment consisting of coagulation, softening, filtration, and granular activated carbon. The investigative program consisted of both immersion and flat cell tests. The results show tht the SRC-I wastewaters are difficult to treat by reverse osmosis with polyether urea or cellulose acetate membranes, and membrane failure was common. However, the new polyaramid membrane was found to be satisfactory when tested with a dephenolated feed stream. After over 1500 hours of continuous flat cell testing, it exhibited a TDS rejection rate of 95%. Based on these preliminary results, reverse osmosis does appear to be a technically feasible approach to achieve zero discharge, assuming the feed stream is dephenolated.

Not Available

1984-06-01T23:59:59.000Z

419

Optimized design of a heat exchanger for an air-to-water reversible heat pump working with propane (R290)  

E-Print Network [OSTI]

Optimized design of a heat exchanger for an air-to-water reversible heat pump working with propane-to-water reversible heat pump unit was carried out using two different fin-and-tube heat exchanger ``coil'' designs concepts. The performance of the heat pump was evaluated for each coil design at different superheat

Fernández de Córdoba, Pedro

420

Reverse Engineering and Analysis of Genome-Wide Gene Regulatory Networks from Gene Expression Profiles Using High-Performance Computing  

Science Journals Connector (OSTI)

Regulation of gene expression is a carefully regulated phenomenon in the cell. "Reverse-engineering” algorithms try to reconstruct the regulatory interactions among genes from genome-scale measurements of gene expression profiles (microarrays). ... Keywords: Reverse engineering, gene regulatory network, clustering algorithm, parallel computing.

Vincenzo Belcastro; Francesco Gregoretti; Velia Siciliano; Michele Santoro; Giovanni D'Angelo; Gennaro Oliva; Diego di Bernardo

2012-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

THE JOURNAL OF CHEMICAL PHYSICS 134, 054512 (2011) Water dynamics in small reverse micelles in two solvents: Two-dimensional  

E-Print Network [OSTI]

= 2 (1.7 nm diameter) Aerosol-OT (AOT)/water reverse micelles in carbon tetrachloride and in isooctane that the reverse micelle dynamics are the same within experimental error regardless of whether isooctane or carbon tetrachloride is used as the organic phase. Two time scales are observed in the vibrational echo data, 1 and 10

Fayer, Michael D.

422

A feasibility study of municipal wastewater desalination using electrodialysis reversal to provide recycled water for horticultural irrigation  

Science Journals Connector (OSTI)

Abstract A membrane desalination system based on electrodialysis reversal (EDR) has been evaluated for its capacity to remove salt from treated municipal wastewater to provide a source of recycled water for horticultural applications. Economic and technical feasibility was determined using data collected from a pilot scale plant, from which the following parameters were calculated: salt removal, water recovery and overall process economics. The pilot plant consisted of a pre-treatment multimedia filtration unit (MMF) and an EDR system with a capacity of approximately 144 kL/day. Treated effluent from a wastewater treatment plant (WWTP) was used as feed water for the desalination pilot plant. Water quality guidelines for horticulture specify an upper limit for total dissolved solids (TDS) of 375 mg/L. The EDR process reduced the TDS from 1104 mg/L to 328 mg/L. Additionally, the process reduced the conductivity of recycled water by 72%, including the removal of 84% calcium, 76% chloride, 59% fluoride, 64% alkalinity and 60% phosphate, demonstrating that the EDR treated water is a viable alternative supply. The power consumption of the EDR plant was found to be 0.6 kW h/kL and the media filtration 0.4 kW/kL. The total operating cost was estimated to be 18 cents/kL to deliver 82% water recovery.

Nigel B. Goodman; Russell J. Taylor; Zongli Xie; Yesim Gozukara; Allan Clements

2013-01-01T23:59:59.000Z

423

Categorical Exclusion (CX) Determination  

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

Letcher to Mitchell 115 kV transmission line to Western's Letcher to Mitchell 115 kV transmission line to Western's Letcher substation. Description of Proposed Action: Interconnection of Northwestern Energy's 115 kV Letcher to Mitchell transmission line at Western's Letcher substation. Northwestern Energy is proposing to build a 14.5 mile transmission line between their Mitchell substation and Western's Letcher substation to shore up reliability of their electrical system in the area. Number and Title of Categorical Exclusions Being Applied: 10 CFR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CFR 1021.41 O(b), require the

424

Categorical Exclusion (CX) Determination  

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

Movement of the Shirley Pump substation to a new site away from Movement of the Shirley Pump substation to a new site away from Yellowstone River and replacement of the Shirley Pump substation transformer. Description of Proposed Action: Move the existing Shirley Pump substation approximately 200 meters to the southeast away from its current location and the Yellowstone River as well as replace the aging transformer with a new one. Number and Title of Categorical Exclusions Being Applied: 10 CPR 1021.410 Subpart D, Appendix B, B4.11: Construction of electric power substations ... or modification of existing substations and support facilities. Regulatory Requirements for CX Determination: The DOE Guidelines for Compliance with the Regulatory Requirements for the National Environmental Policy Act at 10 CPR 1021.41 O(b),

425

Categorical Exclusion Determination Form  

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

t t Categorical Exclusion Determination Form Proposed Action Title: (0471-1563) University of South Florida - Development of a Low Cost Thermal Energy Storage System Using Phase Change Materials with Enhanced Radiation Heat Transfer Program or Field Office: Advanced Research Projects Agency - Energy Location(s) (City/County/State): Tampa, FL Proposed Action Description: Funding will support development of low cost, industrially scalable capsules containing high-temperature phase change materials (PCMs) for use in thermal energy storage (TES) systems to enable continuous power supply from concentrated solar thermal and nuclear power plants. No nuclear research and development activities will take place under this project. ARPA-E has undertaken a review of the work to be performed

426

Categorical Exclusion Determination Form  

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

n rgy n rgy Categorical Exclusion Determination Form Proposed Action Title: (0474-1555) University of Colorado - Boulder - Wafer-Level Sub-Module Integrated DCfDC Converter Program or Field Office: Advanced Research Projects Agency - Energy LocationCs) CCity/County/State): Colorado, Maine, Virginia Proposed Action Description: Funding will support development of a planar, wafer-level sub-module integrated converter (SubMIC) device that can be integrated into various types of photovoltaic (PV) modules to enable low-cost maximum power point tracking at high power processing efficiencies. Proposed work consists of indoor laboratory-based research and development (R&D), microfabrication activities, and analytical research, including: (1) simulated modeling and design of SubMIC components and integrated units, (2) development, fabrication, testing, and optimization

427

Categorical Exclusion Determination Form  

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

1537) Utah State University - 1537) Utah State University - Robust Cell-Level Modeling and Control of Large Battery Packs Program or Field Office: Advanced Research Projects Agency - Energy LocationCs) CCity/County/State): Logan, UT; Colorado Springs, CO; Boulder, CO; Golden, CO; Dearborn, MI Proposed Action Description: Funding will support efforts to develop a novel battery pack architecture supported by algorithms to drive analysis, feedback, and operability. Proposed work will consist of: (1) performing a requirements analysis to determine optimal theoretical design for the battery pack; (2) design and theoretical optimization of the necessary algorithms to control and monitor the cells in the pack; (3) creation , testing, and analysis of a proof-of- concept unit; and (4) application of the algorithmic controls to a commercial battery pack to analyze performance.

428

Categorical Exclusion Determination Form  

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

ergy ergy Categorical Exclusion Determination Form Proposed Action Title: (0472-1569) G~tomics - Double Sator Switched Reluctance Motor (DSSRM) Technology Progi'am or Field Office: Advanced Research Projects Agency - Energy Location(s) (City/County/State): San Diego, CA Proposed Action Description: General Atomics, in conjunction with the University of Texas-Dallas (UT Dallas), proposes to develop double-stator switched reluctance motor (DSSRM) for electric vehicles (EVs) that will eliminate the use of permanent magnet-based motors that rely on rare earth metals in EVs. General Atomics' application was selected for an initial 18-month period (Phase 1) of funding. The ARPA-E Program Director may decide to negotiate and fund project activities for an additional 18-month period (Phase II) after evaluating the work performed in Phase I. ARPA-E has not obligated

429

Ultratrace determination of curium  

SciTech Connect (OSTI)

Development of a method for detection of curium at near single atom levels is being undertaken as a part of the Advanced Concepts Project at Argonne National Laboratory with funding from the US Department of Energy, Office of Arms Control and Nonproliferation. Ultratrace determination of curium, with the ability to quantify the fraction that is curium-242, provides a signature method of detecting clandestine reprocessing of recently irradiated uranium targets. Curium initially present in any of a variety of materials such as air filters, solid or liquid process waste, soil, flora, or fauna can be recovered via current chemical separations processing techniques. Using the ultratrace method being developed, such recovered curium will be quantified with thousand-fold higher sensitivity than the best currently available method which is alpha counting. This high sensitivity arises because, on average, a given trivalent curium (Cm{sup 3+}) ion can emit a very large number of fluorescence photons before alpha decay occurs.

Beitz, J.V.

1995-02-01T23:59:59.000Z

430

Categorical Exclusion Determination Form  

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

y y Categorical Exclusion Determination Form Proposed Action Title: (0471-1595) Regents of the University of Minnesota - Thermal Fuel: Solar Fuels via Partial Redox Cycles with Heat Recovery Program or Field Office: Advanced Research Projects Agency - Energy LocationCs) CCity/County/State): Minnesota, California, and Colorado. Proposed Action Description: Funding will support development of a dual zone solar thermochemical reactor to produce fuel using ceria-based reactive materials in partial redox cycles and high heat recovery levels through counter-circulation of solid state components. Proposed work consists of indoor laboratory-based research and development, including: (1) designing, fabricating, and characterizing an optimized ceria-based reactive element for use in the reactor to enable maximum fuel productivity and durability; (2) designing and fabricating a

431

Categorical Exclusion Determination Form  

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

of n y of n y Categorical Exclusion Determination Form Proposed Action Title: (0471-1607) University of Florida - Solar Thermochemical Fuel Production via a Novel Low Pressure, Magnetically Stabilized, Non-Volatile Iron Oxide Looping Process Program or Field Office: Advanced Research Projects Agency - Energy LocationCs) CCity/County/State): Gainesville, FL Proposed Action Description: University of Florida proposes to develop a novel solar thermochemical reactor with inputs of water, recycled carbon dioxide (C02), and concentrated solar energy to cost-effectively produce Syngas, a renewable, carbon-neutral fuel. Project activities will include: (1) modeling, design, and fabrication of a high efficiency 1 OkW reactor prototype; (2) test analysis of bench-scale

432

Cat Dish Bacteria Determination  

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

Dish Bacteria Determination Dish Bacteria Determination Name: Ashlyn Status: student Grade: 6-8 Location: FL Country: USA Date: Summer 2011 Question: Is there a simple way to measure bacteria in cat's water dishes without doing something with Agar? To measure bacteria in a water bowl, do I need to use a microscope? I am thinking of using different materials (metal, plastic, and glass) to see which of those has the grows the most bacteria. Replies: Hello Ashlyn, That is a very good idea for a science project. Usually the best way to do a quantitative analysis of bacteria content is to take a measured amount of a liquid, plate it out on some type of agar and do a colony count. This will give a basic indication of bacterial load, but not differentiate the types of bacteria. The most common type of bacteria that causes a pink film to form on water bowls and showers, etc. is Serratia marcescens. It is a fairly harmless organism that reacts with standing water. It may only adhere to the walls of the container and not be 'free floating' in the water. A microscope would not likely help unless you were able to do special stains to help see the bacteria. You might also want to add stoneware or ceramic to your list. Just so you know stoneware or ceramic make the best containers for cats to drink out of. It keeps the water fresher: Maybe less bacteria? You might just have to rely on a visual inspection of the containers to see which has more pink per surface area.

433

Molecular Characterization of the Bacterial Communities in the Different Compartments of a Full-Scale Reverse-Osmosis Water Purification Plant  

Science Journals Connector (OSTI)

...Full-Scale Reverse-Osmosis Water Purification Plant Published ahead of print...reverse-osmosis (RO) membrane water purification plant were analyzed by molecular...full-scale membrane-based water purification processes was examined using...

L. A. Bereschenko; G. H. J. Heilig; M. M. Nederlof; M. C. M. van Loosdrecht; A. J. M. Stams; G. J. W. Euverink

2008-07-11T23:59:59.000Z

434

Structural basis for reversible photobleaching of a green fluorescent protein homologue  

SciTech Connect (OSTI)

Fluorescent protein (FP) variants that can be reversibly converted between fluorescent and nonfluorescent states have proven to be a catalyst for innovation in the field of fluorescence microscopy. However, the structural basis of the process remains poorly understood. High-resolution structures of a FP derived from Clavularia in both the fluorescent and the light-induced nonfluorescent states reveal that the rapid and complete loss of fluorescence observed upon illumination with 450-nm light results from cis-trans isomerization of the chromophore. The photoinduced change in configuration from the well ordered cis isomer to the highly nonplanar and disordered trans isomer is accompanied by a dramatic rearrangement of internal side chains. Taken together, the structures provide an explanation for the loss of fluorescence upon illumination, the slow light-independent recovery, and the rapid light-induced recovery of fluorescence. The fundamental mechanism appears to be common to all of the photoactivatable and reversibly photoswitchable FPs reported to date.

Henderson, J. Nathan; Ai, Hui-wang; Campbell, Robert E.; Remington, S. James (Alberta); (Oregon)

2008-09-03T23:59:59.000Z

435

Reverse logistics and closed-loop supply chain: A comprehensive review to explore the future  

Science Journals Connector (OSTI)

Abstract Based on environmental, legal, social, and economic factors, reverse logistics and closed-loop supply chain issues have attracted attention among both academia and practitioners. This attention is evident by the vast number of publications in scientific journals which have been published in recent years. Hence, a comprehensive literature review of recent and state-of-the-art papers is vital to draw a framework of the past, and to shed light on future directions. The aim of this paper is to review recently published papers in reverse logistic and closed-loop supply chain in scientific journals. A total of 382 papers published between January 2007 and March 2013 are selected and reviewed. The papers are then analyzed and categorized to construct a useful foundation of past research. Finally, gaps in the literature are identified to clarify and to suggest future research opportunities.

Kannan Govindan; Hamed Soleimani; Devika Kannan

2015-01-01T23:59:59.000Z

436

A hybrid thermochemical-electrolytic process for hydrogen production based on the Reverse Deacon Reaction.  

SciTech Connect (OSTI)

Development has been initiated on a three-reaction, hybrid thermochemical-electrolytic process for splitting water into hydrogen and oxygen. This process can be run at 500 C, making it suitable for linking to nuclear reactors that run colder than the very highest temperature gas cooled reactors. This feature also makes the materials requirements less stringent than for high temperature cycles, many of which require temperatures in the range of 800-900 C. The process consists of three reactions - two thermochemical and one electrolytic. The thermochemical reactions sum to the reverse Deacon reaction. The electrolytic step involves the electrolysis of anhydrous HCl. The estimated energy savings for this process relative to electrolysis of water are in the vicinity of 15%, due to the low energy requirements of anhydrous HCl electrolysis. Preliminary experimental results indicate that a silicalite-supported catalyst for the reverse Deacon reaction has the potential of promoting fast reaction kinetics and long-term stability of the solids.

Simpson, M. F.; Herrmann, S. D.; Boyle, B. D.; Engineering Technology

2006-08-01T23:59:59.000Z

437

Reversible Dehydrogenation of Magnesium Borohydride to Magnesium Triborane in the Solid State Under Moderate Conditions  

SciTech Connect (OSTI)

Thermal decomposition of magnesium borohydride, Mg(BH4)2, in the solid state was studied by a combination of PCT, TGA/MS and NMR spectroscopy. Dehydrogenation of Mg(BH4)2 at 200 °C, results in the highly selective formation of magnesium triborane, Mg(B3H8)2. This process is reversible at 250 °C under 120 atm H2. Dehydrogenation at higher temperature, > 300 °C, produces a complex mixture of polyborane species. Solution phase 11B NMR spectra of the hydrolyzed decomposition products reveals the formation of the B3H8 anion, boric acid from hydrolysis of the unstable polyboranes (BnHx) (n = 3-11, x >8), and the closoborane B12H12 dianion as a minor product. A BH condensation mechanism involving metal hydride formation is proposed to explain the limited reversible hydrogen storage in magnesium borohydride.

Chong, Marina; Karkamkar, Abhijeet J.; Autrey, Thomas; Orimo, Shin-ichi; Jalisatgi, Satish; Jensen, Craig M.

2011-02-17T23:59:59.000Z

438

ATP-independent reversal of a membrane protein aggregate by a chloroplast SRP subunit  

SciTech Connect (OSTI)

Membrane proteins impose enormous challenges to cellular protein homeostasis during their post-translational targeting, and they require chaperones to keep them soluble and translocation competent. Here we show that a novel targeting factor in the chloroplast signal recognition particle (cpSRP), cpSRP43, is a highly specific molecular chaperone that efficiently reverses the aggregation of its substrate proteins. In contrast to 'ATPases associated with various cellular activities' (AAA{sup +}) chaperones, cpSRP43 uses specific binding interactions with its substrate to mediate its 'disaggregase' activity. This disaggregase capability can allow targeting machineries to more effectively capture their protein substrates and emphasizes a close connection between protein folding and trafficking processes. Moreover, cpSRP43 provides the first example to our knowledge of an ATP-independent disaggregase and shows that efficient reversal of protein aggregation can be attained by specific binding interactions between a chaperone and its substrate.

Jaru-Ampornpan, Peera; Shen, Kuang; Lam, Vinh Q.; Ali, Mona; Doniach, Sebastian; Jia, Tony Z.; Shan, Shu-ou (CIT); (Stanford)

2010-07-23T23:59:59.000Z

439

Recycling nickel electroplating rinse waters by low temperature evaporation and reverse osmosis  

SciTech Connect (OSTI)

Low temperature evaporation and reverse osmosis systems were each evaluated (on a pilot scale) on their respective ability to process rinse water collected from a nickel electroplating operation. Each system offered advantages under specific operating conditions. The low temperature evaporation system was best suited to processing solutions with relatively high (greater than 4,000 to 5,000 mg/L) nickel concentrations. The reverse osmosis system was best adapted to conditions where the feed solution had a relatively low (less than4,000 to 5,000 mg/L) nickel concentration. In electroplating operations where relatively dilute rinse water solutions must be concentrated to levels acceptable for replacement in the plating bath, a combination of the two technologies might provide the best process alternative.

Lindsey, T.C.; Randall, P.M.

1993-08-01T23:59:59.000Z

440

Mechanism of Thermal Reversal of the (Fulvalene)tetracarbonyldiruthenium Photoisomerization: Toward Molecular Solar-Thermal Energy Storage  

SciTech Connect (OSTI)

In the currently intensifying quest to harness solar energy for the powering of our planet, most efforts are centered around photoinduced generic charge separation, such as in photovoltaics, water splitting, other small molecule activation, and biologically inspired photosynthetic systems. In contrast, direct collection of heat from sunlight has received much less diversified attention, its bulk devoted to the development of concentrating solar thermal power plants, in which mirrors are used to focus the sun beam on an appropriate heat transfer material. An attractive alternative strategy would be to trap solar energy in the form of chemical bonds, ideally through the photoconversion of a suitable molecule to a higher energy isomer, which, in turn, would release the stored energy by thermal reversal. Such a system would encompass the essential elements of a rechargeable heat battery, with its inherent advantages of storage, transportability, and use on demand. The underlying concept has been explored extensively with organic molecules (such as the norbornadiene-quadricyclane cycle), often in the context of developing photoswitches. On the other hand, organometallic complexes have remained relatively obscure in this capacity, despite a number of advantages, including expanded structural tunability and generally favorable electronic absorption regimes. A highly promising organometallic system is the previously reported, robust photo-thermal fulvalene (Fv) diruthenium couple 1 {l_reversible} 2 (Scheme 1). However, although reversible and moderately efficient, lack of a full, detailed atom-scale understanding of its key conversion and storage mechanisms have limited our ability to improve on its performance or identify optimal variants, such as substituents on the Fv, ligands other than CO, and alternative metals. Here we present a theoretical investigation, in conjunction with corroborating experiments, of the mechanism for the heat releasing step of 2 {yields} 1 and its Fe (4) and Os (6) relatives. The results of the combined study has enabled a rigorous interpretation of earlier and new experimental measurements and paint a surprising picture. First-principles calculations were employed based on spin unrestricted density functional theory (DFT) with a non-empirical gradient corrected exchange-correlation functional. Ultrasoft pseudopotentials were used to describe the valence-core interactions of electrons, including scalar relativistic effects of the core. Wavefunctions and charge densities were expanded in plane waves with kinetic energies up to 25 and 200 Rydberg, respectively. Reaction pathways were delineated with the string method, as implemented within the Car-Parrinello approach. This method allows for the efficient determination of the minimum energy path (MEP) of atomistic transitions and thus also saddle points (transition states, TSs), which are the energy maxima along the MEP. All geometries were optimized until all forces on the atoms were less than 0.02 eV/{angstrom}. The calculated structures of 1 and 2 were in good agreement with their experimental counterparts.

Kanai, Y; Srinivasan, V; Meier, S K; Vollhardt, K P; Grossman, J C

2010-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Reversible LNG  

Science Journals Connector (OSTI)

An important feature of gas supply is the diurnal variation that occurs. This variation is associated with fluctuations in domestic and industrial demand hour by hour through the day. There is a surplus of gas...

T. H. Malyn; M. R. Creed

1978-01-01T23:59:59.000Z

442

Non-axisymmetric equilibrium reconstruction for stellarators, reversed field pinches and tokamaks  

SciTech Connect (OSTI)

Axisymmetric equilibrium reconstruction using magnetohydrodynamic equilibrium solutions to the Grad Shafranov equation has long been an important tool for interpreting tokamak experiments. This paper describes recent results in non-axisymmetric (three-dimensional) equilibrium reconstruction of nominally axisymmetric plasmas (tokamaks and reversed field pinches (RFPs)), and fully non-axisymmetric plasmas (stellarators). Results from applying the V3FIT code to CTH and HSX stellarator plasmas, RFX-mod RFP plasmas and the DIII-D tokamak are presented.

Hanson, James D. [Auburn University, Auburn, Alabama; Anderson, D.T. [University of Wisconsin, Madison; Cianciosa, M. [Auburn University, Auburn, Alabama; Franz, P. [EURATOM / ENEA, Italy; Harris, J. H. [Oak Ridge National Laboratory (ORNL); Hartwell, G. H. [Auburn University, Auburn, Alabama; Hirshman, Steven Paul [ORNL; Knowlton, Stephen F. [Auburn University, Auburn, Alabama; Lao, Lang L. [General Atomics, San Diego; Lazarus, Edward Alan [ORNL; Marrelli, L. [Association EURATOM ENEA Fusion, Consorzio RFX, Padua, Italy; Maurer, D. A. [Auburn University, Auburn, Alabama; Schmitt, J. C. [Princeton Plasma Physics Laboratory (PPPL); Sontag, A. C. [Oak Ridge National Laboratory (ORNL); Stevenson, B. A. [Auburn University, Auburn, Alabama; Terranova, D. [Association EURATOM ENEA Fusion, Consorzio RFX, Padua, Italy

2013-01-01T23:59:59.000Z

443

Electron density and temperature profile diagnostics for C-2 field reversed configuration plasmas  

SciTech Connect (OSTI)

The 9-point Thomson scattering diagnostic system for the C-2 field reversed configuration plasmas is improved and the measured electron temperature profiles are consistent with theoretical expectations. Rayleigh scattering revealed a finite line width of the ruby laser emission, which complicates density calibration. Taking advantage of the plasma wobble motion, density profile reconstruction accuracy from the 6-chord two-color CO{sub 2}/HeNe interferometer data is improved.

Deng, B. H.; Kinley, J. S.; Schroeder, J. [Tri Alpha Energy, Inc., Rancho Santa Margarita, California 92688 (United States)

2012-10-15T23:59:59.000Z

444

Production of field-reversed mirror plasma with a coaxial plasma gun  

DOE Patents [OSTI]

The use of a coaxial plasma gun to produce a plasma ring which is directed into a magnetic field so as to form a field-reversed plasma confined in a magnetic mirror. Plasma thus produced may be used as a target for subsequent neutral beam injection or other similarly produced and projected plasma rings or for direct fusion energy release in a pulsed mode.

Hartman, Charles W. (Alamo, CA); Shearer, James W. (Livermore, CA)

1982-01-01T23:59:59.000Z

445

Performance of cholesterol oxidase sequestered within reverse micelles formed in supercritical carbon dioxide  

SciTech Connect (OSTI)

The authors report the first results on an enzyme-induced reaction within the water core of reverse micelles that have been formed in supercritical CO{sub 2} (scCO{sub 2}). By using a perfluoropolyether ammonium carboxylate (PFPE) surfactant, the authors form reverse micelles in scCO{sub 2} with water cores and the authors show that the oxidation of cholesterol by cholesterol oxidase (ChOx) obeys Michaelis-Menten kinetics. The results of their experiments also show that (1) the optimum ChOx activity occurs when the molar ratio of H{sub 2}O-to-PFPE (R) exceeds {approximately}12, (2) the rate constant describing the conversion of the ChOx-cholesterol complex to product ({kappa}{sub cat,app}) is similar to values reported using reverse micelle systems formed in liquid alkanes, (3) the equilibrium constant that describes the ChOx-cholesterol complex dissociation (K{sub m,app}) is optimal at high R values, (4) the best-case K{sub m,app} is {approximately}2-fold better than the value reported using reverse micelles formed in liquid alkanes, (5) there is little change in the ChOx {kappa}{sub cat,app} and K{sub m,app} as the authors adjust the CO{sub 2} pressure between 100 and 260 bar, and (6) the ChOx was active within the PFPE water pool for at least 5 h; however, after 8 or more hours within the PFPE water pool, ChOx became temporarily inactive.

Kane, M.A.; Baker, G.A.; Pandey, S.; Bright, F.V.

2000-05-30T23:59:59.000Z

446

Conceptual design of a reversed-field pinch fusion neutron source  

SciTech Connect (OSTI)

The conceptual design of an ohmically-heated, reversed-field pinch (RFP) operating with a 5-MWm/sup 2/ steady-state DT fusion neutron wall loading while generating /approximately/100-MW total fusion power is presented. These results are also useful in projecting the development of an economic source of DT neutrons for large-volume (/approximately/10 m/sup 3/) fusion nuclear testing. 6 refs., 4 figs., 5 tabs.

Bathke, C.G.; Krakowski, R.A.; Manzanares, R.G.; Miller, R.L.; Werley, K.A.

1988-01-01T23:59:59.000Z

447

Final report for the field-reversed configuration power plant critical-issue scoping study  

SciTech Connect (OSTI)

This report describes research in which a team from the Universities of Wisconsin, Washington, and Illinois performed a scoping study of critical issues for field-reversed configuration (FRC) power plants. The key tasks for this research were (1) systems analysis of deuterium-tritium (D-T) FRC fusion power plants, and (2) conceptual design of the blanket and shield module for an FRC fusion core.

Santarius, John F.; Mogahed, Elsayed A.; Emmert, Gilbert A.; Khater, Hesham Y.; Nguyen, Canh N.; Ryzhkov, Sergei V.; Stubna, Michael D.; Steinhauer, Loren C.; Miley, George H.

2001-03-01T23:59:59.000Z

448

Water treatment by reverse osmosis. (Latest citations from the U. S. Patent data base). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations of selected patents concerning water purification systems and components using reverse osmosis technology. Patents include purification systems and devices for seawater, waste water, and drinking water. Topics also include complete purification systems, valves and distribution components, membranes, supports, storage units, and monitors. Water purification systems using activated charcoal are referenced in a related bibliography. (Contains a minimum of 135 citations and includes a subject term index and title list.)

Not Available

1992-10-01T23:59:59.000Z

449

Ultralong quantum optical storage using reversible inhomogeneous spin ensembles with an optical locking method  

E-Print Network [OSTI]

A novel method of multi-bit quantum optical data storage is presented, where the storage time can be lengthened far beyond the spin phase-decay time in a reversible spin inhomogeneous system excited by consecutive resonant Raman optical data pulses. The ultralong storage time is obtained by an optical population locking mechanism of modified rephasing process. This gives potentials to quantum repeaters utilizing quantum memories for long distance quantum communications, in which ultralong storage time plays a major role.

Byoung S. Ham

2008-04-23T23:59:59.000Z

450

New method for inductively forming an oblate field reversed configuration from a spheromak  

Science Journals Connector (OSTI)

A new method for inductively forming a field reversed configuration is demonstrated, based on the inductively driven transformation of a spheromak. The driven transition can be achieved in argon and krypton plasmas, in which MHD modes are suppressed; simulations indicate that stability through the transition is explained by magnetic diffusion. Spheromaks with lighter working gas, such as neon and helium, either display a tilt mode or an n = 2 kink instability, both resulting in discharge termination.

S.P. Gerhardt; E.V. Belova; M. Yamada; H. Ji; M. Inomoto; Y. Ren; B. McGeehan

2008-01-01T23:59:59.000Z

451

A CH O Hydrogen Bond Stabilized Polypeptide Chain Reversal Motif at the C Terminus of Helices  

E-Print Network [OSTI]

A C­H· · ·O Hydrogen Bond Stabilized Polypeptide Chain Reversal Motif at the C Terminus of Helices of Science Bangalore 560012, India The serendipitous observation of a C­H· · ·O hydrogen bond mediated­N hydrogen bond involving the side- chain of residue T 2 4 and the N­H group of residue T þ 3. In as many

Babu, M. Madan

452

Improving reverse logistics processes using item-level product life cycle management  

Science Journals Connector (OSTI)

Sustainability is a key issue for companies offering products and services on the global market. The ever-increasing worldwide demand for raw materials in combination with the rising costs for materials and energy challenges companies to make their products, processes and services more sustainable. More and more customers are demanding sustainable products and services due to their increased awareness about environmental protection. By providing access to data, information and knowledge about products and services the concept of product life cycle management (PLM) can be applied to reverse logistics processes to improve sustainability. The term PLM and, therefore, the functionality of existing PLM systems must be considered as quite different. This paper introduces the concept of item-level PLM. It investigates the requirements that item-level PLM systems must fulfil in order to support sustainability in reverse logistics processes in an appropriate manner. Existing item-level PLM solutions are then investigated according to their suitability in the field of reverse logistics.

Carl Hans; Karl A. Hribernik; Klaus-Dieter Thoben

2010-01-01T23:59:59.000Z

453

Kinetic simulations of the formation and stability of the field-reversed configuration  

SciTech Connect (OSTI)

The Field-Reversed Configuration (FRC) is a high-beta compact toroidal plasma confined primarily by poloidal fields. In the FRC the external field is reversed on axis by the diamagnetic current carried by thermal plasma particles. A three-dimensional, hybrid, particle-in-cell (zero-inertia fluid electrons, and kinetic ions), code FLAME, previously used to study ion rings [Yu. A. Omelchenko and R. N. Sudan, J. Comp. Phys. 133, 146 (1997)], is applied to investigate FRC formation and tilt instability. Axisymmetric FRC equilibria are obtained by simulating the standard experimental reversed theta-pinch technique. These are used to study the nonlinear tilt mode in the ''kinetic'' and ''fluid-like'' cases characterized by ''small'' ({approx}3) and ''large'' ({approx}12) ratios of the characteristic radial plasma size to the mean ion gyro-radius, respectively. The formation simulations have revealed the presence of a substantial toroidal (azimuthal) magnetic field inside the separatrix, generated due to the stretching of the poloidal field by a sheared toroidal electron flow. This is shown to be an important tilt-stabilizing effect in both cases. On the other hand, the tilt mode stabilization by finite Larmor radius effects has been found relatively insignificant for the chosen equilibria. (c) 2000 American Institute of Physics.

Omelchenko, Yu. A. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)] [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

2000-05-01T23:59:59.000Z

454

Effects of acute sleep deprivation on motor and reversal learning in mice  

Science Journals Connector (OSTI)

Abstract Sleep supports the formation of a variety of declarative and non-declarative memories, and sleep deprivation often impairs these types of memories. In human subjects, natural sleep either during a nap or overnight leads to long-lasting improvements in visuomotor and fine motor tasks, but rodent models recapitulating these findings have been scarce. Here we present evidence that 5 h of acute sleep deprivation impairs mouse skilled reach learning compared to a matched period of ad libitum sleep. In sleeping mice, the duration of total sleep time during the 5 h of sleep opportunity or during the first bout of sleep did not correlate with ultimate gain in motor performance. In addition, we observed that reversal learning during the skilled reaching task was also affected by sleep deprivation. Consistent with this observation, 5 h of sleep deprivation also impaired reversal learning in the water-based Y-maze. In conclusion, acute sleep deprivation negatively impacts subsequent motor and reversal learning and memory.

Andrew W. Varga; Mihwa Kang; Priyanka V. Ramesh; Eric Klann

2014-01-01T23:59:59.000Z

455

Development of mobile, on-site engine coolant recycling utilizing reverse-osmosis technology  

SciTech Connect (OSTI)

This paper presents the history of the development of self-contained, mobile, high-volume, engine coolant recycling by reverse osmosis (R/O). It explains the motivations, created by government regulatory agencies, to minimize the liability of waste generators who produce waste engine coolant by providing an engine coolant recycling service at the customer`s location. Recycling the used engine coolant at the point of origin minimizes the generators` exposure to documentation requirements, liability, and financial burdens by greatly reducing the volume of used coolant that must be hauled from the generator`s property. It describes the inherent difficulties of recycling such a highly contaminated, inconsistent input stream, such as used engine coolant, by reverse osmosis. The paper reports how the difficulties were addressed, and documents the state of the art in mobile R/O technology. Reverse osmosis provides a purified intermediate fluid that is reinhibited for use in automotive cooling systems. The paper offers a review of experiences in various automotive applications, including light-duty, medium-duty and heavy-duty vehicles operating on many types of fuel. The authors conclude that mobile embodiments of R/O coolant recycling technology provide finished coolants that perform equivalently to new coolants as demonstrated by their ability to protect vehicles from freezing, corrosion damage, and other cooling system related problems.

Kughn, W. [Toxguard Fluid Technologies, Irvine, CA (United States). CEO; Eaton, E.R. [Penray Companies, Inc., Elk Grove Village, IL (United States)

1999-08-01T23:59:59.000Z

456

Cross flow filtration for radwaste applications reverse osmosis demonstration case studies  

SciTech Connect (OSTI)

Today`s radwaste economic and regulatory scenarios signify the importance in the improvement of operational practices to reduce generator liabilities. This action is largely due to the rising cost dealing with burial sites and the imposed waste volume restriction. To control the economical burdens associated with waste burial and to comply with stricter environmental regulations, NPP`s are attempting to modify their radwaste system(s) design and operating philosophy by placing a major emphasis on waste volume reduction and processing techniques. The utilization of reverse osmosis technology as a means for treatment of process and wastewater streams in the nuclear power industry has been investigated for many years. This paper will outline reverse osmosis theory and highlight performance data for process and waste stream purification applications. Case studies performed at 5 nuclear plants have been outlined. The demonstrations were performed on a widely variety of process stream for both a PWR and BWR application. The data provided by the pilot systems, the equipment design, and the economical impact a reverse osmosis unit will have on producing treated (high purity) are as follows.

Malkmus, D. [VECTRA Technologies, Inc., Columbia, SC (United States)

1995-05-01T23:59:59.000Z

457

Characterization of Rio Blanco retort 1 water following treatment by lime-soda softening and reverse osmosis  

SciTech Connect (OSTI)

Laboratory research was initiated to evaluate the chemical, physical, and toxicological characteristics of treated and untreated Rio Blanco oil shale retort water. Wet chemical analyses, metals analyses, MICROTOX assays and particle-size analysis were performed on the wastewater before and after treatment by lime-soda softening and reverse osmosis. The reverse osmosis system successfully removed dissolved solids and organics from the wastewater. Based on MICROTOX tests, the water was much less toxic after treatment by reverse osmosis. 8 refs., 7 figs., 8 tabs.

Kocornik, D.J.

1985-12-01T23:59:59.000Z

458

Methods to determine the size distribution of airborne rhinovirus  

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

Methods to determine the size distribution of airborne rhinovirus Methods to determine the size distribution of airborne rhinovirus Title Methods to determine the size distribution of airborne rhinovirus Publication Type Report Year of Publication 2004 Authors Russell, Marion L., Regine Goth-Goldstein, Michael G. Apte, and William J. Fisk Publisher Lawrence Berkeley National Laboratory Abstract About 50% of viral-induced respiratory illnesses are caused by the human rhinovirus (HRV). Prior research has demonstrated that rhinovirus infections can be transmitted via person-to-person contact and via inhalation of infectious aerosols. Measurements of the concentrations and sizes of bioaerosols are critical for research on building characteristics, aerosol transport, and mitigation measures. To detect airborne HRV, we developed a quantitative reverse transcription-coupled polymerase chain reaction (RT-PCR) assay and verified that this assay detects HRV in nasal lavage samples. A quantitation standard was used to determine the assay detection limit of 5 fg of HRV RNA with a linear range over 10,000-fold. This assay was used to quantify the size distribution of an artificially-produced HRV aerosol captured with an Andersen six-stage cascade impactor. In future studies, we hope to use the methods developed here to characterize the size distribution of naturally occurring viral-aerosols

459

Usage of Nonporous Polymeric Particles for Reversed-Phase High-Performance Liquid Chromatography of Oxidized and Deamidated Forms of Recombinant Human Growth Hormone  

Science Journals Connector (OSTI)

...July 2004 research-article Articles Usage of Nonporous Polymeric Particles for Reversed-Phase...chromatographic separation of several hGH variants. Usage of nonporous polymeric particles for reversed-phase...Chromatographic Science, Vol. 42, July 2004 Usage of Nonporous Polymeric Particles for Reversed-Phase......

Göran Karlsson

2004-07-01T23:59:59.000Z

460

Determinations | Building Energy Codes Program  

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

Regulations Regulations Site Map Printable Version Development Adoption Compliance Regulations Determinations Federal Buildings Manufactured Housing Resource Center Determinations Commercial Determinations Residential Determinations Final Determination on ASHRAE Standard 90.1-2010 On October 19, 2011, DOE issued a final determination that ASHRAE Standard 90.1-2010 would achieve greater energy efficiency in buildings subject to the standard than if they were built to ASHRAE Standard 90.1-2007. View the complete final determination notice that appeared in the Federal Register on October 19, 2011. View the complete preliminary determination notice that appeared in the Federal Register on July 20, 2011. State Certification This final determination is being published before the two year deadline

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Non-local kinetic transport studies of a Field-Reversed Configuration. Annual technical report, July 1, 1990--June 30, 1991  

SciTech Connect (OSTI)

A computer code was developed and tested, during this past period, to determine the global, linear kinetic stability of a one-dimensional Field-Reversed Configuration (FRC). A difficulty in verifying the code for fully electromagnetic perturbations caused the model to be simplified so that it would be easier to verify. The changes in the model were going from a fully electromagnetic field operator to an electrostatic field operator. The resultant simplifications allowed the code to be tested against well-known, analytic results from elementary plasma physics. This report will review the physical assumptions used to model the plasma and describe the extra assumptions inherent in using an electrostatic model. In addition, the rationale for simplifying the model and the results of the test of the model will be presented.

Choi, Chan K.

1991-12-31T23:59:59.000Z

462

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Vegetative response to metal exposure in a growing media Vegetative response to metal exposure in a growing media Savannah River Site Aiken/Aiken/South Carolina The objective of this project is to determine vegetation's physiological response to metal exposure in the growing media. 772-27B Lab 4 will contain two plant growth chambers with a refrigerator for sample storage. Activities will include: growing plants from seed in soil, agar and hydroponically and the monitoring of plant growth for signature responses. After harvest, plants will be processed and analyzed in 772-27B Labs 3 and/or 17, and 772-25B Lab 2. Processing will consist of weighing and separation of plant by tissue (root, stem, leaf). Laboratory instruments and equipment including spectrometers, spectrophotometers, bioanalyzer, reverse transcription polymerase chain reaction equipment, and others

463

Categorical Exclusion Determination Form Proposed Action Title: (0471-1554) Pacific Northwest National Laboratory -  

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

partme t nerg partme t nerg Categorical Exclusion Determination Form Proposed Action Title: (0471-1554) Pacific Northwest National Laboratory - Reversible Metal Hydride Thermal Storage for High Temeprative Power Generation Systems Program or Field Office: Advanced Research Projects Agency - Energy LocationCs) CCity/County/State): Utah and Washington Proposed Action Description: Funding will support development of a novel, metal hydride-based thermal energy storage (TES) system for use with concentrated solar power or nuclear power generating systems. Proposed work consists of indoor laboratory-based research and development, including (1) materials synthesis, characterization, and testing to develop and optimize reversible metal hydride materials, (2) design and fabrication of a bench-scale 3kWh prototype TES unit, and (3) testing,

464

Experimental forward and reverse in situ combustion gasification of lignite with production of hydrogen-rich syngas  

Science Journals Connector (OSTI)

This research focused on the feasibility of applying the forward and reverse combustion approach to the in situ gasification of lignite with the production of hydrogen-rich syngas (H2 and CO). The so-called forwa...

Yong Cui; Jie Liang; Zhangqing Wang…

2014-03-01T23:59:59.000Z

465

Reliable Gene Expression Analysis by Reverse Transcription-Quantitative PCR: Reporting and Minimizing the Uncertainty in Data Accuracy  

Science Journals Connector (OSTI)

...Hasselt University, 3590 Diepenbeek, Belgium b Hasselt University, 3590 Diepenbeek, Belgium [W] Online version contains Web-only data. [OPEN] Articles can be viewed online without a subscription. Reverse transcription-quantitative PCR (RT-qPCR...

Tony Remans; Els Keunen; Geert Jan Bex; Karen Smeets; Jaco Vangronsveld; Ann Cuypers

2014-10-31T23:59:59.000Z

466

Extreme Resistance of Superhydrophobic Surfaces to Impalement: Reversible Electrowetting Related to the Impacting/Bouncing Drop Test  

E-Print Network [OSTI]

Extreme Resistance of Superhydrophobic Surfaces to Impalement: Reversible Electrowetting Related drop impact impalement and electrowetting (EW) experiments. A correlation between the resistance) is one of the most promising techniques to carry out elementary operations on droplets, like displacement

Brunet, Philippe

467

The Impact of RELAP5 Pipe Break Flow Rates Associated With Reverse Flow Limiter Removal for Steam Generator Replacement  

SciTech Connect (OSTI)

Pipe break flow rates are calculated for a main feedwater line break (FWLB) in the main steam valve vault (MSVV) for a PWR Steam Generator Replacement (SGR). A reverse flow limiter is installed in the original steam generator (OSG) feedwater nozzle to limit the blowdown flowrate in the event of a postulated FWLB. This feature is not incorporated in the replacement steam generator (RSG) design. The change in RSG nozzle design in conjunction with new operating conditions results in increased FWLB mass and energy releases which can impact environmental temperatures and pressures and flooding levels. In the United States, benchmarking for safety related analyses is necessary in consideration of 10CFR50.59 requirements. RELAP5/MOD3 is used to model the pipe break flowrates for a FWLB at different break locations. The benchmark FWLB blowdown releases are larger than the OSG design basis blowdown releases due to differences in RELAP5/MOD3 versions which are found to have different algorithms for subcooled choked flow. The SGR FWLB blowdown release rates are determined to have minimal impact on the compartment temperature and pressure response. However, the flooding levels and associated equipment qualification are potentially impacted. Modeling techniques used to minimize the impact of the SGR blowdown releases on MSVV flooding levels include modeling flashing effects, more realistic RSG temperature distribution, inventory depletion and Auxiliary Feedwater (AFW) flow initiation time, and considering loss of offsite power scenarios. A detailed flooding hazard evaluation is needed, which considers the actual main feedwater isolation times to ensure that environmentally qualified safety related components, required to mitigate the effects of a FWLB inside the MSVV, can perform their safety function prior to being submerged. (authors)

Dong Zheng; Jarvis, Julie M.; Vieira, Allen T. [Bechtel Power Corporation, Frederick, Maryland (United States)

2006-07-01T23:59:59.000Z

468

On-Site Pilot Study - Removal of Uranium, Radium-226 and Arsenic from Impacted Leachate by Reverse Osmosis - 13155  

SciTech Connect (OSTI)

Conestoga-Rovers and Associates (CRA-LTD) performed an on-site pilot study at the Welcome Waste Management Facility in Port Hope, Ontario, Canada, to evaluate the effectiveness of a unique leachate treatment process for the removal of radioactive contaminants from leachate impacted by low-level radioactive waste. Results from the study also provided the parameters needed for the design of the CRA-LTD full scale leachate treatment process design. The final effluent water quality discharged from the process to meet the local surface water discharge criteria. A statistical software package was utilized to obtain the analysis of variance (ANOVA) for the results from design of experiment applied to determine the effect of the evaluated factors on the measured responses. The factors considered in the study were: percent of reverse osmosis permeate water recovery, influent coagulant dosage, and influent total dissolved solids (TDS) dosage. The measured responses evaluated were: operating time, average specific flux, and rejection of radioactive contaminants along with other elements. The ANOVA for the design of experiment results revealed that the operating time is affected by the percent water recovery to be achieved and the flocculant dosage over the range studied. The average specific flux and rejection for the radioactive contaminants were not affected by the factors evaluated over the range studied. The 3 month long on-site pilot testing on the impacted leachate revealed that the CRA-LTD leachate treatment process was robust and produced an effluent water quality that met the surface water discharge criteria mandated by the Canadian Nuclear Safety Commission and the local municipality. (authors)

McMurray, Allan; Everest, Chris; Rilling, Ken [Conestoga-Rovers and Associates, 651 Colby Dr, Waterloo, ON (Canada)] [Conestoga-Rovers and Associates, 651 Colby Dr, Waterloo, ON (Canada); Vandergaast, Gary [Atomic Energy of Canada Ltd, 115 Toronto Road, Port Hope, ON (Canada)] [Atomic Energy of Canada Ltd, 115 Toronto Road, Port Hope, ON (Canada); LaMonica, David [RoChem Membrane Systems Inc., 430 30th Street, Hermosa Beach, CA (United States)] [RoChem Membrane Systems Inc., 430 30th Street, Hermosa Beach, CA (United States)

2013-07-01T23:59:59.000Z

469

Watts nickel and rinse water recovery via an advanced reverse osmosis system  

SciTech Connect (OSTI)

The report summarizes the results of an eight month test program conducted at the Hewlett Packard Printed Circuit Board Production Plant, Sunnyvale, CA (H.P.) to assess the effectiveness of an advanced reverse osmosis system (AROS). The AROS unit, manufactured by Water Technologies, Inc. (WTI) of Minneapolis, MN, incorporates membrane materials and system components designed to treat metal plating rinse water and produce two product streams; (1) a concentrated metal solution suitable for the plating bath, and (2) rinse water suitable for reuse as final rinse. Waste water discharge can be virtually eliminated and significant reductions realized in the need for new plating bath solution and rinse water.

Schmidt, C.; White, I.E.; Ludwig, R.

1993-08-01T23:59:59.000Z

470

Use of PER977 to Reverse the Anticoagulant Effect of Edoxaban  

Science Journals Connector (OSTI)

...anticoagulation with each of the new oral agents. In nonclinical studies, PER977 did not bind to plasma proteins, including albumin, and showed no binding when tested against several common cardiovascular, antiepileptic, and anesthetic drugs. In this study, we assessed the safety, side-effect profile, and effect... To the Editor: New target-specific oral anticoagulants are limited by the lack of a proven reversal agent. PER977 (Perosphere) is a small, synthetic, water-soluble, cationic molecule that is designed to bind specifically to unfractionated heparin and low-...

2014-11-05T23:59:59.000Z

471

Local Wettability Reversal during Steady-State Two-Phase Flow in Porous Media  

E-Print Network [OSTI]

We study the effect of local wettability reversal on remobilizing immobile fluid clusters in steady-state two-phase flow in porous media. We consider a two dimensional network model for porous medium and introduce a wettability alteration mechanism. A qualitative change in the steady state flow patterns, destabilizing the percolating and trapped clusters, is observed as the system wettability is varied. When capillary forces are strong a finite wettability alteration is necessary to move the system from single-phase to two-phase flow regime. For the case of both phases being mobile we find a linear relationship between fractional flow and wettability alteration.

Sinha, Santanu; Ødegården, Torgeir Bryge; Skjetne, Erik; Hansen, Alex; 10.1103/PhysRevE.84.037303

2012-01-01T23:59:59.000Z

472

Formation of field reversed configuration by magnetic reconnection of two spheromaks  

Science Journals Connector (OSTI)

A novel slow formation method of field?reversed configuration (FRC) has been developed by magnetic reconnection of two spheromaks with opposite toroidal field. As a result of merging of two spheromaks with opposite helicity the initial toroidal fields cancel with each other and total toroidal field is reduced to zero. The ? value of the final plasma produced is as large as 0.8 (±0.2) indicating a transition of its equilibrium from spheromak to FRC. A significant increase of the ion temperature has been measured during the reconnection period.

Yasushi Ono; Makoto Katsurai; Masaaki Yamada

1994-01-01T23:59:59.000Z

473

Reclamation of Cleaning Water Using Ultrafiltration and Double Pass Reverse Osmosis  

E-Print Network [OSTI]

. Because of the commitment to minimize process generated wastes, an integrated ultrafiltration (UF) and reverse osmosis (RO) system was installed to reclaim the cleaning water at the PPG Industries, Inc. (PPG) Cleveland, Ohio plant. The recovered water... 590 590 590 600 595 600 590 INLET TORO PSIG 550 590 590 590 600 595 600 590 PSIG 540 580 580 580 595 590 590 585 INTO RO-CIP INTO UF-CIP Temperature Conductivity GPM GPM 2.0 8.5 2.0 6.0 2.0 6.0 1.0 6.0 1.8 5.5 1.9 5...

Neuman, T.; Long, G.; Tinter, M.

474

Development of a Reverse Logistics Performance Measurement System for a Battery Manufacturer  

Science Journals Connector (OSTI)

Abstract In this contribution, the case of a leading Lead Acid Battery manufacturer in India is studied with respect to the essential reverse logistics operations of the company, due to the statutory requirements regarding toxic components in the product. The critical parameters are ascertained by a methodology interviews with the company's management and further consolidated using the taxonomy as suggested by the Balanced Scorecard approach. Then, a performance measurement system vis-à-vis the industry benchmark, over a sustained period, is proposed, using Fuzzy Analytical Hierarchical Process.

Milind Bansia; Jayson K. Varkey; Saurabh Agrawal

2014-01-01T23:59:59.000Z

475

Laser remanufacturing based on the integration of reverse engineering and laser cladding  

Science Journals Connector (OSTI)

Laser remanufacturing has been used as an approach to refurbish or to improve the surface quality of high-priced parts. However, most of the existing systems lack measuring and modelling functions, which results in the uncertainty of the quality of end products. This paper presents a three-dimensional Laser Remanufacturing System (LRS) based on the integration of reverse engineering and laser cladding. A coaxial powder feeding system is developed to meet the requirement of three-dimensional laser cladding. Meanwhile, the geometric and mechanical properties of metal parts of layers fabricated by LRS are explored. In addition, the principal, advantages and applications of the LRS system are described.

Liangliang Nan; Weijun Liu; Kai Zhang

2010-01-01T23:59:59.000Z

476

Role of reversibility in viral capsid growth: A paradigm for self-assembly  

E-Print Network [OSTI]

Self-assembly at submicroscopic scales is an important but little understood phenomenon. A prominent example is virus capsid growth, whose underlying behavior can be modeled using simple particles that assemble into polyhedral shells. Molecular dynamics simulation of shell formation in the presence of an atomistic solvent provides new insight into the self-assembly mechanism, notably that growth proceeds via a cascade of strongly reversible steps and, despite the large variety of possible intermediates, only a small fraction of highly bonded forms appear on the pathway.

D. C. Rapaport

2008-10-03T23:59:59.000Z

477

Watermelon-like iron nanoparticles: Cr doping effect on magnetism and magnetization interaction reversal  

SciTech Connect (OSTI)

Chromium (Cr) forms a solid solution with iron (Fe) lattice when doped in core-shell iron -iron oxide nanocluster (NC) and shows a mixed phase of sigma (?) FeCr and bcc Fe. The Cr dopant affects heavily the magnetization and magnetic reversal process, and causes the hysteresis loop to shrink near the zero field axis. Dramatic transformation happens from dipolar interaction (0 at. % Cr) to strong exchange interaction (8 at. % of Cr) is confirmed from the Henkel plot and delta M plot, and is explained by a water-melon model of core-shell NC system.

Kaur, Maninder; Dai, Qilin; Bowden, Mark E.; Engelhard, Mark H.; Wu, Yaqiao; Tang, Jinke; Qiang, You

2013-06-26T23:59:59.000Z

478

Assessing cell polarity reversal degradation phenomena in PEM fuel cells by electrochemical impedance spectroscopy  

Science Journals Connector (OSTI)

Electrochemical impedance spectroscopy (EIS) is identified as one of the most promising in-situ diagnostics tools available for assessing fuel cell ageing and degradation. In this work, the degradation phenomena caused by cell polarity reversal due to fuel starvation of an open cathode 16 membrane electrode assembly (MEA) – low power (PEM) fuel cell (15 W nominal power) – is reported using EIS as a base technique. Measuring the potential of individual cells, while the fuel cell is on load, was found instrumental in assessing the “state of health” of cells at fixed current. Location of affected cells, those farthest away from hydrogen entry in the stack, was revealed by very low or even negative potential values. EIS spectra were taken at selected break-in periods during fuel cell functioning. The analysis of impedance data was made using an a priori equivalent circuit describing the transfer function of the system in question – equivalent circuit elements were evaluated by a complex non-linear least square (CNLS) fitting algorithm, and by calculating and analyzing the corresponding distribution of relaxation times (DRT). Results and interpretation of cell polarity reversal due to hydrogen starvation were complemented with ex-situ MEA cross section analysis, using scanning electron microscopy. Electrode thickness reduction and delamination of catalyst layers were observed as a result of reactions taking place during hydrogen starvation. Carbon corrosion and membrane degradation by fluoride depletion are discussed.

M.A. Travassos; Vitor V. Lopes; R.A. Silva; A.Q. Novais; C.M. Rangel

2013-01-01T23:59:59.000Z

479

Reversible zwitterionic liquids, the reaction of alkanol guanidines, alkanol amidines, and diamines with CO2  

SciTech Connect (OSTI)

Carbon dioxide chemistry is increasingly relevant to real-world issues, thanks to global warming. Key chemistry issues currently being studied are the capture, storage, and utilization of CO2. While the relevance of capture and storage are obvious, the relevance of CO2 utilization is less clear. Although CO2 utilization is unlikely to consume significant quantities of CO2, it can be an significant strategy for the development of sustainable processes. As part of our research efforts towards CO2 utilization, some of us invented switchable solvents, meaning solvents that can switch reversibly from one version to another.1Our original version was a mixture of an amidine and an alcohol (equation 1, where B is a liquid amidine), but since then we and others have developed others such as guanidine/alcohol mixtures (equation 1, where B is a liquid guanidine),2 amidine/primary amine mixtures,3 and secondary amines (equation 2).4Switchable solvents of these types all convert from a low-polarity to a high-polarity ionic liquid form upon exposure to an atmosphere of CO2 and revert back to the low polarity form when the CO2 is removed by heat or flushing with inert gas. We also demonstrated that these switchable solvents can be used as reversible CO2-binding organic liquids (CO2BOLs) for CO2 capture, and are more energy-efficient in that role than aqueous solutions of ethanolamine.

Heldebrant, David J.; Koech, Phillip K.; Ang, Trisha; Liang, Chen; Rainbolt, James E.; Yonker, Clement R.; Jessop, Philip G.

2010-04-01T23:59:59.000Z

480

Metal Hydride Thermal Storage: Reversible Metal Hydride Thermal Storage for High-Temperature Power Generation Systems  

SciTech Connect (OSTI)

HEATS Project: PNNL is developing a thermal energy storage system based on a Reversible Metal Hydride Thermochemical (RMHT) system, which uses metal hydride as a heat storage material. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. PNNL’s metal hydride material can reversibly store heat as hydrogen cycles in and out of the material. In a RHMT system, metal hydrides remain stable in high temperatures (600- 800°C). A high-temperature tank in PNNL’s storage system releases heat as hydrogen is absorbed, and a low-temperature tank stores the heat until it is needed. The low-cost material and simplicity of PNNL’s thermal energy storage system is expected to keep costs down. The system has the potential to significantly increase energy density.

None

2011-12-05T23:59:59.000Z

Note: This page contains sample records for the topic "determination battelle-cascade reverse" 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

Magnetic cycles of the planet-hosting star Tau Bootis: II. a second magnetic polarity reversal  

E-Print Network [OSTI]

In this paper, we present new spectropolarimetric observations of the planet-hosting star Tau Bootis, using ESPaDOnS and Narval spectropolarimeters at Canada-France-Hawaii Telescope (CFHT) and Telescope Bernard Lyot (TBL), respectively. We detected the magnetic field of the star at three epochs in 2008. It is a weak magnetic field of only a few Gauss, oscillating between a predominant toroidal component in January and a dominant poloidal component in June and July. A magnetic polarity reversal was observed relative to the magnetic topology in June 2007. This is the second such reversal observed in two years on this star, suggesting that Tau Boo has a magnetic cycle of about 2 years. This is the first detection of a magnetic cycle for a star other than the Sun. The role of the close-in massive planet in the short activity cycle of the star is questioned. Tau Boo has strong differential rotation, a common trend for stars with shallow convective envelope. At latitude 40 deg., the surface layer of the star rotate...

Fares, R; Moutou, C; Bohlender, D; Catala, C; Deleuil, M; Shkolnik, E; Cameron, A C; Jardine, M M; Walker, G A H

2009-01-01T23:59:59.000Z

482

Metalized T graphene: A reversible hydrogen storage material at room temperature  

SciTech Connect (OSTI)

Lithium (Li)-decorated graphene is a promising hydrogen storage medium due to its high capacity. However, homogeneous mono-layer coating graphene with lithium atoms is metastable and the lithium atoms would cluster on the surface, resulting in the poor reversibility. Using van der Waals-corrected density functional theory, we demonstrated that lithium atoms can be homogeneously dispersed on T graphene due to a nonuniform charge distribution in T graphene and strong hybridizations between the C-2p and Li-2p orbitals. Thus, Li atoms are not likely to form clusters, indicating a good reversible hydrogen storage. Both the polarization mechanism and the orbital hybridizations contribute to the adsorption of hydrogen molecules (storage capacity of 7.7?wt. %) with an optimal adsorption energy of 0.19?eV/H{sub 2}. The adsorption/desorption of H{sub 2} at ambient temperature and pressure is also discussed. Our results can serve as a guide in the design of new hydrogen storage materials based on non-hexagonal graphenes.

Ye, Xiao-Juan; Zhong, Wei, E-mail: csliu@njupt.edu.cn, E-mail: wzhong@nju.edu.cn; Du, You-Wei [Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093 (China); Liu, Chun-Sheng, E-mail: csliu@njupt.edu.cn, E-mail: wzhong@nju.edu.cn [Key Laboratory of Radio Frequency and Micro-Nano Electronics of Jiangsu Province, Nanjing University of Posts and Telecommunications, Nanjing 210023 (China); Zeng, Zhi [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China)

2014-09-21T23:59:59.000Z

483

Reverse osmosis concentrate treatment by a PAC countercurrent four-stage adsorption/MF hybrid process  

Science Journals Connector (OSTI)

Abstract In this study, in order to reduce the impact of reverse osmosis concentrate (ROC) on the receiving body of water and/or improve the recovery rate of reverse osmosis (RO) system by reusing the treated ROC as a feeding, a powdered activated carbon (PAC) countercurrent four-stage adsorption/MF hybrid process was developed for organic removal from ROC. The process could achieve good organic removal at lower PAC consumption. For dissolved organic carbon (DOC) removal efficiency of 70.0%, the PAC dose was 21.6% less than that in countercurrent two-stage adsorption and 50.9% less than that in single-stage adsorption. The calculation method for correlating removal efficiency and PAC dose was deduced and validated. The validation result showed that the relative error between the average experimental DOC removal efficiency and the calculated one was less than 5% throughout the experiment, exhibiting good accuracy for the calculation method. Compared with countercurrent two-stage adsorption, the membrane fouling in the new process could be mitigated to a certain extent. The total number of sub-cycles in a cycle (n) influenced the hydraulic retention time (HRT) and the total volume of the reactors. Results showed that the HRT increased as n increased.

Xiaozhu Wei; Ping Gu; Guanghui Zhang

2014-01-01T23:59:59.000Z

484

Modeling of reverse osmosis in the presence of strong solute-membrane affinity  

SciTech Connect (OSTI)

Modeling of reverse osmosis in the presence of strong solute-membrane affinity has always been a challenge due to the complexity of the solute-solvent-membrane interactions and the resultant effect on membrane performance. Most transport models, including all models treating membranes as nonporous and those based on irreversible thermodynamics, are unable to describe or to predict all of the phenomena associated with this case. Recently, the modified surface force-pore flow model has been derived and used to describe the performance of reverse osmosis membranes for solutes which are rejected from the membrane. In the present work, this model is extended to a more general form which can describe the solute-membrane affinity case. For illustration, the extended model, with five adjustable parameters, is used to describe the performance for cellulose acetate membranes and dilute aqueous solutions of toluene, cumene, and p-chlorophenol (data from literature). The model is reasonably consistent with the data. Simulation results of the extended model are also shown.

Mehdizadeh, H.; Dickson, J.M. (McMaster Univ., Hamilton, Ontario (Canada))

1993-03-01T23:59:59.000Z

485

Treatment of effluents arising from a material characterization laboratory, using chemical precipitation and reverse osmosis processes  

SciTech Connect (OSTI)

Owing to the restrictions imposed by the Regulations, mainly in the field of effluent release into a water body, it`s necessary to use a set of technologies that will help meeting the standards established by these regulations. Taking into account what was exposed above, a process for treating the effluents arising from a Material Characterization Laboratory, that will characterize nuclear materials is proposed in this paper. The process proposed uses chemical precipitation for removing chemicals which can be removed by this means (Chromium, Calcium and Sulfate for instance), and reverse osmosis process to purify the filtrate from precipitation process. The reverse osmosis process is used to remove dissolved chemicals (Nitrates and Chlorides). A synthetic solution with a COD of 8000 mg/l was used to simulate the treatment process. After treatment was finished, a purified stream, which represents 90 % of the intake stream have presented a COD of less then 10 mg/l, showing that this process can be utilized to minimize the impact caused to the environment. The characterization of all streams involved in the treatment process as well as the process description is presented in this paper.

Bello, S.M.G.; Mierzwa, J.C. [Cidade Universitaria, Sao Paulo (Brazil)

1995-11-01T23:59:59.000Z

486

The Time-Reversal- and Parity-Violating Nuclear Potential in Chiral Effective Theory  

E-Print Network [OSTI]

We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD theta term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and two four-quark operators. We work in the framework of two-flavor chiral perturbation theory, where a systematic expansion is possible. The different chiral-transformation properties of the sources of time-reversal violation lead to different hadronic interactions. For all sources considered the leading-order potential involves known one-pion exchange, but its specific form and the relative importance of short-range interactions depend on the source. For the theta term, the leading potential is solely given by one-pion exchange, which does not contribute to the deuteron electric dipole moment. In subleading order, a new two-pion-exchange potential is obtained. Its short-range component is indistinguishable from one of two undetermined contact interactions that appear at the s...

Maekawa, C M; de Vries, J; van Kolck, U

2011-01-01T23:59:59.000Z

487

The Time-Reversal- and Parity-Violating Nuclear Potential in Chiral Effective Theory  

E-Print Network [OSTI]

We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD theta term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and two four-quark operators. We work in the framework of two-flavor chiral perturbation theory, where a systematic expansion is possible. The different chiral-transformation properties of the sources of time-reversal violation lead to different hadronic interactions. For all sources considered the leading-order potential involves known one-pion exchange, but its specific form and the relative importance of short-range interactions depend on the source. For the theta term, the leading potential is solely given by one-pion exchange, which does not contribute to the deuteron electric dipole moment. In subleading order, a new two-pion-exchange potential is obtained. Its short-range component is indistinguishable from one of two undetermined contact interactions that appear at the same order and represent effects of heavier mesons and other short-range QCD dynamics. One-pion-exchange corrections at this order are discussed as well.

C. M. Maekawa; E. Mereghetti; J. de Vries; U. van Kolck

2011-06-30T23:59:59.000Z

488

The time-reversal- and parity-violating nuclear potential in chiral effective theory  

Science Journals Connector (OSTI)

We derive the parity- and time-reversal-violating nuclear interactions stemming from the QCD ? ¯ term and quark/gluon operators of effective dimension 6: quark electric dipole moments, quark and gluon chromo-electric dipole moments, and two four-quark operators. We work in the framework of two-flavor chiral perturbation theory, where a systematic expansion is possible. The different chiral-transformation properties of the sources of time-reversal violation lead to different hadronic interactions. For all sources considered the leading-order potential involves known one-pion exchange, but its specific form and the relative importance of short-range interactions depend on the source. For the ? ¯ term, the leading potential is solely given by one-pion exchange, which does not contribute to the deuteron electric dipole moment. In subleading order, a new two-pion-exchange potential is obtained. Its short-range component is indistinguishable from one of two undetermined contact interactions that appear at the same order and represent effects of heavier mesons and other short-range QCD dynamics. One-pion-exchange corrections at this order are discussed as well.

C.M. Maekawa; E. Mereghetti; J. de Vries; U. van Kolck

2011-01-01T23:59:59.000Z

489

The pretreatment with enhanced coagulation and a UF membrane for seawater desalination with reverse osmosis  

Science Journals Connector (OSTI)

The application of reverse osmosis (RO) for desalination process has increased rapidly with the construction of large RO plants. Although there have been considerable improvements in membrane materials and operation experience, the fouling of membranes is a significant problem up to the present. There have been many instances of fouling of RO membranes caused by the presence of iron and silica. Biomineralization is usually believed to be caused by microorganisms metabolizing at iron and silica present. Its formation process was studied and described first in the present work, then the enhanced coagulation with Fe(VI) and UF membrane treatment process for pretreatment of reverse osmosis for desalination has been investigated in a laboratory for 3–4 months. The main aim is to reduce the feed water pollution, such as turbidity, iron, silica and aglae, microbial contamination in order to control biofouling and mineralization on the membrane surface. The results showed that the biomineralization formation process is the adsorption of organism and the biosorption of inorganics onto the organic matrix. The pretreatment results show that turbidity is less than 0.5 NTU, iron concentration never exceeds 0.2 mg/l, silicon concentration must not exceed 0.1 mg/l; and the removal rate of aglae and microbial is more than 98%.

Wei Ma; Yaqian Zhao; Lu Wang

2007-01-01T23:59:59.000Z

490

Influence of interfacial disorder and temperature on magnetization reversal in exchange-coupled bilayers  

SciTech Connect (OSTI)

Polarized neutron reflectometry is used to measure the thermal response of the net-magnetization vector of polycrystalline ferromagnetic (F) Fe films exchange coupled to twinned (110) MnF{sub 2} antiferromagnetic (AF) layers. We observe a strong correlation between the temperature dependencies of the net sample magnetization perpendicular to the applied field at coercivity and exchange bias. For cooling field and measurement conditions involving magnetization reversal via rotation, we find a range of temperature dependencies. For the smoothest F-AF interface, the temperature dependence of exchange bias compares well to a S=5/2 Brillouin function -- an observation predicted by some theoretical models. This temperature dependence is expected for the sublattice magnetization and the square root of the anisotropy constant K{sub 1} of bulk MnF{sub 2}. In contrast, for a rough F-AF interface the magnetization reversal process (and exchange bias) showed little temperature dependence up to temperatures approaching the AF Neel point -- a clear consequence of increasing interfacial disorder in a F-AF epitaxial system.

Fitzsimmons, M. R.; Leighton, C.; Hoffmann, A.; Yashar, P. C.; Nogues, J.; Liu, K.; Majkrzak, C. F.; Dura, J. A.; Fritzsche, H.; Schuller, Ivan K.

2001-09-01T23:59:59.000Z

491

Development of a Rapid and Sensitive Method for the Determination of Aluminum by Reverse-Phase High-Performance Liquid Chromatography Using a Fluorescence Detector  

Science Journals Connector (OSTI)

......Aluminum in metal toxicity in mammals (1979) New York: Plenum. 104-112. 3 Craper D.R. , Krishnan S.S., Dalton A.J. Brain aluminium distribution in Alzheimer's disease and experimental neurofibrillary degeneration. Science (1973) 108:511-513......

Heena; Rajesh Kumar; Susheela Rani; Ashok Kumar Malik

2014-10-01T23:59:59.000Z

492

Reversed-Phase High-Performance Liquid Chromatographic Determination of Biochemical Changes in Free Amino Acids During Wheat Flour Mixing and Bread Baking  

Science Journals Connector (OSTI)

......AAs (Table I), a prominent increase is noticed for Orn ( + 2500...significantly. The remaining AAs increase between 50% (Gly) and 228...5. M. Kolostori. Flour quality and proteolysis. Acta Aliment...column. Derivatization of grape wine must, wines and wine vinegars......

J.A. Prieto; C. Collar; C. Benedito de Barber

1990-11-01T23:59:59.000Z

493

Final Report on Development of Optimized Field-Reversed Configuration Plasma Formation Techniques for Magnetized Target Fusion  

SciTech Connect (OSTI)

The University of New Mexico (UNM) proposed a collaboration with Los Alamos National Laboratory (LANL) to develop and test methods for improved formation of field-reversed configuration (FRC) plasmas relevant to magnetized target fusion (MTF) energy research. MTF is an innovative approach for a relatively fast and cheap path to the production of fusion energy that utilizes magnetic confinement to assist in the compression of a hot plasma to thermonuclear conditions by an external driver. LANL is currently pursing demonstration of the MTF concept via compression of an FRC plasma by a metal liner z-pinch in conjunction with the Air Force Research Laboratory in Albuquerque, NM. A key physics issue for the FRC's ultimate success as an MTF target lies in the initial pre-ionization (PI) stage. The PI plasma sets the initial conditions from which the FRC is created. In particular, the PI formation process determines the amount of magnetic flux that can be trapped to form the FRC. A ringing theta pinch ionization (RTPI) technique, such as currently used by the FRX-L device at LANL, has the advantages of high ionization fraction, simplicity (since no additional coils are required), and does not require internal electrodes which can introduce impurities into the plasma. However RTPI has been shown to only trap #24;50% of the initial bias flux at best and imposes additional engineering constraints on the capacitor banks. The amount of trapped flux plays an important role in the FRC's final equilibrium, transport, and stability properties, and provides increased ohmic heating of the FRC through induced currents as the magnetic field decays. Increasing the trapped flux also provides the route to greatest potential gains in FRC lifetime, which is essential to provide enough time to translate and compress the FRC effectively. In conjunction with LANL we initially planned to develop and test a microwave break- down system to improve the initial PI plasma formation. The UNM team would design the microwave optics and oversee the fabrication and assembly of all components and assist with integration into the FRX-L machine control system. LANL would provide a preexisting 65 kW X-band microwave source and some associated waveguide hardware. Once constructed and installed, UNM would take the lead in operating the microwave breakdown system and conducting studies to optimize its use in FRC PI formation in close cooperation with the needs of the LANL MTF team. In conjunction with our LANL collaborators, we decided after starting the project to switch from a microwave plasma breakdown approach to a plasma gun technology to use for enhanced plasma formation in the FRX-L field-reversed configuration experiment at LANL. Plasma guns would be able to provide significantly higher density plasma with greater control over its distribution in time and space within the experiment. This would allow greater control and #12;ne-tuning of the PI plasma formed in the experiment. Multiple plasma guns would be employed to fill a Pyrex glass test chamber (built at UNM) with plasma which would then be characterized and optimized for the MTF effort.

Lynn, Alan

2013-11-01T23:59:59.000Z

494

Resin-assisted enrichment of thios as a general strategy for proteomic profiling of cysteine-based reversible modifications  

SciTech Connect (OSTI)

Reversible modifications on cysteine thiols play a significant role in redox signaling and regulation. A number of reversible redox modifications, including disulfide formation, S-nitrosylation, and S-glutathionylation, have been recognized for their significance in various physiological and pathological processes. Here we describe in detail a resin-assisted thiol-affinity enrichment protocol for both biochemical and proteomics applications. This protocol serves as a general approach for specific isolation of thiol-containing proteins or peptides derived from reversible redox-modified proteins. This approach utilizes thiol-affinity resins to directly capture thiol-containing proteins or peptides through a disulfide exchange reaction followed by on-resin protein digestion and on-resin multiplexed isobaric labeling to facilitate LC?MS/MS based quantitative site-specific analysis of redox modifications. The overall approach requires a much simpler workflow with increased specificity compared to the commonly used biotin switch technique. By coupling different selective reduction strategies, the resin-assisted approach provides the researcher with a useful tool capable of enriching different types of reversible modifications on protein thiols. Procedures for selective enrichment and analyses of S-nitrosylation and total reversible cysteine oxidation are presented to demonstrate the utility of this general strategy.

Guo, Jia; Gaffrey, Matthew J.; Su, Dian; Liu, Tao; Camp, David G.; Smith, Richard D.; Qian, Weijun

2014-01-01T23:59:59.000Z

495

Analysis of system performance losses due to the reversing valve for a heat pump using R-410a  

SciTech Connect (OSTI)

A traditional reversing valve enables a heat pump to operate in the heating mode or cooling mode by switching the refrigerant flow path through the indoor and outdoor coils, thereby changing the functions of the two heat exchangers. However, the presence of a reversing valve causes additional pressure drops and undesired heat exchange. The objective of this research was to measure the overall effects of a reversing valve on a 3-ton heat pump system using R-401a and make comparisons to the same valve's performance with R-22 as the refrigerant. The experiments included tests of under- and over-sized valves at the same test conditions. Also, the effects of pressure drops and of heat transfer combined with mass leakage on system and compressor performance were analyzed. It was found that the use of a larger (oversized) reversing valve to reduce pressure drops provided only limited performance gains. Also, changing refrigerant from R-22 to R-410a resulted in an increase in mass leakage but did not significantly change the effect that the reversing valve had on the system COP.

Fang, W.; Nutter, D.W.

1999-07-01T23:59:59.000Z

496

Three-phase model for the reversible lithiation/delithiation of SnO anodes in Li-ion batteries  

E-Print Network [OSTI]

Using first-principles calculations, we propose a microscopic model to explain the reversible lithiation/delithiation of tin-oxide anodes in lithium-ion batteries. When the irreversible regime ends, the anode grains consist of layers of Li-oxide separated by Sn bilayers. During the following reversible lithiation, the Li-oxide undergoes two phase transformations that give rise to a Li-enrichment of the oxide and the formation of a SnLi composite. The anode grain structure stays layered and ordered with an effective theoretical reversible capacity of 4.5 Li per Sn atom. The predicted anode volume expansion and voltage profile agree well with experiments, contrary to existing models.

Pedersen, Andreas; Luisier, Mathieu

2015-01-01T23:59:59.000Z

497

Carbon dioxide hydrogenation to form methanol via a reverse-water-gas-shift reaction (the CAMERE process)  

SciTech Connect (OSTI)

The CAMERE process (carbon dioxide hydrogenation to form methanol via a reverse-water-gas-shift reaction) was developed and evaluated. The reverse-water-gas-shift reactor and the methanol synthesis reactor were serially aligned to form methanol from CO{sub 2} hydrogenation. Carbon dioxide was converted to CO and water by the reverse-water-gas-shift reaction (RWReaction) to remove water before methanol was synthesized. With the elimination of water by RWReaction, the purge gas volume was minimized as the recycle gas volume decreased. Because of the minimum purge gas loss by the pretreatment of RWReactor, the overall methanol yield increased up to 89% from 69%. An active and stable catalyst with the composition of Cu/ZnO/ZrO{sub 2}/Ga{sub 2}O{sub 3} (5:3:1:1) was developed. The system was optimized and compared with the commercial methanol synthesis processes from natural gas and coal.

Joo, O.S.; Jung, K.D.; Han, S.H.; Uhm, S.J. [Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Catalysis Lab.] [Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Catalysis Lab.; Moon, I. [Yonsei Univ., Seoul (Korea, Republic of). Dept. of Chemical Engineering] [Yonsei Univ., Seoul (Korea, Republic of). Dept. of Chemical Engineering; Rozovskii, A.Y.; Lin, G.I. [A.V. Topchiev Inst. of Petrochemical Synthesis, Moscow (Russian Federation)] [A.V. Topchiev Inst. of Petrochemical Synthesis, Moscow (Russian Federation)

1999-05-01T23:59:59.000Z

498

PCBs as environmental estrogens: Turtle sex determination as a biomarker of environmental contamination  

SciTech Connect (OSTI)

Polychlorinated biphenyls (PCBs) are widespread, low-level environmental pollutants associated with adverse health effects such as immune suppression and teratogenicity. There is increasing evidence that some PCB compounds are capable of disrupting reproductive and endocrine function in fish, birds, and mammals, including humans, particularly during development. Research on the mechanism through which these compounds act to alter reproductive function indicates estrogenic activity, whereby the compounds may be altering sexual differentiation. Here we demonstrate the estrogenic effect of some PCBs by reversing gonadal sex in a reptile species that exhibits temperature-dependent sex determination. 17 refs., 1 fig., 1 tab.

Bergeron, J.M.; Crews, D. (Univ. of Texas, Austin, TX (United States)); McLachlan, J.A. (National Institute of Environmental Health Sciences, Research Triangle Park, NC (United States))

1994-09-01T23:59:59.000Z

499

Apparatus and method for controlling the rotary airlocks in a coal processing system by reversing the motor current rotating the air lock  

DOE Patents [OSTI]

An improvement to a coal processing system where hard materials found in the coal may cause jamming of either inflow or outflow rotary airlocks, each driven by a reversible motor. The instantaneous current used by the motor is continually monitored and compared to a predetermined value. If an overcurrent condition occurs, indicating a jamming of the airlock, a controller means starts a "soft" reverse rotation of the motor thereby clearing the jamming. Three patterns of the motor reversal are provided.

Groombridge, Clifton E. (Hardin, MT)

1996-01-01T23:59:59.000Z

500

A new high performance field reversed configuration operating regime in the C-2 device  

SciTech Connect (OSTI)

Large field reversed configurations (FRCs) are produced in the C-2 device by combining dynamic formation and merging processes. The good confinement of these FRCs must be further improved to achieve sustainment with neutral beam (NB) injection and pellet fuelling. A plasma gun is installed at one end of the C-2 device to attempt electric field control of the FRC edge layer. The gun inward radial electric field counters the usual FRC spin-up and mitigates the n = 2 rotational instability without applying quadrupole magnetic fields. Better plasma centering is also obtained, presumably from line-tying to the gun electrodes. The combined effects of the plasma gun and of neutral beam injection lead to the high performance FRC operating regime, with FRC lifetimes up to 3 ms and with FRC confinement times improved by factors 2 to 4.

Tuszewski, M.; Smirnov, A.; Thompson, M. C.; Barnes, D.; Binderbauer, M. W.; Brown, R.; Bui, D. Q.; Clary, R.; Conroy, K. D.; Deng, B. H.; Dettrick, S. A.; Douglass, J. D.; Garate, E.; Glass, F. J.; Gota, H.; Guo, H.Y.; Gupta, D.; Gupta, S.; Kinley, J. S.; Knapp, K. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, California 92688 (United States); and others

2012-05-15T23:59:59.000Z