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Note: This page contains sample records for the topic "room temperature ionic" 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

Computer Simulation of a "Green Chemistry" Room-Temperature Ionic Solvent C. J. Margulis, H. A. Stern, and B. J. Berne*  

E-Print Network [OSTI]

Computer Simulation of a "Green Chemistry" Room-Temperature Ionic Solvent C. J. Margulis, H. A, room-temperature ionic liquids are currently being investigated as alternative solvents in industry that is clean, recyclable, and a good solvent for both organic and inorganic compounds is appealing

Berne, Bruce J.

2

Metal-air cell comprising an electrolyte with a room temperature ionic liquid and hygroscopic additive  

DOE Patents [OSTI]

An electrochemical cell comprising an electrolyte comprising water and a hydrophobic ionic liquid comprising positive ions and negative ions. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. A hydrophilic or hygroscopic additive modulates the hydrophobicity of the ionic liquid to maintain a concentration of the water in the electrolyte is between 0.001 mol % and 25 mol %.

Friesen, Cody A.; Krishnan, Ramkumar; Tang, Toni; Wolfe, Derek

2014-08-19T23:59:59.000Z

3

Theinfluence of a hierarchical porous carbon network on the coherent dynamics of a nanoconfined room temperature ionic liquid: A neutron spin echo and atomistic simulation investigation  

SciTech Connect (OSTI)

The molecular-scale dynamic properties of the room temperature ionic liquid (RTIL) 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, or [C4mim+ ][Tf2N ], confined in hierarchical microporous mesoporous carbon, were investigated using neutron spin echo (NSE) and molecular dynamics (MD) simulations. Both NSE and MD reveal pronounced slowing of the overall collective dynamics, including the presence of an immobilized fraction of RTIL at the pore wall, on the time scales of these approaches. A fraction of the dynamics, corresponding to RTIL inside 0.75 nm micropores located along the mesopore surfaces, are faster than those of RTIL in direct contact with the walls of 5.8 nm and 7.8 nm cylindrical mesopores. This behavior is ascribed to the near-surface confined-ion density fluctuations resulting from the ion ion and ion wall interactions between the micropores and mesopores as well as their confinement geometries. Strong micropore RTIL interactions result in less-coordinated RTIL within the micropores than in the bulk fluid. Increasing temperature from 296 K to 353 K reduces the immobilized RTIL fraction and results in nearly an order of magnitude increase in the RTIL dynamics. The observed interfacial phenomena underscore the importance of tailoring the surface properties of porous carbons to achieve desirable electrolyte dynamic behavior, since this impacts the performance in applications such as electrical energy storage devices.

Banuelos, Jose Leo [ORNL; Feng, Guang [ORNL; Fulvio, Pasquale F [ORNL; Li, Song [Vanderbilt University, Nashville; Rother, Gernot [ORNL; Arend, Nikolas [ORNL; Faraone, Antonio [National Institute of Standards and Technology (NIST); Dai, Sheng [ORNL; Cummings, Peter T [ORNL; Wesolowski, David J [ORNL

2014-01-01T23:59:59.000Z

4

Polarization versus Temperature in Pyridinium Ionic Liquids  

E-Print Network [OSTI]

Electronic polarization and charge transfer effects play a crucial role in thermodynamic, structural and transport properties of room-temperature ionic liquids (RTILs). These non-additive interactions constitute a useful tool for tuning physical chemical behavior of RTILs. Polarization and charge transfer generally decay as temperature increases, although their presence should be expected over an entire condensed state temperature range. For the first time, we use three popular pyridinium-based RTILs to investigate temperature dependence of electronic polarization in RTILs. Atom-centered density matrix propagation molecular dynamics, supplemented by a weak coupling to an external bath, is used to simulate the temperature impact on system properties. We show that, quite surprisingly, non-additivity in the cation-anion interactions changes negligibly between 300 and 900 K, while the average dipole moment increases due to thermal fluctuations of geometries. Our results contribute to the fundamental understanding...

Chaban, Vitaly V

2014-01-01T23:59:59.000Z

5

Novel room temperature ferromagnetic semiconductors  

SciTech Connect (OSTI)

Today's information world, bits of data are processed by semiconductor chips, and stored in the magnetic disk drives. But tomorrow's information technology may see magnetism (spin) and semiconductivity (charge) combined in one 'spintronic' device that exploits both charge and 'spin' to carry data (the best of two worlds). Spintronic devices such as spin valve transistors, spin light emitting diodes, non-volatile memory, logic devices, optical isolators and ultra-fast optical switches are some of the areas of interest for introducing the ferromagnetic properties at room temperature in a semiconductor to make it multifunctional. The potential advantages of such spintronic devices will be higher speed, greater efficiency, and better stability at a reduced power consumption. This Thesis contains two main topics: In-depth understanding of magnetism in Mn doped ZnO, and our search and identification of at least six new above room temperature ferromagnetic semiconductors. Both complex doped ZnO based new materials, as well as a number of nonoxides like phosphides, and sulfides suitably doped with Mn or Cu are shown to give rise to ferromagnetism above room temperature. Some of the highlights of this work are discovery of room temperature ferromagnetism in: (1) ZnO:Mn (paper in Nature Materials, Oct issue, 2003); (2) ZnO doped with Cu (containing no magnetic elements in it); (3) GaP doped with Cu (again containing no magnetic elements in it); (4) Enhancement of Magnetization by Cu co-doping in ZnO:Mn; (5) CdS doped with Mn, and a few others not reported in this thesis. We discuss in detail the first observation of ferromagnetism above room temperature in the form of powder, bulk pellets, in 2-3 mu-m thick transparent pulsed laser deposited films of the Mn (<4 at. percent) doped ZnO. High-resolution transmission electron microscopy (HRTEM) and electron energy loss spectroscopy (EELS) spectra recorded from 2 to 200nm areas showed homogeneous distribution of Mn substituting for Zn a 2+ state in the ZnO lattice. Ferromagnetic Resonance (FMR) technique is used to confirm the existence of ferromagnetic ordering at temperatures as high as 425K. The ab initio calculations were found to be consistent with the observation of ferromagnetism arising from fully polarized Mn 2+ state. The key to observed room temperature ferromagnetism in this system is the low temperature processing, which prevents formation of clusters, secondary phases and the host ZnO from becoming n-type. The electronic structure of the same Mn doped ZnO thin films studied using XAS, XES and RIXS, revealed a strong hybridization between Mn 3d and O 2p states, which is an important characteristic of a Dilute magnetic Semiconductor (DMS). It is shown that the various processing conditions like sintering temperature, dopant concentration and the properties of precursors used for making of DMS have a great influence on the final properties. Use of various experimental techniques to verify the physical properties, and to understand the mechanism involved to give rise to ferromagnetism is presented. Methods to improve the magnetic moment in Mn doped ZnO are also described. New promising DMS materials (such as Cu doped ZnO are explored). The demonstrated new capability to fabricate powder, pellets, and thin films of room temperature ferromagnetic semiconductors thus makes possible the realization of a wide range of complex elements for a variety of new multifunctional phenomena related to Spintronic devices as well as magneto-optic components.

Gupta, Amita

2004-11-01T23:59:59.000Z

6

Low Temperature Reduction of Alumina Using Fluorine Containing Ionic Liquids  

SciTech Connect (OSTI)

The major objective of the project is to establish the feasibility of using specific ionic liquids capable of sustaining aluminum electrolysis near room temperature at laboratory and batch recirculation scales. It will explore new technologies for aluminum and other valuable metal extraction and process methods. The new technology will overcome many of the limitations associated with high temperatures processes such as high energy consumption and corrosion attack. Furthermore, ionic liquids are non-toxic and could be recycled after purification, thus minimizing extraction reagent losses and environmental pollutant emissions. Ionic liquids are mixture of inorganic and organic salts which are liquid at room temperature and have wide operational temperature range. During the last several years, they were emerging as novel electrolytes for extracting and refining of aluminum metals and/or alloys, which are otherwise impossible using aqueous media. The superior high temperature characteristics and high solvating capabilities of ionic liquids provide a unique solution to high temperature organic solvent problems associated with device internal pressure build-up, corrosion, and thermal stability. However their applications have not yet been fully implemented due to the insufficient understanding of the electrochemical mechanisms involved in processing of aluminum with ionic liquids. Laboratory aluminum electrodeposition in ionic liquids has been investigated in chloride and bis (trifluoromethylsulfonyl) imide based ionic liquids. The electrowinning process yielded current density in the range of 200-500 A/m2, and current efficiency of about 90%. The results indicated that high purity aluminum (>99.99%) can be obtained as cathodic deposits. Cyclic voltammetry and chronoamperometry studies have shown that initial stages of aluminum electrodeposition in ionic liquid electrolyte at 30°C was found to be quasi-reversible, with the charge transfer coefficient (0.40). Nucleation phenomena involved in aluminum deposition on copper in AlCl3-BMIMCl electrolyte was found to be instantaneous followed by diffusion controlled three-dimensional growth of nuclei. Diffusion coefficient (Do) of the electroactive species Al2Cl7¯ ion was in the range from 6.5 to 3.9×10–7 cm2?s–1 at a temperature of 30°C. Relatively little research efforts have been made toward the fundamental understanding and modeling of the species transport and transformation information involved in ionic liquid mixtures, which eventually could lead to quantification of electrochemical properties. Except that experimental work in this aspect usually is time consuming and expensive, certain characteristics of ionic liquids also made barriers for such analyses. Low vapor pressure and high viscosity make them not suitable for atomic absorption spectroscopic measurement. In addition, aluminum electrodeposition in ionic liquid electrolytes are considered to be governed by multi-component mass, heat and charge transport in laminar and turbulent flows that are often multi-phase due to the gas evolution at the electrodes. The kinetics of the electrochemical reactions is in general complex. Furthermore, the mass transfer boundary layer is about one order of magnitude smaller than the thermal and hydrodynamic boundary layer (Re=10,000). Other phenomena that frequently occur are side reactions and temperature or concentration driven natural convection. As a result of this complexity, quantitative knowledge of the local parameters (current densities, ion concentrations, electrical potential, temperature, etc.) is very difficult to obtain. This situation is a serious obstacle for improving the quality of products, efficiency of manufacturing and energy consumption. The gap between laboratory/batch scale processing with global process control and nanoscale deposit surface and materials specifications needs to be bridged. A breakthrough can only be realized if on each scale the occurring phenomena are understood and quantified. Multiscale numerical modeling nevertheless can help t

Dr. R. G. Reddy

2007-09-01T23:59:59.000Z

7

Metal-air low temperature ionic liquid cell  

DOE Patents [OSTI]

The present application relates to an electrochemical metal-air cell in which a low temperature ionic liquid is used.

Friesen, Cody A; Buttry, Daniel A

2014-11-25T23:59:59.000Z

8

Determining Camera Gain in Room Temperature Cameras  

SciTech Connect (OSTI)

James R. Janesick provides a method for determining the amplification of a CCD or CMOS camera when only access to the raw images is provided. However, the equation that is provided ignores the contribution of dark current. For CCD or CMOS cameras that are cooled well below room temperature, this is not a problem, however, the technique needs adjustment for use with room temperature cameras. This article describes the adjustment made to the equation, and a test of this method.

Joshua Cogliati

2010-12-01T23:59:59.000Z

9

Absorber Materials at Room and Cryogenic Temperatures  

SciTech Connect (OSTI)

We recently reported on investigations of RF absorber materials at cryogenic temperatures conducted at Jefferson Laboratory (JLab). The work was initiated to find a replacement material for the 2 Kelvin low power waveguide Higher Order Mode (HOM) absorbers employed within the original cavity cryomodules of the Continuous Electron Beam Accelerator Facility (CEBAF). This effort eventually led to suitable candidates as reported in this paper. Furthermore, though constrained by small funds for labor and resources, we have analyzed a variety of lossy ceramic materials, several of which could be usable as HOM absorbers for both normal conducting and superconducting RF structures, e.g. as loads in cavity waveguides and beam tubes either at room or cryogenic temperatures and, depending on cooling measures, low to high operational power levels.

F. Marhauser, T.S. Elliott, A.T. Wu, E.P. Chojnacki, E. Savrun

2011-09-01T23:59:59.000Z

10

Electrodrift purification of materials for room temperature radiation detectors  

DOE Patents [OSTI]

A method of purifying nonmetallic, crystalline semiconducting materials useful for room temperature radiation detecting devices by applying an electric field across the material is disclosed. The present invention discloses a simple technology for producing purified ionic semiconducting materials, in particular PbI{sub 2} and preferably HgI{sub 2}, which produces high yields of purified product, requires minimal handling of the material thereby reducing the possibility of introducing or reintroducing impurities into the material, is easy to control, is highly selective for impurities, retains the stoichiometry of the material and employs neither high temperatures nor hazardous materials such as solvents or liquid metals. An electric field is applied to a bulk sample of the material causing impurities present in the sample to drift in a preferred direction. After all of the impurities have been transported to the ends of the sample the current flowing through the sample, a measure of the rate of transport of mobile impurities, falls to a low, steady state value, at which time the end sections of the sample where the impurities have concentrated are removed leaving a bulk sample of higher purity material. Because the method disclosed here only acts on the electrically active impurities, the stoichiometry of the host material remains substantially unaffected. 4 figs.

James, R.B.; Van Scyoc, J.M. III; Schlesinger, T.E.

1997-06-24T23:59:59.000Z

11

Electrodrift purification of materials for room temperature radiation detectors  

DOE Patents [OSTI]

A method of purifying nonmetallic, crystalline semiconducting materials useful for room temperature radiation detecting devices by applying an electric field across the material. The present invention discloses a simple technology for producing purified ionic semiconducting materials, in particular PbI.sub.2 and preferably HgI.sub.2, which produces high yields of purified product, requires minimal handling of the material thereby reducing the possibility of introducing or reintroducing impurities into the material, is easy to control, is highly selective for impurities, retains the stoichiometry of the material and employs neither high temperatures nor hazardous materials such as solvents or liquid metals. An electric field is applied to a bulk sample of the material causing impurities present in the sample to drift in a preferred direction. After all of the impurities have been transported to the ends of the sample the current flowing through the sample, a measure of the rate of transport of mobile impurities, falls to a low, steady state value, at which time the end sections of the sample where the impurities have concentrated are removed leaving a bulk sample of higher purity material. Because the method disclosed here only acts on the electrically active impurities, the stoichiometry of the host material remains substantially unaffected.

James, Ralph B. (5420 Lenore Ave., Livermore, Alameda County, CA 94550); Van Scyoc, III, John M. (P.O. Box 93, 65 Main St., Apt. 1, Plainfield, Cumberland County, PA 17081); Schlesinger, Tuviah E. (8 Carleton Dr., Mt. Lebanon, Allegheny County, PA 15243)

1997-06-24T23:59:59.000Z

12

Room-temperature macromolecular serial crystallography using synchrotron radiation  

Science Journals Connector (OSTI)

The room-temperature structure of lysozyme is determined using 40000 individual diffraction patterns from micro-crystals flowing in liquid suspension across a synchrotron microfocus beamline.

Stellato, F.

2014-05-30T23:59:59.000Z

13

Carbon promoted water electrolysis to produce hydrogen at room temperature.  

E-Print Network [OSTI]

??The objective of the work was to conduct water electrolysis at room temperature with reduced energy costs for hydrogen production. The electrochemical gasification of carbons… (more)

Ranganathan, Sukanya.

2007-01-01T23:59:59.000Z

14

Determination of the Acceptable Room Temperature Range for Local Cooling  

E-Print Network [OSTI]

Determination of the acceptable room temperature range is a key problem in satisfactory design of local cooling for energy savings. At the room temperatures ranging from neutral to warm, three sensitive body parts-the face, chest and back-were each...

Zhang, Y.; Zhao, R.

2006-01-01T23:59:59.000Z

15

Matchstick: a room-to-room thermal model for predicting indoor temperature from wireless sensor data  

Science Journals Connector (OSTI)

In this paper we present a room-to-room thermal model used to accurately predict temperatures in residential buildings. We evaluate the accuracy of this model with ground truth data from four occupied family homes (two in the UK and two in the US). The ... Keywords: forced air, home automation, prediction, radiators, thermal modelling, underfloor heating

Carl Ellis; Mike Hazas; James Scott

2013-04-01T23:59:59.000Z

16

Microscopic Transport in Mixtures of Room Temperature Ionic Liquids...  

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

andor storage of carbon dioxide. For these applications in addition to CO 2 sorption properties, also transport properties of the mixtures of CO 2 and ILs are of high...

17

Quantitative room-temperature mineralization of airborne formaldehyde using  

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

Quantitative room-temperature mineralization of airborne formaldehyde using Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Title Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts Publication Type Journal Article Year of Publication 2011 Authors Sidheswaran, Meera A., Hugo Destaillats, Douglas P. Sullivan, Joern Larsen, and William J. Fisk Journal Applied Catalysis B - Environmental Issue 107 Pagination 34-41 Date Published 2011 Keywords commercial building ventilation & indoor environmental quality group, commercial building ventilation and indoor environmental quality group, energy analysis and environmental impacts department, indoor environment department, indoor environment group DOI 10.1016/j.apcatb.2011.06.032 Attachment Size

18

Single-Molecule Triplet-State Photon Antibunching at Room Temperature...  

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

Molecule Triplet-State Photon Antibunching at Room Temperature. Single-Molecule Triplet-State Photon Antibunching at Room Temperature. Abstract: We have demonstrated probing...

19

The Influence of Operating Modes, Room Temperature Set Point and Curtain Styles on Energy Consumption of Room Air Conditioner  

E-Print Network [OSTI]

A field investigation was carried out in an office building of Changsha city in winter and summer, the influence of different running modes, curtain styles and room temperature set point on energy consumption of room air conditioner (RAC...

Yu, J.; Yang, C.; Guo, R.; Wu, D.; Chen, H.

2006-01-01T23:59:59.000Z

20

Large Electrocaloric Effect in Ferroelectric Polymers Near Room Temperature  

Science Journals Connector (OSTI)

...VDF-TrFE-chlorofluoroethylene) [P(VDF-TrFE-CFE)] at near room temperature around...copolymerization with a bulky monomer such as CFE or CTFE (chlorotrifluoroethylene) to form...dielectric constant of P(VDF-TrFE-CFE) 59.2/33.6/7.2 mol % terpolymer...

Bret Neese; Baojin Chu; Sheng-Guo Lu; Yong Wang; E. Furman; Q. M. Zhang

2008-08-08T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Pysico-chemical properties of hydrophobic ionic liquids containing 1-octylpyridinium, 1-octyl-2-methylpyridinium or 1-octyl-4-methylpyridinium cations  

E-Print Network [OSTI]

Ionic liquids as green solvents: progress and prospects,in ionic liquid solvents. Green Chem. 2004, 6, 245-249. Xu,solvent structural variations on the mechanism of facilitated ion transfer into room-temperature ionic liquids. Green

Papaiconomou, Nicolas; Salminen, Justin; Lee, Jong-Min; Prausnitz, John M.

2006-01-01T23:59:59.000Z

22

Room-temperature magnetoelectric multiferroic thin films and applications thereof  

DOE Patents [OSTI]

The invention provides a novel class of room-temperature, single-phase, magnetoelectric multiferroic (PbFe.sub.0.67W.sub.0.33O.sub.3).sub.x (PbZr.sub.0.53Ti.sub.0.47O.sub.3).sub.1-x (0.2.ltoreq.x.ltoreq.0.8) (PFW.sub.x-PZT.sub.1-x) thin films that exhibit high dielectric constants, high polarization, weak saturation magnetization, broad dielectric temperature peak, high-frequency dispersion, low dielectric loss and low leakage current. These properties render them to be suitable candidates for room-temperature multiferroic devices. Methods of preparation are also provided.

Katiyar, Ram S; Kuman, Ashok; Scott, James F.

2014-08-12T23:59:59.000Z

23

High Temperature/Low Humidity Polymer Electrolytes Derived from Ionic Liquids  

Broader source: Energy.gov [DOE]

Presentation on High Temperature/Low Humidity Polymer Electrolytes Derived from Ionic Liquids to the High Temperature Membrane Working Group Meeting held in Arlington, Virginia, May 26,2005.

24

Room-temperature Formation of Hollow Cu2O Nanoparticles  

SciTech Connect (OSTI)

Monodisperse Cu and Cu2O nanoparticles (NPs) are synthesized using tetradecylphosphonic acid as a capping agent. Dispersing the NPs in chloroform and hexane at room temperature results in the formation of hollow Cu2O NPs and Cu@Cu2O core/shell NPs, respectively. The monodisperse Cu2O NPs are used to fabricate hybrid solar cells with efficiency of 0.14percent under AM 1.5 and 1 Sun illumination.

Hung, Ling-I; Tsung, Chia-Kuang; Huang, Wenyu; Yang, Peidong

2010-01-18T23:59:59.000Z

25

Phosphonium-based ionic liquids and uses  

DOE Patents [OSTI]

Phosphonium-based room temperature ionic liquids ("RTILs") were prepared. They were used as matrices for Matrix-Assisted Laser Desorption Ionization (MALDI) mass spectrometry and also for preparing samples of dyes for analysis.

Del Sesto, Rico E; Koppisch, Andrew T; Lovejoy, Katherine S; Purdy, Geraldine M

2014-12-30T23:59:59.000Z

26

Room temperature ferromagnetism in a phthalocyanine based carbon material  

SciTech Connect (OSTI)

We report on a simple method to fabricate a magnetic carbon material that contains nitrogen-coordinated transition metals and has a large magnetic moment. Highly chlorinated iron phthalocyanine was used as building blocks and potassium as a coupling reagent to uniformly disperse nitrogen-coordinated iron atoms on the phthalocyanine based carbon material. The iron phthalocyanine based carbon material exhibits ferromagnetic properties at room temperature and the ferromagnetic phase transition occurs at T{sub c}?=?490?±?10?K. Transmission electron microscopy observation, X-ray diffraction analysis, and the temperature dependence of magnetization suggest that the phthalocyanine molecules form three-dimensional random networks in the iron phthalocyanine based carbon material.

Honda, Z., E-mail: honda@fms.saitama-u.ac.jp; Sato, K.; Sakai, M.; Fukuda, T.; Kamata, N. [Graduate School of Science and Engineering, Saitama University, 255 Shimo-Okubo, Sakura-ku, Saitama 338-8570 (Japan); Hagiwara, M.; Kida, T. [KYOKUGEN (Center for Quantum Science and Technology under Extreme Conditions), Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan)

2014-02-07T23:59:59.000Z

27

Room-Temperature Synthesis Leading to Nanocrystalline Frederic Sauvage,  

E-Print Network [OSTI]

.; Laffont, L.; Leriche, J.-B.; Masquelier, C. Solid State Ionics 2006, 177, 333­341. (3) Sauvage, F.; Baudrin, E.; Gengembre, L.; Tarascon, J.-M. Solid State Ionics 2005, 176, 1869­1876. (4) Drezen, T.; Kwon. Introduction The need for energy storage gave rise to the lithium-ion battery, while the effort given

Poeppelmeier, Kenneth R.

28

Low cycle fatigue behavior of Zircaloy-2 at room temperature  

Science Journals Connector (OSTI)

Abstract Fuel cladding and pressure tubes of Zircaloy-2 in pressurized light and heavy water nuclear reactors experience plastic strain cycles due to power fluctuations in the reactor, such strain cycles cause low cycle fatigue (LCF) and could be life limiting factor for them. Factors like strain rate, strain amplitude and temperature are known to have marked influence on LCF behavior. The effect of strain rate from 10?2 to 10?4 s?1 on LCF behavior of Zircaloy-2 was studied, at different strain amplitudes between ±0.50% and ±1.25% at room temperature. Fatigue life was decreased with lowering of strain rate from 10?2 to 10?4 s?1 at all the strain amplitudes studied. While there was cyclic softening at lower strain amplitudes (??t/2 ? ±0.60%) cyclic hardening was exhibited at higher strain amplitudes (??t/2 ? ±1.00%) at all the strain rates. Further, there was secondary cyclic hardening during the later stage of cycling at all the strain amplitudes and the strain rates. Cyclic stress–strain hysteresis loops at the lowest strain rate of 10?4 s?1 were found to be heavily serrated, resulting from dynamic strain aging (DSA). There was significant effect of strain rate on dislocation substructure. The results are discussed in terms of high concentration of point defects generated during cyclic straining and their role in enhancing interaction between solutes and dislocations.

G. Sudhakar Rao; J.K. Chakravartty; Saibaba Nudurupati; G.S. Mahobia; Kausik Chattopadhyay; N.C. Santhi Srinivas; Vakil Singh

2013-01-01T23:59:59.000Z

29

Hydrogen production via carbon-assisted water electrolysis at room temperature.  

E-Print Network [OSTI]

??The objective of the work was to conduct carbon-assisted water electrolysis at room temperature with reduced energy costs for hydrogen production and to improve upon… (more)

Bollineni, Shilpa

2008-01-01T23:59:59.000Z

30

14 MHz rate photon counting with room temperature InGaAs/InP avalanche photodiodes  

E-Print Network [OSTI]

14 MHz rate photon counting with room temperature InGaAs/InP avalanche photodiodes PAUL L. VOSS based on InGaAs/InP avalanche photodiodes for use at 1.55 mm wavelength. Operation at room temperature at the above wavelengths for conventional high light-level measurements with PIN or ava- lanche photodiodes

Köprülü, Kahraman Güçlü

31

Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110...  

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

Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals using Ion Implantation. Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals using Ion...

32

Room Temperature Aryl Trifluoromethylation via Copper- Mediated Oxidative Cross-Coupling  

E-Print Network [OSTI]

A method for the room temperature copper-mediated trifluoromethylation of aryl and heteroaryl boronic acids has been developed. This protocol is amenable to normal benchtop setup and reactions typically require only 1?4 ...

Buchwald, Stephen Leffler

33

Optical gain and lasing from band-engineered Ge-on-Si at room temperature  

E-Print Network [OSTI]

We present theoretical modeling and experimental results of optical gain and lasing from tensile-strained, n[superscript +] Ge-on-Si at room temperature. Compatible with silicon CMOS, these devices are ideal for large-scale ...

Liu, Jifeng

34

Energy Savings in Buildings Using Air Movement and Allowing Floating Temperature in Rooms  

E-Print Network [OSTI]

on and off at the proper times, the intelligent controller calculated temperature limits using a mathematical procedure that determined the percentage of people who would be comfortable in rooms of the building. Simulations showed the annual cost savings...

Spain, S.

1985-01-01T23:59:59.000Z

35

Room location (design) in accordance with the sol-air temperature and solar heat gain  

E-Print Network [OSTI]

ROOM LOCATION (DESIGN) IN ACCORDANCE WITH THE SOL-AIR TEMPERATURE AND SOLAR HEAT GAIN A Thesis GARY LYNN PORTER Submitted to the Graduate College of Texas ASM University in parital fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1977 Major Subject: Meteorology ROOM LOCATION (DESIGN) IN ACCORDANCE WITH THE SOL-AIR TEMPERATURE AND SOLAR HEAT GAIN A Thesis by GARY LYNN PORTER Approved as to style and content by: hairman of Committee) (Head of Department) ( (Q...

Porter, Gary Lynn

1977-01-01T23:59:59.000Z

36

Temperature-induced neutral-ionic transition in tetramethylbenzidine-tetracyanoquinodimethane (TMB-TCNQ)  

Science Journals Connector (OSTI)

Experimental evidence is presented that indicates the occurrence of a temperature-induced neutral-ionic transition occurring at Tc?205 K in the mixed-stack organic charge-transfer crystal, 3,3’,5,5’-tetramethylbenzidine-7,7,8,8-tetracyanoquinodimethane (TMB-TCNQ). The transition is characterized by a large first-order-like jump in the magnetic susceptibility and a dimeric distortion of the stacks similar to those observed in tetrathiafulvalene-chloranil (TTF-CA). However, contrary to the case in TTF-CA the molecular ionicity jump at Tc is comparatively small in TMB-TCNQ. The nature of this transition observed in TMB-TCNQ is discussed drawing comparisons with that seen in TTF-CA.

Y. Iwasa; T. Koda; Y. Tokura; A. Kobayashi; N. Iwasawa; G. Saito

1990-08-01T23:59:59.000Z

37

Room-temperature observations of the weak localization in low-mobility graphene films  

SciTech Connect (OSTI)

We report room-temperature observations of the quantum conductance corrections caused by the weak localization in graphene films synthesized using solid-state-source chemical vapor deposition. Both Raman spectroscopy and Hall measurements showed strong disorder in the samples with a low mobility of ?430 cm{sup 2}/V s. The emergence of weak localization at room temperature arises from the competition between the valley-dependent scattering and the thermal dephasing in such low-quality samples, although quantum effects normally appear in the samples that have an ideal structure at cryogenic temperatures. The large disorder in our low-mobility samples unexpectedly preserved the quantum mechanical weak localization.

Han, Junhao; Wang, Shanyue; Qian, Di; Song, Fengqi, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Wang, Baigeng, E-mail: songfengqi@nju.edu.cn, E-mail: bgwang@nju.edu.cn; Han, Min; Zhou, Jianfeng [National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China); Wang, Xinran; Wang, Xuefeng [School of Electrical and Electronic Engineering, Nanjing University, Nanjing 210093 (China)

2013-12-07T23:59:59.000Z

38

Epitaxy of Nanocrystalline Silicon Carbide on Si(111) at Room Temperature  

E-Print Network [OSTI]

Epitaxy of Nanocrystalline Silicon Carbide on Si(111) at Room Temperature Roberto Verucchi carbide (SiC) has unique chemical, physical, and mechanical properties. A factor strongly limiting Si or plastics that cannot withstand high temperatures. Silicon carbide (SiC) has unique properties that make

Alfè, Dario

39

A UV light enhanced TiO2/graphene device for oxygen sensing at room temperature  

E-Print Network [OSTI]

A UV light enhanced TiO2/graphene device for oxygen sensing at room temperature Jia Zhang,ab Chao temperature oxygen sensor based on TiO2/graphene device was developed with an enhanced sensing performance­hole pairs in the TiO2 film and the photogenerated electrons were scavenged by graphene and percolated

Cao, Wenwu

40

Temperature-controlled ionic liquid dispersive liquid phase microextraction combined with ultra-high-pressure liquid chromatography for the rapid determination of triclosan, triclocarban and methyl-triclosan in aqueous samples  

Science Journals Connector (OSTI)

As extraction solvents, ionic liquids have green characteristics. In this study, an environmentally benign analytical method termed temperature-controlled ionic liquid dispersive liquid phase microextraction (TIL...

JieHong Guo; XingHong Li; XueLi Cao; Lei Qu; DeKun Hou…

2010-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Room-temperature spin-polarized organic light-emitting diodes with a single ferromagnetic electrode  

SciTech Connect (OSTI)

In this paper, we demonstrate the concept of a room-temperature spin-polarized organic light-emitting diode (Spin-OLED) structure based on (i) the deposition of an ultra-thin p-type organic buffer layer on the surface of the ferromagnetic electrode of the Spin-OLED and (ii) the use of oxygen plasma treatment to modify the surface of that electrode. Experimental results demonstrate that the brightness of the developed Spin-OLED can be increased by 110% and that a magneto-electroluminescence of 12% can be attained for a 150?mT in-plane magnetic field, at room temperature. This is attributed to enhanced hole and room-temperature spin-polarized injection from the ferromagnetic electrode, respectively.

Ding, Baofu, E-mail: b.ding@ecu.edu.au; Alameh, Kamal, E-mail: k.alameh@ecu.edu.au [Electron Science Research Institute, Edith Cowan University, 270 Joondalup Drive, Joondalup WA 6027 Australia (Australia); Song, Qunliang [Institute for Clean Energy and Advanced Materials, Southwest University, Chongqing 400715 (China)

2014-05-19T23:59:59.000Z

42

Room-Temperature Multiferroic Hexagonal LuFeO3 Films  

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

The crystal and magnetic structures of single-crystalline hexagonal LuFeO3 films have been studied using x-ray, electron, and neutron diffraction methods. The polar structure of these films are found to persist up to 1050 K; and the switchability of the polar behavior is observed at room temperature, indicating ferroelectricity. An antiferromagnetic order was shown to occur below 440 K, followed by a spin reorientation resulting in a weak ferromagnetic order below 130 K. This observation of coexisting multiple ferroic orders demonstrates that hexagonal LuFeO3 films are room-temperature multiferroics.

Wang, Wenbin; Zhao, Jun; Wang, Wenbo; Gai, Zheng; Balke, Nina; Chi, Miaofang; Lee, Ho Nyung; Tian, Wei; Zhu, Leyi; Cheng, Xuemei; Keavney, David J.; Yi, Jieyu; Ward, Thomas Z.; Snijders, Paul C.; Christen, Hans M.; Wu, Weida; Shen, Jian; Xu, Xiaoshan

2013-06-01T23:59:59.000Z

43

Quantum confinement of zero-dimensional hybrid organic-inorganic polaritons at room temperature  

SciTech Connect (OSTI)

We report on the quantum confinement of zero-dimensional polaritons in perovskite-based microcavity at room temperature. Photoluminescence of discrete polaritonic states is observed for polaritons localized in symmetric sphere-like defects which are spontaneously nucleated on the top dielectric Bragg mirror. The linewidth of these confined states is found much sharper (almost one order of magnitude) than that of photonic modes in the perovskite planar microcavity. Our results show the possibility to study organic-inorganic cavity polaritons in confined microstructure and suggest a fabrication method to realize integrated polaritonic devices operating at room temperature.

Nguyen, H. S.; Lafosse, X.; Amo, A.; Bouchoule, S.; Bloch, J., E-mail: jacqueline.bloch@lpn.cnrs.fr [Laboratoire de Photonique et de Nanostructures, LPN/CNRS, Route de Nozay, 91460 Marcoussis (France); Han, Z. [Laboratoire de Photonique et de Nanostructures, LPN/CNRS, Route de Nozay, 91460 Marcoussis (France); Laboratoire Aimé Cotton, École Normale Supérieure de Cachan, CNRS, Université Paris Sud, bat. 505, campus d'Orsay, 91405 Orsay (France); Abdel-Baki, K.; Lauret, J.-S.; Deleporte, E. [Laboratoire Aimé Cotton, École Normale Supérieure de Cachan, CNRS, Université Paris Sud, bat. 505, campus d'Orsay, 91405 Orsay (France)

2014-02-24T23:59:59.000Z

44

The role of hydrogen in room-temperature ferromagnetism at graphite surfaces  

SciTech Connect (OSTI)

We present a x-ray dichroism study of graphite surfaces that addresses the origin and magnitude of ferromagnetism in metal-free carbon. We find that, in addition to carbon {pi} states, also hydrogen-mediated electronic states exhibit a net spin polarization with significant magnetic remanence at room temperature. The observed magnetism is restricted to the top {approx}10 nm of the irradiated sample where the actual magnetization reaches {approx_equal} 15 emu/g at room temperature. We prove that the ferromagnetism found in metal-free untreated graphite is intrinsic and has a similar origin as the one found in proton bombarded graphite.

Ohldag, Hendrik

2011-08-12T23:59:59.000Z

45

Reverse Atom Transfer Radical Polymerization of Methyl Methacrylate in Room-Temperature Ionic Liquids  

E-Print Network [OSTI]

liq- uids have been considered and used as a new generation of green solvents for a number of or solvents, a much smaller amount of the catalyst was used. After a relatively easy removal of the polymer Chemistry, Vol. 41, 143­151 (2003) © 2002 Wiley Periodicals, Inc. 143 #12;tion solvents will make

Wan, Xin-hua

46

Determination of Binding Constants of Cyclodextrins in Room-Temperature Ionic Liquids  

E-Print Network [OSTI]

, and virtually no vapor pressure. Because of these properties, they can serve as a "green" recyclable alternative to the volatile organic compounds that are traditionally used as industrial solvents.1-4 In fact, RTIL have been successfully used in many applications, including replacing traditional organic solvents in (1) organic

Reid, Scott A.

47

Heats of vaporization of room temperature ionic liquids by tunable vacuum ultraviolet photoionization  

E-Print Network [OSTI]

photoionization efficiency (PIE) data were acquired as thebeam. In this first study, PIE data are taken over a limitedthe source is reached before PIE curves are measured. The

Chambreau, Steven D.

2010-01-01T23:59:59.000Z

48

Room temperature "super-cooling" of water by interaction with hydrophobic groups in a lipidic gel  

E-Print Network [OSTI]

water, reflecting greater occupancy of higher energy vibrational states. In pure water, hydrogen bonding state between 250K and 240K. (Tiny droplets of water have been shown to spontaneously freeze at aboutRoom temperature "super-cooling" of water by interaction with hydrophobic groups in a lipidic gel F

49

Optical gain from the direct gap transition of Ge-on-Si at room temperature  

E-Print Network [OSTI]

We report direct band gap optical gain of tensile strained n+ epitaxial Ge-on-Si at room temperature, which confirms that band-engineered Ge-on-Si is a promising gain medium for monolithic optical amplifiers and lasers on Si.

Liu, Jifeng

50

Sensitive room-temperature terahertz detection via the photothermoelectric effect in graphene  

E-Print Network [OSTI]

Sensitive room-temperature terahertz detection via the photothermoelectric effect in graphene . The hot-electron photothermoelectric effect in graphene is a prom- ising detection mechanism; photoexcited, we demonstrate a graphene thermoelectric terahertz photodetector with sensi- tivity exceeding 10 V W

Murphy, Thomas E.

51

Room-temperature stationary sodium-ion batteries for large-scale electric energy storage  

E-Print Network [OSTI]

energy and utility applications, such as pump hydro, compressed air, y-wheel and electrochemicalRoom-temperature stationary sodium-ion batteries for large-scale electric energy storage Huilin Pan attention particularly in large- scale electric energy storage applications for renewable energy and smart

Wang, Wei Hua

52

Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single crystals  

E-Print Network [OSTI]

Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single Abstract The oxidation of aluminum single crystals is studied using molecular dynamics (MD) simulations with dynamic charge transfer between atoms. The simulations are performed on three aluminum low-index surfaces

Southern California, University of

53

Room Temperature Control During Season Switchover with Single Duct Variable Air Volume System Without Reheat  

E-Print Network [OSTI]

of VAV boxes to maintain room temperature at their setpoints. The thermostat action is switched from direct acting (DA) to reverse acting (RA) when the season changes from fall to winter and vice versa from winter to spring, based on the out side air...

Liu, C.; Deng, S.; Claridge, D. E.; Turner, W. D.; Bruner, H.

2003-01-01T23:59:59.000Z

54

Optical Detection and Manipulation of Single Molecules in Room-Temperature Solutions  

E-Print Network [OSTI]

CONCEPTS Optical Detection and Manipulation of Single Molecules in Room-Temperature Solutions. Keywords: single-moleculedetection - single-moleculema- nipulation - laser-induced fluorescence * optical, frcquency-modulated optical ab- sorption and fluorescence excitation have been used to investi- gate

Zare, Richard N.

55

Mirror thermal noise in laser interferometer gravitational wave detectors operating at room and cryogenic temperature  

E-Print Network [OSTI]

Mirror thermal noise is and will remain one of the main limitations to the sensitivity of gravitational wave detectors based on laser interferometers. We report about projected mirror thermal noise due to losses in the mirror coatings and substrates. The evaluation includes all kind of thermal noises presently known. Several of the envisaged substrate and coating materials are considered. The results for mirrors operated at room temperature and at cryogenic temperature are reported.

Janyce Franc; Nazario Morgado; Raffaele Flaminio; Ronny Nawrodt; Iain Martin; Liam Cunningham; Alan Cumming; Sheila Rowan; James Hough

2009-12-01T23:59:59.000Z

56

Room temperature broadband terahertz gains in graphene heterostructures based on inter-layer radiative transitions  

SciTech Connect (OSTI)

We exploit inter-layer radiative transitions to provide gains to amplify terahertz waves in graphene heterostructures. This is achieved by properly doping graphene sheets and aligning their energy bands so that the processes of stimulated emissions can overwhelm absorptions. We derive an expression for the gain estimation and show the gain is insensitive to temperature variation. Moreover, the gain is broadband and can be strong enough to compensate the free carrier loss, indicating graphene based room temperature terahertz lasers are feasible.

Tang, Linlong [Key Laboratory of High Energy Density Physics and Technology, College of Physics and Technology, Sichuan University, Chengdu, 610064 (China); Chongqing institute of green and intelligent technology, Chinese Academy of Sciences, Chongqing, 401122 (China); Du, Jinglei, E-mail: dujl@scu.edu.cn [Key Laboratory of High Energy Density Physics and Technology, College of Physics and Technology, Sichuan University, Chengdu, 610064 (China); Shi, Haofei, E-mail: shi@cigit.ac.cn; Wei, Dongshan; Du, Chunlei, E-mail: cldu@cigit.ac.cn [Chongqing institute of green and intelligent technology, Chinese Academy of Sciences, Chongqing, 401122 (China)

2014-10-15T23:59:59.000Z

57

Giant electrocaloric effect in asymmetric ferroelectric tunnel junctions at room temperature  

SciTech Connect (OSTI)

Room-temperature electrocaloric properties of Pt/BaTiO{sub 3}/SrRuO{sub 3} ferroelectric tunnel junctions (FTJs) are studied by using a multiscale thermodynamic model. It is found that there is a divergence in the adiabatic temperature change ?T for the two opposite polarization orientations. This difference under a typical writing voltage of 3?V can reach over 1?K as the barrier thickness decreases. Thanks to the ultrahigh external stimulus, a giant electrocaloric effect (1.53?K/V) with ?T being over 4.5?K can be achieved at room temperature, which demonstrates the perspective of FTJs as a promising solid-state refrigeration.

Liu, Yang, E-mail: liuyangphy52@gmail.com; Infante, Ingrid C.; Dkhil, Brahim, E-mail: brahim.dkhil@ecp.fr [Laboratoire Structures, Propriétés et Modélisation des Solides, UMR 8580 CNRS-Ecole Centrale Paris, Grande Voie des Vignes, Châtenay-Malabry Cedex 92295 (France); Lou, Xiaojie [Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology, and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049 (China)

2014-02-24T23:59:59.000Z

58

Oxygen-assisted room-temperature deposition of CoPt3 films with perpendicular magnetic anisotropy  

E-Print Network [OSTI]

Oxygen-assisted room-temperature deposition of CoPt3 films with perpendicular magnetic anisotropy B Jolla, California 92093 Received 23 July 2002; accepted 30 September 2002 Trace amounts of oxygen CoPt3 grown by vapor deposition at or slightly above room temperature. Oxygen is known to act

Hellman, Frances

59

Electroluminescence from isolated defects in zinc oxide, towards electrically triggered single photon sources at room temperature  

E-Print Network [OSTI]

Single photon sources are required for a wide range of applications in quantum information science, quantum cryptography and quantum communications. However, so far majority of room temperature emitters are only excited optically, which limits their proper integration into scalable devices. In this work, we overcome this limitation and present room temperature electrically triggered light emission from localized defects in zinc oxide (ZnO) nanoparticles and thin films. The devices emit at the red spectral range and show excellent rectifying behavior. The emission is stable over an extensive period of time, providing an important prerequisite for practical devices. Our results open up possibilities to build new ZnO based quantum integrated devices that incorporate solid-state single photon sources for quantum information technologies.

Choi, Sumin; Gentle, Angus; Ton-That, Cuong; Phillips, Matthew R; Aharonovich, Igor

2015-01-01T23:59:59.000Z

60

Quantum-confined single photon emission at room temperature from Silicon carbide tetrapods  

E-Print Network [OSTI]

Controlled engineering of isolated solid state quantum systems is one of the most prominent goals in modern nanotechnology. In this letter we demonstrate a previously unknown quantum system namely silicon carbide tetrapods. The tetrapods have a cubic polytype core (3C) and hexagonal polytype legs (4H) a geometry that creates a spontaneous polarization within a single tetrapod. Modeling of the tetrapod structures predict that a bound exciton should exist at the 3C 4H interface. The simulations are confirmed by the observation of fully polarized and narrowband single photon emission from the tetrapods at room temperature. The single photon emission provides important insights towards understanding the quantum confinement effects in non-spherical nanostructures. Our results pave the way to a new class of crystal phase nanomaterials that exhibit single photon emission at room temperature and therefore are suitable for sensing, quantum information and nanophotonics.

Castelletto, Stefania; Magyar, Andrew P; Gentle, Angus; Gali, Adam; Aharonovich, Igor

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Observation of optical spin injection into Ge-based structures at room temperature  

SciTech Connect (OSTI)

Non-zero spin polarization induced by optical orientation was clearly observed at room temperature in a Ge/Ge{sub 0.8}Si{sub 0.2} quantum well grown on Ge and a Ge layer grown on Si by molecular beam epitaxy, whereas it was absent in bulk Ge. This occurred because indirect-gap photoluminescence (PL), which can obscure the spin-polarization information carried by the direct-gap PL, was quenched by unintentional growth-related defects in the epitaxial layers. Such interpretation was confirmed by applying time gating that effectively removed the indirect-gap PL characterized by a slower rise time, which allowed us to demonstrate the existence of room-temperature spin polarization in bulk Ge.

Yasutake, Yuhsuke; Hayashi, Shuhei; Fukatsu, Susumu [Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902 (Japan)] [Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro, Tokyo 153-8902 (Japan); Yaguchi, Hiroyuki [Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama 338-8570 (Japan)] [Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama 338-8570 (Japan)

2013-06-17T23:59:59.000Z

62

Physical Properties of Ionic Liquids  

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

Physical Properties of Ionic Liquids Consisting of the Physical Properties of Ionic Liquids Consisting of the 1-Butyl-3-Methylimidazolium Cation with Various Anions and the Bis(trifluoromethylsulfonyl)imide Anion with Various Cations Hui Jin, Bernie O'Hare, Jing Dong, Sergei Arzhantsev, Gary A. Baker, James F. Wishart, Alan J. Benesi, and Mark Maroncelli J. Phys. Chem. B 112, 81-92 (2008). [Find paper at ACS Publications] Abstract: Physical properties of 4 room-temperature ionic liquids consisting of the 1-butyl-3-methylimidazolium cation with various perfluorinated anions and the bis(trifluoromethylsulfonyl)imide (Tf2N-) anion with 12 pyrrolidinium-, ammonium-, and hydroxyl-containing cations are reported. Electronic structure methods are used to calculate properties related to the size, shape, and dipole moment of individual ions. Experimental measurements of

63

Behavior of hydrophobic ionic liquids as liquid membranes on phenol removal: Experimental study and optimization  

E-Print Network [OSTI]

Room temperature ionic liquids show potential as an alternative to conventional organic membrane solvents mainly due to their properties of low vapor pressure, low volatility and they are often stable. In the present work, the technical feasibilities of room temperature ionic liquids as bulk liquid membranes for phenol removal were investigated experimentally. Three ionic liquids with high hydrophobicity were used and their phenol removal efficiency, membrane stability and membrane loss were studied. Besides that, the effects of several parameters, namely feed phase pH, feed concentration, NaOH concentration and stirring speeds on the performance of best ionic liquid membrane were also evaluated. Lastly, an optimization study on bulk ionic liquid membrane was conducted and the maximum phenol removal efficiency was compared with the organic liquid membranes. The preliminary study shows that high phenol extraction and stripping efficiencies of 96.21% and 98.10%, respectively can be achieved by ionic liquid memb...

Ng, Y S; Hashim, M A

2014-01-01T23:59:59.000Z

64

Room temperature ferromagnetism in Mn, Ni and Co ions doped Cu{sub 2}O nanorods  

SciTech Connect (OSTI)

Here we report the synthesis and characterization of Cu{sub 2}O nanorods doped with Mn, Ni and Co transition metal ions and the study of their magnetic properties. Synthesis of the nanorods was carried out by the modified polyol method. Powder X-ray diffraction patterns clearly showed them to be polycrystalline single phase material. They exhibited ferromagnetic behavior at room temperature, however no such behavior was observed for the reference undoped sample, which indicated that unintentionally introduced magnetic impurities were not responsible for the observed phenomenon. Ferromagnetic behavior was found to be dependent on the dopant concentration and increased consistently with its increment in the material. The total magnetic moments contribution was calculated for the dopant concentration and was found to be insignificant to account for the observed ferromagnetism, therefore it was suggested that ferromagnetism could have conjured up from the induced magnetic moment in the defects created as cation vacancies in the material. The presence of the defects was supported by the room temperature photoluminescence study which showed that intensity of the peaks was dependent on the dopant concentration and increased consistently with it. There was strong correlation between the magnitude of the photoluminescence peak and the observed ferromagnetic property in the doped samples. -- Graphical Abstract: Room temperature ferromagnetism was observed in the Cu{sub 2}O nanorods doped with Mn, Ni and Co ions. The origin seems to be the defects of cation vacancies created by the dopant ions. Display Omitted

Ahmed, Asar [Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India); Gajbhiye, Namdeo S., E-mail: nsg@iitk.ac.i [Department of Chemistry, SL-214, Southern Lab, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh (India)

2010-12-15T23:59:59.000Z

65

Room-Temperature Operation of DC Axially Discharged Fast Axial-Flow CO Laser  

Science Journals Connector (OSTI)

A compact CO laser with a DC axially discharged fast-axial flow has been operated at room temperature (270 – 300 K), achieving ~ 165 W per unit discharge length in CW mode under xenon (Xe) gas addition. A maximum power of 385 W per unit gain length (1 m) has been similarly achieved with Xe gas at 235 – 275 K. Dependence of output power on gas-flow velocity v , discharge current I dis, and gas composition is examined experimentally and theoretically explained, and dependence of oscillation lines on v is also investigated. Moreover, the effect of gas-flow velocity on gas temperature is also examined.

Yutaka Kodama; Heihachi Sato

1996-01-01T23:59:59.000Z

66

Surface Combustion Microengines Based on Photocatalytic Oxidations of Hydrocarbons at Room Temperature  

Science Journals Connector (OSTI)

Surface Combustion Microengines Based on Photocatalytic Oxidations of Hydrocarbons at Room Temperature ... For instance internal combustion engines depend on an exothermic combustion of a mixture of hydrocarbon fuel or hydrogen and air, inside a sealed cylinder equipped with a movable piston.1 Once ignited using an electrical or compression heating system, the combustion products have more available energy than the original mixture, and this energy can be translated into work by driving the piston. ... One possible explanation for the lack of data is that the temperature increase of surface or suspended colloids is hard to measure due to fast heat dissipation through solid bond vibrations or solvent molecules in continuous UV radiation. ...

Ming Su; Vinayak P. Dravid

2005-09-22T23:59:59.000Z

67

Room temperature ferromagnetism in undoped and Fe doped ZnO nanorods: Microwave-assisted synthesis  

SciTech Connect (OSTI)

One-dimensional (1D) undoped and Fe doped ZnO nanorods of average length {approx}1 {mu}m and diameter {approx}50 nm have been obtained using a microwave-assisted synthesis. The magnetization (M) and coercivity (H{sub c}) value obtained for undoped ZnO nanorods at room temperature is {approx}5x10{sup -3} emu/g and {approx}150 Oe, respectively. The Fe doped ZnO samples show significant changes in M -H loop with increasing doping concentration. Both undoped and Fe doped ZnO nanorods exhibit a Curie transition temperature (T{sub c}) above 390 K. Electron spin resonance and Moessbauer spectra indicate the presence of ferric ions. The origin of ferromagnetism in undoped ZnO nanorods is attributed to localized electron spin moments resulting from surface defects/vacancies, where as in Fe doped samples is explained by F center exchange mechanism. -- Graphical abstract: Room temperature ferromagnetism has been reported in undoped and Fe doped ZnO nanorods of average length {approx}1 {mu}m and diameter {approx}50 nm. Display Omitted Research Highlights: {yields} Microwave-assisted synthesis of undoped and Fe doped ZnO nanorods. {yields} Observation of room temperature ferromagnetism in undoped and Fe doped ZnO nanorods. {yields} Transition temperature (T{sub c}) obtained in undoped and doped samples is above 390 K. {yields} In undoped ZnO origin of ferromagnetism is explained in terms of defects/vacancies. {yields} Ferromagnetism in Fe doped ZnO is explained by F-center exchange mechanism.

Limaye, Mukta V.; Singh, Shashi B. [DST unit on Nanoscience, Department of Physics, University of Pune, Pune 411007 (India); Das, Raja; Poddar, Pankaj [Physical and Materials Chemistry Division, National Chemical Laboratory, Pune 411 008 (India); Kulkarni, Sulabha K., E-mail: s.kulkarni@iiserpune.ac.i [DST unit on Nanoscience, Indian Institute of Science Education and Research, Pune 411021 (India)

2011-02-15T23:59:59.000Z

68

Synthesis of full-density nanocrystalline tungsten carbide by reduction of tungstic oxide at room temperature  

SciTech Connect (OSTI)

Among the hard alloys, WC alloys find wide industrial applications as tips for cutting tools and wear-resistant parts. Their intrinsic resistance to oxidation and corrosion at high temperatures also makes them desirable as a protective coating for devices at elevated temperatures. In the industrial scale of production, WC is prepared by a direct union of the elements at a temperature of 3,273 to 3,473 K. Accordingly, the high cost of preparation is a disadvantage of this process. Here, the authors report a novel technique for preparing a large amount of WC powder using a simple method. This process is based on mechanical solid-state reduction (MSSR) followed y solid-state reaction (SSR) during room-temperature ball milling (a high energy ball mill, Fritsch P6, was used at a rotation speed of 4.2 s{sup {minus}1}) of a mixture of WO{sub 3}, Mg, and C powders.

El-Eskandarany, M.S.; Omori, M.; Ishikuro, M.; Konno, T.J.; Takada, K.; Sumiyama, K.; Hirai, T.; Suzuki, K. [Tohoku Univ., Sendai (Japan)

1996-12-01T23:59:59.000Z

69

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature  

E-Print Network [OSTI]

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature Simone film crystal growth of silicon carbide (SiC), a semiconductor syn- thesized to replace silicon in harsh

Alfè, Dario

70

Energy Consumption Estimation for Room Air-conditioners Using Room Temperature Simulation with One-Minute Intervals  

E-Print Network [OSTI]

time can be known so that its energy consumption can be estimated accurately. In order to verify the simulation accuracy, an actual room equipped with a gas-engine heat pump (GHP) air-conditioning system is studied by both simulation and measurement...

Wang, F.; Yoshida, H.; Matsumoto, K.

2006-01-01T23:59:59.000Z

71

An atomic clock with $1\\times 10^{-18}$ room-temperature blackbody Stark uncertainty  

E-Print Network [OSTI]

The Stark shift due to blackbody radiation (BBR) is the key factor limiting the performance of many atomic frequency standards, with the BBR environment inside the clock apparatus being difficult to characterize at a high level of precision. Here we demonstrate an in-vacuum radiation shield that furnishes a uniform, well-characterized BBR environment for the atoms in an ytterbium optical lattice clock. Operated at room temperature, this shield enables specification of the BBR environment to a corresponding fractional clock uncertainty contribution of $5.5 \\times 10^{-19}$. Combined with uncertainty in the atomic response, the total uncertainty of the BBR Stark shift is now $1\\times10^{-18}$. Further operation of the shield at elevated temperatures enables a direct measure of the BBR shift temperature dependence and demonstrates consistency between our evaluated BBR environment and the expected atomic response.

Beloy, K; Phillips, N B; Sherman, J A; Schioppo, M; Lehman, J; Feldman, A; Hanssen, L M; Oates, C W; Ludlow, A D

2014-01-01T23:59:59.000Z

72

Fluorescence of synthetic DNA's at room temperature and neutral pH  

Science Journals Connector (OSTI)

The fluorescence of two synthetic DNA's, polyd(m5C) and poly[d(I-m5C)] is demonstrated at room temperature and neutral pH. Polyd(m5C) at pH 8.0 exhibits fluorescence qualitatively the same as the mononucleotide: the quantum yield is independent of excitation energy; the emission maximum is at 2.92 ??1 (355 nm). Poly[d(I-m5C)] exhibits fluorescence resembling that of the 5-methyldeoxycytidine component with an additional feature that is probably due to weak deoxyinosine fluorescence. Neither of these synthetic DNA's exhibits spectra suggestive of exciplex formation.

James E. Gill

1971-01-01T23:59:59.000Z

73

Room-temperature atmospheric argon plasma jet sustained with submicrosecond high-voltage pulses  

SciTech Connect (OSTI)

In this letter, an experimental study is presented to characterize a room-temperature plasma jet in atmospheric argon generated with submicrosecond voltage pulses at 4 kHz. Distinct from sinusoidally produced argon discharges that are prone to thermal runaway instabilities, the pulsed atmospheric argon plasma jet is stable and cold with an electron density 3.9 times greater than that in a comparable sinusoidal jet. Its optical emission is also much stronger. Electrical measurement suggests that the discharge event is preceded with a prebreakdown phase and its plasma stability is facilitated by the short voltage pulses.

Walsh, J. L.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2007-11-26T23:59:59.000Z

74

Room temperature continuous wave operation of quantum cascade lasers with 12.5% wall plug efficiency  

SciTech Connect (OSTI)

An InP based quantum cascade laser heterostructure emitting at 4.6 {mu}m was grown with gas-source molecular beam epitaxy. The wafer was processed into a conventional double-channel ridge waveguide geometry with ridge widths of 19.7 and 10.6 {mu}m without semi-insulating InP regrowth. An uncoated, narrow ridge device with a 4.8 mm cavity length was epilayer down bonded to a diamond submount and exhibits 2.5 W maximum output power with a wall plug efficiency of 12.5% at room temperature in continuous wave operation.

Bai, Y.; Slivken, S.; Darvish, S. R.; Razeghi, M. [Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 (United States)

2008-07-14T23:59:59.000Z

75

Room-temperature phosphorescence of hydroxyl-substituted aromatics adsorbed on solid surfaces  

SciTech Connect (OSTI)

Several polymer-salt mixtures were examined as solid surfaces for room-temperature phosphorescence (RTP). A variety of hydroxyl-substituted aromatic compounds were observed to give RTP when absorbed on poly(acrylic acid) (PAA)-sodium halide mixtures and filter paper. A solid-sample holding plate was used with a spectrodensitometer for solid surface luminescence detection of components on powder and filter paper adsorbents. RTP analytical data, including linear ranges of calibration curves and limits of detection for several compounds, were compared for 1% PAA-NaBr powder and filter paper.

Dalterio, R.A.; Hurtubise, R.J.

1982-02-01T23:59:59.000Z

76

Near-infrared single-photons from aligned molecules in ultrathin crystalline films at room temperature  

E-Print Network [OSTI]

We investigate the optical properties of Dibenzoterrylene (DBT) molecules in a spin-coated crystalline film of anthracence. By performing single molecule studies, we show that the dipole moments of the DBT molecules are oriented parallel to the plane of the film. Despite a film thickness of only 20 nm, we observe an exceptional photostability at room temperature and photon count rates around one million per second from a single molecule. These properties together with an emission wavelength around 800 nm make this system attractive for applications in nanophotonics and quantum optics.

C. Toninelli; K. Early; J. Bremi; A. Renn; S. Goetzinger; V. Sandoghdar

2010-02-04T23:59:59.000Z

77

Room temperature triggered single-photon source in the near infrared  

E-Print Network [OSTI]

We report the realization of a solid-state triggered single-photon source with narrow emission in the near infrared at room temperature. It is based on the photoluminescence of a single nickel-nitrogen NE8 colour centre in a chemical vapour deposited diamond nanocrystal. Stable single-photon emission has been observed in the photoluminescence under both continuous-wave and pulsed excitations. The realization of this source represents a step forward in the application of diamond-based single-photon sources to Quantum Key Distribution (QKD) under practical operating conditions.

E. Wu; James Rabeau; Gérard Roger; François Treussart; Heping Zeng; Philippe Grangier; Steven Prawer; Jean-François Roch

2007-08-14T23:59:59.000Z

78

Room temperature solution-processed electron transport layer for organic solar cells  

Science Journals Connector (OSTI)

Abstract We present a new recipe for a solution-processed titanium oxide (TiOx) based electron transport layer at room temperature. Due to its high chemical compatibility with all types of organic blends (semi-crystalline or amorphous) and it is good adhesion to both surfaces of glass/ITO substrate and the active layer (blend), the buffer layer is suitable for use in organic solar cell devices with conventional, inverted or multi-junction structures. The main goal of this recipe is producing with easiness an repeatable and stable precursor that will leads to titanium oxide buffer layer each time with the same quality. Since the processing of the titanium oxide layer itself does not require any initial or additional treatment before and after the coating, and can even be carried in air as well as under protective atmosphere, our room temperature solution-processed electron transport layer is highly versatile and very promising for cost effective mass production of organic solar cells.

A. Hadipour; R. Müller; P. Heremans

2013-01-01T23:59:59.000Z

79

Mechanical and microstructural characterizations of ultrafine grained Zircaloy-2 produced by room temperature rolling  

Science Journals Connector (OSTI)

Abstract The effect of deformation strain at room temperature on the microstructural and mechanical properties of Zircaloy-2 was investigated in the present work. The sample was initially heat treated at 800 °C in argon environment and quenched in mercury prior to rolling. The deformed alloys were characterized by using EBSD and TEM. It reveals the misorientation of incidental grain boundaries (IDBs) due to large plastic strain induced in the sample. The recovery of deformed alloy upon annealing leads to the formation of ultrafine and nanostructured grains in the alloy. The hardness achieved after 85% room temperature rolling (RTR) is found to be 269 HV, while the tensile strength is 679 MPa and 697 MPa in the rolling and transverse direction, respectively. The improvement in strength is due to generation of high dislocation density and ultrafine grains in the deformed alloy with 85% thickness reduction, during rolling. The deformed alloy subjected to annealing at 400 °C for 30 min sample shows increase in ductility (6% and 7.2%) in rolling and transverse direction, respectively, due to the annihilation of dislocations as evident from the TEM study.

Sunkulp Goel; R. Jayaganthan; I.V. Singh; D. Srivastava; G.K. Dey; N. Saibaba

2014-01-01T23:59:59.000Z

80

Iron-aluminum alloys having high room-temperature and method for making same  

DOE Patents [OSTI]

A wrought and annealed iron-aluminum alloy is described consisting essentially of 8 to 9.5% aluminum, an effective amount of chromium sufficient to promote resistance to aqueous corrosion of the alloy, and an alloying constituent selected from the group of elements consisting of an effective amount of molybdenum sufficient to promote solution hardening of the alloy and resistance of the alloy to pitting when exposed to solutions containing chloride, up to about 0.05% carbon with up to about 0.5% of a carbide former which combines with the carbon to form carbides for controlling grain growth at elevated temperatures, and mixtures thereof, and the balance iron, wherein said alloy has a single disordered [alpha] phase crystal structure, is substantially non-susceptible to hydrogen embrittlement, and has a room-temperature ductility of greater than 20%.

Sikka, V.K.; McKamey, C.G.

1993-08-24T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Preparation of room temperature terahertz detector with lithium tantalate crystal and thin film  

SciTech Connect (OSTI)

Research on room temperature terahertz (THz) detector is essential for promoting the application of THz science and technology. Both lithium tantalate crystal (LiTaO{sub 3}) and lithium tantalate thin film were used to fabricate the THz detector in this paper. Polishing process were used to reduce the thickness of LiTaO{sub 3} crystal slice by chemical mechanical polishing techniques and an improved sol-gel process was used to obtain high concentration LiTaO{sub 3} precursor solution to fabricate LiTaO{sub 3} thin film. Three dimension models of two THz detectors were set up and the temperature increasing map of two devices were simulated using finite element method. The lowest noise equivalent power value for terahertz detector using pyroelectric material reaches 6.8 × 10{sup ?9} W at 30 Hz operating frequency, which is suitable for THz imaging application.

Wang, Jun, E-mail: ueoewj@gmail.com; Gou, Jun; Li, Weizhi [State Key Lab of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054 (China)] [State Key Lab of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054 (China)

2014-02-15T23:59:59.000Z

82

Searching Room Temperature Ferromagnetism in Wide Gap Semiconductors Fe-doped Strontium Titanate and Zinc Oxide  

E-Print Network [OSTI]

Scientic findings in the very beginning of the millennium are taking us a step further in the new paradigm of technology: spintronics. Upgrading charge-based electronics with the additional degree of freedom of the carriers spin-state, spintronics opens a path to the birth of a new generation of devices with the potential advantages of non-volatility and higher processing speed, integration densities and power efficiency. A decisive step towards this new age lies on the attribution of magnetic properties to semiconductors, the building block of today's electronics, that is, the realization of ferromagnetic semiconductors (FS) with critical temperatures above room temperature. Unfruitful search for intrinsic RT FS lead to the concept of Dilute(d) Magnetic Semiconductors (DMS): ordinary semiconductor materials where 3 d transition metals randomly substitute a few percent of the matrix cations and, by some long-range mechanism, order ferromagnetically. The times are of intense research activity and the last few ...

Pereira, LMC; Wahl, U

83

Complexation and optimization of use of non-ionic ethoxylated surfactants in EOR from low temperature fields  

SciTech Connect (OSTI)

Complexation with aquated cations (e.g., Al/sup 3/, etc.) is shown to enable the extent of adsorption of ethoxylated non-ionic surfactants on sandstone and limestone reservoir rocks to be controlled and minimized. If such reservoirs are at temperatures below the cloud point of the complexed surfactants, such methods can allow EOR with such non-ionic surfactants in low concentrations, NMR evidence is presented to show how the complexation takes place and how it may be controlled. Its beneficial effect on oil recovery is demonstrated with microcapillary de-oiling and surfactant flood tests. Its effect is explained in terms of changes in surfactant characteristics, e.g., phase equilibria, rate and extent of adsorption, oil solubilization and solubility, interfacial tension, viscosity, and contact angles.

Lawrence, S.A.; Pilc, J.; Sermon, P.A.; Readman, J.; Hurd, B.G.

1988-05-01T23:59:59.000Z

84

Highly Selective and Near-Quantitative Conversion of Fructose to 5-Hydroxymethylfurfural Using Mildly Acidic Ionic Liquids  

Science Journals Connector (OSTI)

Highly Selective and Near-Quantitative Conversion of Fructose to 5-Hydroxymethylfurfural Using Mildly Acidic Ionic Liquids ... The ionic liquid, [C4C1im][HSO4], provides an acidic solvent in which to convert fructose to 5-hydroxymethylfurfural rapidly and in high yield. ... The room-temperature ionic liquid, [C4C1im][HSO4], provides a multi-faceted medium in which to convert fructose to the versatile chemical building block, 5-hydroxymethylfurfural (HMF). ...

Sanan Eminov; James D. E. T. Wilton-Ely; Jason P. Hallett

2014-02-13T23:59:59.000Z

85

Room temperature ferromagnetism in Co defused CdTe nanocrystalline thin films  

SciTech Connect (OSTI)

Nanocrystalline Co defused CdTe thin films were prepared using electron beam evaporation technique by depositing CdTe/Co/CdTe stacked layers with different Co thickness onto glass substrate at 373 K followed by annealing at 573K for 2 hrs. Structural, morphological and magnetic properties of of all the Co defused CdTe thin films has been investigated. XRD pattern of all the films exhibited zinc blende structure with <111> preferential orientation without changing the crystal structure of the films. The grain size of the films increased from 31.5 nm to 48.1 nm with the increase of Co layer thickness from 25nm to 100nm. The morphological studies showed that uniform texture of the films and the presence of Co was confirmed by EDAX. Room temperature magnetization curves indicated an improved ferromagnetic behavior in the films with increase of the Co thickness.

Rao, N. Madhusudhana; Kaleemulla, S.; Begam, M. Rigana [Materials Physics Division, School of Advanced Sciences, VIT University, Vellore - 632 014 (India)

2014-04-24T23:59:59.000Z

86

High-k (k=30) amorphous hafnium oxide films from high rate room temperature deposition  

SciTech Connect (OSTI)

Amorphous hafnium oxide (HfO{sub x}) is deposited by sputtering while achieving a very high k{approx}30. Structural characterization suggests that the high k is a consequence of a previously unreported cubiclike short range order in the amorphous HfO{sub x} (cubic k{approx}30). The films also possess a high electrical resistivity of 10{sup 14} {Omega} cm, a breakdown strength of 3 MV cm{sup -1}, and an optical gap of 6.0 eV. Deposition at room temperature and a high deposition rate ({approx}25 nm min{sup -1}) makes these high-k amorphous HfO{sub x} films highly advantageous for plastic electronics and high throughput manufacturing.

Li, Flora M.; Bayer, Bernhard C.; Hofmann, Stephan; Milne, William I.; Flewitt, Andrew J. [Department of Engineering, Electrical Engineering Division, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0FA (United Kingdom); Dutson, James D.; Wakeham, Steve J.; Thwaites, Mike J. [Plasma Quest Ltd., Unit 1B, Rose Estate, Osborn Way, Hook, Hampshire RG27 9UT (United Kingdom)

2011-06-20T23:59:59.000Z

87

Solid–solid transformation route to nanocrystalline sodalite from Al-PILC at room temperature  

Science Journals Connector (OSTI)

The present study describes a solid–solid transformation of nanocrystalline sodalite from the solid gel mixture of Al2O3-pillared montmorillonite (Al-PILC) with sodium hydroxide at room temperature (25 °C) under an ambient atmosphere. Powder X-ray diffraction (XRD) analysis confirms that the X-ray crystalline sodalite products are crystallized after 12 days, whereas infrared absorption (IR) spectra reveal that diagnostic IR absorption peaks due to single four-membered ring of sodalite framework is observed even after 1 day. Scanning electron microscopy (SEM) shows that Al-PILC is transformed into discrete nano-sized sodalite particles (?50 nm). Although the induction period, the time elapsing before nucleation, for the solid–solid transformation takes much longer (12 days), the nanocrystalline sodalite is successfully obtained at this extremely mild synthetic condition through solid–solid transformation.

Sung-Reol Lee; Man Park; Yang-Su Han; Jin-Ho Choy

2004-01-01T23:59:59.000Z

88

Method for stabilizing low-level mixed wastes at room temperature  

DOE Patents [OSTI]

A method to stabilize solid and liquid waste at room temperature is provided comprising combining solid waste with a starter oxide to obtain a powder, contacting the powder with an acid solution to create a slurry, said acid solution containing the liquid waste, shaping the now-mixed slurry into a predetermined form, and allowing the now-formed slurry to set. The invention also provides for a method to encapsulate and stabilize waste containing cesium comprising combining the waste with Zr(OH){sub 4} to create a solid-phase mixture, mixing phosphoric acid with the solid-phase mixture to create a slurry, subjecting the slurry to pressure; and allowing the now pressurized slurry to set. Lastly, the invention provides for a method to stabilize liquid waste, comprising supplying a powder containing magnesium, sodium and phosphate in predetermined proportions, mixing said powder with the liquid waste, such as tritium, and allowing the resulting slurry to set. 4 figs.

Wagh, A.S.; Singh, D.

1997-07-08T23:59:59.000Z

89

Room temperature broadband coherent terahertz emission induced by dynamical photon drag in graphene  

E-Print Network [OSTI]

Nonlinear couplings between photons and electrons in new materials give rise to a wealth of interesting nonlinear phenomena. This includes frequency mixing, optical rectification or nonlinear current generation, which are of particular interest for generating radiation in spectral regions that are difficult to access, such as the terahertz gap. Owing to its specific linear dispersion and high electron mobility at room temperature, graphene is particularly attractive for realizing strong nonlinear effects. However, since graphene is a centrosymmetric material, second-order nonlinearities a priori cancel, which imposes to rely on less attractive third-order nonlinearities. It was nevertheless recently demonstrated that dc-second-order nonlinear currents as well as ultrafast ac-currents can be generated in graphene under optical excitation. The asymmetry is introduced by the excitation at oblique incidence, resulting in the transfer of photon momentum to the electron system, known as the photon drag effect. Here...

Maysonnave, J; Wang, F; Maero, S; Berger, C; de Heer, W; Norris, T B; De Vaulchier, L A; Dhillon, S; Tignon, J; Ferreira, R; Mangeney, J

2015-01-01T23:59:59.000Z

90

Method for stabilizing low-level mixed wastes at room temperature  

DOE Patents [OSTI]

A method to stabilize solid and liquid waste at room temperature is provided comprising combining solid waste with a starter oxide to obtain a powder, contacting the powder with an acid solution to create a slurry, said acid solution containing the liquid waste, shaping the now-mixed slurry into a predetermined form, and allowing the now-formed slurry to set. The invention also provides for a method to encapsulate and stabilize waste containing cesium comprising combining the waste with Zr(OH).sub.4 to create a solid-phase mixture, mixing phosphoric acid with the solid-phase mixture to create a slurry, subjecting the slurry to pressure; and allowing the now pressurized slurry to set. Lastly, the invention provides for a method to stabilize liquid waste, comprising supplying a powder containing magnesium, sodium and phosphate in predetermined proportions, mixing said powder with the liquid waste, such as tritium, and allowing the resulting slurry to set.

Wagh, Arun S. (Joliet, IL); Singh, Dileep (Westmont, IL)

1997-01-01T23:59:59.000Z

91

Ceramic stabilization of hazardous wastes: a high performance room temperature process  

SciTech Connect (OSTI)

ANL has developed a room-temperature process for converting hazardous materials to a ceramic structure. It is similar to vitrification but is achieved at low cost, similar to conventional cement stabilization. The waste constituents are both chemically stabilized and physically encapsulated, producing very low leaching levels and the potential for delisting. The process, which is pH-insensitive, is ideal for inorganic sludges and liquids, as well as mixed chemical-radioactive wastes, but can also handle significant percentages of salts and even halogenated organics. High waste loadings are possible and densification occurs,so that volumes are only slightly increased and in some cases (eg, incinerator ash) are reduced. The ceramic product has strength and weathering properties far superior to cement products.

Maloney, M.D.

1996-10-01T23:59:59.000Z

92

Room-temperature condensation in whispering gallery microresonators assisted by longitudinal optical phonons  

E-Print Network [OSTI]

We report condensation of hexagonal whispering gallery modes (WGM) at room temperature in ZnO microwires that embody nearly perfect polygonal whispering gallery microresonators. The condensate regime is achieved in the UV spectral range only at energies below the first longitudinal optical (LO) phonon replica of the free ZnO A-exciton transition and at non-zero wave vectors. We demonstrate that the multimodality of the WGM system and the high population of free excitons and phonons with various momenta strongly enhance the probability of an interaction of quasiparticles of the cavity exciton-photon system with LO phonons. We further examine the far-field mode pattern of lasing WGM and demonstrate their spatial coherence.

Dietrich, Christof P; Michalsky, Tom; Lange, Martin; Grundmann, Marius

2015-01-01T23:59:59.000Z

93

Portable room-temperature self-powered/active H2 sensor driven by human motion through piezoelectric screening effect  

Science Journals Connector (OSTI)

Abstract Room-temperature high H2 sensing has been realized from SnO2/ZnO nanoarray nanogenerator. Without any external electricity power source, the portable device can be self-powered under the driving of human motion, in which the piezoelectric output can actively act as both the power source and H2 sensing signal. Upon exposure to 800 ppm H2 at room temperature, the piezoelectric output voltage of the device under the same applied deformation decreases from 0.80 V (in dry air) to 0.14 V, and the sensitivity is up to 471.4. The detection limit is ~10 ppm H2, and the selectivity against H2 at room temperature is very high. The excellent room-temperature H2 sensing performance can be attributed to the coupling of the piezoelectric screening effect of ZnO nanowires and the conversion of SnO2/ZnO heterojunctions. This study can stimulate a research trend for the development of the next generation of portable room-temperature H2 sensors.

Yongming Fu; Weili Zang; Penglei Wang; Lili Xing; Xinyu Xue; Yan Zhang

2014-01-01T23:59:59.000Z

94

Pt/ZnO nanoarray nanogenerator as self-powered active gas sensor with linear ethanol sensing at room temperature  

Science Journals Connector (OSTI)

A self-powered gas sensor that can actively detect ethanol at room temperature has been realized from a Pt/ZnO nanoarray nanogenerator. Pt nanoparticles are uniformly distributed on the whole surface of ZnO nanowires. The piezoelectric output of Pt/ZnO nanoarrays can act not only as a power source, but also as a response signal to ethanol at room temperature. Upon exposure to dry air and 1500 ppm ethanol at room temperature, the piezoelectric output of the device under the same compressive strain is 0.672 and 0.419 V, respectively. Moreover, a linear dependence of the sensitivity on the ethanol concentration is observed. Such a linear ethanol sensing at room temperature can be attributed to the atmosphere-dependent variety of the screen effect on the piezoelectric output of ZnO nanowires, the catalytic properties of Pt nanoparticles, and the Schottky barriers at Pt/ZnO interfaces. The present results can stimulate research in the direction of designing new material systems for self-powered room-temperature gas sensing.

Yayu Zhao; Xuan Lai; Ping Deng; Yuxin Nie; Yan Zhang; Lili Xing; Xinyu Xue

2014-01-01T23:59:59.000Z

95

New insights into designing metallacarborane based room temperature hydrogen storage media  

SciTech Connect (OSTI)

Metallacarboranes are promising towards realizing room temperature hydrogen storage media because of the presence of both transition metal and carbon atoms. In metallacarborane clusters, the transition metal adsorbs hydrogen molecules and carbon can link these clusters to form metal organic framework, which can serve as a complete storage medium. Using first principles density functional calculations, we chalk out the underlying principles of designing an efficient metallacarborane based hydrogen storage media. The storage capacity of hydrogen depends upon the number of available transition metal d-orbitals, number of carbons, and dopant atoms in the cluster. These factors control the amount of charge transfer from metal to the cluster, thereby affecting the number of adsorbed hydrogen molecules. This correlation between the charge transfer and storage capacity is general in nature, and can be applied to designing efficient hydrogen storage systems. Following this strategy, a search for the best metallacarborane was carried out in which Sc based monocarborane was found to be the most promising H{sub 2} sorbent material with a 9 wt.% of reversible storage at ambient pressure and temperature.

Bora, Pankaj Lochan; Singh, Abhishek K. [Materials Research Centre, Indian Institute of Science, Bangalore 560012 (India)] [Materials Research Centre, Indian Institute of Science, Bangalore 560012 (India)

2013-10-28T23:59:59.000Z

96

ROOM TEMPERATURE COMPRESSION PROPERTIES OF TWO HEATS OF UNIRRADIATED V-4Cr-4Ti  

SciTech Connect (OSTI)

Vanadium alloys are of interest to the Fusion program as potential first wall structural materials. The expected irradiation conditions for the first wall structural material include a range of temperatures where very high hardening caused by a high density of small, but shearable defect clusters results in a type of deformation called "localized deformation". At the onset of yield in a tensile test, a dislocation may move through a grain shearing the obstacles and clearing out a channel. Subsequent dislocations may easily pass through this channel. As the test progresses, more channels form. In the early stages of deformation, it is thought that the plastic deformation is confined to these channels. One important macroscopic result of this deformation behavior is rapid onset of necking in a tensile test and very low uniform elongation. As a means to help understand the range of stress states where localized deformation may adversely affect macroscopic ductility in vanadium alloys, compression test specimens fabricated from two heats of V-4Cr-4Ti are currently under irradiation in the High Flux Isotope Reactor (HFIR). The results of room temperature compression tests on the unirradiated control materials are presented here and compared with uniaxial tensile values from the literature.

Toloczko, Mychailo B.; Kurtz, Richard J.

2004-06-30T23:59:59.000Z

97

Charge trapping in imidazolium ionic liquids  

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

trapping in imidazolium ionic liquids trapping in imidazolium ionic liquids I. A. Shkrob and J. F. Wishart J. Phys. Chem. B 113, 5582-5592 (2009). [Find paper at ACS Publications] or use ACS Articles on Request Abstract: Room-temperature ionic liquids (ILs) are a promising class of solvents for applications ranging from photovoltaics to solvent extractions. Some of these applications involve the exposure of the ILs to ionizing radiation, which stimulates interest in their radiation and photo- chemistry. In the case of ILs consisting of 1,3-dialkylimidazolium cations and hydrophobic anions, ionization, charge transfer and redox reactions yield charge-trapped species thought to be radicals resulting from neutralization of the constituent ions. Using computational chemistry methods and the recent results on electron spin resonance (ESR) and transient absorption

98

Structural and elastic properties of Ge after Kr-ion irradiation at room temperature  

Science Journals Connector (OSTI)

Changes in the elastic properties of Ge induced by room-temperature irradiation with 3.5-MeV Kr ions have been determined and correlated with changes in the microstructure determined by transmission electron microscopy. Elastic-shear-moduli changes were measured by Brillouin scattering, and changes in local atomic arrangement were determined by Raman scattering. Amorphization decreased the elastic shear modulus of Ge by 17%. The fractional decrease was correlated with the amorphous volume fraction with a cross section of 4.5±0.5 nm2/ion. No change was observed in the shear modulus during void formation and growth. The elastic properties of the voided material are described by the Voigt averaging. However, as the voids evolved into a fibrous spongelike microstructure, a second dramatic elastic softening occurs which we attribute to the inability of the fibrous structure to support shear stresses. Raman scattering showed that, once formed, there was no change in the structure of the amorphous material at the atomic scale during void formation and subsequent void coalescence.

R. C. Birtcher; M. H. Grimsditch; L. E. McNeil

1994-10-01T23:59:59.000Z

99

A room temperature operating cryogenic cell for in vivo monitoring of dry snow metamorphism by X-ray microtomography  

E-Print Network [OSTI]

1mm A room temperature operating cryogenic cell for in vivo monitoring of dry snow metamorphism Examples of 3D images obtained 19 days 84 days0 day OUR WORK: We developed a new in vivo cryogenic cell conductivity of air ~ 0.0015 Wm-1K-1 (reduced by 28 compared to that at atmospheric pressure). Cryogenic cell

Ribes, Aurélien

100

Nanobonding for Multi-Junction Solar Cells at Room Temperature T. Yu, M. M. R. Howlader*, F. Zhang, M. Bakr  

E-Print Network [OSTI]

in windows, roofs and outside walls of new houses and buildings at the construction stage [1]. Among variousNanobonding for Multi-Junction Solar Cells at Room Temperature T. Yu, M. M. R. Howlader*, F. Zhang of the interfacial properties of Si/GaAs indicates its potential use on the fabrication of multi-junction solar cells

Howlader, Matiar R

Note: This page contains sample records for the topic "room temperature ionic" 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

Room Temperature, Intrinsic Vacancy Mediated Ferromagnetism in Cr:Ga2Se3/Si E. N. Yitamben,1,  

E-Print Network [OSTI]

Room Temperature, Intrinsic Vacancy Mediated Ferromagnetism in Cr:Ga2Se3/Si E. N. Yitamben,1, T. C of 4 µB/Cr. The intrinsic- vacancy structure of defected-zinc-blende -Ga2Se3 enables Cr incorporation, as well as strong overlap between Cr 3d states and the Se 4p states lining the intrinsic vacancy rows, ob

Olmstead, Marjorie

102

Line coupling effects in the isotropic Raman spectra of N{sub 2}: A quantum calculation at room temperature  

SciTech Connect (OSTI)

We present quantum calculations of the relaxation matrix for the Q branch of N{sub 2} at room temperature using a recently proposed N{sub 2}-N{sub 2} rigid rotor potential. Close coupling calculations were complemented by coupled states studies at high energies and provide about 10?200 two-body state-to state cross sections from which the needed one-body cross-sections may be obtained. For such temperatures, convergence has to be thoroughly analyzed since such conditions are close to the limit of current computational feasibility. This has been done using complementary calculations based on the energy corrected sudden formalism. Agreement of these quantum predictions with experimental data is good, but the main goal of this work is to provide a benchmark relaxation matrix for testing more approximate methods which remain of a great utility for complex molecular systems at room (and higher) temperatures.

Thibault, Franck, E-mail: franck.thibault@univ-rennes1.fr [Institut de Physique de Rennes, UMR CNRS 6251, Université de Rennes I, Campus de Beaulieu, Bât. 11B, F-35042 Rennes (France)] [Institut de Physique de Rennes, UMR CNRS 6251, Université de Rennes I, Campus de Beaulieu, Bât. 11B, F-35042 Rennes (France); Boulet, Christian [Institut des Sciences Moléculaires d’Orsay, UMR CNRS 8214, Université Paris-Sud 11, Campus d’Orsay, Bât. 350, F-91405 Orsay (France)] [Institut des Sciences Moléculaires d’Orsay, UMR CNRS 8214, Université Paris-Sud 11, Campus d’Orsay, Bât. 350, F-91405 Orsay (France); Ma, Qiancheng [NASA/Goddard Institute for Space Studies and Department of Applied Physics and Applied Mathematics, Columbia University 2880 Broadway, New York, New York 10025 (United States)] [NASA/Goddard Institute for Space Studies and Department of Applied Physics and Applied Mathematics, Columbia University 2880 Broadway, New York, New York 10025 (United States)

2014-01-28T23:59:59.000Z

103

Symmetries and multiferroic properties of novel room-temperature magnetoelectrics: Lead iron tantalate – lead zirconate titanate (PFT/PZT)  

Science Journals Connector (OSTI)

Mixing 60-70% lead zirconate titanate with 40-30% lead iron tantalate produces a single-phase low-loss room-temperature multiferroic with magnetoelectric coupling: (PbZr0.53Ti0.47O3) (1-x)- (PbFe0.5Ta0.5O3)x. The present study combines x-ray scattering magnetic and polarization hysteresis in both phases plus a second-order dielectric divergence (to epsilon = 6000 at 475 K for 0.4 PFT; to 4000 at 520 K for 0.3 PFT) for an unambiguous assignment as a C2v-C4v (Pmm2-P4mm) transition. The material exhibits square saturated magnetic hysteresis loops with 0.1 emu/g at 295 K and saturation polarization Pr = 25 ?C/cm2 which actually increases (to 40 ?C/cm2) in the high-T tetragonal phase representing an exciting new room temperature oxide multiferroic to compete with BiFeO3. Additional transitions at high temperatures (cubic at T>1300 K) and low temperatures (rhombohedral or monoclinic at T<250 K) are found. These are the lowest-loss room-temperature multiferroics known which is a great advantage for magnetoelectric devices.

Dilsom A. Sanchez; N. Ortega; Ashok Kumar; R. Roque-Malherbe; R. Polanco; J. F. Scott; Ram S. Katiyar

2011-01-01T23:59:59.000Z

104

Determination of Thermal Diffusivities, Thermal Conductivities, and Sound Speeds of Room-Temperature Ionic Liquids by the Transient Grating Technique  

E-Print Network [OSTI]

properties, which make them suitable not only as green solvents but also as high-performance fluids for use as a "green" recyclable alternative to the volatile organic compounds that are traditionally used as industrial solvents. In the laboratory, RTILs have successfully been used in a broad spectrum of applications

Reid, Scott A.

105

Room Temperature Ionic Liquids as Replacements for Traditional Organic Solvents and Their Applications Towards “Green Chemistry” in Separation Processes  

Science Journals Connector (OSTI)

The full effect of Green Chemistry will be realized when the words ... industry, one of the major goals of “green” chemistry is to prevent pollution and waste ... In light of the vast usage of organic solvents in...

Ann E. Visser; Richard P. Swatloski…

2002-01-01T23:59:59.000Z

106

Low and Room Temperature X-ray Structures of Protein Kinase A Ternary Complexes Shed New Light on Its Activity  

SciTech Connect (OSTI)

Posttranslational protein phosphorylation by protein kinase A (PKA) is a ubiquitous signaling mechanism which regulates many cellular processes. A low temperature X-ray structure of the PKA catalytic subunit (PKAc) ternary complex with ATP and a 20-residue peptidic inhibitor (IP20) at the physiological Mg2+ concentration of < 0.5mM revealed a single metal ion in the active site. The lack of a second metal in the low-temperature LT-PKAc-MgATP-IP20 renders the and phosphoryl groups of ATP to be very flexibile, with high thermal B-factors. Thus, the second metal is crucial for tight positioning of the terminal phosphoryl for transfer to a substrate, as demonstrated by comparison of the former structure with LT-PKAc- Mg2ATP-IP20 complex. In addition to the kinase activity, PKAc is also able to slowly catalyze the hydrolysis of ATP using a water molecule as a substrate. We found that at room temperature under X-ray irradiation ATP can be readily and completely hydrolyzed into ATP and a free phosphate ion in the crystals of the ternary complex LT-PKAc- Mg2ATP-IP20. The cleavage of ATP may be aided by X-ray-born free hydroxyl radicals, a very reactive chemical species, that move quickly through the crystal at room temperature. The phosphate anion is clearly visible in the electron density maps; it remains in the active site, but slides about 2 from its position in ATP toward Ala21 of IP20 that mimics the phosphorylation site. The phosphate, thus, pushes the peptidic inhibitor away from the product ADP, while resulting in dramatic conformational changes of IP20 terminal residues 24 and 25. X-ray structures of PKAc in complex with non-hydrolyzable ATP analog, AMPPNP, at both room and low temperatures demonstrated no temperature effects on the conformation and position of IP20.

Fisher, Zoe [Los Alamos National Laboratory (LANL); Hanson, Leif [University of Toledo, Toledo, OH; Kovalevsky, Andrey [Los Alamos National Laboratory (LANL); Langan, Paul [ORNL

2012-01-01T23:59:59.000Z

107

FINAL REPORT: Room Temperature Hydrogen Storage in Nano-Confined Liquids  

SciTech Connect (OSTI)

DOE continues to seek solid-state hydrogen storage materials with hydrogen densities of ?6 wt% and ?50 g/L that can deliver hydrogen and be recharged at room temperature and moderate pressures enabling widespread use in transportation applications. Meanwhile, development including vehicle engineering and delivery infrastructure continues for compressed-gas hydrogen storage systems. Although compressed gas storage avoids the materials-based issues associated with solid-state storage, achieving acceptable volumetric densities has been a persistent challenge. This project examined the possibility of developing storage materials that would be compatible with compressed gas storage technology based on enhanced hydrogen solubility in nano-confined liquid solvents. These materials would store hydrogen in molecular form eliminating many limitations of current solid-state materials while increasing the volumetric capacity of compressed hydrogen storage vessels. Experimental methods were developed to study hydrogen solubility in nano-confined liquids. These methods included 1) fabrication of composites comprised of volatile liquid solvents for hydrogen confined within the nano-sized pore volume of nanoporous scaffolds and 2) measuring the hydrogen uptake capacity of these composites without altering the composite composition. The hydrogen storage capacities of these nano-confined solvent/scaffold composites were compared with bulk solvents and with empty scaffolds. The solvents and scaffolds were varied to optimize the enhancement in hydrogen solubility that accompanies confinement of the solvent. In addition, computational simulations were performed to study the molecular-scale structure of liquid solvent when confined within an atomically realistic nano-sized pore of a model scaffold. Confined solvent was compared with similar simulations of bulk solvent. The results from the simulations were used to formulate a mechanism for the enhanced solubility and to guide the experiments. Overall, the combined experimental measurements and simulations indicate that hydrogen storage based on enhanced solubility in nano-confined liquids is unlikely to meet the storage densities required for practical use. Only low gravimetric capacities of < 0.5 wt% were achieved. More importantly, solvent filled scaffolds had lower volumetric capacities than corresponding empty scaffolds. Nevertheless, several of the composites measured did show significant (>~ 5x) enhanced hydrogen solubility relative to bulk solvent solubility, when the hydrogen capacity was attributed only to dissolution in the confined solvent. However, when the hydrogen capacity was compared to an empty scaffold that is known to store hydrogen by surface adsorption on the scaffold walls, including the solvent always reduced the hydrogen capacity. For the best composites, this reduction relative to an empty scaffold was ~30%; for the worst it was ~90%. The highest capacities were obtained with the largest solvent molecules and with scaffolds containing 3- dimensionally confined pore geometries. The simulations suggested that the capacity of the composites originated from hydrogen adsorption on the scaffold pore walls at sites not occupied by solvent molecules. Although liquid solvent filled the pores, not all of the adsorption sites on the pore walls were occupied due to restricted motion of the solvent molecules within the confined pore space.

VAJO, JOHN

2014-06-12T23:59:59.000Z

108

Regeneration tests of a room temperature magnetic refrigerator and heat pump  

E-Print Network [OSTI]

A magnetic heat pump apparatus consisting of a solid magnetic refrigerant, gadolinium, and a liquid regenerator column of ethanol and water has been tested. Utilizing a 7T field, it produced a maximum temperature span of 80 K, and in separate tests, a lowest temperature of 241 K and a highest temperature of 328 K. Thermocouples, placed at intervals along the regenerator tube, permitted measurement of the temperature distribution in the regenerator fluid. No attempt was made to extract refrigeration from the device, but analysis of the temperature distributions shows that 34 watts of refrigeration was produced.

Brown, G V

2014-01-01T23:59:59.000Z

109

Room-temperature implementation of the Deutsch-Jozsa algorithm with a single electronic spin in diamond  

E-Print Network [OSTI]

The nitrogen-vacancy defect center (NV center) is a promising candidate for quantum information processing due to the possibility of coherent manipulation of individual spins in the absence of the cryogenic requirement. We report a room-temperature implementation of the Deutsch-Jozsa algorithm by encoding both a qubit and an auxiliary state in the electron spin of a single NV center. By thus exploiting the specific S=1 character of the spin system, we demonstrate how even scarce quantum resources can be used for test-bed experiments on the way towards a large-scale quantum computing architecture.

Fazhan Shi; Xing Rong; Nanyang Xu; Ya Wang; Jie Wu; Bo Chong; Xinhua Peng; Juliane Kniepert; Rolf-Simon Schoenfeld; Wolfgang Harneit; Mang Feng; Jiangfeng Du

2010-02-12T23:59:59.000Z

110

Thin-film transistors based on p-type Cu{sub 2}O thin films produced at room temperature  

SciTech Connect (OSTI)

Copper oxide (Cu{sub 2}O) thin films were used to produce bottom gate p-type transparent thin-film transistors (TFTs). Cu{sub 2}O was deposited by reactive rf magnetron sputtering at room temperature and the films exhibit a polycrystalline structure with a strongest orientation along (111) plane. The TFTs exhibit improved electrical performance such as a field-effect mobility of 3.9 cm{sup 2}/V s and an on/off ratio of 2x10{sup 2}.

Fortunato, Elvira; Figueiredo, Vitor; Barquinha, Pedro; Elamurugu, Elangovan; Goncalves, Goncalo; Martins, Rodrigo [Departamento de Ciencia dos Materiais, CENIMAT/I3N, Faculdade de Ciencias e Tecnologia, FCT, Universidade Nova de Lisboa and CEMOP-UNINOVA, 2829-516 Caparica (Portugal); Barros, Raquel [Departamento de Ciencia dos Materiais, CENIMAT/I3N, Faculdade de Ciencias e Tecnologia, FCT, Universidade Nova de Lisboa and CEMOP-UNINOVA, 2829-516 Caparica (Portugal); Materiais Avancados, INNOVNANO, SA, 7600-095 Aljustrel (Portugal); Park, Sang-Hee Ko; Hwang, Chi-Sun [Electronic and Telecommunications Research Institute, 138 Gajeongro, Yuseong-gu, Daejeon, 305-700 (Korea, Republic of)

2010-05-10T23:59:59.000Z

111

Peculiarly strong room-temperature ferromagnetism from low Mn-doping in ZnO grown by molecular beam epitaxy  

SciTech Connect (OSTI)

Strong room-temperature ferromagnetism is demonstrated in single crystalline Mn-doped ZnO thin films grown by molecular beam epitaxy. Very low Mn doping concentration is investigated, and the measured magnetic moment is much larger than what is expected for an isolated ion based on Hund's rules. The ferromagnetic behavior evolves with Mn concentration. Both magnetic anisotropy and anomalous Hall effect confirm the intrinsic nature of ferromagnetism. While the Mn dopant plays a crucial role, another entity in the system is needed to explain the observed large magnetic moments.

Zuo Zheng; Morshed, Muhammad; Liu Jianlin [Quantum Structures Laboratory, Department of Electrical Engineering, University of California at Riverside, Riverside, California 92521 (United States); Beyermann, W. P. [Department of Physics and Astronomy, University of California at Riverside, Riverside, California 92521 (United States); Zheng Jianguo [Laboratory for Electron and X-ray Instrumentation, California Institute for Telecommunications and Information Technology, University of California Irvine, Irvine, California 92697 (United States); Xin Yan [NHMFL, Florida State University, 1800 E. Paul Dirac Dr., Tallahassee, FL 32310-3706 (United States)

2013-03-15T23:59:59.000Z

112

Room temperature spontaneous emission enhancement from quantum dots in photonic crystal slab cavities in the telecommunications C-band  

E-Print Network [OSTI]

We report on the control of the spontaneous emission dynamics from InAsP self-assembled quantum dots emitting in the telecommunications C-band and weakly coupled to the mode of a double heterostructure cavity etched on a suspended InP membrane at room temperature. The quality factor of the cavity mode is 44x10^3 with an ultra-low modal volume of the order of 1.2 lambda/n)^3, inducing an enhancement of the spontaneous emission rate of up a factor of 2.8 at 300 K.

Richard Hostein; Rémy Braive; Matthieu Larqué; Ko-Hsin Lee; Anne Talneau; Luc Le Gratiet; Isabelle Robert-Philip; Isabelle Sagnes; Alexios Beveratos

2009-03-25T23:59:59.000Z

113

Room temperature strain rate sensitivity in precursor derived HfO{sub 2}/Si-C-N(O) ceramic nanocomposites  

SciTech Connect (OSTI)

Investigation on the room temperature strain rate sensitivity using depth sensing nanoindentation is carried out on precursor derived HfO{sub 2}/Si-C-N(O) ceramic nanocomposite sintered using pulsed electric current sintering. Using constant load method the strain rate sensitivity values are estimated. Lower strain rate sensitivity of ? 3.7 × 10{sup ?3} is observed and the limited strain rate sensitivity of these ceramic nanocomposites is explained in terms of cluster model. It is concluded that presence of amorphous Si-C-N(O) clusters are responsible for the limited flowability in these ceramics.

Sujith, Ravindran; Kumar, Ravi, E-mail: nvrk@iitm.ac.in [Materials Processing Section, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai-600036, India. (India)] [Materials Processing Section, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai-600036, India. (India)

2014-01-15T23:59:59.000Z

114

Room temperature electron transport properties of single C{sub 60} studied using scanning tunneling microscope and reak junctions.  

SciTech Connect (OSTI)

We report the measurements of the electron transport of an individual C{sub 60} molecule through the combination of two experimental efforts. The nanometer-sized junctions were fabricated using electromigration combined with electron beam lithography and shadow effect evaporation. We performed the scanning tunneling microscopy/spectroscopy measurements of dispersed C{sub 60} molecules which were deposited on a highly ordered pyrolytic graphite substrate. The single electron tunneling through a single C{sub 60} molecule due to the Coulomb blockage effect is observed at room temperature.

Cheng, R.; Carvell, J.; Fradin, F. Y.; Indiana Univ.-Purdue Univ. at Indianapolis

2010-09-15T23:59:59.000Z

115

Room Temperature Copper(II)-Catalyzed Oxidative Cyclization of Enamides to 2,5-Disubstituted Oxazoles via Vinylic C–H Functionalization  

E-Print Network [OSTI]

A copper(II)-catalyzed oxidative cyclization of enamides to oxazoles via vinylic C–H bond functionalization at room temperature is described. Various 2,5-disubstituted oxazoles bearing aryl, vinyl, alkyl, and heteroaryl ...

Cheung, Chi Wai

116

Room-temperature high radio-frequency source power effects on silicon nitride films deposited by using a plasma-enhanced chemical vapor deposition  

Science Journals Connector (OSTI)

Silicon nitride films were deposited at room temperature using a plasma-enhanced chemical vapor deposition system. In this study, the effects of radio frequency (RF) source power ranging from 200 W to ... charact...

Byungwhan Kim; Suyeon Kim

2008-10-01T23:59:59.000Z

117

Initial proof-of-principle for near room temperature Xe and Kr separation from air with MOFs  

SciTech Connect (OSTI)

Materials were developed and tested in support of the U.S. Department of Energy, Office of Nuclear Energy, Fuel Cycle Technology Separations and Waste Forms Campaign. Specifically, materials are being developed for the removal of Xenon and krypton from gaseous products of nuclear fuel reprocessing unit operations. During FY 2012, Three Metal organic framework (MOF) structures were investigated in greater detail for the removal and storage of Xe and Kr from air at room temperature. Our breakthrough measurements on Nickel based MOF could capture and separate parts per million levels of Xe from Air (40 ppm Kr, 78% N2, 21% O2, 0.9% Ar, 0.03% CO2). Similarly, the selectivity can be changed from Xe > Kr to Xe < Kr simply by changing the temperature in another MOF. Also for the first time we estimated the cost of the metal organic frameworks in bulk.

Thallapally, Praveen K.; Strachan, Denis M.

2012-06-06T23:59:59.000Z

118

Highly entangled photons and rapidly responding polarization qubit phase gates in a room-temperature active Raman gain medium  

SciTech Connect (OSTI)

We present a scheme for obtaining entangled photons and quantum phase gates in a room-temperature four-state tripod-type atomic system with two-mode active Raman gain (ARG). We analyze the linear and nonlinear optical responses of this ARG system and show that the scheme is fundamentally different from those based on electromagnetically induced transparency and hence can avoid significant probe-field absorption as well as a temperature-related Doppler effect. We demonstrate that highly entangled photon pairs can be produced and rapidly responding polarization qubit phase gates can be constructed based on the unique features of the enhanced cross-phase-modulation and superluminal probe-field propagation of the system.

Hang Chao [State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062 (China); Centro de Fisica Teorica e Computacional, Universidade de Lisbon, Complex Interdisciplinary, Avenida Professor Gama Pinto 2, Lisbon P-1649-003 (Portugal); Huang Guoxiang [State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062 (China); Institute of Nonlinear Physics, Zhejiang Normal University, Jinhua, Zhejiang 321004 (China)

2010-11-15T23:59:59.000Z

119

Multilayered YSZ/GZO films with greatly enhanced ionic conduction...  

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

YSZGZO films with greatly enhanced ionic conduction for low temperature solid oxide fuel cells. Multilayered YSZGZO films with greatly enhanced ionic conduction for...

120

Radiation Stability of Cations in Ionic Liquids. 2. Charge Delocalization  

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

Stability of Cations in Ionic Liquids. 2. Improved Radiation Stability of Cations in Ionic Liquids. 2. Improved Radiation Resistance Through Charge Delocalization in 1-Benzylpyridinium Ilya A. Shkrob, Timothy W. Marin, Jasmine L. Hatcher, Andrew R. Cook, Tomasz Szreder and James F. Wishart J. Phys. Chem. B 117, Just Accepted (2013). [Find paper at ACS Publications]. Abstract: Hydrophobic room-temperature ionic liquids (ILs) hold promise as replacements for molecular diluents for processing of used nuclear fuel as well as for the development of alternative separations processes, provided that the solvent can be made resistant to ionizing radiation. We demonstrate that 1-benzylpyridinium cations are uniquely suited as radiation resistant cations due to the occurrence of charge delocalization both in their reduced and oxidized form in the ILs. It is suggested that

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121

Deformation twinning in nanocrystalline copper at room temperature and low strain rate  

E-Print Network [OSTI]

Federation Received 23 September 2003; accepted 28 November 2003 The grain-size effect on deformation,14 except at very high strain rate15,16 and/or low temperature.17 However, the grain-size effect is not so hand, it has been well known that the HP relation- ship fails in nc materials.4,5 These literature

Zhu, Yuntian T.

122

Low refractive index silicon oxide coatings at room temperature using atmospheric-pressure very high-frequency plasma  

Science Journals Connector (OSTI)

Low refractive index silicon oxide films were deposited using atmospheric-pressure He/SiH4/CO2 plasma excited by a 150-MHz very high-frequency power. Significant increase in deposition rate at room temperature could prevent the formation of dense SiO2 network, decreasing refractive index of the resulting film effectively. As a result, a silicon oxide film with the lowest refractive index, n = 1.24 at 632.8 nm, was obtained with a very high deposition rate of 235 nm/s. The reflectance and transmittance spectra showed that the low refractive index film functioned as a quarter-wave anti-reflection coating of a glass substrate.

H. Kakiuchi; H. Ohmi; Y. Yamaguchi; K. Nakamura; K. Yasutake

2010-01-01T23:59:59.000Z

123

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature  

SciTech Connect (OSTI)

In this work, we investigate the processes leading to the room-temperature growth of silicon carbide thin films by supersonic molecular beam epitaxy technique. We present experimental data showing that the collision of fullerene on a silicon surface induces strong chemical-physical perturbations and, for sufficient velocity, disruption of molecular bonds, and cage breaking with formation of nanostructures with different stoichiometric character. We show that in these out-of-equilibrium conditions, it is necessary to go beyond the standard implementations of density functional theory, as ab initio methods based on the Born-Oppenheimer approximation fail to capture the excited-state dynamics. In particular, we analyse the Si-C{sub 60} collision within the non-adiabatic nuclear dynamics framework, where stochastic hops occur between adiabatic surfaces calculated with time-dependent density functional theory. This theoretical description of the C{sub 60} impact on the Si surface is in good agreement with our experimental findings.

Taioli, Simone [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Physics, University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (Italy); Department of Chemistry, University of Bologna, Bologna (Italy); Garberoglio, Giovanni [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Simonucci, Stefano [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (Italy); Department of Physics, University of Camerino, Camerino (Italy); Beccara, Silvio a [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Physics, University of Trento, Trento (Italy); Aversa, Lucrezia [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Trento (Italy); Nardi, Marco [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Trento (Italy); Institut fuer Physik, Humboldt-Universitaet zu Berlin, Berlin (Germany); Verucchi, Roberto [Institute of Materials for Electronics and Magnetism, FBK-CNR, Trento (Italy); Iannotta, Salvatore [Institute of Materials for Electronics and Magnetism, IMEM-CNR, Parma (Italy); Dapor, Maurizio [Interdisciplinary Laboratory for Computational Science, FBK-Center for Materials and Microsystems and University of Trento, Trento (Italy); Department of Materials Engineering and Industrial Technologies, University of Trento, Trento (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Padova (Italy); and others

2013-01-28T23:59:59.000Z

124

Deformation of depleted uranium ? 0.78 Ti under shock compression to 11.0 GPa at room temperature  

Science Journals Connector (OSTI)

The present work on depleted uranium alloyed with 0.78% titanium by weight (i.e. U?0.8 Ti) describes the nature of deformation it undergoes when subjected to shock compression at room temperature. The principal results emerging out of the present work are: (1) The stress limits of elastic deformation are dependent on the thickness of U?0.8Ti. The stress limit decreases from over 3.0 GPa at the impact surface to 1.2 GPa at a depth of 9 mm in U?0.8 Ti; (2) The lower limit of the stress agrees with the static yield stress in U?0.8 Ti; (3) Above the elastic stress limit the deformation of U?0.8 Ti proceeds in a manner of the ideal plastic solid; and (4) The pressure derivative of Lame’s parameter of U?0.8 Ti is estimated to be 3.8.

Dattatraya P. Dandekar; Anthony G. Martin; John V. Kelley

1980-01-01T23:59:59.000Z

125

Room temperature continuous wave InGaAsN quantum well vertical cavity lasers emitting at 1.3 um  

SciTech Connect (OSTI)

Selectively oxidized vertical cavity lasers emitting at 1294 nm using InGaAsN quantum wells are reported for the first time which operate continuous wave at and above room temperature. The lasers employ two n-type Al{sub 0.94}Ga{sub 0.06}As/GaAs distributed Bragg reflectors each with a selectively oxidized current aperture adjacent to the optical cavity, and the top output mirror contains a tunnel junction to inject holes into the active region. Continuous wave single mode lasing is observed up to 55 C. These lasers exhibit the longest wavelength reported to date for vertical cavity surface emitting lasers grown on GaAs substrates.

CHOQUETTE,KENT D.; KLEM,JOHN F.; FISCHER,ARTHUR J.; SPAHN,OLGA B.; ALLERMAN,ANDREW A.; FRITZ,IAN J.; KURTZ,STEVEN R.; BREILAND,WILLIAM G.; SIEG,ROBERT M.; GEIB,KENT M.; SCOTT,J.W.; NAONE,R.L.

2000-06-05T23:59:59.000Z

126

Thin film growth and characterization of Potassium-Tantalate-Niobate room temperature ferroelectric  

E-Print Network [OSTI]

is al&says present in the solution due to additiou ol &cscess solute &naterial or due ]o cooliug ol the solutiou belov' its liquidus tempera]ure. Spon], aueous uuclea], ion ac], iva]es gro&vth. 3. Sl, ep-cooled gro&vth: The gro&vth occurs at a..., cvlindrica] sl eel rod ivas iiiscrtcd which ivould serve as flic seai foi I lie alumina. crucible. An S-type (Pt. ? 10'zh Pt/Ri&) thermo& ouple inserted throuzli this rod gives Ihe temperature at the bottom of the crucible. 39 The furnace was modified...

Muntha, Nageswara Rao Venkat

1995-01-01T23:59:59.000Z

127

Photothermal and thermo-refractive effects in high reflectivity mirrors at room and cryogenic temperature  

E-Print Network [OSTI]

Increasing requirements in the sensitivity of interferometric measurements is a common feature of several research fields, from gravitational wave detection to quantum optics. This motivates refined studies of high reflectivity mirrors and of noise sources that are tightly related to their structure. In this work we present an experimental characterization of photothermal and thermo-refractive effects in high reflectivity mirrors, i.e., of the variations in the position of their effective reflection plane due to weak residual power absorption. The measurements are performed by modulating the impinging power in the range 10 Hz $\\div$ 100 kHz. The experimental results are compared with an expressly derived theoretical model in order to fully understand the phenomena and exploit them to extract useful effective thermo-mechanical parameters of the coating. The measurements are extended at cryogenic temperature, where most high sensitivity experiments are performed (or planned in future versions) and where characterizations of dielectric film coatings are still poor.

Alessandro Farsi; Mario Siciliani de Cumis; Francesco Marino; Francesco Marin

2011-09-21T23:59:59.000Z

128

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

129

Strong room-temperature ferromagnetism of high-quality lightly Mn-doped ZnO grown by molecular beam epitaxy  

SciTech Connect (OSTI)

Strong room-temperature ferromagnetism is demonstrated in single crystalline Mn-doped ZnO grown by molecular beam epitaxy. With a low Mn concentration of 2 Multiplication-Sign 10{sup 19} cm{sup -3}, Mn-doped ZnO films exhibited room-temperature ferromagnetism with a coercivity field larger than 200 Oe, a large saturation moment of 6 {mu}{sub B}/ion, and a large residue moment that is {approx}70% of the saturation magnetization. Isolated ions with long range carrier mediated spin-spin coupling may be responsible for the intrinsic ferromagnetism.

Zuo Zheng; Zhou Huimei; Olmedo, Mario J.; Kong Jieying; Liu Jianlin [Quantum Structures Laboratory, Department of Electrical Engineering, University of California - Riverside, Riverside, California 92521 (United States); Beyermann, Ward P. [Department of Physics and Astronomy, University of California - Riverside, Riverside, California 92521 (United States); Zheng Jianguo [Laboratory for Electron and X-ray Instrumentation, California Institute for Telecommunications and Information Technology, University of California - Irvine, Irvine, California 92697 (United States); Xin Yan [NHMFL, Florida State University, 1800 E. Paul Dirac Dr., Tallahassee, Florida 32310-3706 (United States)

2012-09-01T23:59:59.000Z

130

Crosslinked polymer gel electrolytes based on polyethylene glycol methacrylate and ionic liquid for lithium battery applications  

SciTech Connect (OSTI)

Gel polymer electrolytes were synthesized by copolymerization polyethylene glycol methyl ether methacrylate with polyethylene glycol dimethacrylate in the presence of a room temperature ionic liquid, methylpropylpyrrolidinium bis(trifluoromethanesulfonyl)imide (MPPY TFSI). The physical properties of gel polymer electrolytes were characterized by thermal analysis, impedance spectroscopy, and electrochemical tests. The ionic conductivities of the gel polymer electrolytes increased linearly with the amount of MPPY TFSI and were mainly attributed to the increased ion mobility as evidenced by the decreased glass transition temperatures. Li||LiFePO4 cells were assembled using the gel polymer electrolytes containing 80 wt% MPPY TFSI via an in situ polymerization method. A reversible cell capacity of 90 mAh g 1 was maintained under the current density of C/10 at room temperature, which was increased to 130 mAh g 1 by using a thinner membrane and cycling at 50 C.

Liao, Chen [ORNL; Sun, Xiao-Guang [ORNL; Dai, Sheng [ORNL

2013-01-01T23:59:59.000Z

131

High-heat-load synchrotron tests of room-temperature, silicon crystal monochromators at the CHESS F-2 wiggler station  

SciTech Connect (OSTI)

This note summarizes the results of the single crystal monochromator high-heat-load tests performed at the CHESS F-2 wiggler station. The results from two different cooling geometries are presented: (1) the ``pin-post`` crystal and (2) the ``criss-cross`` crystal. The data presented were taken in August 1993 (water-cooled pin-post) and in April 1995 (water- and gallium-cooled pin-post crystal and gallium-cooled criss-cross crystal). The motivation for trying these cooling (or heat exchanger) geometries is to improve the heat transfer efficiency over that of the conventional slotted crystals. Calculations suggest that the pin-post or the microchannel design can significantly improve the thermal performance of the crystal. The pin-post crystal used here was fabricated by Rocketdyne Albuquerque Operations. From the performance of the conventional slotted crystals, it was thought that increased turbulence in the flow pattern may also enhance the heat transfer. The criss-cross crystal was a simple attempt to achieve the increased flow turbulence. The criss-cross crystal was partly fabricated in-house (cutting, etching and polishing) and bonded by RAO. Finally, a performance comparison among all the different room temperature silicon monochromators that have been tested by the APS is presented. The data includes measurements with the slotted crystal and the core-drilled crystals. Altogether, the data presented here were taken at the CHESS F-2 wiggler station between 1991 and 1995.

Lee, W.K.; Fernandez, P.B.; Graber, T.; Assoufid, L.

1995-09-08T23:59:59.000Z

132

Thermal ionization induced metal-semiconductor transition and room temperature ferromagnetism in trivalent doped ZnO codoped with lithium  

SciTech Connect (OSTI)

Thermal ionization induced metallic to semiconductor (MST) transition occurring at 460?K for Zn{sub 0.97}Al{sub 0.03}O, 463?K for Zn{sub 0.94}Al{sub 0.03}Li{sub 0.03}O, and 503?K for Zn{sub 0.91}Al{sub 0.03}Li{sub 0.03}Mn{sub 0.03}O has been found in the sol-gel synthesized (using hexamethylenetetramine), trivalent doped (Al, Mn) ZnO codoped with lithium. Increase in the thermally ionized carrier concentration due to Al doping is responsible for near band edge (NBE) peak shift causing Fermi level to move into conduction band making it metallic consistent with resistivity results. Free carrier (thermally activated) neutralization with ionized donor is responsible for semiconducting nature, which is supported from the free carrier screening produced energy shift in the NBE of photoluminescence peak. Furthermore, independently band gap shrinkage is also obtained from UV-Visible studies confirming localization induced MST. An anti-correlation is found between defect density (DLE) and room temperature ferromagnetism (RTFM) indicating intrinsic defects are not directly responsible for RTFM.

Sivagamasundari, A.; Chandrasekar, S.; Pugaze, R.; Kannan, R., E-mail: kannan@pec.edu [Department of Physics, Pondicherry Engineering College, Puducherry 605 014 (India); Rajagopan, S. [Department of Chemistry, Pondicherry Engineering College, Puducherry 605 014 (India)

2014-03-07T23:59:59.000Z

133

Room-temperature optical absorption in the InAs/GaAs quantum-dot superlattice under an electric field  

SciTech Connect (OSTI)

Electroluminescence and absorption spectra of a ten-layer InAs/GaAs quantum dot (QD) superlattice built in a two-section laser with sections of equal length is experimentally studied at room temperature. The thickness of the GaAs spacer layer between InAs QD layers, determined by transmission electron microscopy, is {approx}6 nm. In contrast to tunnel-coupled QDs, QD superlattices amplify the optical polarization intensity and waveguide absorption of the TM mode in comparison with the TE mode. It is found that variations in the multimodal periodic spectrum of differential absorption of the QD superlattice structure are strongly linearly dependent on the applied electric field. Differential absorption spectra exhibit the Wannier-Stark effect in the InAs/GaAs QD superlattice, in which, in the presence of an external electric field, coupling of wave functions of miniband electron states is suppressed and a series of discrete levels called the Wannier-Stark ladder states are formed.

Sobolev, M. M., E-mail: m.sobolev@mail.ioffe.ru; Gadzhiev, I. M.; Bakshaev, I. O.; Nevedomskii, V. N.; Buyalo, M. S.; Zadiranov, Yu. M.; Portnoi, E. L. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

2011-08-15T23:59:59.000Z

134

Room temperature reduction of multilayer graphene oxide film on a copper substrate: Penetration and participation of coper phase in redox reactions.  

SciTech Connect (OSTI)

A self-reduction of graphene oxide (GO) at room temperature after prolonged storage on a copper substrate is evidenced by decrease of oxygen content and a dramatic, 6 orders in magnitude, increase in dc conductivity. Experiments revealed that the stored GO film contains copper hydroxide phase embedded in the reduced GO structure.

Voylov, Dmitry N [ORNL] [ORNL; Agapov, Alexander L [ORNL] [ORNL; Sokolov, Alexei P [ORNL] [ORNL; Shulga, Y.M. [Institute of Problems of Chemical Physics, Russian Ac. Sci, Chernogolovka, Russia] [Institute of Problems of Chemical Physics, Russian Ac. Sci, Chernogolovka, Russia; Arbuzov, Artem [Institute of Problems of Chemical Physics, Russian Ac. Sci, Chernogolovka, Russia] [Institute of Problems of Chemical Physics, Russian Ac. Sci, Chernogolovka, Russia

2014-01-01T23:59:59.000Z

135

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136

Above room-temperature operation of InAs/AlGaSb superlattice quantum cascade lasers emitting at 12 {mu}m  

SciTech Connect (OSTI)

The authors report on above-room-temperature operation of InAs/AlGaSb quantum cascade lasers emitting at 12 {mu}m. The laser structures are grown on a n-InAs (100) substrate using solid-source molecular beam epitaxy. An InAs/AlGaSb superlattice is used as an active part and an InAs double plasmon waveguide is used for optical confinement. Results show that increased doping concentration in the injection part of the active region expands the current operation range of the devices, allowing laser operation at and above room temperature. The observed threshold current density is 4.0 kA/cm{sup 2} at 300 K; the maximum operation temperature is 340 K.

Ohtani, K.; Moriyasu, Y.; Ohnishi, H.; Ohno, H. [Laboratory for Nanoelectronics and Semiconductor Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577 (Japan)

2007-06-25T23:59:59.000Z

137

Neutron Scattering Methodology for Absolute Measurement of Room-Temperature Hydrogen Storage Capacity and Evidence for Spillover Effect in a Pt-Doped Activated Carbon  

Science Journals Connector (OSTI)

Neutron Scattering Methodology for Absolute Measurement of Room-Temperature Hydrogen Storage Capacity and Evidence for Spillover Effect in a Pt-Doped Activated Carbon ... A neutron scattering methodology is proposed to simultaneously determine the total hydrogen adsorption, the excess hydrogen adsorption, and hydrogen gas confined in the porous sample. ... It can be combined with an in situ small-angle neutron scattering to study the hydrogen spillover effect in the kinetic adsorption process. ...

Cheng-Si Tsao; Yun Liu; Mingda Li; Yang Zhang; Juscelino B. Leao; Hua-Wen Chang; Ming-Sheng Yu; Sow-Hsin Chen

2010-04-29T23:59:59.000Z

138

Origin of room temperature d{sup 0} ferromagnetism and characteristic photoluminescence in pristine SnO{sub 2} nanowires: A correlation  

SciTech Connect (OSTI)

Arrays of SnO{sub 2} nanowires are fabricated by employing a wet chemical template assisted sol-gel route using ordered nanoporous anodic aluminium oxide as the host. The origin of room temperature d{sup 0} ferromagnetism in pristine polycrystalline SnO{sub 2} nanowires is investigated by correlating photoluminescence and electron paramagnetic resonance (EPR) studies. It has been found that the naturally grown structural defects of oxygen vacancies namely singly ionised oxygen vacancy (V{sub O}{sup {center_dot}}) clusters induce the characteristic photoluminescence and contribute in ferromagnetism of pristine SnO{sub 2} nanowires at room temperature. The presence of the V{sub O}{sup {center_dot}} structural defects in the pure SnO{sub 2} nanowires is also assured by the EPR spectroscopy. Present study will help understand the puzzle about the unexpected magnetic phenomenon in these undoped wide band gap oxide semiconductors. Highlights: Black-Right-Pointing-Pointer SnO{sub 2} NWs are fabricated by wet chemical AAO template assisted route. Black-Right-Pointing-Pointer SnO{sub 2} NWs exhibit d{sup 0} ferromagnetism at room temperature. Black-Right-Pointing-Pointer Origin of ferromagnetism is correlated with photoluminescence and EPR studies. Black-Right-Pointing-Pointer Oxygen vacancy clusters are attributed to boost ferromagnetism in SnO{sub 2} NWs.

Khan, Gobinda Gopal, E-mail: gobinda@bose.res.in [Department of Material Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake City, Kolkata 700098, West Bengal (India); Ghosh, S.; Mandal, Kalyan [Department of Material Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake City, Kolkata 700098, West Bengal (India)

2012-02-15T23:59:59.000Z

139

Capacitive Energy Storage from - 50o to 100o Using an Ionic Liquid Electrolyte  

SciTech Connect (OSTI)

Relying on redox reactions, most batteries are limited in their ability to operate at very low or very high temperatures. While performance of electrochemical capacitors is less dependent on the temperature, present-day devices still cannot cover the entire range needed for automotive and electronics applications under a variety of environmental conditions. We show that the right combination of the exohedral nanostructured carbon (nanotubes and onions) electrode and a eutectic mixture of ionic liquids can dramatically extend the temperature range of electrical energy storage, thus defying the conventional wisdom that ionic liquids can only be used as electrolytes above room temperature. We demonstrate electrical double layer capacitors able to operate from 50 to 100 C over a wide voltage window (up to 3.7 V) and at very high charge/discharge rates of up to 20 V/s.

Lin, Rongying [Universite Paul Sabatier, Toulouse Cedex, France.; Taberna, Pierre-Louis [Universite Paul Sabatier, Toulouse Cedex, France.; Santini, Sebastien [SOLVIONIC Company, Toulouse, France; Presser, Volker [ORNL; Perez, Carlos R. [Drexel University; Malbosc, Francois [SOLVIONIC Company, Toulouse, France; Rupesinghe, Nalin L. [AIXTRON, Cambridge, UK; Teo, Kenneth B. K. [AIXTRON, Cambridge, UK; Gogotsi, Yury G. [Drexel University; Simon, Patrice [Universite Paul Sabatier, Toulouse Cedex, France.

2011-01-01T23:59:59.000Z

140

Solvation of fluoro and mixed fluoro/chloro complexes of EuIII the [BMI][PF6] room temperature ionic liquid. A theoretical studyw  

E-Print Network [OSTI]

and non-flammability, they appear as ``green solvents'' (see, however, ref. 4) for many applications, strontium and trivalent lanthanides Ln31 in RTILs, comparing the [EMI][TCA] and [BMI][PF6] solvents, both based on imidazolium cations.16­18 The former solvent is water miscible and can be used

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "room temperature ionic" from the National Library of EnergyBeta (NLEBeta).
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141

Dynamic Solvation in Room-Temperature Ionic Liquids P. K. Chowdhury, M. Halder, L. Sanders, T. Calhoun, J. L. Anderson, D. W. Armstrong,  

E-Print Network [OSTI]

. Calhoun, J. L. Anderson, D. W. Armstrong, X. Song, and J. W. Petrich* Department of Chemistry, Iowa State

Song, Xueyu

142

Thermochromic effect at room temperature of Sm{sub 0.5}Ca{sub 0.5}MnO{sub 3} thin films  

SciTech Connect (OSTI)

Sm{sub 0.5}Ca{sub 0.5}MnO{sub 3} thermochromic thin films were synthesized using dc reactive magnetron co-sputtering and subsequent annealing in air. The film structure was studied by x-ray diffraction analysis. To validate the thermochromic potentiality of Sm{sub 0.5}Ca{sub 0.5}MnO{sub 3}, electrical resistivity and infrared transmittance spectra were recorded for temperatures ranging from 77 K to 420 K. The temperature dependence of the optical band gap was estimated in the near infrared range. Upon heating, the optical transmission decreases in the infrared domain showing a thermochromic effect over a wide wavelength range at room temperature.

Boileau, A.; Capon, F.; Barrat, S.; Pierson, J. F. [Universite de Lorraine, Institut Jean Lamour, Departement CP2S, UMR CNRS 7198, Nancy, F-54042 (France); Laffez, P. [Groupe de Recherche Electronique, Materiaux, Acoustique, Nanoscience (GREMAN), Universite Francois Rabelais de Tours, UMR CNRS 7347, IUT de Blois, 15 rue de la Chocolaterie, Blois, F-41000 (France)

2012-06-01T23:59:59.000Z

143

Effects of air annealing on CdS quantum dots thin film grown at room temperature by CBD technique intended for photosensor applications  

SciTech Connect (OSTI)

Graphical abstract: The effect of different intensities (40, 60 100 and 200 W) of light on CdS quantum dots thin film annealed at 350 °C indicating enhancement in (a) photo-current and (b) photosensitivity. Highlights: ? The preparation of CdS nanodot thin film at room temperature by M-CBD technique. ? Study of air annealing on prepared CdS nanodots thin film. ? The optimized annealing temperature for CdS nanodot thin film is 350 °C. ? Modified CdS thin films can be used in photosensor application. -- Abstract: CdS quantum dots thin-films have been deposited onto the glass substrate at room temperature using modified chemical bath deposition technique. The prepared thin films were further annealed in air atmosphere at 150, 250 and 350 °C for 1 h and subsequently characterized by scanning electron microscopy, ultraviolet–visible spectroscopy, electrical resistivity and I–V system. The modifications observed in morphology and opto-electrical properties of the thin films are presented.

Shaikh, Shaheed U.; Desale, Dipalee J.; Siddiqui, Farha Y.; Ghosh, Arindam; Birajadar, Ravikiran B. [Thin film and Nanotechnology Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India)] [Thin film and Nanotechnology Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India); Ghule, Anil V. [Department of Nanotechnology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India)] [Department of Nanotechnology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India); Sharma, Ramphal, E-mail: ramphalsharma@yahoo.com [Thin film and Nanotechnology Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India)] [Thin film and Nanotechnology Laboratory, Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, M.S. (India)

2012-11-15T23:59:59.000Z

144

Room-temperature serial crystallography using a kinetically optimized microfluidic device for protein crystallization and on-chip X-ray diffraction  

Science Journals Connector (OSTI)

An emulsion-based serial crystallographic technology has been developed, in which single crystals are grown in nanolitre-sized droplets inside an X-ray semi-transparent microfluidic chip exploiting a negative feedback mechanism. Diffraction data are measured, one crystal at a time, from a series of room-temperature crystals stored in the chip, and a 93% complete data set is obtained by merging single diffraction frames taken from different unoriented crystals to solve the structure of glucose isomerase to 2.1 ?.

Heymann, M.

2014-08-25T23:59:59.000Z

145

One-pot room-temperature conversion of cyclohexane to adipic acid by ozone and UV light  

Science Journals Connector (OSTI)

...nitric acid oxidation method (3). The first step is air oxidation of cyclohexane under high temperatures (125° to 165...Finlayson-Pitts B. J. Pitts J. N. Jr. , Tropospheric air pollution: Ozone, airborne toxics, polycyclic aromatic hydrocarbons...

Kuo Chu Hwang; Arunachalam Sagadevan

2014-12-19T23:59:59.000Z

146

Room-Temperature Ferromagnetism in a II-VI Diluted Magnetic Semiconductor Zn1-xCrxTe  

Science Journals Connector (OSTI)

The magnetic and magneto-optical properties of a Cr-doped II-VI semiconductor ZnTe were investigated. Magnetic circular dichroism measurements showed a strong interaction between the sp carriers and localized d spins, indicating that Zn1-xCrxTe is a diluted magnetic semiconductor. The Curie temperature of the film with x=0.20 was estimated to be 300±10???K, which is the highest value ever reported for a diluted magnetic semiconductor in which sp-d interactions were confirmed. In spite of its high Curie temperature, Zn1-xCrxTe film shows semiconducting electrical transport properties.

H. Saito; V. Zayets; S. Yamagata; K. Ando

2003-05-20T23:59:59.000Z

147

Novel multiple-acidic ionic liquids: Green and efficient catalysts for the synthesis of bis-indolylmethanes under solvent-free conditions  

Science Journals Connector (OSTI)

Abstract Four novel multiple-acidic ionic liquids based on triethanolamine (TEA) were prepared and used as efficient catalysts to synthesize bis-indolylmethanes at room temperature without any organic solvent. [TEOA][HSO4] showed the best catalytic performance. The optimal amount of catalyst was 10 mol%. Various aldehydes/ketones reacted with indole/substituted indole smoothly and afforded to corresponding products in 70–99% yields within minutes. Additionally, the ionic liquid could be reused up to five times with only a slight decrease in catalytic activity. Finally, a possible reaction mechanism was given. Techniques of acidity test and NMR were introduced to verify the proposed mechanism.

Anguo Ying; Zhifeng Li; Yuxiang Ni; Songlin Xu; Hailiang Hou; Huanan Hu

2014-01-01T23:59:59.000Z

148

Room-temperature thermally induced relaxation effect in a two-dimensional cyano-bridged Cu-Mo bimetal assembly and thermodynamic analysis of the relaxation process  

SciTech Connect (OSTI)

We observed a photo-switching effect in [Cu{sup II}(1,4,8,11-tetraazacyclodecane)]{sub 2}[Mo{sup IV}(CN){sub 8}]{center_dot}10H{sub 2}O by irradiation with 410-nm light around room temperature using infrared spectroscopy. This photo-switching is caused by the photo-induced charge transfer from Mo{sup IV} to Cu{sup II}. The photo-induced phase thermally relaxed to the initial phase with a half-life time of 2.7 Multiplication-Sign 10{sup 1}, 6.9 Multiplication-Sign 10{sup 1}, and 1.7 Multiplication-Sign 10{sup 2} s at 293, 283, and 273 K, respectively. The relaxation process was analyzed using Hauser's equation, k=k{sub 0}exp[-(E{sub a}+E{sub a}{sup *}{gamma}) /k{sub B}T], where k is the rate constant of relaxation, k{sub 0} is the frequency factor, E{sub a} is the activation energy, E{sub a}{sup *} is the additional activation energy due to the cooperativity, and {gamma} is the fraction of the photo-induced phase. k{sub 0}, E{sub a}, and E{sub a}{sup *} were evaluated as 1.28 Multiplication-Sign 10{sup 7}{+-} 2.6 s{sup -1}, 4002 {+-} 188 cm{sup -1}, and 546 {+-} 318 cm{sup -1}, respectively. The value of E{sub a} is much larger than that of the relaxation process for the typical light-induced spin crossover effect (E{sub a} Almost-Equal-To 1000 cm{sup -1}). Room-temperature photo-switching is an important issue in the field of optical functional materials. The present system is useful for the demonstration of high-temperature photo-switching material.

Umeta, Yoshikazu; Ozaki, Noriaki [Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Tokoro, Hiroko [Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); NEXT, JSPS, 8 Ichibancho, Chiyoda-ku, Tokyo 102-8472 (Japan); Ohkoshi, Shin-ichi [Department of Chemistry, School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); CREST, JST, K's Gobancho, 7 Gobancho, Chiyoda-ku, Tokyo 102-0076 (Japan)

2013-04-15T23:59:59.000Z

149

On the performance and mechanisms of toluene removal by FeOx/SBA-15-assisted non-thermal plasma at atmospheric pressure and room temperature  

Science Journals Connector (OSTI)

Abstract FeOx/SBA-15 catalysts were prepared via impregnation and utilized for toluene removal in dielectric barrier discharge (DBD) plasma at atmospheric pressure and room temperature. Toluene removal was investigated in the environment of various mixed N2/O2 plasmas, showing that toluene removal efficiency and \\{COx\\} selectivity were greatly increased by FeOx/SBA-15 and that the organic intermediates were greatly reduced by catalysts. In pure N2 plasma, the bulk oxygen in the catalyst was involved in the toluene oxidation, and the 3%FeOx/SBA-15 catalyst showed the optimal toluene oxidation activity. The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), N2 adsorption–desorption, X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR) and O2 temperature-programmed desorption (O2-TPD), showing that toluene oxidation was closely related to the highly dispersed nature of iron on the SBA-15 surface, the reduction temperature of Fe2+ and the oxygen adsorption ability of the catalyst. The pathways of toluene decomposition in the combination of FeOx/SBA-15 with a non-thermal plasma (NTP) system were proposed based on the identified intermediates.

Meijuan Lu; Rong Huang; Junliang Wu; Mingli Fu; Limin Chen; Daiqi Ye

2015-01-01T23:59:59.000Z

150

Room temperature reaction of oxygen with gold: an in situ ambient-pressure X-ray photoelectron spectroscopy investigation  

SciTech Connect (OSTI)

Gold is commonly regarded as the most inert element.1 However, the discovery of the exceptional catalytic properties of gold nanoparticles (NPs) for low temperature CO oxidation2 initiated great interest due to its promising applications and spawned a large number of studies devoted to the understanding of the reaction mechanism.3-6 Nevertheless, no consistent and conclusive picture has arisen.7-13

Jiang, Peng; Porsgaard, Soeren; Borondics, Ferenc; Kober, Mariana; Caballero, Alfonso; Bluhm, Hendrik; Besenbacher, Flemming; Salmeron, Miquel

2010-02-01T23:59:59.000Z

151

High Peak-to-Valley Current Ratio GaAs/InGaAs/InAs Double Stepped Quantum Well Resonant Interband Tunneling Diodes at Room Temperature  

Science Journals Connector (OSTI)

A high ratio of the peak current density to the valley current density of current-voltage characteristic is accomplished for the double stepped quantum well resonant interband tunneling diode (DSQW RITD). Results for good quantum confinement effect and long drift layer with deep quantum well GaAs/In0.59Ga0.41As/InAs DSQW RITD that has a lower valley current density of about 0.98 A/cm2 and a higher peak-to-valley current ratio (PVCR) reached 622 at room temperature than conventionally designed double quantum well resonant interband tunneling diodes (DQW RITDs) are presented. This PVCR value is also the highest value than those of the other resonant tunneling diodes.

Chih-Chin Yang; Kuang-Chih Huang; Yan-Kuin Su

1996-01-01T23:59:59.000Z

152

Room-temperature operation of an InGaAsP double-heterostructure laser emitting at 1. 55. mu. m on a Si substrate  

SciTech Connect (OSTI)

The room-temperature operations of an InGaAsP double-heterostructure (DH) laser emitting at 1.55 {mu}m on a Si substrate is reported. A pulsed threshold current as low as 46 mA has been measured for a ridge waveguide laser with a 4 {mu}m strip width and a 200 {mu}m cavity length. This successful laser operation is due to the high crystalline quality of the DH structure with full width at half maximum of x-ray rocking curves as low as 110 arcsec grown on a Si substrate by the organometallic vapor phase epitaxy/vapor mixing epitaxy hybrid method. A correlation between the optical property of an InGaAsP DH and its crystalline quality is also discussed.

Sugo, M.; Mori, H.; Tachikawa, M.; Itoh, Y.; Yamamoto, M. (NTT Opto-electronics Laboratories, 3-1 Morinosato Wakamiya, Atsugi-shi, Kanagawa 243-01 (Japan))

1990-08-06T23:59:59.000Z

153

Anion effects in the extraction of lanthanide 2-thenoyltrifluoroacetone complexes into an ionic liquid  

SciTech Connect (OSTI)

The extraction of trivalent lanthanides from an aqueous phase containing 1 M NaClO{sub 4} into the room temperature ionic liquid 1-butyl-3-methylimidazolium nonafluoro-1-butane sulfonate by the beta-diketone extractant 2-thenoyltrifluoroacetone (Htta) was studied. Radiotracer distribution, absorption spectroscopy, time-resolved laser-induced fluorescence spectroscopy, and X-ray absorption fine structure measurements point to the extraction of multiple lanthanide species. At low extractant concentrations, fully hydrated aqua cations of the lanthanides are present in the ionic liquid phase. As the extractant concentration is increased 1:2 and 1:3 lanthanide:tta species are observed. In contrast, 1:4 Ln:tta complexes were observed in the extraction of lanthanides by Htta into 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide. (authors)

Jensen, Mark P.; Beitz, James V.; Rickert, Paul G. [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Borkowski, Marian [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Los Alamos Natl Lab, Earth and Environm Sci Div, Carlsbad, NM, (United States); Laszak, Ivan [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Commisariat Energie Atom, DEN DPC SERC LANIE, Gif Sur Yvette, (France); Dietz, Mark L. [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Wisconsin-Milwaukee Univ, Department of Chemistry and Biochemistry, Milwaukee, WI, (United States)

2012-07-01T23:59:59.000Z

154

Role of Amorphous Boundary Layer in Enhancing Ionic Conductivity of Lithium–lanthanum–titanate Electrolyte  

SciTech Connect (OSTI)

The low ionic conductivity is a bottleneck of the inorganic solid state electrolyte used for lithium ion battery. In ceramic electrolytes, grain boundary usually dominates the total conductivity. In order to improve the grain boundary effect, an amorphous silica layer is introduced into grain boundary of ceramic electrolytes based on lithium-lanthanum-titanate, as evidenced by electron microscopy. The results showed that the total ionic conductivity could be to be enhanced over 1 x 10{sup -4} S/cm at room temperature. The reasons can be attributed to removing the anisotropy of outer-shell of grains, supplement of lithium ions in various sites in grain boundary and close bindings among grains by the amorphous boundary layer among grains.

Mei, A.; Wang, X.; Lana, J.-L.; Fenga, Y.-C.; Genga, H.-X.; Lina, Y.-H.; Nana, C.-W.

2010-03-01T23:59:59.000Z

155

Evaluation by room?temperature electroreflectance of the 77 K dark?storage time of bulk mercury cadmium telluride measured on metal?insulator semiconductor devices  

Science Journals Connector (OSTI)

We have studied a set of 14 very carefully characterized samples by spectroscopicellipsometry electrolyte electroreflectance (EER) and other measurements and have measured the 77 K storage time ? of metal?insulator semiconductor (MIS)devices built on these samples. The measured storage times ranged from 6.8 to 130.8 ?s. Only the results of the EER measurements showed a correlation with the measured values of ?. We interpret our EER results in terms of a two?phase model consisting of bulk plus very thin highly defectuous regions possibly associated with subgrain boundaries. The observed correlation between the values of the incremental linewidth ?? of the thin defectuous regions and the values of the charge?storage lifetimes ? of the MISdevices is excellent and capable of predicting the values of ?. Furthermore the exact form of the observed correlation is shown to follow immediately from a simple physical model.Correlations between the values of ? and those of other parameters measured by EER were also observed. They suggest a possible simple physical picture for the primary origin of dark current in these devices. This is the first predictive quantitative correlation ever observed between the results of room?temperature optical characterizations of semiconductor materials and the low?temperature electrical performance of devices built on those materials.

Paul M. Raccah; James W. Garland; De Yang; Hisham Abad; Roger L. Strong; Matthew C. McNeill

1989-01-01T23:59:59.000Z

156

Resonant tunneling with high peak to valley current ratio in SiO{sub 2}/nc-Si/SiO{sub 2} multi-layers at room temperature  

SciTech Connect (OSTI)

We have investigated carrier transport in SiO{sub 2}/nc-Si/SiO{sub 2} multi-layers by room temperature current-voltage measurements. Resonant tunneling signatures accompanied by current peaks are observed. Carrier transport in the multi-layers were analyzed by plots of ln(I/V{sup 2}) as a function of 1/V and ln(I) as a function of V{sup 1/2}. Results suggest that besides films quality, nc-Si and barrier sub-layer thicknesses are important parameters that restrict carrier transport. When thicknesses are both small, direct tunneling dominates carrier transport, resonant tunneling occurs only at certain voltages and multi-resonant tunneling related current peaks can be observed but with peak to valley current ratio (PVCR) values smaller than 1.5. When barrier thickness is increased, trap-related and even high field related tunneling is excited, causing that multi-current peaks cannot be observed clearly, only one current peak with higher PVCR value of 7.7 can be observed. While if the thickness of nc-Si is large enough, quantum confinement is not so strong, a broad current peak with PVCR value as high as 60 can be measured, which may be due to small energy difference between the splitting energy levels in the quantum dots of nc-Si. Size distribution in a wide range may cause un-controllability of the peak voltages.

Chen, D. Y., E-mail: cdy7659@126.com [Department of Physics, Nanjing National Laboratory of Microstructures and Key Laboratory of Advanced Photonic and Electronic, materials, Nanjing University, Nanjing 210093 (China); Nanjing University of posts and Telecommunications, Nanjing 210046 (China); Sun, Y.; He, Y. J. [Nanjing University of posts and Telecommunications, Nanjing 210046 (China); Xu, L.; Xu, J. [Department of Physics, Nanjing National Laboratory of Microstructures and Key Laboratory of Advanced Photonic and Electronic, materials, Nanjing University, Nanjing 210093 (China)

2014-01-28T23:59:59.000Z

157

High spin polarization at room temperature in Ge-substituted Fe{sub 3}O{sub 4} epitaxial thin film grown under high oxygen pressure  

SciTech Connect (OSTI)

Epitaxial thin films of room-temperature ferrimagnetic (Fe,Ge){sub 3}O{sub 4} were fabricated using pulsed laser deposition. Films with a single-phase spinel structure were grown under high oxygen pressures (0.01–0.6?Pa). The carrier transport across (Fe,Ge){sub 3}O{sub 4}/Nb:SrTiO{sub 3} interface was studied to estimate the spin polarization of (Fe, Ge){sub 3}O{sub 4}. Current–voltage curves of Fe{sub 2.8}Ge{sub 0.2}O{sub 4}/Nb:SrTiO{sub 3} junction showed rectifying behavior even at 300?K whereas Fe{sub 3}O{sub 4}/Nb:SrTiO{sub 3} junction showed ohmic behavior. Calculations based on a model for a Schottky contact with a ferromagnetic component yielded a spin polarization of 0.50 at 300?K for Fe{sub 2.8}Ge{sub 0.2}O{sub 4}, indicating its potential as a promising spin injector.

Seki, Munetoshi, E-mail: m-seki@ee.t.u-tokyo.ac.jp; Takahashi, Masanao; Ohshima, Toshiyuki; Yamahara, Hiroyasu; Tabata, Hitoshi [Department of Electrical Engineering and Information Systems, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)] [Department of Electrical Engineering and Information Systems, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 (Japan)

2013-11-18T23:59:59.000Z

158

UHV high-resolution electron microscopy and chemical analysis of room-temperature Au deposition on Si(001)-2×1  

Science Journals Connector (OSTI)

Investigations of Au on Si(001) have suggested that room-temperature deposition of Au on a clean Si surface results in an interfacial reaction and the formation of a gold-silicide. However, these investigations typically lack direct information about the surface morphology or the exact structure at the interface. Utilizing the capabilities of a surface chemical analysis system attached to a Hitachi UHV H-9000 microscope, a layer plus island growth mode has been observed by high-resolution electron microscopy showing multiply twinned small particles on the surface. The presence of small particles for various coverages has been correlated with the shifts seen in the Si 2p and Au 4f binding energies as well as the peak splitting in the Si LVV Auger transition. Our chemical data are consistent with observed shifts in the binding energies of small metal clusters deposited on various substrates, and with the published data for this surface. In addition, the results are consistent with our previous studies of Ag on Si(001), and indicate the growth morphology plays a crucial role in understanding spectroscopic information as well as its correlation to the structure and chemical state of the interface and surface morphology.

E. Landree, D. Grozea, C. Collazo-Davila, and L. D. Marks

1997-03-15T23:59:59.000Z

159

Characterization of room temperature recrystallization kinetics in electroplated copper thin films with concurrent x-ray diffraction and electrical resistivity measurements  

SciTech Connect (OSTI)

Concurrent in-situ four-point probe resistivity and high resolution synchrotron x-ray diffraction measurements were used to characterize room temperature recrystallization in electroplated Cu thin films. The x-ray data were used to obtain the variation with time of the integrated intensities and the peak-breadth from the Cu 111 and 200 reflections of the transforming grains. The variation of the integrated intensity and resistivity data with time was analyzed using the Johnson-Mehl-Avrami-Kolmogorov (JMAK) model. For both 111-textured and non-textured electroplated Cu films, four-point probe resistivity measurements yielded shorter transformation times than the values obtained from the integrated intensities of the corresponding Cu 111 reflections. In addition, the JMAK exponents fitted to the resistivity data were significantly smaller. These discrepancies could be explained by considering the different material volumes from which resistivity and diffraction signals originated, and the physical processes which linked these signals to the changes in the evolving microstructure. Based on these issues, calibration of the resistivity analysis with direct structural characterization techniques is recommended.

Treger, Mikhail; Noyan, I. C. [Department of Applied Physics and Applied Mathematics, Columbia University, New York 10027 (United States)] [Department of Applied Physics and Applied Mathematics, Columbia University, New York 10027 (United States); Witt, Christian [GlobalFoundries, T.J. Watson Research Center, Yorktown Heights, New York 10598 (United States)] [GlobalFoundries, T.J. Watson Research Center, Yorktown Heights, New York 10598 (United States); Cabral, Cyril; Murray, Conal; Jordan-Sweet, Jean [IBM, T.J. Watson Research Center, Yorktown Heights, New York 10598 (United States)] [IBM, T.J. Watson Research Center, Yorktown Heights, New York 10598 (United States); Rosenberg, Robert [State University of New York, the University at Albany, Albany, NY 12203 (United States)] [State University of New York, the University at Albany, Albany, NY 12203 (United States); Eisenbraun, Eric [College of Nanoscale Science and Engineering, University at Albany, Albany, NY 12203 (United States)] [College of Nanoscale Science and Engineering, University at Albany, Albany, NY 12203 (United States)

2013-06-07T23:59:59.000Z

160

Partially fluorinated ionic compounds  

DOE Patents [OSTI]

Partially fluorinated ionic compounds are prepared. They are useful in the preparation of partially fluorinated dienes, in which the repeat units are cycloaliphatic.

Han, legal representative, Amy Qi (Hockessin, DE); Yang, Zhen-Yu (Hockessin, DE)

2008-11-25T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Alkaline Ionic Liquids as Catalysts: A Novel and Green Process for the Dehydration of Carbohydrates To Give 5-Hydroxymethylfurfural  

Science Journals Connector (OSTI)

Alkaline Ionic Liquids as Catalysts: A Novel and Green Process for the Dehydration of Carbohydrates To Give 5-Hydroxymethylfurfural ... An efficient process for the conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) catalyzed by the room temperature ionic liquid (IL) 1-butyl-3-methylimidazolium hydroxide ([BMIM]OH), using dimethyl sulfoxide (DMSO) as solvent, has been developed. ... (6, 7) The efficient transformation of hexoses such as fructose, glucose, galactose, and mannose or disaccharides such as sucrose and cellobiose into 5-hydroxymethylfurfural (5-HMF)—which is regarded as a versatile platform molecule and is used in the production of fine chemicals, pharmaceuticals, and polymers—is a key step in the use of carbohydrates to produce liquid fuels and value-added chemicals. ...

Yong-Shui Qu; Yan-Lei Song; Chong-Pin Huang; Jie Zhang; Biao-Hua Chen

2012-09-15T23:59:59.000Z

162

Neutral-ionic transitions in organic mixed-stack compounds  

SciTech Connect (OSTI)

Torrance et al. have made the interesting observation that several mixed-stack organic compounds undergo transitions from neutral states to ionic states as the temperature or pressure is varied. We examine a simple model of such transitions including Coulomb interaction and hybridization of neutral and ionic states. In the limit of weak hybridization and long-range repulsive interaction between ionic planes, it is proven that there is a complete devil's staircase where the degree of ionicity assumes an infinity of rational values. For attractive interactions between ionic planes, the neutral-ionic transition is shown to be first order for weak hybridization. Comparison with experiment indicates that this situation applies to tetrathiafulvalene (TTF) chloranil. For strong hybridization the transition is continuous but goes through a metallic phase. It is shown, for the first time, that the spectrum of the charge-transfer Hamiltonian contains both a bound spectrum, the observed charge-transfer excitations, and a continuum.

Bruinsma, R.; Bak, P.; Torrance, J.B.

1983-01-01T23:59:59.000Z

163

Interfacial Ionic Liquids: Connecting Static and Dynamic Structures  

E-Print Network [OSTI]

It is well-known that room temperature ionic liquids (RTILs) often adopt a charge-separated layered structure, i.e., with alternating cation- and anion-rich layers, at electrified interfaces. However, the dynamic response of the layered structure to temporal variations in applied potential is not well understood. We used in situ, real-time X-ray reflectivity (XR) to study the potential-dependent electric double layer (EDL) structure of an imidazolium-based RTIL on charged epitaxial graphene during potential cycling as a function of temperature. The results suggest that the graphene-RTIL interfacial structure is bistable in which the EDL structure at any intermediate potential can be described by the combination of two extreme-potential structures whose proportions vary depending on the polarity and magnitude of the applied potential. This picture is supported by the EDL structures obtained by fully atomistic molecular dynamics (MD) simulations at various static potentials. The potential-driven transition between the two structures is characterized by an increasing width but with an approximately fixed hysteresis magnitude as a function of temperature. The results are consistent with the coexistence of distinct anion and cation adsorbed structures separated by an energy barrier (~0.15 eV).

Ahmet Uysal; Hua Zhou; Guang Feng; Sang Soo Lee; Song Li; Peter T. Cummings; Pasquale F. Fulvio; Sheng Dai; John K. McDonough; Yury Gogotsi; Paul Fenter

2014-12-06T23:59:59.000Z

164

CONFERENCE ROOMS CONFERENCE ROOMS FOR RESERVATION  

E-Print Network [OSTI]

CONFERENCE M0700 BASEMENT CONFERENCE ROOMS CONFERENCE M0720 HRCMEB CONFERENCE M0390 CONFERENCE ROOMS FOR RESERVATION INFORMAL MEETING SPACE TBRC CLASSROOM SPACE #12;CONFERENCE H1210 CONFERENCE H1320 HRC MEB INFORMAL MEETING SPACE CONFERENCE ROOMS FOR RESERVATION TBRC LOUNGE C1068 LOUNGE C1050 LOUNGE

165

Energy performance of air distribution systems part II: room air stratification full scale testing  

E-Print Network [OSTI]

control), one that resets supply plenum pressure set point from room temperatureControl strategy (CAV/VAV/open loop) Room setpoint Room supply air temperaturecontrol mode; i.e. , uncontrolled at a given entering airflow and supply temperature.

Webster, Tom; Lukaschek, Wolfgang; Dickeroff, Darryl; Bauman, Fred

2007-01-01T23:59:59.000Z

166

Mathematics Help Room  

E-Print Network [OSTI]

Link to Help Room Schedule. The Mathematics Help Room is available to help you with your 100 and 200 level Algebra, Algebra/Trigonometry, or Calculus ...

167

Hillyer Meeting Room Purpose of room  

E-Print Network [OSTI]

.syr.edu/services/PDF/generalpolicy.pdf To reserve a room: http://library.syr.edu/services/space/form-findroom.php To cancel a room reservation Library (see http://library.syr.edu/about/tour/images/floor_1_med.jpg for floor map). Priority for use of Room: 1) Library-provided instruction sessions 2) Library-sponsored meetings and events 3) Non-Library

Raina, Ramesh

168

Low-frequency Raman spectra and fragility of imidazolium ionic liquids  

SciTech Connect (OSTI)

Raman spectra within the 5-200 cm{sup -1} range have been recorded as a function of temperature for different ionic liquids based on imidazolium cations. A correlation has been found between fragility and the temperature dependence of the strength of fast relaxational motions. Understanding quasielastic scattering as the relaxational contribution to ionic mean-squared displacement elucidates some effects on ionic liquids' fragility resulting from modifications in the chemical structure.

Ribeiro, Mauro C. C. [Laboratorio de Espectroscopia Molecular, Instituto de Quimica, Universidade de Sao Paulo, CP 26077, CEP 05513-970 Sao Paulo, Sao Paulo (Brazil)

2010-07-14T23:59:59.000Z

169

Low-frequency Raman spectra and fragility of imidazolium ionic liquids  

Science Journals Connector (OSTI)

Raman spectra within the 5 – 200 ? cm ? 1 range have been recorded as a function of temperature for different ionic liquids based on imidazolium cations. A correlation has been found between fragility and the temperature dependence of the strength of fast relaxational motions. Understanding quasielastic scattering as the relaxational contribution to ionic mean-squared displacement elucidates some effects on ionic liquids’ fragility resulting from modifications in the chemical structure.

Mauro C. C. Ribeiro

2010-01-01T23:59:59.000Z

170

Super ionic conductive glass  

DOE Patents [OSTI]

An ionically conducting glass for use as a solid electrolyte in a power or secondary cell containing an alkali metal-containing anode and a cathode separated by an alkali metal ion conducting glass having an ionic transference number of unity and the general formula: A.sub.1+x D.sub.2-x/3 Si.sub.x P.sub.3-x O.sub.12-2x/3, wherein A is a network modifier for the glass and is an alkali metal of the anode, D is an intermediate for the glass and is selected from the class consisting of Zr, Ti, Ge, Al, Sb, Be, and Zn and X is in the range of from 2.25 to 3.0. Of the alkali metals, Na and Li are preferred and of the intermediate, Zr, Ti and Ge are preferred.

Susman, Sherman (Park Forest, IL); Volin, Kenneth J. (Fort Collins, CO)

1984-01-01T23:59:59.000Z

171

Methods of using ionic liquids having a fluoride anion as solvents  

DOE Patents [OSTI]

A method in one embodiment includes contacting a strongly hydrogen bonded organic material with an ionic liquid having a fluoride anion for solubilizing the strongly hydrogen bonded organic material; and maintaining the ionic liquid at a temperature of about 90.degree. C. or less during the contacting. A method in another embodiment includes contacting a strongly hydrogen bonded organic material with an ionic liquid having an acetate or formate anion for solubilizing the strongly hydrogen bonded organic material; and maintaining the ionic liquid at a temperature of less than about 90.degree. C. during the contacting.

Pagoria, Philip (Livermore, CA); Maiti, Amitesh (San Ramon, CA); Gash, Alexander (Brentwood, CA); Han, Thomas Yong (Pleasanton, CA); Orme, Christine (Oakland, CA); Fried, Laurence (Livermore, CA)

2011-12-06T23:59:59.000Z

172

Characterization of Single Barrier Microrefrigerators at Cryogenic Temperatures  

E-Print Network [OSTI]

Microrefrigerators at Cryogenic Temperatures X. WANG, 1,3 Y.Microrefrigerators at Cryogenic Temperatures Fig. 6. Three-ionic cooling devices at cryogenic temperatures is reported.

2009-01-01T23:59:59.000Z

173

Sandia National Laboratories: ionic liquid  

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

liquid Biofuels Blend Right In: Researchers Show Ionic Liquids Effective for Pretreating Mixed Blends of Biofuel Feedstocks On February 26, 2013, in Biofuels, Biomass, Energy,...

174

Intermolecular vibrations and fast relaxations in supercooled ionic liquids  

Science Journals Connector (OSTI)

Short-time dynamics of ionic liquids has been investigated by low-frequency Raman spectroscopy (4 < ? < 100 cm?1) within the supercooled liquid range. Raman spectra are reported for ionic liquids with the same anion bis(trifluoromethylsulfonyl)imide and different cations: 1-butyl-3-methylimidazolium 1-hexyl-3-methylimidazolium 1-butyl-1-methylpiperidinium trimethylbutylammonium and tributylmethylammonium. It is shown that low-frequency Raman spectroscopy provides similar results as optical Kerr effect (OKE) spectroscopy which has been used to study intermolecular vibrations in ionic liquids. The comparison of ionic liquids containing aromatic and non-aromatic cations identifies the characteristic feature in Raman spectra usually assigned to librational motion of the imidazolium ring. The strength of the fast relaxations (quasi-elastic scattering QES) and the intermolecular vibrational contribution (boson peak) of ionic liquids with non-aromatic cations are significantly lower than imidazolium ionic liquids. A correlation length assigned to the boson peak vibrations was estimated from the frequency of the maximum of the boson peak and experimental data of sound velocity. The correlation length related to the boson peak (?19 Å) does not change with the length of the alkyl chain in imidazolium cations in contrast to the position of the first-sharp diffraction peak observed in neutron and X-ray scattering measurements of ionic liquids. The rate of change of the QES intensity in the supercooled liquid range is compared with data of excess entropy free volume and mean-squared displacement recently reported for ionic liquids. The temperature dependence of the QES intensity in ionic liquids illustrates relationships between short-time dynamics and long-time structural relaxation that have been proposed for glass-forming liquids.

Mauro C. C. Ribeiro

2011-01-01T23:59:59.000Z

175

Public Reading Room  

Office of Legacy Management (LM)

has established a Public Reading Room at 955 has established a Public Reading Room at 955 Mound Road, Miamisburg, Ohio, which contains documents and information related to Mound as required under Section 117(d) of SARA. Copies of key Mound records, including the CERCLA Administrative Record and Information Repository, are kept in the Public Reading Room. The Administrative Record and Information Repository for Mound are updated as new documents are created and an index of documents in the complete collections accompanies each update. The Public Reading Room also contains reference items consisting of technical documents, news clippings, videotapes, journal articles, annual reports, and environmental restoration and decontamination and decommissioning decisional documents. Stakeholders are

176

Common Help Room Hours  

E-Print Network [OSTI]

Common Help Room Hours for Spring 2015. Monday, Tuesday, Wednesday, Thursday, Friday. 10:30 am. 11:30 am. MA 16200 - MATH 205 - Nathanael Cox ...

177

Common Help Room Hours  

E-Print Network [OSTI]

Common Help Room Hours for Spring 2015. Monday, Tuesday, Wednesday, Thursday, Friday. 10:30 am. 11:30 am. MA 16010 - MATH 205 - Alessandra ...

178

Demolishing Searle's Chinese Room  

E-Print Network [OSTI]

Searle's Chinese Room argument is refuted by showing that he has actually given two different versions of the room, which fail for different reasons. Hence, Searle does not achieve his stated goal of showing ``that a system could have input and output capabilities that duplicated those of a native Chinese speaker and still not understand Chinese''.

Wolfram Schmied

2004-03-08T23:59:59.000Z

179

journal Solid State Ionics  

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

Structural and transport properties of Nafion in hydrobromic Structural and transport properties of Nafion in hydrobromic acid solutions journal Solid State Ionics year month abstract p Proton exchange membranes are key solid state ion carriers in many relevant energy technologies including flow batteries fuel cells and solar fuel generators In many of these systems the membranes are in contact with electrolyte solutions In this paper we focus on the impact of different HBr a flow battery and exemplary acid electrolyte external concentrations on the conductivity of Nafion a perfluorosulfonic acid membrane that is commonly used in many energy related applications The peak and then decrease in conductivity is correlated with measured changes in the water and HBr content within the membrane In addition small angle x ray scattering is used to probe the nanostructure to

180

Ionic Ckonductivity and Glass Transition of Phosphoric Acids  

SciTech Connect (OSTI)

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5 5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Wang, Yangyang [ORNL; Lane, Nathan A [ORNL; Sun, Che-Nan [Oak Ridge National Laboratory (ORNL); Fan, Fei [ORNL; Zawodzinski, Thomas [University of Tennessee, Knoxville (UTK); Sokolov, Alexei P [ORNL

2013-01-01T23:59:59.000Z

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


181

Ionic conductivity and glass transition of phosphoric acids  

SciTech Connect (OSTI)

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5 5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Wang, Yangyang [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Lane, Nathan A [ORNL] [ORNL; Sun, Che-Nan [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Fan, Fei [ORNL] [ORNL; Zawodzinski, Thomas [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Sokolov, Alexei P [ORNL] [ORNL

2013-01-01T23:59:59.000Z

182

TETRAALKYLPHOSPHONIUM POLYOXOMETALATES AS NOVEL IONIC LIQUIDS.  

SciTech Connect (OSTI)

The pairing of a Lindqvist or Keggin polyoxometalate (POM) anion with an appropriate tetraalkylphosphonium cation, [R{sub 3}R{prime}P]{sup +}, has been shown to yield an original family of ionic liquids (POM-ILs), among them salts liquid at or near ambient temperature. The physicochemical properties of several such 'inorganic liquids', in particular their thermal properties, suggests the possible application of these compounds as robust, thermally-stable solvents for liquid-liquid extraction. A preliminary evaluation of the potential of POM-ILs in this application is presented.

DIETZ,M.L.; RICKERT, P.G.; ANTONIO, M.R.; FIRESTONE, M.A.; WISHART, J.F.; SZREDER, T.

2007-11-30T23:59:59.000Z

183

Patch Panel Control Room  

E-Print Network [OSTI]

Patch Panel CCR-EE-092 Control Room CCR-EE-100 Control Room Optic Patch Rack CSS-EE-954 Junction (PC Fault Event) Patch Panel CCC-EE-209 Junction Area E O PC Fault Event PC Fault Event PC Fault Event CNBS-EE-358 138' Level Patch Panel CNBS-EE-389 138' Level E E E Crates 9, 19 COH1-EE-651 FCPC Crates 21

Princeton Plasma Physics Laboratory

184

Room temperature and productivity in office work  

E-Print Network [OSTI]

vigilance in a moving vehicle. Ergonomics 39 (1996)1,61-75.paired associate learning. Ergonomics, 21 [2] Berglund, L. ,

Seppanen, O.; Fisk, W.J.; Lei, Q.H.

2006-01-01T23:59:59.000Z

185

Room temperature and productivity in office work  

E-Print Network [OSTI]

2003. Proceedings of Healthy Buildings 2003 Conference.building, Proceedings of Healthy Buildings 2003 Conference.work. Proceedings of Healthy Buildings Conference 2003.

Seppanen, O.; Fisk, W.J.; Lei, Q.H.

2006-01-01T23:59:59.000Z

186

Radiation Chemistry of Ionic Liquids  

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

Liquids Liquids James F. Wishart, Alison M. Funston, and Tomasz Szreder in "Molten Salts XIV" Mantz, R. A., et al., Eds.; The Electrochemical Society, Pennington, NJ, (2006) pp. 802-813. [Information about the volume (look just above this link)] Abstract: Ionic liquids have potentially important applications in nuclear fuel and waste processing, energy production, improving the efficiency and safety of industrial chemical processes, and pollution prevention. Successful use of ionic liquids in radiation-filled environments will require an understanding of ionic liquid radiation chemistry. For example, characterizing the primary steps of ionic liquid radiolysis will reveal radiolytic degradation pathways and suggest ways to prevent them or mitigate their effects on the properties of the material

187

Catalytic conversion of cellulose into 5-hydroxymethylfurfural over chromium trichloride in ionic liquid  

Science Journals Connector (OSTI)

An efficient method for converting cellulose into 5-hydroxymethylfurfural (5-HMF) using an inexpensive ionic...3·6H2O) was developed. The effects of hydrochloric acid loading, catalyst dosage, reaction temperatur...

Shui Wang; Yizhen Du; Wenqian Zhang…

2014-10-01T23:59:59.000Z

188

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. | EMSL  

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

Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Degradation of Ionic Pathway in PEM Fuel Cell Cathode. Abstract: The degradation of the ionic pathway throughout the catalyst...

189

Humidity-resistant ambient-temperature solid-electrolyte amperometric sensing apparatus  

DOE Patents [OSTI]

Apparatus and methods for detecting selected chemical compounds in air or other gas streams at room or ambient temperature includes a liquid-free humidity-resistant amperometric sensor comprising a sensing electrode and a counter and reference electrode separated by a solid electrolyte. The sensing electrode preferably contains a noble metal, such as Pt black. The electrolyte is water-free, non-hygroscopic, and substantially water-insoluble, and has a room temperature ionic conductivity [>=]10[sup [minus]4] (ohm-cm)[sup [minus]1], and preferably [>=]0.01 (ohm-cm)[sup [minus]1]. The conductivity may be due predominantly to Ag[sup +] ions, as in Ag[sub 2]WO[sub 4], or to F[sup [minus

Zaromb, S.

1994-06-21T23:59:59.000Z

190

Physical Chemistry of Ionic Liquids  

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

Ionic liquids are experiencing explosive growth in many areas of research Ionic liquids are experiencing explosive growth in many areas of research and practical applications. They present a wide range of complex physical and chemical behaviors, including ambient vapor pressures ranging from UHV to weakly volatile, a substantial variety of distinct condensed phases, including multiple crystal isomorphs, glasses, amorphous plastic and liquid crystal phases, deep supercooling, and interesting dynamical and transport phenomena. Experiments and simulations have shown that their intrinsic self-organization at the nanoscale is responsible for several of these properties. The symposium will assemble an international array of speakers to discuss ionic liquids in the context of their heterogeneous environments, solvation, dynamics and transport, interfacial properties,

191

Room temperature multiferroic properties of Pb(Fe{sub 0.5}Nb{sub 0.5})O{sub 3}–Co{sub 0.65}Zn{sub 0.35}Fe{sub 2}O{sub 4} composites  

SciTech Connect (OSTI)

We report the crystal structure, magnetic, ferroelectric, dielectric, and magneto-dielectric properties of [Pb(Fe{sub 0.5}Nb{sub 0.5})O{sub 3}]{sub (1?x)}[Co{sub 0.65}Zn{sub 0.35}Fe{sub 2}O{sub 4}]{sub x}: (x?=?0.1, 0.2, 0.3, and 0.4) composites. Rietveld refinement results of X-ray diffraction patterns confirm the formation of these composites for all x values. All the composites show well-saturated ferroelectric and ferromagnetic hysteresis (multiferroic-composite behavior) at room temperature. With increase in Co{sub 0.65}Zn{sub 0.35}Fe{sub 2}O{sub 4} (CZFO) content an increase in saturation magnetization, and decrease in saturation polarization, remanent polarization, and dielectric constant are observed. The ferroelectric phase transition temperature increases with increase in CZFO content. All of the compositions undergo second-order ferroelectric phase transitions, which can be explained by Landau-Devonshire theory. The recoverable energy density (?0.20 to 0.04?J/cm{sup 3}) and charge-curve energy density (?0.84 to 0.11?J/cm{sup 3}) decrease with increase in the CZFO content. The room-temperature magneto-dielectric measurements provide direct evidence of magneto-electric coupling via strain at room temperature.

Pradhan, Dhiren K., E-mail: dhirenkumarp@gmail.com, E-mail: rkatiyar@hpcf.upr.edu; Katiyar, Ram S., E-mail: dhirenkumarp@gmail.com, E-mail: rkatiyar@hpcf.upr.edu [Department of Physics and Institute of Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00936 (United States); Puli, Venkata S. [Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118 (United States); Narayan Tripathy, Satya; Pradhan, Dillip K. [Department of Physics, National Institute of Technology, Rourkela 769008 (India); Scott, J. F. [Department of Physics and Institute of Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00936 (United States); Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge (United Kingdom)

2013-12-21T23:59:59.000Z

192

Physical Chemistry of Ionic Liquids Symposium Schedule  

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

(Tentative Schedule, locations and times to be determined) (Tentative Schedule, locations and times to be determined) Sunday Morning Structure and Heterogeneity of Ionic Liquids I. James Wishart and Edward Castner Introductory Remarks Andre Pinkert Hydroxyamine ionic liquids and their properties Thomas Strassner TAAILs - Tunable Aryl-Alkyl Ionic Liquids: A new generation of ionic liquids Laura Sprunger Grubbs Thermodynamic Properties of New Generation Ionic Liquids Christopher Hardacre Prediction methods for physical properties of ionic liquids BREAK Patricia Hunt What happens when you functionalise an ionic liquid with a "silicone" side chain? Edward L Quitevis Effect of cation symmetry and nanoscale segregation on the morphology, physical properties, and low-frequency vibrational dynamics of 1,3-dialkylimidazolium cation ionic liquids

193

Higher ionic conductive ceria-based electrolytes for solid oxide fuel cells  

Science Journals Connector (OSTI)

Codoping is used to enhance the ionic conductivity of ceria-based electrolytes. Sm 3 + and Nd 3 + were selected as codopants to promote low migration energy paths for oxygen vacancydiffusion thereby increasing the ionic conductivity. Moreover the use of codopants also increases the pre-exponential factor in the Arrhenius relationship thus further improving the ionic conductivity. The ionic conductivity of Sm x Nd x Ce 1 ? 2 x O 2 ? ? solid solutions is measured using electrochemical impedance spectroscopy. It was observed that for Sm 0.075 Nd 0.075 Ce 0.85 O 2 ? ? the grain ionic conductivity was 14.0 × 10 ? 3 S cm ? 1 at 550 ° C which makes it one of the most promising ceria-based electrolytes for intermediate temperature solid oxide fuel cells.

Shobit Omar; Eric D. Wachsman; Juan C. Nino

2007-01-01T23:59:59.000Z

194

Nanoparticle enhanced ionic liquid heat transfer fluids  

DOE Patents [OSTI]

A heat transfer fluid created from nanoparticles that are dispersed into an ionic liquid is provided. Small volumes of nanoparticles are created from e.g., metals or metal oxides and/or alloys of such materials are dispersed into ionic liquids to create a heat transfer fluid. The nanoparticles can be dispersed directly into the ionic liquid during nanoparticle formation or the nanoparticles can be formed and then, in a subsequent step, dispersed into the ionic liquid using e.g., agitation.

Fox, Elise B.; Visser, Ann E.; Bridges, Nicholas J.; Gray, Joshua R.; Garcia-Diaz, Brenda L.

2014-08-12T23:59:59.000Z

195

Ionic Liquids for Utilization of Geothermal Energy  

Broader source: Energy.gov [DOE]

DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: to develop ionic liquids for two geothermal energy related applications.

196

Electronic Reading Room  

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

Electronic Reading Room - making information about the Freedom of Information Act (FOIA) and Privacy Act process accessible to the public electronically. Electronic Reading Room - making information about the Freedom of Information Act (FOIA) and Privacy Act process accessible to the public electronically. Major Information Systems - Final Opinions - [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases within the Office of Hearings and Appeals Statements of Policy and Interpretation and Administrative Staff Manuals and Instructions - [5 USC 552 (a)(2)](B) those statements of policy and interpretation which have been adopted by the agency and are not published in the Federal Register - Directives, DOE Orders, Headquarters Orders, Secretarial Notices, Technical Standards, Forms, Delegations, Electronic Library Public Reading Facilities - making information available for public inspection and copying

197

Reading Room Locations  

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

FOIA Offices and Reading Rooms FOIA Offices and Reading Rooms FOIA Office Locations Our FOIA Officers are located at various sites throughout the DOE complex, each with responsibility for records located at or under the jurisdiction of the site. We recommend that you send your request directly to that specific site. This will shorten the processing time. However, if you do not know which location has responsive records, you may either call the Headquarters FOIA office at (202) 586-5955 to determine the appropriate office, or mail the request to the Headquarters FOIA office. Other records are publicly available in the facilities listed below: Headquarters U.S. Department of Energy FOIA/Privacy Act Group 1000 Independence Avenue, SW Washington, D.C. 20585 Phone: 202-586-5955 Fax: 202-586-0575

198

Ionic Power Systems Ltd | Open Energy Information  

Open Energy Info (EERE)

Ionic Power Systems Ltd Ionic Power Systems Ltd Jump to: navigation, search Name Ionic Power Systems Ltd. Place San Diego, California Zip 92126 Product Ionix Power Systems, Ltd. is a developer of new and innovative products and tools designed to aid in the development of next-generation energy technologies such as batteries, fuel cells, and advanced capacitors. References Ionic Power Systems Ltd.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Ionic Power Systems Ltd. is a company located in San Diego, California . References ↑ "Ionic Power Systems Ltd." Retrieved from "http://en.openei.org/w/index.php?title=Ionic_Power_Systems_Ltd&oldid=347099" Categories:

199

Tribological characteristics of aluminum alloys against steel lubricated by ammonium and imidazolium ionic liquids  

SciTech Connect (OSTI)

Sliding friction and wear characteristics of aluminum alloys against AISI 52100 steel lubricated by ionic liquids (ILs) were investigated at both room and elevated temperatures. The tested aluminum alloys include a commercially pure aluminum Al 1100, a wrought alloy Al 6061-T6511, and a cast alloy Al 319-T6. The lubricating performance of two ILs with the same anion, one ammonium-based [C8H17]3NH.Tf2N and one imidazolium-based C10mim.Tf2N, were compared each other and benchmarked against that of a conventional fully-formulated engine oil. Significant friction (up to 35%) and wear (up to 55%) reductions were achieved by the ammonium IL when lubricating the three aluminum alloys compared to the engine oil. The imidazolium IL performed better than the oil but not as well as the ammonium IL for Al 1100 and 319 alloys. However, accelerated wear was unexpectedly observed for Al 6061 alloy when lubricated by C10mim.Tf2N. Surface chemical analyses implied complex tribochemical reactions between the aluminum surfaces and ILs during the wear testing, which has been demonstrated either beneficial by forming a protective boundary film or detrimental by causing severe tribo-corrosion. The effects of the IL cation structure, aluminum alloy composition, and tribo-testing condition on the friction and wear results have been discussed.

Qu, Jun [ORNL; Blau, Peter Julian [ORNL; Dai, Sheng [ORNL; Luo, Huimin [ORNL; Meyer III, Harry M [ORNL; Truhan, John J. [Caterpillar Inc.

2009-01-01T23:59:59.000Z

200

High-frequency acoustic modes in an ionic liquid  

Science Journals Connector (OSTI)

High-frequency collective dynamics of the ionic liquid 1-hexyl-3-methylimidazolium bromide [C6C1im]Br has been investigated by molecular dynamics simulations. Time correlation functions of mass current fluctuations were calculated for several wavevectors and the dispersion curves of excitations ?(k) for longitudinal and transverse acoustic sound modes were obtained at different temperatures and pressures. Two different thermodynamic states have the same high-frequency sound velocity irrespective of the temperature provided that both have the same density. Partial time correlation functions of mass currents were calculated for the atoms belonging to the polar or the non-polar domains resulting from the heterogeneous structure of [C6C1im]Br. The partial correlation functions indicate that the polar domains are stiffer than the non-polar domains of the simulated ionic liquid.

Mauro C. C. Ribeiro

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Quantized ionic conductance in nanopores  

SciTech Connect (OSTI)

Ionic transport in nanopores is a fundamentally and technologically important problem in view of its ubiquitous occurrence in biological processes and its impact on DNA sequencing applications. Using microscopic calculations, we show that ion transport may exhibit strong non-liDearities as a function of the pore radius reminiscent of the conductance quantization steps as a function of the transverse cross section of quantum point contacts. In the present case, however, conductance steps originate from the break up of the hydration layers that form around ions in aqueous solution. Once in the pore, the water molecules form wavelike structures due to multiple scattering at the surface of the pore walls and interference with the radial waves around the ion. We discuss these effects as well as the conditions under which the step-like features in the ionic conductance should be experimentally observable.

Zwolak, Michael [Los Alamos National Laboratory; Lagerqvist, Johan [UCSD; Di Ventra, Massimilliano [UCSD

2009-01-01T23:59:59.000Z

202

Temperature-Dependent Chemical Properties of  

E-Print Network [OSTI]

Silberstein #12;What is a fuel cell? #12;Polymer Electrolyte Membrane Two phase ionomer (ionic polymer temperatures (thermal history) and relative humidities Temperatures 150o C for 1 hour 100o C, 90o C, 80o C, 70o

Petta, Jason

203

Peter Graham Scholarly Room (PGSC) Purpose of room  

E-Print Network [OSTI]

.syr.edu/services/PDF/generalpolicy.pdf To reserve a room: http://library.syr.edu/services/space/form-findroom.php To cancel a room reservation is on the southwest (University Avenue) perimeter of the first floor of Bird Library (see http://library.syr.edu/about/tour/images/floor_1_med.jpg for floor map). Priority for use of Room: 1) Library-provided instruction sessions 2

Raina, Ramesh

204

Project Profile: Thermally-Stable Ionic Liquid Carriers for Nanoparticle-Based Heat Transfer in CSP Applications  

Broader source: Energy.gov [DOE]

Savannah River National Laboratory, under an ARRA CSP Award, is performing research to better understand the thermal stability of low-temperature organic molten salts, which are commonly referred to as ionic liquids (ILs).

205

Solubility of Carbohydrates in Ionic Liquids  

Science Journals Connector (OSTI)

‡ Laboratório Nacional de Energia e Geologia, I.P., Unit of Bioenergy, Estrada do Paço do Lumiar 22, 1649-038, Lisboa, Portugal ... The aim of this Review is to assess the current state of knowledge regarding the solubility of carbohydrates in ionic liquids but not on modifications of carbohydrates in ionic liquids. ... We herein collect all of the available literature data about the solubility of various carbohydrates in ionic liquids and highlight their interactions with carbohydrates. ...

Ma?gorzata Ewa Zakrzewska; Ewa Bogel-?ukasik; Rafa? Bogel-?ukasik

2010-01-07T23:59:59.000Z

206

Clean Room Orientation/Protocols  

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

shoes Shoe covers before entering gowning room Head cover, then coverall. Boots over shoe covers. Gloves If gloves get ripped or soiled during your time in...

207

Carbon Ionic Conductors for use in Novel Carbon-Ion Fuel Cells  

SciTech Connect (OSTI)

Carbon-consuming fuel cells have many potential advantages, including increased efficiency and reduced pollution in power generation from coal. A large amount of work has already been done on coal fuel cells that utilize yttria-stabilized zirconium carbide as an oxygen-ion superionic membrane material. But high-temperature fuel cells utilizing yttria-stabilized zirconium require partial combustion of coal to carbon monoxide before final oxidation to carbon dioxide occurs via utilization of the oxygen- ion zirconia membrane. A carbon-ion superionic membrane material would enable an entirely new class of carbon fuel cell to be developed, one that would use coal directly as the fuel source, without any intervening combustion process. However, a superionic membrane material for carbon ions has not yet been found. Because no partial combustion of coal would be required, a carbon-ion superionic conductor would allow the direct conversion of coal to electricity and pure CO{sub 2} without the formation of gaseous pollutants. The objective of this research was to investigate ionic lanthanide carbides, which have an unusually high carbon-bond ionicity as potential superionic carbide-ion conductors. A first step in this process is the stabilization of these carbides in the cubic structure, and this stabilization has been achieved via the preparation of pseudobinary lanthanide carbides. The diffusion rates of carbon have been measured in these carbides as stabilized to preserve the high temperature cubic structure down to room temperature. To prepare these new compounds and measure these diffusion rates, a novel, oxide-based preparation method and a new C{sup 13}/C{sup 12} diffusion technique have been developed. The carbon diffusion rates in La{sup 0.5}Er{sup 0.5}C{sub 2}, Ce{sup 0.5}Er{sup 0.5}C{sub 2}, and La{sup 0.5}Y{sup 0.5}C{sub 2}, and Ce{sup 0.5}Tm0.5C{sub 2} modified by the addition of 5 wt %Be{sub 2}C, have been determined at temperatures from 850 C to 1150 C. The resulting diffusion constants as measured were all less than 10{sup -11} cm{sup 2}/sec, and therefore these compounds are not superionic. However, there remain a large number of potentially superionic pseudobinary lanthanide compounds and a number of alternate ionic carbides which might act as dopants to produce vacancies on the carbon-ion sublattice and thereby increase carbon-ion diffusion rates. The discovery of a superionic carbon conductor would usher in a truly revolutionary new coal technology, and could dramatically improve the way in which we generate electricity from coal. The work completed to date is a promising first step towards this end.

Franklin H. Cocks; W. Neal Simmons; Paul A. Klenk

2005-11-01T23:59:59.000Z

208

Reactions of Lignin Model Compounds in Ionic Liquids  

SciTech Connect (OSTI)

Lignin, a readily available form of biomass, awaits novel chemistry for converting it to valuable aromatic chemicals. Recent work has demonstrated that ionic liquids are excellent solvents for processing woody biomass and lignin. Seeking to exploit ionic liquids as media for depolymerization of lignin, we investigated reactions of lignin model compounds in these solvents. Using Brønsted acid catalysts in 1-ethyl-3-methylimidazolium triflate at moderate temperatures, we obtained up to 11.6% yield of the dealkylation product guaiacol from the model compound eugenol and cleaved phenethyl phenyl ether, a model for lignin ethers. Despite these successes, acid catalysis failed in dealkylation of the unsaturated model compound 4-ethylguaiacol and did not produce monomeric products from organosolv lignin, demonstrating that further work is required to understand the complex chemistry of lignin depolymerization.

Holladay, John E.; Binder, Joseph B.; Gray, Michel J.; White, James F.; Zhang, Z. Conrad

2009-09-15T23:59:59.000Z

209

Elucidating graphene - Ionic Liquid interfacial region: a combined...  

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

graphene - Ionic Liquid interfacial region: a combined experimental and computational study. Elucidating graphene - Ionic Liquid interfacial region: a combined experimental and...

210

New lithium-based ionic liquid electrolytes that resist salt...  

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

New lithium-based ionic liquid electrolytes that resist salt concentration polarization New lithium-based ionic liquid electrolytes that resist salt concentration polarization...

211

Ionic Liquid Pretreatment Process for Biomass Is Successfully...  

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

Ionic Liquid Pretreatment Process for Biomass Is Successfully Implemented at Larger Scale Ionic Liquid Pretreatment Process for Biomass Is Successfully Implemented at Larger Scale...

212

SRNL - News Room  

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

Coveted R&D 100 Award Coveted R&D 100 Award ( PDF button Download printer-friendly, PDF version) SRNL Wins Coveted R&D 100 Award AIKEN, S.C. (Sept. 12, 2006) - Researchers at the Savannah River National Laboratory, along with team members from the Massachusetts Institute of Technology (MIT) and the Pacific Northwest National Laboratory, have been named winners of an R&D 100 Award for their invention, the MilliWave Thermal Analyzer. The R&D 100 awards, considered the "Oscars of research and development," are presented each year by R&D magazine to the 100 most technologically significant inventions of the year. The MilliWave Thermal Analyzer, developed by SRNL's Gene Daniel and Don Miller and their colleagues, uses millimeter-wave electromagnetic radiation for non-contact, real-time measurements of temperature, amount of energy emitted, and physical changes of materials under extreme temperatures or corrosive environments.

213

Infrared spectroscopy of ionic clusters  

SciTech Connect (OSTI)

This thesis describes new experiments wherein the infrared vibrational predissociation spectra of a number of mass-selected ionic cluster systems have been obtained and analyzed in the 2600 to 4000 cm{sup {minus}1} region. The species studied include: the hydrated hydronium ions, H{sub 3}O{sup +} (H{sub 2}O){sub 3 {minus}10}, ammoniated ammonium ions, NH{sub 4}{sup +}(NH{sub 3}){sub 1 {minus}10} and cluster ions involving both water and ammonia around an ammonium ion core, (mixed clusters) NH{sub 4}{sup +}(NH{sub 3}){sub n}(H{sub 2}O){sub m} (n+m=4). In each case, the spectra reveal well resolved structures that can be assigned to transitions arising from the vibrational motions of both the ion core of the clusters and the surrounding neutral solvent molecules. 154 refs., 19 figs., 8 tabs.

Price, J.M. (California Univ., Berkeley, CA (USA). Dept. of Chemistry Lawrence Berkeley Lab., CA (USA))

1990-11-01T23:59:59.000Z

214

Nuclear reactor control room construction  

DOE Patents [OSTI]

A control room for a nuclear plant is disclosed. In the control room, objects labelled 12, 20, 22, 26, 30 in the drawing are no less than four inches from walls labelled 10.2. A ceiling contains cooling fins that extend downwards toward the floor from metal plates. A concrete slab is poured over the plates. Studs are welded to the plates and are encased in the concrete. 6 figures.

Lamuro, R.C.; Orr, R.

1993-11-16T23:59:59.000Z

215

Nuclear reactor control room construction  

DOE Patents [OSTI]

A control room 10 for a nuclear plant is disclosed. In the control room, objects 12, 20, 22, 26, 30 are no less than four inches from walls 10.2. A ceiling 32 contains cooling fins 35 that extend downwards toward the floor from metal plates 34. A concrete slab 33 is poured over the plates. Studs 36 are welded to the plates and are encased in the concrete.

Lamuro, Robert C. (Pittsburgh, PA); Orr, Richard (Pittsburgh, PA)

1993-01-01T23:59:59.000Z

216

Electrochemical and physical analysis of a Li-ion cell cycled at elevated temperature  

SciTech Connect (OSTI)

Laboratory-size LiNi0.8Co0.15Al0.05O2/graphite lithium-ion pouch cells were cycled over 100 percent DOD at room temperature and 60 degrees C in order to investigate high-temperature degradation mechanisms of this important technology. Capacity fade for the cell was correlated with that for the individual components, using electrochemical analysis of the electrodes and other diagnostic techniques. The high-temperature cell lost 65 percent of its initial capacity after 140 cycles at 60 degrees C compared to only 4 percent loss for the cell cycled at room temperature. Cell ohmic impedance increased significantly with the elevated temperature cycling, resulting in some of loss of capacity at the C/2 rate. However, as determined with slow rate testing of the individual electrodes, the anode retained most of its original capacity, while the cathode lost 65 percent, even when cycled with a fresh source of lithium. Diagnostic evaluation of cell components including XRD, Raman, CSAFM and suggest capacity loss occurs primarily due to a rise in the impedance of the cathode, especially at the end-of-charge. The impedance rise may be caused in part by a loss of the conductive carbon at the surface of the cathode and/or by an organic film on the surface of the cathode that becomes non-ionically conductive at low lithium content.

Shim, Joongpyo; Kostecki, Robert; Richardson, Thomas; Song, Xiangyun; Striebel, Kathryn A.

2002-06-21T23:59:59.000Z

217

Ion Transport in Nanostructured Block Copolymer/Ionic Liquid Membranes  

E-Print Network [OSTI]

E. Ionic Liquids as Green Solvents: Progress and Prospectsthem attention as “green” solvents for synthesis and

Hoarfrost, Megan Lane

2012-01-01T23:59:59.000Z

218

Covered Product Category: Room Air Conditioners | Department...  

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

Specifications website. Buying Energy-Efficient Room Air Conditioners When buying room air conditioners directly from commercial sources, choose models that are ENERGY...

219

Enzyme activity in dialkylphosphate ionic liquids  

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

Enzyme activity in dialkylphosphate ionic liquids Enzyme activity in dialkylphosphate ionic liquids M. F. Thomas, L. Li, J. Handley-Pendleton, D. van der Lelie, J. J. Dunn and J. F. Wishart Bioresource Technology 102, in press. [Find paper at Science Direct] Abstract: The activity of four metagenomic enzymes and an enzyme cloned from the straw mushroom, Volvariella volvacea were studied in the following ionic liquids, 1,3-dimethylimidazolium dimethyl phosphate, [mmim][dmp], 1-ethyl-3-methylimidazolium dimethyl phosphate, [emim][dmp], 1-ethyl-3-methylimidazolium diethyl phosphate, [emim][dep] and 1-ethyl-3-methylimidazolium acetate, [emim][OAc]. Activity was determined by analyzing the hydrolysis of para-nitrobenzene carbohydrate derivatives. In general, the enzymes were most active in the dimethyl phosphate ionic

220

Superbase-derived protic ionic liquids  

DOE Patents [OSTI]

Protic ionic liquids having a composition of formula (A.sup.-)(BH.sup.+) wherein A.sup.- is a conjugate base of an acid HA, and BH.sup.+ is a conjugate acid of a superbase B. In particular embodiments, BH.sup.+ is selected from phosphazenium species and guanidinium species encompassed, respectively, by the general formulas: ##STR00001## The invention is also directed to films and membranes containing these protic ionic liquids, with particular application as proton exchange membranes for fuel cells.

Dai, Sheng; Luo, Huimin; Baker, Gary A.

2013-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Spin reorientation transition and near room-temperature multiferroic properties in a W-type hexaferrite SrZn{sub 1.15}Co{sub 0.85}Fe{sub 16}O{sub 27}  

SciTech Connect (OSTI)

In this Letter, we investigate the magnetic and multiferroic properties of a W-type hexaferrite SrZn{sub 1.15}Co{sub 0.85}Fe{sub 16}O{sub 27}. Due to the strong planar contribution to the anisotropy provided by Co{sup 2+} ions, this hexaferrite shows a spin reorientation transition from easy-axis to easy-cone at 302?K, which is different from the onset temperature of ferroelectric polarization, 275?K. By applying magnetic field, a remarkable drop of polarization is observed, suggesting a large magnetoelectric effect in this multiferroics. The difference between spin reorientation and ferroelectric phase transition temperature as well as the origin of magnetoelectric effect are discussed.

Song, Y. Q.; Fang, Y.; Wang, L. Y.; Zhou, W. P.; Cao, Q. Q.; Wang, D. H., E-mail: wangdh@nju.edu.cn; Du, Y. W. [National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, Nanjing 210093 (China)

2014-03-07T23:59:59.000Z

222

Reading Room | Department of Energy  

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

Reading Reading Room Reading Room Welcome to the Freedom of Information Act (FOIA) Electronic Reading Room for the Department of Energy at Headquarters. The FOIA requires certain kinds of documents to be made available to the public for inspection and copying. This is a requirement for agencies of the executive branch of the federal government. The documents that are required to be made available by the FOIA are: Final Opinions [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases. Office of Hearings and Appeal - FOIA Appeals Initial agency determinations in response to FOIA and Privacy Act requests may be appealed to the Office of Hearings and Appeals (OHA). Decisions of the OHA constitute the agency's final determinations on requests made under

223

Reading Room | Department of Energy  

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

Freedom of Information Act » Reading Freedom of Information Act » Reading Room Reading Room Welcome to the Freedom of Information Act (FOIA) Electronic Reading Room for the Department of Energy at Headquarters. The FOIA requires certain kinds of documents to be made available to the public for inspection and copying. This is a requirement for agencies of the executive branch of the federal government. The documents that are required to be made available by the FOIA are: Final Opinions [5 USC 552 (a)(2)](A) final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases. Office of Hearings and Appeal - FOIA Appeals Initial agency determinations in response to FOIA and Privacy Act requests may be appealed to the Office of Hearings and Appeals (OHA). Decisions of

224

Ionic liquid assisted hydrothermal fabrication of hierarchically organized ?-AlOOH hollow sphere  

SciTech Connect (OSTI)

Highlights: ? The ?-AlOOH hollow spheres were synthesized via an ionic liquid-assisted hydrothermal treatment. ? Ionic liquid plays an important role in the morphology of the product. ? Ionic liquid can be easily removed from the product and reused in next experiment. ? A “aggregation–solution–recrystallization” formation mechanism may occur in the system. -- Abstract: Hierarchically organized ?-AlOOH hollow spheres with nanoflake-like porous surface texture have been successfully synthesized via an ionic liquid-assisted hydrothermal synthesis method in citric acid monohydrate (CAMs). It was found that ionic liquid [bmim]{sup +}Cl{sup ?} played an important role in the morphology of the product due to its strong interactions with reaction particles. The samples were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Transmission Electron Microscopy (TEM). The results show that the product has narrow particle size distribution (500–900 nm particle diameter range), high specific surface area (240.5 m{sup 2}/g) and large pore volume (0.61 cm{sup 3}/g). The corresponding ?-Al{sub 2}O{sub 3} hollow spheres can be obtained by calcining it at 550 °C for 3 h. The proposed formation mechanism and other influencing factors of the ?-AlOOH hollow sphere material, such as reaction temperature, reaction duration, CAMs and urea, have also been investigated.

Tang, Zhe, E-mail: tangzhe1983@163.com [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Yunqi, E-mail: liuyq@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Li, Guangci, E-mail: liguangci1984@yahoo.com.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Hu, Xiaofu, E-mail: hjj19850922@126.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China); Liu, Chenguang, E-mail: cgliu@upc.edu.cn [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)] [State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corporation (CNPC), China University of Petroleum (East China), Qingdao 266555 (China)

2012-11-15T23:59:59.000Z

225

Strong Electronic Polarization of the C60 Fullerene by the Imidazolium-Based Ionic Liquids: Accurate Insights from Born-Oppenheimer Molecular Dynamics Simulations  

E-Print Network [OSTI]

Fullerenes are known to be polarizable due to the strained carbon-carbon bonds and high surface curvature. Electronic polarization of fullerenes is of steady practical importance, since it leads to non-additive interactions and, therefore, to unexpected phenomena. For the first time, hybrid density functional theory (HDFT) powered Born-Oppenheimer molecular dynamics (BOMD) simulations have been conducted to observe electronic polarization and charge transfer phenomena in the C60 fullerene at finite temperature (350 K). The non-additive phenomena are fostered by the three selected imidazolium-based room-temperature ionic liquids (RTILs). We conclude that although charge transfer appears nearly negligible in these systems, an electronic polarization is indeed significant leading to a systematically positive effective electrostatic charge on the C60 fullerene: +0.14e in [EMIM][Cl], +0.21e in [EMIM][NO3], +0.17e in [EMIM][PF6]. These results are, to certain extent, unexpected providing an inspiration to consider ...

Chaban, Vitaly V

2015-01-01T23:59:59.000Z

226

Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Room Air Conditioners July 1, 2012 - 5:35pm Addthis A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. A window air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/kschulze. What does this mean for me? Room air conditioners are less expensive and disruptive to install than central air conditioning systems. Room air conditioners can be a cost-effective alternative to central air conditioning systems. How does it work? Room air conditioners work by cooling one part of your home. Room or window air conditioners cool rooms rather than the entire home or business. If they provide cooling only where they're needed, room air conditioners are less expensive to operate than central units, even though

227

Classified Reading Room Instructions/Guidelines  

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

Classified Reading Room Instructions/Guidelines Classified Reading Room Instructions/Guidelines * Reading Room Points of Contact: Milesha Grier, (202) 586-8210, milesha.gier@nnsa.doe.gov Reading Room Location: DOE Forrestal Building, 1000 Independence Ave., Washington, D.C. Room 4A-045, 4 th Floor, "A" Corridor, Behind Glass Doors, dial 6-8210 Reading Room Availability: By Appointment - Reading Room will be available until RFP Closes except (12/5/11 thru 12/16/11, December 23, January 2, 2012 and January 16, 2012). Reading Room Hours: Morning, 9:00 a.m. - 11:30 a.m.; and Afternoon 1:00 p.m. - 3:30 p.m. Reading Room Will Accommodate: Up to 5-6 people * All personnel must: a. submit a formal Intent to Bid IAW Section L of the RFP, via email to: SEB1@doeal.gov

228

Media Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Media Room | National Nuclear Security Administration Media Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Media Room Home > Media Room Media Room NNSA's Office of Congressional, Intergovernmental, and Public Affairs regularly updates the web site with current press releases, newsletters,

229

DOE Solar Decathlon: Press Room  

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

Press Room Press Room The U.S. Department of Energy Solar Decathlon is an award-winning program that challenges collegiate teams to design, build, and operate solar-powered houses that are cost-effective, energy-efficient, and attractive. The winner of the competition is the team that best blends affordability, consumer appeal, and design excellence with optimal energy production and maximum efficiency. The first Solar Decathlon was held in 2002; the competition has since occurred every two years in 2005, 2007, 2009, and 2011. The last event was held at the National Mall's West Potomac Park in Washington, D.C., Sept. 23-Oct. 2, 2011. Solar Decathlon 2013 takes place Oct. 3-13, 2013, at Orange County Great Park in Irvine, California. Open to the public free of charge, the Solar Decathlon gives visitors the

230

News Room | Argonne National Laboratory  

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

News Room News Room In a 3D structure of the protein, the binding site is shown in pink, representing a potential drug target. The green molecule shows binding of an antibiotic to the protein. Click to enlarge. Image courtesy of Wladek Minor. Newly ID'd protein provides target for antibiotic-resistant hospital bacterium Full Story » Researchers have made inroads into tackling a bacterium that plagues hospitals and is highly resistant to most antibiotics. Andrey Elagin (left), postdoctoral scholar at the Enrico Fermi Institute at the University of Chicago, and Matthew Wetstein, the Grainger Postdoctoral Fellow at the Enrico Fermi Institute at the University of Chicago, adjust the optics in the Large Area Picosecond Photodetector testing facility. The facility uses extremely short laser pulses to precisely measure the time resolution of the photodetectors. Click to enlarge.

231

NETL: NewsRoom - Multimedia  

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

NewsRoom NewsRoom Multimedia Now you can download videos to your computer by right clicking the "download" link and selecting the "Save target as" option. It is suggested that mac users use this link. Carbon Cycle Animation Carbon Cycle Animation - 2012 Animation that depicts the carbon cycle as it relates to nature, land use, and energy production. Movie Icon Windows Media Video (WMV-5.7MB) [ view | download ] Earth Day Animation Earth Day Animation - 2011 A compilation of three Earth Day animations that demonstrate being green around your home, office, and community Movie Icon Windows Media Video (WMV-16MB) [ view | download ] Interview with Anthony Cugini Interview with Anthony Cugini - 2011 Interview at the International Pittsburgh Coal Conference with Dr. Cugini regarding Carbon Capture Utilization and Storage technologies.

232

Model for Configurational Thermodynamics in Ionic Systems  

Science Journals Connector (OSTI)

We develop a formalism to model configurational thermodynamics in ionic systems with multiple anion and cation species. Because cations and anions can be partitioned into two interacting sublattices that do not exchange species, the dimensionality of configuration space is significantly reduced. The result is a model applicable to many important problems in ionic systems. Here we show that the effect of an order-disorder transition in one sublattice on the other depends on how the symmetry is changed through the transition, as well as on the strength of the interactions.

P. D. Tepesch; G. D. Garbulsky; G. Ceder

1995-03-20T23:59:59.000Z

233

Ionic Liquids as Green Solvents for Alkylation and Acylation  

Science Journals Connector (OSTI)

Many clean solvents like water, ionic liquids, supercritical fluid, polyglycol, fluorine-containing solvents, and so on are employed to replace the conventional organic solvents. Among these, ionic liquids have a...

Zhongkui Zhao; Yitao Dai

2012-01-01T23:59:59.000Z

234

Organic Ionic Liquids: Ultimate Green Solvents in Organic Synthesis  

Science Journals Connector (OSTI)

Ionic liquids are ground-breaking green alternatives to the highly toxic solvents that are hazardous to the environment and ... liquids offer certain advantages as alternatives to conventional solvents. Ionic liq...

Mohammed Abid Shaikh; Xudong Huang

2012-01-01T23:59:59.000Z

235

Tribological Properties of Ionic Liquids Lubricants Containing Nanoparticles  

E-Print Network [OSTI]

is to describe the tribological and rheological properties of mixtures of nanoparticles (NPs) and ionic liquids (ILs), specifically the mixture of bare SiO_(2) (silica) nanoparticles and ionic liquid 1-butyl-3-methylimidazolium (trifluoromethysulfony...

Lu, Wei

2014-05-14T23:59:59.000Z

236

Energy Integration Visualization Room (Fact Sheet)  

SciTech Connect (OSTI)

This two-page fact sheet describes the new Energy Integration Visualization Room in the ESIF and talks about some of the capabilities and unique visualization features of the the room.

Not Available

2012-08-01T23:59:59.000Z

237

Open Data: the elephant in the room?  

E-Print Network [OSTI]

Journal of the European Association for Health Information and Libraries (November 2008) vol.4(4) pp.4-6 Open Data: the elephant in the room?(*) Peter Morgan Cambridge University Medical... elephant in the room ... is an English idiom for an obvious truth that is being ignored or goes unaddressed. It is based on the idea that an elephant in a room would be impossible to overlook; thus, people in the room who pretend the elephant...

Morgan, Peter

238

Hyperfine Effects in Ionic Orbital Electron Capture  

E-Print Network [OSTI]

The K-orbital electron capture in ions with one or two electrons is analized for a general allowed nuclear transition. For ionic hyperfine states the angular neutrino distribution and the electron capture rate are given in terms of nuclear matrix elements. A possible application towards the determination of neutrino parameters is outlined.

M. A. Goñi

2010-03-02T23:59:59.000Z

239

1,2,3-triazolium ionic liquids  

DOE Patents [OSTI]

The present invention relates to compositions of matter that are ionic liquids, the compositions comprising substituted 1,2,3-triazolium cations combined with any anion. Compositions of the invention should be useful in the separation of gases and, perhaps, as catalysts for many reactions.

Luebke, David; Nulwala, Hunaid; Tang, Chau

2014-12-09T23:59:59.000Z

240

IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND  

E-Print Network [OSTI]

operating experience. #12;ELTRON RESEARCH INC. Syngas Production Rate ­ 60 mL/min cm2 @ 900°C Equivalent O2IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND SEPARATION Presented by Tony Sammells for Hydrogen Production ­ Compositions ­ Feedstocks ­ Performance ­ Key Technical Hurdles · Membranes

Note: This page contains sample records for the topic "room temperature ionic" 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

Library Reserved Room Policy All Meeting Spaces  

E-Print Network [OSTI]

Library Reserved Room Policy All Meeting Spaces Room reservation To make a reservation for any Library meeting space, complete the room reservation form at http://library.syr.edu/services/space/form-findroom.php. In order to provide equitable access to library spaces, the Library may impose limitations on frequency

Mather, Patrick T.

242

Reading Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Reading Room | National Nuclear Security Administration Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog The National Nuclear Security Administration Reading Room Home > About Us > Our Operations > Acquisition and Project Management > Major Contract Solicitations > Environmental Program Services Contract > Reading Room

243

The New Mexico State University motion room  

Science Journals Connector (OSTI)

This article describes the construction and operation of a totally enclosed motion room capable of carrying four students. The room is used for studying motion in a rotating frame. The rotation rate can be varied from 0 to above 20 rpm. Unique features of this motion room are the 60?in. searchlight frame used for the mount and electrical connections and the two cattle watering troughs used for the motion room proper. The room built a number of years ago has not previously been described in the literature.

Harold A. Daw

1990-01-01T23:59:59.000Z

244

Last Updated 8/12/2013 Page 1 of 2 Meeting Room 2 Meeting Room 3 Meeting Room 4 Meeting Room 5 Meeting Room 6  

E-Print Network [OSTI]

Cities Light Rail Monitoring Bioretention and Rainwater Harvesting Systems Urban Trees as a LID Source Meeting Room 6 8:00 a.m.-12:00 noon Intro to LID Rainwater Harvesting 1:00-5:00 p.m. Advances in Design for CSO Communities LID Research Panel Urban Trees and Stormwater Management LID Education Approaches

Minnesota, University of

245

Modification of Deeply Buried Hydrophobic Interfaces by Ionic Surfactants  

SciTech Connect (OSTI)

Hydrophobicity, the spontaneous segregation of oil and water, can be modified by surfactants. The way this modification occurs is studied at the oil-water interface for a range of alkanes and two ionic surfactants. A liquid interfacial monolayer, consisting of a mixture of alkane molecules and surfactant tails, is found. Upon cooling, it freezes at T{sub s}, well above the alkane's bulk freezing temperature, T{sub b}. The monolayer's phase diagram, derived by surface tensiometry, is accounted for by a mixtures-based theory. The monolayer's structure is measured by high-energy X-ray reflectivity above and below T{sub s}. A solid-solid transition in the frozen monolayer, occurring approximately 3 C below T{sub s}, is discovered and tentatively suggested to be a rotator-to-crystal transition.

Ocko, B.M.; Tamam, L.; Pontoni, D.; Sapir, Z.; Yefet, S.; Sloutskin, E.; Reichert, H.; Deutsch, M.

2011-04-05T23:59:59.000Z

246

Low velocity ion stopping in binary ionic mixtures  

SciTech Connect (OSTI)

Attention is focused on the low ion velocity stopping mechanisms in multicomponent and dense target plasmas built of quasiclassical electron fluids neutralizing binary ionic mixtures, such as, deuterium-tritium of current fusion interest, proton-heliumlike iron in the solar interior or proton-helium ions considered in planetology, as well as other mixtures of fiducial concern in the heavy ion beam production of warm dense matter at Bragg peak conditions. The target plasma is taken in a multicomponent dielectric formulation a la Fried-Conte. The occurrence of projectile ion velocities (so-called critical) for which target electron slowing down equals that of given target ion components is also considered. The corresponding multiquadrature computations, albeit rather heavy, can be monitored analytical through a very compact code operating a PC cluster. Slowing down results are systematically scanned with respect to target temperature and electron density, as well as ion composition.

Tashev, Bekbolat; Baimbetov, Fazylkhan [Department of Physics, Kazakh National University, Tole Bi 96, Almaty 480012 (Kazakhstan); Deutsch, Claude [LPGP (UMR-CNRS 8578), Universite Paris XI, 91405 Orsay (France); Fromy, Patrice [Direction de l'Informatique, Universite Paris XI, 91405 Orsay (France)

2008-10-15T23:59:59.000Z

247

Modification of Deeply Buried Hydrophobic Interfaces by Ionic Surfactants  

SciTech Connect (OSTI)

Hydrophobicity, the spontaneous segregation of oil and water, can be modified by surfactants. The way this modification occurs is studied at the oil-water interface for a range of alkanes and two ionic surfactants. A liquid interfacial monolayer, consisting of a mixture of alkane molecules and surfactant tails, is found. Upon cooling, it freezes at T{sub s}, well above the alkane's bulk freezing temperature, T{sub b}. The monolayer's phase diagram, derived by surface tensiometry, is accounted for by a mixtures-based theory. The monolayer's structure is measured by high-energy X-ray reflectivity above and below T{sub s}. A solid-solid transition in the frozen monolayer, occurring approximately 3 C below T{sub s}, is discovered and tentatively suggested to be a rotator-to-crystal transition.

L Tamam; D Pontoni Z Sapir; S Yefet; S Sloutskin; B Ocko; H Reichert; M Deutsch

2011-12-31T23:59:59.000Z

248

Public Reading Room: Environmental Documents, Reports  

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

Public Reading Room: Environmental Documents, Reports Public Reading Room: Environmental Documents, Reports Public Reading Room: Environmental Documents, Reports Environmental documents and reports are available online. Hard copies are available at the Laboratory's Public Reading Room in Pojoaque, New Mexico. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Public Reading Room: Environmental Documents, Reports Online Annual Environmental Report Electronic Public Reading Room (EPRR) Plans, Procedures A listing of procedures available in the EPRR Hard copy Public Reading Room 94 Cities of Gold Road Pojoaque, NM Vie Screen reader users: click here for plain HTML Go to Google Maps Home 94 cities of gold Road, Pojoaque, NM Loading... Map Sat Ter Did you mean a different:

249

FOIA Reading Room - privacy act  

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

Reading Room - pricacy act Reading Room - pricacy act CH Frequently Requested Documents Under FOIA Administrative Electronic FOIA Form Privacy Act Advisory (Microsoft Word(tm) document) DOE-CH Government Purchase Card Cardholders: December 2012 CH Organizational Chart: Current Version Policies and Procedures - Office of Science (including Chicago Office) Office of Hearings and Appeals Decisions Department of Justice Cases and Legal Documents Department of Energy Directives DOE Office of Inspector General Reports Responses Under FOIA FY10 Management and Operating Contracts "FY2012 Laboratory Performance Report Cards" The following management and operating prime contracts under the jurisdiction of DOE-CH have been renewed and posted for your convenience. Modifications that change, delete, or add language to any portion of these contracts (referred to as "M" Mods) will be posted as expeditiously as possible after execution. It is at the discretion of the Contractors whether or not they include modifications that change the amount obligated by the Government. Ames Laboratory - Contract No. No.DE-AC02-07CH11358

250

ccsd00003793, Room temperature Peierls distortion in small diameter nanotubes  

E-Print Network [OSTI]

nanotubes D. Conn#19;etable, 1 G.-M. Rignanese, 2, 3 J.-C. Charlier, 2, 3 and X. Blase 1 1 Laboratoire de structure and electron-phonon coupling in small 4- #23; A diameter nanotubes. We show that both the C(5 the diameter decreases. These results question the origin of superconductivity in small diameter nanotubes

251

Ge-on-Si laser operating at room temperature  

E-Print Network [OSTI]

Monolithic lasers on Si are ideal for high-volume and large-scale electronic–photonic integration. Ge is an interesting candidate owing to its pseudodirect gap properties and compatibility with Si complementary metal oxide ...

Liu, Jifeng

252

Numerical modelling and analysis of a room temperature magnetic  

E-Print Network [OSTI]

are separated by channels of a heat transfer fluid. The time-dependent model solves the momentum and continuity equations of the flow of the heat transfer fluid and the coupled energy equations of the heat transfer and it was concluded that the model has energy conservation and that the solution is independent of the chosen grid

253

Generating Ultrafast Inhomogeneous Strain in Room-Temperature...  

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

Reactions A Layered Nanostructure Held Together By DNA Science Highlights Archives: 2014 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 |...

254

Ionic Liquids: Structure and Photochemical Reactions  

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

Structure and Photochemical Reactions Structure and Photochemical Reactions E. W. Castner, Jr., C. J. Margulis, M. Maroncelli, and J. F. Wishart in "Annual Reviews of Physical Chemistry, Vol. 62"; Annual Reviews, Palo Alto, CA, (2011) pp. 85-105. [Find paper at Annual Reviews] Abstract: Ionic liquids are subjects of intense current interest within the physical chemistry community. A great deal of progress has been made in just the past five years toward identifying the factors that cause these salts to have low melting points and other useful properties. Supramolecular structure and organization have emerged as important and complicated topics that may be key to understanding how chemical reactions and other processes are affected by ionic liquids. New questions are posed, and an active

255

Superoxide Electrochemistry in an Ionic Liquid Inas M. AlNashef, Matthew L. Leonard, Michael A. Matthews,* and  

E-Print Network [OSTI]

, with organic solvents as the reaction medium. Green chemistry and engineering calls for better, sustainable-temperature ionic liquids (RTILs) as substitute solvents in Green chemistry, with the emphasis on organic synthesis dissolved in two different solvent systems: (1) acetonitrile with tetraethylammonium perchlorate (TEAP

Weidner, John W.

256

Fluorescent temperature sensor  

DOE Patents [OSTI]

The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A [Los Alamos, NM; Baker, Sheila N [Los Alamos, NM; McCleskey, T Mark [Los Alamos, NM

2009-03-03T23:59:59.000Z

257

NEPA Reading Room | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Reading Room | National Nuclear Security Administration Reading Room | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog NEPA Reading Room Home > About Us > Our Operations > NNSA Office of General Counsel > National Environmental Policy Act (NEPA) > NEPA Reading Room NEPA Reading Room Welcome to the National Nuclear Security Administration's NEPA Reading

258

Solubility of carbon dioxide, nitrous oxide, ethane, and nitrogen in 1-butyl-1-methylpyrrolidinium and trihexyl(tetradecyl)phosphonium tris(pentafluoroethyl)trifluorophosphate (eFAP) ionic liquids  

Science Journals Connector (OSTI)

The density and viscosity of the ionic liquids 1-butyl-1-methylpyrrolidinium tris(pentafluoroethyl)trifluorophosphate [C1C4Pyrro][eFAP] and trihexyl(tetradecyl)phosphonium tris(pentafluoroethyl)trifluorophosphate [P66614][eFAP] were measured as a function of temperature and pressure and as a function of temperature, respectively. These two ionic liquids are more viscous than those based in the same anion associated to imidazolium cations. The effect of the addition of water on the density and viscosity of [P66614][eFAP] was studied at pressures close to atmospheric and as a function of the temperature. This ionic liquid is only partially miscible with water, its solubility being of around X H 2 O = 0.2 in the range of (303 to 315) K. Experimental values of the solubility of carbon dioxide, nitrous oxide, ethane, and nitrogen were obtained as a function of temperature and at pressures close to atmospheric. Carbon dioxide and nitrous oxide are the more soluble gases with mole fraction solubilities up to 7 · 10?2. Ethane is four times and 1.3 times less soluble than carbon dioxide in [C1C4Pyrro][eFAP] and [P66614][eFAP], respectively. Nitrogen is one order of magnitude less soluble than the others gases in the two ionic liquids studied. In order to understand behavior of the different gases with these ionic liquids, the thermodynamic functions of solvation such as enthalpy and entropy were calculated from the variation of the Henry’s law constant with temperature. It is shown that the more favorable interactions of the gases with the ionic liquid explain the larger solubility of carbon dioxide and nitrous oxide in [C1C4Pyrro][eFAP]. In the case of [P66614][eFAP], it is the less favorable entropic contribution that explains the lower solubility of ethane in this ionic liquid.

S. Stevanovic; M.F. Costa Gomes

2013-01-01T23:59:59.000Z

259

Toward a Materials Genome Approach for Ionic Liquids: Synthesis...  

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

a Materials Genome Approach for Ionic Liquids: Synthesis Guided by Ab Initio Property Maps Previous Next List Fangyong Yan, Michael Lartey, Kuldeep Jariwala, Sage Bowser,...

260

Kinetics and Solvent Effects in the Synthesis of Ionic Liquids.  

E-Print Network [OSTI]

??Ionic liquids (ILs) are being recognized as environmentally friendly ("green") solvents. However, their synthesis is often conducted in the very solvents that they will reportedly… (more)

Schleicher, Jay C.

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Ionic Liquid-Enhanced Solid State Electrolyte Interface (SEI...  

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

Liquid-Enhanced Solid State Electrolyte Interface (SEI) for Lithium Sulfur Batteries. Ionic Liquid-Enhanced Solid State Electrolyte Interface (SEI) for Lithium Sulfur Batteries....

262

A MODIFICATION OF MAUCHA'S IONIC DIAGRAM TO INCLUDE ...  

Science Journals Connector (OSTI)

ences in concentrations of ions and dif- ferences in relative proportions of ions. Though Maucha's (1932) ionic field dia- grams illustrate relative proportions of ...

2000-02-12T23:59:59.000Z

263

Using Ionic Liquids to Make Titanium Dioxide Nanotubes - Energy...  

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

Solar Photovoltaic Solar Photovoltaic Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Storage Energy Storage Find More Like This Return to Search Using Ionic Liquids to Make...

264

Compositions and methods useful for ionic liquid treatment of biomass  

SciTech Connect (OSTI)

The present invention provides for novel compositions and methods for recycling or recovering ionic liquid used in IL pretreated cellulose and/or lignocellulosic biomass (LBM).

Dibble, Dean C.; Cheng, Aurelia; George, Anthe

2014-07-29T23:59:59.000Z

265

Ionic Liquids as Novel Engine Lubricants or Lubricant Additives...  

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

Additives Ionic Liquids as Novel Engine Lubricants or Lubricant Additives Bench test results showed that compared with fully-formulated engine oils, selected low-viscosity...

266

NSTX Synchronization System Block Diagram Control Room  

E-Print Network [OSTI]

NSTX Synchronization System Block Diagram Clock Rack Control Room Junction Area MG FCPCRF Cage Test Cell West Patch Rack Test Cell East Patch Rack Darm Patch Rack CAMAC Crate CAMAC Crate CAMAC Crate' Level, and RF Balcony O 1,230 ft. 1.88 µsec Optic Rack 100 Control Room E 100 ft. .15µsec O 525 ft. .8

Princeton Plasma Physics Laboratory

267

UTEPBioinformaticsProgram Bell Hall, Room 138  

E-Print Network [OSTI]

UTEPBioinformaticsProgram Bell Hall, Room 138 The University of Texas at El Paso El Paso, TX 79968:www.bioinformatics.utep.edu UTEPBioinformatics BellHall,Room138 TheUniversityofTexasatElPaso 500W.UniversityAvenue ElPaso,TX79968 and Student Fitness Center with its two swimming pools underline the University's commitment to provide

Fuentes, Olac

268

Electrical Characterization of an RF Glow Discharge at Room Pressure  

SciTech Connect (OSTI)

A non-thermal atmospheric-like plasma source able to operate at room temperature represents, by its physical nature, a considerable potential for biological applications, given its highly accurate action and extremely controllable penetration on the surface of biological tissue. As we start up a research line into this technology, we report the electrical characterization of a room pressure plasma discharge by means of a coupling network model. The discharge is produced by a 13.56MHz commercial generator. As it is impossible to measure directly its state variables (voltage and current intensity) due to the considerable perturbation created by introducing a low impedance at the system output, then an indirect estimation of such variables is achieved from experimental diagnostics at the input, so to validate the proposed electrical model.

Perez-Martinez, J. A.; Piedad-Beneitez, A. de la [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Pena-Eguiluz, R.; Mercado-Cabrera, A.; Valencia A, R.; Barocio, S. R. [Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico); Lopez-Callejas, R.; Godoy-Cabrera, O. G.; Benitez-Read, J. S.; Pacheco-Sotelo, J. O. [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico)

2006-12-04T23:59:59.000Z

269

DOE-ID FOIA Reading Room  

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

Reading Room Reading Room READING ROOM Eectronic Freedom of Information Act, E-FOIA RECORDS UNDER THE E-FOIA The Electronic Freedom of Information Act Amendments of 1996 addresses the issues and procedural aspects of FOIA administration. The amendment: defines the term "record" as including "any information that would be an agency record subject to the requirements of the FOIA when maintained by an agency in any format, including an electronic format; addresses the form or format in which a requested record is disclosed providing the record is readily reproducible by the agency in the requestor's desired form or format; directs Federal agencies to maintain both conventional reading rooms and electronic reading rooms to meet FOIA responsibilities.

270

Los Alamos test-room results  

SciTech Connect (OSTI)

Fourteen Los Alamos test rooms have been operated for several years; this paper covers operation during the winters of 1980-81 and 1981-82. Extensive data have been taken and computer analyzed to determine performance parameters such as efficiency, solar savings fraction, and comfort index. The rooms are directly comparable because each has the same net coefficient and solar collection area and thus the same load collector ratio. Configurations include direct gain, unvented Trombe walls, water walls, phase change walls, and two sunspace geometries. Strategies for reducing heat loss include selective surfaces, two brands of superglazing windows, a heat pipe system, and convection-suppression baffles. Significant differences in both backup heat and comfort are observed among the various rooms. The results are useful, not only for direct room-to-room comparisons, but also to provide data for validation of computer simulation programs.

McFarland, R.D.; Balcomb, J.D.

1982-01-01T23:59:59.000Z

271

Ionic (Proton) Transport Hydrogen Separation Systems  

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

(Proton) (Proton) Transport Hydrogen Separation Systems Summary Session Participants -- Ionic Transport Balachandran, Balu Cornelius, Chris Fleming, Greg Glass, Robert Hartvigsen, Joseph Higgins, Richard King, David Paster, Mark Paul, Dilo Robbins, John Samells, Anthony Schwartz, Michael Schinski, Bill Smith, Ronald Van Bibber, Lawrence Zalesky, Rick Argonne National Laboratory Sandia National Laboratory Air Liquide Lawrence Livermore National Laboratory Cerametec, Inc. CeraMem Corporation Battelle, PNNL DOE Science Applications International Corporation ExxonMobil Eltron Research, Inc. ITN Energy Systems ChevronTexaco SRI Consulting SAIC ChevronTexaco Technology Ventures Performance Goals 4-5 years (5 years upper limit) (100,000 hrs is 12 years) High durability 250-350

272

Durable electrooptic devices comprising ionic liquids  

DOE Patents [OSTI]

Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3-), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N-), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N-) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C-). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.

Agrawal, Anoop (Tucson, AZ); Cronin, John P. (Tucson, AZ); Tonazzi, Juan C. L. (Tucson, AZ); Warner, Benjamin P. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM); Burrell, Anthony K. (Los Alamos, NM)

2005-11-01T23:59:59.000Z

273

Temperature effects on the electronic conductivity of single-walled carbon nanotubes  

E-Print Network [OSTI]

The room-temperature electronic conductivity and temperature dependence of conductivity were measured for samples of carbon nanotubes of three types: pristine; functionalized with a nitrobenzene covalent functionalization, ...

Mascaro, Mark Daniel

2007-01-01T23:59:59.000Z

274

Cryogenic radiometry: the problem of hydrogen condensation in detectors operated at temperatures below 4 K  

Science Journals Connector (OSTI)

Cryogenic radiometers employing a detector at liquid helium temperatures have demonstrated a much improved accuracy over those operating at room temperature. It is recommended that...

Quinn, T J; Martin, J E

1991-01-01T23:59:59.000Z

275

Phytoremediation of Ionic and Methyl Mercury P  

SciTech Connect (OSTI)

Our long-term goal is to enable highly productive plant species to extract, resist, detoxify, and/or sequester toxic heavy metal pollutants as an environmentally friendly alternative to physical remediation methods. We have focused this phytoremediation research on soil and water-borne ionic and methylmercury. Mercury pollution is a serious world-wide problem affecting the health of human and wild-life populations. Methylmercury, produced by native bacteria at mercury-contaminated wetland sites, is a particularly serious problem due to its extreme toxicity and efficient biomagnification in the food chain. We engineered several plant species (e.g., Arabidopsis, tobacco, canola, yellow poplar, rice) to express the bacterial genes, merB and/or merA, under the control of plant regulatory sequences. These transgenic plants acquired remarkable properties for mercury remediation. (1) Transgenic plants expressing merB (organomercury lyase) extract methylmercury from their growth substrate and degrade it to less toxic ionic mercury. They grow on concentrations of methylmercury that kill normal plants and accumulate low levels of ionic mercury. (2) Transgenic plants expressing merA (mercuric ion reductase) extract and electrochemically reduce toxic, reactive ionic mercury to much less toxic and volatile metallic mercury. This metal transformation is driven by the powerful photosynthetic reducing capacity of higher plants that generates excess NADPH using solar energy. MerA plants grow vigorously on levels of ionic mercury that kill control plants. Plants expressing both merB and merA degrade high levels of methylmercury and volatilize metallic mercury. These properties were shown to be genetically stable for several generations in the two plant species examined. Our work demonstrates that native trees, shrubs, and grasses can be engineered to remediate the most abundant toxic mercury pollutants. Building on these data our working hypothesis for the next grant period is that transgenic plants expressing the bacterial merB and merA genes will (a) remove mercury from polluted soil and water and (b) prevent methylmercury from entering the food chain. Our specific aims center on understanding the mechanisms by which plants process the various forms of mercury and volatilize or transpire mercury vapor. This information will allow us to improve the design of our current phytoremediation strategies. As an alternative to volatilizing mercury, we are using several new genes to construct plants that will hyperaccumulate mercury in above-ground tissues for later harvest. The Department of Energy's Oak Ridge National Laboratory and Brookhaven National Laboratory have sites with significant levels of mercury contamination that could be cleaned by applying the scientific discoveries and new phytoremediation technologies described in this proposal. The knowledge and expertise gained by engineering plants to hyperaccumulate mercury can be applied to the remediation of other heavy metals pollutants (e.g., arsenic, cesium, cadmium, chromium, lead, strontium, technetium, uranium) found at several DOE facilities.

Meagher, Richard B.

1999-06-01T23:59:59.000Z

276

THE IONIC CENTRIFUGE CAN GIVE FUSION NUCLEAR POWER  

Science Journals Connector (OSTI)

...so long as the electric field and magnetic...3. The First Discharge of the Ionic Centrifuge...low-voltage arc source of ionization...The anode of the arc is taken as zero...first type of discharge, the end plates...found when the arc current was varied...4. The Second Discharge of the Ionic Centrifuge...

Joseph Slepian

1963-01-01T23:59:59.000Z

277

Sorption of organic gases in residential rooms  

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

residential rooms residential rooms Title Sorption of organic gases in residential rooms Publication Type Journal Article LBNL Report Number LBNL-59303 Year of Publication 2007 Authors Singer, Brett C., Alfred T. Hodgson, Toshifumi Hotchi, Katherine Y. Ming, Richard G. Sextro, Emily E. Wood, and Nancy J. Brown Journal Atmospheric Environment Volume 41 Start Page Chapter Pagination 3251-3265 Keywords adsorption, hazardous air pollutants, nerve agents, sink effect, volatile organic compounds Abstract Experiments were conducted to characterize organic gas sorption in residential rooms studied ''as-is'' with furnishings and material surfaces unaltered and in a furnished chamber designed to simulate a residential room. Results are presented for 10 rooms (five bedrooms, two bathrooms, a home office, and two multi-function spaces) and the chamber. Exposed materials were characterized and areas quantified. A mixture of volatile organic compounds (VOCs) was rapidly volatilized within each room as it was closed and sealed for a 5-h Adsorb phase; this was followed by 30-min Flush and 2-h closed-room Desorb phases. Included were alkane, aromatic, and oxygenated VOCs representing a range of ambient and indoor air pollutants. Three organophosphorus compounds served as surrogates for Sarin-like nerve agents. Measured gas-phase concentrations were fit to three variations of a mathematical model that considers sorption occurring at a surface sink and potentially a second, embedded sink. The 3-parameter sink-diffusion model provided acceptable fits for most compounds and the 4-parameter two-sink model provided acceptable fits for the others. Initial adsorption rates and sorptive partitioning increased with decreasing vapor pressure for the alkanes, aromatics and oxygenated VOCs. Best-fit sorption parameters obtained from experimental data from the chamber produced best-fit sorption parameters similar to those obtained from the residential rooms

278

Intermolecular Dynamics, Interactions and Solvation in Ionic Liquids  

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

Dynamics, Interactions and Solvation in Ionic Liquids Dynamics, Interactions and Solvation in Ionic Liquids Edward W. Castner, Jr., James F. Wishart, and Hideaki Shirota Acc. Chem. Res. 40, 1217-1227 (2007). [Find paper at ACS Publications] Abstract: Ionic liquids can simultaneously assume multiple solvent roles, because they are strongly polar and polarizable solvents and binary solutions and frequently contain very hydrophobic components. When the cation and anion functional groups are tuned appropriately, ionic liquids can be used as designer solvents for a broad range of applications. In this Account, we discuss our spectroscopic studies on the intermolecular interactions, dynamics, solvation, transport, and friction in ionic liquids, as compared with information obtained from macroscopic experiments including viscometry

279

Properties of some ionic liquids based on 1-methyl-3-octylimidazolium and 4-methyl-N-butylpyridinium cations.  

E-Print Network [OSTI]

Ionic liquids as green solvents: progress and prospects.ionic liquids are “green” solvents, i.e. , environmentally

Papaiconomou, Nicolas; Yakelis, Neal; Salminen, Justin; Bergman, Robert; Prausnitz, John M.

2005-01-01T23:59:59.000Z

280

An artificial neural network to calculate pure ionic liquid densities without the need for any experimental data  

Science Journals Connector (OSTI)

Abstract In this study, a feed-forward artificial neural network, with three layers and seventeen neurons, was constructed to estimate the densities of a wide range of ionic liquid families including those based on the imidazolium, ammonium, pyridinium, pyrrolidinium, and isoquinolinium cations, together with various anions, as well as varying lengths of alkyl side chain lengths. The model is a function of the molecular weight and structure of the ionic liquid, and the system condition of temperature and pressure, which covers a temperature range of (273.15 to 393.17) K and a pressure range of (0.1 to 100) MPa. Therefore, no additional experimental data on the ionic liquid is required as input parameter(s), which makes this technique quite versatile. It was observed that the estimated values of densities of pure ionic liquids have very good agreement with the experimental data. The training correlating coefficient (R), the training performance (MSE), and the average absolute error on the training dataset were 0.99997, 6.04 × 10?6, and 0.019%, respectively. The average absolute error value on the test dataset is 0.014%.

Mohammad-Reza Fatehi; Sona Raeissi; Dariush Mowla

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Room for increased ambitions? Governing breakthrough research  

E-Print Network [OSTI]

Room for increased ambitions? Governing breakthrough research in Norway 1990 ­ 2013 Report expectations rather than creative energy. In addition, we see the need for a streamlining of the very broad

Løw, Erik

282

Golden Reading Room: FINAL Environmental Impact Statements  

Broader source: Energy.gov [DOE]

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

283

Golden Reading Room: FOIA Frequently Requested Documents  

Office of Energy Efficiency and Renewable Energy (EERE)

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

284

Golden Reading Room: Other NREL Documents  

Broader source: Energy.gov [DOE]

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

285

Data Room - Facilities - Radiation Effects Facility / Cyclotron...  

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

radiation effects beam - line. Cable passage to beam line. In addition to a 18 port bnc patch panel connecting the data room and beam line area, there are also a series of...

286

Golden Reading Room: Other NEPA Documents  

Office of Energy Efficiency and Renewable Energy (EERE)

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

287

Method for measuring surface temperature  

DOE Patents [OSTI]

The present invention relates to a method for measuring a surface temperature using is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methyl pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.

Baker, Gary A. (Los Alamos, NM); Baker, Sheila N. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM)

2009-07-28T23:59:59.000Z

288

The Advanced Photon Source main control room  

SciTech Connect (OSTI)

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

Pasky, S.

1998-07-01T23:59:59.000Z

289

Training Room Equipment Instructions Projector and TV Display  

E-Print Network [OSTI]

Training Room Equipment Instructions Projector and TV Display The control panel on the wall are connected to a training room computer and room is equipped with a keyboard, mouse and clicker. Connect USB

Crawford, T. Daniel

290

Durable electrooptic devices comprising ionic liquids  

DOE Patents [OSTI]

Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF.sub.3SO.sub.3.sup.-), bis(trifluoromethylsulfonyl)imide ((CF.sub.3SO.sub.2).sub.2N.sup.-), bis(perfluoroethylsulfonyl)imide ((CF.sub.3CF.sub.2SO.sub.2).sub.2N.sup.-) and tris(trifluoromethylsulfonyl)methide ((CF.sub.3SO.sub.2).sub.3C.sup.-). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes.

Warner, Benjamin P. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM); Burrell, Anthony K. (Los Alamos, NM)

2006-10-10T23:59:59.000Z

291

Ionic liquid binary mixtures: Promising reaction media for carbohydrate conversion into 5-hydroxymethylfurfural  

Science Journals Connector (OSTI)

Abstract The conversion of carbohydrates into 5-hydroxymethylfurfural (5-HMF) has been studied in binary mixtures of ionic liquids (ILs), using strongly acidic resin Amberlyst 15 as the catalyst. In particular, both mono- and disaccharides, such as fructose, glucose and sucrose have been investigated. Considering the favorable effect exerted by chloride-based ionic liquids in the dissolution of carbohydrates, we used binary mixtures of 1-butyl-3-methylimidazolium chloride ([bmim][Cl]) with [bmim+] based ionic liquids differing in size, shape and coordination ability of the anion ([bmim][BF4], [bmim][N(CF3SO2)2], [bmim][N(CN)2], [bmim][SbF6] and [bmim][CF3SO3]). Carbohydrate conversion in [bmim][BF4]/[bmim][Cl] binary mixtures, has been studied under both magnetic stirring and ultrasound (US) activation. The catalytic system used led to the formation of 5-hydroxymethylfurfural in good yield under mild conditions. A significant influence of IL binary mixture composition on the outcome of the target processes was evidenced. Improvements in both reaction time and temperature have been observed, under US activation.

Francesca D’Anna; Salvatore Marullo; Paola Vitale; Carla Rizzo; Paolo Lo Meo; Renato Noto

2014-01-01T23:59:59.000Z

292

Heating of a testing room by use of a hydrogen-fueled catalytic heater  

Science Journals Connector (OSTI)

Space heating experiments were carried out using flameless (catalytic) combustion of hydrogen with atmospheric oxygen on Pt and oxide catalyst pads. The heating rate required for warming of a testing room was calculated and material balance equations for oxygen depletion and steam production were derived. The following parameters have been investigated: 1. (a) change of the oxygen and water vapour contents in the testing room in comparison with the calculated values, 2. (b) the established thermal regime in the testing room is discussed in comparison with conventional heating. The following conclusions are drawn: 1. (1) The hydrogen combustion can be adjusted to produce the desired temperature level, 2. li(2) in order to maintain the oxygen concentration at the comfort level, the free ventilation in the room should be supplemented by short, periodic, forced ventilation, 3. (3) the comfort limits of humidity require the condensation of the surplus water vapour by using a suitable device.

J. Mercea; E. Grecu; T. Fodor

1981-01-01T23:59:59.000Z

293

Soft ionization of thermally evaporated hypergolic ionic liquid aerosols  

SciTech Connect (OSTI)

Isolated ion pairs of a conventional ionic liquid, 1-Ethyl-3-Methyl-Imidazolium Bis(trifluoromethylsulfonyl)imide ([Emim+][Tf2N?]), and a reactive hypergolic ionic liquid, 1- Butyl-3-Methyl-Imidazolium Dicyanamide ([Bmim+][Dca?]), are generated by vaporizing ionic liquid submicron aerosol particles for the first time; the vaporized species are investigated by dissociative ionization with tunable vacuum ultraviolet (VUV) light, exhibiting clear intact cations, Emim+ and Bmim+, presumably originating from intact ion pairs. Mass spectra of ion pair vapor from an effusive source of the hypergolic ionic liquid show substantial reactive decomposition due to the internal energy of the molecules emanating from the source. Photoionization efficiency curves in the near threshold ionization region of isolated ion pairs of [Emim+][Tf2N?] ionic liquid vapor are compared for an aerosol source and an effusive source, revealing changes in the appearance energy due to the amount of internal energy in the ion pairs. The aerosol source has a shift to higher threshold energy (~;;0.3 eV), attributed to reduced internal energy of the isolated ion pairs. The method of ionic liquid submicron aerosol particle vaporization, for reactive ionic liquids such as hypergolic species, is a convenient, thermally ?cooler? source of isolated intact ion pairs in the gas phase compared to effusive sources.

University of California; ERC, Incorporated, Edwards Air Force Base; Air Force Research Laboratory, Edwards Air Force Base; National Synchrotron Radiation Research Center (NSRRC); Koh, Christine J.; Liu, Chen-Lin; Harmon, Christopher W.; Strasser, Daniel; Golan, Amir; Kostko, Oleg; Chambreau, Steven D.; L.Vaghjiani, Ghanshyam; Leone, Stephen R.

2012-03-16T23:59:59.000Z

294

Tool Improves Electricity Demand Predictions to Make More Room...  

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

Tool Improves Electricity Demand Predictions to Make More Room for Renewables Tool Improves Electricity Demand Predictions to Make More Room for Renewables October 3, 2011 -...

295

John S. Wright Forestry Center Room Sizes, Capacities, and Rates  

E-Print Network [OSTI]

Appendix 1 John S. Wright Forestry Center Room Sizes, Capacities, and Rates Room College the Wright Center contact: Marlene Mann, Administrative Assistant Forestry and Natural Resources Voice: 765

296

Ionic conductivity and dielectric relaxation in {gamma}-irradiated TlGaTe{sub 2} crystals  

SciTech Connect (OSTI)

The switching effect, field and temperature dependences of the permittivity and conductivity of TlGaTe{sub 2} crystals subjected to various {gamma}-irradiation doses are studied. Under rather low electric fields, the phenomenon of threshold switching with an S-shaped current-voltage characteristic containing a portion with negative differential resistance is observed in the crystals. In the region of critical voltages, current and voltage oscillations and imposed modulation are observed. Possible mechanisms of switching, ionic conductivity, disorder, and electrical instability in TlGaTe{sub 2} crystals are discussed.

Sardarli, R. M., E-mail: sardarli@yahoo.com; Samedov, O. A.; Abdullayev, A. P. [National Academy of Sciences of Azerbaijan, Institute of Radiation Problems (Azerbaijan); Huseynov, E. K. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan); Salmanov, F. T.; Alieva, N. A.; Agaeva, R. Sh. [National Academy of Sciences of Azerbaijan, Institute of Radiation Problems (Azerbaijan)

2013-05-15T23:59:59.000Z

297

Comparison of Microbial Contamination Levels Among Hospital Operating Rooms and Industrial Clean Rooms  

Science Journals Connector (OSTI)

...8 6.9-9.0 Corridor outside clean room A................ 6.7 6.5-7.0 Factory area adjacent to cleanroom A............ 16.01 13.0-24.1 Clean Room B Site A..................... 1.0 0...

Martin S. Favero; John R. Puleo; James H. Marshall; Gordon S. Oxborrow

1968-03-01T23:59:59.000Z

298

RoomZoner: Occupancy-based Room-Level Zoning of a Centralized HVAC System  

E-Print Network [OSTI]

RoomZoner: Occupancy-based Room-Level Zoning of a Centralized HVAC System Tamim Sookoor & Kamin. In this paper we present a CPS that enables a centralized Heating, Ventila- tion, and Air Conditioning (HVAC application due to residential HVAC systems ac- counting for over 15% of all U.S. energy usage, making it one

Whitehouse, Kamin

299

Radiation Chemistry of Ionic Liquids: Reactivity of Primary Species  

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

Liquids: Reactivity of Primary Species Liquids: Reactivity of Primary Species James F. Wishart In "Ionic Liquids as Green Solvents: Progress and Prospects" Rogers, R. D. and Seddon, K. R. , Eds.; ACS Symp. Ser. 856, Ch. 31, pp. 381-395, American Chemical Society, Washington, DC, 2003. (ISBN 0-84123-856-1) [Information about the book] Abstract: An understanding of the radiation chemistry of ionic liquids is important for development of their applications in radioactive material processing and for the application of pulse radiolysis techniques to the general study of chemical reactivity in ionic liquids. The distribution of primary radiolytic species and their reactivities determine the yields of ultimate products and the radiation stability of a particular ionic liquid. This chapter introduces some principles of radiation chemistry and the

300

Effects of Structural Modification on Ionic Liquid Physical Properties  

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

Effect of Structural Modification on the Physical Properties Effect of Structural Modification on the Physical Properties of Various Ionic Liquids S. I. Lall-Ramnarine, J. L. Hatcher, A. Castano, M. F. Thomas, and J. F. Wishart in "ECS Transactions - Las Vegas, NV, Vol. 33, Molten Salts and Ionic Liquids 17" D. Fox et al., Eds.; The Electrochemical Society, Pennington, NJ, (2010) pp 659 - 665. [Find paper at ECS] Abstract: A few classes of ionic liquids were synthesized and investigated for their physical properties as a function of structural variation. Bis(oxalato)borate (BOB) and bis(trifluoromethylsulfonyl)imide (NTf2) ionic liquids (ILs) containing pyridinium, 4-dimethylaminopyridinium (DMAP) and pyrrolidinium cations bearing alkyl, benzyl, hydroxyalkyl and alkoxy substituents, were prepared from the corresponding halide salts. The

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


301

Design and Evaluation of Ionic Liquids as Novel Absorbents  

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

Design anD evaluation of ionic liquiDs Design anD evaluation of ionic liquiDs as novel absorbents Background There is growing concern among climate scientists that the buildup of greenhouse gases (GHG), particularly carbon dioxide (CO 2 ), in the atmosphere is affecting the global climate in ways that could have serious consequences. One approach to reducing GHG emissions is to scrub CO 2 from the flue gas of power plants and sequester it in geologic formations. Although it is technically feasible to remove CO 2 from flue gas, current processes are too expensive. New, less expensive processes are needed. This project is investigating the feasibility of using a novel class of compounds - ionic liquids - for the capture of CO 2 from the flue gas from coal and natural gas-fired power plants. The success of ionic liquids technology

302

Ionic Liquids as Green Solvents for Glycosylation Reactions  

Science Journals Connector (OSTI)

Ionic liquids are among the most promising alternatives to molecular organic solvents due to their unique properties and, in particular, are considered to be green solvents due to their nonvolatile and nonflammab...

Kaname Sasaki; Daisuke Takahashi; Kazunobu Toshima

2012-01-01T23:59:59.000Z

303

Ionic Liquids as Multifunctional Ashless Additives for Engine Lubrication  

Broader source: Energy.gov [DOE]

A group of oil-miscible ionic liquids has been developed by an ORNL-GM team as candidate lubricant additives with promising physical/chemical properties and potential multiple functionalities.

304

Kinetics and Solvent Effects in the Synthesis of Ionic Liquids  

E-Print Network [OSTI]

Ionic liquids (ILs) are being recognized as environmentally friendly ("green") solvents. However, their synthesis is often conducted in the very solvents that they will reportedly replace. This research has investigated ...

Schleicher, Jay C.

2007-12-12T23:59:59.000Z

305

Membrane Ion Channels and Ionic Hydration Energies [Abstract Only  

Science Journals Connector (OSTI)

25 November 1980 research-article Membrane Ion Channels and Ionic Hydration Energies [Abstract Only] D. T. Edmonds The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings...

1980-01-01T23:59:59.000Z

306

Effects of ionic conductivities of zirconia electrolytes on polarization properties of platinum anodes in solid oxide fuel cells  

SciTech Connect (OSTI)

To find a clue for the design of high-performance electrodes for solid oxide fuel cells (SOFCs), the polarization properties of Pt electrodes attached to zirconia electrolytes with various ionic conductivities were investigated at 800-1000[degree]C. The IR-free anodic polarization in hydrogen was greatly affected by the ionic conductivity of the electrolyte, and it obeyed the Tafel equation. The exchange current density increased in proportion to the square of the ionic conductivity for all electrolytes operated at 800-1000[degree]C, while the transfer coefficient (n[alpha][sub o] = 2) was independent of the temperature and of the conductivity of electrolytes. According to our analysis, the rate-determining step is not a simple electron transfer from oxide ions but a recombination step involving discharged oxygen atoms adsorbed on the Pt electrode/electrolyte interface; an increase in the rate of transport of oxide ions to the interface, for example, by using an electrolyte with higher-ionic conductivity, reduces the anodic overpotential greatly. 34 refs., 6 figs., 1 tab.

Uchida, Hiroyuki; Yoshida, Manabu; Watanabe, Masahiro (Yamanashi Univ., Kofu (Japan))

1995-03-09T23:59:59.000Z

307

Carbon War Room | Open Energy Information  

Open Energy Info (EERE)

War Room War Room Jump to: navigation, search Name Carbon War Room Place Washington, DC Number of employees 1-10 Website http://www.carbonwarroom.com/ Coordinates 38.8951118°, -77.0363658° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.8951118,"lon":-77.0363658,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

308

Determination of triclosan and triclocarban in environmental water samples with ionic liquid/ionic liquid dispersive liquid-liquid microextraction prior to HPLC-ESI-MS/MS  

Science Journals Connector (OSTI)

A hydrophobic ionic liquid was finely dispersed in aqueous solution along with a hydrophilic ionic liquid. Following centrifugation, the two phases aggregate to form relatively large droplets. Based on this pheno...

Ru-Song Zhao; Xia Wang; Jing Sun; Cong Hu; Xi-Kui Wang

2011-07-01T23:59:59.000Z

309

Abstract. --Practical problems encountered in a number of advanced technology applications, particularly those related to energy conversion, are discussed. Refractory ionic compounds which are  

E-Print Network [OSTI]

, particularly those related to energy conversion, are discussed. Refractory ionic compounds which are abundant, b) high temperature gas turbine blades, c) insulators in controlled thermonuclear reactors, and d how important it nance and vibronic spectra were first studied in these is to use the insight

Boyer, Edmond

310

Phase relations and phase transformations between the low-temperature iron sulfides mackinawite, greigite, and smythite  

Science Journals Connector (OSTI)

...fixation of many heavy metals in sewage sludge (Pankow & Morgan, 1979). Greigite...inside (and on the outside ?) of gas bubbles, apparently governed by surface...function of pH, temperature, and ionic strength. Environ. Sci. Technol, 13...

Ralf E. Krupp

311

Room Q data report: Test borehole data from April 1989 through November 1991  

SciTech Connect (OSTI)

Pore-pressure and fluid-flow tests were performed in 15 boreholes drilled into the bedded evaporites of the Salado Formation from within the Waste Isolation Pilot Plant (WIPP). The tests measured fluid flow and pore pressure within the Salado. The boreholes were drilled into the previously undisturbed host rock around a proposed cylindrical test room, Room Q, located on the west side of the facility about 655 m below ground surface. The boreholes were about 23 m deep and ranged over 27.5 m of stratigraphy. They were completed and instrumented before excavation of Room Q. Tests were conducted in isolated zones at the end of each borehole. Three groups of 5 isolated zones extend above, below, and to the north of Room Q at increasing distances from the room axis. Measurements recorded before, during, and after the mining of the circular test room provided data about borehole closure, pressure, temperature, and brine seepage into the isolated zones. The effects of the circular excavation were recorded. This data report presents the data collected from the borehole test zones between April 25, 1989 and November 25, 1991. The report also describes test development, test equipment, and borehole drilling operations.

Jensen, A.L. [Sandia National Labs., Albuquerque, NM (United States); Howard, C.L. [RE/SPEC, Inc., Albuquerque, NM (United States); Jones, R.L.; Peterson, T.P. [Tech. Reps., Inc., Albuquerque, NM (United States)

1993-03-01T23:59:59.000Z

312

Temperature Dependent Neutron Scattering Sections for Polyethylene  

E-Print Network [OSTI]

This note presents neutron scattering cross sections for polyethylene at 296 K, 77 K and 4 K derived from a new scattering kernel for neutron scattering off of hydrogen in polyethylene. The kernel was developed in ENDF-6 format as a set of S(alpha,beta) tables using the LEAPR module of the NJOY94 code package. The polyethylene density of states (from 0 to sub eV) adopted to derive the new kernel is presented. We compare our calculated room temperature total scattering cross sections and double differential cross sections at 232 meV at various angles with the available experimental data (at room temperature), and then extrapolate the calculations to lower temperatures (77K and 4K). The new temperature dependent scattering kernel gives a good quantitative fit to the available room temperature data and has a temperature dependence that is qualitatively consistent with thermodynamics.

Roger E. Hill; C. -Y. Liu

2003-09-05T23:59:59.000Z

313

Forensic Entomology & Taphonomy Smith Hall Room 125  

E-Print Network [OSTI]

ENTM 295T Forensic Entomology & Taphonomy Smith Hall Room 125 Monday 8:30 ­ 11:20 a.m. Fall and on the postmortem fate of human remains. Ralph Williams, Ph.D. D-ABFE Professor of Entomology Entomology, Smith B9

Ginzel, Matthew

314

Covered Product Category: Room Air Conditioners  

Broader source: Energy.gov [DOE]

FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

315

Advanced nuclear plant control room complex  

DOE Patents [OSTI]

An advanced control room complex for a nuclear power plant, including a discrete indicator and alarm system (72) which is nuclear qualified for rapid response to changes in plant parameters and a component control system (64) which together provide a discrete monitoring and control capability at a panel (14-22, 26, 28) in the control room (10). A separate data processing system (70), which need not be nuclear qualified, provides integrated and overview information to the control room and to each panel, through CRTs (84) and a large, overhead integrated process status overview board (24). The discrete indicator and alarm system (72) and the data processing system (70) receive inputs from common plant sensors and validate the sensor outputs to arrive at a representative value of the parameter for use by the operator during both normal and accident conditions, thereby avoiding the need for him to assimilate data from each sensor individually. The integrated process status board (24) is at the apex of an information hierarchy that extends through four levels and provides access at each panel to the full display hierarchy. The control room panels are preferably of a modular construction, permitting the definition of inputs and outputs, the man machine interface, and the plant specific algorithms, to proceed in parallel with the fabrication of the panels, the installation of the equipment and the generic testing thereof.

Scarola, Kenneth (Windsor, CT); Jamison, David S. (Windsor, CT); Manazir, Richard M. (North Canton, CT); Rescorl, Robert L. (Vernon, CT); Harmon, Daryl L. (Enfield, CT)

1993-01-01T23:59:59.000Z

316

Crystal Structure and Chemical Bonding of the High-Temperature Phase of AgN3  

SciTech Connect (OSTI)

The crystal structure of silver azide (AgN{sub 3}) in its high-temperature (HT) modification was determined from X-ray powder diffraction data, recorded at T = 170 {sup o}C and was further refined by the Rietveld method. The structure is monoclinic (P2{sub 1}lc (No. 14), a = 6.0756(2) {angstrom}, b = 6.1663(2) {angstrom}, c = 6.5729(2) {angstrom}, {beta} = 114.19(0){sup o}, V = 224.62(14) {angstrom}{sup 3}, Z = 4) and consists of two-dimensional Ag and N containing layers in which the silver atoms are coordinated by four nitrogen atoms exhibiting a distorted square coordination environment. These sheets are linked together by weaker perpendicular Ag-N contacts, thus forming a 4 + 2 coordination geometry around the silver atoms. The phase transition has been characterized by DTA, DSC, and measurement of the density, as well as of the ionic conductivity. Both, the room-temperature and the HT phase are electrically insulating. This fact is getting support by DFT band structure calculations within the generalized gradient approximation, using the PBE functional. On the basis of the DFT band structure, the bonding characteristics of both phases are essentially the same. Finally, the implication of the existence of a low-symmetry HT-phase in a crystalline explosive concerning decomposition mechanisms is discussed.

Schmidt,C.; Dinnebier, R.; Wedig, U.; Jansen, M.

2007-01-01T23:59:59.000Z

317

Ionic Liquids as Novel Lubricants and /or Lubricant Additives  

SciTech Connect (OSTI)

This ORNL-GM CRADA developed ionic liquids (ILs) as novel lubricants or oil additives for engine lubrication. A new group of oil-miscible ILs have been designed and synthesized with high thermal stability, non-corrosiveness, excellent wettability, and most importantly effective anti-scuffing/anti-wear and friction reduction characteristics. Mechanistic analysis attributes the superior lubricating performance of IL additives to their physical and chemical interactions with metallic surfaces. Working with a leading lubricant formulation company, the team has successfully developed a prototype low-viscosity engine oil using a phosphonium-phosphate IL as an anti-wear additive. Tribological bench tests of the IL-additized formulated oil showed 20-33% lower friction in mixed and elastohydrodynamic lubrication and 38-92% lower wear in boundary lubrication when compared with commercial Mobil 1 and Mobil Clean 5W-30 engine oils. High-temperature, high load (HTHL) full-size engine tests confirmed the excellent anti-wear performance for the IL-additized engine oil. Sequence VID engine dynamometer tests demonstrated an improved fuel economy by >2% for this IL-additized engine oil benchmarked against the Mobil 1 5W-30 oil. In addition, accelerated catalyst aging tests suggest that the IL additive may potentially have less adverse impact on three-way catalysts compared to the conventional ZDDP. Follow-on research is needed for further development and optimization of IL chemistry and oil formulation to fully meet ILSAC GF-5 specifications and further enhance the automotive engine efficiency and durability.

Qu, J. [ORNL; Viola, M. B. [General Motors Company

2013-10-31T23:59:59.000Z

318

Neutron?Scattering Investigation of the Dynamics of H 2 O Molecules in Ionic Solutions  

Science Journals Connector (OSTI)

Intermolecular frequencies (below 900 cm?1) and diffusive motions of H 2 O molecules in ionic solutions relative to water were investigated by slow neutron scattering as function of ionic size charge and concentrations and of the temperature. For solutions containing small or highly charged ions (e.g. LaCl 3 MgCl 2 LiCl and KF) vibrations which intensify with increasing concentration appear at similar frequencies to the ion?water librational and stretching frequencies of the corresponding solid hydrates. In contrast solutions containing large singly charged ions (e.g. CsCl ?KCl ) show new frequencies but these are comparatively broader and weaker. At 1° and 25°C the diffusive kinetics generally follow a delayed diffusion mechanism. Small or highly charged ions decrease the self?diffusion coefficient and increase the residence time relative to water. The low charge?to?radius ions have the inverse effect. At higher temperatures the diffusion kinetics depart from the delayed diffusion behavior. [Work supported by the Office of Saline Water Department of the Interior.

G. J. Safford; P. S. Leung; A. W. Naumann; P. C. Schaffer

1969-01-01T23:59:59.000Z

319

Degradation of Ionic Pathway in PEM Fuel Cell Cathode  

SciTech Connect (OSTI)

The degradation of the ionic pathway throughout the catalyst layer in proton exchange membrane fuel cells was studied under an accelerated stress test of catalyst support (potential hold at 1.2 V). Electrochemical behaviors of the cathode based on graphitic mesoporous carbon supported Pt catalyst were examined using electrochemical impedance spectroscopy and cyclic voltammetry. Impedance data were plotted and expressed in the complex capacitance form to determine useful parameters in the transmission line model: the double-layer capacitance, peak frequency, and ionic resistance. Electrochemical surface area and hydrogen crossover current through the membrane were estimated from cyclic voltammogram, while cathode Faradaic resistance was compared with ionic resistance as a function of test time. It was observed that during an accelerated stress test of catalyst support, graphitic mesoporous carbon becomes hydrophilic which increases interfacial area between the ionomer and the catalyst up to 100 h. However, the ionic resistance in the catalyst layer drastically increases after 100 h with further carbon support oxidation. The underlying mechanism has been studied and it was found that significant degradation of ionic pathway throughout the catalyst layer due to catalyst support corrosion induces uneven hydration and mechanical stress in the ionomer.

Park, Seh Kyu; Shao, Yuyan; Wan, Haiying; Viswanathan, Vilayanur V.; Towne, Silas A.; Rieke, Peter C.; Liu, Jun; Wang, Yong

2011-11-12T23:59:59.000Z

320

The room noise criteria (RNC) metric.  

Science Journals Connector (OSTI)

The recent ANSI S12.2:2008 room noise criteria contains both a survey and an engineering method to specify room noise criteria. The methods use A?weighting and extended NC respectively. A new metric titled like the standard room noise criteria (RNC) is included as a diagnostic tool. It is based on human hearing and more correctly assesses low?frequency sound. In particular it is sensitive to the standard deviation to random noise and/or low?frequency surging in the 16–125 Hz octave bands such as the sound that can be produced by HVAC systems or other devices. It provides a bridge between the NC and RC criteria by correctly predicting the need for the less stringent (at low frequencies) NC criteria when the HVAC system is well designed (no surging moderate standard deviation) and also correctly predicting the more stringent (at low frequencies) RC criteria when the HVAC system noise has a large standard deviation and/or surging.

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Ionic Liquids and Ionizing Radiation: Reactivity of Highly Energetic  

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

Ionizing Radiation: Reactivity of Highly Energetic Ionizing Radiation: Reactivity of Highly Energetic Species James F. Wishart J. Phys. Chem. Lett. 1, 3225-3231 (2010). [Find paper at ACS Publications] or use ACS Articles on Request View the video on this Perspective article at The Journal of Physical Chemistry Letters (5:03) Selected for the ACS Special Virtual Issue on Ionic Liquids (March 2011). Abstract: Due to their unique properties, ionic liquids present many opportunities for basic research on the interactions of radiation with materials under conditions not previously available. At the same time, there are practical applied reasons for characterizing, understanding, and being able to predict how ionic-liquid-based devices and industrial-scale systems will perform under conditions of extreme reactivity, including radiation. This

322

Methods for separating medical isotopes using ionic liquids  

SciTech Connect (OSTI)

A method for extracting a radioisotope from an aqueous solution, the method comprising: a) intimately mixing a non-chelating ionic liquid with the aqueous solution to transfer at least a portion of said radioisotope to said non-chelating ionic liquid; and b) separating the non-chelating ionic liquid from the aqueous solution. In preferred embodiments, the method achieves an extraction efficiency of at least 80%, or a separation factor of at least 1.times.10.sup.4 when more than one radioisotope is included in the aqueous solution. In particular embodiments, the method is applied to the separation of medical isotopes pairs, such as Th from Ac (Th-229/Ac-225, Ac-227/Th-227), or Ra from Ac (Ac-225 and Ra-225, Ac-227 and Ra-223), or Ra from Th (Th-227 and Ra-223, Th-229 and Ra-225).

Luo, Huimin; Boll, Rose Ann; Bell, Jason Richard; Dai, Sheng

2014-10-21T23:59:59.000Z

323

Laser sheet light flow visualization for evaluating room air flowsfrom Registers  

SciTech Connect (OSTI)

Forced air heating and cooling systems and whole house ventilation systems deliver air to individual rooms in a house via supply registers located on walls ceilings or floors; and occasionally less straightforward locations like toe-kicks below cabinets. Ideally, the air velocity out of the registers combined with the turbulence of the flow, vectoring of air by register vanes and geometry of register placement combine to mix the supply air within the room. A particular issue that has been raised recently is the performance of multiple capacity and air flow HVAC systems. These systems vary the air flow rate through the distribution system depending on the system load, or if operating in a ventilation rather than a space conditioning mode. These systems have been developed to maximize equipment efficiency, however, the high efficiency ratings do not include any room mixing effects. At lower air flow rates, there is the possibility that room air will be poorly mixed, leading to thermal stratification and reduced comfort for occupants. This can lead to increased energy use as the occupants adjust the thermostat settings to compensate and parts of the conditioned space have higher envelope temperature differences than for the well mixed case. In addition, lack of comfort can be a barrier to market acceptance of these higher efficiency systems To investigate the effect on room mixing of reduced air flow rates requires the measurement of mixing of supply air with room air throughout the space to be conditioned. This is a particularly difficult exercise if we want to determine the transient performance of the space conditioning system. Full scale experiments can be done in special test chambers, but the spatial resolution required to fully examine the mixing problem is usually limited by the sheer number of thermal sensors required. Current full-scale laboratory testing is therefore severely limited in its resolution. As an alternative, we used a water-filled scale model of a room in which whole-field supply air mixing maps of two vertical planes were measured using a Planar Laser-Induced Fluorescence (PLIF) measurement technique. Water marked with fluorescent dye was used to simulate the supply airflow; and the resulting concentrations within the water filled model show how the supply air mixes with the room air and are an analog for temperature (for thermal loads) or fresh air (for ventilation). In addition to performing experiments over a range of flow rates, we also changed register locations and examined the effects for both heating and cooling operation by changing the water density (simulating air density changes due to temperature changes) using dissolved salt.

Walker, Iain S.; Claret, Valerie; Smith, Brian

2006-04-01T23:59:59.000Z

324

Release of DRAFT RFP Headquarters Reading Room Instructions/Guidelines  

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

Release of DRAFT RFP Release of DRAFT RFP Headquarters Reading Room Instructions/Guidelines 1. Reading Room Points of Contact: 7/21 - 8/8, Mike Baehre, (202) 586-6575 8/9 - Close of Draft RFP, John Bernier, (202) 586-6416 Reading Room Availability: By Appointment - Reading Room will be available until DRAFT RFP Closes. Reading Room Hours: Morning, 9:00 a.m. - 11:30 a.m.; and Afternoon 1:00 p.m. - 3:30 p.m. Reading Room Will Accommodate: Up to 5-6 people 2. All personnel must: a. Sign-in b. Identify their Company or Firm they work for or are affiliated c. Indicate if they have a "Q" clearance 3. Personnel must stay in the Reading Room to view documents. The "A" corridor is inside a classified area and all visitors to the Reading Room must be escorted at all times.

325

Federal Energy Management Program: Covered Product Category: Room Air  

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

Room Air Conditioners to someone by E-mail Room Air Conditioners to someone by E-mail Share Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Facebook Tweet about Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Twitter Bookmark Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Google Bookmark Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Delicious Rank Federal Energy Management Program: Covered Product Category: Room Air Conditioners on Digg Find More places to share Federal Energy Management Program: Covered Product Category: Room Air Conditioners on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories Product Designation Process

326

Hanford workers begin cleaning out historic McCluskey Room  

Broader source: Energy.gov [DOE]

Workers have entered one of the most hazardous rooms at the Hanford Site in Washington state to begin final cleanup of a room that became known to workers over the years by the name of a worker...

327

Five ENERGY STAR Room Air Conditioners Fail Testing | Department...  

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

Five ENERGY STAR Room Air Conditioners Fail Testing Five ENERGY STAR Room Air Conditioners Fail Testing August 22, 2011 - 2:00pm Addthis The U.S. Department of Energy's Office of...

328

Transition from a nonionic to an ionic micelle  

Science Journals Connector (OSTI)

The present paper was motivated by an attempt to understand the transition from a nonionic to an ionic micelle from both the experimental and theoretical points of view. Small-angle neutron-scattering experiments were performed on mixed micelles of nonionic-ionic surfactants as the charge was increased in steps. Evidence for the charge condensation on the surface of the micelles is obtained. An extension of the sticky-hard-sphere model to include the Coulomb potentials is presented and used to analyze experimental results on two systems. It is concluded that this model is more appropriate than the currently used models.

V. K. Kelkar; B. K. Mishra; K. Srinivasa Rao; P. S. Goyal; C. Manohar

1991-12-15T23:59:59.000Z

329

Conductive Filler Morphology Effect on Performance of Ionic Polymer Conductive Network Composite Actuators  

E-Print Network [OSTI]

Several generations of ionic polymer metal composite (IPMC) actuators have been developed since 1992. It has been discovered that the composite electrodes which are composed of electronic and ionic conductors, have great ...

Liu, Sheng

330

Characterization of an iodine-based ionic liquid ion source and studies on ion fragmentation  

E-Print Network [OSTI]

Electrosprays are a well studied source of charged droplets and ions. A specific subclass is the ionic liquid ion source (ILIS), which produce ion beams from the electrostatically stressed meniscus of ionic liquids. ILIS ...

Fedkiw, Timothy Peter

2010-01-01T23:59:59.000Z

331

HELP ROOMS AND PRIVATE TUTORING The following list of private tutors and departmental help rooms is intended as a resource for Columbia  

E-Print Network [OSTI]

1 HELP ROOMS AND PRIVATE TUTORING The following list of private tutors and departmental help rooms is intended as a resource for Columbia students seeking extra academic help. This is all publicly available://www.columbia.edu/cu/chemistry/undergrad/tutors/index.html Help Room Schedule (Help Room Schedule (Help Room Schedule (Help Room Schedule (Spring 2013Spring 2013

Hone, James

332

Solubilities of Solutes in Ionic Liquids from a Simple Perturbed-Hard-Sphere Theory  

E-Print Network [OSTI]

Eds). Ionic liquids as Green solvents. Washington: Americanmay be useful as “green” solvents that do not pollute the

Qin, Yuan; Prausnitz, John M.

2005-01-01T23:59:59.000Z

333

MECHANICAL PROPERTIES OF Sc???Ce????Zr????O? ELECTROLYTE MATERIAL FOR INTERMEDIATE TEMPERATURE SOLID OXIDE FUEL CELLS  

E-Print Network [OSTI]

Scandia doped zirconia has been considered a candidate for electrolyte material in intermediate temperature Solid Oxide Fuel Cells (SOFCs) due to its high ionic conductivity, chemical stability and good electrochemical performance. The aim...

Lim, Wendy

2011-02-22T23:59:59.000Z

334

Xian Kong  

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

Nano Res 1 Molecular dynamics for the charging behavior of nanostructured electric double layer capacitors containing room temperature ionic liquids Xian Kong 1,2 , Diannan Lu 2...

335

Method for synthesis of titanium dioxide nanotubes using ionic liquids  

SciTech Connect (OSTI)

The invention is directed to a method for producing titanium dioxide nanotubes, the method comprising anodizing titanium metal in contact with an electrolytic medium containing an ionic liquid. The invention is also directed to the resulting titanium dioxide nanotubes, as well as devices incorporating the nanotubes, such as photovoltaic devices, hydrogen generation devices, and hydrogen detection devices.

Qu, Jun; Luo, Huimin; Dai, Sheng

2013-11-19T23:59:59.000Z

336

High performance ultracapacitors with carbon nanomaterials and ionic liquids  

DOE Patents [OSTI]

The present invention is directed to the use of carbon nanotubes and/or electrolyte structures in various electrochemical devices, such as ultracapacitors having an ionic liquid electrolyte. The carbon nanotubes are preferably aligned carbon nanotubes. Compared to randomly entangled carbon nanotubes, aligned carbon nanotubes can have better defined pore structures and higher specific surface areas.

Lu, Wen; Henry, Kent Douglas

2012-10-09T23:59:59.000Z

337

High performance batteries with carbon nanomaterials and ionic liquids  

DOE Patents [OSTI]

The present invention is directed to lithium-ion batteries in general and more particularly to lithium-ion batteries based on aligned graphene ribbon anodes, V.sub.2O.sub.5 graphene ribbon composite cathodes, and ionic liquid electrolytes. The lithium-ion batteries have excellent performance metrics of cell voltages, energy densities, and power densities.

Lu, Wen (Littleton, CO)

2012-08-07T23:59:59.000Z

338

Application of Ionic Liquids in Liquid Chromatography and Electrodriven Separation  

Science Journals Connector (OSTI)

......processing (5), solvent extraction (6, 7), electrolytes in batteries (8), metal deposition (9, 10) and gas treatment (11...Polymerized ionic liquid sorbents for CO2 separation. Energy and Fuels (2010) 24:5797-5804. 13 Ho T.D. , Canestraro A......

Yi Huang; Shun Yao; Hang Song

2013-08-01T23:59:59.000Z

339

A Furnace Temperature Regulator  

Science Journals Connector (OSTI)

Synopsis.—By making the heating coil of an electric furnace one arm of a wheatstone bridge, and combining this with a galvanometer regulator, thus keeping constant the resistance of the coil, we can, regardless of variations in the current supply, and with no attention, maintain constant the temperature of furnaces not too directly influenced by the temperature of the room, or where the surrounding air is kept constant. The power available in this regulator is relatively very great indeed; nothing has to be inserted within the furnace cavity, and the lag is practically nothing; the regulator is often almost at its best under conditions most unfavorable to other regulators. It has held a small furnace constant to 0.1° for hours at temperatures from 500° to 1400°.

Walter P. White and Leason H. Adams.

1919-07-01T23:59:59.000Z

340

Can Ionic Liquids Be Used As Templating Agents For Controlled Design of Uranium-Containing Nanomaterials?  

SciTech Connect (OSTI)

Nanostructured uranium oxides have been prepared in ionic liquids as templating agents. Using the ionic liquids as reaction media for inorganic nanomaterials takes advantage of the pre-organized structure of the ionic liquids which in turn controls the morphology of the inorganic nanomaterials. Variation of ionic liquid cation structure was investigated to determine the impact on the uranium oxide morphologies. For two ionic liquid cations, increasing the alkyl chain length increases the aspect ratio of the resulting nanostructured oxides. Understanding the resulting metal oxide morphologies could enhance fuel stability and design.

Visser, A.; Bridges, N.; Tosten, M.

2013-04-09T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

A Preliminary Study of Oxidation of Lignin from Rubber Wood to Vanillin in Ionic Liquid Medium  

E-Print Network [OSTI]

In this study, lignin was oxidised to vanillin by means of oxygen in ionic liquid (1,3-dimethylimidazolium methylsulphate) medium. The parameters of the oxidation reaction that have been investigated were the following: concentration of oxygen (5, 10, 15 and 20 ft3 h-1), reaction time (2, 4, 6, 8 and 10 h) and reaction temperature (25, 40, 60, 80 and 100{\\deg}C). The Fourier transform infrared spectroscopy, high performance liquid chromatography and ultraviolet-visible analyses were used to characterise the product. The results revealed vanillin as the product obtained via the oxidation reaction. The optimum parameters of vanillin production were 20 ft3 h-1 of oxygen for 10 h at 100{\\deg}C. In conclusion, 1,3-dimethylimidazolium methylsulphate could be used as an oxidation reaction medium for the production of vanillin from rubber wood lignin.

Shamsuri, A A

2013-01-01T23:59:59.000Z

342

Physically and chemically stable ionic liquid-infused textured surfaces showing excellent dynamic omniphobicity  

SciTech Connect (OSTI)

A fluorinated and hydrophobic ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide, effectively served as an advantageous lubricating liquid for the preparation of physically and chemically stable omniphobic surfaces based on slippery liquid-infused porous surfaces. Here, we used particulate microstructures as supports, prepared by the chemical vapor deposition of 1,3,5,7-tetramethylcyclotetrasiloxane and subsequent surface modification with (3-aminopropyl)triethoxysilane. Confirmed by SEM and contact angle measurements, the resulting IL-infused microtextured surfaces are smooth and not only water but also various low surface tension liquids can easily slide off at low substrate tilt angles of <5°, even after exposure to high temperature, vacuum, and UV irradiation.

Miranda, Daniel F.; Urata, Chihiro; Masheder, Benjamin; Dunderdale, Gary J.; Hozumi, Atsushi, E-mail: a.hozumi@aist.go.jp [National Institute of Advanced Industrial Science and Technology (AIST), 2266-98, Anagahora, Shimo-Shidami, Moriyama-ku, Nagoya, Aichi 463-8560 (Japan); Yagihashi, Makoto [Nagoya Municipal Industrial Research Institute, Rokuban, Atsuta-ku, Nagoya 456-0058 (Japan)

2014-05-01T23:59:59.000Z

343

Efficient conversion of cellulose into biofuel precursor 5-hydroxymethylfurfural in dimethyl sulfoxide–ionic liquid mixtures  

Science Journals Connector (OSTI)

Abstract In recent years, cellulose has received increasing attention as a potential material for the production of biofuels and bio-based chemicals. In this study, a new process for the efficient conversion of cellulose into 5-hydroxymethylfurfural (HMF) was developed by the use of AlCl3 as the catalyst in DMSO–ionic liquid ([BMIM]Cl) mixtures. Various reaction parameters such as reaction time, reaction temperature, solvent and catalyst dosage were investigated in detail. A high HMF yield of 54.9% was obtained from cellulose at 150 °C after 9 h in a mixed solvent of DMSO–[BMIM]Cl (10 wt.%). More importantly, the catalytic system could be reused for several times despite of the slight loss of its catalytic activity.

Shaohua Xiao; Bing Liu; Yimei Wang; Zhongfeng Fang; Zehui Zhang

2014-01-01T23:59:59.000Z

344

Temperature induced immiscibility in the NaCl?H[subscript 2]O system at high pressure  

SciTech Connect (OSTI)

High-pressure polymorphs of H{sub 2}O are a major component in many outer planets, extra solar bodies, and icy satellites. This study sought to examine the influence of ionic impurities on the phase stability, thermal expansion, and melting curve of ice VII. Powder diffraction patterns of ice VII formed from pure H{sub 2}O and 5 wt.% NaCl aqueous solutions were taken at room temperature up to 11.1 {+-} 0.3 and 26.6 {+-} 0.4 GPa, respectively. Thermal expansions, {alpha}, of all ice VII samples were recorded and modeled up to the melting point of the samples. Ice VII formed from a NaCl-bearing aqueous solution at pressures greater than 2.2 GPa and less than 500 K can be indexed by ice VII only, whereas at temperatures greater than 500 K, diffraction lines indicative of halite (NaCl) are observed and become more intense with increasing temperature and only disappear at the melting point of the high-pressure ice. This phenomenon was observed in all NaCl-bearing ice samples that were heated to greater than 500 K. The melting curves of ice VII formed from pure H{sub 2}O and a 5 wt.% NaCl aqueous solution suggest that the presence of Na{sup +} and Cl{sup -} in the ice VII structure results in a depression of the melting curve by approximately 40 K. The exsolution of halite from the NaCl-doped ice VII and the depression of the ice VII melting curve suggest that the presence of ionic impurities in ice VII may promote the formation of a self-segregating zone deep within ice-rich bodies. This zone could initiate the formation of solute-rich melt pockets that may ascend toward the surface and result in surface manifestations such as solute-bearing aqueous vents, unexplained domes/diapirism, and/or salt-rich regions.

Frank, M.R.; Scott, H.P.; Maglio, S.J.; Prakapenka, V.B.; Shen, G. (NIU); (CIW); (UC); (Indiana)

2008-10-09T23:59:59.000Z

345

The P-V-T equation of state of D2O ice VI determined by neutron powder diffraction in the range 0 < P < 2.6 GPa and 120 < T < 330 K, and the isothermal equation of state of D2O ice VII from 2 to 7 GPa at room temperature  

Science Journals Connector (OSTI)

Ice VI is an important rock-forming mineral phase in icy planetary bodies; the pressure and temperature dependence of its density have been measured using powder neutron diffraction, throughout the high-pressure stability field, to obtain an accurate equation of state parameterization. These data are used to derive other thermodynamic quantities of use in planetary modelling.

Fortes, A.D.

2012-05-16T23:59:59.000Z

346

NETL: NewsRoom - LabNotes  

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

LabNotes LabNotes NewsRoom LabNotes January 2014 Chemical Looping 101: The Basics NETL's Chemical Looping Research Facilities Oxygen Carriers in Chemical Looping Combustion Chemical Looping Modeling and Simulation Research at NETL December 2013 Foamed Cement Can Seal Tricky Oil and Gas Wells November 2013 High-Performance Rechargeable Batteries May Help Keep the Lights On Rocks Demystified in Geomechanical Properties Lab October 2013 NETL's Morgantown Supercomputer Sets a High Bar for Energy Efficiency September 2013 NETL's Energy Data Exchange (EDX): Providing Access to Quality Energy Data Sorbents Capturing CO2 Will Make Power Plants Cleaner August 2013 Collaborative Technology Demonstrates Potential in Diabetes Testing Quantifying Uncertainty in Computer Model Predictions

347

Room air monitor for radioactive aerosols  

DOE Patents [OSTI]

A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-preamplifier combination. 2 figs.

Balmer, D.K.; Tyree, W.H.

1987-03-23T23:59:59.000Z

348

Ionically Conducting Membranes for Hydrogen Production and Separation  

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

IONICALLY CONDUCTING MEMBRANES IONICALLY CONDUCTING MEMBRANES FOR HYDROGEN PRODUCTION AND SEPARATION Presented by Tony Sammells Eltron Research Inc. Boulder, Colorado www.eltronresearch.com Presented at DOE Hydrogen Separations Workshop Arlington, Virginia September 8, 2004 ELTRON RESEARCH INC. TO BE DISCUSSED * Membranes for Hydrogen Production - Compositions - Feedstocks - Performance - Key Technical Hurdles * Membranes for Hydrogen Separation - Compositions - Ex Situ vs. In Situ WGS - Performance - Key Technical Hurdles ELTRON RESEARCH INC. OVERALL SCHEME FOR CONVERTING FEEDSTOCK TO HYDROGEN WITH SIMULTANEOUS CARBON DIOXIDE SEQUESTRATION Oxygen Transport Membrane Hydrogen Transport Membrane Natural Gas Coal Biomass Syngas CO/H 2 WGS H 2 O CO 2 /H 2 1618afs.dsf H 2 CO 2 ELTRON RESEARCH INC. INCENTIVES FOR OXYGEN TRANSPORT MEMBRANES FOR

349

Ionic liquids for separation of olefin-paraffin mixtures  

DOE Patents [OSTI]

The invention is directed to an ionic liquid comprising (i) a cationic portion containing a complex of a silver (I) ion and one or more neutral ligands selected from organoamides, organoamines, olefins, and organonitriles, and (ii) an anionic portion having the chemical formula ##STR00001## wherein m and n are independently 0 or an integer of 1 or above, and p is 0 or 1, provided that when p is 0, the group --N--SO.sub.2--(CF.sub.2).sub.nCF.sub.3 subtended by p is replaced with an oxide atom connected to the shown sulfur atom. The invention is also directed to a method for separating an olefin from an olefin-paraffin mixture by passing the mixture through a layer of the ionic liquid described above.

Dai, Sheng; Luo, Huimin; Huang, Jing-Fang

2013-09-17T23:59:59.000Z

350

Ionic liquids for separation of olefin-paraffin mixtures  

DOE Patents [OSTI]

The invention is directed to an ionic liquid comprising (i) a cationic portion containing a complex of a silver (I) ion and one or more neutral ligands selected from organoamides, organoamines, olefins, and organonitriles, and (ii) an anionic portion having the chemical formula ##STR00001## wherein m and n are independently 0 or an integer of 1 or above, and p is 0 or 1, provided that when p is 0, the group --N--SO.sub.2--(CF.sub.2).sub.nCF.sub.3 subtended by p is replaced with an oxide atom connected to the shown sulfur atom. The invention is also directed to a method for separating an olefin from an olefin-paraffin mixture by passing the mixture through a layer of the ionic liquid described above.

Dai, Sheng; Luo, Huimin; Huang, Jing-Fang

2014-07-15T23:59:59.000Z

351

ESM of Ionic and Electrochemical Phenomena on the Nanoscale  

SciTech Connect (OSTI)

Operation of energy storage and conversion devices is ultimately controlled by series of intertwined ionic and electronic transport processes and electrochemical reactions at surfaces and interfaces, strongly mediated by strain and mechanical processes [1-4]. In a typical fuel cell, these include chemical species transport in porous cathode and anode materials, gas-solid electrochemical reactions at grains and triple-phase boundaries (TPBs), ionic and electronic flows in multicomponent electrodes, and chemical and electronic potential drops at internal interfaces in electrodes and electrolytes. All these phenomena are sensitively affected by the microstructure of materials from device level to the atomic scales as illustrated in Fig. 1. Similar spectrum of length scales and phenomena underpin operation of other energy systems including primary and secondary batteries, as well as hybrid systems such flow and metal-air/water batteries.

Kalinin, Sergei V [ORNL; Kumar, Amit [Pennsylvania State University; Balke, Nina [ORNL; McCorkle, Morgan L [ORNL; Guo, Senli [ORNL; Arruda, Thomas M [ORNL; Jesse, Stephen [ORNL

2011-01-01T23:59:59.000Z

352

Golden Reading Room: FOIA Requester Service Centers and Public...  

Office of Environmental Management (EM)

FOIA Requester Service Centers and Public Liaisons Golden Reading Room: FOIA Requester Service Centers and Public Liaisons U.S. Department of Energy http:energy.govmanagement...

353

IUPAC Partnership Develops Standards and a Data Retrieval System for Ionic Liquids J.W. Magee, J.A. Widegren, D.G. Archer, S.L. Outcalt, M.Frenkel, R.D. Chirico, Q. Dong, A. Laesecke,  

E-Print Network [OSTI]

temperature, have been proposed as solvents for Green Processing. In spite of the many advantages with a knowledge base to exploit these solvents. To achieve these goals in the shortest time possible and reach chemical structure, solvent properties, ionic liquids use in synthesis, reviews, reactions and catalysis

Magee, Joseph W.

354

Integrated Temperature and Humidity Control: A Unique Approach  

E-Print Network [OSTI]

as in Singapore. The results presented herein are from one of these sites, consisting of two adjacent unoccupied guest rooms in a hotel, each equipped with chilled- water fan coil units. The two, virtually identical adja- cent rooms were selected primarily... for comparing the operation and performance of the ITHC with that of a dry-bulb temperature controller (DBTC) under the exact same conditions (solar, outdoor temperature and humidity, internal loads, etc.). To obtain com- parative results, the fan coil unit...

Shah, D. J.

2000-01-01T23:59:59.000Z

355

Study of cold nuclear fusion with electrolysis at low-temperature range  

Science Journals Connector (OSTI)

We carried out an electrolysis by changing the temperature from ?80°C to room temperature in order to create a dynamic condition in the electrode. No neutron emission was observed from the palladium and the ti...

Y. Nakamitsu; M. Chiba; K. Fukushima; T. Hirose; K. Kubo; M. Fujii…

1994-01-01T23:59:59.000Z

356

Recent developments in high-temperature photonic crystals for energy conversion  

E-Print Network [OSTI]

After decades of intense studies focused on cryogenic and room temperature nanophotonics, scientific interest is also growing in high-temperature nanophotonics aimed at solid-state energy conversion. These latest extensive ...

Rinnerbauer, Veronika

357

An analysis of the impact of datacenter temperature on energy efficiency  

E-Print Network [OSTI]

The optimal air temperature for datacenters is one of ways to improve energy efficiency of datacenter cooling systems. Many datacenter owners have been interested in raising the room temperature as a quick and simple method ...

Lee, Heechang

2012-01-01T23:59:59.000Z

358

DEVELOPMENT AND SELECTION OF IONIC LIQUID ELECTROLYTES FOR HYDROXIDE CONDUCTING POLYBENZIMIDAZOLE MEMBRANES IN ALKALINE FUEL CELLS  

SciTech Connect (OSTI)

Alkaline fuel cell (AFC) operation is currently limited to specialty applications such as low temperatures and pure H{sub 2}/O{sub 2} due to the corrosive nature of the electrolyte and formation of carbonates. AFCs are the cheapest and potentially most efficient (approaching 70%) fuel cells. The fact that non-Pt catalysts can be used, makes them an ideal low cost alternative for power production. The anode and cathode are separated by and solid electrolyte or alkaline porous media saturated with KOH. However, CO{sub 2} from the atmosphere or fuel feed severely poisons the electrolyte by forming insoluble carbonates. The corrosivity of KOH (electrolyte) limits operating temperatures to no more than 80?C. This chapter examines the development of ionic liquids electrolytes that are less corrosive, have higher operating temperatures, do not chemically bond to CO{sub 2}, and enable alternative fuels. Work is detailed on the IL selection and characterization as well as casting methods within the polybenzimidazole based solid membrane. This approach is novel as it targets the root of the problem (the electrolyte) unlike other current work in alkaline fuel cells which focus on making the fuel cell components more durable.

Fox, E.

2012-05-01T23:59:59.000Z

359

Exploring former interaction qualities for tomorrow's control room design  

E-Print Network [OSTI]

.g. in power plants or industrial production plants. One essential task in operating control rooms consists by virtual control elements that are operated through desktop computers. However this kind of interaction between power and reality as stated by Jacob et al. (2008): While digitization gave control rooms more

Reiterer, Harald

360

Aerodynamics simulation of operating rooms N. El Gharbi*  

E-Print Network [OSTI]

Aerodynamics simulation of operating rooms N. El Gharbi* A. Benzaoui*R. Bennacer** * Faculty. Keywords: Operating room, aerodynamics simulation, turbulent model, comfort, Airflow, Indoor air quality distribution scheme. To ensure these optimal conditions, a study of the aerodynamics flow in a conditioned

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "room temperature ionic" 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

2012 MOLECULAR AND IONIC CLUSTERS GORDON RESEARCH CONFERENCE, JANUARY 29 - FEBRUARY 3, 2012  

SciTech Connect (OSTI)

The Gordon Research Conference on 'Molecular and Ionic Clusters' focuses on clusters, which are the initial molecular species found in gases when condensation begins to occur. Condensation can take place solely from molecules interacting with each other, mostly at low temperatures, or when molecules condense around charged particles (electrons, protons, metal cations, molecular ions), producing ion molecule clusters. These clusters provide models for solvation, allow a pristine look at geometric as well as electronic structures of molecular complexes or matter in general, their interaction with radiation, their reactivity, their thermodynamic properties and, in particular, the related dynamics. This conference focuses on new ways to make clusters composed of different kinds of molecules, new experimental techniques to investigate the properties of the clusters and new theoretical methods with which to calculate the structures, dynamical motions and energetics of the clusters. Some of the main experimental methods employed include molecular beams, mass spectrometry, laser spectroscopy (from infrared to XUV; in the frequency as well as the time domain) and photoelectron spectroscopy. Techniques include laser absorption spectroscopy, laser induced fluorescence, resonance enhanced photoionization, mass-selected photodissociation, photofragment imaging, ZEKE photoelectron spectroscopy, etc. From the theoretical side, this conference highlights work on potential surfaces and measurable properties of the clusters. The close ties between experiment, theory and computation have been a hallmark of the Gordon Research Conference on Molecular and Ionic Clusters. In the 2012 meeting, we plan to have sessions that will focus on topics including: (1) The use of cluster studies to probe fundamental phenomena; (2) Finite size effects on structure and thermodynamics; (3) Intermolecular forces and cooperative effects; (4) Molecular clusters as models for solvation; and (5) Studies of clusters at XUV light sources.

Anne McCoy

2012-02-03T23:59:59.000Z

362

Building Energy Software Tools Directory: Room Air Conditioner Cost  

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

Room Air Conditioner Cost Estimator Room Air Conditioner Cost Estimator Screen capture of Room Air Conditioner Cost Estimator The cost estimator compares high-efficiency room air conditioners to standard equipment in terms of life cycle cost. It provides an alternative to complicated building simulation models, while offering more precision than simplified estimating tools that are commonly available. The cost estimator assists decision-making regarding the purchase or replacement of room air conditioning equipment, by estimating a product�s lifetime energy cost savings at various efficiency levels. Screen Shots Keywords air conditioner, life-cycle cost, energy performance, residential buildings, energy savings Validation/Testing Internal reviews at Pacific Northwest National Laboratory.

363

ENERGY STAR Qualified Room Air Conditioners | Data.gov  

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

Room Air Conditioners Room Air Conditioners Consumer Data Apps Challenges Resources About Blogs Let's Talk Feedback Consumer You are here Data.gov » Communities » Consumer » Data ENERGY STAR Qualified Room Air Conditioners Dataset Summary Description Room Air Conditioners that have earned the ENERGY STAR are more efficient than standard models. ENERGY STAR is the trusted symbol for energy efficiency helping consumers save money and protect the environment through energy-efficient products and practices. More information on ENERGY STAR is available at www.energystar.gov. Tags {"Room Air Conditioners","Energy Star",products,"energy efficiency",efficient,"greenhouse gas emissions",climate,utility,utilities,household,savings,labels,partners,certification}

364

Understanding the effect of side groups in ionic liquids on carbon...  

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

the effect of side groups in ionic liquids on carbon-capture properties: a combined experimental and theoretical effort Previous Next List Fangyong Yan, Michael Lartey, Krishnan...

365

Synthesis and applications of imidazolium-based ionic liquids and their polymer derivatives .  

E-Print Network [OSTI]

??"Imidazolium-based ionic liquids have been increasingly used as green solvents to replace the volatile and relatively toxic organic solvents, in homogeneous and heterogeneous catalysis, materials… (more)

Oh, Woon Su, 1974-

2012-01-01T23:59:59.000Z

366

E-Print Network 3.0 - acidic supported ionic Sample Search Results  

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

Hin Hark Gan Summary: are summarized in Mate- rials and Methods and in the Supporting Material. In this work, we compute ionic... present the mesoscale chromatin model and...

367

E-Print Network 3.0 - antimony oxide ionic Sample Search Results  

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

results for: antimony oxide ionic Page: << < 1 2 3 4 5 > >> 1 IOP PUBLISHING NANOTECHNOLOGY Nanotechnology 20 (2009) 264003 (7pp) doi:10.10880957-44842026264003 Summary:...

368

E-Print Network 3.0 - artificial muscles ionic Sample Search...  

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

their tails. They may cost more than conventional... . Artificial muscles represent the holy grail for robotics researchers. Today's robots look blocky... . The ionic group is...

369

Short Time Dynamics of Ionic Liquids in AIMD-Based Power Spectra  

Science Journals Connector (OSTI)

Short Time Dynamics of Ionic Liquids in AIMD-Based Power Spectra ... A Car-Parrinello study of 1-ethyl-3-methyl-imidazolium chloride water mixture ...

Katharina Wendler; Martin Brehm; Friedrich Malberg; Barbara Kirchner; Luigi Delle Site

2012-04-04T23:59:59.000Z

370

E-Print Network 3.0 - ammonium ionic liquids Sample Search Results  

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

Atomic Data Center (CFADC) Collection: Plasma Physics and Fusion 2 "Control of protein folding and misfolding in ionic liquid media, and a conjecture on early earth biology"....

371

Project Profile: Thermally-Stable Ionic Liquid Carriers forNanopartic...  

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

as ionic liquids (ILs). Approach Illusrtation of various colored circles connected by lines. They will select an appropriate IL using a constant method of determining thermal...

372

Temperature dependence of some liquid lithium properties from the ionic pseudopotential  

E-Print Network [OSTI]

, UCRL-'L44O 444, Laurence Livermore Lab, Caleg (19~ (3) S. G. J. Fischer, et aleg Intl Conf. En n of Past Reactors i' or Safe and Relia e s. , ese sc a ur em orsc ung, a sr e, (4) P. A. Nelson, et al. , A~A- 6, Argo e National Date, Ill. , (1976) (5..., UCRL-'L44O 444, Laurence Livermore Lab, Caleg (19~ (3) S. G. J. Fischer, et aleg Intl Conf. En n of Past Reactors i' or Safe and Relia e s. , ese sc a ur em orsc ung, a sr e, (4) P. A. Nelson, et al. , A~A- 6, Argo e National Date, Ill. , (1976) (5...

Engel, Anthony Wells

2012-06-07T23:59:59.000Z

373

About Influence of Ionic Beams of Metals of IVB-VIB Groups on Structure and Properties of a Target at Various Modes of Irradiation  

SciTech Connect (OSTI)

A complex of special properties of materials and a threshold of their working temperatures which is frequently limited 500-550 degree sign C define the level of modern technological development and, first of all, for nuclear-industrial plants. The alloys on the basis of iron are the most widespread kind of constructional materials, and therefore an increase of their special properties (high-temperature strength, corrosion stability, durability and other characteristics) is of great value. The ionic beams with a low energy (300-1,500 eV) which can change the structure and the properties of a target, in particular iron and its alloys were used for the solution of these problems in the present work. In this work theoretical and experimental results of the research of the process of impact interaction of the ionic beams with iron are also given. The properties of a iron surface with the help of modern methods of physical and chemical analyse are investigated. The opportunities to produce new surface properties of iron using the ionic beams are shown. On the basis of the results obtained the supplementary work directions are analyzed.

Kurbatova, E. I.; Klimanov, V. A.; Ksenofontov, A. I.; Fridlyander, I. N. [Moscow Engineering Physics Institute, 31 Kashirskoe shosse, Moscow, 115409 (Russian Federation)

2006-08-03T23:59:59.000Z

374

Gain switching and oscillations in an ionic pulsed xenon laser  

Science Journals Connector (OSTI)

The output of a visible ionic pulsed xenon laser excited with a FWHM nearly flat current pulse was analysed through time-resolved spectroscopy. It was observed that near threshold, the output consisted of a multipulse pattern within the duration of the current pulse. Beside this, a study of the spontaneous emission of the laser lines was carried out as a function of discharge current. This work reports the main characteristics of this kind of output and proposes a simplified model based on excitation - de-excitation processes by electron impact and gain modulation that reproduces the main experimental results.

H Sobral; D Schinca; R Duchowicz; M Gallardo

1996-01-01T23:59:59.000Z

375

Hydrogen Fluoride Capture by Imidazolium Acetate Ionic Liquid  

E-Print Network [OSTI]

Extraction of hydrofluoric acid (HF) from oils is a drastically important problem in petroleum industry, since HF causes quick corrosion of pipe lines and brings severe health problems to humanity. Some ionic liquids (ILs) constitute promising scavenger agents thanks to strong binding to polar compounds and tunability. PM7-MD simulations and hybrid density functional theory are employed here to consider HF capture ability of ILs. Discussing the effects and impacts of the cation and the anion separately and together, I will evaluate performance of imidazolium acetate and outline systematic search guidelines for efficient adsorption and extraction of HF.

Chaban, Vitaly

2015-01-01T23:59:59.000Z

376

Glyphosate-Based Herbicidal Ionic Liquids with Increased Efficacy  

Science Journals Connector (OSTI)

Greenhouse testing indicated that while at a higher application rate of 360 g/ha the efficacy of all the HILs was comparable to the commercial herbicide control, at a lower application rate of 180 g/ha, the efficacy of all HILs was as much as two and a half to three times higher when compared to the commercial formulation, and the dianionic glyphosates were the most effective. ... In field trials, all but one of the tested HILs demonstrated excellent efficacy. ... Laboratory regrowth tests established that the ionic liquids of glyphosate are efficiently translocated to rhizomes preventing the regrowth of plants. ...

Juliusz Pernak; Micha? Niemczak; Rafa? Giszter; Julia L. Shamshina; Gabriela Gurau; O. Andreea Cojocaru; Tadeusz Praczyk; Katarzyna Marcinkowska; Robin D. Rogers

2014-11-04T23:59:59.000Z

377

Pressure &Pressure & TemperatureTemperature  

E-Print Network [OSTI]

to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer to measure air temperature.measure air temperature.measure air temperature.measure air temperature

California at Santa Cruz, University of

378

Highly temperature insensitive quantum cascade lasers  

SciTech Connect (OSTI)

An InP based quantum cascade laser (QCL) heterostructure emitting around 5 {mu}m is grown with gas-source molecular beam epitaxy. The QCL core design takes a shallow-well approach to maximize the characteristic temperatures, T{sub 0} and T{sub 1}, for operations above room temperature. A T{sub 0} value of 383 K and a T{sub 1} value of 645 K are obtained within a temperature range of 298-373 K. In room temperature continuous wave operation, this design gives a single facet output power of 3 W and a wall plug efficiency of 16% from a device with a cavity length of 5 mm and a ridge width of 8 {mu}m.

Bai, Y.; Bandyopadhyay, N.; Tsao, S.; Selcuk, E.; Slivken, S.; Razeghi, M. [Department of Electrical Engineering and Computer Science, Center for Quantum Devices, Northwestern University, Evanston, Illinois 60208 (United States)

2010-12-20T23:59:59.000Z

379

Influence of magnetic field on laser-produced barium plasmas: Spectral and dynamic behaviour of neutral and ionic species  

SciTech Connect (OSTI)

The expansion dynamics and spectral behaviour of plasma produced by a Nd:YAG laser (??=?1.064??m, pulse width: 8?ns) from barium target and expanding in 0.45?T transverse magnetic field in vacuum (10{sup ?5?}Torr pressure) are investigated using time-of-flight optical emission spectroscopy. The experiments are carried out at various laser fluences from 12 to 31?J/cm{sup 2}. The temporal profiles of neutral (Ba I 553.5 and 577.7?nm) lines are temporally broadened, while that of ionic (Ba II 413.0 and 455.4?nm) lines show strong confinement in the presence of a magnetic field. In the absence of magnetic field, the temporal profile of Ba I 553.5?nm is exactly reproduced by fitting with two Shifted Maxwell Boltzmann (SMB) Distribution components, while in the presence of a magnetic field the profile could only be fitted with three components. The field enhanced and field induced SMB components of neutral profile are correlated with populations of ground state, metastable states, and long-lived Rydberg states present in the barium plasma, while SMB components of ionic lines are explained on the basis of the presence of super-elastic collisions among the excited species in the plasma. The spatial variation of electron temperature and temporal variation of electron density are deduced and correlated to the different collisional processes in the barium plasma. The ionic profiles show efficient confinement in the presence of a magnetic field at higher fluences.

Raju, Makaraju Srinivasa; Gopinath, Pramod, E-mail: pramod@iist.ac.in [Department of Physics, Indian Institute of Space Science and Technology, Thiruvananthapuram 695547 (India); Singh, R. K.; Kumar, Ajai [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2014-10-21T23:59:59.000Z

380

Abstract A196: Characterization of stability and biological activity of the cancer gene therapy biologic SNS01 following storage at ambient and freezing temperatures  

Science Journals Connector (OSTI)

...ambient and freezing temperatures Catherine Taylor 1...Zhongda Liu 1 Zhong Sun 1 Richard Dondero 2...monitoring changes in size distribution, polydispersity...as 48 hours at room temperature with no significant...relatively stable at room temperature and was also found...

Catherine Taylor; Bin Ye; Zhongda Liu; Zhong Sun; Richard Dondero; Bruce Galton; John Lust; Kathleen Donovan; and John Thompson

2009-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Amino Acid-Functionalized Ionic Liquid Solid Sorbents for Post-Combustion Carbon Capture  

Science Journals Connector (OSTI)

Amino Acid-Functionalized Ionic Liquid Solid Sorbents for Post-Combustion Carbon Capture ... Amino acid ionic liquids (AAILs) are potential green substitutes of aqueous amine solutions for carbon dioxide (CO2) capture. ... However, the viscous nature of AAILs greatly hinders their further development in CO2 capture applications. ...

Xianfeng Wang; Novruz G. Akhmedov; Yuhua Duan; David Luebke; David Hopkinson; Bingyun Li

2013-08-08T23:59:59.000Z

382

WHEN IT COMES TO SOLVENTS, IONIC LIQUIDS are in a class by themselves. Compared to other  

E-Print Network [OSTI]

are a groundbreaking green alternative to highly toxic solvents capable of causing signifi- cant environmental harm WITTKOP IONIC LIQUIDS: THE GREEN SUPER-SOLVENTS AUTHOR: DEAN L. MASKEVICH is editor of NJIT Magazine. #12WHEN IT COMES TO SOLVENTS, IONIC LIQUIDS are in a class by themselves. Compared to other solvents

Bieber, Michael

383

Short Communication Bioreduction and precipitation of uranium in ionic liquid aqueous  

E-Print Network [OSTI]

with uranium from mining and milling operations, radioactive wastes, and from nuclear accidents is a majorShort Communication Bioreduction and precipitation of uranium in ionic liquid aqueous solution t s Uranium forms various complexes with ionic liquids. Uranium bioreduction was affected by the type

Ohta, Shigemi

384

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach Tomer, 1000 Ljubljana, Slovenia (Dated: November 19, 2014) We study the surface tension of ionic solutions expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical

Andelman, David

385

Millisecond switching in solid state electrochromic polymer devices fabricated from ionic self-assembled multilayers  

E-Print Network [OSTI]

Millisecond switching in solid state electrochromic polymer devices fabricated from ionic self The electrochromic switching times of solid state conducting polymer devices fabricated by the ionic self shown to decrease with the active area of the electrochromic device suggesting that even faster

Heflin, Randy

386

Method of purifying a gas stream using 1,2,3-triazolium ionic liquids  

DOE Patents [OSTI]

A method for separating a target gas from a gaseous mixture using 1,2,3-triazolium ionic liquids is presented. Industrial effluent streams may be cleaned by removing carbon dioxide from the stream by contacting the effluent stream with a 1,2,3-triazolium ionic liquid compound.

Luebke, David; Nulwala, Hunald; Tang, Chau

2014-12-09T23:59:59.000Z

387

Efficient Conversion of Fructose to 5-Hydroxymethylfurfural Catalyzed by Sulfated Zirconia in Ionic Liquids  

Science Journals Connector (OSTI)

Efficient Conversion of Fructose to 5-Hydroxymethylfurfural Catalyzed by Sulfated Zirconia in Ionic Liquids ... An efficient process was developed for the dehydration of fructose to 5-hydroxymethylfurfural (5-HMF) in the ionic liquid (IL) 1-butyl-3-methyl imidazolium chloride ([BMIM][Cl]) by using sulfated zirconia as catalyst. ... Sulfated Mesoporous Niobium Oxide Catalyzed 5-Hydroxymethylfurfural Formation from Sugars ...

Xinhua Qi; Haixin Guo; Luyang Li

2011-05-31T23:59:59.000Z

388

Covered Product Category: Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Covered Product Category: Room Air Conditioners October 7, 2013 - 10:40am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases For the most up-to-date efficiency levels required by ENERGY STAR, look for

389

Demonstration of Intelligent Control and Fan Improvements in Computer Room  

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

Demonstration of Intelligent Control and Fan Improvements in Computer Room Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Title Demonstration of Intelligent Control and Fan Improvements in Computer Room Air Handlers Publication Type Report Refereed Designation Unknown LBNL Report Number LBNL-6007E Year of Publication 2012 Authors Coles, Henry C., Steve E. Greenberg, and Corrine Vita Document Number LBNL-6007E Date Published 12/2012 Publisher Lawrence Berkeley National Laboratory City Berkeley, CA Keywords air distribution, building technology and urban systems department, computer room air handler, crah control, data center, data center crah, ec fan, ecm, ecm fan, fan speed control, high tech and industrial systems group, plug fan, variable frequency drive, vfd, wireless control Abstract

390

Covered Product Category: Room Air Conditioners | Department of Energy  

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

Room Air Conditioners Room Air Conditioners Covered Product Category: Room Air Conditioners October 7, 2013 - 10:40am Addthis ENERGY STAR Qualified Products FEMP provides acquisition guidance across a variety of product categories, including room air conditioners, which are an ENERGY STAR®-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR. Performance Requirements for Federal Purchases For the most up-to-date efficiency levels required by ENERGY STAR, look for

391

MODELING OF HEAT TRANSFER IN ROOMS IN THE MODELICA  

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

MODELING MODELING OF HEAT TRANSFER IN ROOMS IN THE MODELICA "BUILDINGS" LIBRARY Michael Wetter, Wangda Zuo, Thierry Stephane Nouidui Simulation Research Group, Building Technologies Department Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory Berkeley, CA 94720, USA ABSTRACT This paper describes the implementation of the room heat transfer model in the free open-source Modelica "Buildings" library. The model can be used as a single room or to compose a multizone building model. We discuss how the model is de- composed into submodels for the individual heat transfer phenomena. We also discuss the main physical assumptions. The room model can be parameterized to use di↵erent modeling assump- tions, leading to linear or non-linear di↵erential algebraic systems of equations. We present nu- merical experiments that show

392

WIPP Reaches Milestone „ First Disposal Room Filled  

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

WIPP Reaches Milestone - First Disposal Room Filled CARLSBAD, N.M., September 4, 2001 - The U.S. Department of Energy's (DOE) Carlsbad Field Office today announced that Room 7 of Panel 1 at the Waste Isolation Pilot Plant (WIPP), the first underground room used for disposal operations, has been filled to capacity with transuranic waste. The milestone was reached at about 3:30 p.m. on August 24, as Waste Handling personnel emplaced a shipment of waste from the Idaho National Engineering and Environmental Laboratory. On August 25, Underground Operations personnel completed installation of a chain link mesh barrier and cloth drape across the entrance to the room to officially declare the area "closed." The first shipment of waste, which came

393

Dorm Room Idea Now Revolutionizing Energy | Department of Energy  

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

Dorm Room Idea Now Revolutionizing Energy Dorm Room Idea Now Revolutionizing Energy Dorm Room Idea Now Revolutionizing Energy April 16, 2010 - 11:07am Addthis Joshua DeLung What does this project do? Princeton Power Systems is currently installing a 200-kW solar array and advanced battery system on company grounds to provide clean power to its building and to showcase advancements in renewable energy technology to businesses, municipalities and utilities that may be curious about renewable energy projects. While many college students might spend their time playing Ultimate Frisbee or enjoying the nightlife, Darren Hammell and several other Princeton University classmates transformed an idea fostered in a dorm room into one of the fastest-growing businesses in the energy industry, creating jobs and

394

Virtual Reading Room prior to 2000 | National Nuclear Security  

National Nuclear Security Administration (NNSA)

prior to 2000 | National Nuclear Security prior to 2000 | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Virtual Reading Room prior to 2000 Home > About Us > Our Operations > NNSA Office of General Counsel > Freedom of Information Act (FOIA) > Virtual Reading Room prior to 2000 Virtual Reading Room prior to 2000 Printer-friendly version Printer-friendly version

395

Golden Reading Room: FINAL Environmental Assessments (EAs) and FONSIs  

Broader source: Energy.gov [DOE]

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

396

Grid Support for Collaborative Control Room in Fusion Science  

Science Journals Connector (OSTI)

The National Fusion Collaboratory project seeks to enable fusion scientists to exploit Grid capabilities in support of experimental science. To this end we are exploring the concept of a collaborative control room that harnesses Grid and collaborative ...

K. Keahey; M. E. Papka; Q. Peng; D. Schissel; G. Abla; T. Araki; J. Burruss; E. Feibush; P. Lane; S. Klasky; T. Leggett; D. Mccune; L. Randerson

2005-10-01T23:59:59.000Z

397

Golden Reading Room: Office of Acquisition Documents, Small Purchases  

Broader source: Energy.gov [DOE]

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

398

FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman  

E-Print Network [OSTI]

AUDITORY MODELLING FOR ASSESSING ROOM ACOUSTICS Jasper van Dorp Schuitman #12;Auditory modelling Promoties, in het openbaar te verdedigen op donderdag 15 september 2011 om 10:00 uur door Jasper VAN DORP

399

Golden Reading Room: NREL Environmental and NEPA Documents  

Broader source: Energy.gov [DOE]

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

400

Modeling control room crews for accident sequence analysis  

E-Print Network [OSTI]

This report describes a systems-based operating crew model designed to simulate the behavior of an nuclear power plant control room crew during an accident scenario. This model can lead to an improved treatment of potential ...

Huang, Y. (Yuhao)

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Golden Reading Room: FOIA Proactive Disclosures and Contracts  

Office of Energy Efficiency and Renewable Energy (EERE)

Below are electronic versions of Golden Field Office Reading Room documents that were created after November 1, 1996, per the requirements of the Electronic Freedom of Information Act Amendment of...

402

Effects of foamed plastic insulation on severity of room fires  

Science Journals Connector (OSTI)

The results of a series of full scale room burn experiments with foamed plastic insulation in two walls indicate that the severity ... appear to be increased by the addition of foamed plastic insulation.

K. K. Choi

1986-02-01T23:59:59.000Z

403

Clean Room Challenge: Nanoscientist Quiz 1 | GE Global Research  

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

Nanoscientist Quiz 1 Clean Room Challenge: Nanoscientist Quiz 1 Ron Olson 2011.03.23 Hello everybody As you know, I have been sharing with you a series of videos discussing the...

404

Virtual Reading Room after to 2000 | National Nuclear Security  

National Nuclear Security Administration (NNSA)

after to 2000 | National Nuclear Security after to 2000 | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Virtual Reading Room after to 2000 Home > About Us > Our Operations > NNSA Office of General Counsel > Freedom of Information Act (FOIA) > Virtual Reading Room after to 2000 Virtual Reading Room after to 2000 Printer-friendly version Printer-friendly version

405

Spectral Collection of Polyethylene Pellets at nearly Cryogenic Temperature to Improve Selectivity of Raman Measurement  

SciTech Connect (OSTI)

Raman spectroscopy has been extensively used for analysis of diverse polymer samples. Normally, Raman spectral collection of samples is routinely performed at room temperature for convenience. However, the feasibility of improving spectral selectivity and the resulting quantitative accuracy, when samples are measured at nearly cryogenic temperature, has not been investigated. For this purpose, we attempted to measure the density of polyethylene (PE) pellets at cryogenic temperatures and the resulting accuracies were compared with that from room temperature measurement. Initially, each of 25 PE sample was allowed to cool down to cryogenic temperature and the corresponding Raman spectra were continuously collected while the temperature of sample increased. When the temperature of sample was at cryogenic temperature, the resulting band widths were narrower compared to those at room temperature, thereby improving the accuracy of density measurement. In overall, the proposed Raman scheme is simple and efficient; therefore, it could be further applied for analysis of other polymers.

Kim, Saetbyeol; Lee, Sanguk; Hwang, Jinyoung; Chung, Hoeil [Analytical Spectroscopy Lab, Department of Chemistry, Hanyang University, Seoul, 133-791 (Korea, Republic of)

2010-08-06T23:59:59.000Z

406

Synthesis, Characterization, and Thermophysical Properties of 1,8-Diazobicyclo[5.4.0]undec-7-ene Based Thiocyanate Ionic Liquids  

Science Journals Connector (OSTI)

This work was supported by PETRONAS Ionic Liquids Centre (PILC). ... We acknowledge all of the research officers in PILC for helping with the analysis of the ionic liquids. ...

Kallidanthiyil Chellappan Lethesh; Syed Nasir Shah; M. I. Abdul Mutalib

2014-05-29T23:59:59.000Z

407

An Analysis of Efficiency Improvements in Room Air Conditioner  

E-Print Network [OSTI]

NAECA NATIONAL APPLIANCE ENERGY CONSERVATION ACT NBS NATIONAL BUREAU OF STANDARDS NECPA NATIONAL ENERGY CONSERVATION POLICY ACT NTU NUMBER OF TRANSFER UNITS OEM ORIGINAL EQUIPMENT MANUFACTURER ORNL OAK RIDGE NATIONAL LABORATORY RAC ROOM AIR CONDITIONER.... There are two public domain models that we have considered using for this analysis: the Oak Ridge National Laboratory (ORNL) heat pump model [1] and the Arthur D. Little (ADL) room air conditioner model [2]. The ORNL model was completed in 1981. Although...

O'Neal, D. L.; Penson, S. B.

1988-01-01T23:59:59.000Z

408

NETL: IEP – Post-Combustion CO2 Emissions Control - Ionic Liquids  

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

Ionic Liquids Ionic Liquids Project No.: FC26-07NT43091 Model of CO2 absorption by an ionic liquid. Model of CO2 absorption by an IL. The model shows that the anions are controlling absorption in ILs. The green units represent anions and the grey units represent cations. The University of Notre Dame is conducting the Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO2 Capture project (FC26-07NT43091), that builds on the work of its earlier project (FG26-04NT42122), to provide a comprehensive evaluation of the feasibility of using a novel class of compounds - ionic liquids (ILs) - for the capture of carbon dioxide (CO2) from the flue gas of coal-fired power plants. Initial efforts focused on "proof-of-concept" exploration, followed by a laboratory-/bench-scale effort. ILs include a broad category

409

The radiation chemistry of ionic liquids and its implications for their use  

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

radiation chemistry of ionic liquids and its implications for their use radiation chemistry of ionic liquids and its implications for their use in nuclear fuel processing J. F. Wishart and I. A. Shkrob in "Ionic Liquids: From Knowledge to Application" Rogers, R. D., Plechkova, N. V., and Seddon, K. R., Eds.; ACS Symp. Ser. 1030, Ch. 8, American Chemical Society, Washington, DC, 2009, pp 119-134. (ISBN 978-0-8412-6997-2) [Find chapter at ACS Publications] Abstract: Using ionic liquids as a medium for the processing of spent nuclear fuel, where their safety and process improvement advantages could be significant, promises to substantially contribute to the development of advanced nuclear fuel cycles to improve the world's energy posture. It is therefore important to study the radiation chemistry of ionic liquids, to determine

410

Using a Research Simulator for Validating Control Room Modernization Concepts  

SciTech Connect (OSTI)

The Light Water Reactor Sustainability Program is a research, development, and deployment program sponsored by the United States Department of Energy. The program is operated in close collaboration with industry research and development programs to provide the technical foundations for licensing and managing the long-term, safe, and economical operation of nuclear power plants that are currently in operation. Advanced instrumentation and control (I&C) technologies are needed to support the continued safe and reliable production of power from nuclear energy systems during sustained periods of operation up to and beyond their expected licensed lifetime. This requires that new capabilities to achieve process control be developed and eventually implemented in existing nuclear control rooms. It also requires that approaches be developed and proven to achieve sustainability of I&C systems throughout the period of extended operation. Idaho National Laboratory (INL) is working closely with nuclear utilities to develop technologies and solutions to help ensure the safe life extension of current reactors. One of the main areas of focus is control room modernization. Current analog control rooms are growing obsolete, and it is difficult for utilities to maintain them. Using its reconfigurable control room simulator adapted from a training simulator, INL serves as a neutral test bed for implementing new control room system technologies and assisting in control room modernization efforts across.

Ronald L. Boring; Vivek Agarwal; Julius J. Persensky; Jeffrey C. Joe

2012-05-01T23:59:59.000Z

411

Viscoelastic Properties, Ionic Conductivity, and Materials Design Considerations for Poly(styrene-b-ethylene oxide-b-styrene)-Based Ion Gel Electrolytes  

SciTech Connect (OSTI)

The viscoelastic properties and ionic conductivity of ion gels based on the self-assembly of a poly(styrene-b-ethylene oxide-b-styrene) (SOS) triblock copolymer (M{sub n,S} = 3 kDa, M{sub n,O} = 35 kDa) in the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide ([EMI][TFSA]) were investigated over the composition range of 10-50 wt % SOS and the temperature range of 25-160 C. The poly(styrene) (PS) end-blocks associate into micelles, whereas the poly(ethylene oxide) (PEO) midblocks are well-solvated by this ionic liquid. The ion gel with 10 wt % SOS melts at 54 C, with the longest relaxation time exhibiting a similar temperature dependence to that of the viscosity of bulk PS. However, the actual values of the gel relaxation time are more than 4 orders of magnitude larger than the relaxation time of bulk PS. This is attributed to the thermodynamic penalty of pulling PS end-blocks through the PEO/[EMI][TFSA] matrix. Ion gels with 20-50 wt % SOS do not melt and show two plateaus in the storage modulus over the temperature and frequency ranges measured. The one at higher frequencies is that of an entangled network of PEO strands with PS cross-links; the modulus displays a quadratic dependence on polymer weight fraction and agrees with the prediction of linear viscoelastic theory assuming half of the PEO chains are elastically effective. The frequency that separates the two plateaus, {omega}{sub c}, reflects the time scale of PS end-block pull-out. The other plateau at lower frequencies is that of a congested micelle solution with PS cores and PEO coronas, which has a power law dependence on domain spacing similar to diblock melts. The ionic conductivity of the ion gels is compared to PEO homopolymer solutions at similar polymer concentrations; the conductivity is reduced by a factor of 2.1 or less, decreases with increasing PS volume fraction, and follows predictions based on a simple obstruction model. Our collective results allow the formulation of basic design considerations for optimizing the mechanical properties, thermal stability, and ionic conductivity of these gels.

Zhang, Sipei; Lee, Keun Hyung; Sun, Jingru; Frisbie, C. Daniel; Lodge, Timothy P. (UMM)

2013-03-07T23:59:59.000Z

412

Ionic Liquids: Radiation Chemistry, Solvation Dynamics and Reactivity Patterns  

SciTech Connect (OSTI)

Ionic liquids (ILs) are a rapidly expanding family of condensed-phase media with important applications in energy production, nuclear fuel and waste processing, improving the efficiency and safety of industrial chemical processes, and pollution prevention. ILs generally have low volatilities and are combustion-resistant, highly conductive, recyclable and capable of dissolving a wide variety of materials. They are finding new uses in chemical synthesis, catalysis, separations chemistry, electrochemistry and other areas. Ionic liquids have dramatically different properties compared to conventional molecular solvents, and they provide a new and unusual environment to test our theoretical understanding of primary radiation chemistry, charge transfer and other reactions. We are interested in how IL properties influence physical and dynamical processes that determine the stability and lifetimes of reactive intermediates and thereby affect the courses of reactions and product distributions. We study these issues by characterization of primary radiolysis products and measurements of their yields and reactivity, quantification of electron solvation dynamics and scavenging of electrons in different states of solvation. From this knowledge we wish to learn how to predict radiolytic mechanisms and control them or mitigate their effects on the properties of materials used in nuclear fuel processing, for example, and to apply IL radiation chemistry to answer questions about general chemical reactivity in ionic liquids that will aid in the development of applications listed above. Very early in our radiolysis studies it became evident that the slow solvation dynamics of the excess electron in ILs (which vary over a wide viscosity range) increase the importance of pre-solvated electron reactivity and consequently alter product distributions and subsequent chemistry. This difference from conventional solvents has profound effects on predicting and controlling radiolytic yields, which need to be quantified for the successful use under radiolytic conditions. Electron solvation dynamics in ILs are measured directly when possible and estimated using proxies (e.g. coumarin-153 dynamic emission Stokes shifts or benzophenone anion solvation) in other cases. Electron reactivity is measured using ultrafast kinetics techniques for comparison with the solvation process.

Wishart, J.F.

2011-06-12T23:59:59.000Z

413

P:\\Room Numbering Standard\\MSU Room Number Standard 2012.doc 3/12/2012 Page 1 MSU Room Numbering Standard  

E-Print Network [OSTI]

and other spaces in university facilities. Numbering standards ensure continuity within the buildings is a customized standard that: · Accommodates a logical flow and pedestrian movement through buildings Numbering Standard. Minor renovations or additions to an existing building may continue to use existing room

Maxwell, Bruce D.

414

E-Print Network 3.0 - allergy counselling room Sample Search...  

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

be obtained from the Texas Tech Certification Officer (ED, Room 106). Graduate Counseling Certificates Mental... of Education Office of Graduate Studies and Research (ED, Room...

415

Cooling the Planet: Opportunities for Deployment of Superefficient Room Air Conditioners  

E-Print Network [OSTI]

chapter we discuss market, energy consumption and technologyeffective Room AC energy efficiency market transformation42 Chapter 3 Room AC Market and Energy Consumption

Shah, Nihar

2014-01-01T23:59:59.000Z

416

3 ThInK Space (301) iSci Faculty Work Room (306)  

E-Print Network [OSTI]

(B109-10) Silent Study Room (B115) McMaster Social Innovation Lab (B117/A) Group Study Rooms ­ Book

Haykin, Simon

417

E-Print Network 3.0 - audiometric test rooms Sample Search Results  

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

test rooms Search Powered by Explorit Topic List Advanced Search Sample search results for: audiometric test rooms Page: << < 1 2 3 4 5 > >> 1 PHYSICAL PLANT HEARING CONSERVATION...

418

Nuclear fusion reaction rates for strongly coupled ionic mixtures  

SciTech Connect (OSTI)

We analyze the effect of plasma screening on nuclear reaction rates in dense matter composed of atomic nuclei of one or two types. We perform semiclassical calculations of the Coulomb barrier penetrability taking into account a radial mean-field potential of plasma ions. The mean-field potential is extracted from the results of extensive Monte Carlo calculations of radial pair distribution functions of ions in binary ionic mixtures. We calculate the reaction rates in a wide range of plasma parameters and approximate these rates by an analytical expression that is expected to be applicable to multicomponent ion mixtures. Also, we analyze Gamow-peak energies of reacting ions in various nuclear burning regimes. For illustration, we study nuclear burning in {sup 12}C-{sup 16}O mixtures.

Chugunov, A. I.; DeWitt, H. E. [Ioffe Physical-Technical Institute, Politekhnicheskaya 26, RU-194021 St. Petersburg (Russian Federation); Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2009-07-15T23:59:59.000Z

419

Dielectric function of a collisional plasma for arbitrary ionic charge  

Science Journals Connector (OSTI)

A simple model for the dielectric function of a completely ionized plasma with an arbitrary ionic charge that is valid for long-wavelength high-frequency perturbations is derived using an approximate solution of a linearized Fokker-Planck kinetic equation for electrons with a Landau collision integral. The model accounts for both the electron-ion collisions and the collisions of the subthermal (cold) electrons with thermal ones. The relative contribution of the latter collisions to the dielectric function is treated phenomenologically, introducing some parameter ? that is chosen in such a way as to get a well-known expression for stationary electric conductivity in the low-frequency region and fulfill the requirement of a vanishing contribution of electron-electron collisions in the high-frequency region. This procedure ensures the applicability of our model in a wide range of plasma parameters as well as the frequency of the electromagnetic radiation. Unlike the interpolation formula proposed earlier by Brantov et al. [Brantov et al., JETP 106, 983 (2008)], our model fulfills the Kramers-Kronig relations and permits a generalization for the cases of degenerate and strongly coupled plasmas. With this in mind, a generalization of the well-known Lee-More model [Y. T. Lee and R. M. More, Phys. Fluids 27, 1273 (1984)] for stationary conductivity and its extension to dynamical conductivity [O. F. Kostenko and N. E. Andreev, GSI Annual Report No. GSI-2008-2, 2008 (unpublished), p. 44] is proposed for the case of plasmas with arbitrary ionic charge.

H. B. Nersisyan, M. E. Veysman, N. E. Andreev, and H. H. Matevosyan

2014-03-06T23:59:59.000Z

420

Calculation of multicomponent ionic diffusion from zero to high concentration: II. Inclusion of associated ion species  

SciTech Connect (OSTI)

This paper presents a theoretical model of multicomponent ionic diffusion which is valid to high concentration for systems which show ion association. The results of the authors' formulations are contrasted with those of more simplified models for systems containing Na{sub 2}SO{sub 4} and MgSO{sub 4}, as well as for multicomponent natural seawater. The differences between their model and simplified models are significant, especially at high concentration. Inconsistencies which may develop with the use of the simplified approaches are demonstrated. The authors' approach requires considerable data which are not available at temperatures other than 25{degree}C. Therefore, other approaches which are based only on data at infinite dilution are of great interest. They show here that, if chemical potential derivatives are included in the infinite dilution model of Nernst and Hartley which uses only infinite dilution mobilities, the model can be extended to slightly concentrated solutions. This extended Nernst-Hartley model gives good agreement with all of the existing experimental mutual diffusion coefficient data at concentrations below about 0.2 M in the six component system Na-K-Ca-Mg-Cl-SO{sub 4}-H{sub 2}O. This may be the most reliable way to extend infinite dilution data into more concentrated regions. In the systems they have studied, the inclusion of ion-association species for weakly interacting species does not appear to provide significant improvement over the generalized Nernst-Hartley model.

Felmy, A.R.; Weare, J.H. (Univ. of California, San Diego, La Jolla (USA))

1991-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Control of Computer Room Air Conditioning using IT Equipment Sensors  

E-Print Network [OSTI]

8 Figure 5 Server rack Inlet Air Temperature (8 Figure 6 Server-rack Leaving Air Temperature (Rack .

Bell, Geoffrey C.

2010-01-01T23:59:59.000Z

422

8E-17 fractional laser frequency instability with a long room-temperature cavity  

E-Print Network [OSTI]

We present a laser system based on a 48 cm long optical glass resonator. The large size requires a sophisticated thermal control and optimized mounting design. A self balancing mounting was essential to reliably reach sensitivities to acceleration of below $\\Delta \

Häfner, Sebastian; Grebing, Christian; Vogt, Stefan; Legero, Thomas; Merimaa, Mikko; Lisdat, Christian; Sterr, Uwe

2015-01-01T23:59:59.000Z

423

Fast 62–92 % yield preparation of amino acid dithiocarbamates in green solvent at room temperature  

Science Journals Connector (OSTI)

Dithiocarbamate and their derivatives are of importance in medicinal chemistry due to their biological activities, in agriculture as fungicides and in organic synthesis as versatile synthetic intermediates. Green

Najmedin Azizi; Mahboobe Marimi

2013-12-01T23:59:59.000Z

424

Measurement by Room Temperature Phosphorescence of Polynuclear Aromatic Containing Hydrocarbon Fuels that Permeate Glove Materials  

Science Journals Connector (OSTI)

......technique provided a simple, cost effective, and very sensitive means for measuring breakthrough times and permeation rates of the class of potentially carcinogenic PNA in liquid fuels derived from crude petroleum, oil shale, and coal....

R.B. Gammage; T. Vo-Dinh; D.A. White

1986-12-01T23:59:59.000Z

425

Atomic magnetic gradiometer for room temperature high sensitivity magnetic field detection  

DOE Patents [OSTI]

A laser-based atomic magnetometer (LBAM) apparatus measures magnetic fields, comprising: a plurality of polarization detector cells to detect magnetic fields; a laser source optically coupled to the polarization detector cells; and a signal detector that measures the laser source after being coupled to the polarization detector cells, which may be alkali cells. A single polarization cell may be used for nuclear magnetic resonance (NMR) by prepolarizing the nuclear spins of an analyte, encoding spectroscopic and/or spatial information, and detecting NMR signals from the analyte with a laser-based atomic magnetometer to form NMR spectra and/or magnetic resonance images (MRI). There is no need of a magnetic field or cryogenics in the detection step, as it is detected through the LBAM.

Xu,Shoujun (Berkeley, CA); Lowery, Thomas L. (Belmont, MA); Budker, Dmitry (El Cerrito, CA); Yashchuk, Valeriy V. (Richmond, CA); Wemmer, David E. (Berkeley, CA); Pines, Alexander (Berkeley, CA)

2009-08-11T23:59:59.000Z

426

Room temperature and cryogenic Yb:YAG thin disk laser : single crystal and ceramic.  

E-Print Network [OSTI]

??The focus of this dissertation is to design, optimize and build an efficient high power multi kilowatt thin-disk laser system. We improve the thin-disk beam… (more)

Vretenar, Natasa

2012-01-01T23:59:59.000Z

427

Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts  

E-Print Network [OSTI]

Efficiency and Renewable Energy, Building TechnologiesEfficiency and Renewable Energy, Building Technologies

Sidheswaran, Meera A.

2012-01-01T23:59:59.000Z

428

Electrospun Polyaniline Fibers as Highly Sensitive Room Temperature Chemiresistive Sensors for Ammonia and Nitrogen Dioxide Gases  

E-Print Network [OSTI]

Electrospun polyaniline (PAni) fibers doped with different levels of (+)-camphor-10-sulfonic acid (HCSA) are fabricated and evaluated as chemiresistive gas sensors. The experimental results, based on both sensitivity and ...

Zhang, Yuxi

429

Energy savings from extended air temperature setpoints and reductions in room air mixing  

E-Print Network [OSTI]

annual energy use intensity (EUI) changes caused by movingfixed at 21.5ºC. Similarly, the EUI changes from moving theso that the predicted annual EUI values include both effects

Hoyt, Tyler; Lee, Kwang Ho; Zhang, Hui; Arens, Edward; Webster, Tom

2005-01-01T23:59:59.000Z

430

Direct-gap optical gain of Ge on Si at room temperature  

E-Print Network [OSTI]

Lasers on Si are crucial components of monolithic electronic–photonic integration. Recently our theoretical analysis has shown that Ge, a pseudodirect bandgap material compatible with Si complementary metal oxide semiconductor ...

Liu, Jifeng

431

Part 1: Protein Dynamics Folded protein at physiologic or room temperature samples wide range of  

E-Print Network [OSTI]

protein molecule is likely to differ significantly from average structure - folded protein is an ensemble(unfolded state) 2 Aside 1: What disordered states are relevant to understand protein folding? compact denatured Protein Motions within Folded State Ensemble high energy costs of deformations of bond lengths, angles

Chan, Hue Sun

432

Microwave cavity-enhanced transduction for plug and play nanomechanics at room temperature  

E-Print Network [OSTI]

recent insights into energy storage and loss mechanisms in nanoelectromechanical systems (NEMS). Con applications [4, 5] in recent years is a direct conse- quence of their high resonance frequencies as well capacitance. We demonstrate that this modulation alters the response of a connected microwave cavity which can

Ludwig-Maximilians-Universität, München

433

Room-temperature quantum noise limited spectrometry and methods of the same  

DOE Patents [OSTI]

In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving a first light from a scene input, a second input aperture adapted for receiving a second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the detector, and the detector is a square-law detector capable of sensing the frequency difference between the first light and the second light. More systems and methods for detecting light are disclosed according to more embodiments.

Stevens, Charles G; Tringe, Joseph W

2014-12-02T23:59:59.000Z

434

Hydrogen adsorption on boron nitride nanotubes: A path to room-temperature hydrogen storage  

Science Journals Connector (OSTI)

The adsorption of molecular hydrogen on boron nitride nanotubes is studied with the use of the pseudopotential density functional method. The binding energy and distance of adsorbed hydrogen is particularly calculated. It is found that the binding energy of hydrogen on boron nitride nanotubes is increased by as much as 40% compared to that on carbon nanotubes, which is attributed to heteropolar bonding in boron nitride. The effect of substitutional doping and structural defects on hydrogen adsorption is also studied and we find a substantial enhancement of the binding energy from that on perfect boron nitride. The current study demonstrates a pathway to the finding of proper media that can hold hydrogen at ambient conditions through physisorption.

Seung-Hoon Jhi and Young-Kyun Kwon

2004-06-22T23:59:59.000Z

435

Quantitative room-temperature mineralization of airborne formaldehyde using manganese oxide catalysts  

E-Print Network [OSTI]

dish. A 47mm-diameter HVAC filter media specimen was mountedon a typical HVAC particle filter, removed formaldehyde withconditioning (HVAC) particle filter with a thin tackifier

Sidheswaran, Meera A.

2012-01-01T23:59:59.000Z

436

Room Temperature Ring-Opening Metathesis of Pyridines by a Transient TitC Linkage  

E-Print Network [OSTI]

), a reaction in which N-heterocycles present in petroleum or coal-based liquids are catalytically converted

Baik, Mu-Hyun

437

Ferromagnetism in Ti-Doped ZnO Nanoclusters above Room Temperature...  

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

Engelhard D Meyer AM Sharma Y Qiang Capabilities: Spectroscopy and Diffraction NMR and EPR Facility: Radiochemistry Annex Science Theme: Energy Materials & Processes Biosystem...

438

1250 IEEE SENSORS JOURNAL VOL. 6, NO. 5, OCTOBER 2006 Room-Temperature Hydrogen Sensitivity  

E-Print Network [OSTI]

is with the Institut fur Chemie, Humboldt-Universitt zu Berlin, 12489 Berlin, Germany (e-mail: Werner.Moritz@rz.hu-berlin.de; http://www. chemie.hu-berlin.de/wmoritz/index.html). J. Szeponik is with the BST Bio Sensor Technologie

Moritz, Werner

439

LATTICE STRAIN AND TEXTURE EVOLUTION DURING ROOM-TEMPERATURE DEFORMATION IN ZIRCALOY-2.  

E-Print Network [OSTI]

??Zircaloy-2 and its sister alloy, Zircaloy-4, have extensive applications in the nuclear industry as core components in heavy water reactors and fuel cladding in both… (more)

Xu, FENG

2008-01-01T23:59:59.000Z

440

Enhanced Room-Temperature Formability in High-Strength Aluminum Alloys through Pulse-Pressure Forming  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

Note: This page contains sample records for the topic "room temperature ionic" 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

COMPUTATIONAL MODELING OF CATHODIC LIMITATIONS ON LOCALIZED CORROSION OF WETTED SS 316L, AT ROOM TEMPERATURE  

SciTech Connect (OSTI)

The ability of a SS316L surface wetted with a thin electrolyte layer to serve as an effective cathode for an active localized corrosion site was studied computationally. The dependence of the total net cathodic current, I{sub net}, supplied at the repassivation potential E{sub rp} (of the anodic crevice) on relevant physical parameters including water layer thickness (WL), chloride concentration ([Cl{sup -}]) and length of cathode (Lc) were investigated using a three-level, full factorial design. The effects of kinetic parameters including the exchange current density (i{sub o,c}) and Tafel slope ({beta}{sub c}) of oxygen reduction, the anodic passive current density (i{sub p}) (on the cathodic surface), and E{sub rp} were studied as well using three-level full factorial designs of [Cl{sup -}] and Lc with a fixed WL of 25 {micro}m. The study found that all the three parameters WL, [Cl{sup -}] and Lc as well as the interactions of Lc x WL and Lc x [Cl{sup -}] had significant impact on I{sub net}. A five-factor regression equation was obtained which fits the computation results reasonably well, but demonstrated that interactions are more complicated than can be explained with a simple linear model. Significant effects on I{sub net} were found upon varying either i{sub o,c}, {beta}{sub c}, or E{sub rp}, whereas i{sub p} in the studied range was found to have little impact. It was observed that I{sub net} asymptotically approached maximum values (I{sub max}) when Lc increased to critical minimum values. I{sub max} can be used to determine the stability of coupled localized corrosion and the critical Lc provides important information for experimental design and corrosion protection.

F. Cui; F.J. Presuel-Moreno; R.G. Kelly

2005-10-13T23:59:59.000Z

442

Room-temperature quantum noise limited spectrometry and methods of the same  

DOE Patents [OSTI]

In one embodiment, a heterodyne detection system for detecting light includes a first input aperture adapted for receiving first light from a scene input, a second input aperture adapted for receiving second light from a local oscillator input, a broadband local oscillator adapted for providing the second light to the second input aperture, a dispersive element adapted for dispersing the first light and the second light, and a final condensing lens coupled to an infrared detector. The final condensing lens is adapted for concentrating incident light from a primary condensing lens onto the infrared detector, and the infrared detector is a square-law detector capable of sensing the frequency difference between the first light and the second light. More systems and methods for detecting light are described according to other embodiments.

Stevens, Charles G.; Tringe, Joseph W.; Cunningham, Christopher Thomas

2014-08-26T23:59:59.000Z

443

PNA-peptide Assembly in a 3D DNA Nanocage at Room Temperature  

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

Proteins and peptides fold into dynamic structures that access a broad functional landscape, however, designing artificial polypeptide systems is still a great challenge....

444

Pilot Study: Measurement of Room Illuminance to Assess Automatic Brightness  

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

Study: Measurement of Room Illuminance to Assess Automatic Brightness Study: Measurement of Room Illuminance to Assess Automatic Brightness Control in Televisions Title Pilot Study: Measurement of Room Illuminance to Assess Automatic Brightness Control in Televisions Publication Type Conference Proceedings Year of Publication 2012 Authors Greenblatt, Jeffery B., Mia Forbes Pirie, Louis-Benoit Desroches, Sally M. Donovan, Clancy Donnelly, Craig Billingsley, and Chris Calwell Pagination 13 Date Published August 12 Conference Location Berkeley Abstract Automatic brightness control (ABC) is an increasingly common feature found in newtelevisions (TVs) and computer monitors. ABC is intended to adjust TV screen brightness(luminance) according to the ambient light level (room illuminance). When implementedcorrectly, this can both reduce energy consumption and improve viewing quality. The currentENERGY STAR test procedure provides for a more favorable energy use rating for TVs withABC, by measuring power consumption at two light levels (0 and 300 lux) and reporting aweighted-average energy use. However, this and other studies suggest that these levels are notrepresentative of actual TV viewing conditions.As there were currently only limited data available concerning room illuminance, weundertook a small pilot study in 2011 to begin to answer two key questions: 1. To what extent doroom illuminance levels vary depending on the location of measurement (e.g., center of theroom, on the couch, or at the TV)? 2. What room illuminance conditions are prevalent whenpeople watch TV?We measured room illuminance in the homes of nine volunteers in California andColorado to begin addressing the above two questions. Although the study had the usualdrawbacks of a pilot (limited sample size, time duration, etc.), it has, nonetheless, yielded usefulresults. The study shows definitively that there is large variability between measurements madeat different locations in the room and, therefore, that location of room illuminance measurementsis critical. Moreover, the majority (over 75%) of TV viewing occurred at illuminance levels ofless than 50 lux (though measurements of up to several hundred lux were also recorded), a resultthat was consistent with subsequent larger-scale studies. This type of information can helpdetermine how ABC-enabled TVs should be tested to best represent actual viewing conditions.

445

Kinetic studies on chromium-catalyzed conversion of glucose into 5-hydroxymethylfurfural in alkylimidazolium chloride ionic liquid  

Science Journals Connector (OSTI)

Abstract 5-Hydroxymethylfurfural (HMF) is a promising green platform chemical derived from biomass. Kinetic studies were performed on chromium chloride-catalyzed conversion of glucose into HMF in alkylimidazolium chloride ionic liquids. The main by-products are disaccharides, fructose, glyceraldehyde, formic acid, and humins. The formation of HMF is strongly affected by reaction temperature and initial glucose concentration. The reaction is second order in glucose, with an activation energy of 134.9 kJ mol?1. The order in chromium is first, indicating that the rate-determining isomerization reaction is catalyzed by a mononuclear chromium species. The observed glucose conversion rate constant decreases as initial glucose concentration increases, suggesting that the catalytic activity of the chloride anion is significantly restrained by the hydrogen bonding with hydroxyl groups. A simplified kinetic model is developed to describe the behaviors of glucose conversion and HMF formation. This model is in good agreement with the experimental results.

Jian Zhang; Yan Cao; Huiquan Li; Xinbin Ma

2014-01-01T23:59:59.000Z

446

The dehydration of fructose to 5-hydroxymethylfurfural efficiently catalyzed by acidic ion-exchange resin in ionic liquid  

Science Journals Connector (OSTI)

The efficient dehydration of fructose to 5-hydroxymethylfurfural (HMF) was developed in ionic liquids (ILs) with acidic ion-exchange resins as catalyst. By screening different resins and \\{ILs\\} respectively, it was found that the structure of resins and \\{ILs\\} had a prominent effect on the dehydration of fructose. In 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), D001-cc resin showed a high activity. And then the effects of reaction temperatures, dosages of D001-cc, and different initial fructose loadings on the dehydration of fructose were studied in detail. The system of D001-cc resin and [Bmim]Cl exhibited a constant activity at 75 °C for 20 min and a 86.2% yield of HMF was obtained after seven recycles. At 75 °C for 20 min, a 93.0% yield of HMF from the dehydration of fructose was obtained.

Yuan Li; Hui Liu; Changhua Song; Xiaomin Gu; Huaming Li; Wenshuai Zhu; Sheng Yin; Changri Han

2013-01-01T23:59:59.000Z

447

Integrated intelligent systems in advanced reactor control rooms  

SciTech Connect (OSTI)

An intelligent, reactor control room, information system is designed to be an integral part of an advanced control room and will assist the reactor operator's decision making process by continuously monitoring the current plant state and providing recommended operator actions to improve that state. This intelligent system is an integral part of, as well as an extension to, the plant protection and control systems. This paper describes the interaction of several functional components (intelligent information data display, technical specifications monitoring, and dynamic procedures) of the overall system and the artificial intelligence laboratory environment assembled for testing the prototype. 10 refs., 5 figs.

Beckmeyer, R.R.

1989-01-01T23:59:59.000Z

448

The Temperature Changes During and After the Discharge of the Electric Organ in Electrophorus electricus  

Science Journals Connector (OSTI)

...equal to the warming of the external resistive load minus the heat of ionic mixing. Simultaneous measurements of the size of Q...perhaps involving a synthesis of ATP by reversal of the sodium pump. The temperature changes during and after the discharge of the...

1968-01-01T23:59:59.000Z

449

A Comparison of Electron-Transfer Dynamics in Ionic Liquids and Neutral  

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

Electron-Transfer Dynamics in Ionic Liquids and Neutral Electron-Transfer Dynamics in Ionic Liquids and Neutral Solvents Heather Y. Lee, Joseph B. Issa, Stephan S. Isied, Edward W. Castner, Jr., Yunfeng Pan, Charles L. Hussey, Kwang Soon Lee, and James F. Wishart J. Phys. Chem. C 116, 5197-5208 (2012). [Find paper at ACS Publications] or use ACS Articles on Request. Abstract: The effect of ionic liquids on photoinduced electron-transfer reactions in a donor-bridge-acceptor system is examined for two ionic liquid solvents, 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)amide and tributylmethylammonium bis(trifluoromethyl¬sulfonyl)¬amide. The results are compared with those for the same system in methanol and acetonitrile solution. Electron-transfer rates were measured using time-resolved fluorescence quenching for the donor-bridge-acceptor system comprising a

450

A Microfabricated Planar Electrospray Array Ionic Liquid Ion Source With Integrated Extractor  

E-Print Network [OSTI]

This paper reports the design, fabrication, and experimental characterization of a fully microfabricated planar array of externally fed electrospray emitters that produces heavy molecular ions from the ionic liquids ...

Gassend, Blaise

451

Ionic Liquids Used as Wear Reduction, Wins R&D 100 Award | Department...  

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

100 Award October 16, 2014 - 11:19am Addthis Partnered with Shell Global Solutions, the Oak Ridge National Laboratory (ORNL) has developed ionic liquids (salts in a liquid state...

452

Performance of ionic polymer-metal composite (IPMC) with different surface roughening methods  

Science Journals Connector (OSTI)

Based on permeation and double chemical reduction technology, this paper researches the manufacture of Pt-ionic polymer metal composites (IPMCs) and the effect of three types of surface roughening methods on the ...

Ning Jin; Bangfeng Wang; Kan Bian; Qi Chen…

2009-12-01T23:59:59.000Z

453

Theoretical Investigations on Nanoporpus Materials and Ionic Liquids for Energy Storage  

E-Print Network [OSTI]

by adsorption. In this regard carbon nanotube and Metal Organic Framework (MOFs) based materials are worth studying. Ionic liquids (IL) are potential electrolytes that can improve energy storage capacity and safety in Li ion batteries. Therefore it is important...

Mani Biswas, Mousumi

2012-02-14T23:59:59.000Z

454

Survey on ionic liquids effect based on metal anions over the thermal stability of heavy oil  

Science Journals Connector (OSTI)

A survey on the effect of ionic liquids (ILs) over the thermal stability of a heavy Mexican oil was performed. ILs used were based on [Cnim]+ and [Cnpyr]+ organic cations with FeCl 4 ...

J. A. Murillo-Hernández; S. López-Ramírez…

2009-01-01T23:59:59.000Z

455

Synthesis of three advanced biofuels from ionic liquid-pretreated switchgrass using engineered Escherichia coli  

Science Journals Connector (OSTI)

...existing internal combustion engines. Based in part on previous work (9), we constructed a...Microbial cellulose utilization: Fundamentals and biotechnology . Microbiol...precursors suitable for gasoline, diesel, and jet engines directly from ionic liquid-treated...

Gregory Bokinsky; Pamela P. Peralta-Yahya; Anthe George; Bradley M. Holmes; Eric J. Steen; Jeffrey Dietrich; Taek Soon Lee; Danielle Tullman-Ercek; Christopher A. Voigt; Blake A. Simmons; Jay D. Keasling

2011-01-01T23:59:59.000Z

456

Correlating Humidity-Dependent Ionically Conductive Surface Area with Transport Phenomena in Proton-Exchange Membranes  

SciTech Connect (OSTI)

The objective of this effort was to correlate the local surface ionic conductance of a Nafion? 212 proton-exchange membrane with its bulk and interfacial transport properties as a function of water content. Both macroscopic and microscopic proton conductivities were investigated at different relative humidity levels, using electrochemical impedance spectroscopy and current-sensing atomic force microscopy (CSAFM). We were able to identify small ion-conducting domains that grew with humidity at the surface of the membrane. Numerical analysis of the surface ionic conductance images recorded at various relative humidity levels helped determine the fractional area of ion-conducting active sites. A simple square-root relationship between the fractional conducting area and observed interfacial mass-transport resistance was established. Furthermore, the relationship between the bulk ionic conductivity and surface ionic conductance pattern of the Nafion? membrane was examined.

He, Qinggang; Kusoglu, Ahmet; Lucas, Ivan T.; Clark, Kyle; Weber, Adam Z.; Kostecki, Robert

2011-08-01T23:59:59.000Z

457

Concerted Interconversion between Ionic Lock Substates of the b2 Adrenergic Receptor Revealed by Microsecond  

E-Print Network [OSTI]

Concerted Interconversion between Ionic Lock Substates of the b2 Adrenergic Receptor Revealed substates (2,5). Recently solved crystallographic structures of b2-adren- ergic receptor (B2AR) have shown

458

Environmentally Benign Production of Ionic Liquids in CO2-Expanded Systems  

E-Print Network [OSTI]

The need to reduce air pollution in chemical manufacturing processes continues to drive the search for alternative solvents. Ionic Liquids (ILs) have emerged in recent years as a promising solution. In contrast to traditional ...

Nwosu, Sylvia Ogechi

2012-08-31T23:59:59.000Z

459

High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation  

Science Journals Connector (OSTI)

High-Performance Ionic Diode Membrane for Salinity Gradient Power Generation ... These processes can also capture energy from waste heat by generating artificial salinity gradients using synthetic solns., such as thermolytic salts. ... saline brines because of the higher power d. ...

Jun Gao; Wei Guo; Dan Feng; Huanting Wang; Dongyuan Zhao; Lei Jiang

2014-08-19T23:59:59.000Z

460

Metal Chlorides in Ionic Liquid Solvents Convert Sugars to 5-Hydroxymethylfurfural  

SciTech Connect (OSTI)

Sugars were converted to hydroxymethylfurfural (HMF) at high yield in ionic liquids without the addition of Bronsted acids. Very small amount of certain metal halides significantly reduced the fructose dehydration barrier in ionic liquids producing HMF at high yields. Most remarkably, glucose, a common sugar molecule, was selectively converted to HMF in good yield in ionic liquids containing a small amount of CrCl2. Thus CrCl2 is unique among metal chlorides tested for its effectiveness in both isomerizing glucose as well as dehydrating fructose. Only negligble amount of levulinic acid was formed in the reactions. The catalytic activity of metal chlorides for sugar conversion in ionic liquids is perhaps related to hydroxyl group of the sugar forming metal complexes with the unsaturated metal center.

Zhao, Haibo; Holladay, John E.; Brown, Heather M.; Zhang, Z. Conrad

2007-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

Etherification of 5-Hydroxymethylfurfural to a Biodiesel Component Over Ionic Liquid Modified Zeolites  

Science Journals Connector (OSTI)

In this work, ionic liquid (IL) modified H-Beta zeolites were prepared and the physicochemical properties of the catalysts were investigated. IL modified zeolites were applied in 5-hydroxymethylfurfural (HMF) eth...

Eero Salminen; Narendra Kumar; Pasi Virtanen; Mikko Tenho…

2013-06-01T23:59:59.000Z

462

Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO2 Capture  

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

Ionic Liquids: Breakthrough Absorption Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO 2 Capture Background Development of innovative environmental control technologies is key to maintaining coal as an affordable and environmentally sound energy source. Carbon dioxide (CO 2 ) emissions control technologies, specifically post-combustion CO 2 capture, for coal- fired power plants is a major focus area in addressing climate change concerns. Post-

463

Structure and phase transitions into ionic adsorption layers on liquid interfaces  

E-Print Network [OSTI]

The structure of ionic adsorption layers is studied via a proper thermodynamic treatment of the electrostatic and non-electrostatic interactions between the surfactant ions as well as of the effect of thermodynamic non-locality. The analysis is also applied to phase transitions into the ionic adsorption layer, which interfere further with the oscillatory-diffusive structure of the electric double layer and hydrodynamic stability of squeezing waves in thin liquid films.

R. Tsekov

2014-03-02T23:59:59.000Z

464

Elucidating graphene - Ionic Liquid interfacial region: a combined experimental and computational study  

SciTech Connect (OSTI)

The interfacial region between graphene and an imidazolium based ionic liquid is studied using spectroscopic analysis and computational modelling. This combined approach reveals that the molecular level structure of the interfacial region is significantly influenced by functional group defects on the graphene surface.The combined experimental and computational study reveals that the molecular structure at interfacial region between graphene and imidazolium based ionic liquid is defined by the hydroxyl functional groups on the graphene surface

Vijayakumar, M.; Schwenzer, Birgit; Shutthanandan, V.; Hu, Jian Z.; Liu, Jun; Aksay, Ilhan A.

2014-01-10T23:59:59.000Z

465

Efficient Conversion of Glucose into 5-Hydroxymethylfurfural by Chromium(III) Chloride in Inexpensive Ionic Liquid  

Science Journals Connector (OSTI)

Efficient Conversion of Glucose into 5-Hydroxymethylfurfural by Chromium(III) Chloride in Inexpensive Ionic Liquid ... An efficient process was developed for the conversion of glucose into 5-hydroxymethylfurfural (HMF) in the relatively low-toxicity and inexpensive catalytic system of chromium(III) chloride (CrCl3·6H2O) catalyst and tetraethylammonium chloride (TEAC) ionic liquid. ... Chemoselective Hydrogenation of Biomass-Derived 5-Hydroxymethylfurfural into the Liquid Biofuel 2,5-Dimethylfuran ...

Lei Hu; Yong Sun; Lu Lin

2011-12-20T23:59:59.000Z

466

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

467

Astronomy in room 309 with Professor David Cohen  

E-Print Network [OSTI]

Astronomy in room 309 with Professor David Cohen March 1, 2006 The Moon You can see the moon up these out on your computer, with your parents - Information and pictures about the moon and astronomy: http://www.calculatorcat.com/moon_phases/moon_phases.phtml http://antwrp.gsfc.nasa.gov/apod/astropix.html (Astronomy Picture of the Day ­ check out their "search

Cohen, David

468

Pressure Differential Analysis of a Laboratory Animal Room  

E-Print Network [OSTI]

differential can prevent air flow from a low pressure region to a high pressure region. We tested whether the differential pressure is reasonable to regulate the code between the indoors and outdoors, and among laboratory animal rooms, so as to provide a...

Jiang, X.; Liu, Z.; Yoshida, H.; Tang, B.

2006-01-01T23:59:59.000Z

469

Sustainable Ecotourism Development Room 222 Newins-Ziegler Hall  

E-Print Network [OSTI]

FOR 4664: Sustainable Ecotourism Development Fall, 2011 Room 222 Newins-Ziegler Hall Tuesday Period Objectives: Students will learn how the emerging concept of ecotourism and outdoor recreation fits, and environmental benefits associated with recreation and ecotourism. The course will take a practical approach

Watson, Craig A.

470

Model-Based Commissioning for Filters in Room Air Conditioners  

E-Print Network [OSTI]

This paper proposes a model that can estimate filter resistance. Two sorts of value are used as inputs to estimate filter resistance. One is the power consumed by the fan in the indoor unit and the other is the thermal performance. For the room air...

Wang, F.; Yoshida, H.; Kitagawa, H.; Matsumoto, K.; Goto, K.

2004-01-01T23:59:59.000Z

471

Room to Grow How California Agriculture Can Help Reduce  

E-Print Network [OSTI]

Room to Grow March 2010 How California Agriculture Can Help Reduce Greenhouse Gas Emissions #12 for helping to edit this report. Additional information was provided by Drs. James Fadel, William Horwath to Grow: How California Agriculture Can Help Reduce Greenhouse Gas Emissions Berkeley Law \\ UCLA Law #12

Kammen, Daniel M.

472

DOE Home Offices & Facilities About DOE Press Room q Highlights  

E-Print Network [OSTI]

SEARCH DOE Home Offices & Facilities About DOE Press Room q Highlights q Press Releases q DOE strategies and biotechnologies for cleaning up groundwater at DOE and at industry sites." The contamination've provided a comprehensive picture that has led to fundamental changes in how scientists evaluate

Lovley, Derek

473

DETERMINATION OF IN-SITU THERMAL PROPERTIES OF STRIPA GRANITE FROM TEMPERATURE MEASUREMENTS IN THE FULL-SCALE HEATER EXPERIMENTS: METHOD AND PRELIMINARY RESULTS  

E-Print Network [OSTI]

observed temperatures for the Lulea University pilot heaterPower room '--_I, I\\'~ \\,1 Lulea drift I I I I I I I I Ithe temperature data from the LUlea University pilot heater

Jeffry, J.A.

2010-01-01T23:59:59.000Z

474

Obtaining Mixed Ionic/Electronic Conductivity in Perovskite Oxides in a Reducing Environment: A Computational Prediction for Doped SrTiO3  

SciTech Connect (OSTI)

The electronic conductivity and thermodynamic stability of mixed p- and n-doped SrTiO3 perovskites have been investigated under anodic solid oxide fuel cell conditions using density functional theory (DFT). In particular, constrained ab initio thermodynamic calculations have been performed to evaluate the phase stability of various Ga- and La-doped SrTiO3 at synthesized and anodic SOFC conditions. The density of states (DOS) of these materials was analyzed to determine the number of charge carriers and the degree of electronic conductivity. We find that a mixed ionic/electronic conductor can be obtained when doping SrTiO3 perovskite oxide with both p-type and n-type dopants. Calculations show that 10% Ga- and 20% La-doped SrTiO3 exhibit mixed ionic/electronic conductivity at high temperature and low oxygen partial pressure whereas doping with higher concentrations of Ga, e.g., 20%, diminishes the electronic conductivity of the material. Furthermore, changing the n-dopant from La (A-site) to Nb (B-site) does not significantly affect the reducibility and number of charge carriers in p- and n-doped SrTiO3. However, a higher degree of oxygen vacancy clustering is observed for the La-doped material which reduces the oxygen ion diffusion rate and traps electrons. Nevertheless, our findings suggest that independent of doping site, mixed ionic/ electronic conductivity can be obtained in SrTiO3 perovskite oxides under reducing conditions and high temperatures when using a mixed p- and n-type doping strategy that uses a p-dopant concentration smaller than the n-dopant concentration.

Suthirakun, Suwit; Ammal, Salai Cheettu; Xiao, Guoliang; Chen, Fanglin; Huang, Kevin; zur Loye, Hans-Conrad; Heyden, Andreas

2012-11-30T23:59:59.000Z

475

TRENDS: TEMPERATURE  

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

Historical Isotopic Temperature Record from the Vostok Ice Core Historical Isotopic Temperature Record from the Vostok Ice Core Graphics Digital Data J.R. Petit, D. Raynaud, and C. Lorius Laboratoire de Glaciogie et Géophysique de l'Environnement, CNRS, Saint Martin d'Hères Cedex, France J. Jouzel and G. Delaygue Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS, L'Orme des Merisiers, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France N.I. Barkov Arctic and Antarctic Research Institute, Beringa Street 38, 199397 St. Petersburg, Russia V.M. Kotlyakov Institute of Geography, Staromonetny, per 29, Moscow 109017, Russia DOI: 10.3334/CDIAC/cli.006 Period of Record 420,000 years BP-present Methods Because isotopic fractions of the heavier oxygen-18 (18O) and deuterium (D) in snowfall are temperature-dependent and a strong spatial correlation

476

Epitaxial oxygen sponges as low temperature catalysts | ornl.gov  

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

Functional Materials for Energy Functional Materials for Energy Epitaxial oxygen sponges as low temperature catalysts September 10, 2013 Crystal structure of SrCoO2.5 superimposed on a scanning transmission electron microscopy image of an epitaxially stabilized oxygen sponge. Fast and reversible redox reactions at considerably reduced temperatures are achieved by epitaxial stabilization of multivalent transition metal oxides. This illustrates the unprecedented potential of complex oxides for oxide-ionics, where oxidation state changes are used for energy generation, storage and electrochemical sensing. Thermomechanical degradation reduces the overall performance and lifetime of many perovskite oxides undergoing reversible redox reactions, such as those found in solid oxide fuel cells, rechargeable batteries,

477

Water Recycling removal using temperature-sensitive hydronen  

SciTech Connect (OSTI)

The overall objective of this project was to study the proposed Water Recycling/Removal Using Temperature-Sensitive Hydrogels. The main element of this technology is the design of a suitable hydrogel that can perform needed water separation for pulp and paper industry. The specific topics studied are to answer following questions: (a) Can water be removed using hydrogel from large molecules such as lignin? (b) Can the rate of separation be made faster? (c) What are the molecular interactions with hydrogel surface? (d) Can a hydrogel be designed for a high ionic strength and high temperature? Summary of the specific results are given.

Rana B. Gupta

2002-10-30T23:59:59.000Z

478

Spherical Target Temperature by Extended CFAST Calculation  

SciTech Connect (OSTI)

The purpose of this calculation is to evaluate the temperature at the surface of a spherical target made of polyethylene during a room fire. The current calculation is separated into 2 steps: (1) CFAST code calculation--Calculate the air temperature; radiation flux to the target from the fire, surrounding air, and walls; convection flux; and target temperature. (2) Extended model calculation--Calculate the temperature of the target sphere taking into account the density, heat capacity, heat conductivity, and the spherical geometry of the target by solving the coupled finite difference equations. The second step calculation utilizes the air temperature and radiation flux determined by the CFAST code calculation in the first step.

Ma, C W

2009-05-05T23:59:59.000Z

479

Zeolite-promoted transformation of glucose into 5-hydroxymethylfurfural in ionic liquid  

Science Journals Connector (OSTI)

Abstract A variety of zeolite catalysts were investigated for the conversion of glucose into 5-hydroxymethylfurfural (HMF) in ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), and the results revealed that H?-zeolite with a unique BEA structure and a moderate Si/Al ratio of 25 possessed the highest catalytic activity, which resulted in 50.3% HMF yield with 80.6% glucose conversion at a reaction temperature of 150 °C for only 50 min. In the presence of H?-zeolite (Si/Al = 25) and [BMIM]Cl, the reaction kinetics for the conversion of glucose into HMF was studied and determined to be in accordance with a first-order reaction rate equation, and the activation energy and pre-exponential factor were 97.4 kJ mol?1 and 2.2 × 1010 min?1, respectively. Moreover, a plausible mechanism involving the isomerization of glucose into fructose followed by the dehydration of fructose into HMF was proposed on the basis of the synergistic catalytic effect between Lewis acid sites and Brønsted acid sites of H?-zeolite. H?-zeolite (Si/Al = 25) could be easily regenerated via a simple calcination, and a similar HMF yield with the first reaction run was observed in the seventh reaction run. More importantly, H?-zeolite (Si/Al = 25) and [BMIM]Cl were also confirmed to be an excellent combination for the conversion of other carbohydrates such as fructose, sucrose, maltose, cellobiose, starch and cellulose into HMF.

Lei Hu; Zhen Wu; Jiaxing Xu; Yong Sun; Lu Lin; Shijie Liu

2014-01-01T23:59:59.000Z

480

Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet)  

SciTech Connect (OSTI)

Field testing was performed in a retrofit unoccupied test house in Fresno, California. Three air-based heating, ventilation, and air conditioning (HVAC) distribution systems - a typical airflow ducted system to the bedrooms, a low airflow ducted system to the bedrooms, and a system with no ductwork to the bedrooms - were evaluated during heating, cooling, and midseason conditions. The relative ability of each of the three systems was assessed with respect to relevant Air Conditioning Contractors of America (ACCA) and ASHRAE standards for house temperature uniformity and stability, respectively. Computational fluid dynamics (CFD) modeling also was performed and refined based on comparison to field test results to determine the air flow rate into the bedrooms of over-door and bottom-of-door air transfer grilles.

Not Available

2014-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "room temperature ionic" 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

List of Room Air Conditioners Incentives | Open Energy Information  

Open Energy Info (EERE)

Conditioners Incentives Conditioners Incentives Jump to: navigation, search The following contains the list of 112 Room Air Conditioners Incentives. CSV (rows 1 - 112) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active AEP Ohio - Commercial New Construction Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Commercial Industrial Local Government Municipal Utility Nonprofit Schools State Government Central Air conditioners Chillers Comprehensive Measures/Whole Building Custom/Others pending approval Energy Mgmt. Systems/Building Controls Heat pumps Lighting Lighting Controls/Sensors Motor VFDs Motors Water Heaters Commercial Cooking Equipment Commercial Refrigeration Equipment Room Air Conditioners Yes Alexandria Light and Power - Residential Energy Efficiency Rebate Program (Minnesota) Utility Rebate Program Minnesota Residential Central Air conditioners

482

Press Room - Radio - U.S. Energy Information Administration (EIA)  

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

Press Room Press Room Glossary › FAQS › Overview Press Releases Testimony Presentations Radio Events Radio Spots Ready-to-broadcast news stories. Transcripts provided so radio spots can be re-recorded in whole or in part. Residential heating oil prices virtually unchanged mp3 Date: December 18, 2013 Description: The average retail price for home heating oil fell 4-tenths of a penny from a week ago to $3.95 per gallon. That's down 8-tenths of a penny from a year ago, based on the residential heating fuel survey by the U.S. Energy Information Administration. Heating oil prices in the New England region rose 3.92 per gallon, up 3-tenths of a cent from last week, and up 3 cents from a year ago. Contact/Author: Amerine Woodyard, 202-586-1256 Transcript: http://www.eia.gov/radio/transcript/heating_oil_prices_12182013.pdf

483

Press Room - U.S. Energy Information Administration (EIA)  

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

Press Room Press Room Glossary › FAQS › Overview Press Releases Testimony Presentations Radio Events Press Releases State Energy Profiles enhanced and renewables sections added December 19, 2013 Growing oil and natural gas production continues to reshape the U.S. energy economy December 16, 2013 MEDIA ADVISORY: EIA to Release Updated Energy Forecasts to 2040 December 4, 2013 EIA initiates new monthly Drilling Productivity Report October 22, 2013 More press releases... Congressional Testimony U.S. petroleum supply system pdf Subject: EIA, Petroleum Presented by: Adam Sieminski, Administrator Presented to: Committee on Energy and Natural Resources U.S. Senate Washington, DC-July 16, 2013 Renewable Fuel Standard (RFS) program pdf Subject: EIA, Renewable, Forecasts Presented by: Adam Sieminski, Administrator

484

Sorption of organic gases in a furnished room  

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

a furnished room a furnished room Title Sorption of organic gases in a furnished room Publication Type Journal Article LBNL Report Number LBNL-53943 Year of Publication 2004 Authors Singer, Brett C., Kenneth L. Revzan, Toshifumi Hotchi, Alfred T. Hodgson, and Nancy J. Brown Journal Atmospheric Environment Volume 38 Start Page Chapter Issue 16 Pagination 2483-2494 Abstract We present experimental data and semi-empirical models describing the sorption of organic gases in a simulated indoor residential environment. Two replicate experiments were conducted with 20 volatile organic compounds (VOCs) in a 50-m3 room finished with painted wallboard, carpet and cushion, draperies and furnishings. The VOCs span a wide volatility range and include ten Hazardous Air Pollutants. VOCs were introduced to the static chamber as a pulse and their gas-phase concentrations were measured during a net adsorption period and a subsequent net desorption period. Three sorption models were fit to the measured concentrations for each compound to determine the simplest formulation needed to adequately describe the observed behavior. Sorption parameter values were determined by fitting the models to adsorption period data then checked by comparing measured and predicted behavior during desorption. The adequacy of each model was evaluated using a goodness of fit parameter calculated for each period. Results indicate that sorption usually does not greatly affect indoor concentrations of methyl-tert-butyl ether, 2-butanone, isoprene and benzene. In contrast, sorption appears to be a relevant indoor process for many of the VOCs studied, including C8-C10 aromatic hydrocarbons (HC), terpenes, and pyridine. These compounds sorbed at rates close to typical residential air change rates and exhibited substantial sorptive partitioning at equilibrium. Polycyclic aromatic HCs, aromatic alcohols, ethenylpyridine and nicotine initially adsorbed to surfaces at rates of 1.5 to >6 h-1 and partitioned 95 to >99% in the sorbed phase at equilibrium

485

Prediction of Room Air Diffusion for Reduced Diffuser Flow Rates  

E-Print Network [OSTI]

modeling at the air supply device (ASHRAE Research Project RP -1009, ?Simplified Diffuser Boundary Conditions for Numerical Room Airflow Models, 2001) 2.2.4 Box model Nielsen (1989, 1992) proposed the box method with an imaginary box near.... Nielsen (1989, 13 1992). Results obtained from the box method are in good agreement with the measured data. Figure 5 Methods for momentum modeling in front of an air supply device (ASHRAE RP -1009, ?Simplified Diffuser Boundary Conditions...

Gangisetti, Kavita

2011-02-22T23:59:59.000Z

486

A comparison of nuclear reactor control room display panels  

E-Print Network [OSTI]

complex and time consuming task. It is expected that the control room of future commercial nuclear reactor power plants will change considerably as a result of these studies. Currently there are literally hundreds of displays and controls...: Dr. Rodger S. Koppa A study was conducted to investigate the use of computer generated displays to operate nuclear reactor power plants. The AGN-201 reactor at Texas A&M university was the reactor studied. After observing several licensed reactor...

Bowers, Frances Renae

2012-06-07T23:59:59.000Z

487

Ionic Liquids as Novel Lubricants and Additives for Diesel Engine Applications  

SciTech Connect (OSTI)

The lubricating properties of two ionic liquids with the same anion but different cations, one ammonium IL [C8H17]3NH.Tf2N and one imidazolium IL C10mim.Tf2N, were evaluated both in neat form and as oil additives. Experiments were conducted using a standardized reciprocating sliding test using a segment of a Cr-plated diesel engine piston ring against a grey cast iron flat specimen with simulated honing marks as on the engine cylinder liner. The selected ionic liquids were benchmarked against conventional hydrocarbon oils. Substantial friction and wear reductions, up to 55% and 34%, respectively, were achieved for the neat ionic liquids compared to a fully-formulated 15W40 engine oil. Adding 5 vol% ILs into mineral oil has demonstrated significant improvement in the lubricity. One blend even outperformed the 15W40 engine oil with 9% lower friction and 34% less wear. Lubrication regime modeling, worn surface morphology examination, and surface chemical analysis were conducted to help understand the lubricating mechanisms for ionic liquids. Results suggest great potential for using ionic liquids as base lubricants or lubricant additives for diesel engine applications.

Qu, Jun [ORNL; Blau, Peter Julian [ORNL; Dai, Sheng [ORNL; Luo, Huimin [ORNL; Meyer III, Harry M [ORNL

2009-01-01T23:59:59.000Z

488

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

We study the surface tension of ionic solutions at air/water and oil/water interfaces. By using field-theoretical methods and including a finite proximal surface-region with ionic-specific interactions. The free energy is expanded to first-order in a loop expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical predictions that reunite the Onsager-Samaras pioneering result (which does not agree with experimental data), with the ionic specificity of the Hofmeister series. We derive analytically the surface-tension dependence on the ionic strength, ionic size and ion-surface interaction, and show consequently that the Onsager-Samaras result is consistent with the one-loop correction beyond the mean-field result. Our theory fits well a wide range of salt concentrations for different monovalent ions using one fit parameter, and reproduces the reverse Hofmeister series for anions at the air/water and oil/water interfaces.

Markovich, Tomer; Podgornik, Rudolf

2014-01-01T23:59:59.000Z

489

Surface Tension of Electrolyte Interfaces: Ionic Specificity within a Field-Theory Approach  

E-Print Network [OSTI]

We study the surface tension of ionic solutions at air/water and oil/water interfaces. By using field-theoretical methods and including a finite proximal surface-region with ionic-specific interactions. The free energy is expanded to first-order in a loop expansion beyond the mean-field result. We calculate the excess surface tension and obtain analytical predictions that reunite the Onsager-Samaras pioneering result (which does not agree with experimental data), with the ionic specificity of the Hofmeister series. We derive analytically the surface-tension dependence on the ionic strength, ionic size and ion-surface interaction, and show consequently that the Onsager-Samaras result is consistent with the one-loop correction beyond the mean-field result. Our theory fits well a wide range of salt concentrations for different monovalent ions using one fit parameter per electrolyte, and reproduces the reverse Hofmeister series for anions at the air/water and oil/water interfaces.

Tomer Markovich; David Andelman; Rudolf Podgornik

2015-01-10T23:59:59.000Z

490

The waiting room: vector for health education? the general practitioner’s point of view  

Science Journals Connector (OSTI)

In the present study, we examined use of the GP’s waiting room as a vector for the dissemination of health information. Most waiting rooms have a number of posters on display. Posters are widely used for health p...

Maxine Gignon; Hadjila Idris; Cecile Manaouil; Oliver Ganry

2012-09-01T23:59:59.000Z

491

E-Print Network 3.0 - accelerator clean room Sample Search Results  

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

in clean room, assembly, and RF tests... cavities B in the clean room with the handling robot CRYOMODULES A - 0.07 Details of the cavity... in the cryomodule. However, because...

492

The Elephant in the Room: The Invisibility of Poverty in Research on Type 2 Diabetes  

E-Print Network [OSTI]

Zerubavel, E. 2006. The Elephant in the Room: Silence and2004. Don't Think of An Elephant: Know Your Values and Frameturn poverty into a proverbial “elephant in the room,” whose

Chaufan, Claudia MD, PhD; Weitz, PhD, Rose

2009-01-01T23:59:59.000Z

493

Beamline Temperatures  

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

Temperatures Temperatures Energy: 3.0000 GeV Current: 493.2242 mA Date: 11-Jan-2014 21:40:00 Beamline Temperatures Energy 3.0000 GeV Current 493.2 mA 11-Jan-2014 21:40:00 LN:MainTankLevel 124.4 in LN:MainTankPress 56.9 psi SPEAR-BL:B120HeFlow 15.4 l/min SPEAR-BL:B131HeFlow 22.2 l/min BL 4 BL02:LCW 0.0 ℃ BL02:M0_LCW 31.5 ℃ BL 4-1 BL04-1:BasePlate -14.0 ℃ BL04-1:Bottom1 46.0 ℃ BL04-1:Bottom2 47.0 ℃ BL04-1:Lower 32.0 ℃ BL04-1:Moly 46.0 ℃ BL04-1:ChinGuard1 31.0 ℃ BL04-1:ChinGuard2 31.0 ℃ BL04-1:FirstXtalA -167.0 ℃ BL04-1:FirstXtalB -172.0 ℃ BL04-1:Pad1 31.0 ℃ BL04-1:Pad2 31.0 ℃ BL04-1:SecondXtalA -177.0 ℃ BL04-1:SecondXtalB -175.0 ℃ BL 4-2 BL04-2:BasePlate -14.0 ℃ BL04-2:Bottom1 24.0 ℃ BL04-2:Bottom2 25.0 ℃

494

Finite-Temperature Hydrogen Adsorption/Desorption Thermodynamics Driven by Soft Vibration Modes  

SciTech Connect (OSTI)

It is widely accepted that room-temperature hydrogen storage on nanostructured or porous materials requires enhanced dihydrogen adsorption. In this work we reveal that room-temperature hydrogen storage is possible not only by the enhanced adsorption, but also by making use of the vibrational free energy from soft vibration modes. These modes exist for example in the case of metallo-porphyrin-incorporated graphenes (M-PIGs) with out-of-plane ( buckled ) metal centers. There, the in-plane potential surfaces are flat because of multiple-orbital-coupling between hydrogen molecules and the buckled-metal centers. This study investigates the finite-temperature adsorption/desorption thermodynamics of hydrogen molecules adsorbed on M-PIGs by employing first-principles total energy and vibrational spectrum calculations. Our results suggest that the current design strategy for room-temperature hydrogen storage materials should be modified by explicitly taking finite-temperature vibration thermodynamics into account.

Woo, Sung-Jae [KAIST, Daejeon, Republic of Korea; Lee, Eui-Sup [KAIST, Daejeon, Republic of Korea; Yoon, Mina [ORNL; Yong-Hyun, Kim [KAIST, Daejeon, Republic of Korea

2013-01-01T23:59:59.000Z

495

Building Automation and Controls Systems: Integrated Room Control for Personalized Comfort and Increased ROI  

E-Print Network [OSTI]

Smart Room Control ESL-IC-14-09-05 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 Agenda ? Room Control fundamentals and evolution ? Challenges ? The Smart Room Control... approach ? Benefits ? Market applications ? Typical Configurations ? Summary ESL-IC-14-09-05 Proceedings of the 14th International Conference for Enhanced Building Operations, Beijing, China, September 14-17, 2014 Room Control – System Fundamentals ? HVAC...

Gill, D.

2014-01-01T23:59:59.000Z

496

Microsoft Word - Poster Abstract_2010_GATech_Mixed Ionic-Electronic Conductors.docx  

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

Investigation of Oxygen Reduction Activity on Mixed Ionic-Electronic Conductors for Investigation of Oxygen Reduction Activity on Mixed Ionic-Electronic Conductors for SOFC Cathodes Matthew E. Lynch, Lei Yang, Meilin Liu Center for Innovative Fuel Cell and Battery Technologies School of Materials Science and Engineering Georgia Institute of Technology 771 Ferst Dr., Atlanta, GA 30332-0245 Telephone: 404-894-6114 Email: meilin.liu@mse.gatech.edu Porous cathodes are of primary importance to the electrochemical operation of a solid oxide fuel cell (SOFC). The compound La 1-x Sr x Co 1-y Fe y O 3-δ (LSCF) is a candidate material for the cathode, and shows good mixed ionic-electronic conductivity as well as good activity toward the oxygen reduction

497

Reclamation of niobium compounds from ionic liquid electrochemical polishing of superconducting radio frequency cavities  

SciTech Connect (OSTI)

Recent research has shown that choline chloride (vitamin B4)-based solutions can be used as a greener alternative to acid-based electrochemical polishing solutions. This study demonstrated a successful method for electrochemical deposition of niobium compounds onto the surface of copper substrates using a novel choline chloride-based ionic liquid. Niobium ions present in the ionic liquid solution were dissolved into the solution prior to deposition via electrochemical polishing of solid niobium. A black coating was clearly visible on the surface of the Cu following deposition. This coating was analyzed using scanning electron microscopy (SEM), electron dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), and X-ray fluorescence spectroscopy (XRF). This ionic liquid-based electrochemical deposition method effectively recycles previously dissolved niobium from electrochemical polishing of superconducting radio frequency (SRF) cavities.

Wixtrom, Alex I. [Christopher Newport University, Newport News, VA (United States); Buhler, Jessica E. [Christopher Newport University, Newport News, VA (United States); Reece, Charles E. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Abdel-Fattah, Tarek M. [Christopher Newport University, Newport News, VA (United States)

2013-06-01T23:59:59.000Z

498

Dark Rate of a Photomultiplier at Cryogenic Temperatures  

E-Print Network [OSTI]

When cooled below room temperature, the pulse response of a photomultiplier in the absence of light (dark rate) initially decreases, but then turns around near 250 K and continues to rise all the way down to 4 K. When the photomultiplier is cold, its dark response is burst-like. We have measured the characteristics of the dark response of a photomultiplier.

H. O. Meyer

2008-05-06T23:59:59.000Z

499

Design and Development of a High Temperature Radiatively Cooled  

E-Print Network [OSTI]

in emissivity between rough (EDM machined) and smooth (polished) surfaces. Indicates that we can apply (~2000K) , and number of cycles to failure (107 - 108) · Conventional fatigue machines typically operate at room temperature. There are commercially available fatigue machines that

McDonald, Kirk

500

Behaviour of {sup 222}Rn at cryogenic temperatures  

SciTech Connect (OSTI)

The behaviour of radon in a cryogenic environment is still not well known. Therefore, measured radon emanation rates at room temperature cannot be translated directly to cryogenic conditions. In this work we present a table-top experiment that provides a direct way of determining the behaviour of {sup 222}Rn in cryogenic argon and helium at liquid argon temperature. We observe an increased emanation rate of {sup 222}Rn atoms to liquid argon compared to the rate observed to helium at room temperature. We also find that {sup 222}Rn atoms stick to cold metal surfaces when emanated to helium at liquid argon temperature but partly distribute in the liquid when emanated to cryogenic argon. Concluding, we give possible interpretations of the observations.

Lindemann, Sebastian; Simgen, Hardy [Max-Planck-Institut fuer Kernphysik, Postfach 103980, D-69029 Heidelberg (Germany); Zuzel, Grzegorz [Jagellonian University, Institute of Physics, Reymonta 4, 30-059 Krakow (Poland)

2011-04-27T23:59:59.000Z