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Note: This page contains sample records for the topic "time-of-day single phase" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Data-driven hallucination of different times of day from a single outdoor photo  

E-Print Network [OSTI]

We introduce "time hallucination": synthesizing a plausible image at a different time of day from an input image. This challenging task often requires dramatically altering the color appearance of the picture. In this ...

Shih, YiChang

2

Factors Affecting HCCI Combustion Phasing for Fuels with Single...  

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

Affecting HCCI Combustion Phasing for Fuels with Single- and Dual-Stage Chemistry Factors Affecting HCCI Combustion Phasing for Fuels with Single- and Dual-Stage Chemistry 2004...

3

Analysis and design of some new single phase to three phase static converters  

E-Print Network [OSTI]

three phase ac motor. In Chapter III, four single phase to three phase converters for fixed frequency, fixed voltage operation is proposed. They are divided into two categories: (a) half-bridge converters and (b) full-bridge converters. Suitable...? Experimental results oi' the half-bridge single phase to three phase con- verter. . . . . . . . , . . . . . . . . 58 CHAPTER I INTRODUCTION Single phase to three phase converters are widely used where three phase ac motors need to be operated from a...

Rahman, Ashek

2012-06-07T23:59:59.000Z

4

An economical single to three phase converter for induction motors  

E-Print Network [OSTI]

There are several different types of single to three phase converters for induction motors available today. However, many of the presently available phase converters suffer from disadvantages such as high cost or low performance. An economical...

Di Zerega, Philp Van Uytandaele

2012-06-07T23:59:59.000Z

5

Gas-Phase Synthesis of Singly and Multiply Charged Polyoxovanadate...  

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

oxide clusters for subsequent investigations of structure and reactivity. Citation: Al Hasan NM, GE Johnson, and J Laskin.2013."Gas-Phase Synthesis of Singly and Multiply Charged...

6

PHASE I SINGLE CELL ELECTROLYZER TEST RESULTS  

SciTech Connect (OSTI)

This document reports the results of Phase I Single Cell testing of an SO{sub 2}-Depolarized Water Electrolyzer. Testing was performed primarily during the first quarter of FY 2008 at the Savannah River National Laboratory (SRNL) using an electrolyzer cell designed and built at SRNL. Other facility hardware were also designed and built at SRNL. This test further advances this technology for which work began at SRNL in 2005. This research is valuable in achieving the ultimate goal of an economical hydrogen production process based on the Hybrid Sulfur (HyS) Cycle. The focus of this work was to conduct single cell electrolyzer tests to further develop the technology of SO{sub 2}-depolarized electrolysis as part of the HyS Cycle. The HyS Cycle is a hybrid thermochemical cycle that may be used in conjunction with advanced nuclear reactors or centralized solar receivers to produce hydrogen by water-splitting. Like all other sulfur-based cycles, HyS utilizes the high temperature thermal decomposition of sulfuric acid to produce oxygen and regenerate sulfur dioxide. The unique aspect of HyS is the generation of hydrogen in a water electrolyzer that is operated under conditions where dissolved sulfur dioxide depolarizes the anodic reaction, resulting in substantial voltage reduction. Low cell voltage is essential for both thermodynamic efficiency and hydrogen cost. Sulfur dioxide is oxidized at the anode, producing sulfuric acid that is sent to the high temperature acid decomposition portion of the cycle. The electrolyzer cell uses the membrane electrode assembly (MEA) concept. The anode and cathode are formed by spraying platinum containing catalyst on both sides of a Proton Exchange Membrane (PEM). In most testing the material of the PEM was NafionR. The electrolyzer cell active area can be as large as 54.8 cm{sup 2}. Feed to the anode of the electrolyzer is a sulfuric acid solution containing sulfur dioxide. The partial pressure of sulfur dioxide could be varied in the range of 1 to 6 atm (15 to 90 psia). Temperatures could be controlled in the range from ambient to 80 C. Hydrogen generated at the cathode of the cell was collected for the purpose of flow measurement and composition analysis. The test facility proved to be easy to operate, versatile, and reliable.

Steimke, J; Timothy Steeper, T

2008-08-05T23:59:59.000Z

7

Solution Techniques for Single-Phase Subchannel Equations  

E-Print Network [OSTI]

A steady-state, single phase subchannel solver was created for the purpose of integration into a multi-physics nuclear fuel performance code. Since applications of such a code include full nuclear reactor core flow simulation, a thorough...

Hansel, Joshua Edmund

2013-04-11T23:59:59.000Z

8

Observing a Quantum Phase Transition by Measuring a Single Spin  

E-Print Network [OSTI]

We show that the ground-state quantum correlations of an Ising model can be detected by monitoring the time evolution of a single spin alone, and that the critical point of a quantum phase transition is detected through a maximum of a suitably defined observable. A proposed implementation with trapped ions realizes an experimental probe of quantum phase transitions which is based on quantum correlations and scalable for large system sizes.

Manuel Gessner; Michael Ramm; Hartmut Haeffner; Andreas Buchleitner; Heinz-Peter Breuer

2014-03-17T23:59:59.000Z

9

Nanophotonic quantum phase switch with a single atom  

E-Print Network [OSTI]

In analogy to transistors in classical electronic circuits, a quantum optical switch is an important element of quantum circuits and quantum networks. Operated at the fundamental limit where a single quantum of light or matter controls another field or material system, it may enable fascinating applications such as long-distance quantum communication, distributed quantum information processing and metrology, and the exploration of novel quantum states of matter. Here, by strongly coupling a photon to a single atom trapped in the near field of a nanoscale photonic crystal cavity, we realize a system where a single atom switches the phase of a photon, and a single photon modifies the atom's phase. We experimentally demonstrate an atom-induced optical phase shift that is nonlinear at the two-photon level, a photon number router that separates individual photons and photon pairs into different output modes, and a single-photon switch where a single "gate" photon controls the propagation of a subsequent probe fiel...

Tiecke, T G; de Leon, N P; Liu, L R; Vuleti?, V; Lukin, M D

2014-01-01T23:59:59.000Z

10

INTERGRANULAR CORROSION OF SINGLE PHASE ALUMINIUM AS A PITTING PHENOMENON  

E-Print Network [OSTI]

INTERGRANULAR CORROSION OF SINGLE PHASE ALUMINIUM AS A PITTING PHENOMENON M. METZGER Department of pitting corrosion in sulfuric acid containing sodium chloride were described. Intergranular fissuring in producing this type of attack. The intergranular corrosion phenomena which are exhibited by high purity

Paris-Sud XI, Université de

11

Investigation of single-substance horizontal two-phase flow  

SciTech Connect (OSTI)

Despite the abundance of work in the field of two-phase flow, it seems as though a consensus has not been reached on some of the fundamental points. Although exceptions exist, adequate physical interpretation of the flow seems to be hindered either by complexity of analysis or, in the opposite extreme, the trend toward limited-range analysis and correlations. The dissertation presents the derivation of basic conservation equations for the phases. The combined equations are used to examine the phenomenon of slip and its practical limitations, the Fanno line for single-substance flow and the effect of slip on choking. Equations for critical mass flux in the presence of slip are derived. The Mach, Reynolds and Froude numbers based on conditions at flashing are introduced as the characteristic parameters, and the importance of compressibility in single-substance two-phase flow is discussed. Experimental measurements of pressure change and void fraction for flow in the highly compressible range (.5 < Ma < 1) are presented. The working fluid is Refrigerant R-114, at room temperature, in a test section of diameter 5 cm and length 8 m. The effect of the Froude and Mach numbers is examined. The experimental facility is operated intermittently with running times of approximately two minutes and is instrumented for rapid measurements using a computer data acquisition and control system. A description of the facility and procedure is provided.

Dickinson, D.A.; Maeder, P.F.

1984-03-01T23:59:59.000Z

12

Single phase four pole/six pole motor  

DOE Patents [OSTI]

A single phase alternating current electric motor is provided with a main stator winding having two coil groups each including the series connection of three coils. These coil groups can be connected in series for six pole operation and in parallel for four pole operation. The coils are approximately equally spaced around the periphery of the machine but are not of equal numbers of turns. The two coil groups are identically wound and spaced 180 mechanical degrees apart. One coil of each group has more turns and a greater span than the other two coils. 10 figs.

Kirschbaum, H.S.

1984-10-09T23:59:59.000Z

13

Single phase two pole/six pole motor  

DOE Patents [OSTI]

A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that their magnetomotive forces are additive, two pole motor operation results. When the polarity of one of the groups is then reversed, six pole motor operation results. An auxiliary stator winding which is similar to the main stator winding is displaced from the main stator winding by 90 electrical degrees on a two pole basis. 12 figs.

Kirschbaum, H.S.

1984-09-25T23:59:59.000Z

14

Single phase two pole/six pole motor  

DOE Patents [OSTI]

A single phase alternating current two pole/six pole motor is provided with a main stator winding having six coils disposed unequally around the periphery of the machine. These coils are divided into two groups. When these groups are connected such that their magnetomotive forces are additive, two pole motor operation results. When the polarity of one of the groups is then reversed, six pole motor operation results. An auxiliary stator winding which is similar to the main stator winding is displaced from the main stator winding by 90 electrical degrees on a two pole basis.

Kirschbaum, Herbert S. (Asheville, NC)

1984-01-01T23:59:59.000Z

15

Dynamic behavior of a single-phase self-excited induction generator using a three-phase machine feeding single-phase dynamic load  

Science Journals Connector (OSTI)

This paper is motivated to analyze the transient behavior of a single-phase self-excited induction generator (SEIG) using a three-phase machine due to switching of single-phase dynamic load like induction motors. The generator consists of a three-phase star connected induction machine excited with three-capacitors and a single-phase induction motor (IM) load. The developed dynamic models of the SEIG and the motor are based on stationary reference frame d–q axes theory incorporating the effect of cross-saturation in the magnetic circuit of the machine and the equations of excitation capacitors are described by three-phase abc model. The system suffers from heavy transients during switching of induction motor and becomes unstable. These problems may be due to resonance caused by series capacitors and the inductive motor load. The use of damping resistors across one series capacitor is proposed to damp out the starting transients for the stable operation. The motor can be started up successfully using the damping resistor. The variation of the damping resistance with the increase in load on the motor after successful starting to maintain constant terminal voltage has been presented. The eigenvalue technique is also employed to examine the transient conditions in the studied SEIG-IM system. The simulated and experimental results are presented for both the unsuccessful and successful starting of the motor. These results are in close agreement with each other, which show the effectiveness of the approach.

S.N. Mahato; S.P. Singh; M.P. Sharma

2013-01-01T23:59:59.000Z

16

Instability of single-phase natural circulation under multiple loops  

SciTech Connect (OSTI)

Natural circulation loop passively conveys heat from heat sources to heat sinks without mechanical pump. Various plants have natural circulation systems, e.g., solar heaters, Light Water Reactor (LWR) and Liquid Metal Fast Breeder Reactor (LMFBR). The core of LMFBR is cooled by forced convection of single-phase liquid sodium in normal operation. After the accident, the decay heat of the core is designed to be cooled by the natural circulation of the liquid sodium. The natural circulation cooling is very important from a viewpoint of passive safety concept. Here, the natural circulation in single loop system had been studied by many researchers. In a multiple loop system, the instability of natural circulation was more complicated because of the interaction between the loops. In this study, the effects of the multiple loop on the natural circulation instability were investigated numerically. The multiple loops system with one heating tube and two cooling tubes were evaluated. The one-dimensional energy and momentum equations were solved using Finite Difference Method. The flow regimes of the instability were evaluated with varying the heat flux. In multiple loop system, the observed flow was classified into five regimes including chaotic regime. The flow regimes were qualitatively explained by the stability of the attractor in the phase space.

Satoh, A.; Okamoto, K.; Madarame, H. [Univ. of Tokyo, Tokai, Ibaraki (Japan). Nuclear Engineering Research Lab.

1996-08-01T23:59:59.000Z

17

Six pole/eight pole single-phase motor  

DOE Patents [OSTI]

A single phase alternating current electric motor is provided with a main stator winding having two coil groups which are connected to form eight poles for eight-pole operation and to form six poles for six-pole operation. Each group contains four series connected coil elements with each element spanning approximately one-seventh of the periphery of the machine. The coil groups are spaced 180 mechanical degrees apart such that each end coil of one group overlaps one of the end coils of the other group. An auxiliary stator winding having two coil groups with the same relative angular displacement as the main stator winding coil groups is included. 10 figs.

Kirschbaum, H.S.

1984-07-31T23:59:59.000Z

18

Robust Single-Qubit Process Calibration via Robust Phase Estimation  

E-Print Network [OSTI]

An important step in building a quantum computer is calibrating experimentally implemented quantum gates to produce operations that are close to ideal unitaries. The calibration step involves estimating the error in gates and then using controls to correct the implementation. Quantum process tomography is a standard technique for estimating these errors, but is both time consuming, (when one only wants to learn a few key parameters), and requires resources, like perfect state preparation and measurement, that might not be available. With the goal of efficiently estimating specific errors using minimal resources, we develop a parameter estimation technique, which can gauge two key parameters (amplitude and off-resonance errors) in a single-qubit gate with provable robustness and efficiency. In particular, our estimates achieve the optimal efficiency, Heisenberg scaling. Our main theorem making this possible is a robust version of the phase estimation procedure of Higgins et al. [B. L. Higgins, New J. Phys. 11, 073023 (2009)].

Shelby Kimmel; Guang Hao Low; Theodore J. Yoder

2015-02-09T23:59:59.000Z

19

Single particle detection: Phase control in submicron Hall sensors  

SciTech Connect (OSTI)

We present a phase-sensitive ac-dc Hall magnetometry method which allows a clear and reliable separation of real and parasitic magnetic signals of a very small magnitude. High-sensitivity semiconductor-based Hall crosses are generally accepted as a preferential solution for non-invasive detection of superparamagnetic nanobeads used in molecular biology, nanomedicine, and nanochemistry. However, detection of such small beads is often hindered by inductive pick-up and other spurious signals. The present work demonstrates an unambiguous experimental route for detection of small magnetic moments and provides a simple theoretical background for it. The reliability of the method has been tested for a variety of InSb Hall sensors in the range 600 nm-5 {mu}m. Complete characterization of empty devices, involving Hall coefficients and noise measurements, has been performed and detection of a single FePt bead with diameter of 140 nm and magnetic moment of {mu}{approx_equal}10{sup 8} {mu}{sub B} has been achieved with a 600 nm-wide sensor.

Di Michele, Lorenzo; Shelly, Connor; Gallop, John; Kazakova, Olga [National Physical Laboratory, Teddington TW11 0LW (United Kingdom)

2010-11-15T23:59:59.000Z

20

Fault Current Contribution from Single-Phase PV Inverters  

SciTech Connect (OSTI)

A significant increase in photovoltaic (PV) system installations is expected to come on line in the near future and as the penetration level of PV increases, the effect of PV may no longer be considered minimal. One of the most important attributions of additional PV is what effect this may have on protection systems. Protection engineers design protection systems to safely eliminate faults from the electric power system. One of the new technologies recently introduced into the electric power system are distributed energy resources (DER). Currently, inverter-based DER contributes very little to the power balance on all but a few utility distribution systems. As DER become prevalent in the distribution system, equipment rating capability and coordination of protection systems merit a closer investigation. A collaborative research effort between the National Renewable Energy Laboratory (NREL) and Southern California Edison (SCE) involved laboratory short-circuit testing single-phase (240 VAC) residential type (between 1.5 and 7kW) inverters. This paper will reveal test results obtained from these short-circuit tests.

Keller, J.; Kroposki, B.; Bravo, R.; Robles, S.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Compact, Light-Weight, Single-Phase, Liquid-Cooled Cold Plate  

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

Future 4 RelevanceObjectives * Overall Objective - Develop and demonstrate inverter plastic heat exchanger based on forced convective single-phase jets in conjunction with...

22

Developement of a digitally controlled low power single phase inverter for grid connected solar panel.  

E-Print Network [OSTI]

?? The work consists in developing a power conversion unit for solar panel connected to the grid. This unit will be a single phase inverter… (more)

Marguet, Raphael

2010-01-01T23:59:59.000Z

23

Robust iterative learning control of single-phase grid-connected inverter  

Science Journals Connector (OSTI)

For the single phase inductance-capacitance-inductance (LCL) grid-connected inverter in micro-grid, a kind of robust iterative learning controller...

Zhong-Qiang Wu; Chun-Hua Xu; Yang Yang

2014-08-01T23:59:59.000Z

24

A single-phase grid-connected PV system with active power filter  

Science Journals Connector (OSTI)

In this paper a single-phase active power filter based in a two stages grid-connected photovoltaic system is presented. The proposed system can not only inject PV power into utility but can act always as an active power filter to compensate the load ... Keywords: THD, grid-connected PV systems, power factor and active power filter, single-phase systems

Kleber C. A. De Souza; Denizar C. Martins

2008-07-01T23:59:59.000Z

25

A Five-Level Three-Phase Hybrid Cascade Multilevel Inverter Using a Single DC Source  

E-Print Network [OSTI]

A Five-Level Three-Phase Hybrid Cascade Multilevel Inverter Using a Single DC Source for a PM to construct a 3-phase 5-level cascade multilevel inverter to be used as a drive for a PM traction motor. The 5-level inverter consists of a standard 3-leg inverter (one leg for each phase) and an H-bridge in series

Tolbert, Leon M.

26

Experimental Study on Heat Transfer of Single-Phase Flow and Boiling Two-Phase Flow in Vertical Narrow Annuli  

SciTech Connect (OSTI)

Water single-phase and nucleate boiling heat transfer were experimentally investigated in vertical annuli with narrow gaps. The experimental data about water single-phase flow and boiling two-phase flow heat transfer in narrow annular channel were accumulated by two test sections with the narrow gaps of 1.0 mm and 1.5 mm. Empirical correlations to predict the heat transfer of the single-phase flow and boiling two-phase flow in the narrow annular channel were obtained, which were arranged in the forms of the Dittus-Boelter for heat transfer coefficients in a single-phase flow and the Jens-Lottes formula for a boiling two-phase flow in normal tubes, respectively. The mechanism of the difference between the normal channel and narrow annular channel were also explored. From experimental results, it was found that the turbulent heat transfer coefficients in narrow gaps are nearly the same to the normal channel in the experimental range, and the transition Reynolds number from a laminar flow to a turbulent flow in narrow annuli was much lower than that in normal channel, whereas the boiling heat transfer in narrow annular gap was greatly enhanced compared with the normal channel. (authors)

Suizheng Qiu; Guanghui Su; Dounan Jia [Xi'an Jiaotong University, No.28, Xianning West Road, Xi'an, Shaanxi, 710049 (China); Minoru Takahashi [Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152 (Japan)

2002-07-01T23:59:59.000Z

27

Microphysical Properties of Single and Mixed-Phase Arctic Clouds...  

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

droplets in liquid-only and mid-phase clouds, a lack of temperature dependence in the ice fraction for temperatures above 240 K, seasonal trends in the optical depth with the...

28

A single-phase photovoltaic inverter topology with a series-connected power buffer  

E-Print Network [OSTI]

Module integrated converters (MICs) have been under rapid development for single-phase grid-tied photovoltaic applications. The capacitive energy storage implementation for the double-line-frequency power variation represents ...

Pierquet, Brandon J.

29

Precise detection and elimination of grid injected DC from single phase inverters  

Science Journals Connector (OSTI)

Single-phase voltage source inverters are used for connecting small scale renewable energy sources to low voltage distribution networks. They operate to supply the network with sinusoidal current. If output tr...

Ashraf Ahmed; Ran Li

2012-08-01T23:59:59.000Z

30

Light-Weight, Single-Phase, Liquid-Cooled Cold Plate (Presentation)  

SciTech Connect (OSTI)

This presentation, 'Light-Weight, Low-Cost, Single-Phase Liquid-Cooled Cold Plate,' directly addresses program goals of increased power density, specific power, and lower cost of power electronics components through improved thermal management.

Narumanchi, S.

2013-07-01T23:59:59.000Z

31

Modeling and Simulation of an Electric Scooter Driven by a Single-Phase Induction Motor  

E-Print Network [OSTI]

Abstract:- An electric vehicle driven by DC motors has been widely used for several applications. In this paper, replacement of the DC motor by a single-phase induction motor on the electric vehicle is proposed. Low cost and less maintenance make the single-phase induction motor more impressive although a complicated inverter onboard the vehicle is required. This paper investigates this possibility through a whole system of electric vehicle movement simulation. The whole system simulation consists of three main parts: 1) power supply interface 2) motor performance calculation and 3) vehicle movement simulation. The electric scooter of 0.26 kW rating was employed for test. As a result, a single-phase induction motor showed ability to drive an electric scooter carrying with 80-kg load at almost constant speed of 20 kph.

C. Sukcharoen; T. Kulworawanichapong

32

Experimental Study of Single-Phase and Two-Phase Water-in-Crude-Oil Dispersed Flow Wax Deposition in a Mini Pilot-Scale Flow Loop  

Science Journals Connector (OSTI)

Experimental Study of Single-Phase and Two-Phase Water-in-Crude-Oil Dispersed Flow Wax Deposition in a Mini Pilot-Scale Flow Loop ... The axial length was discretized into 174 grid points (173 discretized sections). ...

Ekarit Panacharoensawad; Cem Sarica

2013-08-09T23:59:59.000Z

33

Film boiling on spheres in single- and two-phase flows.  

SciTech Connect (OSTI)

Film boiling on spheres in single- and two-phase flows was studied experimentally and theoretically with an emphasis on establishing the film boiling heat transfer closure law, which is useful in the analysis of nuclear reactor core melt accidents. Systematic experimentation of film boiling on spheres in single-phase water flows was carried out to investigate the effects of liquid subcooling (from 0 to 40 C), liquid velocity (from 0 to 2 m/s), sphere superheat (from 200 to 900 C), sphere diameter (from 6 to 19 mm), and sphere material (stainless steel and brass) on film boiling heat transfer. Based on the experimental data a general film boiling heat transfer correlation is developed. Utilizing a two-phase laminar boundary-layer model for the unseparated front film region and a turbulent eddy model for the separated rear region, a theoretical model was developed to predict the film boiling heat transfer in all single-phase regimes. The film boiling from a sphere in two-phase flows was investigated both in upward two-phase flows (with void fraction from 0.2 to 0.65, water velocity from 0.6 to 3.2 m/s, and steam velocity from 3.0 to 9.0 m/s) and in downward two-phase flows (with void fraction from 0.7 to 0.95, water velocity from 1.9 to 6.5 m/s, and steam velocity from 1.1 to 9.0 m/s). The saturated single-phase heat transfer correlation was found to be applicable to the two-phase film boiling data by making use of the actual water velocity (water phase velocity), and an adjustment factor of (1 - {alpha}){sup 1/4} (with a being the void fraction) for downward flow case only. Slight adjustments of the Reynolds number exponents in the correlation provided an even better interpretation of the two-phase data. Preliminary experiments were also conducted to address the influences of multi-sphere structure on the film boiling heat transfer in single- and two-phase flows.

Liu, C.; Theofanous, T. G.

2000-08-29T23:59:59.000Z

34

Elastic properties and pressure-induced phase transitions of single-walled carbon nanotubes  

E-Print Network [OSTI]

Elastic properties and pressure-induced phase transitions of single-walled carbon nanotubes S-walled carbon nanotubes under hydrostatic pressure by first-princi- ples calculations. The circular tubes of carbon nanotubes has been studied with a variety of experimental techniques. Most of these studies seemed

Nabben, Reinhard

35

SINGLE-PHASE LIQUID HEAT TRANSFER IN PLAIN AND ENHANCED MICROCHANNELS Mark E. Steinke  

E-Print Network [OSTI]

SINGLE-PHASE LIQUID HEAT TRANSFER IN PLAIN AND ENHANCED MICROCHANNELS Mark E. Steinke Systems upon the understanding of the fundamental heat transfer processes that occur in these systems. There have been great advancements in our understanding of the heat transfer and fluid flow mechanisms

Kandlikar, Satish

36

Low-Cost Single-Phase Powered Induction Machine Drive for Residential Applications  

E-Print Network [OSTI]

, and lifetime. Keywords-induction motor; harmonic elimination; power factor correction; efficiency; low cost of the motors are less than 1 hp in size, and account for approximately 10% of the electricity consumed by the electric motor population [1]. These fractional horsepower motors are primarily single- phase induction

Chapman, Patrick

37

Comparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters  

E-Print Network [OSTI]

, telecommunication systems and medical equipment to overcome disruptions in utility power such as outage, voltage sag are extremely sensitive to cost. On-line systems are preferred where a highly reliable un- interruptible powerComparative Study of Power Factor Correction Converters For Single Phase Half-Bridge Inverters Gui

Tolbert, Leon M.

38

Initial phase zone for phase locking to the resonance, using “main condition” of phase stability in DC-biased single-sided multipactor  

SciTech Connect (OSTI)

In the present work, the concept of accurate phase stability is employed to study a DC-biased single-sided multipactor. A “main condition” of phase stability was introduced in our previous studies of two-sided multipactors [M. Mostajeran, J. Instrum. 8, P04024 (2013); M. Mostajeran and M. Lamehi Rachti, Nucl. Instrum. Methods Phys. Res. A 615, 1–5 (2010)]. Using the same condition and assuming zero initial velocity for the secondary electrons, a regime of multipactors outside the resonance zones is found. The theoretical results are then verified by numerical simulation.

Mostajeran, M., E-mail: mostajeran@yazd.ac.ir [Faculty of Physics, Yazd University, P.O. Box 89195-741, Yazd (Iran, Islamic Republic of)

2014-05-15T23:59:59.000Z

39

Single-reactor process for producing liquid-phase organic compounds from biomass  

DOE Patents [OSTI]

Disclosed is a method for preparing liquid fuel and chemical intermediates from biomass-derived oxygenated hydrocarbons. The method includes the steps of reacting in a single reactor an aqueous solution of a biomass-derived, water-soluble oxygenated hydrocarbon reactant, in the presence of a catalyst comprising a metal selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, Mo, Tc, Ru, Rh, Pd, Ag, W, Re, Os, Ir, Pt, and Au, at a temperature, and a pressure, and for a time sufficient to yield a self-separating, three-phase product stream comprising a vapor phase, an organic phase containing linear and/or cyclic mono-oxygenated hydrocarbons, and an aqueous phase.

Dumesic, James A. (Verona, WI); Simonetti, Dante A. (Middleton, WI); Kunkes, Edward L. (Madison, WI)

2011-12-13T23:59:59.000Z

40

Scaling analysis for the ocean motions in single phase natural circulation  

Science Journals Connector (OSTI)

Abstract The effects of ocean motions should be analyzed properly in order to guarantee the safety margin of facilities in the engineering design of floating nuclear reactor system. The scaling analysis for the ocean motions in single phase natural circulation is performed. The scaling criteria for both single ocean motions and compound ocean motions are obtained. The selection and optimization of scaling criteria is also analyzed. The oscillating amplitude in experiments should be kept to be identical to that in actual ocean motions. The oscillating period is determined by the time scale. The length scale, oscillating period and experimental power should be taken into consideration synthetically to obtain a reasonable experimental period.

B.H. Yan; Q.L. Wen

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Phase transitions and entanglement properties in spin-1 Heisenberg clusters with single-ion anisotropy  

E-Print Network [OSTI]

The incipient quantum phase transitions of relevance to nonzero fluctuations and entanglement in Heisenberg clusters are studied in this paper by exploiting negativity as a measure in bipartite and frustrated spin-1 anisotropic Heisenberg clusters with bilinear-biquadratic exchange, single-ion anisotropy and magnetic field. Using the exact diagonalization technique, it is shown that quantum critical points signaled by qualitative changes in behavior of magnetization and particle number are ultimately related to microscopic entanglement and collective excitations. The plateaus and peaks in spin and particle susceptibilities define the conditions for a high/low-density quantum entanglement and various ordered phases with different spin (particle) concentrations.

V S Abgaryan; N S Ananikian; L N Ananikyan; A N Kocharian

2011-06-27T23:59:59.000Z

42

Time domain single-phase reclosure scheme for transmission lines based on dual-Gaussian mixture models  

Science Journals Connector (OSTI)

The basic principle of new adaptive reclosures are to first identify whether a fault is transient or permanent and consequently to determine the reclosing moment. In this paper a novel method to enhance self-adaptive single phase autoreclosure of transmission ... Keywords: Adaptive single phase auto-reclosing (ASPAR), Gaussian mixture models, Transient and permanent faults

S. Jazebi; S. H. Hosseinian; M. Jannati; B. Vahidi

2013-01-01T23:59:59.000Z

43

Photoluminescence Polarization Anisotropy in a Single Heterostructured III-V Nanowire with Mixed Crystal Phases  

SciTech Connect (OSTI)

Low temperature (10 K) micro-photoluminescence ({mu}-PL) of single GaAs/AlGaAs core-shell nanowires with single GaAsSb inserts were measured. The PL emission from the zinc blende GaAsSb insert is strongly polarized along the nanowire axis while the PL emission from the wurtzite GaAs nanowire is perpendiculary polarized to the nanowire axis. The result indicates that the crystal phase, through the optical selection rules, has significant effect on the polarization of the PL from NWs besides the dielectric mismatch. The analysis of the PL results based on the electronic structure of these nanowires supports the correlation between the crystal phase and the PL emission.

Moses, A. F.; Hoang, T. B.; Ahtapodov, L.; Dheeraj, D. L.; Fimland, B. O.; Weman, H. [Department of Electronics and Telecommunications, Norwegian University of Science and Technology, NO - 7491 Trondheim (Norway); Helvoort, A. T. J. van [Department of Physics, Norwegian University of Science and Technology, NO-7491 Trondheim (Norway)

2011-12-23T23:59:59.000Z

44

Electron-microscopy study of the triple-q to single-q phase transition in the incommensurate phase of quartz under stress  

Science Journals Connector (OSTI)

The triple-q to single-q phase transition in quartz has been studied by electron microscopy using a heating straining device, stress being applied along the x axis. The interpretation of the experimental images obtained for small values of stress is in agreement with theoretical predictions. The presence of an intermediate state between the triple-q and single-q modulated phases has been observed for higher values of stress. It can be described as a double-q state where the two wave vectors are tilted from the y direction by an angle of +cphi and -cphi that decreases to 0 in the single-q stripe phase.

E. Snoeck and C. Roucau

1992-06-01T23:59:59.000Z

45

Single Photons from Relativistic Heavy Ion Collisions and Quark-Hadron Phase Transition  

E-Print Network [OSTI]

The present status of theoretical expectations of studies of single photons from relativistic heavy ion collisions is discussed. It is argued that the upper limit of single photon radiation from S+Au collisions at CERN SPS obtained by the WA80 collaboration perhaps rules out any reasonable description of the collision process which does not involve a phase transition to quark gluon plasma. Predictions for single photons from the quark-matter likely to be created in collision of two lead nuclei at RHIC and LHC energies are given with a proper accounting of chemical equilibration and transverse expansion. Finally, it is pointed out that, contrary to the popular belief of a quadrilateral dependence of electromagnetic radiations ($N_\\gamma$) from such collisions on the number of charged particles ($N_{ch})$, we may only have $N_\\gamma \\propto N_{ch}^{1.2}$.

Dinesh Kumar Srivastava

1997-05-29T23:59:59.000Z

46

Production-data analysis of single-phase (gas) coalbed-methane wells  

SciTech Connect (OSTI)

The current work illustrates how single-well production-data-analysis (PDA) techniques, such as type curve, flowing material balance (FMB), and pressure-transient (PT) analysis, may be altered to analyze single-phase CBM wells. Examples of how reservoir inputs to the PDA techniques and subsequent calculations are modified to account for CBM-reservoir behavior are given. This paper demonstrates, by simulated and field examples, that reasonable reservoir and stimulation estimates can be obtained from PDA of CBM reservoirs only if appropriate reservoir inputs (i.e., desorption compressibility, fracture porosity) are used in the analysis. As the field examples demonstrate, type-curve, FMB, and PT analysis methods for PDA are not used in isolation for reservoir-property estimation, but rather as a starting point for single-well and multiwell reservoir simulation, which is then used to history match and forecast CBM-well production (e.g., for reserves assignment). To study the effects of permeability anisotropy upon production, a 2D, single-phase, numerical CBM-reservoir simulator was constructed to simulate single-well production assuming various permeability-anisotropy ratios. Only large permeability ratios ({lt} 16:1) appear to have a significant effect upon single-well production characteristics. Multilayer reservoir characteristics may also be observed with CBM reservoirs because of vertical heterogeneity, or in cases where the coals are commingled with conventional (sandstone) reservoirs. In these cases, the type-curve, FMB, and PT analysis techniques are difficult to apply with confidence. Methods and tools for analyzing multilayer CBM (plus sand) reservoirs are presented. Using simulated and field examples, it is demonstrated that unique reservoir properties may be assigned to individual layers from commingled (multilayer) production in the simple two-layer case.

Clarkson, C.R.; Bustin, R.M.; Seidle, J.P. [ConocoPhillips Canada, Calgary, AB (Canada)

2007-06-15T23:59:59.000Z

47

A Gravitational Search Algorithm (GSA) based Photo-Voltaic (PV) excitation control strategy for single phase operation of three phase wind-turbine coupled induction generator  

Science Journals Connector (OSTI)

Abstract Three phase induction generators are widely used for single phase operation in wind based micro-generation schemes to cater single phase loads due to various advantages. This paper presents an improved control methodology for self excited three phase induction generator operating in single phase mode. The excitation is controlled through an inverter with Photo-Voltaic (PV) panels providing power to the dc bus. The proposed technique enables the generator for building up voltage from low wind speeds compared to conventional three phase machines. A capacitor connected across load terminals reduces the reactive power supplied by the inverter connected across the other two phases. Gravitational search algorithm (GSA) is used to calculate the switching angles of the inverter under various load and wind speeds for minimum Total Harmonic Distortion (THD) of the generated voltage. The proposed induction generator is aimed to be conveniently used in remote and grid isolated areas as a portable source of electrical power driving single phase loads. Simulations and experiments performed on a 3-phase 1 kW, 415 V, 50 Hz, 1440 r/min induction machine validates the proposed concept.

Arunava Chatterjee; Krishna Roy; Debashis Chatterjee

2014-01-01T23:59:59.000Z

48

A Design of Single Phase Induction Generator for Waterfall-hydro Turbine  

Science Journals Connector (OSTI)

Abstract This paper presents the design of the single phase induction generator for hydro turbine that driven by waterfall power. By the principle, when the water from the waterfall flows along the 1 inch pipe until to the nozzle, after that the nozzle directs water jet along a tangent to the circle through the center of the buckets. Finally, the buckets drive the rotor shaft of the single phase induction generator and generated 220 V a.c. voltage for distributing electric load. The design of single phase induction generator is modified by rewiring the winding of an old 1 HP, 220 V, 50 Hz motor from 4 poles to 6 poles. For impulse turbine design, this paper use the information model from Baan Kiriwong waterfall, Nakhorn Sri Thammarat province, south of Thailand for designing the dimension of the components of Pelton turbine with 9 ˝ inches diameter and 18 buckets. The result in laboratory test, at on-load test, the generator can distribute the load at 115.96W, 223 V, 0.52A, 0.96P.F. - lagging with 1,200 rpm of shaft speed. For the applications test, the water pump are set the pressure as similar as the Baan Kiriwong waterfall and when the water jet against the bucket for moving the generator, at on-load test, the generator can distribute the load at 77.9W, 190 V, 0.41A, 0.98P.F. - lagging with 1,100 rpm of shaft speed. It should be suitable for light load rural area and really far from electric distribution system.

Sirichai Dangeam

2013-01-01T23:59:59.000Z

49

Single Photon Production in Relativisitic Heavy Ion Collisions and Quark Hadron Phase Transition  

E-Print Network [OSTI]

We discuss the recent developments in the study of single photon production in relativistic heavy ion collisions. In particular their production at SPS, RHIC, and LHC energies is re-examined in view of the results of Aurenche et al which show that the rate of photon production from quark gluon plasma, evaluated at the order of two loops far exceeds the rates evaluated at one-loop level which have formed the basis of all the estimates of photons so far. We find that the production of photons from quark matter could easily out-shine those from the hadronic matter in certain ideal conditions. We further show that the earlier results lending support to the possibility of quark-hadron phase transition from the measured yield of single photons in $S+Au$ collisions at CERN SPS remain valid when an account is made for these developments, though they leave a scope for the formation of (chemically) non-equilibrated plasma.

Dinesh Kumar Srivastava

1999-11-15T23:59:59.000Z

50

The high-speed operation of single phase switched reluctance motor considering magnetic saturation  

Science Journals Connector (OSTI)

In the high-speed operation of SRM the conventional pulse width modulation (PWM) drive method is not available because of the limitation of switching speed; therefore the single-pulse drive method is commonly employed. On the contrary the use of the single-pulse drive method cannot avoid the overcurrent in the low-speed operation because of the insufficient back emf and the difficulty of duty control. With these reasons the switching method is commonly changed from PWM at the low-speed operation to the single-pulse method at the high-speed operation. In the fan application the required load torque increases as a square of the fan speed; it requires more current for the torque generation. Therefore at the mode transition between PWM and single-pulse drive it is unavoidable that the phase current rapidly increases if the nonlinearity of inductance to the current is not considered. In this paper by using finite element method(FEM) which is considered with the nonlinearity of the inductance with respect to the current the speed of mode transition is calculated (18?000 rpm) and verified by the experiment.

JoonSeon Ahn; Sung Hong Won

2006-01-01T23:59:59.000Z

51

Phases of ethane adsorbed on purified HiPco single-walled carbon nanotubes  

Science Journals Connector (OSTI)

We have used adsorption isotherms to study ethane films on bundles of purified HiPco single-walled carbon nanotubes (SWNTs). We infer the existence of a possible phase transition in this system from a sudden change in the temperature dependence of the coverage interval corresponding to a feature present in the isotherms. The possible phase transition occurs near monolayer completion, at approximately 110K. We also measured isotherms at low fractional coverages and relatively high temperatures (220–240K) in order to determine the binding energy of ethane on the SWNT bundles. We obtained a value of 308meV for this quantity; this is 1.76 times larger than the binding energy of ethane on graphite. We used isotherm results obtained at all measured temperatures and coverages to determine the coverage dependence of the isosteric heat of adsorption for this system.

Dinesh S. Rawat and Aldo D. Migone

2007-05-30T23:59:59.000Z

52

Sampling device for withdrawing a representative sample from single and multi-phase flows  

DOE Patents [OSTI]

A fluid stream sampling device has been developed for the purpose of obtaining a representative sample from a single or multi-phase fluid flow. This objective is carried out by means of a probe which may be inserted into the fluid stream. Individual samples are withdrawn from the fluid flow by sampling ports with particular spacings, and the sampling parts are coupled to various analytical systems for characterization of the physical, thermal, and chemical properties of the fluid flow as a whole and also individually.

Apley, Walter J. (Pasco, WA); Cliff, William C. (Richland, WA); Creer, James M. (Richland, WA)

1984-01-01T23:59:59.000Z

53

Modeling Single-Phase and Boiling Liquid Jet Impingement Cooling in Power Electronics  

SciTech Connect (OSTI)

Jet impingement has been an attractive cooling option in a number of industries over the past few decades. Over the past 15 years, jet impingement has been explored as a cooling option in microelectronics. Recently, interest has been expressed by the automotive industry in exploring jet impingement for cooling power electronics components. This technical report explores, from a modeling perspective, both single-phase and boiling jet impingement cooling in power electronics, primarily from a heat transfer viewpoint. The discussion is from the viewpoint of the cooling of IGBTs (insulated-gate bipolar transistors), which are found in hybrid automobile inverters.

Narumanchi, S. V. J.; Hassani, V.; Bharathan, D.

2005-12-01T23:59:59.000Z

54

Processing and analysis of polycrystalline thin-film solar cells made from uniform single phase materials  

SciTech Connect (OSTI)

This paper presents processes for producing uniform single phase polycrystalline films of Cu(InGa)Se{sub 2} and CdTe and the analysis of the resulting films and solar cell devices. The first two sections discuss Cu(InGa)Se{sub 2} cells prepared by the selenization of Cu-In-Ga films and of elemental evaporation. The third section describes a CdCl{sub 2} vapor treatment of CdTe that results in uniform large grain films with reduced {ital S} diffusion and reproducible performance. {copyright} {ital 1996 American Institute of Physics.}

Birkmire, R.W.; Hichri, H.; Klenk, R.; Marudachalam, M.; McCandless, B.E.; Phillips, J.E.; Schultz, J.M.; Shafarman, W.N. [Institute of Energy Conversion, Department of Energy, University Center of Excellence for Photovoltaic, Research and Education (National Renewable Energy Laboratory), University of Delaware, Newark, Delaware 19716 (United States)

1996-01-01T23:59:59.000Z

55

Free Energy and Specific Heat in Ferroelectric Phase Transition in Terms of a Single-Mode Anharmonic Oscillator Model  

Science Journals Connector (OSTI)

...Copyright (c) 1971 Progress of Theoretical Physics March 1971 letter Letters to the Editor Free Energy and Specific Heat in Ferroelectric Phase Transition in Terms of a Single-Mode Anharmonic Oscillator Model Yositaka Onodera Department......

Yositaka Onodera

1971-03-01T23:59:59.000Z

56

Free Energy and Specific Heat in Ferroelectric Phase Transition in Terms of a Single-Mode Anharmonic Oscillator Model  

Science Journals Connector (OSTI)

...Copyright (c) 1976 Progress of Theoretical Physics March 1976 correction Errata Free Energy and Specific Heat in Ferroelectric Phase Transition in Terms of a Single-Mode Anharmonic Oscillator Model Yositaka Onodera The......

Yositaka Onodera

1976-03-01T23:59:59.000Z

57

Cancellation of four-wave mixing in a single-mode fiber by midway optical phase conjugation  

Science Journals Connector (OSTI)

Cancellation of waves generated by four-wave mixing (FWM) in a single-mode fiber by use of midway optical phase conjugation is proposed and analyzed, and the possible power reduction...

Watanabe, Shigeki

1994-01-01T23:59:59.000Z

58

Impossibility of large phase shifts via the giant Kerr effect with single-photon wave packets  

SciTech Connect (OSTI)

An approximate analytical solution is presented, along with numerical calculations, for a system of two single-photon wave packets interacting via an ideal, localized Kerr medium. It is shown that, because of spontaneous emission into the initially unoccupied temporal modes, the cross-phase-modulation in the Schroedinger picture is very small as long as the spectral width of the single-photon pulses is well within the medium's bandwidth. In this limit, the Hamiltonian used can be derived from the 'giant Kerr effect' for a four-level atom, under conditions of electromagnetically induced transparency; it is shown explicitly that the linear absorption in this system increases as the pulse's spectral width approaches the medium's transparency bandwidth, and hence, as long as the absorption probability remains small, the maximum cross-phase-modulation is limited to essentially useless values. These results are in agreement with the general, causality-based, and unitarity-based arguments of Shapiro and Razavi [J. H. Shapiro, Phys. Rev. A 73, 062305 (2006); J. H. Shapiro and M. Razavi, New J. Phys. 9, 16 (2007)].

Gea-Banacloche, Julio [Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701 (United States)

2010-04-15T23:59:59.000Z

59

14 kV single-phase superconducting fault current limiter based on YBCO films  

Science Journals Connector (OSTI)

We present the fabrication and short circuit test results of a 14 kV single-phase resistive superconducting fault current limiter (SFCL) based on \\{YBa2Cu3O7\\} (YBCO) films. Individual components were processed using the 4? YBCO films and have the rated voltage and current of 600 V and 35 A at 77 K, respectively. Twenty four components, eight components in series and three lines in parallel, make a module having the rated voltage and current of 4.8 kV and 105 A, respectively. Three modules were assembled in series to produce the SFCL working at 77 K, a 14 kV single-phase machine for the 22.9 kV Y–Y grid. short circuit tests were successfully conducted in an accredited test facility with the maximum fault currents up to 14.1 kAP. All components quenched together upon faults and shared the rated voltage evenly without any supplementary device between the modules. This proves that the SFCL based on YBCO films may not only work reliably at 22.9 kV, but also provide technical feasibility for higher voltage application including the transmission grids.

J. Sim; K.B. Park; H.R. Kim; J.S. Kang; B.W. Lee; H.M. Kim; I.S. Oh; O.B. Hyun

2007-01-01T23:59:59.000Z

60

Optimization of induction motor efficiency: Volume 2, Single-phase induction motors: Final report  

SciTech Connect (OSTI)

The optimal design of the motor dimensions, the capacitance of the run capacitor, the winding distribution and the choice of the electrical steel are the most important sources for an improvement of the efficiency of modern single-phase induction motors for given performance and material cost constraints. The formulation of the techniques which realize this optimization is based on nonlinear programming approaches. The Method of Boundary Search Along Active Constraints is used for the optimal design of the motor dimensions of a commercially available 2 hp, 115 V single-phase induction motor. Based on the optimization results due to the above mentioned four optimization components, the relationships between efficiency, power factor, cost, active materials and the values of the capacitance of the run capacitor are studied and the limited validity of the model law is discussed. This report also explains why the Wanlass retrofit improves efficiency and details the advantages and disadvantages of such a retrofitting as compared with the operation in the standard configuration.

Fuchs, E.F.; Huang, H.; Vandenput, A.J.; Holl, J.; Appelbaum, J.; Zak, Z.; Erlicki, M.S.

1987-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Droop based control of parallel-connected single-phase inverters in D-Q rotating frame  

Science Journals Connector (OSTI)

In this paper, control of parallel single-phase inverters in Direct-Quadrature(DQ) rotating frame based on droop method is proposed. For each inverter, a secondary orthogonal imaginary circuit is created to provide the second phase required for the transformation; ...

Saeed Golestan; Mahmood Joorabian; Hasan Rastegar; Arman Roshan; Josep M. Guerrero

2009-02-01T23:59:59.000Z

62

Formation of Hydrates from Single-Phase Aqueous Solutions and Implications for Oceanic Sequestration of CO2  

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

Formation of Hydrates from Single-Phase Aqueous Solutions Formation of Hydrates from Single-Phase Aqueous Solutions and Implications for Oceanic Sequestration of CO 2 . G. Holder (holder@engrng.pitt.edu) 412-624-9809 L. Mokka (lakshmi.mokka@netl.doe.gov) 412-386-6019 Department of Chemical and Petroleum Engineering University of Pittsburgh Pittsburgh, PA 15261 R. Warzinski* (robert.warzinski@netl.doe.gov) 412-386-5863 U.S. Department of Energy National Energy Technology Laboratory P.O. Box 10940 Pittsburgh, PA 15236-0940 Introduction a Gas hydrates are crystalline solids formed from mixtures of water and low molecular weight compounds, referred to as hydrate formers, that typically are gases at ambient conditions (1). Generally, hydrates are formed in the laboratory from two-phase systems by contacting a hydrate former or formers in the gas or liquid phase with liquid water and increasing the pressure until

63

First order phase transition and superconductivity in BaNi2As2 single crystals  

SciTech Connect (OSTI)

We report the synthesis and physical properties of single crystals of stoichiometric BaNi{sub 2}As{sub 2} which crystallizes in the ThCr{sub 2}Si{sub 2} structure type with lattice parameters a = 4.112(4) {angstrom} and c = 11.54(2) {angstrom}. Resistivity and heat capacity show a first order phase transition at T{sub 0} = 130 K with a thermal hysteresis of 7 K. The Hall coefficient is weakly temperature dependent from room temperature to 2 K where it has a value of -4 x 10{sup -10} {Omega}-cm/Oe. Resist.ivity, ac-susceptibility, and heat capacity find evidence for bulk superconductivity at T{sub c} = 0.7 K. The Sommerfeld coefficient at T{sub c} is 11.6 {+-} 0.9 mJ/ molK{sup 2}. The upper critical field is anisotropic with initial slopes of dH{sub c2}{sup c}/dT = -0.19 T/K and dH{sub c2}{sup ab}/dT = -0.40 T/K, as determined by resistivity.

Ronning, F [Los Alamos National Laboratory; Kurita, N [Los Alamos National Laboratory; Bauer, E D [Los Alamos National Laboratory; Scott, B L [Los Alamos National Laboratory; Park, T [Los Alamos National Laboratory; Klimczuk, T [Los Alamos National Laboratory; Movshovich, R [Los Alamos National Laboratory; Thompson, J D [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

64

DSP-based fuzzy load controller for single phase self-excited induction generator  

Science Journals Connector (OSTI)

This paper presents the design and implementation of a fuzzy logic-based load controller to regulate the voltage and frequency of single phase self-excited induction generator (SEIG), suitable for standalone operation. The SEIG can be used to generate constant voltage and frequency if the load is maintained constant at its terminals. Moreover, under such operation, SEIG requires constant capacitance for excitation resulting in a fixed-point operation. For this purpose, a suitable control scheme is to be developed such that the load on the SEIG remains constant despite the change in the consumer load. A DSP-based fuzzy load controller has been developed based on equal time ratio control (ETRC) AC chopper controllable load which gives non-linear control with fast response and injects minimum harmonics in the system. The transient behaviour of DSP-based SEIG-fuzzy load controller system at different operating conditions such as application and removal of static (resistive and reactive) load is investigated.

D.K. Palwalia

2011-01-01T23:59:59.000Z

65

NUMERICAL VERIFICATION OF THE RELAP-7 CORE CHANNEL SINGLE-PHASE MODEL  

SciTech Connect (OSTI)

The RELAP-7 code is the next generation of nuclear reactor system safety analysis code being developed at the Idaho National Laboratory (INL). All the physics in RELAP-7 are fully coupled and the errors resulted from the traditional operator-splitting approach are eliminated. By using 2nd order methods in both time and space and eliminating operator-splitting errors, the numerical error of RELAP-7 can be minimized. Numerical verification is the process to verify the orders of numerical methods. It is an important part of modern verification and validation process. The core channel component in RELAP-7 is designed to simulate coolant flow as well as the conjugated heat transfer between coolant flow and the fuel rod. A special treatment at fuel centerline to avoid numerical singularity for the cylindrical heat conduction in the continuous finite element mesh is discussed. One steady state test case and one fast power up transient test case are utilized for the verification of the core channel model with single-phase flow. Analytical solution for the fuel pin temperature and figures of merit such as peak clad temperature and peak fuel temperature are used to define numerical errors. These cases prove that the mass and energy are well conserved and 2nd order convergence rates for both time and space are achieved in the core channel model.

Haihua Zhao; Ling Zou; Hongbin Zhang; Richard Martineau

2014-06-01T23:59:59.000Z

66

A single-phase model for liquid-feed \\{DMFCs\\} with non-Tafel kinetics  

Science Journals Connector (OSTI)

An isothermal single-phase 3D/1D model for liquid-feed direct methanol fuel cells (DMFC) is presented. Three-dimensional (3D) mass, momentum and species transport in the anode channels and gas diffusion layer is modeled using a commercial, finite-volume based, computational fluid dynamics (CFD) software complemented with user supplied subroutines. The 3D model is locally coupled to a one-dimensional (1D) model accounting for the electrochemical reactions in both the anode and the cathode, which provides a physically sound boundary condition for the velocity and methanol concentration fields at the anode gas diffusion layer/catalyst interface. The 1D model – comprising the membrane–electrode assembly, cathode gas diffusion layer, and cathode channel – assumes non-Tafel kinetics to describe the complex kinetics of the multi-step methanol oxidation reaction at the anode, and accounts for the mixed potential associated with methanol crossover, induced both by diffusion and electro-osmotic drag. Polarization curves computed for various methanol feed concentrations, temperatures, and methanol feed velocities show good agreement with recent experimental results. The spatial distribution of methanol in the anode channels, together with the distributions of current density, methanol crossover and fuel utilization at the anode catalyst layer, are also presented for different opperating conditions.

Marcos Vera

2007-01-01T23:59:59.000Z

67

Microjet array single-phase and flow boiling heat transfer with R134a Eric A. Browne a  

E-Print Network [OSTI]

of a submerged microjet array was conducted with R134a. The staggered array of seventeen 112-lm diameter orifices blades and quench metals. Many of these practical uses of jets employ an array of jets rather than circular microjets of diameter 112 lm on a 1 Ă? 1 mm heater to investigate single-phase and boiling heat

Peles, Yoav

68

Experimental and numerical study of pressure drop and heat transfer in a single-phase micro-channel heat sink  

E-Print Network [OSTI]

Experimental and numerical study of pressure drop and heat transfer in a single-phase micro Received 6 July 2001; received in revised form 26 October 2001 Abstract The pressure drop and heat transfer-dimensional heat transfer characteristics of the heat sink were analyzed numerically by solving the conjugate heat

Qu, Weilin

69

Design and Realization of Autonomous Power CMOS Single Phase Inverter and Rectifier for Low Power Conditioning Applications  

E-Print Network [OSTI]

Design and Realization of Autonomous Power CMOS Single Phase Inverter and Rectifier for Low Power operate as an inverter or as a rectifier in a wide range of power flows and input voltages. Three of the inverter reaches up to 92% as a function of input voltage with these conditions. The second experimental

Paris-Sud XI, Université de

70

A single-phase, non-isothermal model for PEM fuel cells Hyunchul Ju, Hua Meng, Chao-Yang Wang *  

E-Print Network [OSTI]

A single-phase, non-isothermal model for PEM fuel cells Hyunchul Ju, Hua Meng, Chao-Yang Wang October 2004 Available online 8 December 2004 Abstract A proton exchange membrane (PEM) fuel cell produces a comprehensive study of thermal and water management in PEM fuel cells. Numerical simulations reveal

71

Safe-commutation principle for direct single-phase AC-AC converters for use in audio power  

E-Print Network [OSTI]

Safe-commutation principle for direct single-phase AC-AC converters for use in audio power-stage AC-AC audio power amplifiers. As compared with the bridge commutation with load current or source is certainly the audio power amplification. Switching-mode Class D audio power amplifiers are becoming

72

Entanglement and quantum phase transition in a mixed-spin Heisenberg chain with single-ion anisotropy  

Science Journals Connector (OSTI)

We study the ground-state and thermal entanglement in the mixed-spin ( S , s ) = ( 1 , 1 / 2 ) Heisenberg chain with single-ion anisotropy D using exact diagonalization of small clusters. In this system, a quantum phase transition is revealed to occur at the value D = 0 , which is the bifurcation point for the global ground state; that is, when the single-ion anisotropy energy is positive, the ground state is unique, whereas when it is negative, the ground state becomes doubly degenerate and the system has the ferrimagnetic long-range order. Using the negativity as a measure of entanglement, we find that a pronounced dip in this quantity, taking place just at the bifurcation point, serves to signal the quantum phase transition. Moreover, we show that the single-ion anisotropy helps to improve the characteristic temperatures above which the quantum behavior disappears.

E. Solano-Carrillo; R. Franco; J. Silva-Valencia

2011-01-01T23:59:59.000Z

73

Single- and two-phase flow in microfluidic porous media analogs based on Voronoi tessellation  

SciTech Connect (OSTI)

The objective of this study was to create a microfluidic model of complex porous media for studying single and multiphase flows. Most experimental porous media models consist of periodic geometries that lend themselves to comparison with well-developed theoretical predictions. However, most real porous media such as geological formations and biological tissues contain a degree of randomness and complexity that is not adequately represented in periodic geometries. To design an experimental tool to study these complex geometries, we created microfluidic models of random homogeneous and heterogeneous networks based on Voronoi tessellations. These networks consisted of approximately 600 grains separated by a highly connected network of channels with an overall porosity of 0.11 0.20. We found that introducing heterogeneities in the form of large cavities within the network changed the permeability in a way that cannot be predicted by the classical porosity-permeability relationship known as the Kozeny equation. The values of permeability found in experiments were in excellent agreement with those calculated from three-dimensional lattice Boltzmann simulations. In two-phase flow experiments of oil displacement with water we found that the surface energy of channel walls determined the pattern of water invasion, while the network topology determined the residual oil saturation. These results suggest that complex network topologies lead to fluid flow behavior that is difficult to predict based solely on porosity. The microfluidic models developed in this study using a novel geometry generation algorithm based on Voronoi tessellation are a new experimental tool for studying fluid and solute transport problems within complex porous media.

Wu, Mengjie [Colorado School of Mines, Golden; Xiao, Feng [Colorado School of Mines, Golden; Johnson-Paben, Rebecca [Colorado School of Mines, Golden; Retterer, Scott T [ORNL; Yin, Xiaolong [Colorado School of Mines, Golden; Neeves, Keith B [ORNL

2012-01-01T23:59:59.000Z

74

PARS II Process Document – Project Phasing (Multiple CD-2 from Single CD-1)  

Broader source: Energy.gov [DOE]

This document details the process by which projects that adopted Phasing approach (different phases of the same larger project are treated as separate sub-projects, resulting in multiple CD-2...

75

Performance analysis of a new configuration of three-phase self-excited induction generator feeding a single-phase load  

Science Journals Connector (OSTI)

This paper presents a steady-state performance analysis for a new configuration of self-regulated self-excited three-phase squirrel cage induction generator feeding single phase loads. The proposed scheme provides the required reactive power for excitation, small voltage regulation, acceptable phase balance and large output power. Using an equivalent circuit model incorporated with the method of symmetrical components, the total impedance equation of the generator's model is derived. This non-linear equation is minimised to obtain the operating frequency and magnetising reactance. Based on the derived circuit model, the performance of the generator under different operating conditions is predicted. To confirm the validity of the proposed scheme, simulation results are compared with their corresponding test results.

Yaser N. Anagreh; Nassim Ahmad Iqteit; Sameer F. Mohammad

2013-01-01T23:59:59.000Z

76

Accelerated safety analyses - structural analyses Phase I - structural sensitivity evaluation of single- and double-shell waste storage tanks  

SciTech Connect (OSTI)

Accelerated Safety Analyses - Phase I (ASA-Phase I) have been conducted to assess the appropriateness of existing tank farm operational controls and/or limits as now stipulated in the Operational Safety Requirements (OSRs) and Operating Specification Documents, and to establish a technical basis for the waste tank operating safety envelope. Structural sensitivity analyses were performed to assess the response of the different waste tank configurations to variations in loading conditions, uncertainties in loading parameters, and uncertainties in material characteristics. Extensive documentation of the sensitivity analyses conducted and results obtained are provided in the detailed ASA-Phase I report, Structural Sensitivity Evaluation of Single- and Double-Shell Waste Tanks for Accelerated Safety Analysis - Phase I. This document provides a summary of the accelerated safety analyses sensitivity evaluations and the resulting findings.

Becker, D.L.

1994-11-01T23:59:59.000Z

77

Entanglement spectrum and quantum phase transitions in one-dimensional XXZ model with uniaxial single-ion anisotropy  

Science Journals Connector (OSTI)

Abstract Quantum phase transitions (QPTs) in one-dimensional S = 1 XXZ model with uniaxial single-ion anisotropy are investigated. Bipartite entanglement, entanglement spectrum, and Schmidt gap are found to be capable of describing all the QPTs, even the infinite-order Berezinskii–Kosterlitz–Thouless (BKT) transition. According to the singular behavior of the second-order derivative of ground-state energy, the QPT between XY2 and antiferromagnetic phases is a second-order but not a BKT transition. Energy level crossing, accompanied with discontinuous entanglement entropy and entanglement spectrum, is observed at the transition point between the large-D and antiferromagnetic phases, therefore it should be a first-order QPT. In addition, doubly degenerate entanglement spectrum in the Haldane phase is observed.

Guang-Hua Liu; Wei Li; Wen-Long You; Gang Su; Guang-Shan Tian

2014-01-01T23:59:59.000Z

78

A grating-based single-shot x-ray phase contrast and diffraction method for in vivo imaging  

SciTech Connect (OSTI)

Purpose: The purpose of this study is to develop a single-shot version of the grating-based phase contrast x-ray imaging method and demonstrate its capability of in vivo animal imaging. Here, the authors describe the principle and experimental results. They show the source of artifacts in the phase contrast signal and optimal designs that minimize them. They also discuss its current limitations and ways to overcome them. Methods: A single lead grid was inserted midway between an x-ray tube and an x-ray camera in the planar radiography setting. The grid acted as a transmission grating and cast periodic dark fringes on the camera. The camera had sufficient spatial resolution to resolve the fringes. Refraction and diffraction in the imaged object manifested as position shifts and amplitude attenuation of the fringes, respectively. In order to quantify these changes precisely without imposing a fixed geometric relationship between the camera pixel array and the fringes, a spatial harmonic method in the Fourier domain was developed. The level of the differential phase (refraction) contrast as a function of hardware specifications and device geometry was derived and used to guide the optimal placement of the grid and object. Both ex vivo and in vivo images of rodent extremities were collected to demonstrate the capability of the method. The exposure time using a 50 W tube was 28 s. Results: Differential phase contrast images of glass beads acquired at various grid and object positions confirmed theoretical predictions of how phase contrast and extraneous artifacts vary with the device geometry. In anesthetized rats, a single exposure yielded artifact-free images of absorption, differential phase contrast, and diffraction. Differential phase contrast was strongest at bone-soft tissue interfaces, while diffraction was strongest in bone. Conclusions: The spatial harmonic method allowed us to obtain absorption, differential phase contrast, and diffraction images, all from a single raw image and is feasible in live animals. Because the sensitivity of the method scales with the density of the gratings, custom microfabricated gratings should be superior to off-the-shelf lead grids.

Bennett, Eric E.; Kopace, Rael; Stein, Ashley F.; Wen Han [National Heart, Lung, and Blood Institute, National Institutes of Health, Imaging Physics Section, Translational Medicine Branch, 10 Center Drive, MSC 1061, Bethesda, Maryland 20892 (United States)

2010-11-15T23:59:59.000Z

79

Magnetic phase diagram of the S=1/2 triangular layered compound NaNiO2: a single crystal study  

E-Print Network [OSTI]

Magnetic phase diagram of the S=1/2 triangular layered compound NaNiO2: a single crystal study S de Magnetic Field Laboratory, CNRS, BP166, F-38042 Grenoble cedex 9, France Abstract. Using magnetic torque measurement on a NaNiO2 single crystal, we have established the magnetic phase diagram of this triangular

Boyer, Edmond

80

Massive parallel generation of indistinguishable single photons via polaritonic superfluid to Mott-insulator quantum phase transition  

E-Print Network [OSTI]

We propose the superfluid to Mott-insulator quantum phase transition in an array of exciton-polariton traps can be utilized for massive parallel generation of indistinguishable single photons. By means of analytical and numerical methods, the device operations and system properties are studied using realistic experimental parameters. Such a deterministic, fault-tolerant, massive parallel generation may open up a new perspective in photonic quantum information processing.

Neil Na; Yoshihisa Yamamoto

2008-04-11T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Anomalous thermal conduction characteristics of phase change composites with single walled carbon nanotube inclusions  

E-Print Network [OSTI]

of the phase change materials, because low thermal conductivity hinders the rate of energy storage and release of the new way of improving the thermal conductivity of phase change materials by seeding nano materials way to manipulate the thermal conductivity of nano composites using one dimensional nano material

Maruyama, Shigeo

82

TNX GeoSiphon Cell (TGSC-1) Phase II Single Cell Deployment/Demonstration Final Report  

SciTech Connect (OSTI)

This Phase II final report documents the Phase II testing conducted from June 18, 1998 through November 13, 1998, and it focuses on the application of the siphon technology as a sub-component of the overall GeoSiphon Cell technology. [Q-TPL-T-00004

Phifer, M.A.

1999-04-15T23:59:59.000Z

83

Phase transition and ferrimagnetic long-range order in the mixed-spin Heisenberg model with single-ion anisotropy  

Science Journals Connector (OSTI)

In the present paper, we study the quantum phase transition in the mixed-spin Heisenberg model with the single-ion anisotropy on a bipartite lattice. We prove rigorously that, when the single-ion anisotropy energy D is positive, the model has a unique ground state with the total spin-z component Sz=0. On the other hand, when the single-ion anisotropy energy is negative and favors the longitudinal spin direction, the global ground state of the system becomes doubly degenerate. Therefore, D=0 is the bifurcation point for the global ground state of the system. Furthermore, we show also that, in the latter case, the global ground state of the mixed-spin Heisenberg chain has the ferrimagnetic long-range order. Our conclusions confirm and generalize the previous results derived by numerical calculations on small size samples.

Guang-Shan Tian and Hai-Qing Lin

2004-09-21T23:59:59.000Z

84

Single and two-photon fluorescence control of Er{sup 3+} ions by phase-shaped femtosecond laser pulse  

SciTech Connect (OSTI)

We experimentally demonstrate the control of the single and two-photon fluorescence (SPF and TPF) in Er{sup 3+} ions by shaping the femtosecond laser pulse with a ? or square phase modulation. With the low laser intensity (8.4?×?10{sup 10}?W/cm{sup 2}), SPF keeps a constant while TPF is effectively suppressed by the two control schemes. With the high laser intensity (1.2?×?10{sup 13}?W/cm{sup 2}), both SPF and TPF are simultaneously enhanced or suppressed by the ? phase modulation, and SPF is enhanced while TPF is effectively suppressed by the square phase modulation. The up/down-conversion fluorescence enhancement, suppression, or tuning by the optical control method can greatly expand its applications in various related fields.

Zhang, Shian, E-mail: sazhang@phy.ecnu.edu.cn; Ding, Jingxin; Lu, Chenhui; Jia, Tianqing; Sun, Zhenrong, E-mail: zrsun@phy.ecnu.edu.cn [State Key Laboratory of Precision Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062 (China)] [State Key Laboratory of Precision Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062 (China); Xu, Shuwu [State Key Laboratory of Precision Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062 (China) [State Key Laboratory of Precision Spectroscopy, and Department of Physics, East China Normal University, Shanghai 200062 (China); School of Science, Nantong University, Nantong 226007 (China); Qiu, Jianrong [State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Wushan Road 381, Guangzhou 510640 (China)] [State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Wushan Road 381, Guangzhou 510640 (China)

2014-01-06T23:59:59.000Z

85

Phase 1 RCRA Facility Investigation & Corrective Measures Study Work Plan for Single Shell Tank (SST) Waste Management Areas  

SciTech Connect (OSTI)

This document is the master work plan for the Resource Conservation and Recovery Act of 1976 (RCRA) Corrective Action Program (RCAP) for single-shell tank (SST) farms at the US. Department of Energy's (DOE'S) Hanford Site. The DOE Office of River Protection (ORP) initiated the RCAP to address the impacts of past and potential future tank waste releases to the environment. This work plan defines RCAP activities for the four SST waste management areas (WMAs) at which releases have contaminated groundwater. Recognizing the potential need for future RCAP activities beyond those specified in this master work plan, DOE has designated the currently planned activities as ''Phase 1.'' If a second phase of activities is needed for the WMAs addressed in Phase 1, or if releases are detected at other SST WMAs, this master work plan will be updated accordingly.

MCCARTHY, M.M.

1999-08-01T23:59:59.000Z

86

E-Print Network 3.0 - alternating-phase fed single-layer Sample...  

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

AND GUIDED WAVE LETTERS, VOL. 10, NO. 2, FEBRUARY 2000 A Single-Layer CPW-FED Active Patch Antenna Summary: 64 IEEE MICROWAVE AND GUIDED WAVE LETTERS, VOL. 10, NO. 2, FEBRUARY...

87

Phase transitions in the two-dimensional single-ion anisotropic Heisenberg model with long-range interactions  

Science Journals Connector (OSTI)

Abstract In the present work, we investigate the effects of long-range interactions on the phase transitions of a two-dimensional Heisenberg model with single-ion anisotropy at zero and finite temperatures. The Hamiltonian is given by H = ? i ? j J ij ( S i x S j x + S i y S j y + ? S i z S j z ) + D ? i ( S i z ) 2 , where J ij = ? J | r j ? r i | ? p ( p ? 3 ) is a long-range ferromagnetic interaction ( J > 0 ) , 0 ? ? ? 1 is an anisotropic constant and D is the single-ion anisotropic constant. It is well-known that the single-ion anisotropy D creates a competition between an ordered state (favored by the exchange interaction) and a disordered state, even at zero temperature. For small values of D, the system has a spontaneous magnetization m z ? 0 , while in the large-D phase mz=0 because a state with ? S z ? ? 0 is energetically unfavorable. Therefore a phase transition takes a place in some critical value Dc due to quantum fluctuations. For systems with short-range interaction Dc?6 J (depending of ? constant) but in our model we have found larger values of D due to the higher cost to flip a spin. Since low-dimensional magnetic systems with long range interaction can be ordered at finite temperature, we also have analyzed the thermal phase transitions (similar to the BKT transition). The model has been studied by using a Schwinger boson formalism as well as the self-consistent harmonic approximation (SCHA) and both methods provide according results.

A.R. Moura

2014-01-01T23:59:59.000Z

88

COMMIX-1AR/P: A three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems  

SciTech Connect (OSTI)

The COMMIX-1AR/P computer program is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-1A to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a k-[var epsilon] model for fluid turbulence, and improved numerical techniques. The porous-medium formulation in COMMIX allows the program to be applied to a wide range of problems involving both simple and complex geometrical arrangements. The input preparation and execution procedures are presented for the COMMIX-1AR/P program and several postprocessor programs which produce graphical displays of the calculated results.

Garner, P.L.; Blomquist, R.N.; Gelbard, E.M.

1992-09-01T23:59:59.000Z

89

COMMIX-1AR/P: A three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems  

SciTech Connect (OSTI)

The COMMIX-LAR/P computer program is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-lA to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a keg model for fluid turbulence, and improved numerical techniques. The porous-medium formulation in COMMIX allows the program to be applied to a wide range of problems involving both simple and complex geometrical arrangements. The internal aspects of the COMMIX-LAR/P program are presented, covering descriptions of subprograms, variables, and files.

Garner, P.L.; Blomquist, R.N.; Gelbard, E.M.

1992-09-01T23:59:59.000Z

90

Single Location Doublet Well to Reduce Salt-Water Encroachment: Phase I-Numerical Simulation  

E-Print Network [OSTI]

C. E. Jacob received patents in 1965 for a single location well doublet that would produce fresh water overlying salt-water without upconing of the heavier salt-water and pollution of the fresh water zone. No known evaluation of the concept...

Reddell, D. L.

91

Phase matrix and cross sections for single scattering by circular cylinders: a comparison of ray optics  

E-Print Network [OSTI]

optics and wave theory Yoshihide Takano and Masayuki Tanaka The phase matrix and several quantities of ray optics, which includes geometrical reflection and refraction plus Fraunhofer diffraction optics approximations for m = 1.31-O.Oi and 1.31-0.li. Results by these methods approach oneanother

Takano, Yoshihide

92

Exergy analysis of second-generation micro heat sinks under single-phase and flow boiling conditions  

Science Journals Connector (OSTI)

A parametric study of exergy efficiency was conducted for five micro pin fin heat sinks of different spacing and shapes. Of the four micro pin fin heat sinks tested under single-phase flow conditions, those with better heat transfer performance yielded superior exergy efficiencies. The use of R-123 in place of water as working fluid was found to enhance exergetic performance at the expense of reduced heat transfer performance. The exergy analysis was also extended to the flow boiling of R-123 in an additional hydrofoil-based micro pin fin heat sink. It was found that exergy efficiencies decreased with mass velocity.

Ali Kosar

2010-01-01T23:59:59.000Z

93

A Five-Level Cascade Multilevel Inverter Three-Phase Motor Drive Using a Single DC Source  

SciTech Connect (OSTI)

A method is presented showing that a 5-level cascade multilevel inverter for a three-phase permanent magnet sychronous motor drive can be implemented using only a single DC link to supply a standard 3-leg inverter along with three full H-bridges supplied by capacitors. It is shown that the capacitor voltages can be regulated while achieving an output voltage waveform that is 20% greater than that obained using the standard 3-leg inverter alone. Finally conditions are given in terms of the power factor and modulation index that determine when the capacitor voltage can regulated.

Chiasson, J. N. [University of Tennessee, Knoxville (UTK)

2006-10-01T23:59:59.000Z

94

A Five-Level Cascade Multilever Invertor Three-Phase Motor Drive Using a Single DC Source  

SciTech Connect (OSTI)

A method is presented showing that a 5-level cascade multilevel inverter for a three-phase permanent magnet synchronous motor drive can be implemented using only a single DC link to supply a standard 3-leg inverter along with three full H-bridges supplied by capacitors. It is shown that the capacitor voltages can be regulated while achieving an output voltage waveform that is 20% greater than that obtained using the standard 3-leg inverter alone. Finally conditions are given in terms of the power factor and modulation index that determine when the capacitor voltage can regulated.

Chiasson, J.N. (Univ. Tennessee-Knoxville)

2006-09-15T23:59:59.000Z

95

On the validation of magnetic resonance velocimetry in single-phase turbulent pipe flows  

SciTech Connect (OSTI)

A nuclear magnetic resonance imaging technique is used to measure velocity distributions in turbulent pipe flows up to Re = 24580. While turbulent intensity is usually determined from signal attenuation, we deduce turbulent intensity from velocity distribution with no need to suppose a Gaussian distribution for velocity fluctuations. Skewness and flatness measurements are also presented in this paper. Comparison with DNS show good agreement and we show that NMR data is sufficiently accurate to provide turbulent viscosity profile. The low field system used in this study allow the suppression of susceptibility artifacts and thus open its use for studying two-phase flows. We postulate that the method used here could be applied to two-phase flows and would thus provide valuable information on turbulent viscosity models. (authors)

Jullien, P.; Lemonnier, H. [CEA Grenoble, DTN LITA SE2T, F-38054 Grenoble 9, (France)

2012-03-15T23:59:59.000Z

96

Real Power and Reactive Power Control of a Three-Phase Single-Stage-PV System and PV voltage Stability  

SciTech Connect (OSTI)

Grid-connected photovoltaic (PV) systems with power electronic interfaces can provide both real and reactive power to meet power system needs with appropriate control algorithms. This paper presents the control algorithm design for a three-phase single-stage grid-connected PV inverter to achieve either maximum power point tracking (MPPT) or a certain amount of real power injection, as well as the voltage/var control. The switching between MPPT control mode and a certain amount of real power control mode is automatic and seamless. Without the DC-to-DC booster stage, PV DC voltage stability is an important issue in the control design especially when the PV inverter is operating at maximum power point (MPP) with voltage/var control. The PV DC voltage collapse phenomenon and its reason are discussed. The method based on dynamic correction of the PV inverter output is proposed to ensure PV DC voltage stability. Simulation results of the single-stage PV system during system disturbances and fast solar irradiation changes confirm that the proposed control algorithm for single-stage PV inverters can provide appropriate real and reactive power services and ensure PV DC voltage stability during dynamic system operation and atmospheric conditions.

Li, Huijuan [ORNL] [ORNL; Xu, Yan [ORNL] [ORNL; Adhikari, Sarina [ORNL] [ORNL; Rizy, D Tom [ORNL] [ORNL; Li, Fangxing [ORNL] [ORNL; Irminger, Philip [ORNL] [ORNL

2012-01-01T23:59:59.000Z

97

Anharmonicity and isomorphic phase transition: a multi-temperature X-ray single-crystal and powder diffraction study of 1-(2'-aminophenyl)-2-methyl-4-nitroimidazole  

Science Journals Connector (OSTI)

Multi-temperature single-crystal and powder diffraction experiments on 1-(2'-aminophenyl)-2-methyl-4-nitroimidazole show that this crystal undergoes an isomorphic phase transition with the coexistence of two phase domains over a wide temperature range. The anharmonic approach was the only way to model the resulting disorder.

Poulain, A.

2014-02-28T23:59:59.000Z

98

SAMFT1D: Single-phase and multiphase flow and transport in 1 dimension. Version 2.0, Documentation and user`s guide  

SciTech Connect (OSTI)

This report documents a one-dimensional numerical model, SAMFT1D, developed to simulate single-phase and multiphase fluid flow and solute transport in variably saturated porous media. The formulation of the governing equations and the numerical procedures used in the code for single-phase and multiphase flow and transport are presented. The code is constructed to handle single-phase as well as two or three-phase flow conditions using two integrated sets of computational modules. The fully implicit scheme is used in the code for both single-phase and multiphase flow simulations. Either the Crank-Nicholson scheme or the fully implicit scheme may be used in the transport simulation. The single-phase modules employ the Galerkin and upstream weighted residual finite element techniques to model flow and transport of water (aqueous phase) containing dissolved single-species contaminants concurrently or sequentially, and include the treatment of various boundary conditions and physical processes. The multiphase flow modules use block-centered finite difference techniques to simulate two or three-phase flow problems, and treat different boundary conditions in terms of source/sink terms fully implicitly. Whereas the multiphase solute transport modules employ finite element schemes to handle single-species transport in multiphase fluid systems. This document has been produced as a user`s manual. It contains detailed information on the code structure along with instructions for input data preparation and sample input and printed output for selected test problems. Also included are instructions for job set up and simulation restart procedures.

Wu, Y.S.; Huyakorn, P.S.; Panday, S.; Park, N.S.; Kool, J.B. [HydroGeoLogic, Inc., Herndon, VA (United States)

1991-09-01T23:59:59.000Z

99

SiC MOSFET Based Single Phase Active Boost Rectifier with Power Factor Correction for Wireless Power Transfer Applications  

SciTech Connect (OSTI)

Wireless Power Transfer (WPT) technology is a novel research area in the charging technology that bridges the utility and the automotive industries. There are various solutions that are currently being evaluated by several research teams to find the most efficient way to manage the power flow from the grid to the vehicle energy storage system. There are different control parameters that can be utilized to compensate for the change in the impedance due to variable parameters such as battery state-of-charge, coupling factor, and coil misalignment. This paper presents the implementation of an active front-end rectifier on the grid side for power factor control and voltage boost capability for load power regulation. The proposed SiC MOSFET based single phase active front end rectifier with PFC resulted in >97% efficiency at 137mm air-gap and >95% efficiency at 160mm air-gap.

Onar, Omer C [ORNL] [ORNL; Tang, Lixin [ORNL] [ORNL; Chinthavali, Madhu Sudhan [ORNL] [ORNL; Campbell, Steven L [ORNL] [ORNL; Miller (JNJ), John M. [JNJ-Miller PLC] [JNJ-Miller PLC

2014-01-01T23:59:59.000Z

100

Impact of single-particle compressibility on the fluid-solid phase transition for ionic microgel suspensions  

E-Print Network [OSTI]

We study ionic microgel suspensions composed of swollen particles for various single-particle stiffnesses. We measure the osmotic pressure $\\pi$ of these suspensions and show that it is dominated by the contribution of free ions in solution. As this ionic osmotic pressure depends on the volume fraction of the suspension $\\phi$, we can determine $\\phi$ from $\\pi$, even at volume fractions so high that the microgel particles are compressed. We find that the width of the fluid-solid phase coexistence, measured using $\\phi$, is larger than its hard-sphere value for the stiffer microgels that we study and progressively decreases for softer microgels. For sufficiently soft microgels, the suspensions are fluid-like, irrespective of volume fraction. By calculating the dependence on $\\phi$ of the mean volume of a microgel particle, we show that the behavior of the phase-coexistence width correlates with whether or not the microgel particles are compressed at the volume fractions corresponding to fluid-solid coexistence.

M. Pelaez-Fernandez; Anton Souslov; L. A. Lyon; Paul M. Goldbart; A. Fernandez-Nieves

2014-10-17T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Gas-Phase Synthesis of Singly and Multiply Charged Polyoxovanadate Anions Employing Electrospray Ionization and Collision Induced Dissociation  

SciTech Connect (OSTI)

Electrospray ionization mass spectrometry (ESI-MS) combined with in-source fragmentation and tandem mass spectrometry (MS/MS) experiments were used to generate a wide range of multiply charged vanadium oxide cluster anions including VxOyn- and VxOyCln- ions (x = 1 ? 14, y= 2 ? 36, n = 1 ? 3), protonated clusters, and ligand-bound VxOyn- species. These cluster anions were produced by electrospraying a solution of tetradecavanadate, V14O36Cl(L)5 (L= Et4N+, tetraethylammonium), in acetonitrile. Under mild source conditions, ESI-MS generates a distribution of doubly and triply charged VxOyCln- and VxOyCl(L)(n-1)- clusters predominantly containing 14 vanadium atoms. Accurate mass measurement using high-resolution mass spectrometry (m/?m = 60,000 at m/z 410) enabled unambiguous assignment of the elemental composition of the majority of peaks in the ESI-MS spectrum. In addition, high-sensitivity mass spectrometry allowed the charge state of the cluster ions to be assigned based on the separation of the major from the minor isotope of vanadium. In-source fragmentation resulted in facile formation of smaller VxOyCl(1-2)- and VxOy(1-2)- anions. Collision-induced dissociation (CID) experiments enabled systematic study of the gas-phase fragmentation pathways of the cluster anions generated from solution. Surprisingly simple fragmentation patterns were obtained for all singly and doubly charged VxOyCl and VxOy species generated through multiple MS/MS experiments. In contrast, cluster ions originating directly from solution produced comparatively complex CID spectra. These results indicate that low-energy CID results in formation of stable cage-like structures of VxOyCl and VxOy anions. Furthermore, solution-phase synthesis of one precursor cluster combined with gas-phase CID is an efficient approach for the top-down synthesis of a wide range of multiply charged gas-phase metal oxide clusters for subsequent investigations of structure and reactivity.

Al Hasan, Naila M.; Johnson, Grant E.; Laskin, Julia

2013-09-01T23:59:59.000Z

102

Space and phase resolved ion energy and angular distributions in single- and dual-frequency capacitively coupled plasmas  

SciTech Connect (OSTI)

The control of ion energy and angular distributions (IEADs) is critically important for anisotropic etching or deposition in microelectronic fabrication processes. With single frequency capacitively coupled plasmas (CCPs), the narrowing in angle and spread in energy of ions as they cross the sheath are definable functions of frequency, sheath width, and mean free path. With increases in wafer size, single frequency CCPs are finding difficulty in meeting the requirement of simultaneously controlling plasma densities, ion fluxes, and ion energies. Dual-frequency CCPs are being investigated to provide this flexible control. The high frequency (HF) is intended to control the plasma density and ion fluxes, while the ion energies are intended to be controlled by the low frequency (LF). However, recent research has shown that the LF can also influence the magnitude of ion fluxes and that IEADs are determined by both frequencies. Hence, separate control of fluxes and IEADs is complex. In this paper, results from a two-dimensional computational investigation of Ar/O{sub 2} plasma properties in an industrial reactor are discussed. The IEADs are tracked as a function of height above the substrate and phase within the rf cycles from the bulk plasma to the presheath and through the sheath with the goal of providing insights to this complexity. Comparison is made to laser-induced fluorescence experiments. The authors found that the ratios of HF/LF voltage and driving frequency are critical parameters in determining the shape of the IEADs, both during the transit of the ion through the sheath and when ions are incident onto the substrate. To the degree that contributions from the HF can modify plasma density, sheath potential, and sheath thickness, this may provide additional control for the IEADs.

Zhang, Yiting; Kushner, Mark J. [Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Ave., Ann Arbor, Michigan 48109-2122 (United States)] [Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Ave., Ann Arbor, Michigan 48109-2122 (United States); Moore, Nathaniel; Pribyl, Patrick; Gekelman, Walter [Department of Physics, University of California, Los Angeles, California 90095 (United States)] [Department of Physics, University of California, Los Angeles, California 90095 (United States)

2013-11-15T23:59:59.000Z

103

Controlled Vapor Phase Growth of Single Crystalline, Two-Dimensional GaSe Crystals with High Photoresponse  

SciTech Connect (OSTI)

Abstract Compared with their bulk counterparts, atomically thin two-dimensional (2D) crystals exhibit new physical properties, and have the potential to enable next-generation electronic and optoelectronic devices. However, controlled synthesis of large uniform monolayer and multi-layer 2D crystals is still challenging. Here, we report the controlled synthesis of 2D GaSe crystals on SiO2/Si substrates using a vapor phase deposition method. For the first time, uniform, large (up to ~60 m in lateral size), single-crystalline, triangular monolayer GaSe crystals were obtained and their atomic resolution structure were characterized. The size, density, shape, thickness, and uniformity of the 2D GaSe crystals were shown to be controllable by growth duration, growth region, growth temperature, and argon carrier gas flow rate. The theoretical modeling of the electronic structure and Raman spectroscopy demonstrate a direct-to-indirect bandgap transition and progressive confinement-induced bandgap shifts for 2D GaSe crystals. The 2D GaSe crystals show p-type semiconductor characteristics and high photoresponsivity (~1.7 A/W under white light illumination) comparable to exfoliated GaSe nanosheets. These 2D GaSe crystals are potentially useful for next-generation electronic and optoelectronic devices such as photodetectors and field-effect transistors.

Li, Xufan [ORNL; Lin, Ming-Wei [ORNL; Zhang, Huidong [University of Tennessee, Knoxville (UTK); Puretzky, Alexander A [ORNL; Idrobo Tapia, Juan C [ORNL; Ma, Cheng [ORNL; Chi, Miaofang [ORNL; Yoon, Mina [ORNL; Rouleau, Christopher M [ORNL; Kravchenko, Ivan I [ORNL; Geohegan, David B [ORNL; Xiao, Kai [ORNL

2014-01-01T23:59:59.000Z

104

Experimental synchronization of chaos in a large ring of mutually coupled single-transistor oscillators: Phase, amplitude, and clustering effects  

Science Journals Connector (OSTI)

In this paper experimental evidence of multiple synchronization phenomena in a large (n?=?30) ring of chaotic oscillators is presented. Each node consists of an elementary circuit generating spikes of irregular amplitude and comprising one bipolar junction transistor one capacitor two inductors and one biasing resistor. The nodes are mutually coupled to their neighbours via additional variable resistors. As coupling resistance is decreased phase synchronization followed by complete synchronization is observed and onset of synchronization is associated with partial synchronization i.e. emergence of communities (clusters). While component tolerances affect community structure the general synchronization properties are maintained across three prototypes and in numerical simulations. The clusters are destroyed by adding long distance connections with distant notes but are otherwise relatively stable with respect to structural connectivity changes. The study provides evidence that several fundamental synchronization phenomena can be reliably observed in a network of elementary single-transistor oscillators demonstrating their generative potential and opening way to potential applications of this undemanding setup in experimental modelling of the relationship between network structure synchronization and dynamical properties.

2014-01-01T23:59:59.000Z

105

Time of day modulates low-temperature Ca2+ Arabidopsis  

E-Print Network [OSTI]

-induced increases in cytosolic-free calcium ([Ca2Ăľ ]cyt), and regulation of [Ca2Ăľ ]cyt-dependent outputs of the LT: circadian, calcium, cold, guard cell, signalling. Introduction Circadian clocks synchronize plant physiology). Circadian control is believed to derive from several interlocking and autoinhibitory loops of gene

Haseloff, Jim

106

Single phase synthesis of ?-brass (Cu5Zn8) nanoparticles by electric arc discharge method and investigation of their order–disorder transition temperature  

Science Journals Connector (OSTI)

Abstract Single phase ?-brass (Cu5Zn8) nanoparticles were synthesized using the electric arc discharge method. The effect of various arc currents and pressures on the size and phase purity of the Cu–Zn alloy was studied. The arc currents of 200, 300 and 400 A and chamber pressures of 1, 2 and 3 atm of Ar were examined. The samples were characterized using XRD and SEM measurements. The results showed that the spherical nanoparticles of Cu5Zn8 with a mean particle size of 21 nm were produced at a pressure of 1 atm and an arc current of 300 A. Post annealing and quenching of the samples were used to investigate the order disorder phase transformation temperature of Cu5Zn8 in the nanosized form. The XRD analyses showed that the disorder phase starts at 400 °C and completes at 480 °C which is different from the bulk brasses.

Mansoor Farbod; Alireza Mohammadian

2014-01-01T23:59:59.000Z

107

Single-shot visualization of evolving, light-speed structures by multiobject-plane phase-contrast imaging  

Science Journals Connector (OSTI)

We demonstrate a single-shot method of visualizing the evolution of light-speed, laser-generated structures as they propagate over hundreds of Rayleigh lengths (typically...

Li, Zhengyan; Pai, Chih-Hao; Chang, Yen-Yu; Zgadzaj, Rafal; Wang, Xiaoming; Downer, M C

2013-01-01T23:59:59.000Z

108

Lowering of L10 phase transition temperature of FePt thin films by single shot H+ ion exposure using plasma focus device  

Science Journals Connector (OSTI)

FePt thin films are exposed to pulsed energetic H+ ion beam from plasma focus. In irradiated films, the phase transition from the low Ku disordered face-centered-cubic structure to high Ku ordered face-centered-tetragonal phase was achieved at 400 °C with the order parameter S ranging from 0.73 to 0.83, high coercivity of about 5356 kA/m, high negative nucleation field of about 7700 kA/m and high squareness ratio ranging from 0.73 to 0.79. The advantage of using plasma focus device is that it can lower phase transition temperature and significantly enhance the magnetic properties by a pulsed single shot exposure.

Z.Y. Pan; J.J. Lin; T. Zhang; S. Karamat; T.L. Tan; P. Lee; S.V. Springham; R.V. Ramanujan; R.S. Rawat

2009-01-01T23:59:59.000Z

109

Possible phase separation and weak localization in the absence of a charge-density wave in single-phase 1T-VS2  

Science Journals Connector (OSTI)

We report on a systematic study of the structural, magnetic, and transport properties of high-purity 1T-VS2 powder samples prepared under high pressure. The results differ notably from those previously obtained by deintercalating Li from LiVS2. First, no charge-density wave (CDW) is found by transmission electron microscopy down to 94 K, though ab initio phonon calculations unveil a latent CDW instability driven by an acoustic phonon softening at the wave vector qCDW?(0.21,0.21,0) previously reported in deintercalated samples. A further indication of latent lattice instability is given by an anomalous expansion of the V-S bond distance at low temperature. Second, infrared optical absorption and electrical resistivity measurements give evidence of nonmetallic properties, consistent with the observation of no CDW phase. On the other hand, magnetic susceptibility and NMR data suggest the coexistence of localized moments with metallic carriers, in agreement with ab initio band structure calculations. This discrepancy is reconciled by a picture of electron localization induced by disorder or electronic correlations leading to a phase separation of metallic and nonmetallic domains in the nm scale. We conclude that 1T-VS2 is at the verge of a CDW transition and suggest that residual electronic doping in Li deintercalated samples stabilizes a uniform CDW phase with metallic properties.

A. Gauzzi; A. Sellam; G. Rousse; Y. Klein; D. Taverna; P. Giura; M. Calandra; G. Loupias; F. Gozzo; E. Gilioli; F. Bolzoni; G. Allodi; R. De Renzi; G. L. Calestani; P. Roy

2014-06-23T23:59:59.000Z

110

Phase 1 RCRA Facility Investigation and Corrective Measures Study Work Plan for Single Shell Tank Waste Management Areas  

SciTech Connect (OSTI)

This document is the master work plan for the Resource Conservation and Recovery Act of 1976 (RCRA) for single-shell tank (SST) farms at the Hanford Site. Evidence indicates that releases at four of the seven SST waste management areas have impacted.

ROGERS, P.M.

2000-06-01T23:59:59.000Z

111

Contact-mediated cell-assisted cell proliferation in a model eukaryotic single-cell organism: An explanation for the lag phase in shaken cell culture  

Science Journals Connector (OSTI)

In cell culture, when cells are inoculated into fresh media, there can be a period of slow (or lag phase) growth followed by a transition to exponential growth. This period of slow growth is usually attributed to the cells’ adaptation to a new environment. However, we argue that, based on observations of shaken suspension culture of Dictyostelium discoideum, a model single-cell eukaryote, this transition is due to a density effect. Attempts to demonstrate the existence of implicit cell signaling via long-range diffusible messengers (i.e., soluble growth factors) through cell-medium separation and microfluidic flow perturbation experiments produced negative results. This, in turn, led to the development of a signaling model based on direct cell-to-cell contacts. Employing a scaling argument for the collision rate due to fluid shear, we reasonably estimate the crossover density for the transition into the exponential phase and fit the observed growth kinetics.

Carl Franck; Wui Ip; Albert Bae; Nathan Franck; Elijah Bogart; Thanhbinh Thi Le

2008-04-11T23:59:59.000Z

112

COMMIX-1AR/P: A three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems. Volume 2, User`s guide  

SciTech Connect (OSTI)

The COMMIX-1AR/P computer program is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-1A to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a k-{var_epsilon} model for fluid turbulence, and improved numerical techniques. The porous-medium formulation in COMMIX allows the program to be applied to a wide range of problems involving both simple and complex geometrical arrangements. The input preparation and execution procedures are presented for the COMMIX-1AR/P program and several postprocessor programs which produce graphical displays of the calculated results.

Garner, P.L.; Blomquist, R.N.; Gelbard, E.M.

1992-09-01T23:59:59.000Z

113

COMMIX-1AR/P: A three-dimensional transient single-phase computer program for thermal hydraulic analysis of single and multicomponent systems. Volume 3, Programmer`s guide  

SciTech Connect (OSTI)

The COMMIX-LAR/P computer program is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-lA to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a keg model for fluid turbulence, and improved numerical techniques. The porous-medium formulation in COMMIX allows the program to be applied to a wide range of problems involving both simple and complex geometrical arrangements. The internal aspects of the COMMIX-LAR/P program are presented, covering descriptions of subprograms, variables, and files.

Garner, P.L.; Blomquist, R.N.; Gelbard, E.M.

1992-09-01T23:59:59.000Z

114

A comparative study of optical absorption and photocatalytic properties of nanocrystalline single-phase anatase and rutile TiO{sub 2} doped with transition metal cations  

SciTech Connect (OSTI)

The effect of nanocrystalline TiO{sub 2} doping with transition metal cations (Cu{sup 2+}, Fe{sup 3+}, Co{sup 2+}, Cr{sup 3+}) on their optical absorption and photocatalytic properties was investigated. The obtained metal-doped TiO{sub 2} samples were characterized by X-ray diffraction, scanning electron microscopy, and UV-vis absorption spectroscopy. It is shown that doping effect on anatase (A) and rutile (R) properties is quite different, being much stronger and complicated on A than on R. Contrary to doped R, doped A revealed a significant red shift of the absorption edge along with the band gap narrowing. Photocatalytic activity of anatase increases upon doping in the order: AR/Co>R/Cu>R/Fe>R/Cr, indicating the inhibitory effect of impurity cations. This fact correlates with the decrease in the UV absorption of the doped rutile in the region of the Hg-lamp irradiation at 4.88 eV. - Graphical abstract: A red shift of the absorption edge of nanocrystalline single-phase anatase after doping with transition metal cations. Highlights: Black-Right-Pointing-Pointer Single-phase anatase and rutile powders surface-doped with transition metal cations. Black-Right-Pointing-Pointer Absorption edge and band gap of rutile do not change with surface doping. Black-Right-Pointing-Pointer Band gap of surface-doped anatase reduces being the lowest for A/Fe. Black-Right-Pointing-Pointer The surface-doping improves photocatalytic activity of anatase. Black-Right-Pointing-Pointer The surface-doping inhibits photocatalytic activity of rutile.

Kernazhitsky, L., E-mail: kern@iop.kiev.ua [Department of Photoactivity, Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauki 46, Kiev 03650 (Ukraine); Shymanovska, V.; Gavrilko, T.; Naumov, V. [Department of Photoactivity, Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauki 46, Kiev 03650 (Ukraine)] [Department of Photoactivity, Institute of Physics, National Academy of Sciences of Ukraine, Prospect Nauki 46, Kiev 03650 (Ukraine); Kshnyakin, V. [Department of Physics, Sumy State University, Rymsky-Korsakov Str. 2, Sumy 40007 (Ukraine)] [Department of Physics, Sumy State University, Rymsky-Korsakov Str. 2, Sumy 40007 (Ukraine); Khalyavka, T. [Laboratory of Photochemistry of Disperse Materials, Institute for Sorption and Problems of Endoecology, National Academy of Sciences of Ukraine, Gen. Naumov Str. 13, Kiev 03164 (Ukraine)] [Laboratory of Photochemistry of Disperse Materials, Institute for Sorption and Problems of Endoecology, National Academy of Sciences of Ukraine, Gen. Naumov Str. 13, Kiev 03164 (Ukraine)

2013-02-15T23:59:59.000Z

115

Results of Phase I groundwater quality assessment for single-shell tank waste management areas T and TX-TY at the Hanford Site  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) conducted a Phase I, Resource Conservation and Recovery Act of 1976 (RCRA) groundwater quality assessment for the Richland Field Office of the U.S. Department of Energy (DOE-RL) under the requirements of the Federal Facility Compliance Agreement. The purpose of the investigation was to determine if the Single-Shell Tank Waste Management Areas (WMAs) T and TX-TY have impacted groundwater quality. Waste Management Areas T and TX-TY, located in the northern part of the 200 West Area of the Hanford Site, contain the 241-T, 241-TX, and 241-TY tank farms and ancillary waste systems. These two units are regulated under RCRA interim-status regulations (under 40 CFR 265.93) and were placed in assessment groundwater monitoring because of elevated specific conductance in downgradient wells. Anomalous concentrations of technetium-99, chromium, nitrate, iodine-129, and cobalt-60 also were observed in some downgradient wells. Phase I assessment, allowed under 40 CFR 265, provides the owner-operator of a facility with the opportunity to show that the observed contamination has a source other than the regulated unit. For this Phase I assessment, PNNL evaluated available information on groundwater chemistry and past waste management practices in the vicinity of WMAs T and TX-TY. Background contaminant concentrations in the vicinity of WMAs T and TX-TY are the result of several overlapping contaminant plumes resulting from past-practice waste disposal operations. This background has been used as baseline for determining potential WMA impacts on groundwater.

Hodges, F.N.

1998-01-01T23:59:59.000Z

116

Research on high-efficiency, single-junction, monolithic, thin-film amorphous silicon solar cells: Phase II annual subcontract report, 1 January 1985--31 January 1986  

SciTech Connect (OSTI)

This report presents results of the second phase of research on high-efficiency, single-junction, monolithic, thin-film a-Si solar cells. Five glow-discharge deposition systems, including a new in-line, multichamber system, were used to grow both doped and undoped a-Si:H. A large number of silane and disilane gas cylinders were analyzed with a gas chromatography/mass spectroscopy system. Strong correlations were found between the breakdown voltage, the deposition rate, the diffusion length, and the conversion efficiency for varying cathode-anode separations in a DC glow-discharge deposition mode. Tin oxide films were grown by chemical vapor deposition with either tetramethyl tin (TMT) or tin tetrachloride (TTC). The best were grown with TMT, but TTC films had a more controlled texture for light trapping and provided a better contact to the p-layer. The best results were obtained with 7059 glass substrates. Efficiencies as high as 10.86% were obtained in p-i-n cells with superlattice p-layers and as high as 10.74% in cells with both superlattice p- and n-layers. Measurements showed that the boron-doping level in the p-layer can strongly affect transport in the i-layer, which can be minimized by reactive flushing before i-layer deposition. Stability of a-Si:H cells is improved by light doping. 51 refs., 64 figs., 21 tabs.

Carlson, D.E.; Ayra, R.R.; Bennett, M.S.; Catalano, A.; D'Aiello, R.V.; Dickson, C.R.; McVeigh, J.; Newton, J.; O'Dowd, J.; Oswald, R.S.; Rajan, K.

1988-09-01T23:59:59.000Z

117

Advanced Power Electronic Interfaces for Distributed Energy Systems, Part 2: Modeling, Development, and Experimental Evaluation of Advanced Control Functions for Single-Phase Utility-Connected Inverter  

SciTech Connect (OSTI)

Integrating renewable energy and distributed generations into the Smart Grid architecture requires power electronic (PE) for energy conversion. The key to reaching successful Smart Grid implementation is to develop interoperable, intelligent, and advanced PE technology that improves and accelerates the use of distributed energy resource systems. This report describes the simulation, design, and testing of a single-phase DC-to-AC inverter developed to operate in both islanded and utility-connected mode. It provides results on both the simulations and the experiments conducted, demonstrating the ability of the inverter to provide advanced control functions such as power flow and VAR/voltage regulation. This report also analyzes two different techniques used for digital signal processor (DSP) code generation. Initially, the DSP code was written in C programming language using Texas Instrument's Code Composer Studio. In a later stage of the research, the Simulink DSP toolbox was used to self-generate code for the DSP. The successful tests using Simulink self-generated DSP codes show promise for fast prototyping of PE controls.

Chakraborty, S.; Kroposki, B.; Kramer, W.

2008-11-01T23:59:59.000Z

118

Online estimation of wax deposition thickness in single-phase sub-sea pipelines based on acoustic chemometrics: A feasibility study  

Science Journals Connector (OSTI)

Wax deposition in sub-sea oil producing pipelines is a concern to the oil producing companies. The deposition of wax in pipelines can cause serious economic implications if not monitored and controlled. Several researchers have developed models and investigated the deposition of wax in crude oil pipelines. As of today, there is no off the shelf instrument available for reliable online estimation of the wax deposition thickness in sub-sea pipelines. Acoustic chemometrics was applied to investigate the potential for online estimation of wax deposition thickness in sub-sea pipelines. This feasibility study was carried out as a so called piggy back on experiments performed at Statoil research centre in Porsgrunn, Norway with real crude oil or waxy gas condensate. The first investigations focused on the repeatability of the acoustic chemometric technique followed by online prediction of the wax deposition thickness in a single-phase oil flow pipeline. A partial least squares regression model was calibrated and validated with a totally independent data set. The calibrated model had a root mean squared error of prediction of 0.28 mm with a final wax deposition thickness of 3.36 mm, a slope of 0.91 and R2 of 0.83 which were satisfactory results. The effect of varying oil flow rates on the wax deposition thickness was also investigated. The preliminary results showed the need for further investigations based on a robust experimental design and sample pre-processing. The general conclusion that can be drawn from this feasibility study was that the potential of adapting the acoustic chemometric technique for online estimation of the wax deposition thickness exist and must be further investigated.

Maths Halstensen; Benjamin Kaku Arvoh; Lene Amundsen; Rainer Hoffmann

2013-01-01T23:59:59.000Z

119

Porosity, single-phase permeability, and capillary pressure data from preliminary laboratory experiments on selected samples from Marker Bed 139 at the Waste Isolation Pilot Plant. Volume 1 of 3: Main report, appendix A  

SciTech Connect (OSTI)

Three groups of core samples from Marker Bed 139 of the Salado Formation at the Waste Isolation Pilot Plant (WIPP) were analyzed to provide data to support the development of numerical models used to predict the long-term hydrologic and structural response of the WIPP repository. These laboratory experiments, part of the FY93 Experimental Scoping Activities of the Salado Two-Phase Flow Laboratory Program, were designed to (1) generate WIPP-specific porosity and single-phase permeability data, (2) provide information needed to design and implement planned tests to measure two-phase flow properties, including threshold pressure, capillary pressure, and relative permeability, and (3) evaluate the suitability of using analog correlations for the Salado Formation to assess the long-term performance of the WIPP. This report contains a description of the boreholes core samples, the core preparation techniques used, sample sizes, testing procedures, test conditions, and results of porosity and single-phase permeability tests performed at three laboratories: TerraTek, Inc. (Salt Lake City, UT), RE/SPEC, Inc. (Rapid City, SD), and Core Laboratories-Special Core Analysis Laboratory (Carrollton, TX) for Rock Physics Associates. In addition, this report contains the only WIPP-specific two-phase-flow capillary-pressure data for twelve core samples. The WIPP-specific data generated in this laboratory study and in WIPP field-test programs and information from suitable analogs will form the basis for specification of single- and two-phase flow parameters for anhydrite markers beds for WIPP performance assessment calculations.

Howarth, S.M.; Christian-Frear, T.

1997-08-01T23:59:59.000Z

120

Simultaneous Suppression of Third-Order Dispersion and Sideband Instability in Single-Channel Optical Fiber Transmission by Midway Optical Phase Conjugation Employing Higher Order Dispersion Management  

Science Journals Connector (OSTI)

In optical phase conjugation (OPC) systems, the third-order dispersion (TOD) of optical fibers and the nonlinear resonance at well-defined signal sideband frequencies called sideband...

Kaewplung, Pasu; Angkaew, Tuptim; Kikuchi, Kazuro

2003-01-01T23:59:59.000Z

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


121

A Phase 1 Escalating Single-Dose and Weekly Fixed-Dose Study of Cetuximab: Pharmacokinetic and Pharmacodynamic Rationale for Dosing  

Science Journals Connector (OSTI)

...the Institutional Review Boards at the participating...institutions. Treatment plan This phase 1 pharmacokinetic...independent methods. Standard histologic analysis...level to ease data mining, data analysis...for their critical review of the manuscript...

Paula M. Fracasso; Howard Burris III; Matthew A. Arquette; Ramaswamy Govindan; Feng Gao; Lisa P. Wright; Sherry A. Goodner; F. Anthony Greco; Suzanne F. Jones; Noel Willcut; Catherine Chodkiewicz; Amit Pathak; Gregory M. Springett; George R. Simon; Daniel M. Sullivan; Raphaël Marcelpoil; Shelley D. Mayfield; David Mauro; and Christopher R. Garrett

2007-02-01T23:59:59.000Z

122

NMR relaxation study of the phase transitions and relaxation mechanisms of the alums MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) single crystals  

SciTech Connect (OSTI)

The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) single crystals have been investigated. The phase transition temperatures, NMR spectra, and the spin-lattice relaxation times T{sub 1} of the {sup 87}Rb and {sup 133}Cs nuclei in the two crystals were determined using DSC and FT NMR spectroscopy. The resonance lines and relaxation times of the {sup 87}Rb and {sup 133}Cs nuclei undergo significant changes at the phase transition temperatures. The sudden changes in the splitting of the Rb and Cs resonance lines are attributed to changes in the local symmetry of their sites, and the changes in the temperature dependences of T{sub 1} are related to variations in the symmetry of the octahedra of water molecules surrounding Rb{sup +} and Cs{sup +}. We also compared these {sup 87}Rb and {sup 133}Cs NMR results with those obtained for the trivalent cations Cr and Al in MCr(SO{sub 4}){sub 2}.12H{sub 2}O and MAl(SO{sub 4}){sub 2}.12H{sub 2}O crystals. - Graphical Abstract: The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb, Cs, and NH{sub 4}) single crystals have been investigated. Highlights: > The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) crystals {yields} The NMR spectra and the spin-lattice relaxation times T{sub 1} of the {sup 87}Rb and {sup 133}Cs nuclei in the two crystals {yields} The variations in the symmetry of the octahedra of water molecules surrounding Rb{sup +} and Cs{sup +}.

Lim, Ae Ran, E-mail: aeranlim@hanmail.net [Department of Science Education, Jeonju University, Jeonju 560-759 (Korea, Republic of); Paik, Younkee [Solid State Analysis Team, Korea Basic Science Institute, Daegu 702-701 (Korea, Republic of); Lim, Kye-Young [Department of Energy and Electrical Engineering, Korea Polytechnic University, Siheung 429-793 (Korea, Republic of)

2011-06-15T23:59:59.000Z

123

Incentive Mechanisms for Internet Congestion Management: Fixed-Budget Rebate Versus Time-of-Day Pricing  

E-Print Network [OSTI]

Mobile data traffic has been steadily rising in the past years. This has generated a significant interest in the deployment of incentive mechanisms to reduce peak-time congestion. Typically, the design of these mechanisms ...

Loiseau, Patrick

124

Single-crystal studies of the Chevrel-phase superconductor La{sub x}Mo{sub 6}Se{sub 8}. 2: Physical and superconducting properties  

SciTech Connect (OSTI)

Single crystals of La{sub x}Mo{sub 6}Se{sub 8} have been grown and some of their magnetic, transport, and superconducting properties studied. The electrical resistivity is characterized by its high value at room temperature, its low residual resistivity ratio, and a pronounced negative curvature at high temperatures. Comparison with the isostructural compounds Mo{sub 3}Se{sub 4} (Mo{sub 6}Se{sub 8}) and LaMo{sub 6}S{sub 8} shows that this behavior is due to structural as well as to extrinsic features (e.g., brittleness due to weak intercluster bondings). The position of the Fermi level near a peak of the density of states plays an important role in the normal-state physical properties, fixing the functional forms of both resistivity and magnetic susceptibility. The superconducting state is mainly characterized by a strong lanthanum concentration dependence of the critical temperature {Tc}, by quite definite granular effects, and by a very high critical field (H{sub c2}(0) {approximately} 55 T). The intragrain critical current density, as estimated by magnetic measurements, is relatively high (4 {times} 10{sup 4} A/cm{sup 2} at zero field and 1.7 K), three times larger than the one obtained for the void compound Mo{sub 3}Se{sub 4}. The fact is due to a higher density of pinning centers in the ternary compound because of microstructural features such as microcracks or crystal defects caused by the extreme brittleness of the crystals.

Pena, O.; Le Berre, F.; Padiou, J.; Marchand, T. [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire] [Univ. de Rennes I (France). Chimie du Solide et Inorganique Moleculaire; Horyn, R.; Wojakowski, A. [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research] [Polish Academy of Sciences, Wroclaw (Poland). Inst. of Low Temperature and Structure Research

1998-03-01T23:59:59.000Z

125

Toward single-cycle optical pulses  

E-Print Network [OSTI]

Single-cycle optical pulses, the never-before-achieved regime, have a great potential for attosecond science and phase-sensitive nonlinear optics. To achieve single-cycle optical pulses by active synchronization, three ...

Kim, Jung-Won, 1976-

2004-01-01T23:59:59.000Z

126

Village of Stratford, Wisconsin (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Stratford Stratford Place Wisconsin Utility Id 18200 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Athletic Field Lighting Lighting General Service- Single-Phase Commercial General Service- Single-Phase- Time-of-Day- Peak: 7am-7pm Commercial General Service- Single-Phase- Time-of-Day- Peak: 8am-8pm Commercial General Service- Single-Phase- Time-of-Day- Peak: 9am-9pm Commercial General Service- Three-Phase Commercial General Service- Three-Phase- Time-of-Day- Peak: 7am-7pm Commercial

127

General single phase wellbore flow model  

SciTech Connect (OSTI)

A general wellbore flow model, which incorporates not only frictional, accelerational and gravitational pressure drops, but also the pressure drop caused by inflow, is presented in this report. The new wellbore model is readily applicable to any wellbore perforation patterns and well completions, and can be easily incorporated in reservoir simulators or analytical reservoir inflow models. Three dimensionless numbers, the accelerational to frictional pressure gradient ratio R{sub af}, the gravitational to frictional pressure gradient ratio R{sub gf}, and the inflow-directional to accelerational pressure gradient ratio R{sub da}, have been introduced to quantitatively describe the relative importance of different pressure gradient components. For fluid flow in a production well, it is expected that there may exist up to three different regions of the wellbore: the laminar flow region, the partially-developed turbulent flow region, and the fully-developed turbulent flow region. The laminar flow region is located near the well toe, the partially-turbulent flow region lies in the middle of the wellbore, while the fully-developed turbulent flow region is at the downstream end or the heel of the wellbore. Length of each region depends on fluid properties, wellbore geometry and flow rate. As the distance from the well toe increases, flow rate in the wellbore increases and the ratios R{sub af} and R{sub da} decrease. Consequently accelerational and inflow-directional pressure drops have the greatest impact in the toe region of the wellbore. Near the well heel the local wellbore flow rate becomes large and close to the total well production rate, here R{sub af} and R{sub da} are small, therefore, both the accelerational and inflow-directional pressure drops can be neglected.

Ouyang, Liang-Biao; Arbabi, S.; Aziz, K.

1997-02-05T23:59:59.000Z

128

Diffraction Phase Cytometry: blood on a CD-ROM  

Science Journals Connector (OSTI)

We demonstrate Diffraction Phase Cytometry (DPC) as a single shot, full-field, high throughput quantitative phase imaging modality, dedicated to analyzing whole blood smears. Utilizing...

Mir, Mustafa; Wang, Zhuo; Tangella, Krishnarao; Popescu, Gabriel

2009-01-01T23:59:59.000Z

129

Temperature-induced and electric-field-induced phase transitions in rhombohedral Pb(In1/2Nb1/2)O3?Pb(Mg1/3Nb2/3)O3?PbTiO3 ternary single crystals  

Science Journals Connector (OSTI)

Temperature and electric field effects on rhombohedral (R) ternary Pb(In1/2Nb1/2)O3?Pb(Mg1/3Nb2/3)O3?PbTiO3 (PIN-PMN-PT) ferroelectric single crystals were comprehensively studied by x-ray diffraction. We have focused on how the individual phase transitions as well as the phase transition sequences depend on thermal and electrical history. Electric field-temperature phase diagrams have been constructed under [001] field-cooling and field-heating conditions. As happens to the R phase of binary PMN-PT crystals [H. Cao, J. F. Li, D. Viehland, and G. Y. Xu, Phys. Rev. B 73, 184110 (2006)], the R phase of the zero-field-cooled (ZFC) state is replaced by a monoclinic A (M) phase in the field-cooled (FC) diagram. In particular, reciprocal-space mesh scans demonstrated that the M phase was stable for crystals poled along the [001] crystallographic direction rather than the initial R phase of the ZFC state. Furthermore, an E-field-induced phase transformational sequence of R?M? tetragonal (T) was observed at constant temperature, revealing a gradual increase in the c lattice parameter. These findings demonstrate that the ternary PIN-PMN-PT crystals exhibit common phase transition features with binary PMN-PT and Pb(Zn1/3Nb2/3)O3?PbTiO3 (PZN-PT) ones for compositions in the low PT side of the morphotropic phase boundary.

Yaojin Wang (???); Zhiguang Wang; Wenwei Ge; Chengtao Luo; Jiefang Li; D. Viehland; Jianwei Chen; Haosu Luo

2014-10-23T23:59:59.000Z

130

Phase five  

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

Phase five Phase five 1663 Los Alamos science and technology magazine Latest Issue:November 2013 All Issues » submit Phase five Los Alamos physicists have conclusively demonstrated the existence of a new phase of matter. November 25, 2013 Phase five Scientists still have more to learn about the exotic physics of specialty materials. What makes the cuprates special? How about a new phase of matter. Ceramic metals known as cuprates have mystified physicists for decades. They exhibit a variety of distinct phases of matter, each with its own specific properties, including a phase bearing an exotic type of magnetism, a high-temperature superconducting phase, an ordinary metal phase, a poorly understood and weird metallic phase simply called a strange metal, and an equally poorly understood metallic phase known as the pseudogap. The

131

PHONON DISPERSION CURVES OF ORDERED PHASES OF T.B.B.A. Abstract. --The lattice dynamics of a deuterated single crystal of T.B.B.A. have been measured  

E-Print Network [OSTI]

of a deuterated single crystal of T.B.B.A. have been measured by mean of inelastic neutron scattering of the molecules. Previous neutron inelastic scattering measurements have been done on non-deuterated single of a melting of the terminal aliphatic chains. So neutron coherent inelastic scattering measure- ments have

Boyer, Edmond

132

Germination of Single Bacterial Spores  

Science Journals Connector (OSTI)

...i--: - 1.-- I tI - I -- VOL.98,1969SINGLE-SPORE GERMINATION 11 I- il4 ZIM ............. NPR w dFIG. 3. Time-lapse phase-contrast micrographs of a germinating spore of B. cereus T. Each frame represents the change in...

Tadayo Hashimoto; W. R. Frieben; S. F. Conti

1969-06-01T23:59:59.000Z

133

3 - Thermodynamics and Phase Diagrams  

Science Journals Connector (OSTI)

Abstract Many types of phase diagram sections involving temperature, composition, pressure, chemical potentials, partial pressures, volume and enthalpy as axis variables or constants are described for binary, ternary and multicomponent systems. The theme is the relationship between thermodynamics and phase diagrams. A review of the fundamentals of thermodynamics as required for the interpretation and calculation of phase diagrams is presented. One set of general geometrical rules which governs all types of single-valued phase diagram sections is derived. The computer calculation of phase diagrams from large critically assessed databases of model parameters is discussed.

Arthur D. Pelton

2014-01-01T23:59:59.000Z

134

Slinger Utilities | Open Energy Information  

Open Energy Info (EERE)

Slinger Utilities Slinger Utilities Jump to: navigation, search Name Slinger Utilities Place Wisconsin Utility Id 17324 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service- Single-Phase Commercial General Service- Single-Phase- Time-of-Day Commercial General Service- Three-Phase Commercial General Service- Three-Phase- Time-of-Day Commercial Industrial Power- Time-of-Day Industrial Large Power- Time-of-Day Commercial Ornamental Street Lighting- 150W HPS Lighting Overhead Street Lighting- 150W HPS Lighting

135

Single-molecule orientation measurements with a quadrated pupil  

Science Journals Connector (OSTI)

This Letter presents a means of measuring the dipole orientation of a fluorescent, orientationally fixed single molecule, which uses a specially designed phase mask, termed a...

Backer, Adam S; Backlund, Mikael P; Lew, Matthew D; Moerner, W E

2013-01-01T23:59:59.000Z

136

phase coherence  

Science Journals Connector (OSTI)

The state in which two signals, such as electronic or optical signals, maintain (a) a fixed phase relationship with each other or (b) a fixed phase relationship with a third signal that can serve as a referenc...

2001-01-01T23:59:59.000Z

137

Phase behavior of polymers and monomers  

E-Print Network [OSTI]

perspective. Objective The objective of this study is to investigate the phase behavior of monomer- solvent and copolymer-solvent mixtures at elevated pressures. Supercritical ethylene will be the solvent used throughout the experiment to simulate... phase region within the reactor. The transition of the polymers from a single phase solution in the ethylene supercritical fluid solvent into two phases is referred to as the "cloud point. " Phase diagrams produced from the pressure and temperature...

Purifoy, Jonathan Patrick

1998-01-01T23:59:59.000Z

138

Heralded single photon absorption by a single atom  

E-Print Network [OSTI]

The emission and absorption of single photons by single atomic particles is a fundamental limit of matter-light interaction, manifesting its quantum mechanical nature. At the same time, as a controlled process it is a key enabling tool for quantum technologies, such as quantum optical information technology [1, 2] and quantum metrology [3, 4, 5, 6]. Controlling both emission and absorption will allow implementing quantum networking scenarios [1, 7, 8, 9], where photonic communication of quantum information is interfaced with its local processing in atoms. In studies of single-photon emission, recent progress includes control of the shape, bandwidth, frequency, and polarization of single-photon sources [10, 11, 12, 13, 14, 15, 16, 17], and the demonstration of atom-photon entanglement [18, 19, 20]. Controlled absorption of a single photon by a single atom is much less investigated; proposals exist but only very preliminary steps have been taken experimentally such as detecting the attenuation and phase shift of a weak laser beam by a single atom [21, 22], and designing an optical system that covers a large fraction of the full solid angle [23, 24, 25]. Here we report the interaction of single heralded photons with a single trapped atom. We find strong correlations of the detection of a heralding photon with a change in the quantum state of the atom marking absorption of the quantum-correlated heralded photon. In coupling a single absorber with a quantum light source, our experiment demonstrates previously unexplored matter-light interaction, while opening up new avenues towards photon-atom entanglement conversion in quantum technology.

Nicolas Piro; Felix Rohde; Carsten Schuck; Marc Almendros; Jan Huwer; Joyee Ghosh; Albrecht Haase; Markus Hennrich; Francois Dubin; Jürgen Eschner

2010-04-23T23:59:59.000Z

139

Roles of chemically inequivalent N(CH3)4 ions in phase transition temperatures in [N(CH3)4]2CoCl4 by single-crystal NMR and MAS NMR  

Science Journals Connector (OSTI)

Abstract The temperature dependences of the 1H and 13C spin–lattice relaxation time in the laboratory frame, T1, and in the rotating frame, T1?, in [N(CH3)4]2CoCl4 were measured by static nuclear magnetic resonance (NMR) and magic angle spinning (MAS) NMR. In the ferroelastic phase, 1H T1? underwent molecular motion according to the Bloembergen–Purcell–Pound theory. Two inequivalent ions, a-N(CH3)4 and b-N(CH3)4, were identified by 13C cross polarization (CP)/MAS NMR. On the basis of the 13C NMR results, the existence of two chemically inequivalent a-N(CH3)4 and b-N(CH3)4 ions in the ferroelectric phase and the existence of the ferroelastic twin structure of the N(CH3)4 ions in the ferroelastic phase were discussed.

Ae Ran Lim

2014-01-01T23:59:59.000Z

140

Variation in plasma cholinesterase activity in the clay-colored robin (Turdus grayi) in relation to time of day, season,  

E-Print Network [OSTI]

) and with weight (Rattner and Fairbrother 1991; Cordi et al. 1997). Diurnal variation of ChE activity also occurs

Mora, Miguel A.

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


141

Single-Use Recycling  

Science Journals Connector (OSTI)

Single-use recycling is specially used oil treatment, generating recycled product for a single finite reuse.

2014-01-01T23:59:59.000Z

142

Magnetic-resonance and thermophysical studies of the magnetic phase diagram for a GdFe{sub 2.1}Ga{sub 0.9}(BO{sub 3}){sub 4} single crystal  

SciTech Connect (OSTI)

The antiferromagnetic resonance, heat capacity, magnetic properties, and magnetic phase diagram of a GdFe{sub 3}(BO{sub 3}){sub 4} crystal in which some of the iron ions were substituted by diamagnetic gallium ions have been investigated. It has been found that the Neel temperature upon diamagnetic substitution decreased to 17 K compared to 38 K in the unsubstituted crystal. The effective exchange and anisotropy fields for GdFe{sub 2.1}Ga{sub 0.9}(BO{sub 3}){sub 4} have been estimated from the field dependences of magnetization and resonance measurements. The magnetic phase diagram of the crystal has been constructed from magnetic and resonance measurements. In GdFe{sub 2.1}Ga{sub 0.9}(BO{sub 3}){sub 4}, there is no spontaneous reorientation and, in the absence of a magnetic field, the crystal remains an easy-axis one in the entire domain of magnetic ordering. The critical field of the reorientation transition to an induced easy-plane state in a magnetic field along the trigonal axis has been found to increase compared to that in the unsubstituted crystal.

Pankrats, A. I.; Petrakovskii, G. A.; Tugarinov, V. I., E-mail: vit@iph.krasn.ru; Kartashev, A. V.; Temerov, V. L. [Russian Academy of Science, Siberian Branch, Kirensky Institute of Physics (Russian Federation)

2011-09-15T23:59:59.000Z

143

Novel 3-Phase Inductive Fault Current Limiter  

Science Journals Connector (OSTI)

The paper describes the inductive three-phase fault current limiter. In this work I examine the novel arrangements of the perfect closed superconducting loop made of HTS wire. I applied one iron core with 3 limbs and special loops for uniform temperature of the superconducting wire. In this work I present the results of my experiments with this device. I present the static and dynamic measured results of this solution. It has got several advantages e. g. fast switching and less fault power for high-power electric machines. The advantage of the equipment is that in the case of single-phase short circuit the current will decrease in all the three phases. This can be an appropriate solution for high power machines. For example, in the case of high-power electric motor if there is a single-phase breaking or a single phase short circuit, we can decrease the current in the three phases.

Janos Kosa

2012-01-01T23:59:59.000Z

144

Spectroscopic Studies of the Phase Transition in Ammonia Borane...  

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

Studies of the Phase Transition in Ammonia Borane: Raman spectroscopy of single crystal NH3BH3 as a function of Spectroscopic Studies of the Phase Transition in Ammonia Borane:...

145

Glauber coherence of single-electron sources  

Science Journals Connector (OSTI)

Recently demonstrated solid-state single-electron sources generate different quantum states depending on their operation condition. For adiabatic and nonadiabatic sources, we determine the Glauber correlation function in terms of the Floquet scattering matrix of the source. The correlation function provides full information on the shape of the state and on its time-dependent amplitude and phase. The coherence properties of single-electron states are therefore essential for the production of quantum multiparticle states.

G. Haack; M. Moskalets; M. Büttiker

2013-05-17T23:59:59.000Z

146

Thermophysical properties of coexistent phases of plutonium  

SciTech Connect (OSTI)

Plutonium is the element with the greatest number of allotropic phases. Thermally induced transformations between these phases are typically characterized by thermal hysteresis and incomplete phase reversion. With Ga substitutal in the lattice, low symmetry phases are replaced by a higher symmetry phase. However, the low temperature Martensitic phase transformation ({delta} {yields} {alpha}{prime}) in Ga stabilized {delta}-phase Pu is characterized by a region of thermal hysteresis which can reach 200 C in extent. These regions of thermal hysteresis offer a unique opportunity to study thermodynamics in inhomogeneous systems of coexistent phases. The results of thermophysical properties measured for samples of inhomogeneous unalloyed and Ga alloyed Pu will be discussed and compared with similar measurements of their single phase constituents.

Freibert, Franz J [Los Alamos National Laboratory; Mitchell, Jeremy N [Los Alamos National Laboratory; Saleh, Tarik A [Los Alamos National Laboratory; Schwartz, Dan S [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

147

Identifying the Bose glass phase  

E-Print Network [OSTI]

Introducing disorder into the Bose-Hubbard model at integer fillings leads to a Bose glass phase, along with the Mott insulator and superfluid phases. We suggest a new order parameter: the determinant of the one body density matrix, which is nonzero only within the Mott-insulator phase. Alongside the superfluid fraction, it is then possible to distinguish the three phases. The Bose glass phase is the only phase which has vanishing determinant and superfluid fraction. The vanishing of the determinant in the Bose glass phase occurs due to the partial fragmentation of the condensate into localized fragments, each with zero superfluid response, which implies the presence of unoccupied sites and hence the presence of lines of zeros in the one body density matrix. In the superfluid phase, the determinant vanish for another reason - due to the macroscopic occupation of a single particle state. Finally, we suggest the enhancement of the three body decay rate in the Bose glass phase, as an experimental indicator for the presence of localized fragments.

R. Pugatch; N. Bar-gill; N. Katz; E. Rowen; N. Davidson

2006-07-28T23:59:59.000Z

148

Two-phase flow studies  

SciTech Connect (OSTI)

The two-phase flow program is directed at understanding the hydrodynamics of two-phase flows. The two-phase flow regime is characterized by a series of flow patterns that are designated as bubble, slug, churn, and annular flow. Churn flow has received very little scientific attention. This lack of attention cannot be justified because calculations predict that the churn flow pattern will exist over a substantial portion of the two-phase flow zone in producing geothermal wells. The University of Houston is experimentally investigating the dynamics of churn flow and is measuring the holdup over the full range of flow space for which churn flow exists. These experiments are being conducted in an air/water vertical two-phase flow loop. Brown University has constructed and is operating a unique two-phase flow research facility specifically designed to address flow problems of relevance to the geothermal industry. An important feature of the facility is that it is dedicated to two-phase flow of a single substance (including evaporation and condensation) as opposed to the case of a two-component two-phase flow. This facility can be operated with horizontal or vertical test sections of constant diameter or with step changes in diameter to simulate a geothermal well profile.

Hanold, R.J.

1983-12-01T23:59:59.000Z

149

Phase II Final Report  

SciTech Connect (OSTI)

The SkyTrough DSP will advance the state-of-the-art in parabolic troughs for utility applications, with a larger aperture, higher operating temperature, and lower cost. The goal of this project was to develop a parabolic trough collector that enables solar electricity generation in the 2020 marketplace for a 216MWe nameplate baseload power plant. This plant requires an LCOE of 9˘/kWhe, given a capacity factor of 75%, a fossil fuel limit of 15%, a fossil fuel cost of $6.75/MMBtu, $25.00/kWht thermal storage cost, and a domestic installation corresponding to Daggett, CA. The result of our optimization was a trough design of larger aperture and operating temperature than has been fielded in large, utility scale parabolic trough applications: 7.6m width x 150m SCA length (1,118m2 aperture), with four 90mm diameter × 4.7m receivers per mirror module and an operating temperature of 500°C. The results from physical modeling in the System Advisory Model indicate that, for a capacity factor of 75%: The LCOE will be 8.87˘/kWhe. SkyFuel examined the design of almost every parabolic trough component from a perspective of load and performance at aperture areas from 500 to 2,900m2. Aperture-dependent design was combined with fixed quotations for similar parts from the commercialized SkyTrough product, and established an installed cost of $130/m2 in 2020. This project was conducted in two phases. Phase I was a preliminary design, culminating in an optimum trough size and further improvement of an advanced polymeric reflective material. This phase was completed in October of 2011. Phase II has been the detailed engineering design and component testing, which culminated in the fabrication and testing of a single mirror module. Phase II is complete, and this document presents a summary of the comprehensive work.

Schuknecht, Nate [Project Manager; White, David [Principle Investigator; Hoste, Graeme [Research Engineer

2014-09-11T23:59:59.000Z

150

Environmental Effects on the Geometric Phase  

E-Print Network [OSTI]

The behavior of the geometric phase gained by a single spin-1/2 nucleus immersed into a thermal or a squeezed environment is investigated. Both the time dependence of the phase and its value at infinity are examined against several physical parameters. It is observed that for some intermediate ranges of the temperature and the coupling strength, the presence of squeezing enhances the geometric phase.

A. C. Günhan; S. Turgut; N. K. Pak

2009-12-25T23:59:59.000Z

151

Single-Molecule Detection  

Science Journals Connector (OSTI)

Detection of single molecules represents the ultimate level of sensitivity and ... background, fluorescence is one obvious choice for single-molecule detection (SMD). However, SMD using ... first report on SMD us...

2006-01-01T23:59:59.000Z

152

Electro-Optic Modulation of Single Photons  

E-Print Network [OSTI]

We use the Stokes photon of a biphoton pair to set the time origin for electro-optic modulation of the wave function of the anti-Stokes photon thereby allowing arbitrary phase and amplitude modulation. We demonstrate conditional single-photon wave functions composed of several pulses, or instead, having gaussian or exponential shapes.

Pavel Kolchin; Chinmay Belthangady; Shengwang Du; G. Y. Yin; S. E. Harris

2008-08-02T23:59:59.000Z

153

mathematics single cycle  

E-Print Network [OSTI]

47 mathematics education single cycle master's study programme #12;48 single cycle master's study program in Mathematics Education #12;49 single cycle master's study program in Mathematics Education MATHEMATICS EDUCATION The program is in tune with the principles of the Bologna Declaration. · Academic title

Â?umer, Slobodan

154

Algoma Utility Comm | Open Energy Information  

Open Energy Info (EERE)

Algoma Utility Comm Algoma Utility Comm Jump to: navigation, search Name Algoma Utility Comm Place Wisconsin Utility Id 307 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Controlled Interdepartmental Service Commercial Customer Owner Generation Systems (Greater than 20kW) Industrial General Service - Optional Time-of-Day Single Phase less than 100kW 7am-7pm Industrial General Service - Optional Time-of-Day Single Phase less than 100kW 9am-9pm Industrial General Service - Optional Time-of-Day Single Phase less than 100kW 8am-8pm

155

Chiral tunneling in single and bilayer graphene  

E-Print Network [OSTI]

We review chiral (Klein) tunneling in single-layer and bilayer graphene and present its semiclassical theory, including the Berry phase and the Maslov index. Peculiarities of the chiral tunneling are naturally explained in terms of classical phase space. In a one-dimensional geometry we reduced the original Dirac equation, describing the dynamics of charge carriers in the single layer graphene, to an effective Schr\\"odinger equation with a complex potential. This allowed us to study tunneling in details and obtain analytic formulas. Our predictions are compared with numerical results. We have also demonstrated that, for the case of asymmetric n-p-n junction in single layer graphene, there is total transmission for normal incidence only, side resonances are suppressed.

T. Tudorovskiy; K. J. A. Reijnders; M. I. Katsnelson

2011-06-15T23:59:59.000Z

156

Finite Element Analysis of Three-Phase Piezoelectric Nanocomposites  

E-Print Network [OSTI]

on performance. The nanocomposite consisted of a polyimide matrix, beta-CN APB/ODPA, enhanced with single wall carbon nanotubes and PZT-5A particles. The polyimide and nan- otube phases were modeled as a single homogenized phase. This results in a two...

Maxwell, Kevin S.

2010-10-12T23:59:59.000Z

157

City of Shullsburg, Wisconsin (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Shullsburg, Wisconsin (Utility Company) Shullsburg, Wisconsin (Utility Company) Jump to: navigation, search Name City of Shullsburg Place Wisconsin Utility Id 17130 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service- Single-Phase Commercial General Service- Single-Phase- Time-of-Day Commercial General Service- Three-Phase Commercial General Service- Three-Phase- Time-of-Day Commercial Large Power- Time-of-Day Commercial Ornamental Lighting- 250W HPS Lighting Ornamental Lighting- 70W HPS Lighting Residential Residential

158

Numerical analysis of thermal-hydrological conditions in the single heater test at Yucca Mountain  

E-Print Network [OSTI]

Single Heater Test at Yucca Mountain, LBNL-39789, E.O. Law­Single Heater Test at Yucca Mountain Jens T. Birkholzer andwaste repository at Yucca Mountain. The heating phase of the

Birkholzer, Jens T.; Tsang, Yvonne W.

1998-01-01T23:59:59.000Z

159

SINGLE PHASE FLOW IN PARTIALLY FISSURED MEDIA J ...  

E-Print Network [OSTI]

of recovery in the initial stages of reservoir production in fractured media often ..... jYf j. jY j. @ f;0. @t. (x; t) r x ( f r x f;0) = qmf (x; t); x 2 ;. t 2 I;. (2.8). qmf (x; t) = 1.

160

Modeling wax thickness in single-phase turbulent flow.  

E-Print Network [OSTI]

?? Oil and gas transport is today a vital part of the industry. Oil cooled during transport in pipelines may precipitate paraffin wax. Precipitated wax… (more)

Botne, Kjetil Kandal

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Single phase flow visualization using Digital Pulsed Laser Velocimetry  

E-Print Network [OSTI]

Implementation . VII. 4 The Decompression Pmgram 53 53 55 58 VIII. THE FIND-SPOTS AND FIND-SPOTS-CMP PROGRAMS VIII. 1 Description of the Code VHI. 2 Find-Spots Algorithm VIII. 3 Find-Spots-CMP Algorithm 60 61 65 IX, THE TRACK-PARTICLES PROGRAM . . 70..., RESULTS TABLE OF CONTENTS (CONTINUED) PAGE X. l Results 95 XI. CONCLUSIONS 103 XL I Conclusions. XL2 Recommendations . 103 104 REFERENCES. . . . . 105 APPENDIX A. MULTIPLE FRAME IMAGE CAPTURE SOURCE CODE . . 108 APPENDIX B. PICTURES OF PARTICLE...

Hild, Robert David

2012-06-07T23:59:59.000Z

162

Formation of single-phase BaO nanoclusters. | EMSL  

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

Instruments: Variable Temperature Scanning Probe Microscope Tags: ultra-high vacuum UHV VT SPM atomic-resolution imaging Volume: 519 Issue: 16 Pages: 5335-5338 Publication...

163

Contingency Simulation Using Single Phase Quadratized Power Flow  

E-Print Network [OSTI]

, a hybrid contingency selection technique is applied first to categorize system contingencies into two reliability test systems. Index Terms -- Compensation method, contingency simulation, hybrid contingency

164

Coherent Perfect Absorption of Single Photons  

E-Print Network [OSTI]

We examine the question of coherent perfect absorption (CPA) of single photons, and more generally, of the quantum fields. We show the CPA of path entangled single photons in a Fabry-Perot interferometer containing an absorptive medium. The frequency of perfect absorption can be controlled by changing the interferometer parameters like the reflectivity and the complex dielectric constant of the material. We exhibit similar results for path entangled photons in micro-ring resonators. For entangled fields like the ones produced by a down converter the CPA aspect is evident in phase sensitive detection schemes such as in measurements of the squeezing spectrum.

Huang, Sumei

2014-01-01T23:59:59.000Z

165

Linn County Rural E C A | Open Energy Information  

Open Energy Info (EERE)

Linn County Rural E C A Linn County Rural E C A Jump to: navigation, search Name Linn County Rural E C A Place Iowa Utility Id 11053 Utility Location Yes Ownership C NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Commercial and Multi-Phase Time of Day Single Phase Commercial Commercial and Multi-Phase Time of Day(Three Phase) Commercial Commerical Service (Single Phase) - Rate Code 3 Commercial Commerical Service (Three Phase) - Rate Code 3 Commercial Industrial Service (Single Phase) - Rate Code 3 Industrial Industrial Service (Three Phase) - Rate Code 3 Industrial

166

The Numerical Simulation on Cooling Effect of Microcapsulated Phase Change Material Suspension in Laminar Thermal Developing Section  

Science Journals Connector (OSTI)

The microcapsulated phase change material (MEPCM) suspension has obtained more and ... concerning MECPM suspension are generally reduced to single-phase models. In this paper, a novel two-phase model is construct...

P. Q. Liu; J. Jin; G. P. Lin

2009-01-01T23:59:59.000Z

167

SINGLE CRYSTAL SURFACE ENGINEERING  

E-Print Network [OSTI]

] ~ 310 [GPa] Phase g - Siebörger et al. [001] [111] #12;EPFL LASER CLADDING PROCESS Substrate Clad Remelted zone Vb Deposit G,VS LASER CLADDING PROCESS #12;EPFL b primary phaseg primary phase EPITAXY MCr CLADDING OF MCrAlY ON CMSX 4 #12;EPFL DENDRITE BRANCH SELECTION [100] [001] [010] [001] [010] [100] Laser

Cambridge, University of

168

Haywood Electric Member Corp | Open Energy Information  

Open Energy Info (EERE)

Electric Member Corp Electric Member Corp Jump to: navigation, search Name Haywood Electric Member Corp Place North Carolina Utility Id 8333 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png 10 Small General Service Single Phase 11 Small General Service Three Phase 12 Small General Time of Day Service Single Phase Commercial 13 Small General Time of Day Service Three Phase 14 Small General Demand Service Single Phase Commercial 17 Small General $mart Rate Service Single Phase- Controlled Kwh Commercial

169

Single-Molecule Chemistry  

Science Journals Connector (OSTI)

With the currently available optical facilities, it is now possible to observe the dynamic behavior of single biomolecules and to study their kinetics. Within a group of molecules (e.g., in an enzyme), ... static...

2008-01-01T23:59:59.000Z

170

Single tensionless transition in the Laplacian roughening model  

E-Print Network [OSTI]

We report large scale Monte Carlo simulations of the equilibrium discrete Laplacian roughening (dLr) model, originally introduced as the simplest one accommodating the hexatic phase in two-dimensional melting. The dLr model is also relevant to surface roughening in molecular beam epitaxy (MBE). Our data suggest a single phase transition, possibly of the Kosterlitz-Thouless type, between a flat low-temperature phase and a rough, tensionless, high-temperature phase. Thus, earlier conclusions on the order of the phase transition and on the existence of a hexatic phase are seen as due to finite size effects, the phase diagram of the dLr model being similar to that of a continuum analog previously formulated in the context of surface growth by MBE.

Juan Jesus Ruiz-Lorenzo; Esteban Moro; Rodolfo Cuerno

2006-01-23T23:59:59.000Z

171

CrowdPhase: crowdsourcing the phase problem  

Science Journals Connector (OSTI)

The idea of attacking the phase problem by crowdsourcing is introduced. Using an interactive, multi-player, web-based system, participants work simultaneously to select phase sets that correspond to better electron-density maps in order to solve low-resolution phasing problems.

Jorda, J.

2014-05-23T23:59:59.000Z

172

Quantum Phase Extraction in Isospectral Electronic Nanostructures  

SciTech Connect (OSTI)

Quantum phase is not a direct observable and is usually determined by interferometric methods. We present a method to map complete electron wave functions, including internal quantum phase information, from measured single-state probability densities. We harness the mathematical discovery of drum-like manifolds bearing different shapes but identical resonances, and construct quantum isospectral nanostructures possessing matching electronic structure but divergent physical structure. Quantum measurement (scanning tunneling microscopy) of these 'quantum drums' [degenerate two-dimensional electron states on the Cu(111) surface confined by individually positioned CO molecules] reveals that isospectrality provides an extra topological degree of freedom enabling robust quantum state transplantation and phase extraction.

Moon, Christopher

2010-04-28T23:59:59.000Z

173

Measurement of Condensed-Phase Reaction Kinetics in the Aerosol Phase Using Single Particle Mass Spectrometry  

E-Print Network [OSTI]

thermogravimetric analysis, and a comparison revealed significant differences in measured reaction rates between containing precursors are injected into a thermal reactor, with resulting evaporation of solvent and reaction the reliability of these methods.3 The literature is rife with examples indicating that traditional thermal a

Zachariah, Michael R.

174

E-Print Network 3.0 - annular two-phase flow Sample Search Results  

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

Rensselaer Polytechnic Institute Collection: Engineering 54 Boiling heat transfer in a hydrofoil-based micro pin fin heat sink Summary: single-phase heat transfer coefficient at...

175

SINGLE CRYSTAL NEUTRON DIFFRACTION.  

SciTech Connect (OSTI)

Single-crystal neutron diffraction measures the elastic Bragg reflection intensities from crystals of a material, the structure of which is the subject of investigation. A single crystal is placed in a beam of neutrons produced at a nuclear reactor or at a proton accelerator-based spallation source. Single-crystal diffraction measurements are commonly made at thermal neutron beam energies, which correspond to neutron wavelengths in the neighborhood of 1 Angstrom. For high-resolution studies requiring shorter wavelengths (ca. 0.3-0.8 Angstroms), a pulsed spallation source or a high-temperature moderator (a ''hot source'') at a reactor may be used. When complex structures with large unit-cell repeats are under investigation, as is the case in structural biology, a cryogenic-temperature moderator (a ''cold source'') may be employed to obtain longer neutron wavelengths (ca. 4-10 Angstroms). A single-crystal neutron diffraction analysis will determine the crystal structure of the material, typically including its unit cell and space group, the positions of the atomic nuclei and their mean-square displacements, and relevant site occupancies. Because the neutron possesses a magnetic moment, the magnetic structure of the material can be determined as well, from the magnetic contribution to the Bragg intensities. This latter aspect falls beyond the scope of the present unit; for information on magnetic scattering of neutrons see Unit 14.3. Instruments for single-crystal diffraction (single-crystal diffractometers or SCDs) are generally available at the major neutron scattering center facilities. Beam time on many of these instruments is available through a proposal mechanism. A listing of neutron SCD instruments and their corresponding facility contacts is included in an appendix accompanying this unit.

KOETZLE,T.F.

2001-03-13T23:59:59.000Z

176

Single Particle Laser Ablation | EMSL  

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

Single Particle Laser Ablation Single Particle Laser Ablation Leads No leads are available at this time. Effect of Solar Radiation on the Optical Properties and Molecular...

177

Single-exciton nanocrystal laser  

DOE Patents [OSTI]

A laser system employing amplification via a single exciton regime and to optical gain media having single exciton amplification is provided.

Klimov, Victor I. (Los Alamos, NM); Ivanov, Sergei A. (Albuquerque, NM)

2012-01-17T23:59:59.000Z

178

Nonlinear interaction between two heralded single photons  

E-Print Network [OSTI]

Harnessing nonlinearities strong enough to allow two single photons to interact with one another is not only a fascinating challenge but is central to numerous advanced applications in quantum information science. Currently, all known approaches are extremely challenging although a few have led to experimental realisations with attenuated classical laser light. This has included cross-phase modulation with weak classical light in atomic ensembles and optical fibres, converting incident laser light into a non-classical stream of photon or Rydberg blockades as well as all-optical switches with attenuated classical light in various atomic systems. Here we report the observation of a nonlinear parametric interaction between two true single photons. Single photons are initially generated by heralding one photon from each of two independent spontaneous parametric downconversion sources. The two heralded single photons are subsequently combined in a nonlinear waveguide where they are converted into a single photon with a higher energy. Our approach highlights the potential for quantum nonlinear optics with integrated devices, and as the photons are at telecom wavelengths, it is well adapted to applications in quantum communication.

T. Guerreiro; A. Martin; B. Sanguinetti; J. S. Pelc; C. Langrock; M. M. Fejer; N. Gisin; H. Zbinden; N. Sangouard; R. T. Thew

2014-03-09T23:59:59.000Z

179

Instantons in the Higgs phase  

SciTech Connect (OSTI)

When instantons are put into the Higgs phase, vortices are attached to instantons. We construct such composite solitons as 1/4 BPS states in five-dimensional supersymmetric U(N{sub C}) gauge theory with N{sub F}({>=}N{sub C}) fundamental hypermultiplets. We solve the hypermultiplet BPS equation and show that all 1/4 BPS solutions are generated by an N{sub C}xN{sub F} matrix which is holomorphic in two complex variables, assuming the vector multiplet BPS equation does not give additional moduli. We determine the total moduli space formed by topological sectors patched together and work out the multi-instanton solution inside a single vortex with complete moduli. Small instanton singularities are interpreted as small sigma-model lump singularities inside the vortex. The relation between monopoles and instantons in the Higgs phase is also clarified as limits of calorons in the Higgs phase. Another type of instantons stuck at an intersection of two vortices and dyonic instantons in the Higgs phase are also discussed.

Eto, Minoru; Isozumi, Youichi; Nitta, Muneto; Ohashi, Keisuke; Sakai, Norisuke [Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551 (Japan)

2005-07-15T23:59:59.000Z

180

Quantum Spin Hall Phases  

Science Journals Connector (OSTI)

......even it is called the weak topological in- sulator (WTI). The STI and WTI correspond to the QSH and I phases, respectively...are used to distinguish various phases in the STI or WTI phases, and each phase can be associated with a mod......

Shuichi Murakami

2008-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Method for thermal processing alumina-enriched spinel single crystals  

DOE Patents [OSTI]

A process for age-hardening alumina-rich magnesium aluminum spinel to obtain the desired combination of characteristics of hardness, clarity, flexural strength and toughness comprises selection of the time-temperature pair for isothermal heating followed by quenching. The time-temperature pair is selected from the region wherein the precipitate groups have the characteristics sought. The single crystal spinel is isothermally heated and will, if heated long enough pass from its single phase through two pre-precipitates and two metastable precipitates to a stable secondary phase precipitate within the spinel matrix. Quenching is done slowly at first to avoid thermal shock, then rapidly. 12 figs.

Jantzen, C.M.

1995-05-09T23:59:59.000Z

182

Number-phase uncertainty relations: Verification by balanced homodyne measurement  

Science Journals Connector (OSTI)

It is shown that fundamental uncertainty relations between photon number and canonical phase of a single-mode optical field can be verified by means of a balanced homodyne measurement. All the relevant quantities can be sampled directly from the measured phase-dependent quadrature distribution.

T. Opatrný; M. Dakna; D.-G. Welsch

1998-03-01T23:59:59.000Z

183

Single rotor turbine engine  

DOE Patents [OSTI]

There has been invented a turbine engine with a single rotor which cools the engine, functions as a radial compressor, pushes air through the engine to the ignition point, and acts as an axial turbine for powering the compressor. The invention engine is designed to use a simple scheme of conventional passage shapes to provide both a radial and axial flow pattern through the single rotor, thereby allowing the radial intake air flow to cool the turbine blades and turbine exhaust gases in an axial flow to be used for energy transfer. In an alternative embodiment, an electric generator is incorporated in the engine to specifically adapt the invention for power generation. Magnets are embedded in the exhaust face of the single rotor proximate to a ring of stationary magnetic cores with windings to provide for the generation of electricity. In this alternative embodiment, the turbine is a radial inflow turbine rather than an axial turbine as used in the first embodiment. Radial inflow passages of conventional design are interleaved with radial compressor passages to allow the intake air to cool the turbine blades.

Platts, David A. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

184

Formation of binary phase gratings in photopolymer-liquid crystal composites by a surface-controlled anisotropic phase separation  

SciTech Connect (OSTI)

We report on formation of binary phase gratings in photopolymer-liquid crystal (PLC) composites using a surface-controlled phase separation method. The binary nature of the PLC phase gratings is produced by employing a single step photo-ablation through an amplitude photomask which precisely controls the interfacial interactions between the LC and the photopolymer on the alignment layer. A subsequent illumination of the ultraviolet light onto the whole PLC promotes an anisotropic phase separation resulting in the formation of distinct binary patterns for the PLC structure. The electrically tunable diffraction properties of the binary phase gratings are presented.

Park, Jae-Hong; Khoo, Iam Choon; Yu, Chang-Jae; Jung, Min-Sik; Lee, Sin-Doo [216 Electrical Engineering East, Pennsylvania State University, University Park, Pennsylvania 16802 (United States); School of Electrical Engineering no. 32, Seoul National University, Kwanak P.O. Box 34, Seoul 151-600 (Korea, Republic of)

2005-01-10T23:59:59.000Z

185

Single atom as a macroscopic entanglement source  

E-Print Network [OSTI]

by many authors including the generation of entangled coherent state #3;1?3#4;, single photon and vacuum entanglement #3;4#4;, and two-atom entanglement #3;5#4;. More recently, generation of macroscopic entangled states via phase sensitive... cascade configuration crossing or trapped in a two-mode field cavity. The atomic level configuration is depicted in Fig. 1. The two atomic transitions #5;a#6;? #5;b#6; and #5;b#6;? #5;c#6; interact with the two cavity modes with detunings #1...

Zhou, Ling; Xiong, Han; Zubairy, M. Suhail.

2006-01-01T23:59:59.000Z

186

Synthesis of alloys with controlled phase structure  

DOE Patents [OSTI]

A method for preparing controlled phase alloys useful for engineering and hydrogen storage applications. This novel method avoids melting the constituents by employing vapor transport, in a hydrogen atmosphere, of an active metal constituent, having a high vapor pressure at temperatures .apprxeq.300 C. and its subsequent condensation on and reaction with the other constituent (substrate) of an alloy thereby forming a controlled phase alloy and preferably a single phase alloy. It is preferred that the substrate material be a metal powder such that diffusion of the active metal constituent, preferably magnesium, and reaction therewith can be completed within a reasonable time and at temperatures .apprxeq.300 C. thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds.

Guthrie, Stephen Everett (Livermore, CA); Thomas, George John (Livermore, CA); Bauer, Walter (Livermore, CA); Yang, Nancy Yuan Chi (Lafayette, CA)

1999-04-20T23:59:59.000Z

187

Synthesis of alloys with controlled phase structure  

DOE Patents [OSTI]

A method is described for preparing controlled phase alloys useful for engineering and hydrogen storage applications. This novel method avoids melting the constituents by employing vapor transport, in a hydrogen atmosphere, of an active metal constituent, having a high vapor pressure at temperatures {approx_equal}300 C and its subsequent condensation on and reaction with the other constituent (substrate) of an alloy thereby forming a controlled phase alloy and preferably a single phase alloy. It is preferred that the substrate material be a metal powder such that diffusion of the active metal constituent, preferably magnesium, and reaction therewith can be completed within a reasonable time and at temperatures {approx_equal}300 C thereby avoiding undesirable effects such as sintering, local compositional inhomogeneities, segregation, and formation of unwanted second phases such as intermetallic compounds. 4 figs.

Guthrie, S.E.; Thomas, G.J.; Bauer, W.; Yang, N.Y.C.

1999-04-20T23:59:59.000Z

188

Mecklenburg Electric Coop, Inc | Open Energy Information  

Open Energy Info (EERE)

Virginia Virginia Utility Id 12260 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png SCHEDULE INT-SEA-U SEASONAL INTERRUPTIBLE SERVICE Industrial SCHEDULE INT-U YEAR ROUND INTERRUPTIBLE SERVICE Industrial SCHEDULE LGS-TOD-U LARGE GENERAL TIME-OF-DAY SERVICE Industrial SCHEDULE LGS-U LARGE GENERAL SERVICE Industrial SCHEDULE LP-2-U-CA LARGE POWER SERVICE- CUSTOMER ACCESS Industrial SCHEDULE MGS-TOD-U MEDIUM GENERAL TIME-OF-DAY SERVICE Multi-Phase Industrial SCHEDULE MGS-TOD-U MEDIUM GENERAL TIME-OF-DAY SERVICE Single Phase

189

Single-Walle 4. Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

applications, carbon nanotube research is ac- tively being pursued in diverse areas including energy storage105 Single-Walle 4. Single-Walled Carbon Nanotubes Sebastien Nanot, Nicholas A. Thompson, Ji Single-walled carbon nanotubes (SWCNTs) are hol- low, long cylinders with extremely large aspect ratios

Kono, Junichiro

190

Phase-Transfer Catalysts  

Science Journals Connector (OSTI)

In previous chapters we learned that a phase-transfer catalyst must have two particular chemical functions to be successful, that is, it must rapidly transfer one of the reactant species into the normal phase ...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

191

Piecewise Linear Phase Transitions  

E-Print Network [OSTI]

It is shown how simple assumptions lead to piecewise linear behavior, which is observed in certain phase transitions.

Joseph B. Keller

2007-11-26T23:59:59.000Z

192

Low temperature magnetic transitions of single crystal HoBi  

SciTech Connect (OSTI)

We present resistivity, specific heat and magnetization measurements in high quality single crystals of HoBi, with a residual resistivity ratio of 126. We find, from the temperature and field dependence of the magnetization, an antiferromagnetic transition at 5.7 K, which evolves, under magnetic fields, into a series of up to five metamagnetic phases.

Fente, A. [Universidad Autonoma de Madrid; Suderow, H. [Universidad Autonoma de Madrid; Vieira, S. [Universidad Autonoma de Madrid; Nemes, N. M. [Instituto de Ciencia de Materiales de Madrid; Garcia-Hernandez, M. [Instituto de Ciencia de Materiales de Madrid; Budko, Sergei L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory

2013-09-04T23:59:59.000Z

193

Hybrid Multilevel Inverter with Single DC Haiwen Liu1  

E-Print Network [OSTI]

Hybrid Multilevel Inverter with Single DC Source Haiwen Liu1 , Leon M. Tolbert1, 2 , Burak Ozpineci Knoxville, TN 37932 3. Parker-Hannifin Corp. Olive Branch, MI 38654 Abstract- A hybrid multilevel inverter inverter (one leg for each phase) and H-bridge in series with each inverter leg. The inverter can be used

Tolbert, Leon M.

194

Strong extinction of a laser beam by a single molecule  

E-Print Network [OSTI]

We present an experiment where a single molecule strongly affects the amplitude and phase of a laser field emerging from a subwavelength aperture. We achieve a visibility of -6% in direct and +10% in cross-polarized detection schemes. Our analysis shows that a close to full extinction should be possible using near-field excitation.

I. Gerhardt; G. Wrigge; P. Bushev; G. Zumofen; R. Pfab; V. Sandoghdar

2006-04-24T23:59:59.000Z

195

Multimedia Phase-Spaces  

Science Journals Connector (OSTI)

Dynamic phase-spaces are suggested as a way of designing and implementing interactive multimedia systems. A dynamic phase-space is a space of properties overlayed with dynamics. The space is “decorated” with multimedia resources such ... Keywords: catastrophe theory, dynamics, installation, interactive narrative, museums, phase-space

Peter Břgh Andersen

1998-05-01T23:59:59.000Z

196

Single molecule fluorescence (the basics)  

E-Print Network [OSTI]

Single molecule fluorescence (the basics) #12;light time light time No averaging, no need;knrkr S0 S1 Iph . . Iexc #12;Single molecule emitters #12;K. Brejc et.al., PNAS 94 (1997) 2306 1 nm glass, notch holographic, multidielectric,... #12;Optical schemes to detect single molecules Excitation

Ritort, Felix

197

Cedarburg Light & Water Comm | Open Energy Information  

Open Energy Info (EERE)

Cedarburg Light & Water Comm Cedarburg Light & Water Comm Jump to: navigation, search Name Cedarburg Light & Water Comm Place Wisconsin Utility Id 3208 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service - Regular Rate - Single Phase Commercial General Service - Regular rate - Three Phase Commercial General Service Optional Time-of-Day Rate - Single Phase 7am-7pm Commercial General Service Optional Time-of-Day Rate - Single Phase 8am-8pm Commercial

198

Single-Nucleon Densities  

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

Densities Densities This web page presents single-nucleon densities calculated for a variety of nuclei in the range A=2-10 with some preliminary results for A=11,12. These are from variational Monte Carlo calculations (VMC) using the Argonne v18 two-nucleon and Urbana X three-nucleon potentials (AV18+UX). (Urbana X is intermediate between the Urbana IX and Illinois-7 models; it has the form of UIX supplemented with a two-pion S-wave piece, while the strengths of its terms are taken from the IL7 model. It does NOT have the three-pion-ring term of IL7.) These VMC wave functions are the starting trial functions for a number of recent Green's function Monte Carlo (GFMC) calculations: Brida, et al., Phys. Rev. C 84, 024319 (2011); McCutchan, et al., Phys. Rev. C 86, 024315 (2012);

199

Single-Column Modeling  

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

C.J. Somerville and S. F. lacobellis C.J. Somerville and S. F. lacobellis Climate Research Division Scripps Institution of Oceanography University of California, San Diego La Jolla, CA 92093-0224 Our project is centered around a computationally efficient and economical one-dimensional (vertical) model, resembling a single column of a general circulation model (GCM) grid, applied to the experimental site of the Atmospheric Radiation Measurement (ARM) Program. The model contains a full set of modern GCM parameterizations of subgrid physical processes. To force the model, the advective terms in the budget equations are specified observationally from operational numerical weather prediction analyses. These analyses, based on four-dimensional data assimilation techniques, provide dynamically consistent wind fields and horizontal gradients

200

Single molecule laser spectroscopy  

Science Journals Connector (OSTI)

Abstract In this article, we discussed some single molecule spectroscopy techniques and methods. We have chosen the simplicity in this survey based on our laboratory experience in this field. We concentrated on the imaging by both techniques the wide field and the scanning microscopes. Other imaging enhancements on the technique like extended resolution wide field, the total internal reflection imaging, and its derivatives are also reviewed. In addition to the imaging techniques, some diffusion techniques also are discussed like fluorescence correlation spectroscopy. The related methods like Forester resonance transfer, photo-induced electron transfer and anisotropy (steady state and time decay) are also discussed. In addition, we elucidated some simple details about the theory behind the FCS and its resulting curve fitting. This review is preceded by general introduction and ended with the conclusion.

Diaa Atta; Ali Okasha

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Fig. 1: (a) Conventional dual-pump degenerate PSA using a straight HNLF: phase regeneration effect varies with polarization alignment between BPSK signal and two phase-locked pumps. (b) Polarization-diversity PSA  

E-Print Network [OSTI]

Fig. 1: (a) Conventional dual-pump degenerate PSA using a straight HNLF: phase regeneration effect varies with polarization alignment between BPSK signal and two phase-locked pumps. (b) Polarization. Pump 2Signal Pump 1 HNLF Impaired by phase noise I Q Single-polarization BPSK signal Pump1 (Phase

Touch, Joe

202

Single-Photon Spectroscopy of a Single Molecule  

Science Journals Connector (OSTI)

Efficient interaction of light and matter at the ultimate limit of single photons and single emitters is of great interest from a fundamental point of view and for emerging applications in quantum engineering. However, the difficulty of generating single-photon streams with specific wavelengths, bandwidths, and power as well as the weak interaction probability of a single photon with an optical emitter pose a formidable challenge toward this goal. Here, we demonstrate a general approach based on the creation of single photons from a single emitter and their use for performing spectroscopy on a second emitter situated at a distance. While this first proof of principle realization uses organic molecules as emitters, the scheme is readily extendable to quantum dots and color centers. Our work ushers in a new line of experiments that provide access to the coherent and nonlinear couplings of few emitters and few propagating photons.

Y. L. A. Rezus; S. G. Walt; R. Lettow; A. Renn; G. Zumofen; S. Götzinger; V. Sandoghdar

2012-02-27T23:59:59.000Z

203

A Network Model for The Genesis and Migration of Gas Phase  

E-Print Network [OSTI]

1 A Network Model for The Genesis and Migration of Gas Phase Koukung Alex Chang and W. Brent, of a compositional fluid consisting of water with a dissolved hydrocarbon gas. The model captures both single phase 99% of the (effectively) stored CO2 resides in the liquid phase. Key Words: network model, gas

New York at Stoney Brook, State University of

204

Structure of high-temperature nickel alloy ZhS36VI for single-crystal blades of high-pressure turbines  

Science Journals Connector (OSTI)

The fine structure, phase composition, and segregation inhomogeneity of carbonless single-crystal rhenium-alloyed alloy ZhS36VI in cast and heat-treated conditions are studied. The structural and phase stabili...

V. P. Kuznetsov; V. P. Lesnikov; E. V. Moroz…

2008-03-01T23:59:59.000Z

205

NGNP PHASE I REVIEW  

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

REVIEW REVIEW NEAC REACTOR TECHNOLOGY SUBCOMMITTEE FINAL REPORT JUNE 15, 2011 EPACT 2005 REQUIREMENTS * FIRST PROJECT PHASE REVIEW-On a determination by the Secretary that the appropriate activities under the first project phase under subsection (b)(1) are nearly complete, the Secretary shall request the NERAC to conduct a comprehensive review of the Project and to report to the Secretary the recommendation of the NERAC concerning whether the Project is ready to proceed to the second project phase under subsection (b)(2) NGNP PROJECT PHASES (1) FIRST PHASE.-A first project phase shall be conducted to- (A) select and validate the appropriate technology under subsection (a)(1); (B) carry out enabling research, development, and demonstration activities on technologies and components under

206

Insights from first principles molecular dynamics studies toward infrared multiple-photon and single-photon action spectroscopy: Case study  

E-Print Network [OSTI]

­35 condensed phase,43­46 and gas-phase cluster chemistry.1,6,8­11,21,22,24­26 Experimental studies techniques accurately capture the effects of conformational sampling, adequately reproduce both spectra11,30 and the infrared multiple-photon dissocia- tion7,10,47­50 IRMPD approach. Both gas phase single

Iyengar, Srinivasan S.

207

Holographic Magnetic Phase Transition  

E-Print Network [OSTI]

We study four-dimensional interacting fermions in a strong magnetic field, using the holographic Sakai-Sugimoto model of intersecting D4 and D8 branes in the deconfined, chiral-symmetric parallel phase. We find that as the magnetic field is varied, while staying in the parallel phase, the fermions exhibit a first-order phase transition in which their magnetization jumps discontinuously. Properties of this transition are consistent with a picture in which some of the fermions jump to the lowest Landau level. Similarities to known magnetic phase transitions are discussed.

Gilad Lifschytz; Matthew Lippert

2009-06-21T23:59:59.000Z

208

Degenerate Metric Phase Boundaries  

E-Print Network [OSTI]

The structure of boundaries between degenerate and nondegenerate solutions of Ashtekar's canonical reformulation of Einstein's equations is studied. Several examples are given of such "phase boundaries" in which the metric is degenerate on one side of a null hypersurface and non-degenerate on the other side. These include portions of flat space, Schwarzschild, and plane wave solutions joined to degenerate regions. In the last case, the wave collides with a planar phase boundary and continues on with the same curvature but degenerate triad, while the phase boundary continues in the opposite direction. We conjecture that degenerate phase boundaries are always null.

Ingemar Bengtsson; Ted Jacobson

1999-01-23T23:59:59.000Z

209

During Phase 3, WIPP  

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

UPDATE: April 14, 2014 Phase 3 activities begin Two teams re-entered the WIPP underground facility on Saturday, moving closer to suspected location of the February 14...

210

NGNP PHASE I REVIEW  

Energy Savers [EERE]

and start up operations of the prototype nuclear reactor and its associated hydrogen or electricity production facilities. Scope of Work for Review * Review Phase I reports in...

211

Single-Molecule Studies of Gene Expression  

E-Print Network [OSTI]

material for the single-molecule transcription experimentsGeometry for the single-molecule assay of bare DNAgeometry for the single-molecule translation assay .

Hodges, Hamilton Courtney

2009-01-01T23:59:59.000Z

212

Fluorescence, Single-Molecule Microscope | EMSL  

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

Single-Molecule Microscope Fluorescence, Single-Molecule Microscope The single-molecule optical microscope is designed to study complex reaction dynamics such as enzymatic...

213

Nanometer Resolution Imaging by SIngle Molecule Switching. |...  

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

Nanometer Resolution Imaging by SIngle Molecule Switching. Nanometer Resolution Imaging by SIngle Molecule Switching. Abstract: The fluorescence intensity of single molecules can...

214

High Throughput Single Molecule Investigation of Transcription  

E-Print Network [OSTI]

genomic DNA based on single-molecule detection. Analyticalmapping: a novel, single- molecule approach to genomic2011). High-throughput single-molecule optofluidic analysis.

Kim, Soohong

2012-01-01T23:59:59.000Z

215

Single Top production at LHC  

E-Print Network [OSTI]

The Production of single top quarks at LHC provides an ideal framework to investigate the properties of electroweak interaction, in particular of the {\\it tWb} coupling. Moreover, single top is a powerful mean to identify physics beyond the standard model. All three different production mechanisms of single top are expected to be observed at LHC. Recent studies from ATLAS and CMS are presented.

M. Mohammadi Najafabadi

2006-05-12T23:59:59.000Z

216

EMSL - Single Particle Laser Ablation  

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

single-particle-laser-ablation en Effect of Solar Radiation on the Optical Properties and Molecular Composition of Laboratory Proxies of Atmospheric Brown Carbon http:...

217

Nanochannel based single molecule recycling.  

E-Print Network [OSTI]

??Single molecule fluorescence measurements provide detailed information about sub-populations, transition intermediates and kinetic data for systems that are not able to be synchronized by removing… (more)

Lesoine, John Frederick (1980 - )

2010-01-01T23:59:59.000Z

218

Three phase AC motor controller  

DOE Patents [OSTI]

A motor controller for a three phase AC motor (10) which is adapted to operate bidirectionally from signals received either from a computer (30) or a manual control (32). The controller is comprised of digital logic circuit means which implement a forward and reverse command signal channel (27, 29) for the application of power through the forward and reverse power switching relays (16, 18, 20, 22). The digital logic elements are cross coupled to prevent activation of both channels simultaneously and each includes a plugging circuit (65, 67) for stopping the motor upon the removal of control signal applied to one of the two channels (27, 29) for a direction of rotation desired. Each plugging circuit (65, 67) includes a one-shot pulse signal generator (88, 102) which outputs a single pulse signal of predetermined pulsewidth which is adapted to inhibit further operation of the application of power in the channel which is being activated and to apply a reversal command signal to the other channel which provides a reversed phase application of power to the motor for a period defined by the pulse-width output of the one-shot signal generator to plug the motor (10) which will then be inoperative until another rotational command signal is applied to either of the two channels.

Vuckovich, Michael (Elizabeth, PA); Wright, Maynard K. (Bethel Park, PA); Burkett, John P. (South Huntington Township, Westmoreland County, PA)

1984-03-20T23:59:59.000Z

219

Two Rivers Water & Light | Open Energy Information  

Open Energy Info (EERE)

Water & Light Water & Light Jump to: navigation, search Name Two Rivers Water & Light Place Wisconsin Utility Id 19324 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes Alt Fuel Vehicle Yes Alt Fuel Vehicle2 Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Business District Lighting- 150W HPS Lighting Business District Lighting- 200W HPS Lighting General Service- Single-Phase Commercial General Service- Single-Phase- Time-of-Day- 7am-7pm Commercial General Service- Single-Phase- Time-of-Day- 8am-8pm Commercial

220

Adams Electric Coop | Open Energy Information  

Open Energy Info (EERE)

Coop Coop Place Illinois Utility Id 97 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Rate Schedule A General Purpose- Single Phase Commercial Rate Schedule A-Tod-Grain Drying (General Purpose-Single Purpose) Commercial Rate Schedule A-Tod-Residential (General Purpose-Single Purpose Time of day) Residential Rate Schedule B General Purpose-Three Phase Commercial Rate Schedule B-Tod-Grain Drying(General Purpose-Three Phase)Time of Day Residential Rate Schedule CAC (Controlled Air Conditioning) Commercial

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


221

A Phase Odyssey  

SciTech Connect (OSTI)

We are introduced to the effects of phase from the earliest days of our childhood, from the nursery rhyme above (or its less verbose for 'Twinkle, Twinkle Little Star') to the shimmer over a hot road and the network of bright lines at the bottom of a swimming pool. These are all manifestations of phase. And there are many more.

Nugent, K.A.; Paganin, D.; Gureyev, T.E. (Melbourne)

2009-01-06T23:59:59.000Z

222

Electrical heating of soils using high efficiency electrode patterns and power phases  

DOE Patents [OSTI]

Powerline-frequency electrical (joule) heating of soils using a high efficiency electrode configuration and power phase arrangement. The electrode configuration consists of several heating or current injection electrodes around the periphery of a volume of soil to be heated, all electrodes being connected to one phase of a multi-phase or a single-phase power system, and a return or extraction electrode or electrodes located inside the volume to be heated being connected to the remaining phases of the multi-phase power system or to the neutral side of the single-phase power source. This electrode configuration and power phase arrangement can be utilized anywhere where powerline frequency soil heating is applicable and thus has many potential uses including removal of volatile organic compounds such as gasoline and tricholorethylene (TCE) from contaminated areas.

Buettner, Harley M. (Livermore, CA)

1999-01-01T23:59:59.000Z

223

ARM - Measurement - Hydrometeor phase  

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

phase phase ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Hydrometeor phase Hydrometeor phase such as liquid ice or mixed phase Categories Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. Value-Added Products VISST : Minnis Cloud Products Using Visst Algorithm (Process) VISSTPX04G08V2MINNIS : VISST-derived pixel-level products from satellite GOES8, version 2 VISSTPX04G08V3MINNIS : VISST-derived pixel-level products from satellite GOES8, version 3

224

Brodhead Water & Lighting Comm | Open Energy Information  

Open Energy Info (EERE)

Brodhead Water & Lighting Comm Brodhead Water & Lighting Comm Jump to: navigation, search Name Brodhead Water & Lighting Comm Place Wisconsin Utility Id 2273 Utility Location Yes Ownership M NERC Location MRO NERC MRO Yes ISO MISO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png General Service - GS-1 - Single Phase Commercial General Service - GS-1 Three Phase Commercial General-OTD 1-Three Phase Commercial General-OTD- Single Phase Commercial Industrial Power Time of day CP-3 above 1,000kW Demand Primary Metering and Transformer Discount Industrial Industrial Power Time of day CP-3 above 1,000kW Demand Industrial

225

Town of Wheatland, Wyoming (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Wyoming (Utility Company) Wyoming (Utility Company) Jump to: navigation, search Name Town of Wheatland Place Wyoming Utility Id 20512 Utility Location Yes Ownership M NERC Location WECC Activity Bundled Services Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png 175W Mercury Vapor Lighting 400W Mercury Vapor Lighting 700W Mercury Vapor Lighting Electric Home Heating Residential Energy Development Commercial General Service Time-of-Day- Single-Phase Commercial General Service Time-of-Day- Three-Phase Commercial General Service- Single-Phase Commercial General Service- Three-Phase Commercial

226

Quantitative biology of single neurons  

Science Journals Connector (OSTI)

...1930-1931. 25 Pawley, J. B. 2006 Handbook of biological confocal microscopy. New...NY: Springer. 26 Grupen, C. 2011 Handbook of particle detection and imaging. New...biological systems are single cells. Fundamental insights gained from single-cell analysis...

2012-01-01T23:59:59.000Z

227

Single spin asymmetries in QCD  

E-Print Network [OSTI]

Measurements of single transverse spin asymmetries in high energy inclusive processes have always shown unexpected and challenging results. Several cases are considered and discussed within a QCD approach which couples perturbative dynamics to new non perturbative partonic information; the aim is that of developing a consistent phenomenological description of these unusual single spin phenomena, based on a generalized QCD factorization scheme.

Mauro Anselmino

2002-01-16T23:59:59.000Z

228

Coherent perfect absorption of path entangled single photons  

E-Print Network [OSTI]

We examine the question of coherent perfect absorption (CPA) of single photons, and more generally, of the quantum fields by a {\\it macroscopic} medium. We show the CPA of path entangled single photons in a Fabry-Perot interferometer containing an absorptive medium. The frequency of perfect absorption can be controlled by changing the interferometer parameters like the reflectivity and the complex dielectric constant of the material. We exhibit similar results for path entangled photons in micro-ring resonators. For entangled fields like the ones produced by a down converter the CPA aspect is evident in phase sensitive detection schemes such as in measurements of the squeezing spectrum.

Sumei Huang; G. S. Agarwal

2014-02-28T23:59:59.000Z

229

Electrochemical Quantification of Single Nucleotide Polymorphisms...  

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

Quantification of Single Nucleotide Polymorphisms Using Nanoparticle Probes. Electrochemical Quantification of Single Nucleotide Polymorphisms Using Nanoparticle Probes. Abstract:...

230

Free Energy Functionals for Efficient Phase Field Crystal Modeling of Structural Phase Transformations  

Science Journals Connector (OSTI)

The phase field crystal (PFC) method is a promising technique for modeling materials with atomic resolution on mesoscopic time scales. While numerically more efficient than classical density functional theory (CDFT), its single mode free energy limits the complexity of structural transformations that can be simulated. We introduce a new PFC model inspired by CDFT, which uses a systematic construction of two-particle correlation functions that allows for a broad class of structural transformations. Our approach considers planar spacings, lattice symmetries, planar atomic densities, and atomic vibrational amplitudes in the unit cell, and parameterizes temperature and anisotropic surface energies. The power of our approach is demonstrated by two examples of structural phase transformations.

Michael Greenwood; Nikolas Provatas; Jörg Rottler

2010-07-23T23:59:59.000Z

231

Single Cell Whole Genome Amplification  

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

Single Cell Whole Genome Amplification Single Cell Whole Genome Amplification of Uncultivated Organisms Mircea Podar , Martin Keller , and Philip Hugenholtz (* ĂĽ ) Abstract Whole genome amplification of single cells is emerging as a powerful technique for accessing the genomes of individual members of microbial communi- ties without the complication of identifying the source of sequence data posed by shotgun sequencing of environmental samples (metagenomics). This method holds particular promise for the molecular unveiling of uncultivated organisms that com- prise the bulk of the microbial diversity and functionality on our planet. 1 Introduction Over the last two decades, it has become increasingly apparent that microbial diversity

232

Phasing tiny crystals  

Science Journals Connector (OSTI)

For tiny crystals, their diffraction intensities at and between the Bragg peaks become measurable due to the limited number of the unit cells, which can in principle be used to directly phase the crystal structures.

Miao, J.

2013-12-31T23:59:59.000Z

233

Sliding Luttinger liquid phases  

Science Journals Connector (OSTI)

We study systems of coupled spin-gapped and gapless Luttinger liquids. First, we establish the existence of a sliding Luttinger liquid phase for a system of weakly coupled parallel quantum wires, with and without disorder. It is shown that the coupling can stabilize a Luttinger liquid phase in the presence of disorder. We then extend our analysis to a system of crossed Luttinger liquids and establish the stability of a non-Fermi-liquid state: the crossed sliding Luttinger liquid phase. In this phase the system exhibits a finite-temperature, long-wavelength, isotropic electric conductivity that diverges as a power law in temperature T as T?0. This two-dimensional system has many properties of a true isotropic Luttinger liquid, though at zero temperature it becomes anisotropic. An extension of this model to a three-dimensional stack exhibits a much higher in-plane conductivity than the conductivity in a perpendicular direction.

Ranjan Mukhopadhyay; C. L. Kane; T. C. Lubensky

2001-07-09T23:59:59.000Z

234

Single nanoparticle tracking spectroscopic microscope  

DOE Patents [OSTI]

A system that can maintain and track the position of a single nanoparticle in three dimensions for a prolonged period has been disclosed. The system allows for continuously imaging the particle to observe any interactions it may have. The system also enables the acquisition of real-time sequential spectroscopic information from the particle. The apparatus holds great promise in performing single molecule spectroscopy and imaging on a non-stationary target.

Yang, Haw (Moraga, CA); Cang, Hu (Berkeley, CA); Xu, Cangshan (Berkeley, CA); Wong, Chung M. (San Gabriel, CA)

2011-07-19T23:59:59.000Z

235

Single axioms for Boolean algebra.  

SciTech Connect (OSTI)

Explicit single axioms are presented for Boolean algebra in terms of (1) the Sheffer stroke; (2) disjunction and negation; (3) disjunction, conjunction, and negation; and (4) disjunction, conjunction, negation, 0, and 1. It was previously known that single axioms exist for these systems, but the procedures to generate them are exponential, producing huge equations. Automated deduction techniques were applied to find axioms of lengths 105, 131, 111, and 127, respectively, each with six variables.

McCune, W.

2000-06-30T23:59:59.000Z

236

NETL: Gasification - Single-Crystal Sapphire Optical Fiber Sensor  

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

Gasifier Optimization and Plant Supporting Systems Gasifier Optimization and Plant Supporting Systems Single-Crystal Sapphire Optical Fiber Sensor Instrumentation Virginia Polytechnic Institute and State University Center for Photonics Technology Project Number: DE-FC26-99FT40685 Project Description Phase I - The Photonics Laboratory at Virginia Tech has successfully developed a novel temperature sensor capable of operating at temperatures up to 1600 °C and in harsh conditions. The sensor uses single-crystal sapphire to make an optically-based measurement and will fulfill the need for the real-time monitoring of high temperatures created in gasification processes. Phase II - Based on a successful Phase I laboratory demonstration of a Broadband Polarimetric Differential Interferometric (BPDI) temperature sensor, Virginia Tech's Phase II development objective is to further the development of the sensor for industrial use in slagging coal gasifiers. This will include ruggedizing the design of the sensor and creation of a suitable protective housing such that it can be placed into existing ports of coal gasifiers. The potential industrial use of the sensor will be determined through full-scale testing and development. The sensor design and fabrication has been completed and is undergoing testing. Overall performance and survivability of the sensor will be determined.

237

Phase Insensitive Frequency Modulation Sensor for Long Distance CO2 Monitoring  

Science Journals Connector (OSTI)

We report a long distance CO2 monitoring LIDAR using phase insensitive Two-Tone Frequency Modulation (TTFM) over 1.4km. We could detect 1ppm single pass CO2...

Wu, Sheng; Deev, Andrei

238

Variables in Reaction Design for Laboratory and Industrial Applications of Phase-Transfer Catalysis  

Science Journals Connector (OSTI)

Many factors, known and unknown, contribute to the effective selection of a catalyst and other conditions for a given phase-transfer catalysis (PTC) application. Therefore, no simple single guideline exists fo...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

239

Two Phase Transitions Make a High-Temperature Superconductor  

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

Two Phase Transitions Make a High-Temperature Superconductor Print Two Phase Transitions Make a High-Temperature Superconductor Print Superconductivity-conceptually remarkable and practically revolutionary-is a quantum phenomenon in which bound electron pairs flow through a material in perfect synchrony, without friction. Conventional superconducting materials reach this state via a single thermal phase transition at a critical temperature (Tc). It was generally believed that such a picture also applied to the copper oxide (cuprate) superconductors-first discovered 25 years ago and the current record holders for highest Tc. However, three groups of researchers who performed measurements on the same cuprate material recently joined forces to prove that this view is inaccurate. Their work showed that another phase transition actually exists at a higher temperature in the cuprate phase diagram, below which electrons, instead of pairing up, organize themselves in a drastically different way.

240

Two Phase Transitions Make a High-Temperature Superconductor  

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

Two Phase Transitions Make a High-Temperature Superconductor Print Two Phase Transitions Make a High-Temperature Superconductor Print Superconductivity-conceptually remarkable and practically revolutionary-is a quantum phenomenon in which bound electron pairs flow through a material in perfect synchrony, without friction. Conventional superconducting materials reach this state via a single thermal phase transition at a critical temperature (Tc). It was generally believed that such a picture also applied to the copper oxide (cuprate) superconductors-first discovered 25 years ago and the current record holders for highest Tc. However, three groups of researchers who performed measurements on the same cuprate material recently joined forces to prove that this view is inaccurate. Their work showed that another phase transition actually exists at a higher temperature in the cuprate phase diagram, below which electrons, instead of pairing up, organize themselves in a drastically different way.

Note: This page contains sample records for the topic "time-of-day single phase" 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

Two Phase Transitions Make a High-Temperature Superconductor  

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

Two Phase Transitions Make a High-Temperature Superconductor Print Two Phase Transitions Make a High-Temperature Superconductor Print Superconductivity-conceptually remarkable and practically revolutionary-is a quantum phenomenon in which bound electron pairs flow through a material in perfect synchrony, without friction. Conventional superconducting materials reach this state via a single thermal phase transition at a critical temperature (Tc). It was generally believed that such a picture also applied to the copper oxide (cuprate) superconductors-first discovered 25 years ago and the current record holders for highest Tc. However, three groups of researchers who performed measurements on the same cuprate material recently joined forces to prove that this view is inaccurate. Their work showed that another phase transition actually exists at a higher temperature in the cuprate phase diagram, below which electrons, instead of pairing up, organize themselves in a drastically different way.

242

Two Phase Transitions Make a High-Temperature Superconductor  

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

Two Phase Transitions Make a High-Temperature Superconductor Print Two Phase Transitions Make a High-Temperature Superconductor Print Superconductivity-conceptually remarkable and practically revolutionary-is a quantum phenomenon in which bound electron pairs flow through a material in perfect synchrony, without friction. Conventional superconducting materials reach this state via a single thermal phase transition at a critical temperature (Tc). It was generally believed that such a picture also applied to the copper oxide (cuprate) superconductors-first discovered 25 years ago and the current record holders for highest Tc. However, three groups of researchers who performed measurements on the same cuprate material recently joined forces to prove that this view is inaccurate. Their work showed that another phase transition actually exists at a higher temperature in the cuprate phase diagram, below which electrons, instead of pairing up, organize themselves in a drastically different way.

243

Universal and phase-covariant superbroadcasting for mixed qubit states  

SciTech Connect (OSTI)

We describe a general framework to study covariant symmetric broadcasting maps for mixed qubit states. We explicitly derive the optimal N{yields}M superbroadcasting maps, achieving optimal purification of the single-site output copy, in both the universal and phase-covariant cases. We also study the bipartite entanglement properties of the superbroadcast states.

Buscemi, Francesco; D'Ariano, Giacomo Mauro; Macchiavello, Chiara; Perinotti, Paolo [QUIT Group, Dipartimento di Fisica 'A. Volta', Universita di Pavia, via Bassi 6, I-27100 Pavia (Italy)

2006-10-15T23:59:59.000Z

244

Quantum phase gate for optical qubits with cavity quantum optomechanics  

E-Print Network [OSTI]

We show that a cavity optomechanical system formed by a mechanical resonator simultaneously coupled to two modes of an optical cavity can be used for the implementation of quantum phase gate between optical qubits associated with the two intracavity modes. The scheme is realizable for sufficiently strong single-photon optomechanical coupling in the resolved sideband regime, and is robust against cavity losses.

Muhammad Asjad; Paolo Tombesi; David Vitali

2015-01-16T23:59:59.000Z

245

Controlling attosecond electron dynamics by phase-stabilized polarization gating  

E-Print Network [OSTI]

LETTERS Controlling attosecond electron dynamics by phase-stabilized polarization gating I. J. SOLA the signature of a single return of the electron wavepacket over a large range of energies. This temporally (low energy) and cut-off (high energy) harmonics, specific focusing conditions ensure that only

Loss, Daniel

246

Single-particle structure determination by correlations of snapshot X-ray diffraction patterns (CXIDB ID 20)  

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

This deposition includes the diffraction images generated by the paired polystyrene spheres in random orientations. These images were used to determine and phase the single particle diffraction volume from their autocorrelation functions.

Starodub, D.

247

Common non-Fermi liquid phases in quantum impurity physics  

Science Journals Connector (OSTI)

We study correlated quantum impurity models that undergo a local quantum phase transition (QPT) from a strong coupling, Fermi liquid phase to a non-Fermi liquid phase with a globally doubly degenerate ground state. Our aim is to establish what can be shown exactly about such “local moment” (LM) phases, of which the permanent (zero-field) local magnetization is a hallmark, and an order parameter for the QPT. A description of the zero-field LM phase is shown to require two distinct self-energies, which reflect the broken symmetry nature of the phase and together determine the single self-energy of standard field theory. Distinct Friedel sum rules for each phase are obtained, via a Luttinger theorem embodied in the vanishing of appropriate Luttinger integrals. By contrast, the standard Luttinger integral is nonzero in the LM phase but found to have universal magnitude. A range of spin susceptibilites are also considered, including that corresponding to the local order parameter, whose exact form is shown to be RPA-like, and to diverge as the QPT is approached. Particular attention is given to the pseudogap Anderson model, including the basic physical picture of the transition, the low-energy behavior of single-particle dynamics, the quantum critical point itself, and the rather subtle effect of an applied local field. A two-level impurity model that undergoes a QPT (“singlet-triplet”) to an underscreened LM phase is also considered, for which we derive on general grounds some key results for the zero-bias conductance in both phases.

David E. Logan; Adam P. Tucker; Martin R. Galpin

2014-08-28T23:59:59.000Z

248

Viscosity near phase transitions  

E-Print Network [OSTI]

Probably the most enticing observation in theoretical physics during the last decade was the discovery of the great amount of consequences obtained from the AdS/CFT conjecture put forward by Maldacena. In this work we review how this correspondence can be used to address hydrodynamic properties such as the viscosity of some strongly interacting systems. We also employ the Boltzmann equation for those systems closer to low-energy QCD, and argue that this kind of transport coefficients can be related to phase transitions, in particular the QGP/hadronic phase transition studied in heavy ion collisions.

Antonio Dobado; Felipe J. Llanes-Estrada; Juan M. Torres-Rincon

2010-09-30T23:59:59.000Z

249

Linear phase compressive filter  

DOE Patents [OSTI]

A phase linear filter for soliton suppression is in the form of a laddered series of stages of non-commensurate low pass filters with each low pass filter having a series coupled inductance (L) and a reverse biased, voltage dependent varactor diode, to ground which acts as a variable capacitance (C). L and C values are set to levels which correspond to a linear or conventional phase linear filter. Inductance is mapped directly from that of an equivalent nonlinear transmission line and capacitance is mapped from the linear case using a large signal equivalent of a nonlinear transmission line.

McEwan, Thomas E. (Livermore, CA)

1995-01-01T23:59:59.000Z

250

Single molecule measurements and molecular motors  

Science Journals Connector (OSTI)

...Hideyuki Okano and Atsushi Iriki Single molecule measurements and molecular motors...Suita, Osaka 565-0871, Japan Single molecule imaging and manipulation are...machines like molecular motors. The single molecule measurements allow a dynamic...

2008-01-01T23:59:59.000Z

251

SINGLE CELL PROTEIN | The Algae  

Science Journals Connector (OSTI)

Abstract Algae, as source of single-cell protein (SCP), is a term that refers to either microscopic single-cell true algae or prokaryotic cyanobacteria, and their growth is based on the use of carbon dioxide and light energy (autotrophic growth). In contrast with other SCP-producing organisms, algae are grown in many cases by processes resembling traditional agriculture, because they depend on large areas and sunlight radiation; on the other hand, modern production techniques include growth inside photobioreactors. Moreover, macroscopic algae are used widely as source of food, but they hardly can fit the SCP definition because of their multicellular nature and low protein content.

M. García-Garibay; L. Gómez-Ruiz; A.E. Cruz-Guerrero; E. Bárzana

2014-01-01T23:59:59.000Z

252

Single particle-induced latchup  

SciTech Connect (OSTI)

This paper presents an up-to-date overview of the single-event latchup (SEL) hard failure mode encountered in electronic device applications involving heavy ion environment. This phenomenon is specific to CMOS technology. Single-event latchup is discussed after a short description of the effects induced by the interaction of a heavy ion with silicon. Understanding these effects is necessary to understand the different failures. This paper includes a description of the latchup phenomenon and the different triggering modes, reviews of models and hardening solutions, and finally presents new developments in simulation approaches.

Bruguier, G.; Palau, J.M. [Univ. Montpellier II (France). Centre d`Electronique de Montpellier] [Univ. Montpellier II (France). Centre d`Electronique de Montpellier

1996-04-01T23:59:59.000Z

253

Berry Phase Quantum Thermometer  

E-Print Network [OSTI]

We show how Berry phase can be used to construct an ultra-high precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations.

Martin-Martinez, E; Mann, R B; Fuentes, I

2011-01-01T23:59:59.000Z

254

Berry Phase Quantum Thermometer  

E-Print Network [OSTI]

We show how Berry phase can be used to construct an ultra-high precision quantum thermometer. An important advantage of our scheme is that there is no need for the thermometer to acquire thermal equilibrium with the sample. This reduces measurement times and avoids precision limitations.

E. Martin-Martinez; A. Dragan; R. B. Mann; I. Fuentes

2013-05-28T23:59:59.000Z

255

Single Molecule Analysis Research Tool (SMART): An Integrated Approach for Analyzing Single Molecule Data  

E-Print Network [OSTI]

Single Molecule Analysis Research Tool (SMART): An Integrated Approach for Analyzing Single, Stanford University, Stanford, California, United States of America Abstract Single molecule studies have approach for analyzing these data in the freely available software package SMART: Single Molecule Analysis

Herschlag, Dan

256

Phase-stabilized 167 MHz Repetition Frequency Carbon Nanotube Fiber Laser Frequency Comb  

E-Print Network [OSTI]

Phase-stabilized 167 MHz Repetition Frequency Carbon Nanotube Fiber Laser Frequency Comb Jinkang [2, 3]. Mode-locked fiber lasers using single-walled carbon nanotubes as a saturable absorber have-referenced frequency comb from a fiber laser passively modelocked by single walled carbon nanotubes. The carbon

Washburn, Brian

257

Shawano Municipal Utilities | Open Energy Information  

Open Energy Info (EERE)

Shawano Municipal Utilities Shawano Municipal Utilities Place Wisconsin Utility Id 17011 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Field Lighting Service Lighting General Single Phase Commercial General Single Phase TOD Commercial General Single Phase TOD 2 Commercial General Single Phase TOD 3 Commercial General Three Phase Commercial General Three Phase TOD Commercial General Three Phase TOD 2 Commercial General Three Phase TOD 3 Commercial Industrial Time-of-day Industrial Interdepartmental Commercial

258

Quantitative biology of single neurons  

Science Journals Connector (OSTI)

...micropipette of the soma (b) and dendrites (c). Figure-4. Live single-cell mRNA translation...cell.2008.10.028 ) 117 Sugino, K. , C. M. Hempel, M. N. Miller, A. M. Hattox, P. Shapiro, C. Wu, Z. J. Huang, and S. B. Nelson...

2012-01-01T23:59:59.000Z

259

Single element laser beam shaper  

DOE Patents [OSTI]

A single lens laser beam shaper for converting laser beams from any spatial profile to a flat-top or uniform spatial profile. The laser beam shaper includes a lens having two aspheric surfaces. The beam shaper significantly simplifies the overall structure in comparison with conventional 2-element systems and therefore provides great ease in alignment and reduction of cost.

Zhang, Shukui (Yorktown, VA); Michelle D. Shinn (Newport News, VA)

2005-09-13T23:59:59.000Z

260

ANALYSIS OF DETONATION STATES WHEN SHOCKING TWO-PHASE REACTIVE SOLIDS*  

E-Print Network [OSTI]

' ANALYSIS OF DETONATION STATES WHEN SHOCKING TWO-PHASE REACTIVE SOLIDS* J. M. Powers, D. S the hypothesis that observed deviations from Chapman-Jouguet detonation states inporous solid propellants for a minimum detonation wave speed analogous to a Chapman-Jouguet detonation for a single phase is given

Note: This page contains sample records for the topic "time-of-day single phase" 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

Title: Decomposition of ethanol and dimethyl-ether during CVD synthesis of single-walled carbon nanotubes  

E-Print Network [OSTI]

of ethanol and dimethyl-ether during CVD synthesis of single-walled carbon nanotubes Author list: Bo Hou (single-walled carbon nanotubes) was investigated. Gas-phase thermal decomposition of ethanol and DME ethanol and DME decomposition, confirming expected reaction trends and primary byproducts. Peak

Maruyama, Shigeo

262

Phase 2 microwave concrete decontamination results  

SciTech Connect (OSTI)

The authors report on the results of the second phase of a four-phase program at Oak Ridge National Laboratory to develop a system to decontaminate concrete using microwave energy. The microwave energy is directed at the concrete surface through the use of an optimized wave guide antenna, or applicator, and this energy rapidly heats the free water present in the interstitial spaces of the concrete matrix. The resulting steam pressure causes the surface to burst in much the same way popcorn pops in a home microwave oven. Each steam explosion removes several square centimeters of concrete surface that are collected by a highly integrated wave guide and vacuum system. The authors call this process the microwave concrete decontamination, or MCD, process. In the first phase of the program the principle of microwaves concrete removal concrete surfaces was demonstrated. In these experiments, concrete slabs were placed on a translator and moved beneath a stationary microwave system. The second phase demonstrated the ability to mobilize the technology to remove the surfaces from concrete floors. Area and volume concrete removal rates of 10.4 cm{sup 2}/s and 4.9 cm{sup 3}/S, respectively, at 18 GHz were demonstrated. These rates are more than double those obtained in Phase 1 of the program. Deeper contamination can be removed by using a longer residence time under the applicator to create multiple explosions in the same area or by taking multiple passes over previously removed areas. Both techniques have been successfully demonstrated. Small test sections of painted and oil-soaked concrete have also been removed in a single pass. Concrete with embedded metal anchors on the surface has also been removed, although with some increased variability of removal depth. Microwave leakage should not pose any operational hazard to personnel, since the observed leakage was much less than the regulatory standard.

White, T.L.; Foster, D. Jr.; Wilson, C.T.; Schaich, C.R.

1995-04-01T23:59:59.000Z

263

Fundamental Study of Single Biomass Particle Combustion  

E-Print Network [OSTI]

Fundamental Study of Single Biomass Particle Combustion Maryam Momeni #12;Fundamental Study of Single Biomass Particle Combustion Maryam Momeni Dissertation submitted to the Faculty of Engineering Fundamental Study of Single Biomass Particle Combustion This thesis is a comprehensive study of single biomass

Berning, Torsten

264

NETL: Carbon Storage - Regional Partnership Validation Phase (Phase II)  

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

Validation Phase (Phase II) Projects Validation Phase (Phase II) Projects The Regional Carbon Sequestration Partnerships' (RCSP) Validation Phase focuses on validating the most promising regional opportunities to deploy CCS technologies by building upon the accomplishments of the Characterization Phase. Two different CO2 storage approaches are being pursued in this phase: geologic and terrestrial carbon storage. The Validation Phase includes 20 geologic and 11 terrestrial CO2 storage projects. Efforts are being conducted to: Validate and refine current reservoir simulations for CO2 storage projects. Collect physical data to confirm CO2 storage potential and injectivity estimates. Demonstrate the effectiveness of monitoring, verification, and accounting (MVA) technologies. Develop guidelines for well completion, operations, and abandonment.

265

Single crystal growth and superconductivity of Ca(Fe1-xCox)2As2  

SciTech Connect (OSTI)

We report the single crystal growth of Ca(Fe1-xCox)2As2 (0 <= x <= 0.082) from Sn flux. The temperature-composition phase diagram is mapped out based on the magnetic susceptibility and electrical transport measurements. Phase diagram of Ca(Fe1-xCox)2As2 is qualitatively different from those of Sr and Ba, it could be due to both the charge doping and structural tuning effects associated with Co substitution.

Hu, Rongwei; Ran, Sheng; Budko, Serguei; Straszheim, Warren E.; Canfield, Paul C.

2012-05-18T23:59:59.000Z

266

Single molecule pulling with large time steps  

Science Journals Connector (OSTI)

Recently, we presented a generalization of the Jarzynski nonequilibrium work theorem for phase space mappings. The formalism shows that one can determine free energy differences from approximate trajectories obtained from molecular dynamics simulations in which very large time steps are used. In this work we test the method by simulating the force-induced unfolding of a deca-alanine helix in vacuum. The excellent agreement between results obtained with a small, conservative time step of 0.5fs and results obtained with a time step of 3.2fs (i.e., close to the stability limit) indicates that the large-time-step approach is practical for such complex biomolecules. We further adapt the method of Hummer and Szabo for the simulation of single molecule force spectroscopy experiments to the large-time-step method. While trajectories generated with large steps are approximate and may be unphysical—in the simulations presented here we observe a violation of the equipartition theorem—the computed free energies are exact in principle. In terms of efficiency, the optimum time step for the unfolding simulations lies in the range 1–3fs.

Harald Oberhofer; Christoph Dellago; Stefan Boresch

2007-06-06T23:59:59.000Z

267

Theory of Nucleation in Phase-separating Nanoparticles  

E-Print Network [OSTI]

The basic physics of nucleation in solid \\hl{single-crystal} nanoparticles is revealed by a phase-field theory that includes surface energy, chemical reactions and coherency strain. In contrast to binary fluids, which form arbitrary contact angles at surfaces, complete "wetting" by one phase is favored at binary solid surfaces. Nucleation occurs when surface wetting becomes unstable, as the chemical energy gain (scaling with area) overcomes the elastic energy penalty (scaling with volume). The nucleation barrier thus decreases with the area-to-volume ratio and vanishes below a critical size, and nanoparticles tend to transform in order of increasing size, leaving the smallest particles homogeneous (in the phase of lowest surface energy). The model is used to simulate phase separation in realistic nanoparticle geometries for \\ce{Li_XFePO4}, a popular cathode material for Li-ion batteries, and collapses disparate experimental data for the nucleation barrier, with no adjustable parameters. Beyond energy storage,...

Cogswell, Daniel A

2013-01-01T23:59:59.000Z

268

Magnetic field-induced phase transformation and variant reorientation in Ni2MnGa and NiMnCoIn magnetic shape memory alloys  

E-Print Network [OSTI]

The purpose of this work is to reveal the governing mechanisms responsible for the magnetic field-induced i) martensite reorientation in Ni2MnGa single crystals, ii) stress-assisted phase transformation in Ni2MnGa single crystals and iii) phase...

Karaca, Haluk Ersin

2009-05-15T23:59:59.000Z

269

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

Carbon Nanotubes into Single-Molecule Circuitry Brett R.to a single binding site, single molecule precision can beto directly transduce single-molecule interactions such as

Collins, Philip G

2007-01-01T23:59:59.000Z

270

Microcellular foams via phase separation  

SciTech Connect (OSTI)

A study of wide variety of processes for making plastic foams shows that phase separation processes for polymers from solutions offers the most viable methods for obtaining rigid plastic foams which met the physical requirements for fusion target designs. Four general phase separation methods have been shown to give polymer foams with densities less than 0.1 g/cm/sup 3/ and cell sizes of 30..mu..m or less. These methods involve the utilization of non-solvent, chemical or thermal cooling processes to achieve a controlled phase separation wherein either two distinct phases are obtained where the polymer phase is a continuous phase or two bicontinuous phases are obtained where both the polymer and solvent are interpenetrating, continuous, labyrinthine phases. Subsequent removal of the solvent gives the final foam structure.

Young, A.T.

1985-01-01T23:59:59.000Z

271

Phase 1 -- 2  

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

2 2 Revised 8/7/02 " "Sample Statement of Work - Standard Service Offerings for Contractor-Identified Project" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "2-1","DO RFP Development - Direct Support","Based upon interviews Agency/site staff and consultation support, FEMP Services will prepare DO RFP for Agency/site. FEMP Services will provide onsite or telecon review of draft DO RFP with agency staff. FEMP Services will prepare 2nd draft DO RFP based on telecon and written agency review comments and recommendations. ","Draft DO RFP Document. On-site review of draft DO RFP.

272

Neutron phase echo  

Science Journals Connector (OSTI)

The coherent overlap of the waves traversing the two legs of a perfect-crystal neutron interferometer is altered by a material with a neutron-nuclear optical potential. The fringe visibility is limited by the longitudinal coherence length. The loss of interference contrast caused by a slab of material of positive optical potential can be restored by placing another slab of material with a negative optical potential in the same leg of the interferometer. This paper describes the observation and detailed characterization of this quantum-mechanical phenomenon, which we call the phase-echo effect.

R. Clothier; H. Kaiser; S. A. Werner; H. Rauch; H. Wölwitsch

1991-11-01T23:59:59.000Z

273

Phase 1 --2  

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

2 2 Rev 4-01-05 " "Statement of Work - Standard Service Offerings for Contractor-Identified Project at (insert project site)" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "2-1","DO RFP Development - Direct Support","Based upon interviews Agency/site staff and consultation support, FEMP Services will prepare DO RFP for Agency/site. FEMP Services will provide onsite or telecon review of draft DO RFP with agency staff. FEMP Services will prepare 2nd draft DO RFP based on telecon and written agency review comments and recommendations. ","Draft DO RFP Document. On-site review of draft DO RFP.

274

Single-molecule kinetic energy of condensed normal deuterium  

Science Journals Connector (OSTI)

Inelastic scattering of 300-meV neutrons allows the study of the liquid (T=20 and 30 K, saturated vapor pressure) and solid (T=4.2 K, saturated vapor pressure) phases of the normal deuterium mixture (2/3 o-D2+1/3 p-D2) in the region of momentum transfer where a single-molecule response is expected. The spectra are analyzed within the impulse approximation and assuming Gaussian momentum distributions for the translation of the molecules. For the solid, the estimated value of the single-molecule average kinetic energy does not compare unfavorably with those obtained scaling experimental results in parahydrogen solids. In the liquid state, substantial departures seem to exist from the classical liquid behavior, even if up to second-order quantum corrections are taken into account. © 1996 The American Physical Society.

F. J. Mompeán; M. García-Hernández; F. J. Bermejo; S. M. Bennington

1996-07-01T23:59:59.000Z

275

Deterministic single soliton generation and compression in microring resonators avoiding the chaotic region  

E-Print Network [OSTI]

A path within the parameter space of phase detuning and pump power is demonstrated in order to obtain a single cavity soliton (CS) with certainty in SiN microring resonators in the anomalous dispersion regime. Once the single CS state is reached, it is possible to continue a path to compress it, broadening the corresponding single FSR frequency Kerr comb. This behavior is first obtained by identifying the regions in the parameter space via numerical simulations of the Lugiato-Lefever equation (LLE), and second, defining a path from the stable modulation instability (SMI) region to the stable cavity solitons (SCS) region avoiding the chaotic and unstable regions.

Jaramillo-Villegas, Jose A; Wang, Pei-Hsun; Leaird, Daniel E; Weiner, Andrew M

2015-01-01T23:59:59.000Z

276

Property:Project Phase | Open Energy Information  

Open Energy Info (EERE)

Phase Phase Jump to: navigation, search Property Name Project Phase Property Type Text This is a property of type String. Pages using the property "Project Phase" Showing 25 pages using this property. (previous 25) (next 25) M MHK Projects/40MW Lewis project + Phase 2 + MHK Projects/ADM 3 + Phase ? + MHK Projects/ADM 4 + Phase ? + MHK Projects/ADM 5 + Phase 2 + MHK Projects/AW Energy EMEC + Phase 3 + MHK Projects/AWS II + Phase 1 + MHK Projects/Admirality Inlet Tidal Energy Project + Phase 1 + MHK Projects/Agucadoura + Phase 3 + MHK Projects/Alaska 1 + Phase 0 + MHK Projects/Alaska 13 + Phase ? + MHK Projects/Alaska 17 + Phase 0 + MHK Projects/Alaska 18 + Phase 0 + MHK Projects/Alaska 24 + Phase 0 + MHK Projects/Alaska 25 + Phase 0 + MHK Projects/Alaska 28 + Phase 0 +

277

Single-Bubble Sonoluminescence as Dicke Superradiance at Finite Temperature  

E-Print Network [OSTI]

Sonoluminescence is a process in which a strong sound field is used to produce light in liquids. We explain sonoluminescence as a phase transition from ordinary fluorescence to a superradiant phase. We consider a spin-boson model composed of a single bosonic mode and an ensemble of $N$ identical two-level atoms. We assume that the whole system is in thermal equilibrium with a reservoir at temperature $\\beta^{-1}$. We show that, in a ultrastrong-coupling regime, between the two-level atoms and the electromagnetic field it is possible to have a cooperative interaction of the molecules of the gas in the interior of the bubble with the field, generating sonoluminescence.

M. Aparicio Alcalde; Hernando Quevedo; Nami Fux Svaiter

2014-08-18T23:59:59.000Z

278

How Does a Single Pt Nanocatalyst Behave in Two Different Reactions? A Single-Molecule Study  

E-Print Network [OSTI]

How Does a Single Pt Nanocatalyst Behave in Two Different Reactions? A Single-Molecule Study Kyu ABSTRACT: Using single-molecule microscopy of fluoro- genic reactions we studied Pt nanoparticle catalysis. KEYWORDS: Single-particle catalysis, platinum nanoparticles, single-molecule imaging, deacetylation

Chen, Peng

279

Theory of single photon on demand from a single molecule sourcew and Eli Barkaib  

E-Print Network [OSTI]

Theory of single photon on demand from a single molecule sourcew Yong Hea and Eli Barkaib Received for the description of cryogenic temperature single molecules, and that experiments were conducted very close single molecules,7­9 single quantum dots,10­12 or nitrogen vacancy color centers,13 are nowadays

Barkai, Eli

280

Phase 1 -- 4  

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

4" 4" "Statement of Work - Optional Service Offerings for Contractor-Identified Project" "Task #","Task Title","Work Scope","Deliverable","Agency Requirements" " " "Phase Two - Initial Project Development" "Replace Std Task# 2-1","DO RFP Development - On Site Consultation","FEMP Services will provide technical consultation resources at the Agency's site to assist in the integration of the site's requirements into the DO RFP template.","Oral Comments","Agency staff will draft DO RFP. Provide copies to FEMP Services staff for review." "Phase Three - Negotiations and Award" "Replace Std Task# 3-4","Final Proposal Review - Direct Support","FEMP Services will provide direct technical resources to review final proposal. Review will include assessment of ESPC-unique data such as markups, performance period expenses, and financing interest rates. FEMP Services will assure that price schedules have been filled out correctly. ESCO specified equipment will be evaluated for its appropriateness and installation expense (labor and material). FEMP Services will coordinate and assemble agency and FEMP Services questions and issues for Agency CO to be presented to ESCO for discussions and negotiations. ","Telecon Advice and Written comments and recommendations","Agency will provide FEMP Services staff copies of final proposal with emphasis on selected equipment compatibility with agency performance requirements. Agency shall ensure applicable acquisition team members review final proposal. Agency will generate site questions or issues prior to scheduled telecons with FEMP Services staff. Agency will review questions and issues for ESCO discussions. Agency CO will submit questions and issues to ESCO."

Note: This page contains sample records for the topic "time-of-day single phase" 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

Effective phase locking of an array of lasers  

SciTech Connect (OSTI)

Phase locking of a 61-tube 8.5-mm-period honeycomb array of 100-ms-pulsed CO2 waveguide lasers (Glova et al., 1985) is achieved experimentally by varying the distance between an external coupling mirror and the laser aperture. The theoretical basis of the technique is explained, and the experimental results are presented graphically. Complete phase locking with lasing at single P and R-branch rotational transitions is obtained, in the 10-micron region at mirror distance 4.5-6 m and in the 9-micron region at mirror distance 6-7.0 m. 7 references.

Antiukhov, V.V.; Glova, A.F.; Kachurin, O.R.; Lebedev, F.V.; Likhanskii, V.V.

1986-07-01T23:59:59.000Z

282

Single crystal to single crystal transition in (10, 3)-d framework with pyrazine-2-carboxylate ligand: Synthesis, structures and magnetism  

SciTech Connect (OSTI)

Assembling of pyrazine-2-carboxylate (Pzc) acid with nickel chlorine under solvothermal condition with MeOH as solvent gave a porous complex 1 {l_brace}[Ni(Pzc)ClH{sub 2}O]{center_dot}MeOH{r_brace}{sub n} with 1D channels. In 1 the ligands and metal ions are connected by three of each other and a rare (10,3)-d topology net is gained. The MeOH molecules filled in the 1D channels as guests. It is interesting that 1 undergoes a single-crystal-to-single-crystal transformation to another complex 2 when the guest MeOH molecules in the channels are exchanged by water molecules. Magnetic study indicates anti-ferromagnetic couplings exist in the two complexes and the guest exchange in the complex has little influence on the magnetism. - Graphical abstract: A porous complex 1 with rare (10,3)-d net was gained, and 1 underwent a single-crystal-to-single-crystal transformation to another phase 2. Highlights: Black-Right-Pointing-Pointer New (10,3)-d net was obtained with pyrazine-2-carboxylate ligands as a triangular node. Black-Right-Pointing-Pointer The complex 1 has a 1D channel filled with methanol molecules as guests. Black-Right-Pointing-Pointer 1 could undergo SCSC structural transition to 2 after guests exchanged. Black-Right-Pointing-Pointer Antiferromagnetic interactions were found in 1 and 2.

Yang, Qian [School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384 (China) [School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384 (China); Department of Chemistry, Tianjin Key Lab on Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071 (China); Zhao, Jiong-Peng, E-mail: horryzhao@yahoo.com [School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384 (China)] [School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384 (China); Liu, Zhong-Yi [College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387 (China)] [College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387 (China)

2012-12-15T23:59:59.000Z

283

Two-phase air-water stratified flow measurement using ultrasonic techniques  

SciTech Connect (OSTI)

In this paper, a time resolved ultrasound system was developed for investigating two-phase air-water stratified flow. The hardware of the system includes a pulsed wave transducer, a pulser/receiver, and a digital oscilloscope. The time domain cross correlation method is used to calculate the velocity profile along ultrasonic beam. The system is able to provide velocities with spatial resolution of around 1mm and the temporal resolution of 200?s. Experiments were carried out on single phase water flow and two-phase air-water stratified flow. For single phase water flow, the flow rates from ultrasound system were compared with those from electromagnetic flow (EM) meter, which showed good agreement. Then, the experiments were conducted on two-phase air-water stratified flow and the results were given. Compared with liquid height measurement from conductance probe, it indicated that the measured velocities were explainable.

Fan, Shiwei; Yan, Tinghu; Yeung, Hoi [School of Engineering, Cranfield University, Cranfield, Bedfordshire MK43 0AL (United Kingdom)

2014-04-11T23:59:59.000Z

284

Better Randomness with Single Photons  

E-Print Network [OSTI]

Randomness is one of the most important resources in modern information science, since encryption founds upon the trust in random numbers. Since it is impossible to prove if an existing random bit string is truly random, it is relevant that they be generated in a trust worthy process. This requires specialized hardware for random numbers, for example a die or a tossed coin. But when all input parameters are known, their outcome might still be predicted. A quantum mechanical superposition allows for provably true random bit generation. In the past decade many quantum random number generators (QRNGs) were realized. A photonic implementation is described as a photon which impinges on a beam splitter, but such a protocol is rarely realized with non-classical light or anti-bunched single photons. Instead, laser sources or light emitting diodes are used. Here we analyze the difference in generating a true random bit string with a laser and with anti-bunched light. We show that a single photon source provides more r...

Oberreiter, Lukas

2014-01-01T23:59:59.000Z

285

Single-Molecule Stochastic Resonance  

Science Journals Connector (OSTI)

Stochastic resonance (SR) is a well-known phenomenon in dynamical systems. It consists of the amplification and optimization of the response of a system assisted by stochastic (random or probabilistic) noise. Here we carry out the first experimental study of SR in single DNA hairpins which exhibit cooperatively transitions from folded to unfolded configurations under the action of an oscillating mechanical force applied with optical tweezers. By varying the frequency of the force oscillation, we investigate the folding and unfolding kinetics of DNA hairpins in a periodically driven bistable free-energy potential. We measure several SR quantifiers under varied conditions of the experimental setup such as trap stiffness and length of the molecular handles used for single-molecule manipulation. We find that a good quantifier of the SR is the signal-to-noise ratio (SNR) of the spectral density of measured fluctuations in molecular extension of the DNA hairpins. The frequency dependence of the SNR exhibits a peak at a frequency value given by the resonance-matching condition. Finally, we carry out experiments on short hairpins that show how SR might be useful for enhancing the detection of conformational molecular transitions of low SNR.

K. Hayashi; S. de Lorenzo; M. Manosas; J. M. Huguet; F. Ritort

2012-08-24T23:59:59.000Z

286

PARS II Phased Project Reporting Process, V-2013-03-14 Page 1  

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

Phased Project Reporting Process, V-2013-03-14 Page 1 Phased Project Reporting Process, V-2013-03-14 Page 1 PARS II Process Document PROJECT PHASING (MULTIPLE CD-2 FROM SINGLE CD-1) PURPOSE The purpose of this document is to describe the process of entering, managing, and reporting projects in PARS II that adopted Phasing approach. SCOPE This process applies to projects that are managed as a larger program through CD1 but are executed in phases with parts of the projects reaching CD2 approvals earlier than the main project. PROCESS The main goal of the process is to ensure that as new projects are created for various phases of the original CD1 program, DOE portfolio is not overstated in portfolio reports and to ensure that linking is retained in PARS II between original CD1 program and resulting CD2 project phases.

287

Phase equilibrium studies  

SciTech Connect (OSTI)

A phase equilibrium model has been developed for the SRC-I process, as well as the other coal liquefaction processes. It is applicable to both vapor/liquid and liquid/liquid equilibria; it also provides an approximate but adequate description of aqueous mixtures where the volatile electrolyte components dissociate to form ionic species. This report completes the description of the model presented in an earlier report (Mathias and Stein, 1983a). Comparisons of the model to previously published data on coal-fluid mixtures are presented. Further, a preliminary analysis of new data on SRC-I coal fluids is presented. Finally, the current capabilities and deficiencies of the model are discussed. 25 references, 17 figures, 30 tables.

Mathias, P.M.; Stein, F.P.

1983-09-01T23:59:59.000Z

288

Commensurate phases, incommensurate phases and the devil’s staircase  

E-Print Network [OSTI]

Modulated structures with periods which are incommensurable (or high-order com-mensurable) with the basic lattice are quite common in condensed-matter physics. The structure may be another lattice, a periodic lattice distortion, a helical or sinusoidal magnetic structure, or a charge density wave in one, two or three dimensions. This review surveys recent theories on the transition between commensurate (C) and incommensurate (I) phases, and on the properties of the ‘incommensurate ’ phase. The predictions of theories will be compared with experiments. The CI transition is usually described in terms of wall, or soliton, formation. The nature of the transition and the structure of the I phase are quite different in two and three dimensions. In three dimensions the I phase seems to consist of an infinity of high-order locked C phases, which may or may not be separated by an infinity of truly incommensurate phases. This behaviour is known as the ‘devil’s staircase’. In two dimensions the incommensurate phase (at T # 0) is a ‘floating ’ phase without complete long-range order, and it does not ‘lock-in ’ at high-order commensurate phases. Phase diagrams are determined by the stability of two types of ‘topological ’ defects: walls, which destabilise the C phase with respect to I phases, and dislocations or vortices which generate paramagnetic or fluid phases. A consequence of this competition is that for sufficiently low order of commensurability the C and I phases are separated by a fluid phase. The properties of modulated systems can be studied by iterating certain area-preserving two-dimensional maps. Very recent studies indicate that, in addition to C and I phases, there are chaotic structures which are at least metastable. The chaotic regimes separate C and I phases and may be described as randomly pinned solitons. The relevance of the chaotic regimes to adsorbed monolayers, pinning of charge density waves, Peierls transitions and spin glasses is briefly discussed. This review was received in July 1981.

Per Bak

289

Photon tunnelling microscopy of polyethylene single crystals  

E-Print Network [OSTI]

Photon tunnelling microscopy of polyethylene single crystals Mohan Srinivasarao* and Richard S:photon tunnellingmicroscopy;single crystals; polyethylene) INTRODUCTION The study of morphology of polymers is an area

Srinivasarao, Mohan

290

Single-Molecule Imaging in Live Cells  

Science Journals Connector (OSTI)

This chapter provides a comprehensive overview of how single-molecule imaging is achieved in live cells. The ... with a particular focus on how they influence single-molecule imaging in live cells. A few fluoresc...

Jie Xiao

2009-01-01T23:59:59.000Z

291

Martensitic transformation in NiMnGa single crystals: Numerical simulation and experiments  

E-Print Network [OSTI]

is based on a detailed description of the stored energy. Furthermore, the energy dissipation due to phase microstructures in single crystals and the related energy dissipation can be predicted to some extent for SMAs. Let us name, without any ambitions for completeness, the models of Artemev et al. (2000), Falk

Arndt, Marcel

292

Single tensionless transition in the Laplacian roughening model Juan Jess Ruiz-Lorenzo,1  

E-Print Network [OSTI]

Single tensionless transition in the Laplacian roughening model Juan JesĂşs Ruiz-Lorenzo,1 Esteban Laplacian roughening dLr model, originally introduced as the simplest one accommodating the hexatic phase in two-dimensional melting. The dLr model is also relevant to surface roughening in molecular beam

Cuerno, Rodolfo

293

Self-Assembly in Chains, Rings, and Branches: A Single Component System with Two Critical Points  

E-Print Network [OSTI]

Self-Assembly in Chains, Rings, and Branches: A Single Component System with Two Critical Points October 2013) We study the interplay between phase separation and self-assembly in chains, rings. The emergence of the lower critical point is caused by the self-assembly of rings taking place in the vapor

Sciortino, Francesco

294

The single-electrode Peltier heats of Li-Al alloy electrodes in LiCl-KCl eutectic system  

SciTech Connect (OSTI)

This paper presents the single-electrode Peltier heat of cathodic (or anodic) reaction of Li-Al alloy electrode in a coexisting phase state, or an intermetallic compound phase state estimated by thermoelectric-power measurement. The thermoelectric-power measurements of Li-Al alloys in various coexisting phase states were carried out with both potentiometric and potential-sweep methods in the LiCl-KCl eutectic system between 673 and 843 K. The values of the thermoelectric power of Li-Al alloys calculated by using thermodynamic literature data were in good agreement with those obtained by experiment. The single-electrode Peltier heat changes drastically with change of its phase state, and it was found that the formation reactions of [beta] (Li[sub 0.5]Al[sub 0.5]) and [gamma] (Li[sub 0.6]Al[sub 0.4]) phases are exothermic, and those of liquid phase from [beta] and [gamma] phase are endothermic. The single-electrode Peltier heat for the cathodic formation reaction of Li-Al alloy in intermetallic compound [gamma] phase is estimated to be exothermic by using the measured values of thermoelectric powers of Li-Al alloys in ([beta] + [gamma]) and ([gamma] + liq.) regions.

Amezawa, Koji; Ito, Yasuhiko; Tomii, Yoichi (Kyoto Univ. (Japan))

1994-11-01T23:59:59.000Z

295

12 - Single-charge transport in graphene  

Science Journals Connector (OSTI)

Abstract: The single-charge tunneling behavior in graphene devices is reviewed and the Coulomb blockade phenomena observed in graphene constrictions, patterned single-electron transistors and graphene nanoribbons are compared with those observed in the conventional single-electron transistors with metallic islands. The phenomena that occur when compressible quantum dots are formed in graphene in the quantum Hall regime, including mesoscopic conductance fluctuations resulting from single-charge tunneling into/out of the quantum dots, are discussed.

D.S. Lee

2014-01-01T23:59:59.000Z

296

Single Organic Microtwist with Tunable Pitch  

Science Journals Connector (OSTI)

Single Organic Microtwist with Tunable Pitch ... Initially, some short twists with lengths of only several pitches are formed. ...

Hai-Bo Chen; Yan Zhou; Jie Yin; Jing Yan; Yuguo Ma; Lei Wang; Yong Cao; Jian Wang; Jian Pei

2009-04-17T23:59:59.000Z

297

Single-molecule Fluorescence Spectroelectrochemistry of Cresyl...  

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

molecule Fluorescence Spectroelectrochemistry of Cresyl Violet. Single-molecule Fluorescence Spectroelectrochemistry of Cresyl Violet. Abstract: We coupled scanning fluorescence...

298

PHOTOCATALYTIC AND PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS  

E-Print Network [OSTI]

HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS F.HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS

Wagner, F.T.

2012-01-01T23:59:59.000Z

299

Phase change materials for limiting temperature rise in building integrated photovoltaics  

Science Journals Connector (OSTI)

Elevated operating temperatures reduce the solar to electrical conversion efficiency of photovoltaic devices. This paper presents an experimental evaluation of phase change materials for thermal management of photovoltaic devices. Two particular phase change materials were used to moderate the temperature rise of photovoltaics. The thermal performance of different internal fin arrangements for improving bulk PCM thermal conductivity are presented. Using RT25 with internal fins, the temperature rise of the PV/PCM system can be reduced by more than 30 °C when compared with the datum of a single flat aluminium plate during phase change. Phase change materials are shown to be an effective means of limiting temperature rise in photovoltaic devices.

M.J. Huang; P.C. Eames; B. Norton

2006-01-01T23:59:59.000Z

300

Local Wettability Reversal during Steady-State Two-Phase Flow in Porous Media  

E-Print Network [OSTI]

We study the effect of local wettability reversal on remobilizing immobile fluid clusters in steady-state two-phase flow in porous media. We consider a two dimensional network model for porous medium and introduce a wettability alteration mechanism. A qualitative change in the steady state flow patterns, destabilizing the percolating and trapped clusters, is observed as the system wettability is varied. When capillary forces are strong a finite wettability alteration is necessary to move the system from single-phase to two-phase flow regime. For the case of both phases being mobile we find a linear relationship between fractional flow and wettability alteration.

Sinha, Santanu; Řdegĺrden, Torgeir Bryge; Skjetne, Erik; Hansen, Alex; 10.1103/PhysRevE.84.037303

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Nanoscale Calorimetry of Isolated Polyethylene Single Crystals  

E-Print Network [OSTI]

Nanoscale Calorimetry of Isolated Polyethylene Single Crystals A. T. KWAN, M. YU. EFREMOV, E. A-film differential scanning calorimetry to investigate the melt- ing of isolated polyethylene single crystals of lamellar single crystals of polyethylene (PE). We obtain thickness, diffraction, and calorimetry data

Allen, Leslie H.

302

Single molecule spectroscopy of tetrahedral oligophenylenevinylene molecules  

E-Print Network [OSTI]

Single molecule spectroscopy of tetrahedral oligophenylenevinylene molecules Melissa A. Summers form 17 July 2002 Abstract We probe the fluorescence from single molecules of a new class molecules and compare these signals with the fluorescence from single arm molecules. Our results show

Buratto, Steve

303

Ultrafast terahertz-induced response of GeSbTe phase-change materials Michael J. Shu,1,2,a)  

E-Print Network [OSTI]

Ultrafast terahertz-induced response of GeSbTe phase-change materials Michael J. Shu,1,2,a) Peter-optically, pumping with single-cycle terahertz pulses as a means of biasing phase-change materials on a sub of these materials is important for predicting the field-driven heating and phase-change behavior. However

304

Nonlinear Dynamics of Single Bunch Instability  

SciTech Connect (OSTI)

A nonlinear equation is derived that governs the evolution of the amplitude of unstable oscillations with account of quantum diffusion effects due to the synchrotron radiation. Numerical solutions to this equation predict a variety of possible scenarios of nonlinear evolution of the instability some of which are in good qualitative agreement with experimental observations. Microwave single bunch instability in circular accelerators has been observed in many machines. The instability usually arises when the number of particles in the bunch exceeds some critical value, Nc, which varies depending on the parameters of the accelerating regime. Recent observations on the SLC damping rings at SLAC with a new low-impedance vacuum chamber revealed new interesting features of the instability. In some cases, after initial exponential growth, the instability eventually saturated at a level that remained constant through the accumulation cycle. In other regimes, relaxation-type oscillations were measured in nonlinear phase of the instability. In many cases, the instability was characterized by a frequency close to the second harmonic of the synchrotron oscillations. Several attempts have been made to address the nonlinear stage of the instability based on either computer simulations or some specific assumptions regarding the structure of the unstable mode. An attempt of a more general consideration of the problem is carried out in this paper. We adopt an approach recently developed in plasma physics for analysis of nonlinear behavior of weakly unstable modes in dynamic systems. Assuming that the growth rate of the instability is much smaller than its frequency, we find a time dependent solution to Vlasov equation and derive an equation for the complex amplitude of the oscillations valid in the nonlinear regime. Numerical solutions to this equation predict a variety of possible scenarios of nonlinear evolution of the instability some of which are in good qualitative agreement with experimental observations.

Stupakov, G.V.; /SLAC; Breizman, B.N.; Pekker, M.S.; /Texas U.

2011-09-09T23:59:59.000Z

305

The Noncommutative Anandan's Quantum Phase  

E-Print Network [OSTI]

In this work we study the noncommutative nonrelativistic quantum dynamics of a neutral particle, that possesses permanent magnetic and electric dipole momenta, in the presence of an electric and magnetic fields. We use the Foldy-Wouthuysen transformation of the Dirac spinor with a non-minimal coupling to obtain the nonrelativistic limit. In this limit, we will study the noncommutative quantum dynamics and obtain the noncommutative Anandan's geometric phase. We analyze the situation where magnetic dipole moment of the particle is zero and we obtain the noncommutative version of the He-McKellar-Wilkens effect. We demonstrate that this phase in the noncommutative case is a geometric dispersive phase. We also investigate this geometric phase considering the noncommutativity in the phase space and the Anandan's phase is obtained.

E. Passos; L. R. Ribeiro; C. Furtado; J. R. Nascimento

2007-06-18T23:59:59.000Z

306

The Noncommutative Anandan's Quantum Phase  

E-Print Network [OSTI]

In this work we study the noncommutative nonrelativistic quantum dynamics of a neutral particle, that possesses permanent magnetic and electric dipole momenta, in the presence of an electric and magnetic fields. We use the Foldy-Wouthuysen transformation of the Dirac spinor with a non-minimal coupling to obtain the nonrelativistic limit. In this limit, we will study the noncommutative quantum dynamics and obtain the noncommutative Anandan's geometric phase. We analyze the situation where magnetic dipole moment of the particle is zero and we obtain the noncommutative version of the He-McKellar-Wilkens effect. We demonstrate that this phase in the noncommutative case is a geometric dispersive phase. We also investigate this geometric phase considering the noncommutativity in the phase space and the Anandan's phase is obtained.

Passos, E; Nascimento, J R; Ribeiro, L R

2006-01-01T23:59:59.000Z

307

Single Bubble SonoLuminescence of Particles model  

E-Print Network [OSTI]

The Single Bubble SonoLuminescence is a phenomenon where the vapor bubble trapped in a liquid collapse by emitting of a light. It is very known that the temperature inside the bubble depends on the radius, during the collapse, the temperature can reach thousands of Kelvins and that the light would be emitted by radiation of the ionized gas inside the bubble. So, studies show that in certain cases neither an imploding shock nor a plasma has been observed and the temperature is not high enough to explain the spectrum observed. The Single Bubble SonoLuminescence remains a subject of study. For this study we consider the bubble as a box where the free particles (particularly electrons) stemming from the molecules dissociation, are are trapped and confined within the bubble. The confinement allows the particles to acquire some energy during the collapse which they lose in the form of light and also to be considered to bind to the bubble as an electron is bound to the nucleus in an atom. So, with regard to the bubble the energy of the particles can be considered to quantify, and with the quantum theory, by putting some hypotheses, their energy is determined well. The energy is physically acceptable that if the bubble is spherical. This necessary condition of a spherical bubble of the model is observed experimentally in the collapse phase but not in the afterbounce phase of the bubble, explain why the bubble emits of light in the collapse but not in the phase of the afterbounces where she can be smaller, and constitute a validation of the Single Bubble SonoLuminescence of particles model. For the application of the Single Bubble SonoLuminescence of particles model we consider a electron free particle of mass . We note that the interval of time between and energy (who can be considered as the duration when the bubble emits some light) is of the order of picoseconds, the same order that the shortest pulses observed experimentally.

Mahamadou Adama Maiga

2012-12-05T23:59:59.000Z

308

A Phase I Trial of Single-Agent Reolysin in Patients with Relapsed Multiple Myeloma  

Science Journals Connector (OSTI)

...reached the 3 1010 TCID50 daily on days 1 to 5 dose level, and grade 3 laboratory toxicities...oncolysis requires combination therapy, similar to other cancers. Clin Cancer Res; 20(23...such as a proteasome inhibitor are needed to determine whether this combination will...

Douglas W. Sborov; Gerard J. Nuovo; Andrew Stiff; Thomas Mace; Gregory B. Lesinski; Don M. Benson, Jr; Yvonne A. Efebera; Ashley E. Rosko; Flavia Pichiorri; Michael R. Grever; Craig C. Hofmeister

2014-12-01T23:59:59.000Z

309

Single-Phase Self-Oscillating Jets for Enhanced Heat Transfer: Preprint  

SciTech Connect (OSTI)

Self-oscillating jets have potential to cool insulated gate bipolar transistors in vehicle power electronics modules.

Narumanchi, S.; Kelly, K.; Mihalic, M.; Gopalan, S.; Hester, R.; Vlahinos, A.

2008-06-01T23:59:59.000Z

310

Compact, Light-Weight, Single-Phase, Liquid-Cooled Cold Plate  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

311

Reactive Power Operation Analysis of a Single-Phase EV/PHEV Bidirectional Battery Charger  

E-Print Network [OSTI]

--More battery powered electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) will be introduced, charger, electric vehicle, EV, PHEV, reactive power, V2G. I. INTRODUCTION According to the international of the electric grid by supplying ancillary services such as reactive power compensation, voltage regulation

Tolbert, Leon M.

312

Electric Motors Continuous, Polyphase, and Single-phase Motors: Their Theory and Construction  

Science Journals Connector (OSTI)

... been made in electrical engineering. A foremost place in this progress must be given to electric ...electricmotors ...

STANLEY P. SMITH

1911-02-09T23:59:59.000Z

313

Compact, Light-Weight, Single-Phase, Liquid-Cooled Cold Plate  

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

made to proceed with hardware fabrication. February 2012 Fabricated first jet-based plastic heat exchanger prototype; initiated experimental testing for pressure drop and...

314

Modelling and Simulation of a Single Phase Grid Connected Using Photovoltaic and Battery Based Power Generation  

Science Journals Connector (OSTI)

Microgrid is a part of the power distribution system which uses renewable energy based of power generation connected to the grid system. Multi energy power generation is composed of renewable energy systems including photovoltaic, wind turbine, energy ... Keywords: Battery Storage, Inverter, Microgrid, Photovoltaic, Matlab/Simulink.

Alias Khamis; Azah Mohamed; Hussain Shareef; Afida Ayob; Mohd Shahrieel Mohd Aras

2013-11-01T23:59:59.000Z

315

FPGA Based Real-Time Emulation of Single Phase H-Bridge Inverter  

Science Journals Connector (OSTI)

Traditional simulation software such as MATLAB/SIMULINK has shortcomings of low speed and high demand for computer hardware. This paper presents an FPGA based real-time simulation for power electronic devices. An...

Peng Dai; Hongshun Zhu; Xiao Fu; Guangzhou Wang

2011-01-01T23:59:59.000Z

316

Single-Phase Cascaded H-Bridge Multilevel Inverter with Nonactive Power Compensation  

E-Print Network [OSTI]

in electrical power generation from renewable energy, and solar energy has been one of the most attractive many advantages such as no fuel costs, no pollution, no noise, and little maintenance. Solar tests. Each H-bridge is connected to a 195 W solar panel. Simulation and experimental results

Tolbert, Leon M.

317

Controlled Vapor Phase Growth of Single Crystalline, Two-Dimensional GaSe  

E-Print Network [OSTI]

, and have the potential to enable next-generation electronic and optoelectronic devices. However, controlled-generation electronic and optoelectronic devices such as photodetectors and field-effect transistors. T wo-generation electronic and optoelectronic devices. Although most research has focused on 2D transition metal

Geohegan, David B.

318

Compact, Light-Weight, Single-Phase, Liquid-Cooled Cold Plate  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

319

Fast phase recovering from a single closed fringe pattern Oscar S. Dalmau-Cede~no1  

E-Print Network [OSTI]

, Guanajuato, Gto. 36000 Mexico 2 Facultad de Matematicas, UADY M´erida, Yuc. Mexico {dalmau. The disadvantage of last procedures is the computational time required in the pixelwise processing. Differently

Rivera, Mariano

320

Full-field velocity measurements of single and two phase flows using digital pulsed laser velocimetry  

E-Print Network [OSTI]

considered to be based upon qualitative rather that quantitative foundations (Adrian & Landreth 1988). As a direct result of the limitations associated with many of the previously discussed methodologies, the technique of PLV has emerged and advanced... numbers than those currently attainable with numerical solutions and less sophisticated experimental methods (Adrian 1989). Although the PLV method generally measures two dimensional velocity vectors in two dimensional flow domains, extensions to three...

Canaan, Robert Ernst

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Supporting Information Single step fabrication using a phase inversion method of  

E-Print Network [OSTI]

://detail.1688.com/offer/1259522935.html Platinum (Pt/C, 10%) $163/g $135-190/g http://us1007331355.fm was given in the supplier price) #12;S7 References (1) Ahn, Y.; Logan, B., Domestic wastewater treatment

322

Neural Network-Based Classification of Single-Phase Distribution Transformer Fault Data  

E-Print Network [OSTI]

The ultimate goal of this research is to develop an online, non-destructive, incipient fault detection system that is able to detect incipient faults in transformers and other electric equipment before the faults become catastrophic...

Zhang, Xujia

2006-08-16T23:59:59.000Z

323

Novel Cell based on Reduced Single-phase Active Front End for Multicell Converters.  

E-Print Network [OSTI]

V] and power of several Megawatts. Among different topologies [1], the cascaded Multicell [2] inverter has converters are a very interesting al- ternative for medium and high power drives. One of the more flexible topologies of this type is the Multicell con- verter. This paper presents a new regenerative cell suitable

Duffy, Ken

324

Single-Phase Inverter and Rectifier for High-Reliability Applications  

E-Print Network [OSTI]

and governments worldwide. In addition to finding these energy resources, new technologies are being sought to improve the efficiency of consuming the generated energy. Power Electronics is the key technology for both generation and the efficient consumption...

Harb, Souhib

2014-05-01T23:59:59.000Z

325

A Numerical Algorithm for Single Phase Fluid Flow in Elastic Porous ...  

E-Print Network [OSTI]

Tong Sun. David P. Yale. Abstract. In this paper we consider an integrated model for ... blem has been built based on a finite element object library that we.

2000-11-13T23:59:59.000Z

326

Phase correlations and optical coherence  

Science Journals Connector (OSTI)

We examine the properties of the recently introduced degrees of coherence regarding the phase correlations of the optical field. It is seen that some of these quantities are...

Tervo, Jani; Setälä, Tero; Friberg, Ari T

2012-01-01T23:59:59.000Z

327

Phase-Transfer-Catalyzed Oxidations  

Science Journals Connector (OSTI)

Phase-transfer catalysis (PTC) offers many excellent opportunities for conducting oxidation reactions using inexpensive primary oxidants such as oxygen, sodium hypochlorite, hydrogen peroxide, electrooxidation...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

328

Niobium hydride phase behavior studied using the cluster-variation method  

Science Journals Connector (OSTI)

We present several models for NbH phase behavior based on the cluster-variation method. The most important of these are the single-tetragonal-cell (STC) model and the twelve-cluster (TWC) model, which have as their basic clusters the single tetragonal cell and a twelve-sited cluster, respectively. The following conclusions can be drawn from our study of these models. From the STC ground-state analysis we find that, for interactions confined to the single tetragonal cell (a subset of the first 14 shells for the tetrahedral lattice), (1) it is possible to predict the ? and ? phases but not the ? phase, and (2) many-body interactions are needed to eliminate an extraneous pure phase (i.e., a phase that is not observed experimentally) at concentration [H]/[Nb]=0.25, assuming the ?, ?’, and ? phases are ground states. These observations suggest that longer-range interactions than those in the STC are important for NbH phase formation and many-body interactions may be necessary to eliminate unwanted phases at lower concentrations. We have also generated phase diagrams that are qualitatively similar (in the ordered regions) to experimental NbH phase diagrams. Our study of the TWC model shows that it is more accurate in comparison with a Monte Carlo model than the existing entropy approximations of Boureau, Richards, and MacGillivray, Soteros, and Hall. Furthermore, using the TWC model it is possible to predict an ?-?’-? phase envelope that compares well with the Futran and Hall Monte Carlo calculation. This is the first analytic free-energy calculation to predict the ?-?’-? transition. Using the TWC model we also show that, as Shirley and Hall have conjectured, many-body interactions work to lower the ?-?’ critical temperature when compared with calculations including only pair interactions. Since pair-interaction calculations overestimate the critical temperature, this is further evidence of the importance of many-body interactions.

Christine E. Soteros and Carol K. Hall

1990-10-01T23:59:59.000Z

329

EV Project Electric Vehicle Charging Infrastructure Summary Report...  

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

all days Percentage of charging units connected on single calendar day with peak electricity demand Charging Demand: Range of Aggregate Electricity Demand versus Time of Day...

330

Diffraction Studies of Ordered Phases and Phase Transitions  

E-Print Network [OSTI]

on graphite and A neutron scattering study of the diluted uniaxial dipolar coupled ferromagnets LiTb.3Y.7F4 transition, the critical neutron scattering of either crystal exhibits the asymmetry characteristic PHASES AND PHASE TRANSITIONS: A synchrotron x-ray scattering study of monolayers of CF4 adsorbed

331

Supporting Information to: Single-Molecule Electrocatalysis by Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

S1 Supporting Information to: Single-Molecule Electrocatalysis by Single-Walled Carbon Nanotubes. Experimental Methods I.1. Purification of SWNTs. The single-walled carbon nanotubes were purchased from Carbon Nanotechnologies Incorporated (Purified HiPCO single-walled carbon nanotubes). These SWNTs have an average diameter

Chen, Peng

332

Multiple events on single molecules: Unbiased estimation in single-molecule biophysics  

E-Print Network [OSTI]

Multiple events on single molecules: Unbiased estimation in single-molecule biophysics Daniel A, Princeton, NJ, December 6, 2005 (received for review June 24, 2005) Most analyses of single-molecule of a motor protein acting on a single molecule must not exceed the total molecule length. We have developed

Dekker, Nynke

333

Fabrication of nanogapped single-electron transistors for transport studies of individual single-molecule magnets  

E-Print Network [OSTI]

Fabrication of nanogapped single-electron transistors for transport studies of individual single-molecule through individual single-molecule magnets SMMs . The devices were patterned via multiple layers molecules have received considerable attention over the last several years due to the introduction of single

del Barco, Enrique

334

Phasing Out the Phase Problem in Interfacial Crystallography  

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

BESSRC/XOR BESSRC/XOR Phasing Out the Phase Problem in Interfacial Crystallography Photo of Paul Fenter (left) and Zhan Zhang at the mineral-fluid interface spectrometer at 12-ID-D (BESSRC/XOR). Paul Fenter (left) and Zhan Zhang at the mineral-fluid interface spectrometer at 12-ID-D (BESSRC/XOR). Since the advent of dedicated synchrotron radiation facilities, the applications of x-ray diffraction and scattering for structure determination have expanded to include a broad range of materials, from proteins and interfaces to nanoparticles. However, the well-known "phase problem" of crystallography limits these applications. The phase problem arises because the complete description of a structure requires a complex structure factor having both a magnitude and a phase. The measured x-ray

335

December 1985 / Vol. 10, No. 12 / OPTICS LETTERS 609 Picosecond pulse shaping by spectral phase and amplitude  

E-Print Network [OSTI]

The temporal profile of ultrashort optical pulses may be tailored by physically manipulating the phase, with a repetition rate of 100 MHz, are coupled into a 400-m length of single- mode, polarization-preserving optical.9 psec by using a double-pass grating pair.3'4 After a single pass, through the grating pair (grating

Purdue University

336

Multiple phase estimation in quantum cloning machines  

E-Print Network [OSTI]

Since the initial discovery of the Wootters-Zurek no-cloning theorem, a wide variety of quantum cloning machines have been proposed aiming at imperfect but optimal cloning of quantum states within its own context. Remarkably, most previous studies have employed the Bures fidelity or the Hilbert-Schmidt norm as the figure of merit to characterize the quality of the corresponding cloning scenarios. However, in many situations, what we truly care about is the relevant information about certain parameters encoded in quantum states. In this work, we investigate the multiple phase estimation problem in the framework of quantum cloning machines, from the perspective of quantum Fisher information matrix (QFIM). Focusing on the generalized d-dimensional equatorial states, we obtain the analytical formulas of QFIM for both universal quantum cloning machine (UQCM) and phase-covariant quantum cloning machine (PQCM), and prove that PQCM indeed performs better than UQCM in terms of QFIM. We highlight that our method can be generalized to arbitrary cloning schemes where the fidelity between the single-copy input and output states is input-state independent. Furthermore, the attainability of the quantum Cramer-Rao bound is also explicitly discussed.

Yao Yao; Li Ge; Xing Xiao; Xiao-guang Wang; Chang-pu Sun

2014-07-22T23:59:59.000Z

337

Fluctuating interfaces in microemulsion and sponge phases  

Science Journals Connector (OSTI)

A simple Ginzburg-Landau theory with a single, scalar order parameter is used to study the microscopic structure of microemulsions and sponge phases. The scattering intensity in both film and bulk contrast, as well as averages of the internal area S, the Euler characteristic ?E, and the mean curvature squared ?H2?, are calculated by Monte Carlo methods. The results are compared with results obtained from a variational approach in combination with the theory of Gaussian random fields and level surfaces. The results for the location of the transition from the microemulsion to oil-water coexistence, for the scattering intensity in bulk contrast, and for the dimensionless ratio ?EV2/S3 (where V is the volume) are found to be in good quantitative agreement. However, the variational approach fails to give a peak in the scattering intensity in film contrast at finite wave vector, a peak which is observed both in the Monte Carlo simulations and in experiment. Also, the variational approach fails to produce a transition from the microemulsion to the lamellar phase.

G. Gompper and J. Goos

1994-08-01T23:59:59.000Z

338

Early Type Galaxy Core Phase Densities  

E-Print Network [OSTI]

Early type galaxies, ellipticals and S0's, have two distinct core density profiles, either a power law or nearly flat in projection. The two core types are distributed with substantial overlap in luminosity, radius, mass and velocity dispersion, however, the cores separate into two distinct distributions in their coarse grain phase density, Q_0 = rho/sigma^3,suggesting that dynamical processes played a dominant role in their origin. The transition phase density separating the two elliptical types is approximately 0.003 M_sun pc^-3 km^-3 s^3,. The Q_0*M_c^2 vs M_c diagram shows that globular clusters, nuclear star clusters and power-law cores fall on what is likely a "collisional" sequence of inspiralling globular clusters. on which the relative core mass excess varies as the bulk stellar mass to the -0.34+/-0.08 power, close to predictions, albeit with a correlation coefficient of -0.46. Both power-law and cored galaxies lie on a single sequence of approximately Q_0 ~r_c^-2.2, suggesting that transport proces...

Carlbeg, Raymond

2014-01-01T23:59:59.000Z

339

Village of Belmont, Wisconsin (Utility Company) | Open Energy Information  

Open Energy Info (EERE)

Belmont Belmont Place Wisconsin Utility Id 1522 Utility Location Yes Ownership M NERC Location RFC NERC RFC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Cg-1 General Service Single Phase Commercial Cg-1 General Service Three Phase Commercial Cp-1 Small Power Service Commercial Cp-2 Small Power Time-of-Day Service Commercial Cp-3 Large Power Time-of-Day Industrial Ms-1 Street and Security Lighting Service: 100 W HPS(Ornamental) Lighting Ms-1 Street and Security Lighting Service: 100 W HPS(Overhead) Lighting Ms-1 Street and Security Lighting Service: 150 W HPS(Ornamental) Lighting

340

Guthrie County Rural E C A | Open Energy Information  

Open Energy Info (EERE)

Guthrie County Rural E C A Guthrie County Rural E C A Place Iowa Utility Id 7750 Utility Location Yes Ownership C NERC Location MRO NERC MRO Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Heat Plus Large Power < 500 kVA Commercial Large Power Time of Day Commercial Large Power Time of Day > 1000 kVA Industrial Multi Phase Residential Outdoor Lighting HPS 150 W Lighting Single Phase Residential Average Rates Residential: $0.1160/kWh Commercial: $0.0941/kWh Industrial: $0.0611/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a"

Note: This page contains sample records for the topic "time-of-day single phase" 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

Speckle from phase-ordering systems  

Science Journals Connector (OSTI)

The statistical properties of coherent radiation scattered from phase-ordering materials are studied in detail using large-scale computer simulations and analytic arguments. Specifically, we consider a two-dimensional model with a nonconserved, scalar order parameter (model A), quenched through an order-disorder transition into the two-phase regime. For such systems it is well established that the standard scaling hypothesis applies, consequently, the average scattering intensity at wave vector k and time ? is proportional to a scaling function which depends only on a rescaled time, t?|k|2?. We find that the simulated intensities are exponentially distributed, and the time-dependent average is well approximated using a scaling function due to Ohta, Jasnow, and Kawasaki. Considering fluctuations around the average behavior, we find that the covariance of the scattering intensity for a single wave vector at two different times is proportional to a scaling function with natural variables ?t=|t1-t2| and tŻ=(t1+t2)/2. In the asymptotic large-tŻ limit this scaling function depends only on z=?t/tŻ1/2. For small values of z, the scaling function is quadratic, corresponding to highly persistent behavior of the intensity fluctuations. We empirically establish that the intensity covariance (for k?0) equals the square of the spatial Fourier transform of the two-time, two-point correlation function of the order parameter. This connection allows sensitive testing, either experimental or numerical, of existing theories for two-time correlations in systems undergoing order-disorder phase transitions. Comparison between theoretical scaling functions and our numerical results requires no adjustable parameters.

Gregory Brown; Per Arne Rikvold; Mark Sutton; Martin Grant

1997-12-01T23:59:59.000Z

342

PHASE CHANGE LIQUIDS  

SciTech Connect (OSTI)

Work is being performed to develop a new shipping system for frozen environmental samples (or other materials) that uses an optimal phase change liquid (PCL) formulation and an insulated shipping container with an on-board digital temperature data logger to provide a history of the temperature profile within the container during shipment. In previous work, several PCL formulations with temperatures of fusion ranging from approximately -14 to -20 C were prepared and evaluated. Both temperature of fusion and heat of fusion of the formulations were measured, and an optimal PCL formulation was selected. The PCL was frozen in plastic bags and tested for its temperature profile in a cooler using a digital temperature data logger. This testing showed that the PCL formulation can maintain freezer temperatures (< -7 to -20 C) for an extended period, such as the time for shipping samples by overnight courier. The results of the experiments described in this report provide significant information for use in developing an integrated freezer system that uses a PCL formulation to maintain freezer temperatures in coolers for shipping environmental samples to the laboratory. Experimental results show the importance of the type of cooler used in the system and that use of an insulating material within the cooler improves the performance of the freezer system. A new optimal PCL formulation for use in the system has been determined. The new formulation has been shown to maintain temperatures at < -7 to -20 C for 47 hours in an insulated cooler system containing soil samples. These results are very promising for developing the new technology.

Susan S. Sorini; John F. Schabron

2006-03-01T23:59:59.000Z

343

DEVELOPMENT OF PROTECTIVE COATINGS FOR SINGLE CRYSTAL TURBINE BLADES  

SciTech Connect (OSTI)

Turbine blades in coal derived syngas systems are subject to oxidation and corrosion due to high steam temperature and pressure. Thermal barrier coatings (TBCs) are developed to address these problems. The emphasis is on prime-reliant design and a better coating architecture, having high temperature and corrosion resistance properties for turbine blades. In Phase I, UES Inc. proposed to develop, characterize and optimize a prime reliant TBC system, having smooth and defect-free NiCoCrAlY bond layer and a defect free oxide sublayer, using a filtered arc technology. Phase I work demonstrated the deposition of highly dense, smooth and defect free NiCoCrAlY bond coat on a single crystal CMSX-4 substrate and the deposition of alpha-alumina and yttrium aluminum garnet (YAG) sublayer on top of the bond coat. Isothermal and cyclic oxidation test and pre- and post-characterization of these layers, in Phase I work, (with and without top TBC layer of commercial EB PVD YSZ) revealed significant performance enhancement.

Amarendra K. Rai

2006-12-04T23:59:59.000Z

344

Single-Chain Antibody Library  

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

Researchers at Pacific Northwest National Laboratory (PNNL) have constructed a nonimmune library consisting of 109 human antibody scFv fragments, which have been cloned and expressed on the surface of yeast. Nanomolar-affinity scFvs are routinely obtained by magnetic bead screening and flow cytometric sorting. The yeast library can be amplified 1010 fold without measurable loss of clonal diversity. This allows for indefinite expansion of the library. All scFv clones can be assessed directly on the yeast cell surface by immunofluorescent labeling and flow cytometry, obviating separate subcloning, expression, and purification steps. The ability to use multiplex library screening demonstrates the utility of this approach for high-throughput antibody isolation for proteomic applications. The yeast library may be used for research projects or teaching performed for U.S. Government purposes only. If you would like to request an aliquot of the single-chain antibody library for your research, please print and fill out the Materials Transfer Agreement (MTA) [PDF, 20K]. The website provides the contact information for mailing the MTA. [copied from http://www.sysbio.org/dataresources/singlechain.stm

Baird, Cheryl

345

Three phase downhole separator process  

DOE Patents [OSTI]

Three Phase Downhole Separator Process (TPDSP) is a process which results in the separation of all three phases, (1) oil, (2) gas, and (3) water, at the downhole location in the well bore, water disposal injection downhole, and oil and gas production uphole.

Cognata, Louis John (Baytown, TX)

2008-06-24T23:59:59.000Z

346

Thermodynamic properties and single-electrode Peltier heats of a Li-Al alloy in a LiCl-KCl eutectic melt  

SciTech Connect (OSTI)

Thermodynamic properties of a Li-Al alloy in the two-phase ({alpha}Al + {beta}LiAl), ({beta}LiAl + {gamma}Li{sub 3}Al{sub 2}), and ({gamma}Li{sub 3}Al{sub 2} + liquid) regions, and in the single {beta}LiAl phase region were determined from electromotive force measurements in a LiCl-KCl eutectic melt at temperatures from 650 to 76f0 K. From the obtained thermodynamic properties, the single-electrode Peltier heat of a Li-Al alloy electrode was evaluated as a function of the alloy composition. It turned out that the single-electrode Peltier heat of a Li-Al alloy electrode exhibits discontinuities at the compositions of coexisting-single phase boundaries. The change of the single-electrode Peltier heat on a phase boundary was interpreted thermodynamically and was found to follow from thermodynamic data for the single phases and the phase diagram data.

Amezawa, Koji; Yamamoto, Naoichi; Tomii, Yoichi; Ito, Yasuhiko [Kyoto Univ. (Japan)] [Kyoto Univ. (Japan)

1999-03-01T23:59:59.000Z

347

Green's function method for single-particle resonant states in relativistic mean field theory  

Science Journals Connector (OSTI)

Relativistic mean field theory is formulated with the Green's function method in coordinate space to investigate the single-particle bound states and resonant states on the same footing. Taking the density of states for free particles as a reference, the energies and widths of single-particle resonant states are extracted from the density of states without any ambiguity. As an example, the energies and widths for single-neutron resonant states in 120Sn are compared with those obtained by the scattering phase-shift method, the analytic continuation in the coupling constant approach, the real stabilization method, and the complex scaling method. Excellent agreements with these methods are found for the energies and widths of single-neutron resonant states.

T. T. Sun (???); S. Q. Zhang (???); Y. Zhang (??); J. N. Hu (???); J. Meng (??)

2014-11-18T23:59:59.000Z

348

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

349

Computational identification of single-layer CdO for electronic and optical applications  

SciTech Connect (OSTI)

The search for single-layer materials is an active research field. Using a first-principles design approach focusing on formation energy and bandgap, we search the family of II-VI oxides for metastable single-layer semiconductor materials. We discover a single-layer CdO phase that exhibits a small formation energy and a direct bandgap of 2.1?eV. The phonon spectrum confirms the dynamical stability of single-layer CdO. Calculations of the optical properties show a similar absorption to that of graphene. Estimates of the tunneling barrier of a graphene/CdO/graphene heterostructure reveal that CdO might be a potential dielectric for applications of graphene in electronic devices.

Zhuang, Houlong L.; Hennig, Richard G., E-mail: rhennig@cornell.edu [Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853 (United States)

2013-11-18T23:59:59.000Z

350

Phase studies of the Zr-H system at high hydrogen concentrations  

Science Journals Connector (OSTI)

The phase boundaries of the Zr-H system have been defined at high hydrogen concentrations, on the basis of studies performed on zirconium hydrides containing 4 at % uranium. The methods used include hightemperature X-ray diffraction, electrical resistance, dilatometry, and, to a limited extent, hot stage microscopy. The (?+?) two-phase region was found to exist between ZrH1.64 and ZrHi1.74 at 24 °C. This region diminishes in width with increasing temperature and closes at 455 °C and ZrH1.70. From this point, a single boundary, sloping toward higher hydrogen concentrations, separates the ? and ? single-phase regions. Precise lattice parameter measurements indicate that first-order transitions occur at the boundaries of the two-phase region. Theoretical considerations suggest that the ? ? ? transition is second order.

K.E. Moore; W.A. Young

1968-01-01T23:59:59.000Z

351

Single-Molecule Flourescence/Patch Clamp Microscope | EMSL  

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

Single-Molecule FlourescencePatch Clamp Microscope Single-Molecule FlourescencePatch Clamp Microscope At EMSL, researchers use the single-molecule fluorescencepatch clamp...

352

Monitoring Single Molecule Reactivity On a Carbon Nanotube  

E-Print Network [OSTI]

LETTERS Monitoring Single-Molecule Reactivity on a Carbondevice directly transduces single-molecule attachments andoptical methods in single-molecule research. Compared to

Collins, Philip G

2008-01-01T23:59:59.000Z

353

Single Molecule Spectroscopy for Studying Conformational Dynamics of Short Oligonucleotides  

E-Print Network [OSTI]

to the activity of a single molecule. Over the past twentyallow researchers to use single molecule approaches to forLaser Excitation of Single Molecules. Accounts of Chemical

Lin, Ron Reuven

2012-01-01T23:59:59.000Z

354

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

Three-terminal, single molecule circuits based on carbonHowever, reliable single- molecule devices remainnew architecture for studying single- molecule behavior that

Collins, Philip G

2007-01-01T23:59:59.000Z

355

Single molecule studies of DNA packaging by bacteriophages  

E-Print Network [OSTI]

for the study of single molecule protein- DNA interactions.Physics Studies in Single Molecule Biophysics ProfessorOF THE DISSERTATION Single Molecule Studies of DNA Packaging

Fuller, Derek Nathan

2008-01-01T23:59:59.000Z

356

Methods for parallel amplification of single DNA molecules  

E-Print Network [OSTI]

2006) BEAMing: single? molecule PCR on microparticles in Mutation  detection and single?molecule counting using Amplification of DNA Single Molecules by Linear Rolling 

McElfish, Erin Marie

2009-01-01T23:59:59.000Z

357

Intermittent Single-Molecule Interfacial Electron Transfer Dynamics...  

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

Intermittent Single-Molecule Interfacial Electron Transfer Dynamics. Intermittent Single-Molecule Interfacial Electron Transfer Dynamics. Abstract: We report on single molecule...

358

Heralded single-photon partial coherence  

Science Journals Connector (OSTI)

We study transverse spatial coherence of approximately localized single-photon states. We demonstrate nonlocal control over single-photon spatial coherence via projective measurements of an entangled twin and provide a theoretical interpretation from quantum coherence theory. Our results show that the spatial coherence of a single-photon state behaves similarly to that of a classical optical field, although the coincidence measurement adds a degree of freedom.

P. Ben Dixon; Gregory Howland; Mehul Malik; David J. Starling; R. W. Boyd; John C. Howell

2010-08-02T23:59:59.000Z

359

Heralded single-photon partial coherence  

SciTech Connect (OSTI)

We study transverse spatial coherence of approximately localized single-photon states. We demonstrate nonlocal control over single-photon spatial coherence via projective measurements of an entangled twin and provide a theoretical interpretation from quantum coherence theory. Our results show that the spatial coherence of a single-photon state behaves similarly to that of a classical optical field, although the coincidence measurement adds a degree of freedom.

Dixon, P. Ben; Howland, Gregory; Starling, David J.; Howell, John C. [Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States); Malik, Mehul [Institute of Optics, University of Rochester, Rochester, New York 14627 (United States); Boyd, R. W. [Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States); Institute of Optics, University of Rochester, Rochester, New York 14627 (United States)

2010-08-15T23:59:59.000Z

360

Optical Precursor of a Single Photon  

SciTech Connect (OSTI)

We report the direct observation of optical precursors of heralded single photons with step- and square-modulated wave packets passing through cold atoms. Using electromagnetically induced transparency and the slow-light effect, we separate the single-photon precursor, which always travels at the speed of light in vacuum, from its delayed main wave packet. In the two-level superluminal medium, our result suggests that the causality holds for a single photon.

Zhang Shanchao; Chen, J. F.; Liu, Chang; Loy, M. M. T.; Wong, G. K. L.; Du, Shengwang [Department of Physics, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon (Hong Kong)

2011-06-17T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Epitaxial Single Crystal Nanostructures for Batteries & PVs ...  

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

Electrode Channel Flow DEMS Cell Sulfur@Carbon Cathodes for Lithium Sulfur Batteries Better Ham & Cheese: Enhanced Anodes and Cathodes for Fuel Cells Epitaxial Single...

362

Electron transport through single carbon nanotubes  

E-Print Network [OSTI]

through single carbon nanotubes G. Chai Apollo Technologies,aligned multi-wall carbon nanotubes (CNT). Embedding of CNTsuse of fiber coated carbon nanotubes makes the handling of

Chai, G

2008-01-01T23:59:59.000Z

363

High Throughput Single Molecule Investigation of Transcription  

E-Print Network [OSTI]

Single Molecule Protein Folding in a Coaxial Mixer. Biophys.Kinetic Studies of Protein Folding. Anal. Chem. 76, 7169-Molecule Measurement of Protein Folding Kinetics . Science

Kim, Soohong

2012-01-01T23:59:59.000Z

364

Electron transport through single carbon nanotubes  

E-Print Network [OSTI]

transport through single carbon nanotubes G. Chai Apolloaligned multi-wall carbon nanotubes (CNT). Embedding of CNTsuse of fiber coated carbon nanotubes makes the handling of

Chai, G

2008-01-01T23:59:59.000Z

365

Magnetism of Single Vacancies in Rippled Graphene  

Science Journals Connector (OSTI)

Magnetism of Single Vacancies in Rippled Graphene ... Our results suggest that any magnetism induced by vacancies that occurs in graphene can be controlled by applying strain. ...

E. J. G. Santos; S. Riikonen; D. Sánchez-Portal; A. Ayuela

2012-03-02T23:59:59.000Z

366

Nanometer Resolution Imaging by SIngle Molecule Switching  

SciTech Connect (OSTI)

The fluorescence intensity of single molecules can change dramatically even under constant laser excitation. The phenomenon is frequently called "blinking" and involves molecules switching between high and low intensity states.[1-3] In additional to spontaneous blinking, the fluorescence of some special fluorophores, such as cyanine dyes and photoactivatable fluorescent proteins, can be switched on and off by choice using a second laser. Recent single-molecule spectroscopy investigations have shed light on mechanisms of single molecule blinking and photoswitching. This ability to controllably switch single molecules led to the invention of a novel fluorescence microscopy with nanometer spatial resolution well beyond the diffraction limit.

Hu, Dehong; Orr, Galya

2010-04-02T23:59:59.000Z

367

Single-Molecule Fluorescence Analysis in Solution  

Science Journals Connector (OSTI)

Over the past five years, several groups have developed the capability to detect and identify single fluorescent molecules in solution as the molecules flow through a focused laser...

Keller, Richard A; Ambrose, W Patrick; Goodwin, Peter M; Jett, James H; Martin, John C; Wu, Ming

1996-01-01T23:59:59.000Z

368

Transition of fermionic spectra and monopole oscillations under phase separation in the atomic Bose-Fermi mixture  

Science Journals Connector (OSTI)

We study the dynamical behavior of a Bose-Fermi mixture of trapped atomic gases which exhibits phase separation for a sufficiently strong repulsive interparticle interaction. For a dominantly bosonic mixture, the fermion density distribution and the associated single-particle spectra undergo a rapid change around the transition to the separated phase. Monopole strength distribution is studied in the random-phase approximation. The average energy calculated from the fermionic monopole strength shows a sharp minimum close to the transition point. The dynamical origin of the fermion single particle and collective properties is studied within a simple approximation.

T. Sogo; T. Suzuki; H. Yabu

2003-12-15T23:59:59.000Z

369

Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM) motors for a fault  

E-Print Network [OSTI]

Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM-Switching Permanent Magnet (FSPM) motors attract more and more attentions in the critical application as the Hybrid and will disturb the normal phases because of the magnetic coupling between phases. In order to compare the fault

Paris-Sud XI, Université de

370

Two-phase flow and transport in the air cathode of proton exchange membrane fuel cells  

SciTech Connect (OSTI)

Two-phase flow and transport of reactants and products in the air cathode of proton exchange membrane (PEM) fuel cells is studied analytically and numerically. Four regimes of water distribution and transport are classified by defining three threshold current densities and a maximum current density. They correspond to first appearance of liquid water at the membrane/cathode interface, extension of the gas-liquid two-phase zone to the cathode/channel interface, saturated moist air exiting the gas channel, and complete consumption of oxygen by the electrochemical reaction. When the cell operates above the first threshold current density, liquid water appears and a two-phase zone forms within the porous cathode. A two-phase, multi-component mixture model in conjunction with a finite-volume-based computational fluid dynamics (CFD) technique is applied to simulate the cathode operation in this regime. The model is able to handle the situation where a single-phase region co-exists with a two-phase zone in the air cathode. For the first time, the polarization curve as well as water and oxygen concentration distributions encompassing both single- and two-phase regimes of the air cathode are presented. Capillary action is found to be the dominant mechanism for water transport inside the two-phase zone. The liquid water saturation within the cathode is predicted to reach 6.3% at 1.4 A/cm{sup 2}.

WANG,Z.H.; WANG,C.Y.; CHEN,KEN S.

2000-03-20T23:59:59.000Z

371

SNMR pulse sequence phase cycling  

DOE Patents [OSTI]

Technologies applicable to SNMR pulse sequence phase cycling are disclosed, including SNMR acquisition apparatus and methods, SNMR processing apparatus and methods, and combinations thereof. SNMR acquisition may include transmitting two or more SNMR pulse sequences and applying a phase shift to a pulse in at least one of the pulse sequences, according to any of a variety cycling techniques. SNMR processing may include combining SNMR from a plurality of pulse sequences comprising pulses of different phases, so that desired signals are preserved and indesired signals are canceled.

Walsh, David O; Grunewald, Elliot D

2013-11-12T23:59:59.000Z

372

Phase Stable RF-over-fiber Transmission using Heterodyne Interferometry  

SciTech Connect (OSTI)

New scientific applications require phase-stabilized RF distribution to multiple remote locations. These include phased-array radio telescopes and short pulse free electron lasers. RF modulated onto a CW optical carrier and transmitted via fiber is capable of low noise, but commercially available systems aren't long term stable enough for these applications. Typical requirements are for less than 50fs long term temporal stability between receivers, which is 0.05 degrees at 3GHz. Good results have been demonstrated for RF distribution schemes based on transmission of short pulses, but these require specialized free-space optics and high stability mechanical infrastructure. We report a method which uses only standard telecom optical and RF components, and achieves less than 20fs RMS error over 300m of standard single-mode fiber. We demonstrate stable transmission of 3GHz over 300m of fiber with less than 0.017 degree (17fs) RMS phase error. An interferometer measures optical phase delay, providing information to a feed-forward correction of RF phase.

Wilcox, R.; Byrd, J. M.; Doolittle, L.; Huang, G.; Staples, J. W.

2010-01-02T23:59:59.000Z

373

Property:GEADevelopmentPhase | Open Energy Information  

Open Energy Info (EERE)

GEADevelopmentPhase GEADevelopmentPhase Jump to: navigation, search Property Name GEADevelopmentPhase Property Type Page Description GEA Development Phase, as characterized by their Annual U.S. Geothermal Power Production and Development Report. See GEA_Development_Phases Allows Values Phase I - Resource Procurement and Identification;Phase II - Resource Exploration and Confirmation;Phase III - Permitting and Initial Development;Phase IV - Resource Production and Power Plant Construction Subproperties This property has the following 77 subproperties: A Abraham Hot Springs Geothermal Area Adak Geothermal Area Akun Strait Geothermal Area Akutan Fumaroles Geothermal Area Alum Geothermal Area Alvord Hot Springs Geothermal Area Amedee Geothermal Area Arrowhead Hot Springs Geothermal Area

374

Phase projection using three satellites  

E-Print Network [OSTI]

This study seeks to investigate various techniques used in Interferometric Synthetic Aperture Radar (InSAR) during the phase unwrapping process and the noise filtering step. In particular, as intuition would follow, we ...

Yeung, Michael C. (Michael Chi-Hang)

2007-01-01T23:59:59.000Z

375

Agenda Phase 2 Industry Day  

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

JCTD Deputy Transition Manager, NAVFAC EXWC 11:00 - 11:15 Ft. Carson Sustainability and Net Zero Plan and Successes Hal Alguire, Director DPW 11:15 - 11:30 Phase 3, Future plans...

376

Precision digital pulse phase generator  

DOE Patents [OSTI]

A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code. 2 figs.

McEwan, T.E.

1996-10-08T23:59:59.000Z

377

Phase retrieval with prior information  

Science Journals Connector (OSTI)

An algorithm for phase retrieval with Bayesian statistics is discussed. It is shown how the statistics of Kolmogorov turbulence can be used to compute the likelihood for a particular...

Irwan, R; Lane, R G

1998-01-01T23:59:59.000Z

378

Gas-phase chemical dynamics  

SciTech Connect (OSTI)

Research in this program is directed towards the spectroscopy of small free radicals and reactive molecules and the state-to-state dynamics of gas phase collision, energy transfer, and photodissociation phenomena. Work on several systems is summarized here.

Weston, R.E. Jr.; Sears, T.J.; Preses, J.M. [Brookhaven National Laboratory, Upton, NY (United States)

1993-12-01T23:59:59.000Z

379

Phase-Transfer-Catalyzed Reductions  

Science Journals Connector (OSTI)

Phase-transfer catalysis (PTC) procedures that have been developed for use with sodium borohydride, lithium aluminum hydride, and several other reducing agents involving anion transfer to organic media are des...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

380

Insoluble Phase-Transfer Catalysts  

Science Journals Connector (OSTI)

An important problem facing the designer of industrial phase-transfer catalysis (PTC) processes using soluble PTC catalysts concerns the removal of the catalyst from the reaction mixture, and its economic recy...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Precision digital pulse phase generator  

DOE Patents [OSTI]

A timing generator comprises a crystal oscillator connected to provide an output reference pulse. A resistor-capacitor combination is connected to provide a variable-delay output pulse from an input connected to the crystal oscillator. A phase monitor is connected to provide duty-cycle representations of the reference and variable-delay output pulse phase. An operational amplifier drives a control voltage to the resistor-capacitor combination according to currents integrated from the phase monitor and injected into summing junctions. A digital-to-analog converter injects a control current into the summing junctions according to an input digital control code. A servo equilibrium results that provides a phase delay of the variable-delay output pulse to the output reference pulse that linearly depends on the input digital control code.

McEwan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

382

Physics & Astronomy BSc (Single Honours Degrees)  

E-Print Network [OSTI]

138 Physics & Astronomy BSc (Single Honours Degrees) Astrophysics Physics MPhys (Single Honours in the new concourse of the School's main building. Physics&Astronomy Features * The size of the School and Astronomy degrees have been accredited by the Institute of Physics. * The University Observatory contains

Brierley, Andrew

383

Single Assessment Pass Rate South Carolina  

E-Print Network [OSTI]

Single Assessment Pass Rate South Carolina Academic Year 2004 - 2005 ETS Type of Assessment Test in Cohort 2,218 in Cohort #12;Single Assessment Pass Rate South Carolina Academic Year 2004 - 2005 ETS Type, Part 0063 Middle School Mathematics 0069 Chemistry, Physics and General Science 0070 Social Studies

Kasman, Alex

384

Mobile Robot Geometry Initialization from Single Camera  

E-Print Network [OSTI]

Mobile Robot Geometry Initialization from Single Camera Daniel Pizarro1 , Manuel Mazo1 , Enrique to achieve robot localization has been widely proposed in the area of Intelligent Spaces. Recently, an online approach that simul- taneously obtains robot's pose and its 3D structure using a single external camera has

Paris-Sud XI, Université de

385

Ames Lab 101: Single Crystal Growth  

SciTech Connect (OSTI)

Ames Laboratory scientist Deborah Schlagel talks about the Lab's research in growing single crystals of various metals and alloys. The single crystal samples are vital to researchers' understanding of the characteristics of a materials and what gives these materials their particular properties.

Schlagel, Deborah

2013-09-27T23:59:59.000Z

386

Diamond based single molecule magnetic resonance spectroscopy  

E-Print Network [OSTI]

The detection of a nuclear spin in an individual molecule represents a key challenge in physics and biology whose solution has been pursued for many years. The small magnetic moment of a single nucleus and the unavoidable environmental noise present the key obstacles for its realization. Here, we demonstrate theoretically that a single nitrogen-vacancy (NV) center in diamond can be used to construct a nano-scale single molecule spectrometer that is capable of detecting the position and spin state of a single nucleus and can determine the distance and alignment of a nuclear or electron spin pair. The proposed device will find applications in single molecule spectroscopy in chemistry and biology, such as in determining protein structure or monitoring macromolecular motions and can thus provide a tool to help unravelling the microscopic mechanisms underlying bio-molecular function.

Jianming Cai; Fedor Jelezko; Martin B. Plenio; Alex Retzker

2011-12-23T23:59:59.000Z

387

Probing Single-Molecule Protein Conformational Dynamics. | EMSL  

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

Single-Molecule Protein Conformational Dynamics. Probing Single-Molecule Protein Conformational Dynamics. Abstract: Protein conformational fluctuations and dynamics, often...

388

Clay Nanoparticle-Supported Single-Molecule FluorescenceSpectroelectr...  

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

Clay Nanoparticle-Supported Single-Molecule Fluorescence Spectroelectrochemistry. Clay Nanoparticle-Supported Single-Molecule Fluorescence Spectroelectrochemistry. Abstract: We...

389

Multi-wavelength surface emitting quantum cascade laser based on equivalent phase shift  

SciTech Connect (OSTI)

A novel surface emitting distributed feedback quantum cascade laser emitting around ????4.6??m is demonstrated by employing an equivalent phase shift (EPS) of quarter-wave (?/4). The EPS is fabricated through extending one sampling period by 50% in the center of a sampled Bragg grating. Single-lobed far-field radiation pattern with a low divergence angle of about 0.6°?×?16.8° is obtained. Selective single-mode lasing with a mean side mode suppression ratio above 20?dB and wavelength coverage range of 72?nm is achieved simultaneously on a single wafer only by changing the sampling period.

Zhang, J. C., E-mail: zhangjinchuan@semi.ac.cn; Liu, F. Q., E-mail: fqliu@semi.ac.cn; Yao, D. Y.; Wang, L. J.; Yan, F. L.; Liu, J. Q.; Wang, Z. G. [Institute of Semiconductors, Key Laboratory of Semiconductor Materials Science, Chinese Academy of Sciences, Beijing, 100083, People’s Republic of China and Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Beijing 100083 (China)

2014-01-21T23:59:59.000Z

390

Multidelay Model Relating Tide Height to Underwater Acoustic Phase  

Science Journals Connector (OSTI)

Observed relationships between environmental parameters and underwater acoustic phase were earlier reported and a multi?input nonrealizable model was analyzed showing that among several parameters tide height has the strongest coherence with measured phase fluctuations. This work is concerned with a special case of the above model where the system is single input with a realizable impulse response consisting of few delays. Several cases are considered such as a single delay two or more delays. Among these a special case is found where one of the delays is fixed at zero time (in phase no delay component). Two kinds of results are reported—one where optimization is carried out on all energy bands another where optimization is carried out on selected bands that are least corrupted by noise and the effect of other parameters. The resulting transfer function is calculated and errors from measured values are given individually for each band and also collectively as a figure of merit for that solution. [Work supported by Office of Naval Research Code 468.

Kamal Yacoub; Jose Almeida

1970-01-01T23:59:59.000Z

391

All-optical routing of single photons with multiple input and output ports by interferences  

E-Print Network [OSTI]

We propose a waveguide-cavity coupled system to achieve the routing of photons by the phases of other photons. Our router has four input ports and four output ports. The transport of the coherent-state photons injected through any input port can be controlled by the phases of the coherent-state photons injected through other input ports. This control can be achieved when the mean numbers of the routed and control photons are small enough and require no additional control fields. Therefore, the all-optical routing of photons can be achieved at the single-photon level.

Wei-Bin Yan; Bao Liu; Ling Zhou; Heng Fan

2014-09-23T23:59:59.000Z

392

Observation of quasiperiodic dynamics in a one-dimensional quantum walk of single photons in space  

E-Print Network [OSTI]

We realize quasi-periodic dynamics of a quantum walker over 2.5 quasi-periods by realizing the walker as a single photon passing through a quantum-walk optical-interferometer network. We introduce fully controllable polarization-independent phase shifters in each optical path to realize arbitrary site-dependent phase shifts, and we employ large clear-aperture beam displacers, while maintaining high-visibility interference, to enable reaching 10 quantum-walk steps. By varying the half-wave-plate setting, we control the quantum-coin bias thereby observing a transition from quasi-periodic dynamics to ballistic diffusion.

Peng Xue; Hao Qin; Bao Tang; Barry C. Sanders

2013-11-30T23:59:59.000Z

393

Collective Lorentz invariant dynamics on a single "polynomial" worldline  

E-Print Network [OSTI]

Consider a worldline of a pointlike particle parametrized by polynomial functions, together with the light cone ("retardation") equation of an inertially moving observer. Then a set of apparent copies ("duplicons") of the single pointlike particle defined by the roots of the retardation equation and localized on one and the same worldline will be detected by the observer. We prove that for any "polynomial" worldline the induced collective dynamics of duplicons obeys a whole set of canonical conservation laws (for total momentum, angular momentum and the analogue of mechanical energy). Explicit formulas for the values of total angular momentum and the analogue of total rest energy (rest mass) are obtained; the latter is "self-quantized", i.e. for any worldline takes only integer values. The dynamics is Lorentz invariant though different from the canonical relativistic mechanics. Asymptotically, at large values of the observer's proper time, the duplicons split themselves into pairs ("first phase transition") a...

Kassandrov, Vladimir V; Markova, Nina V

2015-01-01T23:59:59.000Z

394

Modelling of Heat Transfer in Single Crystal Growth  

E-Print Network [OSTI]

An attempt is made to review the heat transfer and the related problems encountered in the simulation of single crystal growth. The peculiarities of conductive, convective and radiative heat transfer in the different melt, solution, and vapour growth methods are discussed. The importance of the adequate description of the optical crystal properties (semitransparency, specular reflecting surfaces) and their effect on the heat transfer is stresses. Treatment of the unknown phase boundary fluid/crystal as well as problems related to the assessment of the quality of the grown crystals (composition, thermal stresses, point defects, disclocations etc.) and their coupling to the heat transfer/fluid flow problems is considered. Differences between the crystal growth simulation codes intended for the research and for the industrial applications are indicated. The problems of the code verification and validation are discussed; a brief review of the experimental techniques for the study of heat transfer and flow structu...

Zhmakin, Alexander I

2014-01-01T23:59:59.000Z

395

Superconductivity in SrNi2P2 single crystals  

SciTech Connect (OSTI)

Heat capacity, magnetic susceptibility, and resistivity of SrNi{sub 2}P{sub 2} single crystals are presented, illustrating the structural transition at 325 K, and bulk superconductivity at 1.4 K. The magnitude of {Tc}, fits to the heat capacity data, the small upper critical field H{sub c2} = 390 Oe, and {kappa} = 2.1 suggests a conventional fully gapped superconductor. With applied pressure we find that superconductivity persists into the so-called 'collapsed tetragonal' phase, although the transition temperature is monotonically suppressed with increasing pressure. This argues that reduced dimensionality can be a mechanism for increasing the transition temperatures of layered NiP, as well as layered FeAs and NiAs, superconductors.

Ronning, Filip [Los Alamos National Laboratory; Bauer, Eric D [Los Alamos National Laboratory; Park, Tuscon [Los Alamos National Laboratory; Thompson, Joe D [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

396

Engineering a C-Phase quantum gate: optical design and experimental realization  

E-Print Network [OSTI]

A two qubit quantum gate, namely the C-Phase, has been realized by exploiting the longitudinal momentum (i.e. the optical path) degree of freedom of a single photon. The experimental setup used to engineer this quantum gate represents an advanced version of the high stability closed-loop interferometric setup adopted to generate and characterize 2-photon 4-qubit Phased Dicke states. Some experimental results, dealing with the characterization of multipartite entanglement of the Phased Dicke states are also discussed in detail.

Andrea Chiuri; Chiara Greganti; Paolo Mataloni

2012-04-12T23:59:59.000Z

397

Computational phase imaging based on intensity transport  

E-Print Network [OSTI]

Light is a wave, having both an amplitude and a phase. However, optical frequencies are too high to allow direct detection of phase; thus, our eyes and cameras see only real values - intensity. Phase carries important ...

Waller, Laura A. (Laura Ann)

2010-01-01T23:59:59.000Z

398

Phase-Transfer Catalysis: Fundamentals I  

Science Journals Connector (OSTI)

Critical to the success of phase-transfer catalytic (PTC) processes are (1) the maximization of the rate of transfer of reactant anions from the aqueous or solid phase to the organic phase, (2) the maximizatio...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

399

Phase-Transfer Catalysis: Fundamentals II  

Science Journals Connector (OSTI)

Phase-transfer catalytic (PTC) systems are characterized by the presence of at least two phases and at least one interfacial region separating the phases [1–8]. Reactions taking place in such systems usually i...

Charles M. Starks; Charles L. Liotta; Marc E. Halpern

1994-01-01T23:59:59.000Z

400

High-temperature structural phase transition in the LiCu{sub 2}O{sub 2} multiferroic  

SciTech Connect (OSTI)

The results of thermogravimetric, X-ray diffraction, and electrical studies of LiCu{sub 2}O{sub 2} single crystals in the temperature range 300-1100 K are presented. A reversible first-order phase transition between the orthorhombic and tetragonal phases is found to occur in these single crystals at T = 993 K. A pronounced peak on a differential thermal analysis curve and jumps in the unit cell parameters and the electrical resistivity are detected at the phase-transition temperature. The data on the crystal structure of LiCu{sub 2}O{sub 2} and the phase transition-induced change in the entropy determined in this work are used to conclude that the revealed phase transition is caused by the ordering-disordering of Li{sup +} and Cu{sup 2+} cations in their structural positions.

Kamentsev, K. E.; Bush, A. A., E-mail: aabush@yandex.ru [Moscow State Institute of Radio Engineering, Electronics, and Automation (Technical University) (Russian Federation); Tishchenko, E. A. [Russian Academy of Sciences, Kapitza Institute for Physical Problems (Russian Federation)] [Russian Academy of Sciences, Kapitza Institute for Physical Problems (Russian Federation); Ivanov, S. A. [Karpov Research Institute of Physical Chemistry (Russian Federation)] [Karpov Research Institute of Physical Chemistry (Russian Federation); Ottoson, M. [Uppsala University, Department of Chemistry (Sweden)] [Uppsala University, Department of Chemistry (Sweden); Mathieu, R.; Nordblad, P. [Uppsala University, Department of Engineering Sciences (Sweden)] [Uppsala University, Department of Engineering Sciences (Sweden)

2013-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Dramatic changes in the electronic structure upon transition to the collapsed tetragonal phase in CaFe2As2  

SciTech Connect (OSTI)

We use angle-resolved photoemission spectroscopy and density functional theory calculations to study the electronic structure of CaFe2As2 in the collapsed tetragonal (CT) phase. This unusual phase of iron arsenic high-temperature superconductors was hard to measure as it exists only under pressure. By inducing internal strain, via the postgrowth thermal treatment of single crystals, we were able to stabilize the CT phase at ambient pressure. We find significant differences in the Fermi surface topology and band dispersion data from the more common orthorhombic-antiferromagnetic or tetragonal-paramagnetic phases, consistent with electronic structure calculations. The top of the hole bands sinks below the Fermi level, which destroys the nesting present in parent phases. The absence of nesting in this phase, along with an apparent loss of Fe magnetic moment, are now clearly experimentally correlated with the lack of superconductivity in this phase.

Dhaka, R. S. [Ames Laboratory; Jiang, Rui [Ames Laboratory; Budko, Sergey L. [Ames Laboratory; Canfield, Paul C. [Ames Laboratory; Harmon, Bruce N. [Ames Laboratory; Kaminski, Adam [Ames Laboratory; Tomic, Milan [Goethe-Universitat; Valenti, Roser [Goethe-Universitat; Lee, Yongbin [Ames Laboratory

2014-01-31T23:59:59.000Z

402

Laser Crystallization of Phase Change Material  

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

Geoffrey Campbell is the Principal Investigator for Laser Crystallization of Phase Change Material LLNL BES Programs Highlight Laser Crystallization of Phase Change Material False...

403

Binding of Nucleobases with Single-Walled Carbon Nanotubes  

E-Print Network [OSTI]

We have calculated the binding energy of various nucleobases (guanine (G), adenine (A), thymine (T) and cytosine (C)) with (5,5) single-walled carbon nanotubes (SWNTs) using ab-initio Hartre-Fock method (HF) together with force field calculations. The gas phase binding energies follow the sequence G $>$ A $>$ T $>$ C. We show that main contribution to binding energy comes from van-der Wall (vdW) interaction between nanotube and nucleobases. We compare these results with the interaction of nucleobases with graphene. We show that the binding energy of bases with SWNTs is much lower than the graphene but the sequence remains same. When we include the effect of solvation energy (Poisson-Boltzman (PB) solver at HF level), the binding energy follow the sequence G $>$ T $>$ A $>$ C $>$, which explains the experiment\\cite{zheng} that oligonucleotides made of thymine bases are more effective in dispersing the SWNT in aqueous solution as compared to poly (A) and poly (C). We also demonstrate experimentally that there is differential binding affinity of nucleobases with the single-walled carbon nanotubes (SWNTs) by directly measuring the binding strength using isothermal titration (micro) calorimetry. The binding sequence of the nucleobases varies as thymine (T) $>$ adenine (A) $>$ cytosine (C), in agreement with our calculation.

Anindya Das; A. K. Sood; Prabal K. Maiti; Mili Das; R. Varadarajan; C. N. R. Rao

2007-09-19T23:59:59.000Z

404

Phase diagrams of a model for two-layer He3-He4 mixture films  

Science Journals Connector (OSTI)

We present a Migdal-Kadanoff renormalization-group scheme for a model two-layer classical XY system with annealed impurities. The model Hamiltonian is appropriate for a two-layer He3-He4 mixture system. We find a rich variety of phase diagrams. Depending on the choice of parameters we find either one or two first-order phase-separation transitions, which may be accompanied by the appearance of superfluidity. Phase diagrams with two ? lines are found, making possible two distinct transitions in the superfluid density. In the case of phase-separation transitions, each transition is primarily associated with a single layer, and three-phase coexistence is possible. Comparison with recent experiments is made.

K. K. Mon and W. F. Saam

1981-06-01T23:59:59.000Z

405

Oscillatory Hall Effect, Magnetoresistance, and Magnetic Susceptibility of a Graphite Single Crystal  

Science Journals Connector (OSTI)

The Hall coefficient, magnetoresistance, and magnetic susceptibility of a graphite single crystal have been measured at liquid helium temperatures and in magnetic fields up to 25 kilogauss. All three phenomena are periodic functions of reciprocal field and exhibit the same period for like orientations of the crystal axes with respect to the magnetic field. The phases however are different. Where possible, experiment and theory have been compared.

Ted G. Berlincourt and M. C. Steele

1955-05-15T23:59:59.000Z

406

A real two-phase submarine debris flow and tsunami  

SciTech Connect (OSTI)

The general two-phase debris flow model proposed by Pudasaini is employed to study subaerial and submarine debris flows, and the tsunami generated by the debris impact at lakes and oceans. The model, which includes three fundamentally new and dominant physical aspects such as enhanced viscous stress, virtual mass, and generalized drag (in addition to buoyancy), constitutes the most generalized two-phase flow model to date. The advantage of this two-phase debris flow model over classical single-phase, or quasi-two-phase models, is that the initial mass can be divided into several parts by appropriately considering the solid volume fraction. These parts include a dry (landslide or rock slide), a fluid (water or muddy water; e.g., dams, rivers), and a general debris mixture material as needed in real flow simulations. This innovative formulation provides an opportunity, within a single framework, to simultaneously simulate the sliding debris (or landslide), the water lake or ocean, the debris impact at the lake or ocean, the tsunami generation and propagation, the mixing and separation between the solid and fluid phases, and the sediment transport and deposition process in the bathymetric surface. Applications of this model include (a) sediment transport on hill slopes, river streams, hydraulic channels (e.g., hydropower dams and plants); lakes, fjords, coastal lines, and aquatic ecology; and (b) submarine debris impact and the rupture of fiber optic, submarine cables and pipelines along the ocean floor, and damage to offshore drilling platforms. Numerical simulations reveal that the dynamics of debris impact induced tsunamis in mountain lakes or oceans are fundamentally different than the tsunami generated by pure rock avalanches and landslides. The analysis includes the generation, amplification and propagation of super tsunami waves and run-ups along coastlines, debris slide and deposition at the bottom floor, and debris shock waves. It is observed that the submarine debris speed can be faster than the tsunami speed. This information can be useful for early warning strategies in the coastal regions. These findings substantially increase our understanding of complex multi-phase systems and multi-physics and flows, and allows for the proper modeling of landslide and debris induced tsunami, the dynamics of turbidity currents and sediment transport, and the associated applications to hazard mitigation, geomorphology and sedimentology.

Pudasaini, Shiva P.; Miller, Stephen A. [Department of Geodynamics and Geophysics, Steinmann Institute, University of Bonn Nussallee 8, D-53115, Bonn (Germany)

2012-09-26T23:59:59.000Z

407

Lattice Boltzmann models for nonideal fluids with arrested phase-separation S. Chibbaro  

E-Print Network [OSTI]

Lattice Boltzmann models for nonideal fluids with arrested phase-separation S. Chibbaro Department repulsion in lattice Boltzmann models on the coalescence and/or breakup behavior of single, the lattice-Boltzmann LB ap- proach has emerged as a powerful mesoscopic alternative to classical macroscopic

Chibbaro, Sergio

408

Phase III Proposed Early Restoration Project Alabama Florida Louisiana Mississippi Texas  

E-Print Network [OSTI]

to be constructed at various depths. The deep water "nearshore reefs" would have a single, prefabricated modular, in less than 20 feet deep water and within 950 feet of shore. Deepwater Horizon Oil Spill Natural ResourcePhase III Proposed Early Restoration Project Alabama · Florida · Louisiana · Mississippi · Texas

409

Transition metal interaction and Ni-Fe-Cu-Si phases in silicon T. Buonassisi,b  

E-Print Network [OSTI]

precipitation may reduce the lattice mismatch compared to single-metal precipitates, rendering mixed-metal-silicide recombination activity of metal silicide clusters. Common solar cell materials are not contaminated with justTransition metal interaction and Ni-Fe-Cu-Si phases in silicon M. Heuer,a T. Buonassisi,b A. A

410

In situ Study of the Formation of Silicide Phases in Amorphous Ni-Si Mixed Layers  

SciTech Connect (OSTI)

In this paper, we investigated Ni silicide phase formation when Si is added within an as deposited 50 nm Ni film. A series of 22 samples with a Si content varying from 0 to 50 at.% was prepared and systematically investigated with in situ x-ray diffraction. The inert oxide substrate was used to identify the phases which first crystallize in an amorphous Ni-Si mixture of a given concentration. The noncongruent silicides Ni{sub 3}Si and Ni{sub 3}Si{sub 2} are never observed to crystallize readily out of the mixture. A remarkable observation is the initial crystallization at low temperature of a hexagonal Ni-silicide, observed over a broad mixed layer composition [35-49%Si]; this hexagonal phase nucleates readily as a single phase [39-47%Si] or together with Ni{sub 2}Si [35-38%Si] or NiSi [49%Si]. This low-temperature phase is related to the high temperature {theta}-phase, but covers a wide composition range up to 47%Si. For the same Ni-Si films deposited on Si(100), the initial nucleation of the Ni(Si) mixture is similar as for the samples deposited on SiO{sub 2}, such that the complex sequence of metal-rich Ni-silicide phases typically observed during Ni/Si reactions is modified. For samples containing more than 21%Si, a simpler sequential phase formation was observed upon annealing. From pole figures, the phase formation sequence was observed to have a significant influence on the texture of the technologically relevant NiSi phase. For mixture composition ranging from 38% to 43%Si, the initial transient {theta}-phase appears extremely textured on Si(100). The observed transient appearance of a hexagonal phase is of importance in understanding the phase formation mechanisms in the Ni-Si system.

Van Bockstael, C.; Detavernier, C; Van Meirhaeghe, R; Jordan-Sweet, J; Lavoie, C

2009-01-01T23:59:59.000Z

411

Gas-Phase Molecular Dynamics  

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

Gas-Phase Molecular Dynamics Gas-Phase Molecular Dynamics The Gas-Phase Molecular Dynamics Group is dedicated to developing and applying spectroscopic and theoretical tools to challenging problems in chemical physics related to reactivity, structure, dynamics and kinetics of transient species. Recent theoretical work has included advances in exact variational solution of vibrational quantum dynamics, suitable for up to five atoms in systems where large amplitude motion or multiple strongly coupled modes make simpler approximations inadequate. Other theoretical work, illustrated below, applied direct dynamics, quantum force trajectory calculations to investigate a series of reactions of the HOCO radical. The potential energy surface for the OH + CO/ H + CO2 reaction, showing two barriers (TS1 and TS2) and the deep HOCO well along the minimum energy pathway. The inset figure shows the experimental and calculated reactivity of HOCO with selected collision partners. See J.S. Francisco, J.T. Muckerman and H.-G. Yu, "HOCO radical chemistry,"

412

Phase Transformations in Confined Nanosystems  

SciTech Connect (OSTI)

This project discovered that non-equilibrium structures, including chemically ordered structures not observed in bulk systems, form in isolated nanoscale systems. Further, a generalized model was developed that effectively explained the suppression of equilibrium phase transformations. This thermodynamic model considered the free energy decrease associated with the phase transformation was less than the increase in energy associated with the formation of an interphase interface, therefore inhibiting the phase transformation. A critical diameter exists where the system transitions to bulk behavior, and a generalized equation was formulated that successfully predicted this transition in the Fe-Au system. This provided and explains a new route to novel structures not possible in bulk systems. The structural characterization was accomplished using transmission electron microscopy in collaboration with Matthew Kramer of Ames Laboratory. The PI and graduate student visited Ames Laboratory several times a year to conduct the experiments.

Shield, Jeffrey E. [Department of Mechanical & Materials Engineering] [Department of Mechanical & Materials Engineering; Belashchenko, Kirill [Department of Physics & Astronomy] [Department of Physics & Astronomy

2014-04-29T23:59:59.000Z

413

Multi-Phase Galaxy Formation and Quasar Absorption Systems  

E-Print Network [OSTI]

The central problem of galaxy formation is understanding the cooling and condensation of gas in dark matter halos. It is now clear that to match observations this requires further physics than the simple assumptions of single phase gas cooling. A model of multi-phase cooling (Maller & Bullock 2004) can successfully account for the upper cutoff in the masses of galaxies and provides a natural explanation of many types of absorption systems (Mo & Miralda-Escude 1996). Absorption systems are our best probes of the gaseous content of galaxy halos and therefore provide important constraints on models for gas cooling into galaxies. All physical processes that effect gas cooling redistribute gas and therefore are detectable in absorption systems. Detailed studies of the nature of gas in galaxy halos using absorption systems are crucial for building a correct theory of galaxy formation.

Ariyeh H. Maller

2005-05-06T23:59:59.000Z

414

Radial-Radial Single Rotor Turbine  

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

Radial-Radial Single Rotor Turbine Radial-Radial Single Rotor Turbine Radial-Radial Single Rotor Turbine A rotor for use in turbine applications. Available for thumbnail of Feynman Center (505) 665-9090 Email Radial-Radial Single Rotor Turbine A rotor for use in turbine applications has a radial compressor/pump having radially disposed spaced apart fins forming passages and a radial turbine having hollow turbine blades interleaved with the fins and through which fluid from the radial compressor/pump flows. The rotor can, in some applications, be used to produce electrical power. U.S. Patent No.: 7,044,718 (DOE S-100,626) Patent Application Filing Date: July 8, 2003 Patent Issue Date: May 16, 2006 Licensing Status: Available for Express Licensing (?). View terms and a sample license agreement.

415

Hanford Single-Shell Tank Integrity Program  

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

Operations Contract Hanford Single Hanford Single- -Shell Shell Hanford Single Hanford Single Shell Shell Tank Integrity Tank Integrity Program Program Herbert S Berman Herbert S Berman Herbert S. Berman Herbert S. Berman July 29, 2009 July 29, 2009 1 Page 1 Tank Operations Contract Introduction * The Hanford site's principle historic mission was plutonium production for the manufacture of nuclear weapons. * Between 1944 and 1988, the site operated nine graphite- moderated light-water production reactors to irradiate moderated, light-water, production reactors to irradiate fuel and produce plutonium. * Four large chemical separations plants were run to extract plutonium from the fuel, and a variety of laboratories, support facilities, and related infrastructure to support production

416

Press Pass - Press Release - Single top quark  

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

9-04 9-04 March 9, 2009 For immediate release Media Contacts: Judy Jackson, Fermilab, +1-630-840-3351, jjackson@fnal.gov Kurt Riesselmann, Fermilab, +1-630-840-3351, kurtr@fnal.gov Graphics and photos are available at: http://www.fnal.gov/pub/presspass/images/Single-Top-Quark-2009.html Fermilab collider experiments discover rare single top quark Batavia, Ill.-Scientists of the CDF and DZero collaborations at the Department of Energy's Fermi National Accelerator Laboratory have observed particle collisions that produce single top quarks. The discovery of the single top confirms important parameters of particle physics, including the total number of quarks, and has significance for the ongoing search for the Higgs particle at Fermilab's Tevatron, currently the world's most powerful operating particle accelerator.

417

Symmetry of single-wall nanotubes  

Science Journals Connector (OSTI)

A review of the symmetry groups of the various single-wall nano- and microtubes considered in the literature (BN, GaN, MS2, C, BC3, BC2N) is presented.

Damnjanovic, M.

2001-04-27T23:59:59.000Z

418

Spin effects in single-electron transistors  

E-Print Network [OSTI]

Basic electron transport phenomena observed in single-electron transistors (SETs) are introduced, such as Coulomb-blockade diamonds, inelastic cotunneling thresholds, the spin-1/2 Kondo effect, and Fano interference. With ...

Granger, Ghislain

2005-01-01T23:59:59.000Z

419

Single Stream Recycling Say Goodbye to Sorting  

E-Print Network [OSTI]

Single Stream Recycling Say Goodbye to Sorting Paper Please email recycle@umich.edu for more Containers Cardboard Please flatten all cardboard before placing into bin! Visit us at www.recycle

Awtar, Shorya

420

Peoples Gas – Single Family Direct Install (Illinois)  

Broader source: Energy.gov [DOE]

Owners of single-family homes, condos, townhomes and two-flats may be eligible for a free installation of new programmable thermostats, pipe insulation, showerheads, and faucet aerators through...

Note: This page contains sample records for the topic "time-of-day single phase" 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

Phenomenology of single and double diffraction dissociation  

E-Print Network [OSTI]

Predictions of the gap-probability renormalization model for single and double diffraction dissociation cross sections in proton-proton collisions at the LHC are presented and compared with recent CMS measurements.

Konstantin Goulianos

2013-10-21T23:59:59.000Z

422

Magnetically multiplexed heating of single domain nanoparticles  

E-Print Network [OSTI]

Selective hysteretic heating of multiple collocated types of single domain magnetic nanoparticles (SDMNPs) by alternating magnetic fields (AMFs) may offer a useful tool for biomedical applications. The possibility of ...

Romero, G.

423

Laser Ignition of Single Magnesium Particles  

Science Journals Connector (OSTI)

The minimum ignition temperature and minimum ignition energy of single magnesium particles was determined ... levitated ultrasonically and was ignited by a short laser pulse. The temperature transient of the part...

J. F. Zevenbergen; A. E. Dahoe…

2000-01-01T23:59:59.000Z

424

Single-molecule kinetics of nanoparticle catalysis  

Science Journals Connector (OSTI)

Owing to their structural dispersion, the catalytic properties of nanoparticles are challenging to characterize in ensemble-averaged measurements. The single-molecule approach enables studying the catalysis of na...

Weilin Xu; Hao Shen; Guokun Liu; Peng Chen

2009-12-01T23:59:59.000Z

425

Single Molecule Probes of Lipid Membrane Structure  

E-Print Network [OSTI]

structural metrics with function in biological membranes. Single-molecule fluorescence studies were used to measure membrane structure at the molecular level. Several groups have shown that polarized total internal reflection fluorescence microscopy (PTIRF...

Livanec, Philip W.

2009-12-14T23:59:59.000Z

426

Single-Molecule Detection with Active Transport.  

E-Print Network [OSTI]

??A glass capillary is used near the focal region of a custom-built confocal microscope to investigate the use of active transport for single-molecule detection in… (more)

Ball, David Allan

2006-01-01T23:59:59.000Z

427

Structural phase transitions in low-dimensional ion crystals  

E-Print Network [OSTI]

A chain of singly-charged particles, confined by a harmonic potential, exhibits a sudden transition to a zigzag configuration when the radial potential reaches a critical value, depending on the particle number. This structural change is a phase transition of second order, whose order parameter is the crystal displacement from the chain axis. We study analytically the transition using Landau theory and find full agreement with numerical predictions by [J. Schiffer Phys. Rev. Lett. 70, 818 (1993)] and [Piacente et al Phys. Rev. B 69, 045324 (2004)]. Our theory allows us to determine analytically the system's behaviour at the transition point.

Shmuel Fishman; Gabriele De Chiara; Tommaso Calarco; Giovanna Morigi

2007-10-09T23:59:59.000Z

428

Structural phase transitions in low-dimensional ion crystals  

Science Journals Connector (OSTI)

A chain of singly charged particles, confined by a harmonic potential, exhibits a sudden transition to a zigzag configuration when the radial potential reaches a critical value, depending on the particle number. This structural change is a phase transition of second order, whose order parameter is the crystal displacement from the chain axis. We study analytically the transition using Landau theory and find full agreement with numerical predictions by Schiffer [Phys. Rev. Lett. 70, 818 (1993)] and Piacente et al. [Phys. Rev. B 69, 045324 (2004)]. Our theory allows us to determine analytically the system’s behavior at the transition point.

Shmuel Fishman; Gabriele De Chiara; Tommaso Calarco; Giovanna Morigi

2008-02-25T23:59:59.000Z

429

Implementation of optimal phase-covariant cloning machines  

E-Print Network [OSTI]

The optimal phase covariant cloning machine (PQCM) broadcasts the information associated to an input qubit into a multi-qubit systems, exploiting a partial a-priori knowledge of the input state. This additional a priori information leads to a higher fidelity than for the universal cloning. The present article first analyzes different experimental schemes to implement the 1->3 PQCM. The method is then generalized to any 1->M machine for odd value of M by a theoretical approach based on the general angular momentum formalism. Finally different experimental schemes based either on linear or non-linear methods and valid for single photon polarization encoded qubits are discussed.

Fabio Sciarrino; Francesco De Martini

2006-09-14T23:59:59.000Z

430

Ab initio calculations of surface phase diagrams of silica polymorphs  

Science Journals Connector (OSTI)

We present first-principle calculations of structural and electronic properties of several ?-quartz and ?-cristobalite surfaces. The effect of hydrogen passivation is investigated and it is demonstrated that in addition to significantly reducing the surface energy, hydrogen dramatically changes the surface phase diagram. We identify stability fields for single species surface termination and demonstrate that controlling the chemical environment allows a certain degree of process control of the surface termination and properties important in modern technology such as atomic layer deposition of high-k dielectrics and silicon on insulator.

Evgueni Chagarov; Alexander A. Demkov; James B. Adams

2005-02-23T23:59:59.000Z

431

Phase appearance or disappearance in two-phase flows  

E-Print Network [OSTI]

in a large variety of industrial or natural systems involving boiling or condensing fluids, reacting flows-phase flows. Such models have crucial importance in many industrial areas such as nuclear power plant safety considered. Numerical results are presented which demonstrate the efficiency of the proposed solutions. Key

Boyer, Edmond

432

A single power supply optoelectronic differential amplifier  

E-Print Network [OSTI]

A SINGLE POWER SUPPLY OPTOELECTRONIC DIFFERENTIAL AMPLIFIER A Thesis by YOUNGiXIIN ALBERT CHOI Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE December... 1987 Major Subject: Electrical Engineering A SINGLE POWER SUPPLY OPTOELECTRONIC DIFFERENTIAL AMPLIFIER A Thesis by YOUNGMIN ALBERT CHOI Approved a. s to style and content by: He y F. aylor (Chairman of Committee) Kai Chang (Member) Ohannes...

Choi, Youngmin Albert

1987-01-01T23:59:59.000Z

433

Indistinguishable Photons from a Single Molecule  

E-Print Network [OSTI]

We report the results of coincidence counting experiments at the output of a Michelson interferometer using the zero-phonon-line emission of a single molecule at $1.4 K$. Under continuous wave excitation, we observe the absence of coincidence counts as an indication of two-photon interference. This corresponds to the observation of Hong-Ou-Mandel correlations and proves the suitability of the zero-phonon-line emission of single molecules for applications in linear optics quantum computation.

A. Kiraz; M. Ehrl; Th. Hellerer; O. E. Mustecaplioglu; C. Brauchle; A. Zumbusch

2005-05-05T23:59:59.000Z

434

Single Molecule Detection of Nanomechanical Motion  

Science Journals Connector (OSTI)

We investigate theoretically how single molecule spectroscopy techniques can be used to perform fast and high resolution displacement detection and manipulation of nanomechanical oscillators, such as singly clamped carbon nanotubes. We analyze the possibility of real time displacement detection by the luminescence signal and of displacement fluctuations by the degree of second order coherence. Estimates of the electromechanical coupling constant indicate that intriguing regimes of strong backaction between the two-level system of a molecule and the oscillator can be realized.

Vadim Puller; Brahim Lounis; Fabio Pistolesi

2013-03-19T23:59:59.000Z

435

Ising model: secondary phase transition  

E-Print Network [OSTI]

Lttice-spin phonons are considered, which make the heat capacity at the critical temperature satisfy experimental observations better. There is a BEC phase transition in an Ising model attributable to the lattice-spin phonons. We proved that the spin-wave theory only is available after BEC transition, and the magnons have the same characteristics as the lattice-spin phonons', resulting from quantum effect. Energy-level overlap effect at ultralow temperature is found. A prediction of BEC phase transition in a crystal is put forward as our theory generalization.

You-gang Feng

2012-04-09T23:59:59.000Z

436

Two-phase transition of Li-intercalation compounds in Li-ion batteries  

Science Journals Connector (OSTI)

Among all electrode materials, olivine LiFePO4 and spinel Li4Ti5O12 are well-known for their two-phase structure, characterized by a flat voltage plateau. The phase transition in olivine LiFePO4 may be modeled in single particle and many-particle systems at room temperature, based on the thermodynamic phase diagram which is easily affected by coherency strain and the size effect. Some metastable and transient phases in the phase diagram can also be detected during non-equilibrium electrochemical processes. In comparison to olivine LiFePO4, spinel Li4Ti5O12 possesses a ‘zero strain’ property and performs Li-site switching during the phase transition, which lead to a different phase structure. Here, the phase transitions of olivine LiFePO4 and spinel Li4Ti5O12 are systematically reviewed, and the concepts discussed may be extended to other two-phase Li-intercalation compounds in Li-ion batteries.

De Li; Haoshen Zhou

2014-01-01T23:59:59.000Z

437

Transient coherence of an EIT media under strong phase modulation  

E-Print Network [OSTI]

A strong phase modulated coupling field leads to an amplitude modulation of a probe field in an electromagnetically induced transparency process. Time vs. detuning plots for different modulation frequencies reveals a transition between an adiabatic regime where a series of smooth pulses are created with a global phase dependent upon the detuning, and a non-adiabatic regime where a strong transient oscillating response is added to these pulses. In the extreme non-adiabatic regime, where the modulation frequency is higher than the transient decay time, a coherent interference pattern is revealed. Adding a magnetic field lifts the hyperfine level degeneracy, resulting in a separation of the original pulse to three pulses. Every pulse has now a different phase dependent upon the magnetic field causing an interference effect between the different magnetic level transients. We explore the dynamics of the magnetic and non magnetic cases and show its resemblance to the Landau-Zener theory. We also show that combining the global phase of the pulses with the transient interference allows for a wide magnetic sensing range without loosing the sensitivity of a single EIT line.

David Shwa; Nadav Katz

2013-12-30T23:59:59.000Z

438

Multi-phase back contacts for CIS solar cells  

DOE Patents [OSTI]

Multi-phase, single layer, non-interdiffusing M-Mo back contact metallized films, where M is selected from Cu, Ga, or mixtures thereof, for CIS cells are deposited by a sputtering process on suitable substrates, preferably glass or alumina, to prevent delamination of the CIS from the back contact layer. Typical CIS compositions include CuXSe.sub.2 where X is In or/and Ga. The multi-phase mixture is deposited on the substrate in a manner to provide a columnar microstructure, with micro-vein Cu or/and Ga regions which partially or fully vertically penetrate the entire back contact layer. The CIS semiconductor layer is then deposited by hybrid sputtering and evaporation process. The Cu/Ga-Mo deposition is controlled to produce the single layer two-phase columnar morphology with controllable Cu or Ga vein size less than about 0.01 microns in width. During the subsequent deposition of the CIS layer, the columnar Cu/Ga regions within the molybdenum of the Cu/Ga-Mo back layer tend to partially leach out, and are replaced by columns of CIS. Narrower Cu and/or Ga regions, and those with fewer inner connections between regions, leach out more slowly during the subsequent CIS deposition. This gives a good mechanical and electrical interlock of the CIS layer into the Cu/Ga-Mo back layer. Solar cells employing In-rich CIS semiconductors bonded to the multi-phase columnar microstructure back layer of this invention exhibit vastly improved photo-electrical conversion on the order of 17% greater than Mo alone, improved uniformity of output across the face of the cell, and greater Fill Factor.

Rockett, Angus A. (505 Park Haven Ct., Champaign, IL 61820); Yang, Li-Chung (1107 W. Green St. #328, Urbana, IL 61801)

1995-01-01T23:59:59.000Z

439

Bionanotechnology for single-cell analysis  

Science Journals Connector (OSTI)

The cell is the smallest structural unit of biological life. These microscopic systems perform functions as diverse as energy metabolism, intra- and intercellular signalling by chemical and electrical means, and self-reproduction. Thousands of different biochemical and electrical processes are simultaneously performed with the aid of nanometre-sized proteins and information stored in DNA. Multiple processes interconnect, giving rise to complicated biological phenomena. Therefore measurement of biomolecules in intact live cells provides more relevant knowledge of their physiological function than biochemical assays carried out with purified molecules in test tubes. Several measurement techniques for single-cell analysis, developed in the past decades, have the sensitivity and resolution to monitor a small number of biomolecules within a single cell. For example, with patch clamp and related techniques, one can measure electric current passing through an ion channel to study the behaviour of a single protein molecule. Electrochemical methods such as amperometry and voltammetry allow measurement of about one hundred zepto moles of oxidisable chemicals secreted from a single cell. Various fluorescence techniques reveal the dynamics of intracellular signals such as free Ca2+ in a single cell. Newer application of nanotechnological measurements with high spatio-temporal resolution on single-cell analysis is certainly a promising area of both bionanotechnology and cell biology. In this review we will introduce several experimental approaches that have contributed to our understanding of cell functions.

Duk-Su Koh; Dae Won Moon

2006-01-01T23:59:59.000Z

440

IPA Phase 2 sensitivity and uncertainty analysis  

SciTech Connect (OSTI)

The NRC`s Phase 2 Iterative Performance Assessment (IPA) used Monte Carlo techniques to propagate uncertainty for up to 297 independent variables and nine scenarios through computer models representing the performance of the Yucca Mountain repository. The NRC staff explored the use of a number of parametric and non-parametric tests and graphical methods to display the probabilistic results. Parametric tests included regression and differential analysis. Non-parametric tests included the Kolmogorov-Smirnov test and Sign test. Graphical methods included the Complementary Cumulative Distribution Function (CCDF), hair diagram, scatter plots, histograms and box plots. Multiple linear regression of raw, ranked, standardized and other transformed variables determined the gross sensitivity over the parameter space. CCDF`s were also generated from subsets of the 400 vector sets formed by screening the vectors according to values of derived variables related to the behavior of the engineered and natural systems. While no single statistical or graphical technique proved to be useful in all cases, diverse methods of sensitivity and uncertainty analysis identified the same important input parameters.

Colten-Bradley, V.; Codell, R.; Byrne, M.R. [Nuclear Regulatory Commission, Washington, DC (United States)

1994-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Single-Well and Cross-Well Resistivity | Open Energy Information  

Open Energy Info (EERE)

Single-Well and Cross-Well Resistivity Single-Well and Cross-Well Resistivity Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Single-Well and Cross-Well Resistivity Details Activities (14) Areas (13) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Well Log Techniques Information Provided by Technique Lithology: Identify different lithological layers, rock composition, mineral, and clay content Stratigraphic/Structural: -Fault and fracture identification -Rock texture, porosity, and stress analysis -determine dip and structural features in vicinity of borehole -Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

442

Impossibility of faithfully storing single photons with the three-pulse photon echo  

SciTech Connect (OSTI)

The three-pulse photon echo is a well-known technique to store intense light pulses in an inhomogeneously broadened atomic ensemble. This protocol is attractive because it is relatively simple and it is well suited for the storage of multiple temporal modes. Furthermore, it offers very long storage times, greater than the phase relaxation time. Here, we consider the three-pulse photon echo in both two- and three-level systems as a potential technique for the storage of light at the single-photon level. By explicit calculations, we show that the ratio between the echo signal corresponding to a single-photon input and the noise is smaller than one. This severely limits the achievable fidelity of the quantum state storage, making the three-pulse photon echo unsuitable for single-photon quantum memory.

Sangouard, Nicolas; Minar, Jiri; Afzelius, Mikael; Gisin, Nicolas; Riedmatten, Hugues de [Group of Applied Physics, University of Geneva, Geneva (Switzerland); Simon, Christoph; Tittel, Wolfgang [Institute for Quantum Information Science and Department of Physics and Astronomy, University of Calgary, Calgary, Alberta T2N 1N4 (Canada); Chaneliere, Thierry; Le Goueet, Jean-Louis [Laboratoire Aime Cotton, CNRS-UPR 3321, Universite Paris-Sud, F-91405 Orsay cedex (France)

2010-06-15T23:59:59.000Z

443

Phase matching of high order harmonic generation using dynamic phase modulation caused by a non-collinear modulation pulse  

DOE Patents [OSTI]

Phase matching high harmonic generation (HHG) uses a single, long duration non-collinear modulating pulse intersecting the driving pulse. A femtosecond driving pulse is focused into an HHG medium (such as a noble gas) to cause high-harmonic generation (HHG), for example in the X-ray region of the spectrum, via electrons separating from and recombining with gas atoms. A non-collinear pulse intersects the driving pulse within the gas, and modulates the field seen by the electrons while separated from their atoms. The modulating pulse is low power and long duration, and its frequency and amplitude is chosen to improve HHG phase matching by increasing the areas of constructive interference between the driving pulse and the HHG, relative to the areas of destructive interference.

Cohen, Oren (Boulder, CO); Kapteyn, Henry C. (Boulder, CO); Mumane, Margaret M. (Boulder, CO)

2010-02-16T23:59:59.000Z

444

Anisotropy of flow and the order of phase transition in relativistic heavy ion collisions  

E-Print Network [OSTI]

Using a hydrodynamical model we study how the order of phase transition in the equation of state of strongly interacting matter affects single particle spectra, elliptic flow and higher order anisotropies in Au+Au collisions at RHIC (sqrt{s_NN}=200 GeV energy). We find that the single particle spectra are independent of the order of phase transition and that the fourth harmonic v_4(p_T) shows only a weak dependence in the p_T region where hydrodynamics is expected to work. The differential elliptic flow, v_2(p_T), of baryons shows the strongest dependence on equation of state. Surprisingly the closest fit to data was obtained when the equation of state had a strong first order phase transition and a lattice inspired equation of state fits the data as badly as a purely hadronic equation of state.

P. Huovinen

2005-05-12T23:59:59.000Z

445

Phase-Space Description of Momentum Spectra in Relativistic Heavy-Ion Collisions  

E-Print Network [OSTI]

We consider a phase-space model for particle production in nuclear collisions. Once the multiplicities of the individual particle species are known, single-inclusive momentum spectra can be computed after making simplifying assumptions for the matrix element for multiparticle production. Comparison of the calculated spectra with data for pions and kaons from central Pb+Pb collisions at E_{Lab}=158 AGeV reveals a residual longitudinal phase-space dominance in the final state of the reaction. We account for this by modifying the isotropic, relativistic invariant phase space in a way which retains boost invariance in beam direction but suppresses large transverse momenta. Adjusting a single parameter, we obtain a reasonably good description of transverse momentum and rapidity spectra for both pions and kaons.

Deinet, W; Deinet, Werner; Rischke, Dirk H.

2006-01-01T23:59:59.000Z

446

Phase Errors and the Capture Effect  

SciTech Connect (OSTI)

This slide-show presents analysis of spectrograms and the phase error of filtered noise in a signal. When the filtered noise is smaller than the signal amplitude, the phase error can never exceed 90{deg}, so the average phase error over many cycles is zero: this is called the capture effect because the largest signal captures the phase and frequency determination.

Blair, J., and Machorro, E.

2011-11-01T23:59:59.000Z

447

Woods In and Around Towns: Phase II  

E-Print Network [OSTI]

Policy WIAT Woods In and Around Towns: Phase II #12;2 | Woods In and Around Towns: Phase II working with Forestry Commission Scotland on Woods In and Around Towns #12;Woods In and Around Towns: Phase II Woods In and Around Towns: Phase II | 3 What is this about? The Woods In and Around Towns (WIAT) Programme provides

448

Phase and birefringence aberration correction  

DOE Patents [OSTI]

A Brillouin enhanced four wave mixing phase conjugate mirror corrects phase aberrations of a coherent electromagnetic beam and birefringence induced upon that beam. The stimulated Brillouin scattering (SBS) phase conjugation technique is augmented to include Brillouin enhanced four wave mixing (BEFWM). A seed beam is generated by a main oscillator which arrives at the phase conjugate cell before the signal beams in order to initiate the Brillouin effect. The signal beam which is being amplified through the amplifier chain is split into two perpendicularly polarized beams. One of the two beams is chosen to be the same polarization as some component of the seed beam, the other orthogonal to the first. The polarization of the orthogonal beam is then rotated 90.degree. such that it is parallel to the other signal beam. The three beams are then focused into cell containing a medium capable of Brillouin excitation. The two signal beams are focused such that they cross the seed beam path before their respective beam waists in order to achieve BEFWM or the two signal beams are focused to a point or points contained within the focused cone angle of the seed beam to achieve seeded SBS, and thus negate the effects of all birefringent and material aberrations in the system.

Bowers, Mark (Modesto, CA); Hankla, Allen (Livermore, CA)

1996-01-01T23:59:59.000Z

449

Two Flavour QCD Phase Transition  

E-Print Network [OSTI]

Results on the phase transition in QCD with two flavours of light staggered fermions from an ongoing simulation are presented. We find the restoration of the chiral SU(2) x SU(2) symmetry, but not of the axial U_A(1) symmetry.

G. Boyd; F. Karsch; E. Laermann; M. Oevers

1996-07-20T23:59:59.000Z

450

Simulating mixed-phase Arctic stratus clouds: sensitivity to ice initiation mechanisms  

SciTech Connect (OSTI)

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during 9th-10th October, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-h simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and undersaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, Igor; Sednev, I.; Menon, S.; McFarquhar, G.

2008-02-18T23:59:59.000Z

451

Simulating mixed-phase Arctic stratus clouds: Sensitivity to ice initiationmechanisms  

SciTech Connect (OSTI)

The importance of Arctic mixed-phase clouds on radiation and the Arctic climate is well known. However, the development of mixed-phase cloud parameterization for use in large scale models is limited by lack of both related observations and numerical studies using multidimensional models with advanced microphysics that provide the basis for understanding the relative importance of different microphysical processes that take place in mixed-phase clouds. To improve the representation of mixed-phase cloud processes in the GISS GCM we use the GISS single-column model coupled to a bin resolved microphysics (BRM) scheme that was specially designed to simulate mixed-phase clouds and aerosol-cloud interactions. Using this model with the microphysical measurements obtained from the DOE ARM Mixed-Phase Arctic Cloud Experiment (MPACE) campaign in October 2004 at the North Slope of Alaska, we investigate the effect of ice initiation processes and Bergeron-Findeisen process (BFP) on glaciation time and longevity of single-layer stratiform mixed-phase clouds. We focus on observations taken during October 9th-10th, which indicated the presence of a single-layer mixed-phase clouds. We performed several sets of 12-hour simulations to examine model sensitivity to different ice initiation mechanisms and evaluate model output (hydrometeors concentrations, contents, effective radii, precipitation fluxes, and radar reflectivity) against measurements from the MPACE Intensive Observing Period. Overall, the model qualitatively simulates ice crystal concentration and hydrometeors content, but it fails to predict quantitatively the effective radii of ice particles and their vertical profiles. In particular, the ice effective radii are overestimated by at least 50%. However, using the same definition as used for observations, the effective radii simulated and that observed were more comparable. We find that for the single-layer stratiform mixed-phase clouds simulated, process of ice phase initiation due to freezing of supercooled water in both saturated and subsaturated (w.r.t. water) environments is as important as primary ice crystal origination from water vapor. We also find that the BFP is a process mainly responsible for the rates of glaciation of simulated clouds. These glaciation rates cannot be adequately represented by a water-ice saturation adjustment scheme that only depends on temperature and liquid and solid hydrometeors contents as is widely used in bulk microphysics schemes and are better represented by processes that also account for supersaturation changes as the hydrometeors grow.

Sednev, I.; Menon, S.; McFarquhar, G.

2009-04-10T23:59:59.000Z

452

Fast recognition of single molecules based on single-event photon statistics  

SciTech Connect (OSTI)

Mandel's Q parameter, which is determined from single-event photon statistics, provides an alternative way to recognize single molecules with fluorescence detection, other than the second-order correlation function. It is shown that the Q parameter of an assumed ideal double-molecule fluorescence with the same average photon number as that of the sample fluorescence can act as the criterion for single-molecule recognition. The influence of signal-to-background ratio and the error estimates for photon statistics are also presented. We have applied this method to ascertain single Cy5 dye molecules within hundreds of milliseconds.

Dong Shuangli; Huang Tao; Liu Yuan; Wang Jun; Zhang Guofeng; Xiao Liantuan; Jia Suotang [State Key Laboratory of Quantum Optics and Quantum Optics Devices, College of Physics and Electronics Engineering, Shanxi University, Taiyuan, 030006 (China)

2007-12-15T23:59:59.000Z

453

Pseudo-Single-Bunch Expands Experimental Scope  

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

Pseudo-Single-Bunch Expands Experimental Scope Print Pseudo-Single-Bunch Expands Experimental Scope Print Initial tests of a new pseudo-single-bunch (PSB) operational mode at the ALS have shown promising results-PSB would vastly expand the facility's capacity to carry out dynamics and time-of-flight experiments with a major reduction in sample damage. In PSB operation, a single electron bunch is displaced transversely from the other electron bunches circulating in the storage ring. Experiments that require light emitted only from a single bunch can stop the light emitted from the other bunches using a collimator. Other beamlines would only see a small reduction in flux due to the displaced bunch. As a result, PSB complements the scheduling of multibunch and timing experiments-currently, the ALS only offers these capabilities for four weeks out of its yearly operating schedule. With PSB operation, the ability to conduct time-of-flight experiments could be available year-round.

454

Pseudo-Single-Bunch Expands Experimental Scope  

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

Pseudo-Single-Bunch Expands Experimental Scope Print Pseudo-Single-Bunch Expands Experimental Scope Print Initial tests of a new pseudo-single-bunch (PSB) operational mode at the ALS have shown promising results-PSB would vastly expand the facility's capacity to carry out dynamics and time-of-flight experiments with a major reduction in sample damage. In PSB operation, a single electron bunch is displaced transversely from the other electron bunches circulating in the storage ring. Experiments that require light emitted only from a single bunch can stop the light emitted from the other bunches using a collimator. Other beamlines would only see a small reduction in flux due to the displaced bunch. As a result, PSB complements the scheduling of multibunch and timing experiments-currently, the ALS only offers these capabilities for four weeks out of its yearly operating schedule. With PSB operation, the ability to conduct time-of-flight experiments could be available year-round.

455

Pseudo-Single-Bunch Expands Experimental Scope  

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

Pseudo-Single-Bunch Expands Experimental Scope Print Pseudo-Single-Bunch Expands Experimental Scope Print Initial tests of a new pseudo-single-bunch (PSB) operational mode at the ALS have shown promising results-PSB would vastly expand the facility's capacity to carry out dynamics and time-of-flight experiments with a major reduction in sample damage. In PSB operation, a single electron bunch is displaced transversely from the other electron bunches circulating in the storage ring. Experiments that require light emitted only from a single bunch can stop the light emitted from the other bunches using a collimator. Other beamlines would only see a small reduction in flux due to the displaced bunch. As a result, PSB complements the scheduling of multibunch and timing experiments-currently, the ALS only offers these capabilities for four weeks out of its yearly operating schedule. With PSB operation, the ability to conduct time-of-flight experiments could be available year-round.

456

Fluid Phase Equilibria 218 (2004) 221228 Phase equilibrium in aqueous two-phase systems containing ethylene  

E-Print Network [OSTI]

ethylene oxide­propylene oxide block copolymers and dextran Eduardo dos Santos Tadaa, Watson Loha,1, Pedro equilibrium of aqueous two-phase systems containing the polysaccharide dextran and ethylene oxide (EO; Data; Dextran; Ethylene oxide­propylene oxide block copolymers; Gibbs energy; Thermodynamic modeling 1

Loh, Watson

457

Aging and Phase Stability of Waste Package Outer Barrier  

SciTech Connect (OSTI)

This report was prepared in accordance with ''Technical Work Plan for: Regulatory Integration Modeling and Analysis of the Waste Form and Waste Package'' (BSC 2004 [DIRS 171583]). This report provides information on the phase stability of Alloy 22, the current waste package outer barrier material. The goal of this model is to determine whether the single-phase solid solution is stable under repository conditions and, if not, how fast other phases may precipitate. The aging and phase stability model, which is based on fundamental thermodynamic and kinetic concepts and principles, will be used to provide predictive insight into the long-term metallurgical stability of Alloy 22 under relevant repository conditions. The results of this model are used by ''General Corrosion and Localized Corrosion of Waste Package Outer Barrier'' as reference-only information. These phase stability studies are currently divided into three general areas: Tetrahedrally close-packed (TCP) phase and carbide precipitation in the base metal; TCP and carbide precipitation in welded samples; and Long-range ordering reactions. TCP-phase and carbide precipitates that form in Alloy 22 are generally rich in chromium (Cr) and/or molybdenum (Mo) (Raghavan et al. 1984 [DIRS 154707]). Because these elements are responsible for the high corrosion resistance of Alloy 22, precipitation of TCP phases and carbides, especially at grain boundaries, can lead to an increased susceptibility to localized corrosion in the alloy. These phases are brittle and also tend to embrittle the alloy (Summers et al. 1999 [DIRS 146915]). They are known to form in Alloy 22 at temperatures greater than approximately 600 C. Whether these phases also form at the lower temperatures expected in the repository during the 10,000-year regulatory period must be determined. The kinetics of this precipitation will be determined for both the base metal and the weld heat-affected zone (HAZ). The TCP phases (P, {mu}, and {sigma}) are present in the weld metal in the as-welded condition. It may be possible to eliminate these phases through a solution anneal heat treatment, but that may not be possible for the closure weld because the spent nuclear fuel cladding cannot be heated to more than 350 C. The effects of any stress mitigation techniques (such as laser peening or solution heat treating) that may be used to reduce the tensile stresses on the closure welds must also be determined. Cold-work will cause an increase in dislocation density, and such an increase in dislocation density may cause an increase in diffusion rates that control precipitation kinetics (Porter et al. 1992 [DIRS 161265]; Tawancy et al. 1983 [DIRS 104991]). Long-range order (LRO) occurs in nickel (Ni)-Cr-Mo alloys (such as Alloy 22) at temperatures less than approximately 600 C. This ordering has been linked to an increased susceptibility of Ni-Cr-Mo alloys to stress corrosion cracking and hydrogen embrittlement (Tawancy et al. 1983 [DIRS 104991]). These analyses provide information on the rate at which LRO may occur in Alloy 22 under repository conditions. Determination of the kinetics of transformations through experimental techniques requires that the transformations being investigated be accelerated due to the fact that the expected service life is at least 10,000 years. Phase transformations are typically accelerated through an increase in temperature. The rate of transformation is determined at the higher temperature and is extrapolated to the lower temperatures of interest.

F. Wong

2004-09-28T23:59:59.000Z

458

Tools for Single-Molecule Sequence Detection and Manipulation  

E-Print Network [OSTI]

J. & Smith, D. E. Single-molecule studies of DNA mechanics.polymer physics at the single-molecule level. Phil. Trans.Block, S. High-Resolution, Single-Molecule Measurements of

Zohar, Hagar

2011-01-01T23:59:59.000Z

459

Scaffolding Carbon Nanotubes into Single-Molecule Circuitry  

E-Print Network [OSTI]

carbon nanotubes as single-molecule biosensors. Nano Lett.1990). S.N. Xie: Single-molecule approach to enzymology.improvements to the single molecule oxidation of carbon

Collins, Philip G

2008-01-01T23:59:59.000Z

460

Single Molecule and Synthetic Biology Studies of Transcription  

E-Print Network [OSTI]

R.J. et al. Single-molecule study of transcriptional pausingBustamante, C. Single molecule transcription elongation.RNA polymerase. A single-molecule view of the transcription

Zamft, Bradley Michael

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "time-of-day single phase" 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

Single-molecule reactions and spectroscopy via vibrational excitation  

Science Journals Connector (OSTI)

...J. Kelly and R. E. Palmer Single-molecule reactions and spectroscopy via...Inelastic Tunnelling|Vibration|Single Molecule|Scanning Tunnelling Microscopy (Stm)| Single-molecule reactions and spectroscopy via...

2004-01-01T23:59:59.000Z

462

Single-molecule studies of DNA dynamics and intermolecular forces  

E-Print Network [OSTI]

forces imposed on a single molecule in a concentratedOF THE DISSERTATION Single-Molecule Studies of DNA DynamicsRecently developed single-molecule techniques, which allow

Robertson, Rae Marie

2007-01-01T23:59:59.000Z

463

Single-Molecule Lysozyme Dynamics Monitored by an Electronic Circuit  

E-Print Network [OSTI]

Chem. B 38. S. N. Xie, Single Molecules 2, 229 (2001). 39.Technol. 26, 1338 (2010). Single-Molecule Lysozyme Dynamicsprobe the dynamics of single molecules (1) and overcome the

Collins, Philip G

2012-01-01T23:59:59.000Z

464

Biology and polymer physics at the single–molecule level  

Science Journals Connector (OSTI)

...Olmsted Biology and polymer physics at the single-molecule level Steven Chu Department of Physics...be hidden from view can be clearly seen in single-molecule experiments. single-molecule biology|polymer dynamics|biological physics...

2003-01-01T23:59:59.000Z

465

Optimal Statistical Methods for Analysis of Single-Molecule Data  

E-Print Network [OSTI]

5 Application to Single Molecule Trajectories 5.1 Maximum13 Methods and Materials 13.1 A server-based single-moleculeto-End Distance on Single-Molecule Experi- ment Time Scales

Watkins, Lucas

2009-01-01T23:59:59.000Z

466

What are single photons good for?  

E-Print Network [OSTI]

In a long-held preconception, photons play a central role in present-day quantum technologies. But what are sources producing photons one by one good for precisely? Well, in opposition to what many suggest, we show that single-photon sources are not helpful for point to point quantum key distribution because faint laser pulses do the job comfortably. However, there is no doubt about the usefulness of sources producing single photons for future quantum technologies. In particular, we show how single-photon sources could become the seed of a revolution in the framework of quantum communication, making the security of quantum key distribution device independent or extending quantum communication over many hundreds of kilometers. Hopefully, these promising applications will provide a guideline for researchers to develop more and more efficient sources, producing narrowband, pure and indistinguishable photons at appropriate wavelengths.

Nicolas Sangouard; Hugo Zbinden

2012-02-02T23:59:59.000Z

467

Single molecule studies of DNA mismatch repair  

Science Journals Connector (OSTI)

Abstract DNA mismatch repair, which involves is a widely conserved set of proteins, is essential to limit genetic drift in all organisms. The same system of proteins plays key roles in many cancer related cellular transactions in humans. Although the basic process has been reconstituted in vitro using purified components, many fundamental aspects of DNA mismatch repair remain hidden due in part to the complexity and transient nature of the interactions between the mismatch repair proteins and DNA substrates. Single molecule methods offer the capability to uncover these transient but complex interactions and allow novel insights into mechanisms that underlie DNA mismatch repair. In this review, we discuss applications of single molecule methodology including electron microscopy, atomic force microscopy, particle tracking, FRET, and optical trapping to studies of DNA mismatch repair. These studies have led to formulation of mechanistic models of how proteins identify single base mismatches in the vast background of matched DNA and signal for their repair.

Dorothy A. Erie; Keith R. Weninger

2014-01-01T23:59:59.000Z

468

Development of single crystal filaments. Final report  

SciTech Connect (OSTI)

The program just completed addresses a route to a more efficient longer-lasting electric light bulb filament. All current filaments for light bulbs are metallic in nature. They are subject to embrittlement with age (large grain growth) and relatively high vapor pressures which limits their operating temperature. There is evidence which suggests advantages to using high temperature refractory single crystal fibers as a filament for a light bulb. These refractory materials may include materials such as hafnium or tantalum carbide which have melting points about 500{degrees}C higher than tungsten. Another advantage is that single crystal fibers have a very high degree of crystalline perfection with very few voids and dislocations. Without these imperfections, the atomic mobility at high temperatures is highly restricted. Thus single crystal fibers are very stable at high temperature and will last longer. The efficiencies result from running these single crystal ceramic fiber filaments at higher temperatures and the higher emissivity of the carbide filaments compared to tungsten. The amount of visible light is proportional to the 4the power of the temperature thus a 500{degrees}C higher operating give about a 3-fold increase in radiation in the visible range. The program accomplishments can be summarized as follows: (1) Single crystal fibers of JfC sufficient crystal quality for light bulb filament applications were made. (2) The HfC fiber furnace growth chamber, power control and data collection system was developed for the laboratory scale plant. (3) method for mounting and apparatuses for testing the single crystal fiber filaments were developed and built.

Milewski, J.V.; Shoultz, R.A.; Bourque-McConnell, M.M.

1995-04-01T23:59:59.000Z

469

PhaseII1.PDF  

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

Stakeholder Meeting Stakeholder Meeting DOE-NETL Proposed Phase II Large Scale Mercury Control Technology Field Testing Program September 12, 2002 Meeting Summary A meeting was held in Arlington, VA on September 12 on DOE-NETL's plans to go forward with a second phase of field testing of advanced mercury control technology. The meeting was held in conjunction with the Air Quality III Conference and was attended by approximately 53 representatives from the coal and electric-utility industries, technology developers, EPA, and other interested parties (see attached attendees list). Scott Renninger provided a brief overview of DOE-NETL's current mercury field testing program. A summary of the results from an earlier stakeholder meeting held in Washington on June 4 were also presented as a starting point for discussion to help

470

Coherent Phase Argument for Inflation  

E-Print Network [OSTI]

Cosmologists have developed a phenomenally successful picture of structure in the universe based on the idea that the universe expanded exponentially in its earliest moments. There are three pieces of evidence for this exponential expansion -- {\\it inflation} -- from observations of anisotropies in the cosmic microwave background. First, the shape of the primordial spectrum is very similar to that predicted by generic inflation models. Second, the angular scale at which the first acoustic peak appears is consistent with the flat universe predicted by inflation. Here I describe the third piece of evidence, perhaps the most convincing of all: the phase coherence needed to account for the clear peak/trough structure observed by the WMAP satellite and its predecessors. I also discuss alternatives to inflation that have been proposed recently and explain how they produce coherent phases.

Scott Dodelson

2003-09-05T23:59:59.000Z

471

Phase transformations in engineering materials  

SciTech Connect (OSTI)

Phase transformations in engineering materials are inevitably related to mechanical behavior and are often precursors to residual stress and distortion. Neutron scattering in general is a valuable tool for studying their effects, and pulsed neutrons are of special value, because of the inherently comprehensive crystallographic coverage they provide in each measurement. At the Manuel Lujan neutron scattering center several different research programs have addressed the relationships between phase transformation/mechanical behavior and residual strains. Three disparate examples are presented; (1) stress induced transformation in a NiTi shape memory alloy, (2) cryogenically induced transformation in a quenched 5180 steel, and (3) time resolved evolution of strain induced martensite in 304 stainless steel. In each case a brief description of the principle result will be discussed in the context of using neutrons for the measurement.

Bourke, M.A.M.; Lawson, A.C. [Los Alamos National Lab., NM (United States); Dunand, D.C. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Materials Science and Engineering; Priesmeyer, H.G. [GKSS-Forschungszentrum Geesthacht GmbH (Germany)

1996-06-01T23:59:59.000Z

472

Is the beta phase maximal?  

SciTech Connect (OSTI)

indicates that 2|Vub / Vcb/ Vus| = (1-z) with z given by z = 0.19 +(-) 0.14. This fact implies that irrespective of the form of the quark Yukawa matrices, the measured value of the SM CP phase beta is approximately the maximum allowed by the measured absolute values of the CKM elements. This is beta = pi/6 - z/sqrt{3} for gamma = pi/3 + z/sqrt{3}, which implies alpha = pi/2. Alternatively, assuming that beta is exactly maximal and using the experimental measurement, sin(2beta) = 0.726+(-) 0.037, the phase gamma is predicted to be gamma = pi/2 - beta = 66.3 +(-) 1.7. The maximality of beta, if confirmed by the near-future experiments, may give us some clues as to the origin of CP violation.

Ferrandis, Javier; Ferrandis, Javier

2005-04-20T23:59:59.000Z

473

Light-driven phase shifter  

DOE Patents [OSTI]

A light-driven phase shifter is provided for modulating a transmission light beam. A gaseous medium such as argon is provided with electron energy states excited to populate a metastable state. A tunable dye laser is selected with a wavelength effective to deplete the metastable electron state and may be intensity modulated. The dye laser is directed through the gaseous medium to define a first optical path having an index of refraction determined by the gaseous medium having a depleted metastable electron state. A transmission laser beam is also directed through the gaseous medium to define a second optical path at least partially coincident with the first optical path. The intensity of the dye laser beam may then be varied to phase modulate the transmission laser beam.

Early, James W. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

474

Agent review phase one report.  

SciTech Connect (OSTI)

This report summarizes the findings for phase one of the agent review and discusses the review methods and results. The phase one review identified a short list of agent systems that would prove most useful in the service architecture of an information management, analysis, and retrieval system. Reviewers evaluated open-source and commercial multi-agent systems and scored them based upon viability, uniqueness, ease of development, ease of deployment, and ease of integration with other products. Based on these criteria, reviewers identified the ten most appropriate systems. The report also mentions several systems that reviewers deemed noteworthy for the ideas they implement, even if those systems are not the best choices for information management purposes.

Zubelewicz, Alex Tadeusz; Davis, Christopher Edward; Bauer, Travis LaDell

2009-12-01T23:59:59.000Z

475

ICCS Area 2, Phase 2 Renewal Applications  

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

10, 2010 10, 2010 1. When does Phase II start date? Assume July 1? Answer: Per the FOA, "Projects that are selected for Phase 2 will receive no more than a 4 month extension to Phase 1 to allow DOE and the Phase 2 Recipient(s) sufficient time to negotiate the full scope and budget for Phase 2. DOE reserves the right to award Phase 2 anytime during this 4 month period". DOE will not extend a Phase 1 project beyond September 30, 2010; therefore, it is likely that no more than a 3 month extension will be provided. Further, depending upon the positive cooperation and responsiveness of the Phase 2 Recipient, DOE will be able to make the full Phase 2 award more quickly. Any start date proposed by the Recipient is subject to negotiation with DOE if the project is selected.

476

Sensory gating in intracranial recordings — The role of phase locking  

Science Journals Connector (OSTI)

For patients with schizophrenia, a deficient gating (or filtering) of sensory input has been described. One major approach to study this sensory gating is to measure event-related potentials (ERPs) in response to paired clicks. In these experiments, sensory gating is quantified as amplitude reduction of the ERP components P50 and N100 from the 1st to the 2nd stimulus. In ERP studies brain electrical signals are averaged over single trials. Alterations in phase locking might be one factor contributing to the observed deficits in sensory gating, but findings have been inconclusive as yet. In particular, the contribution of different frequency bands to the deficit required further investigation. We studied N100 gating by intracranial recordings in a sample of epilepsy patients and subdivided the group into good and poor gators of the intracranial ERP component N100. Data were evaluated by frequency specific wavelet-based phase and power analyses. Poor N100 gators had an increased phase locking in the frequency range from 6.0–15.1 Hz after the 2nd stimulus, as compared to good gators. Other group differences were apparent already before the 2nd stimulus. Poor gators had less phase locked beta band activity (20.2–30.0 Hz) than good gators 200–315 ms after the onset of the 1st stimulus. Within the group of poor gators, lower values of phase locking in this frequency range were also associated with lower gating ratios. The reduced beta band response in response to the 1st stimulus may reflect poorer memory encoding of the 1st stimulus in poor gators. This in turn might lead to increased demands to process the 2nd stimulus.

Timm Rosburg; Peter Trautner; Jürgen Fell; Karen Anne Moxon; Christian E. Elger; Nash N. Boutros

2009-01-01T23:59:59.000Z

477

Hydrogenation of single-walled carbon nanotubes  

E-Print Network [OSTI]

Towards the development of a useful mechanism for hydrogen storage, we have studied the hydrogenation of single-walled carbon nanotubes with atomic hydrogen using core-level photoelectron spectroscopy and x-ray absorption spectroscopy. We find that atomic hydrogen creates C-H bonds with the carbon atoms in the nanotube walls and such C-H bonds can be com-pletely broken by heating to 600 oC. We demonstrate approximately 65+/-15 at % hydrogenation of carbon atoms in the single-walled carbon nanotubes which is equivalent to 5.1+/-1.2 weight % hydrogen capacity. We also show that the hydrogenation is a reversible process.

Anton Nikitin; Hirohito Ogasawara; David Mann; Reinhard Denecke; Zhiyong Zhang; Hongjie Dai; KJ Cho; Anders Nilsson

2005-10-14T23:59:59.000Z

478

Electronic conduction through single crystals of polyethylene  

E-Print Network [OSTI]

May, 1966 Major Subjects Physics ELECTRONIC CONDUCTION THROUGH SINGLE CRYSTRLS OF POLYETHYLENE k Thesis By Gerald Maurice Samson Approved as to style and content by: naen of the Committee ad of the D artment ber ber c- The autho. u... talc o Polyot! ylone . -y, i'oo Gerald !':cur"' co Samson Directed by: Zr. Joe S. The predominant conduction mechani m through single cryo' mls op polyethylene is shown to be Schott!cy ( hernal) oui "sion . or tompora- o tu. es - bove 0 C. . "or...

Samson, Gerald Maurice

1966-01-01T23:59:59.000Z

479

Ghost imaging with a single detector  

SciTech Connect (OSTI)

We experimentally demonstrate pseudothermal ghost imaging and ghost diffraction using only a single detector. We achieve this by replacing the high-resolution detector of the reference beam with a computation of the propagating field, following a recent proposal by Shapiro [Phys. Rev. A 78, 061802(R) (2008)]. Since only a single detector is used, this provides experimental evidence that pseudothermal ghost imaging does not rely on nonlocal quantum correlations. In addition, we show the depth-resolving capability of this ghost imaging technique.

Bromberg, Yaron; Katz, Ori; Silberberg, Yaron [Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100 (Israel)

2009-05-15T23:59:59.000Z

480

A single ion inside a miniature cavity  

E-Print Network [OSTI]

understanding of nature. For instance, Joseph von Fraunhofer’s observation of absorption-lines in the optical spectrum of the Sun was crucial for the development of Rydberg’s formula and Bohr’s atomic model. However, under normal conditions the light... the prescribed word limit of 60’000 words. Abstract A Single Ion Inside a Miniature Cavity This thesis describes the first experimentally achieved coupling of a single atomic ion to an optical fibre-cavity as well as the first photonic interaction between a...

Steiner, Matthias

2014-04-08T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
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481

Life at the Single Molecule Level  

SciTech Connect (OSTI)

In a living cell, gene expression—the transcription of DNA to messenger RNA followed by translation to protein—occurs stochastically, as a consequence of the low copy number of DNA and mRNA molecules involved. Can one monitor these processes in a living cell in real time? How do cells with identical genes exhibit different phenotypes? Recent advances in single-molecule imaging in living bacterial cells allow these questions to be answered at the molecular level in a quantitative manner. It was found that rare events of single molecules can have important biological consequences.

Xie, Xiaoliang Sunny (Harvard) [Harvard

2011-03-04T23:59:59.000Z

482

Phase change material storage heater  

DOE Patents [OSTI]

A storage heater for storing heat and for heating a fluid, such as water, has an enclosure defining a chamber therein. The chamber has a lower portion and an upper portion with a heating element being disposed within the enclosure. A tube through which the fluid flows has an inlet and an outlet, both being disposed outside of the enclosure, and has a portion interconnecting the inlet and the outlet that passes through the enclosure. A densely packed bed of phase change material pellets is disposed within the enclosure and is surrounded by a viscous liquid, such as propylene glycol. The viscous liquid is in thermal communication with the heating element, the phase change material pellets, and the tube and transfers heat from the heating element to the pellets and from the pellets to the tube. The viscous fluid has a viscosity so that the frictional pressure drop of the fluid in contact with the phase change material pellets substantially reduces vertical thermal convection in the fluid. As the fluid flows through the tube heat is transferred from the viscous liquid to the fluid flowing through the tube, thereby heating the fluid.

Goswami, D. Yogi (Gainesville, FL); Hsieh, Chung K. (Gainesville, FL); Jotshi, Chand K. (Gainesville, FL); Klausner, James F. (Gainesville, FL)

1997-01-01T23:59:59.000Z

483

QCD Phase Transitions, Volume 15  

SciTech Connect (OSTI)

The title of the workshop, ''The QCD Phase Transitions'', in fact happened to be too narrow for its real contents. It would be more accurate to say that it was devoted to different phases of QCD and QCD-related gauge theories, with strong emphasis on discussion of the underlying non-perturbative mechanisms which manifest themselves as all those phases. Before we go to specifics, let us emphasize one important aspect of the present status of non-perturbative Quantum Field Theory in general. It remains true that its studies do not get attention proportional to the intellectual challenge they deserve, and that the theorists working on it remain very fragmented. The efforts to create Theory of Everything including Quantum Gravity have attracted the lion share of attention and young talent. Nevertheless, in the last few years there was also a tremendous progress and even some shift of attention toward emphasis on the unity of non-perturbative phenomena. For example, we have seen some efforts to connect the lessons from recent progress in Supersymmetric theories with that in QCD, as derived from phenomenology and lattice. Another example is Maldacena conjecture and related development, which connect three things together, string theory, super-gravity and the (N=4) supersymmetric gauge theory. Although the progress mentioned is remarkable by itself, if we would listen to each other more we may have chance to strengthen the field and reach better understanding of the spectacular non-perturbative physics.

Schaefer, T.; Shuryak, E.

1999-03-20T23:59:59.000Z

484

Reduction of single-photon emission from a single-emitter system by intersystem crossing  

Science Journals Connector (OSTI)

We investigate the reduction in the probability of single-photon emission from a single-emitter system caused by intersystem crossing. The physical model is that a single-emitter system with three levels is excited by a square pulse laser, and then a single photon is emitted at a controllable time. We find that the intersystem crossing always reduces the probability of single-photon emission. We obtain quantitative and analytical expressions for the probabilities of zero-, one-, and two-photon emission and Mandel's Q parameter as the function of the intersystem crossing rate under the conditions of finite field strength and finite interaction time with the laser pulse. We discuss the conditions for obtaining the maximal probability of single-photon emission in the presence of intersystem crossing. We find that one can obtain a high probability of single-photon emission from the single-emitter system using square pulse excitation in comparison with continuous wave excitation. Mandel's Q parameter exhibits a transition from a sub-Poissonian behavior to a super-Poissonian behavior due to the influence of intersystem crossing. The calculated Mandel's Q parameter and second-order correlation function of photon emission considering the coherent effect are in better agreement with the experimental data.

Yong He and Lin Dai

2014-01-28T23:59:59.000Z

485

Standard Work Specifications for Single-Family Home Energy Upgrades...  

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

for Single-Family Home Energy Upgrades to define the minimum requirements for high- quality residential energy upgrades. The Standard Work Specifications for Single-Family...

486

Single Supported Atoms Participate in Catalytic Processes | ornl...  

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

Functional Materials for Energy Single Supported Atoms Participate in Catalytic Processes December 04, 2014 Pathways for NO oxidation on single Pt atoms supported on the (010)...

487

Transient Dynamometer Testing of a Single Leg NOx Adsorber Combined...  

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

Transient Dynamometer Testing of a Single Leg NOx Adsorber Combined with a Fuel Processor for Enhanced NOx Control Transient Dynamometer Testing of a Single Leg NOx Adsorber...

488

Payer source for single, elderly women in nursing homes.  

E-Print Network [OSTI]

?? This study seeks to determine the payer source for single, elderly women in nursing homes. By determining the payer source for single, elderly women,… (more)

Nakagawa, Sage

2013-01-01T23:59:59.000Z

489

Single-step conversion of cellulose to 5-hydroxymethylfurfural...  

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

Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a versatileplatform chemical. Single-step conversion of cellulose to 5-hydroxymethylfurfural (HMF), a...

490

Single-molecule imaging studies of protein dynamics.  

E-Print Network [OSTI]

??Single-molecule fluorescence imaging is a powerful method for studying biological events. The work of this thesis primarily focuses on single molecule studies of the dynamics… (more)

Zareh, Shannon Kian

2011-01-01T23:59:59.000Z

491

Ponderomotive phase plate for transmission electron microscopes  

DOE Patents [OSTI]

A ponderomotive phase plate system and method for controllably producing highly tunable phase contrast transfer functions in a transmission electron microscope (TEM) for high resolution and biological phase contrast imaging. The system and method includes a laser source and a beam transport system to produce a focused laser crossover as a phase plate, so that a ponderomotive potential of the focused laser crossover produces a scattering-angle-dependent phase shift in the electrons of the post-sample electron beam corresponding to a desired phase contrast transfer function.

Reed, Bryan W. (Livermore, CA)

2012-07-10T23:59:59.000Z

492

Microwave concrete decontamination - Phase II results  

SciTech Connect (OSTI)

This report documents the results of the second phase of a four-phase development program to develop a system to decontaminate concrete using microwave energy. In the first phase of the program the feasibility of using microwaves to remove concrete surfaces was demonstrated. In the first phase experiments, concrete slabs were placed on a translator and moved beneath a stationery microwave system. The second phase demonstrated the ability to mobilize the technology to remove the surfaces from concrete floors. Phases III and IV will further develop the technology to be remotely operated and capable of removing concrete from floors as well as from vertical surfaces.

White, T.L.; Foster, D. Jr.

1994-06-01T23:59:59.000Z

493

Controlling the quantum state of a single photon emitted from a single polariton  

SciTech Connect (OSTI)

We investigate in detail the optimal conditions for a high fidelity transfer from a single-polariton state to a single-photon state and subsequent homodyne detection of the single photon. We assume that, using various possible techniques, the single polariton has initially been stored as a spin-wave grating in a cloud of cold atoms inside a low-finesse cavity. This state is then transferred to a single-photon optical pulse using an auxiliary beam. We optimize the retrieval efficiency and determine the mode of the local oscillator that maximizes the homodyne efficiency of such a photon. We find that both efficiencies can have values close to one in a large region of experimental parameters.

Stanojevic, Jovica; Parigi, Valentina; Bimbard, Erwan; Tualle-Brouri, Rosa; Ourjoumtsev, Alexei; Grangier, Philippe [Laboratoire Charles Fabry, Institut d'Optique, CNRS, Universite Paris-Sud, Campus Polytechnique, RD 128, FR-91127 Palaiseau cedex (France)

2011-11-15T23:59:59.000Z

494

X-ray studies of the phases and phase transitions of liquid crystals  

Science Journals Connector (OSTI)

Recent X-ray diffraction studies of liquid crystals are reviewed. The topics are twist grain-boundary phases, antiferroelectric phases studied using resonant diffraction and smectic phases within gel structures.

Clegg, P.S.

2004-12-22T23:59:59.000Z

495

Characteristics of Photodissociation at 193 nm of Singly Protonated Peptides  

E-Print Network [OSTI]

. With the development of various techniques to generate gas- phase ions from condensed-phase samples] is a use- ful technique to study the structure and fragmen- tation mechanism of gas-phase ions

Kim, Myung Soo

496

SunShot Initiative: Encapsulated Phase Change Material in Thermal Storage  

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

Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants Encapsulated Phase Change Material in Thermal Storage for Baseload CSP Plants Terrafore logo Photo of gray balls grouped together. 10 to 15 millimeter capsules provide high heat transfer surface. Terrafore, under the Baseload CSP FOA, is developing novel encapsulated phase change materials (PCM) for use in thermal storage applications to significantly reduce the LCOE for baseload CSP plants. Approach Terrafore is determining a cost-effective way to produce small 10 mm to 15 mm capsules containing phase change material (PCM salt) in a suitable shell material. Large numbers of these PCM capsules provide high-heat transfer surface and store heat as sensible and latent heat of fusion of salt. The capsules with different PCMs inside the shell are stacked inside a single tank to provide a cascaded storage to effectively use the latent heat of fusion of salts over the solar collection temperature range.

497

Phase structure of an Abelian two-Higgs model and high temperature superconductors  

E-Print Network [OSTI]

We study the phase structure of a three dimensional Abelian Higgs model with singly- and doubly-charged scalar fields coupled to a compact Abelian gauge field. The model is pretending to describe systems of strongly correlated electrons such as high-Tc superconductivity in overdoped regime and exotic phases supporting excitations with fractionalized quantum numbers. We identify the Fermi liquid, the spin gap, the superconductor and the strange metallic phases in which densities and properties of holon and spinon vortices and monopoles are explored. The phase diagram in the 3D coupling space is predicted. We show that at sufficiently strong gauge coupling the spinon-pair and holon condensation transitions merge together and become, unexpectedly, first order.

M. N. Chernodub; E. -M. Ilgenfritz; A. Schiller

2005-12-06T23:59:59.000Z

498

Symmetry groups of single-wall nanotubes  

Science Journals Connector (OSTI)

An approach to the determination of the symmetry groups of structural analogs of single-wall carbon nanotubes using ideas in color symmetry theory is described. The line group structures of the symmetry groups of BN, BC3, BCN and BC2N nanotubes are identified. An extension of the method to address nanotubes with non-hexagonal symmetry is also presented.

De Las Pe?as, M.L.A.N.

2013-11-26T23:59:59.000Z

499

Single Assessment Pass Rate South Carolina  

E-Print Network [OSTI]

Single Assessment Pass Rate South Carolina Academic Year 2000 - 2001 ETS Type of Assessment Test Code Total Pass % Pass Total Pass % Pass Academic Content Area Education in the Elementary School 0010., & Comp.: Essays 0042 Mathematics 0060 1 1 100% 47 45 96% Chemistry, Physics and General Science 0070 5 3

Kasman, Alex

500

Nano-soldering to single atomic layer  

DOE Patents [OSTI]

A simple technique to solder submicron sized, ohmic contacts to nanostructures has been disclosed. The technique has several advantages over standard electron beam lithography methods, which are complex, costly, and can contaminate samples. To demonstrate the soldering technique graphene, a single atomic layer of carbon, has been contacted, and low- and high-field electronic transport properties have been measured.

Girit, Caglar O. (Berkeley, CA); Zettl, Alexander K. (Kensington, CA)

2011-10-11T23:59:59.000Z