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


1

ARM Evaluation Product : Droplet Number Concentration Value-Added Product  

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

Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration, Nd, will increase and droplet size decrease, for a given liquid water path (Twomey 1977), which will greatly affect cloud albedo as smaller droplets reflect more shortwave radiation. However, the magnitude and variability of these processes under different environmental conditions is still uncertain. McComiskey et al. (2009) have implemented a method, based on Boers and Mitchell (1994), for calculating Nd from ground-based remote sensing measurements of optical depth and liquid water path. They show that the magnitude of the aerosol-cloud interactions (ACI) varies with a range of factors, including the relative value of the cloud liquid water path (LWP), the aerosol size distribution, and the cloud updraft velocity. Estimates of Nd under a range of cloud types and conditions and at a variety of sites are needed to further quantify the impacts of aerosol cloud interactions.

Riihimaki, Laura

2

ARM Evaluation Product : Droplet Number Concentration Value-Added Product  

SciTech Connect (OSTI)

Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration, Nd, will increase and droplet size decrease, for a given liquid water path (Twomey 1977), which will greatly affect cloud albedo as smaller droplets reflect more shortwave radiation. However, the magnitude and variability of these processes under different environmental conditions is still uncertain. McComiskey et al. (2009) have implemented a method, based on Boers and Mitchell (1994), for calculating Nd from ground-based remote sensing measurements of optical depth and liquid water path. They show that the magnitude of the aerosol-cloud interactions (ACI) varies with a range of factors, including the relative value of the cloud liquid water path (LWP), the aerosol size distribution, and the cloud updraft velocity. Estimates of Nd under a range of cloud types and conditions and at a variety of sites are needed to further quantify the impacts of aerosol cloud interactions.

Riihimaki, Laura

2014-05-15T23:59:59.000Z

3

ARM - Measurement - Particle number concentration  

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

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4

hal-00205429,version1-16Jan2008 On the number of droplets in aerosols  

E-Print Network [OSTI]

and pollution. Epidemics, radioactive elements can be carried by small droplets; volcanoes generate sulphated aerosols contributing to the destruction of the ozone layer. The planetary atmospheres are charged with such mixtures in suspension. The interaction between oceans and atmosphere generates mixtures of gas and water

Paris-Sud XI, Université de

5

DOE/SC-ARM-TR-140 Droplet Number Concentration Value-Added Product  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct: CrudeOffice ofINL is a U.S. Department of42

6

Levitated droplet dye laser  

E-Print Network [OSTI]

We present the first observation, to our knowledge, of lasing from a levitated, dye droplet. The levitated droplets are created by computer controlled pico-liter dispensing into one of the nodes of a standing ultrasonic wave (100 kHz), where the droplet is trapped. The free hanging droplet forms a high quality optical resonator. Our 750 nL lasing droplets consist of Rhodamine 6G dissolved in ethylene glycol, at a concentration of 0.02 M. The droplets are optically pumped at 532 nm light from a pulsed, frequency doubled Nd:YAG laser, and the dye laser emission is analyzed by a fixed grating spectrometer. With this setup we have achieved reproducible lasing spectra in the visible wavelength range from 610 nm to 650 nm. The levitated droplet technique has previously successfully been applied for a variety of bio-analytical applications at single cell level. In combination with the lasing droplets, the capability of this high precision setup has potential applications within highly sensitive intra-cavity absorban...

Azzouz, H; Balslev, S; Johansson, J; Mortensen, N A; Nilsson, S; Kristensen, A

2006-01-01T23:59:59.000Z

7

A41E-0166: Measurements of the Statistical Relationship between Cloud Base Aerosols and Cloud Droplet Concentrations David J Delene, University of North Dakota (delene@aero.und.edu; http://aerosol.atmos.und.edu)  

E-Print Network [OSTI]

in Saudi Arabia, North Dakota and Mali are analyzed to determine the relationship of below cloud base during the 2007 rainy season in Mali were generally lower than in North Dakota and Saudi Arabia or dust. Saudi Arabia has high aerosol concentration, lots of dust (> 1 µm), and higher cloud droplet

Delene, David J.

8

Self-propulsion of pure water droplets by spontaneous Marangoni stress driven motion  

E-Print Network [OSTI]

We report spontaneous motion in a fully bio-compatible system consisting of pure water droplets in an oil-surfactant medium of squalane and monoolein. Water from the droplet is solubilized by the reverse micellar solution, creating a concentration gradient of swollen reverse micelles around each droplet. The strong advection and weak diffusion conditions allow for the first experimental realization of spontaneous motion in a system of isotropic particles at sufficiently large P\\'eclet number according to a straightforward generalization of a recently proposed mechanism. Experiments with a highly concentrated solution of salt instead of water, and tetradecane instead of squalane, confirm the above mechanism. The present swimming droplets are able to carry external bodies such as large colloids, salt crystals, and even cells.

Ziane Izri; Marjolein N. van der Linden; Sbastien Michelin; Olivier Dauchot

2014-11-12T23:59:59.000Z

9

Compound droplet manipulations on fiber arrays  

E-Print Network [OSTI]

Recent works demonstrated that fiber arrays may constitue the basis of an open digital microfluidics. Various processes, such as droplet motion, fragmentation, trapping, release, mixing and encapsulation, may be achieved on fiber arrays. However, handling a large number of tiny droplets resulting from the mixing of several liquid components is still a challenge for developing microreactors, smart sensors or microemulsifying drugs. Here, we show that the manipulation of tiny droplets onto fiber networks allows for creating compound droplets with a high complexity level. Moreover, this cost-effective and flexible method may also be implemented with optical fibers in order to develop fluorescence-based biosensor.

Weyer, Floriane; Dreesen, Laurent; Vandewalle, Nicolas

2015-01-01T23:59:59.000Z

10

acoustically levitated droplet: Topics by E-print Network  

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

we present detailed study of a laser irradiated droplet containing nanosilica particles. Infrared and High speed imaging of the heating process for different concentrations of...

11

acoustically levitated droplets: Topics by E-print Network  

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

we present detailed study of a laser irradiated droplet containing nanosilica particles. Infrared and High speed imaging of the heating process for different concentrations of...

12

Kinetics of complex plasma with liquid droplets  

SciTech Connect (OSTI)

This paper provides a theoretical basis for the reduction of electron density by spray of water (or other liquids) in hot plasma. This phenomenon has been observed in a hypersonic flight experiment for relief of radio black out, caused by high ionization in the plasma sheath of a hypersonic vehicle, re-entering the atmosphere. The analysis incorporates a rather little known phenomenon for de-charging of the droplets, viz., evaporation of ions from the surface and includes the charge balance on the droplets and number cum energy balance of electrons, ions, and neutral molecules; the energy balance of the evaporating droplets has also been taken into account. The analysis has been applied to a realistic situation and the transient variations of the charge and radius of water droplets, and other plasma parameters have been obtained and discussed. The analysis through made in the context of water droplets is applicable to all liquids.

Misra, Shikha; Sodha, M. S. [Centre of Energy Studies, Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India)] [Centre of Energy Studies, Indian Institute of Technology Delhi (IITD), New Delhi 110016 (India); Mishra, S. K. [Institute for Plasma Research (IPR), Gandhinagar 382428 (India)] [Institute for Plasma Research (IPR), Gandhinagar 382428 (India)

2013-12-15T23:59:59.000Z

13

Droplet-based microfluidics.  

E-Print Network [OSTI]

??In this thesis, the background of both microfluidics and droplet-based microfluidics are first introduced and presented. Next, the objectives and scopes are defined to give (more)

Tan, Say Hwa.

2010-01-01T23:59:59.000Z

14

A13B-0215: Case study of the 9 April 2009 `brown' cloud: Observations of unusually high cloud droplet concentrations in Saudi Arabia, David J Delene, University of North Dakota (delene@aero.und.edu; http://aerosol.atmos.und.edu)  

E-Print Network [OSTI]

' cloud: Observations of unusually high cloud droplet concentrations in Saudi Arabia, David J Delene accumulation on the unprotected leading edge of the aircraft's wing during the 9 April 2009 research in Saudi diameters compared to a normal cell. Cloud base CCN measurements in Saudi Arabia are variable with some

Delene, David J.

15

Universal fluid droplet ejector  

DOE Patents [OSTI]

A droplet generator comprises a fluid reservoir having a side wall made of glass or quartz, and an end cap made from a silicon plate. The end cap contains a micromachined aperture through which the fluid is ejected. The side wall is thermally fused to the end cap, and no adhesive is necessary. This means that the fluid only comes into contact with the side wall and the end cap, both of which are chemically inert. Amplitudes of drive pulses received by reservoir determine the horizontal displacements of droplets relative to the ejection aperture. The drive pulses are varied such that the dropper generates a two-dimensional array of vertically-falling droplets. Vertical and horizontal inter-droplet spacings may be varied in real time. Applications include droplet analysis experiments such as Millikan fractional charge searches and aerosol characterization, as well as material deposition applications. 8 figs.

Lee, E.R.; Perl, M.L.

1999-08-24T23:59:59.000Z

16

Modeling spray impingement using linear stability theories for droplet shattering  

SciTech Connect (OSTI)

This paper compares several linear-theory-based models for droplet shattering employed for simulations of spray impingement on flat wall surface or a circular cylinder. Numerical simulations are conducted using a stochastic separated flow (SSF) technique that includes sub-models for droplet dynamics and impact. Results for spray impingement over a flat wall indicate that the linear theory applicable for a single droplet impact over-predicts the number of satellite (or secondary) droplets upon shattering when compared to experimental data. The causes for the observed discrepancies are discussed. Numerical simulation results for spray impingement over for a circular cylinder in cross flow are obtained and discussed.

DesJardin, Paul Edward; Yoon, Sam Sukgoo

2005-03-01T23:59:59.000Z

17

Oil droplet in alcohol  

E-Print Network [OSTI]

The elegant patterns formed by fluid droplets falling through a dissimilar liquid were first studied over a century ago.1 The emerging patterns are driven by hydrodynamic instabilities set up by velocity and density gradients ...

La Foy, Roderick R.

18

Universal fluid droplet ejector  

DOE Patents [OSTI]

A droplet generator comprises a fluid reservoir having a side wall made of glass or quartz, and an end cap made from a silicon plate. The end cap contains a micromachined aperture through which the fluid is ejected. The side wall is thermally fused to the end cap, and no adhesive is necessary. This means that the fluid only comes into contact with the side wall and the end cap, both of which are chemically inert. Amplitudes of drive pulses received by reservoir determine the horizontal displacements of droplets relative to the ejection aperture. The drive pulses are varied such that the dropper generates a two-dimensional array of vertically-falling droplets. Vertical and horizontal interdroplet spacings may be varied in real time. Applications include droplet analysis experiments such as Millikan fractional charge searches and aerosol characterization, as well as material deposition applications.

Lee, Eric R. (Redwood City, CA); Perl, Martin L. (Palo Alto, CA)

1999-08-24T23:59:59.000Z

19

Comparison of the Vertical Velocity Used to Calculate the Cloud Droplet Number Concentration in a Cloud Resolving and a Global Climate Model  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationCleanCommunity Involvement andMISR, and MODISPd/CeO/Ta/SiComparison

20

Structural morphology of acoustically levitated and heated nanosilica droplet  

SciTech Connect (OSTI)

We study the vaporization and precipitation dynamics of a nanosilica encapsulated water droplet by levitating it acoustically and heating it with a CO{sub 2} laser. For all concentrations, we observe three phases: solvent evaporation, surface agglomeration, and precipitation leading to bowl or ring shaped structures. At higher concentrations, ring reorientation and rotation are seen consistently. The surface temperature from an infrared camera is seen to be dependent on the final geometrical shape of the droplet and its rotation induced by the acoustic field of the levitator. With nonuniform particle distribution, these structures can experience rupture which modifies the droplet rotational speed.

Kumar, Ranganathan; Tijerino, Erick; Saha, Abhishek [Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, Florida 32816 (United States); Basu, Saptarshi [Department of Mechanical Engineering, Indian Institute of Science, 560012 Bangalore (India)

2010-09-20T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Environmental Health Perspectives volume 119 | number 8 | August 2011 1123 Predicting air pollution concentrations at reso-  

E-Print Network [OSTI]

air pollution concentrations at reso- lutions capable of capturing local-scale pollut- ant gradients of approaches may be used to model air pollution over large areas, includ- ing interpolation of fixed use for producing local- scale pollution estimates. Interpolation of fixed-site air pollution

Martin, Randall

22

Chip-based droplet sorting  

DOE Patents [OSTI]

A non-contact system for sorting monodisperse water-in-oil emulsion droplets in a microfluidic device based on the droplet's contents and their interaction with an applied electromagnetic field or by identification and sorting.

Beer, Neil Reginald; Lee, Abraham; Hatch, Andrew

2014-07-01T23:59:59.000Z

23

Spontaneous Charging and Crystallization of Water Droplets in Oil  

E-Print Network [OSTI]

We study the spontaneous charging and the crystallization of spherical micron-sized water-droplets dispersed in oil by numerically solving, within a Poisson-Boltzmann theory in the geometry of a spherical cell, for the density profiles of the cations and anions in the system. We take into account screening, ionic Born self-energy differences between oil and water, and partitioning of ions over the two media. We find that the surface charge density of the droplet as induced by the ion partitioning is significantly affected by the droplet curvature and by the finite density of the droplets. We also find that the salt concentration and the dielectric constant regime in which crystallization of the water droplets is predicted is enhanced substantially compared to results based on the planar oil-water interface, thereby improving quantitative agreement with recent experiments.

Joost de Graaf; Jos Zwanikken; Markus Bier; Arjen Baarsma; Yasha Oloumi; Mischa Spelt; Rene van Roij

2008-07-31T23:59:59.000Z

24

Ultralocalized thermal reactions in subnanoliter droplets-in-air  

E-Print Network [OSTI]

in droplets including hybridization of low copy number DNA molecules, lysing of single cells, interrogation profiles. Previous on-chip, localized heating designs focused on peltier heaters, resistive heaters

Bashir, Rashid

25

Synchronous Droplet Microfluidics: One "Clock" to rule them all  

E-Print Network [OSTI]

Controlling fluid droplets efficiently in the microscale is of great interest both from a basic science and a technology perspective. We have designed and developed a general-purpose, highly scalable microfluidic control strategy through a single global clock signal that enables synchronous control of arbitrary number of droplets in a planar geometry. A rotating precessive magnetic field provides a global clock signal, enabling simultaneous control of droplet position, velocity and trajectories. Here, in this fluid dynamics video, we explain the main physics of this new microfluidic concept. Video data from droplets moving in sync in different fluidic circuits are included. The experimental setup is described and video data is analyzed to provide a detailed view of the time-dynamics of propagating droplets. Finally, we explore the operational limits of this concept, scaling and phase diagram with physical regime diagram.

Katsikis, Georgios

2013-01-01T23:59:59.000Z

26

Hovering UFO Droplets  

E-Print Network [OSTI]

This fluid dynamics video is an entry for the Gallery of Fluid Motion of the 65th Annual Meeting of the APS-DFD. This video shows behavior of condensing droplets on a lubricant impregnated surface and a comparison with a superhydrophobic surface. On impregnated surfaces, drops appear like UFOs hovering over a surface. The videos were recorded in an Environmental SEM and a specially built condensation rig.

Anand, Sushant; Dhiman, Rajeev; Smith, J David; Varanasi, Kripa K

2012-01-01T23:59:59.000Z

27

Oscillatory Flame Response in Acoustically Coupled Fuel Droplet Combustion  

E-Print Network [OSTI]

CombustionCombustion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Coupled Droplet Combustion . . . . . . . . . . . . Burning

Sevilla Esparza, Cristhian Israel

2013-01-01T23:59:59.000Z

28

VOLUME 82, NUMBER 15 P H Y S I C A L R E V I E W L E T T E R S 12 APRIL 1999 Breaking Faraday Waves: Critical Slowing of Droplet Ejection Rates  

E-Print Network [OSTI]

with droplets and spray. This is significant to understanding a broad class of two-phase flows as well of a dimensionless frequency [v vn3 s r 2 , where n is the kinematic viscosity, s is the sur- face tension, and r the threshold depends only on forcing fre- quency and viscosity. This acceleration threshold was dif- ficult

Lathrop, Daniel P.

29

VOLUME 78, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 17 FEBRUARY 1997 Coalescence and Droplets in the Subcritical Nonlinear Schrdinger Equation  

E-Print Network [OSTI]

and Droplets in the Subcritical Nonlinear Schrödinger Equation Christophe Josserand and Sergio Rica a "subcritical" conservative dynamic. The physics observed in the numerics is very analogous to the formation by subcritical nonvariational instabilities were discovered some time ago by Thual and Fauve [5] and studied

30

Production Mechanism, Number Concentration, Size Distribution, Chemical Composition, and Optical Properties of Sea Spray Aerosols Workshop, Summer 2012  

SciTech Connect (OSTI)

The objective of this workshop was to address the most urgent open science questions for improved quantification of sea spray aerosol-radiation-climate interactions. Sea spray emission and its influence on global climate remains one of the most uncertain components of the aerosol-radiation-climate problem, but has received less attention than other aerosol processes (e.g. production of terrestrial secondary organic aerosols). Thus, the special emphasis was placed on the production flux of sea spray aerosol particles, their number concentration and chemical composition and properties.

Meskhidze, Nicholas [NCSU] [NCSU

2013-10-21T23:59:59.000Z

31

Models for liquid droplet dynamics  

E-Print Network [OSTI]

by FLACS . . . . . . . 14 . . . . 15 . . . 16 . . . . 16 . . . . . 18 16. Effect of resolution on settling velocity by FLACS. . . . . . . 19 17. Vapour mass fraction at the centre of cloud by FLACS . . . . . . . . . . 30 18. Effect of droplet... diameter on evaporation by theory . . . . . . 31 19. Droplet vapour mass fracnon in the surrounding fluid by theory, . . . . . . . . . . 31 20. Droplet vapour mass fraction at the cenne of the cloud by FLACS . . . . . . . . . . . . . . 33 21. Effect...

Khattri, Sanjay Kumar

2003-01-01T23:59:59.000Z

32

Pre-Cloud Aerosol, Cloud Droplet Concentration, and Cloud Condensation Nuclei from the VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign First Quarter 2010 ASR Program Metric Report  

SciTech Connect (OSTI)

In this, the first of a series of Program Metric Reports, we (1) describe archived data from the DOE G-1 aircraft, (2) illustrate several relations between sub-cloud aerosol, CCN, and cloud droplets pertinent to determining the effects of pollutant sources on cloud properties, and (3) post to the data archive an Excel spreadsheet that contains cloud and corresponding sub-cloud data.

Kleinman, LI; Springston, SR; Daum, PH; Lee, Y-N; Sedlacek, AJ; Senum, G; Wang, J

2011-08-31T23:59:59.000Z

33

ON-DEMAND SERIAL DILUTION USING QUANTIZED NANO/PICOLITER-SCALE DROPLETS  

SciTech Connect (OSTI)

This paper describes a fully automated droplet-based microfluidic device for on-demand serial dilution that is capable of achieving a dilution ratio of >6000 (concentration ranges from 1 mM to 160nM) over 35 nanoliter-scale droplets. This serial diluter can be applied to high throughput and label-free kinetic assays by integrating with our previously developed on-demand droplet-based microfluidic with mass spectrometry detection.

Jambovane, Sachin R.; Prost, Spencer A.; Sheen, Allison M.; Magnuson, Jon K.; Kelly, Ryan T.

2014-10-29T23:59:59.000Z

34

Lossless droplet transfer of droplet-based microfluidic analysis  

DOE Patents [OSTI]

A transfer structure for droplet-based microfluidic analysis is characterized by a first conduit containing a first stream having at least one immiscible droplet of aqueous material and a second conduit containing a second stream comprising an aqueous fluid. The interface between the first conduit and the second conduit can define a plurality of apertures, wherein the apertures are sized to prevent exchange of the first and second streams between conduits while allowing lossless transfer of droplets from the first conduit to the second conduit through contact between the first and second streams.

Kelly, Ryan T (West Richland, WA); Tang, Keqi (Richland, WA); Page, Jason S (Kennewick, WA); Smith, Richard D (Richland, WA)

2011-11-22T23:59:59.000Z

35

Droplet Combustion and Non-Reactive Shear-Coaxial Jets with Transverse Acoustic Excitation  

E-Print Network [OSTI]

Related Works in Droplet Combustion . . . . . . . .of Acoustics on Droplet Combustion . . . . . . . . . . . .Fuel Droplet Combustion . . . . . . . . . . . . . . .

Teshome, Sophonias

2012-01-01T23:59:59.000Z

36

a bouncing droplet Terwagne, Vandewalle, and Dorbolo  

E-Print Network [OSTI]

plays a key role microdevice used microfluidic applications. droplet often laid onto a substrate where

Texas at Austin. University of

37

Droplets on Inclined Plates: Local and Global Hysteresis of Pinned Capillary Surfaces  

E-Print Network [OSTI]

Local contact line pinning prevents droplets from rearranging to minimal global energy, and models for droplets without pinning cannot predict their shape. We show that experiments are much better described by a theory, developed herein, that does account for the constrained contact line motion, using as example droplets on tilted plates. We map out their shapes in suitable phase spaces. For 2D droplets, the critical point of maximum tilt depends on the hysteresis range and Bond number. In 3D, it also depends on the initial width, highlighting the importance of the deposition history.

Michiel Musterd; Volkert van Steijn; Chris R. Kleijn; Michiel T. Kreutzer

2014-07-27T23:59:59.000Z

38

The entrainment of oil droplets in flow beneath an oil slick  

E-Print Network [OSTI]

velocity, wind velocity and oil specific gravity, an equilibrium oil thickness will be reached if there is no loss of oil past the barrier. As the velocity is increased, the oil up- stream of the barrier increases in thickness and decreases in for- ward... for any given oil at which droplets are first formed and entrained. Below this speed there is no droplet formation and above this speed the number of droplets formed and the volume of oil entrained increases rapidly. The critical speed for droplet for...

Chao, Chien-Hwa

1973-01-01T23:59:59.000Z

39

Experimental test of scaling of mixing by chaotic advection in droplets moving through microfluidic channels  

E-Print Network [OSTI]

Experimental test of scaling of mixing by chaotic advection in droplets moving through microfluidic that predicts the scaling of chaotic mixing in a droplet moving through a winding microfluidic channel microfluidic channels.1 In microfluidic systems2,3 operating at low values of the Reynolds number Re, streams

Ismagilov, Rustem F.

40

Thermocapillary valve for droplet production and sorting Charles N. Baroud,1,  

E-Print Network [OSTI]

for use as microfluidic reactors, if active control of their formation and transport can be achieved. We as a microfluidic valve for two-phase flows. A theoretical model is developed to explain the forces acting on a drop in complex droplet microfluidic systems. PACS numbers: 47.61.-k, 47.55.dm Microfluidic droplets have been

Boyer, Edmond

Note: This page contains sample records for the topic "droplet number concentration" 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

The structure of mixed {sup 3}He-{sup 4}He droplets doped with OCS: A density functional approach  

SciTech Connect (OSTI)

We have investigated the structure and energetics of mixed {sup 3}He-{sup 4}He droplets doped with a carbonyl sulfide molecule within a density functional approach considering a small but finite temperature of 0.1 K. The molecule is treated as an external field to which the helium droplet is attached. The energetics and appearance of these droplets are discussed for selected numbers of helium atoms, identifying the first magic numbers of the fermionic component.

Leal, Antonio; Mateo, David; Pi, Mart; Barranco, Manuel [Departament ECM, Facultat de Fsica and IN2UB, Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain)] [Departament ECM, Facultat de Fsica and IN2UB, Universitat de Barcelona, Diagonal 645, 08028 Barcelona (Spain); Navarro, Jess [IFIC (CSIC-Universidad de Valencia), P.O. Box 22085, E-46071 Valencia (Spain)] [IFIC (CSIC-Universidad de Valencia), P.O. Box 22085, E-46071 Valencia (Spain)

2013-11-07T23:59:59.000Z

42

Vortex and Droplet Engineering in Holographic Superconductors  

E-Print Network [OSTI]

We give a detailed account of the construction of non--trivial localized solutions in a 2+1 dimensional model of superconductors using a 3+1 dimensional gravitational dual theory of a black hole coupled to a scalar field. The solutions are found in the presence of a background magnetic field. We use numerical and analytic techniques to solve the full Maxwell--scalar equations of motion in the background geometry, finding condensate droplet solutions, and vortex solutions possessing a conserved winding number. These solutions and their properties, which we uncover, help shed light on key features of the (B,T) phase diagram.

Tameem Albash; Clifford V. Johnson

2009-08-22T23:59:59.000Z

43

Concentrating Solar Power Hybrid System Study: Cooperative Research and Development Final Report, CRADA Number CRD-13-506  

SciTech Connect (OSTI)

The purpose of this PTS is to collaboratively leverage the collective resources at General Electric Global Research (GEGRC) and National Renewable Energy Laboratories (NREL) in the areas of concentrating solar power hybrid systems to advance state-of-the-art concentrating solar and conventional power generation system integration.

Turchi, C.

2014-09-01T23:59:59.000Z

44

Breaking anchored droplets in a microfluidic Hele-Shaw cell  

E-Print Network [OSTI]

We study microfluidic self digitization in Hele-Shaw cells using pancake droplets anchored to surface tension traps. We show that above a critical flow rate, large anchored droplets break up to form two daughter droplets, one of which remains in the anchor. Below the critical flow velocity for breakup the shape of the anchored drop is given by an elastica equation that depends on the capillary number of the outer fluid. As the velocity crosses the critical value, the equation stops admitting a solution that satisfies the boundary conditions; the drop breaks up in spite of the neck still having finite width. A similar breaking event also takes place between the holes of an array of anchors, which we use to produce a 2D array of stationary drops in situ.

Amselem, Gabriel; Gallaire, Franois; Baroud, Charles N

2015-01-01T23:59:59.000Z

45

RESEARCH PAPER Effect of geometry on droplet formation in the squeezing regime  

E-Print Network [OSTI]

field Ca Capillary number = lcUc/r cs Speed of sound D Diameter of the drop ei Lattice speed that generate emul- sions of liquid droplets suspended in an outer immiscible liquid have found widespread

Gupta, Amit

46

Inhomogeneous distribution of droplets in cloud turbulence  

E-Print Network [OSTI]

We solve the problem of spatial distribution of inertial particles that sediment in turbulent flow with small ratio of acceleration of fluid particles to acceleration of gravity $g$. The particles are driven by linear drag and have arbitrary inertia. The pair-correlation function of concentration obeys a power-law in distance with negative exponent. Divergence at zero signifies singular distribution of particles in space. Independently of particle size the exponent is ratio of integral of energy spectrum of turbulence times the wavenumber to $g$ times numerical factor. We find Lyapunov exponents and confirm predictions by direct numerical simulations of Navier-Stokes turbulence. The predictions include typical case of water droplets in clouds. This significant progress in the study of turbulent transport is possible because strong gravity makes the particle's velocity at a given point unique.

Itzhak Fouxon; Yongnam Park; Roei Harduf; Changhoon Lee

2014-10-30T23:59:59.000Z

47

Vortices catapult droplets in atomization  

SciTech Connect (OSTI)

A droplet ejection mechanism in planar two-phase mixing layers is examined. Any disturbance on the gas-liquid interface grows into a Kelvin-Helmholtz wave, and the wave crest forms a thin liquid film that flaps as the wave grows downstream. Increasing the gas speed, it is observed that the film breaks up into droplets which are eventually thrown into the gas stream at large angles. In a flow where most of the momentum is in the horizontal direction, it is surprising to observe these large ejection angles. Our experiments and simulations show that a recirculation region grows downstream of the wave and leads to vortex shedding similar to the wake of a backward-facing step. The ejection mechanism results from the interaction between the liquid film and the vortex shedding sequence: a recirculation zone appears in the wake of the wave and a liquid film emerges from the wave crest; the recirculation region detaches into a vortex and the gas flow over the wave momentarily reattaches due to the departure of the vortex; this reattached flow pushes the liquid film down; by now, a new recirculation vortex is being created in the wake of the wavejust where the liquid film is now located; the liquid film is blown up from below by the newly formed recirculation vortex in a manner similar to a bag-breakup event; the resulting droplets are catapulted by the recirculation vortex.

Jerome, J. John Soundar, E-mail: soundar@dalembert.upmc.fr; Zaleski, Stphane; Hoepffner, Jrme [Institut Jean Le Rond d'Alembert, UPMC Univ. Paris 06 and CNRS-UMR 7190, F-75005 Paris (France)] [Institut Jean Le Rond d'Alembert, UPMC Univ. Paris 06 and CNRS-UMR 7190, F-75005 Paris (France); Marty, Sylvain; Matas, Jean-Philippe [Laboratoire des coulements Gophysiques et Industriels (LEGI), Univ. Grenoble Alpes and CNRS - UMR 5519, F-38000 Grenoble (France)] [Laboratoire des coulements Gophysiques et Industriels (LEGI), Univ. Grenoble Alpes and CNRS - UMR 5519, F-38000 Grenoble (France)

2013-11-15T23:59:59.000Z

48

Ultrafine particles formed by heating droplets of simulated ash containing metals  

SciTech Connect (OSTI)

Coal and biomass combustion and waste incineration produce inorganic aerosol, whose ultrafine fraction is hypothesized to be generated mainly by metal vaporization and subsequent nucleation and growth in a high-temperature atmosphere. To investigate this mechanism, we investigated nanoparticle inception and early growth processes at high temperature by spraying monodisperse droplets of simulated ash containing metals in the centerline of a laboratory ethylene/air laminar premixed flame at stoichiometric conditions. Particles were collected by thermophoresis on mica substrates for atomic force microscopy dimensional and morphological analysis. Chemical nature, volume fraction, and mean diameter of particles were evaluated by in situ UV-Vis broadband light absorption and laser light-scattering measurements. We also measured size distribution of material sampled from the flame without dilution using differential mobility analysis and scanning electron microscopy. Energy dispersive X-ray spectroscopy provided further information on the chemical composition of particles deposited on substrates. Size distributions showed that the flame-generated aerosol have a high number concentration, are mostly smaller than 10 nm, and persist far downstream of the droplet injection point. Preliminary results showed that the coagulation rate of those nanoparticles is much slower than their collision rate, which implies that their lifetime may be long and may represent a severe problem for environmental pollution.

Carbone, F.; Barone, A.; Pagliara, R.; Beretta, F.; D'Anna, A.; D'Alessio, A. [University of Naples Federico II, Naples (Italy)

2008-12-15T23:59:59.000Z

49

Dynamic Morphologies of Microscale Droplet Interface Bilayers  

SciTech Connect (OSTI)

Droplet interface bilayers (DIBs) are a powerful platform for studying the dynamics of synthetic cellular membranes; however, very little has been done to exploit the unique dynamical features of DIBs. Here, we generate microscale droplet interface bilayers ( DIBs) by bringing together femtoliter-volume water droplets in a microfluidic oil channel, and characterize morphological changes of the DIBs as the droplets shrink due to evaporation. By varying the initial conditions of the system, we identify three distinct classes of dynamic morphology. (1) Buckling and Fission: When forming DIBs using the lipid-out method (lipids in oil phase), lipids in the shrinking monolayers continually pair together and slide into the bilayer to conserve their mass. As the bilayer continues to grow, it becomes confined, buckles, and eventually fissions one or more vesicles. (2) Uniform Shrinking: When using the lipid-in method (lipids in water phase) to form DIBs, lipids uniformly transfer from the monolayers and bilayer into vesicles contained inside the water droplets. (3) Stretching and Unzipping: Finally, when the droplets are pinned to the wall(s) of the microfluidic channel, the droplets become stretched during evaporation, culminating in the unzipping of the bilayer and droplet separation. These findings offer a better understanding of the dynamics of coupled lipid interfaces.

Mruetusatorn, Prachya [ORNL] [ORNL; Boreyko, Jonathan B [ORNL] [ORNL; Sarles, Stephen A [ORNL] [ORNL; Venkatesan, Guru [The University of Tennessee] [The University of Tennessee; Hayes, Douglas G [ORNL] [ORNL; Collier, Pat [ORNL] [ORNL

2014-01-01T23:59:59.000Z

50

Oil droplet behavior at a pore entrance in the presence of crossflow: Implications for microfiltration of oil-water dispersions  

E-Print Network [OSTI]

The behavior of an oil droplet pinned at the entrance of a micropore and subject to clossflow-induced shear is investigated numerically by solving the Navier-Stokes equation. We found that in the absence of crossflow, the critical transmembrane pressure required to force the droplet into the pore is in excellent agreement with a theoretical prediction based on the Young-Laplace equation. With increasing shear rate, the critical pressure of permeation increases, and at sufficiently high shear rates the oil droplet breaks up into two segments. The results of numerical simulations indicate that droplet breakup at the pore entrance is facilitated at lower surface tension, higher oil-to-water viscosity ratio and larger droplet size but is insensitive to the value of the contact angle. Using simple force and torque balance arguments, an estimate for the increase in critical pressure due to crossflow and the breakup capillary number is obtained and validated for different viscosity ratios, surface tension coefficien...

Darvishzadeh, Tohid; Priezjev, Nikolai V

2013-01-01T23:59:59.000Z

51

Droplet-Based Microfluidics DOI: 10.1002/anie.200601554  

E-Print Network [OSTI]

Droplet-Based Microfluidics DOI: 10.1002/anie.200601554 Reactions in Droplets in Microfluidic · interfaces · microfluidics · microreactors · plugs R. F. Ismagilov et al.Reviews 7336 www;1. Introduction: Reactions in Droplets This Review discusses the use of droplets in microfluidic channels

Ismagilov, Rustem F.

52

Theoretical studies on hydrogen ignition and droplet combustion  

E-Print Network [OSTI]

1.2 Droplet Combustion . . . . . . . . . . . . .Combustion . . . . . . . . . . . . . . . . . . . . . . . . . .Lewis, B. and von Elbe, G. Combustion, Flames and Explosions

Del lamo, Gonzalo

2006-01-01T23:59:59.000Z

53

Concentration of Cryoprotectant in water-in-oil microdroplets for single cell vitrificaton  

E-Print Network [OSTI]

(cont.) Droplets with an initial concentration of IM were found to be concentrated to about 3-4M in 90s while droplets starting at 2M were concentrated to 6M in about the same time. The entire process takes place over a ...

Bajpayee, Anurag

2008-01-01T23:59:59.000Z

54

Capillary droplets on Leidenfrost micro-ratchets  

E-Print Network [OSTI]

Leidenfrost ratchets are structures with the ability of transporting liquid droplets when heated over the critical Leidenfrost temperature. Once this temperature is reached, the droplet levitates over the surface and moves in the direction marked by the slope of the ratchet at terminal velocities around 10 cm/s. Here we provide new experiments with micron-sized ratchets, which have been produced with picosecond pulse laser ablation. In the following work, we use a simple method to measure the thrust driving droplets of capillary size over the micro-ratchets. The mechanism responsible for the force acting on the drop on superheated ratchets has been recently under debate. We extend the recently proposed 'viscous mechanism' proposed by Dupeaux et al. [Europhys. Lett., 96, 58001 (2011)] to capillary droplets and find good agreement with our measurements.

Marin, Alvaro G; Rmer, Gertwillem R B E; Pathiraj, B; Veld, Albertus Huis in 't; Lohse, Detlef

2012-01-01T23:59:59.000Z

55

Measuring droplet impact with piezoelectric film  

E-Print Network [OSTI]

acquisition system (a computer with two high speed boards). Eight piezoelectric films were calibrated in the laboratory. Each film was calibrated by releasing various water droplet sizes from different heights. The signal output of film was then related...

Basahi, Jalal M. Al-Badry M.

2012-06-07T23:59:59.000Z

56

Laser induced rotation of trapped chiral and achiral nematic droplets  

E-Print Network [OSTI]

We study the response of optically trapped achiral and chiralised nematic liquid crystal droplets to linear as well as circular polarised light. We find that there is internal dissipation in rotating achiral nematic droplets trapped in glycerine. We also demonstrate that some chiralised droplets rotate under linearly polarised light. The best fit to our data on chiralised droplets indicates that rotational frequency of these droplets with radius R is approximately proportional to1/R^2, rather than to 1/R^3.

Marjan Mosallaeipour; Yashodhan Hatwalne; N. V. Madhusudana; Sharath Ananthamurthy

2010-02-05T23:59:59.000Z

57

A combined droplet train and ambient pressure photoemission spectrometer for the investigation of liquid/vapor interfaces  

E-Print Network [OSTI]

A combined droplet train and ambient pressure photoemissionspectroscopy/droplet train apparatus for investigating thethis instrument a liquid droplet train with typical droplet

Starr, David E.

2008-01-01T23:59:59.000Z

58

High speed flow cytometer droplet formation system and method  

DOE Patents [OSTI]

A droplet forming flow cytometer system allows high speed processing without the need for high oscillator drive powers through the inclusion of an oscillator or piezoelectric crystal such as within the nozzle volume or otherwise unidirectionally coupled to the sheath fluid. The nozzle container continuously converges so as to amplify unidirectional oscillations which are transmitted as pressure waves through the nozzle volume to the nozzle exit so as to form droplets from the fluid jet. The oscillator is directionally isolated so as to avoid moving the entire nozzle container so as to create only pressure waves within the sheath fluid. A variation in substance concentration is achieved through a movable substance introduction port which is positioned within a convergence zone to vary the relative concentration of substance to sheath fluid while still maintaining optimal laminar flow conditions. This variation may be automatically controlled through a sensor and controller configuration. A replaceable tip design is also provided whereby the ceramic nozzle tip is positioned within an edge insert in the nozzle body so as to smoothly transition from nozzle body to nozzle tip. The nozzle tip is sealed against its outer surface to the nozzle body so it may be removable for cleaning or replacement.

Van den Engh, Ger (Seattle, WA)

2000-01-01T23:59:59.000Z

59

Corium droplet size in direct containment heating  

SciTech Connect (OSTI)

For those light water reactor severe accident sequences in which molten corium is postulated to melt through the reactor pressure vessel (RPV) lower head at elevated primary system pressure and enter the cavity region beneath the vessel, the flow of corium from the RPV will be followed by a sustained high-pressure blowdown of steam and hydrogen through the breach remaining in the vessel. The gases flowing from the breached vessel constitute a source of driving forces capable of dispersing corium from the cavity as droplets into other parts of the containment. An important issue is the fraction of the dispersed corium thermal and chemical energy which may be transferred directly to the containment atmosphere. An important determinant of the extent of direct containment heating is the size of the corium droplets which are dispersed into the containment atmosphere. An analysis is presented here of the mass median droplet sizes in the Argonne National Laboratory CWTI-13 and CWTI-14 reactor material-direct containment heating experiments as well as the Sandia National Laboratory SPIT-19 thermite test. The observed median droplet diameters are shown to be in good agreement with a correlation for the drop size in ordinary annular flow, and a droplet size prediction is carried out for the reactor system.

Sienicki, J.J.; Spencer, B.W.

1986-01-01T23:59:59.000Z

60

Evaporation of Picolitre Droplets on Surfaces with a Range of Wettabilities and Thermal Conductivities  

E-Print Network [OSTI]

is underestimated. For picolitre droplets however, convective heat transfer due to internal flows is negligible compared to conduc- tion. The relative effect of convection and conduction is seen in the Peclet number, Pe = uR/K, where K is the thermal diffusivity...

Talbot, E.L.; Berson, A.; Brown, P.S.; Bain, C.D.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Droplet sizes, dynamics and deposition in vertical annular flow  

SciTech Connect (OSTI)

The role of droplets in vertical upwards annular flow is investigated, focusing on the droplet size distributions, dynamics, and deposition phenomena. An experimental program was performed based on a new laser optical technique developed in these laboratories and implemented here for annular flow. This permitted the simultaneous measurement of droplet size, axial and radial velocity. The dependence of droplet size distributions on flow conditions is analyzed. The Upper-Log Normal function proves to be a good model for the size distribution. The mechanism controlling the maximum stable drop size was found to result from the interaction of the pressure fluctuations of the turbulent flow of the gas core with the droplet. The average axial droplet velocity showed a weak dependence on gas rates. This can be explained once the droplet size distribution and droplet size-velocity relationship are analyzed simultaneously. The surprising result from the droplet conditional analysis is that larger droplet travel faster than smaller ones. This dependence cannot be explained if the drag curves used do not take into account the high levels of turbulence present in the gas core in annular flow. If these are considered, then interesting new situations of multiplicity and stability of droplet terminal velocities are encountered. Also, the observed size-velocity relationship can be explained. A droplet deposition is formulated based on the particle inertia control. This permitted the calculation of rates of drop deposition directly from the droplet size and velocities data.

Lopes, J C.B.; Dukler, A E

1985-10-01T23:59:59.000Z

62

Suppression and Enhancement of Boiling Associated with Multiple Droplet Impingement  

E-Print Network [OSTI]

are at play simultaneously. Furthermore, experiments with single streams of droplets have not been able to elucidate the effects of the onset of boiling (ONB) during the droplet impingement process. Therefore, efforts have been undertaken to consider...

Yang, Yuxuan

2014-05-01T23:59:59.000Z

63

Electrowetting study of jumping droplets on hydrophobic surfaces  

E-Print Network [OSTI]

Recent studies have shown that jumping-droplet-enhanced condensation has higher heat transfer than state-of-the-art dropwise condensing surfaces by -30-40%. Jumping-droplet condensation occurs due to the conversion of ...

Tio, Evelyn

2014-01-01T23:59:59.000Z

64

Phenomenology of electrostatically charged droplet combustion in normal gravity  

SciTech Connect (OSTI)

Experimental findings are provided on the effect of electrostatically charging a fuel on single-burning droplet combustion in normal gravity. It was established that significant modification of the flame morphology and the droplet burning time could be achieved, solely by the droplet charge, without the application of external electric fields. Negative charging of the droplets of mixtures of isooctane with either ethanol or a commercially available anti-static additive generated intense motion of the flame and abbreviated the droplet burning time by as much as 40% for certain blend compositions. Positive charging of the droplets generated almost spherical flames, because electrostatic attraction toward the droplets countered the effect of buoyancy. By comparing combustion of droplets of the same conductivity but different compositions, coupling of electrostatics with combustion chemistry was established. (author)

Anderson, Eric K.; Koch, Jeremy A.; Kyritsis, Dimitrios C. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)

2008-08-15T23:59:59.000Z

65

Jumping-Droplet-Enhanced Condensation on Scalable Superhydrophobic Nanostructured Surfaces  

E-Print Network [OSTI]

When droplets coalesce on a superhydrophobic nanostructured surface, the resulting droplet can jump from the surface due to the release of excess surface energy. If designed properly, these superhydrophobic nanostructured ...

Miljkovic, Nenad

66

Sub-millimeter sized methyl butanoate droplet combustion: Microgravity experiments  

E-Print Network [OSTI]

-dependent, sphero-symmetric droplet combustion simulation that includes detailed gas phase chemical kineticsSub-millimeter sized methyl butanoate droplet combustion: Microgravity experiments and detailed 2012 Abstract Combustion characteristics of isolated sub-millimeter sized methyl butanoate (MB

Walter, M.Todd

67

Thermally induced effects for droplet-based microfluidics.  

E-Print Network [OSTI]

??In recent years, the emergence of droplet-based microfluidics has brought new life to microfluidics technologies. Researchers have demonstrated the potential of droplet-based microfluidics in addressing (more)

Ho, Peng Ching.

2013-01-01T23:59:59.000Z

68

Modeling of droplet breakup in a microfluidic T--shaped junction with a phase--field model  

E-Print Network [OSTI]

A phase--field method is applied to the modeling of flow and breakup of droplets in a T--shaped junction in the hydrodynamic regime where capillary and viscous stresses dominate over inertial forces, which is characteristic of microfluidic devices. The transport equations are solved numerically in the three--dimensional geometry, and the dependence of the droplet breakup on the flow rates, surface tension and viscosities of the two components is investigated in detail. The model reproduces quite accurately the phase diagram observed in experiments performed with immiscible fluids. The critical capillary number for droplet breakup depends on the viscosity contrast, with a trend which is analogous to that observed for free isolated droplets in hyperbolic flow.

Mario De Menech

2005-11-15T23:59:59.000Z

69

Preprint UC Davis Math 200016 Droplet States in the XXZ  

E-Print Network [OSTI]

Preprint UC Davis Math 2000­16 Droplet States in the XXZ Heisenberg Chain Bruno Nachtergaele and Shannon Starr Department of Mathematics University of California, Davis Davis, CA 95616­8633, USA bxn of a droplet of down spins in the system. We find the exact energy and the states that describe these droplets

70

Molecular Thermodynamic Modeling of Droplet-Type Microemulsions  

E-Print Network [OSTI]

a molecular thermodynamic theory for droplet-type microemulsions, both water-in-oil and oil/W) or spherical water droplets dispersed in a continuous medium of oil (water-in-oil microemulsions, W/O). The OMolecular Thermodynamic Modeling of Droplet-Type Microemulsions Livia A. Moreira and Abbas

Firoozabadi, Abbas

71

MODELING AND CONTROLLING PARALLEL TASKS IN DROPLET-BASED MICROFLUIDIC  

E-Print Network [OSTI]

Chapter 12 MODELING AND CONTROLLING PARALLEL TASKS IN DROPLET-BASED MICROFLUIDIC SYSTEMS Karl F-independent models and algorithms to automate the operation of droplet-based microfluidic systems. In these systems mapping of a biochemical analysis task onto a droplet-based microfluidic system is investigated. Achieving

72

Analysis of the microphysical structure of heavy fog using a droplet spectrometer: A case study  

SciTech Connect (OSTI)

The microphysical properties of a long-lasting heavy fog event are examined based on the results from a comprehensive field campaign conducted during the winter of 2006 at Pancheng (32.2{sup o}N, 118.7{sup o}E), Jiangsu Province, China. It is demonstrated that the key microphysical properties (liquid water content, fog droplet concentration, mean radius and standard deviation) exhibited positive correlations with one another in general, and that the 5-min-average maximum value of fog liquid water content was sometimes greater than 0.5 g m{sup -3}. Further analysis shows that the unique combination of positive correlations likely arose from the simultaneous supply of moist air and fog condensation nuclei associated with the advection of warm air, which further led to high liquid water content. High values of liquid water content and droplet concentration conspired to cause low visibility (<50 m) for a prolonged period of about 40 h. Examination of the microphysical relationships conditioned by the corresponding autoconversion threshold functions shows that the collision-coalescence process was sometimes likely to occur, weakening the positive correlations induced by droplet activation and condensational growth. Statistical analysis shows that the observed droplet size distribution can be described well by the Gamma distribution.

Niu, S.; Liu, Y.; Lu, C.; Zhao, L.; Lv, J.; Yang, J.

2010-01-01T23:59:59.000Z

73

An interface tracking model for droplet electrocoalescence.  

SciTech Connect (OSTI)

This report describes an Early Career Laboratory Directed Research and Development (LDRD) project to develop an interface tracking model for droplet electrocoalescence. Many fluid-based technologies rely on electrical fields to control the motion of droplets, e.g. microfluidic devices for high-speed droplet sorting, solution separation for chemical detectors, and purification of biodiesel fuel. Precise control over droplets is crucial to these applications. However, electric fields can induce complex and unpredictable fluid dynamics. Recent experiments (Ristenpart et al. 2009) have demonstrated that oppositely charged droplets bounce rather than coalesce in the presence of strong electric fields. A transient aqueous bridge forms between approaching drops prior to pinch-off. This observation applies to many types of fluids, but neither theory nor experiments have been able to offer a satisfactory explanation. Analytic hydrodynamic approximations for interfaces become invalid near coalescence, and therefore detailed numerical simulations are necessary. This is a computationally challenging problem that involves tracking a moving interface and solving complex multi-physics and multi-scale dynamics, which are beyond the capabilities of most state-of-the-art simulations. An interface-tracking model for electro-coalescence can provide a new perspective to a variety of applications in which interfacial physics are coupled with electrodynamics, including electro-osmosis, fabrication of microelectronics, fuel atomization, oil dehydration, nuclear waste reprocessing and solution separation for chemical detectors. We present a conformal decomposition finite element (CDFEM) interface-tracking method for the electrohydrodynamics of two-phase flow to demonstrate electro-coalescence. CDFEM is a sharp interface method that decomposes elements along fluid-fluid boundaries and uses a level set function to represent the interface.

Erickson, Lindsay Crowl

2013-09-01T23:59:59.000Z

74

Computational Fluid Dynamics of rising droplets  

SciTech Connect (OSTI)

The main goal of this study is to perform simulations of droplet dynamics using Truchas, a LANL-developed computational fluid dynamics (CFD) software, and compare them to a computational study of Hysing et al.[IJNMF, 2009, 60:1259]. Understanding droplet dynamics is of fundamental importance in liquid-liquid extraction, a process used in the nuclear fuel cycle to separate various components. Simulations of a single droplet rising by buoyancy are conducted in two-dimensions. Multiple parametric studies are carried out to ensure the problem set-up is optimized. An Interface Smoothing Length (ISL) study and mesh resolution study are performed to verify convergence of the calculations. ISL is a parameter for the interface curvature calculation. Further, wall effects are investigated and checked against existing correlations. The ISL study found that the optimal ISL value is 2.5{Delta}x, with {Delta}x being the mesh cell spacing. The mesh resolution study found that the optimal mesh resolution is d/h=40, for d=drop diameter and h={Delta}x. In order for wall effects on terminal velocity to be insignificant, a conservative wall width of 9d or a nonconservative wall width of 7d can be used. The percentage difference between Hysing et al.[IJNMF, 2009, 60:1259] and Truchas for the velocity profiles vary from 7.9% to 9.9%. The computed droplet velocity and interface profiles are found in agreement with the study. The CFD calculations are performed on multiple cores, using LANL's Institutional High Performance Computing.

Wagner, Matthew [Lake Superior State University; Francois, Marianne M. [Los Alamos National Laboratory

2012-09-05T23:59:59.000Z

75

Collective waves in dense and confined microfluidic droplet arrays  

E-Print Network [OSTI]

Excitation mechanisms for collective waves in confined dense one-dimensional microfluidic droplet arrays are investigated by experiments and computer simulations. We demonstrate that distinct modes can be excited by creating specific `defect' patterns in flowing droplet trains. Excited longitudinal modes exhibit a short-lived cascade of pairs of laterally displacing droplets. Transversely excited modes obey the dispersion relation of microfluidic phonons and induce a coupling between longitudinal and transverse modes, whose origin is the hydrodynamic interaction of the droplets with the confining walls. Moreover, we investigate the long-time behaviour of the oscillations and discuss possible mechanisms for the onset of instabilities. Our findings demonstrate that the collective dynamics of microfluidic droplet ensembles can be studied particularly well in dense and confined systems. Experimentally, the ability to control microfluidic droplets may allow to modulate the refractive index of optofluidic crystals which is a promising approach for the production of dynamically programmable metamaterials.

Ulf D. Schiller; Jean-Baptiste Fleury; Ralf Seemann; Gerhard Gompper

2015-02-19T23:59:59.000Z

76

Droplet actuation induced by coalescence: experimental evidences and phenomenological modeling  

E-Print Network [OSTI]

This paper considers the interaction between two droplets placed on a substrate in immediate vicinity. We show here that when the two droplets are of different fluids and especially when one of the droplet is highly volatile, a wealth of fascinating phenomena can be observed. In particular, the interaction may result in the actuation of the droplet system, i.e. its displacement over a finite length. In order to control this displacement, we consider droplets confined on a hydrophilic stripe created by plasma-treating a PDMS substrate. This controlled actuation opens up unexplored opportunities in the field of microfluidics. In order to explain the observed actuation phenomenon, we propose a simple phenomenological model based on Newton's second law and a simple balance between the driving force arising from surface energy gradients and the viscous resistive force. This simple model is able to reproduce qualitatively and quantitatively the observed droplet dynamics.

Mathieu Sellier; Volker Nock; Ccile Gaubert; Claude Verdier

2012-08-20T23:59:59.000Z

77

Droplet Characterization in the Wake of Steam Turbine Cascades.  

E-Print Network [OSTI]

?? In low-pressure steam turbines, water droplet formation on the surfaces of stationary stator blades can lead to erosion on downstream turbine blades and other (more)

Plondke, Adam Charles

2012-01-01T23:59:59.000Z

78

Clay-Oil Droplet Suspensions in Electric Field.  

E-Print Network [OSTI]

?? Silicone oil droplets containing synthetic smectite clay submerged in another immiscible organic oil have been studied by observing clay particle movement, oil circulation and (more)

Kjerstad, Knut Brndbo

2012-01-01T23:59:59.000Z

79

atmospheric aqueous droplets: Topics by E-print Network  

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

droplet patterning and is potentially useful for many applications, such as microfluidics, thermal control and microfabrication. Style, Robert W; Park, Su Ji; Weon, Byung...

80

A combined droplet train and ambient pressure photoemission spectrometer for the investigation of liquid/vapor interfaces  

SciTech Connect (OSTI)

We describe a combined ambient pressure photoelectron spectroscopy/droplet train apparatus for investigating the nature and heterogeneous chemistry of liquid/vapor interfaces. In this instrument a liquid droplet train with typical droplet diameters from 50...150 {micro}m is produced by a vibrating orifice aerosol generator (VOAG). The droplets are irradiated by soft X-rays (100...1500 eV) in front of the entrance aperture of a differentially pumped electrostatic lens system that transfers the emitted electrons into a conventional hemispherical electron analyzer. The photoemission experiments are performed at background pressures of up to several Torr, which allows the study of environmentally important liquid/vapor interfaces, in particular aqueous solutions, under equilibrium conditions. The exposure time of the droplet surface to the background gases prior to the XPS measurement can be varied, which will allow future kinetic measurements of gas uptake on liquid surfaces. As an example, a measurement of the surface composition of a {chi} = 0.21 aqueous methanol solution is presented. The concentration of methanol at the vapor/liquid interface is enhanced by a factor of about 3 over the bulk value, while the expected bulk value is recovered at depths larger than about 1.5 nm.

Starr, David E.; Wong, Ed K.; Worsnop, Douglas R.; Wilson, Kevin R.; Bluhm, Hendrik

2008-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

BIASES IN PARAMETERIZED AUTOCONVERSION AND ACCRETION RATES DUE TO SUBGRID VARIATIONS AND CORRELATIONS OF CLOUD WATER, DROPLET  

E-Print Network [OSTI]

AND CORRELATIONS OF CLOUD WATER, DROPLET NUMBER, AND DRIZZLE WATER J. Wang, G. Senum, Y. Liu, P. Daum, L. Kleinman for the United States Department of Energy under Contract No. DE-AC02-98CH10886 ABSTRACT Small scale processes of cloud water to drizzle water; its rate is often parameterized as a function of local cloud water content

82

Effects of droplet size on intrusion of sub-surface oil spills  

E-Print Network [OSTI]

This thesis explores the effects of droplet size on droplet intrusion in sub-surface oil spills. Laboratory experiments were performed where glass beads of various sizes, which serve to simulate oil droplets in deepsea oil ...

Chan, Godine Kok Yan

2013-01-01T23:59:59.000Z

83

A microfluidic device based on droplet storage for screening solubility diagrams  

E-Print Network [OSTI]

This work describes a new microfluidic device developed for rapid screening of solubility diagrams. In several parallel channels, hundreds of nanoliter-volume droplets of a given solution are first stored with a gradual variation in the solute concentration. Then, the application of a temperature gradient along these channels enables us to read directly and quantitatively phase diagrams, concentration vs. temperature. We show, using a solution of adipic acid, that we can measure ten points of the solubility curve in less than 1 hr and with only 250 $\\mu$L of solution.

P. Laval; N. Lisai; J. -B. Salmon; M. Joanicot

2007-04-04T23:59:59.000Z

84

OIL DROPLET MANIPULATION USING LIQUID DIELECTROPHORESIS ON ELECTRET WITH SUPERLYOPHOBIC  

E-Print Network [OSTI]

OIL DROPLET MANIPULATION USING LIQUID DIELECTROPHORESIS ON ELECTRET WITH SUPERLYOPHOBIC SURFACES flow friction for water and oil. Charge stability of electret in liquid is much improved with new hysteresis of SLS for oil droplets are experimentally demonstrated, indicating low motion resistance

Kasagi, Nobuhide

85

SHORT REPORT Open Access Nuclear lipid droplets identified by electron  

E-Print Network [OSTI]

SHORT REPORT Open Access Nuclear lipid droplets identified by electron microscopy of serial that nuclear lipid droplets (LDs) are organized into domains similar to those of cytoplasmic LDs with the nuclear envelope, it could be suggested however that nuclear LDs are cytoplamic LDs trapped within

Boyer, Edmond

86

CLOUD DROPLET NUCLEATION AND ITS CONNECTION TO AEROSOL PROPERTIES  

E-Print Network [OSTI]

CLOUD DROPLET NUCLEATION AND ITS CONNECTION TO AEROSOL PROPERTIES STEPHEN E. SCHWARTZ Environmental in cloud-free conditions and indirectly, by increasing concentratiol1S of cloud droplets thereby enhancing cloud shortwave reflectivity. These effecls are thought to be significant in the context of changes

87

Towards Optimal Strategies for Moving Droplets in Digital Microfluidic Systems  

E-Print Network [OSTI]

Towards Optimal Strategies for Moving Droplets in Digital Microfluidic Systems Karl F. Böhringer@ee.washington.edu Abstract - In digital microfluidic systems, analyte droplets (volume typically less than 1µl outlines a high-level approach to optimally control digital microfluidic systems, i.e., to develop

88

Measuring the pressures across microfluidic droplets with an optical tweezer  

E-Print Network [OSTI]

Measuring the pressures across microfluidic droplets with an optical tweezer Yuhang Jin,1 Antony a novel technique that enables pressure measurements to be made in microfluidic chips using optical trapping. Pressure differentials across droplets in a microfluidic channel are determined by monitoring

89

Cooling of Integrated Circuits Using Droplet-Based Microfluidics  

E-Print Network [OSTI]

Cooling of Integrated Circuits Using Droplet-Based Microfluidics Vamsee K. Pamula Duke University and microfluidics-based solutions were proposed in the past. We present a cooling method based on high supply of droplets without the need for external sensors and electrothermocapillary control where hot

Chakrabarty, Krishnendu

90

Thermo-fluid Dynamics of Flash Atomizing Sprays and Single Droplet Impacts  

E-Print Network [OSTI]

T , where C is the heat capacity of the liquid. Since fluidheat capacity bubble growth constant droplet diameter mean droplet diameter nozzle diameter thermal diffusivity of liquid

Vu, Henry

2010-01-01T23:59:59.000Z

91

E-Print Network 3.0 - atomized metal droplets Sample Search Results  

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

Collection: Mathematics 8 Cooling of Integrated Circuits Using Droplet-Based Microfluidics Summary: .N. Heffington, et al., "Vibration-induced droplet atomization heat...

92

E-Print Network 3.0 - atomizing analyte droplets Sample Search...  

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

VAPORIZATION OF LIQUID OXYGEN (LOX) DROPLETS Summary: into the chamber at a subcritical temperature, and breaks up into small droplets through atomization, which......

93

Computational insights of water droplet transport on graphene sheet with chemical density  

SciTech Connect (OSTI)

Surface gradient has been emerging as an intriguing technique for nanoscale particle manipulation and transportation. Owing to its outstanding and stable chemical properties, graphene with covalently bonded chemical groups represents extraordinary potential for the investigation of nanoscale transport in the area of physics and biology. Here, we employ molecular dynamics simulations to investigate the fundamental mechanism of utilizing a chemical density on a graphene sheet to control water droplet motions on it. Simulation results have demonstrated that the binding energy difference among distinct segment of graphene in terms of interaction between the covalently bonded oxygen atoms on graphene and the water molecules provides a fundamental driving force to transport the water droplet across the graphene sheet. Also, the velocity of the water droplet has showed a strong dependence on the relative concentration of oxygen atoms between successive segments. Furthermore, a multi-direction channel provides insights to guide the transportation of objects towards a targeted position, separating the mixtures with a system of specific chemical functionalization. Our findings shed illuminating lights on the surface gradient method and therefore provide a feasible way to control nanoscale motion on the surface and mimic the channelless microfluidics.

Zhang, Liuyang; Wang, Xianqiao, E-mail: xqwang@uga.edu [College of Engineering and NanoSEC, University of Georgia, Athens, Georgia 30602 (United States)

2014-05-21T23:59:59.000Z

94

Assessment of the release of atomic Na from a burning black liquor droplet using quantitative PLIF  

SciTech Connect (OSTI)

The quantitative measurement of atomic sodium (Na) release, at high concentration, from a burning black liquor droplet has been demonstrated using a planar laser-induced fluorescence (PLIF) technique, corrected for fluorescence trapping. The local temperature of the particle was measured to be approximately 1700 C, at a height of 10 mm above a flat flame burner. The PLIF technique was used to assess the temporal release of atomic Na from the combustion of black liquor and compare it with the Na concentration in the remaining smelt. A first-order model was made to provide insight using a simple Plug Flow Reactor model based on the independently measured concentration of residual Na in the smelt as a function of time. This model also required the dilution ratio of the combustion products in the flat flame entrained into the plume gas from the black liquor particle to be estimated. The key findings of these studies are: (i) the peak concentration of atomic Na from the combustion of the black liquor droplets is around 1.4 ppm; (ii) very little atomic Na is present during the drying, devolatilisation or char combustion stages; and (iii) the presence of atomic Na during smelt phase dominates over that from the other combustion stages. (author)

Saw, Woei L.; Nathan, Graham J. [Centre for Energy Technology, The Environment Institute, School of Mechanical Engineering, The University of Adelaide, SA 5005 (Australia); Ashman, Peter J.; Alwahabi, Zeyad T. [Centre for Energy Technology, The Environment Institute, School of Chemical Engineering, The University of Adelaide, SA 5005 (Australia)

2009-07-15T23:59:59.000Z

95

Lipid droplets fusion in adipocyte differentiated 3T3-L1 cells: A Monte Carlo simulation  

SciTech Connect (OSTI)

Several human worldwide diseases like obesity, type 2 diabetes, hepatic steatosis, atherosclerosis and other metabolic pathologies are related to the excessive accumulation of lipids in cells. Lipids accumulate in spherical cellular inclusions called lipid droplets (LDs) whose sizes range from fraction to one hundred of micrometers in adipocytes. It has been suggested that LDs can grow in size due to a fusion process by which a larger LD is obtained with spherical shape and volume equal to the sum of the progenitors ones. In this study, the size distribution of two populations of LDs was analyzed in immature and mature (5-days differentiated) 3T3-L1 adipocytes (first and second populations, respectively) after Oil Red O staining. A Monte Carlo simulation of interaction between LDs has been developed in order to quantify the size distribution and the number of fusion events needed to obtain the distribution of the second population size starting from the first one. Four models are presented here based on different kinds of interaction: a surface weighted interaction (R2 Model), a volume weighted interaction (R3 Model), a random interaction (Random model) and an interaction related to the place where the LDs are born (Nearest Model). The last two models mimic quite well the behavior found in the experimental data. This work represents a first step in developing numerical simulations of the LDs growth process. Due to the complex phenomena involving LDs (absorption, growth through additional neutral lipid deposition in existing droplets, de novo formation and catabolism) the study focuses on the fusion process. The results suggest that, to obtain the observed size distribution, a number of fusion events comparable with the number of LDs themselves is needed. Moreover the MC approach results a powerful tool for investigating the LDs growth process. Highlights: We evaluated the role of the fusion process in the synthesis of the lipid droplets. We compared the size distribution of the lipid droplets in immature and mature cells. We used the Monte Carlo simulation approach, simulating 10 thousand of fusion events. Four different interaction models between the lipid droplets were tested. The best model which mimics the experimental measures was selected.

Boschi, Federico, E-mail: federico.boschi@univr.it [Department of Neurological and Movement Sciences, University of Verona, Strada Le Grazie 8, 37134 Verona (Italy); Department of Computer Science, University of Verona, Strada Le Grazie 15, 37134 Verona (Italy); Rizzatti, Vanni; Zamboni, Mauro [Department of Medicine, Geriatric Section, University of Verona, Piazzale Stefani 1, 37126 Verona (Italy); Sbarbati, Andrea [Department of Neurological and Movement Sciences, University of Verona, Strada Le Grazie 8, 37134 Verona (Italy)

2014-02-15T23:59:59.000Z

96

Metals processing control by counting molten metal droplets  

DOE Patents [OSTI]

Apparatus and method for controlling metals processing (e.g., ESR) by melting a metal ingot and counting molten metal droplets during melting. An approximate amount of metal in each droplet is determined, and a melt rate is computed therefrom. Impedance of the melting circuit is monitored, such as by calculating by root mean square a voltage and current of the circuit and dividing the calculated current into the calculated voltage. Analysis of the impedance signal is performed to look for a trace characteristic of formation of a molten metal droplet, such as by examining skew rate, curvature, or a higher moment.

Schlienger, Eric (Albuquerque, NM); Robertson, Joanna M. (Safford, AZ); Melgaard, David (Albuquerque, NM); Shelmidine, Gregory J. (Tijeras, NM); Van Den Avyle, James A. (Corrales, NM)

2000-01-01T23:59:59.000Z

97

ARM - Measurement - Cloud particle number concentration  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch Related InformationAciddroplet size ARM Dataice

98

Microfluidic emulsion characterization for the development of armored droplet arrays  

E-Print Network [OSTI]

An experimental study was performed to determine the best method for using a flow-focusing device to produce monodisperse water droplets in a polymer flow with sufficient spacing to polymerize a protective shell around the ...

Maltas, Stephen K

2006-01-01T23:59:59.000Z

99

Droplet minimizers for the Cahn Hilliard free energy functional  

E-Print Network [OSTI]

We prove theorem characterizing the minimizers in a model for condensation based on the Cahn Hilliard free energy functional. In particular, we exactly determine the critical density for droplet formation.

E. A. Carlen; M. C. Carvalho; R. Esposito; J. L. Lebowitz; R. Marra

2005-05-11T23:59:59.000Z

100

Dryout droplet distribution and dispersed flow film boiling  

E-Print Network [OSTI]

Dispersed flow film boiling is characterized by liquid-phase droplets entrained in a continuous vapor-phase flow. In a previous work at MIT, a model of dispersed flow heat transfer was developed, called the Local Conditions ...

Hill, Wayne S.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Programmable active droplet generation enabled by integrated pneumatic micropumps  

E-Print Network [OSTI]

through programming the pumping configurations and the application to multi-volume digital PCR for precise and quantitative detection of genetic targets. Overall, our results suggest that the pump-based droplet microfluidics provide a robust platform...

Zeng, Yong; Shin, Mimi; Wang, Tanyu

2013-01-01T23:59:59.000Z

102

Simultaneous measurement of the surface temperature and the release of atomic sodium from a burning black liquor droplet  

SciTech Connect (OSTI)

Simultaneous measurement of the concentration of released atomic sodium, swelling, surface and internal temperature of a burning black liquor droplet under a fuel lean and rich condition has been demonstrated. Two-dimensional two-colour optical pyrometry was employed to determine the distribution of surface temperature and swelling of a burning black liquor droplet while planar laser-induced fluorescence (PLIF) was used to assess the temporal release of atomic sodium. The key findings of these studies are: (i) the concentration of atomic sodium released during the drying and devolatilisation stages was found to be correlated with the external surface area; and (ii) the insignificant presence of atomic sodium during the char consumption stage shows that sodium release is suppressed by the lower temperature and by the high CO{sub 2} content in and around the particle. (author)

Saw, Woei L.; Nathan, Graham J. [Centre for Energy Technology, The University of Adelaide, SA 5006 (Australia); School of Mechanical Engineering, The University of Adelaide (Australia); Ashman, Peter J.; Alwahabi, Zeyad T. [Centre for Energy Technology, The University of Adelaide, SA 5006 (Australia); School of Chemical Engineering, The University of Adelaide (Australia); Hupa, Mikko [Process Chemistry Centre, Aabo Akademi, Biskopsgatan 8 FI-20500 Aabo (Finland)

2010-04-15T23:59:59.000Z

103

Study of the Physics of Droplet Impingement Cooling  

E-Print Network [OSTI]

STUDY OF THE PHYSICS OF DROPLET IMPINGEMENT COOLING A Dissertation by GUILLERMO ENRIQUE SORIANO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR... OF PHILOSOPHY May 2011 Major Subject: Mechanical Engineering STUDY OF THE PHYSICS OF DROPLET IMPINGEMENT COOLING A Dissertation by GUILLERMO ENRIQUE SORIANO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment...

Soriano, Guillermo Enrique

2012-07-16T23:59:59.000Z

104

Material forming apparatus using a directed droplet stream  

DOE Patents [OSTI]

Systems and methods are described for rapidly forming precision metallic and intermetallic alloy net shape parts directly from liquid metal droplets. A directed droplet deposition apparatus includes a crucible with an orifice for producing a jet of material, a jet destabilizer, a charging structure, a deflector system, and an impact zone. The systems and methods provide advantages in that fully dense, microstructurally controlled parts can be fabricated at moderate cost.

Holcomb, David E. (Oak Ridge, TN); Viswanathan, Srinath (Knoxville, TN); Blue, Craig A. (Knoxville, TN); Wilgen, John B. (Oak Ridge, TN)

2000-01-01T23:59:59.000Z

105

Ultrasonic estimation of the contact angle of a sessile droplet  

SciTech Connect (OSTI)

Radiation of energy by large amplitude leaky Rayleigh waves is regarded as one of the key physical mechanisms regulating the actuation and manipulation of droplets in surface acoustic wave (SAW) microfluidic devices. The interaction between a SAW and a droplet is highly complex and is presently the subject of extensive research. This paper investigates the existence of an additional interaction mechanism based on the propagation of quasi-Stoneley waves inside sessile droplets deposited on a solid substrate. In contrast with the leaky Rayleigh wave, the energy of the Stoneley wave is confined within a thin fluid layer in contact with the substrate. The hypothesis is confirmed by three-dimensional finite element simulations and ultrasonic scattering experiments measuring the reflection of Rayleigh waves from droplets of different diameters. Moreover, real-time monitoring of the droplet evaporation process reveals a clear correlation between the droplet contact angle and the spectral information of the reflected Rayleigh signal, thus paving the way for ultrasonic measurements of surface tension.

Quintero, R.; Simonetti, F. [Department of Aerospace Engineering and Engineering Mechanics, University of Cincinnati, Cincinnati, OH 45221 (United States)

2014-02-18T23:59:59.000Z

106

Axisymmetric oscillation modes of a double droplet system  

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

A double droplet system (DDS) consists of a sessile and a pendant drop that are coupled through a liquid filled cylindrical hole in a plate of thickness d. For a small hole radius R, equilibrium shapes of both drops are sections of spheres. While DDSs have a number of applications in microfluidics, a DDS oscillating about its equilibrium state can be used as a fast focusing liquid lens. Here, a DDS consisting of an isothermal, incompressible Newtonian fluid of constant density p and constant viscosity u that is surrounded by a gas is excited by oscillating in time (a) the pressure in the gas surrounding either drop (pressure excitation), (b) the plate perpendicular to its plane (axial excitation), and (c) the hole radius (radial excitation). In contrast to previous works that assumed transient drop shapes are spherical, they are determined here by simulation and used to identify the natural modes of axisymmetric oscillations from resonances observed during frequency sweeps with DDSs for which the combined volume V of the two drops is less than (4/3)?R3. Pressure and axial excitations are found to have identical responses but axial and radial excitations are shown to excite different modes. These modes are compared to those exhibited by single pendant (sessile) drop systems. In particular, while a single pendant (sessile) drop has one additional oscillation mode compared to a free drop, a DDS is found to exhibit roughly twice as many oscillation modes as a pendant (sessile) drop. The effects of dimensionless volume V/R3, dimensionless plate thickness d/R, and Ohnesorge number Oh =?/??R? , where ? is the surface tension of the DDS-gas interface, on the resonance frequencies are also investigated.

Ramalingam, Santhosh K.; Basaran, Osman A.

2010-11-15T23:59:59.000Z

107

Axisymmetric oscillation modes of a double droplet system  

SciTech Connect (OSTI)

A double droplet system (DDS) consists of a sessile and a pendant drop that are coupled through a liquid filled cylindrical hole in a plate of thickness d. For a small hole radius R, equilibrium shapes of both drops are sections of spheres. While DDSs have a number of applications in microfluidics, a DDS oscillating about its equilibrium state can be used as a fast focusing liquid lens. Here, a DDS consisting of an isothermal, incompressible Newtonian fluid of constant density p and constant viscosity u that is surrounded by a gas is excited by oscillating in time (a) the pressure in the gas surrounding either drop (pressure excitation), (b) the plate perpendicular to its plane (axial excitation), and (c) the hole radius (radial excitation). In contrast to previous works that assumed transient drop shapes are spherical, they are determined here by simulation and used to identify the natural modes of axisymmetric oscillations from resonances observed during frequency sweeps with DDSs for which the combined volume V of the two drops is less than (4/3)?R3. Pressure and axial excitations are found to have identical responses but axial and radial excitations are shown to excite different modes. These modes are compared to those exhibited by single pendant (sessile) drop systems. In particular, while a single pendant (sessile) drop has one additional oscillation mode compared to a free drop, a DDS is found to exhibit roughly twice as many oscillation modes as a pendant (sessile) drop. The effects of dimensionless volume V/R3, dimensionless plate thickness d/R, and Ohnesorge number Oh =?/??R? , where ? is the surface tension of the DDS-gas interface, on the resonance frequencies are also investigated.

Ramalingam, Santhosh K.; Basaran, Osman A.

2010-11-15T23:59:59.000Z

108

Simultaneous fog formation and thermophoretic droplet deposition in a turbulent pipe flow  

SciTech Connect (OSTI)

Simultaneous aerosol formation by equilibrium condensation and the migration of the resulting droplets to the cold surface by thermophoresis is studied theoretically for a turbulent pipe flow. The problem is one in which a mixture of a vapor and noncondensable gas flows into a section of pipe where the pipe wall is cooled to below the dew point of the vapor. Because the temperature gradient at the pipe wall decays to zero once the gas travels far enough into the pipe, only some fraction of the droplets formed will deposit on the pipe wall. The equations of energy and diffusion suggest that turbulence leads to a discontinuity in the aerosol (fog) concentration at the boundary between the fog and clear regions. Numerical solutions are obtained for CsOH fog formation and deposition in steam flow, a particular case of current practical interest in water reactor safety. The axial and radial variations of the aerosol and vapor concentrations are displayed graphically, as are the location of the fog boundary as a function of axial distance and the efficiency of deposition as a function of the pipe wall temperature.

Epstein, M.; Hauser, G.M. (Fauske and Associates, Inc., Burr Ridge, IL (USA))

1991-02-01T23:59:59.000Z

109

Cylindrical acoustic levitator/concentrator  

DOE Patents [OSTI]

A low-power, inexpensive acoustic apparatus for levitation and/or concentration of aerosols and small liquid/solid samples having particulates up to several millimeters in diameter in air or other fluids is described. It is constructed from a commercially available, hollow cylindrical piezoelectric crystal which has been modified to tune the resonance frequency of the breathing mode resonance of the crystal to that of the interior cavity of the cylinder. When the resonance frequency of the interior cylindrical cavity is matched to the breathing mode resonance of the cylindrical piezoelectric transducer, the acoustic efficiency for establishing a standing wave pattern in the cavity is high. The cylinder does not require accurate alignment of a resonant cavity. Water droplets having diameters greater than 1 mm have been levitated against the force of gravity using; less than 1 W of input electrical power. Concentration of aerosol particles in air is also demonstrated.

Kaduchak, Gregory (Los Alamos, NM); Sinha, Dipen N. (Los Alamos, NM)

2002-01-01T23:59:59.000Z

110

IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, VOL. 27, NO. 11, NOVEMBER 2008 1905 A Droplet-Manipulation Method for Achieving  

E-Print Network [OSTI]

-Referencing-Based Digital Microfluidic Biochips Tao Xu, Student Member, IEEE, and Krishnendu Chakrabarty, Fellow, IEEE Abstract--Digital microfluidic biochips are revolutionizing high-throughput DNA, immunoassays, and clinical simultaneous movement of a large number of droplets on a microfluidic array. Concurrency is enhanced through

Chakrabarty, Krishnendu

111

Bouncing or sticky droplets: impalement transitions on superhydrophobic micropatterned surfaces  

E-Print Network [OSTI]

When a liquid drops impinges a hydrophobic rough surface it can either bounce off the surface (fakir droplets) or be impaled and strongly stuck on it (Wenzel droplets). The analysis of drop impact and quasi static ''loading'' experiments on model microfabricated surfaces allows to clearly identify the forces hindering the impalement transitions. A simple semi-quantitative model is proposed to account for the observed relation between the surface topography and the robustness of fakir non-wetting states. Motivated by potential applications in microfluidics and in the fabrication of self cleaning surfaces, we finally propose some guidelines to design robust superhydrophobic surfaces.

Denis Bartolo; Farid Bouamrirene; Emilie Verneuil; Axel Buguin; Pascal Silberzan; Sebastien Moulinet

2005-10-28T23:59:59.000Z

112

The effects of deposit thermal history on microstructure produced by uniform droplet spray forming  

E-Print Network [OSTI]

Uniform droplet spray forming is a process aimed at producing near-net-shape parts directly from the liquid melt by spraying micron-sized droplets onto a movable target. In spray forming, the solidification rate of the ...

Cherng, Jean-Pei Jeanie

2002-01-01T23:59:59.000Z

113

Effects of surface properties on solder bump formation by direct droplet deposition  

E-Print Network [OSTI]

Recent advances in microdroplet generation and deposition processes have made it possible to directly form solder bumps on integrated circuits using micron-sized molten metal droplets. The direct droplet deposition bumping ...

Hsiao, Wen Kai, 1972-

2004-01-01T23:59:59.000Z

114

Air-stable droplet interface bilayers on oil-infused surfaces  

SciTech Connect (OSTI)

Droplet interface bilayers (DIBs) are versatile model membranes useful for synthetic biology and biosensing; however, to date they have always been confined to fluid reservoirs. Here, we demonstrate that when two or more water droplets collide on an oil-infused substrate, they exhibit non-coalescence due to the formation of a thin oil film that gets squeezed between the droplets from the bottom-up. We show that when phospholipids are included in the water droplets, a stable droplet interface bilayer forms between the non-coalescing water droplets. As with traditional oil-submerged DIBs, we were able to characterize ion channel transport by incorporating peptides into each droplet. Our findings reveal that droplet interface bilayers can function in air environments, which could potentially enable biosensing of atmospheric particulates.

Boreyko, Jonathan B [ORNL] [ORNL; Polizos, Georgios [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Datskos, Panos G [ORNL] [ORNL; Sarles, Stephen A [ORNL] [ORNL; Collier, Pat [ORNL] [ORNL

2014-01-01T23:59:59.000Z

115

Droplet Combustion and Non-Reactive Shear-Coaxial Jets with Transverse Acoustic Excitation  

E-Print Network [OSTI]

ame sur- rounding an ethanol fuel droplet. The time spaname sur- rounding an ethanol fuel droplet. The time spanestablished (mm 2 /s) Fuel Ethanol Methanol JP-8 0.87,1.04 (

Teshome, Sophonias

2012-01-01T23:59:59.000Z

116

Study of the Effects of Single and Double Droplets Impingement on Surface Cooling  

E-Print Network [OSTI]

the independent variable and the observed heat transfer mechanism. The study of coherent droplet impingement on an open surface is experimentally characterized using high speed imaging and infrared thermography. Single stream droplet impingent cooling...

Tsai, Hsin-Min

2012-10-19T23:59:59.000Z

117

Effects of Induced Acoustic Vibrations on Droplet Shedding on Hybrid Micro-structured Surfaces  

E-Print Network [OSTI]

. In an effort to circumvent the pinning effect, a vibration-induced droplet shedding method has been explored to overcome contact angle hysteresis and facilitate droplet shedding at lower rolling angles. To understand the effects of hybrid surface morphology...

Lai, Chen-Ling

2014-04-28T23:59:59.000Z

118

E-Print Network 3.0 - acoustic droplet vaporization Sample Search...  

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

correlations for droplet... gases. Keywords: Irreversible thermodynamic theorem; Subcritical and supercritical ... Source: Yang, Vigor - School of Aerospace Engineering,...

119

Solar Absorption by Mie Resonances in Cloud Droplets Charles S. Zender  

E-Print Network [OSTI]

by cloud droplets may consti- tute a significant and unaccounted-for solar energy sink in the atmosphere

Zender, Charles

120

Droplet microfluidic technology for single-cell high-throughput screening  

E-Print Network [OSTI]

Droplet microfluidic technology for single-cell high-throughput screening Eric Brouzesa,b,1 (received for review March 31, 2009) We present a droplet-based microfluidic technology that enables high our droplet microfluidic platform is modular, robust, uses no moving parts, and has a wide range

Perrimon, Norbert

Note: This page contains sample records for the topic "droplet number concentration" 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

THERMAL EFFECTS ON DROPLET TRANSPORT IN DIGITIAL MICROFLUIDICS WITH APPLICATIONS TO CHIP COOLING  

E-Print Network [OSTI]

THERMAL EFFECTS ON DROPLET TRANSPORT IN DIGITIAL MICROFLUIDICS WITH APPLICATIONS TO CHIP COOLING, on a platform we call "digital microfluidics," where nanoliter-sized discrete liquid droplets immersed in oil-dependent system parameters on droplet transport in this digital microfluidic platform. We demonstrate

Chakrabarty, Krishnendu

122

DROPLET-BASED HOT SPOT COOLING USING TOPLESS DIGITAL MICROFLUIDICS ON A PRINTED CIRCUIT BOARD  

E-Print Network [OSTI]

DROPLET-BASED HOT SPOT COOLING USING TOPLESS DIGITAL MICROFLUIDICS ON A PRINTED CIRCUIT BOARD Phil demonstrated a cooling method on a "digital microfluidics" platform whereby discrete droplets are manipulated and the effective flow rate of the droplets. The results presented here suggest that digital microfluidics

Paris-Sud XI, Université de

123

Integrated Droplet Routing in the Synthesis of Microfluidic Tao Xu and Krishnendu Chakrabarty  

E-Print Network [OSTI]

Integrated Droplet Routing in the Synthesis of Microfluidic Biochips* Tao Xu and Krishnendu, krish}@ee.duke.edu ABSTRACT Microfluidic biochips are revolutionizing many areas of biochemistry of droplet routing in microfluidic arrays. These methods typically rely on post-synthesis droplet routing

Chakrabarty, Krishnendu

124

Evaporation and Condensation of Large Droplets in the Presence of Inert Admixtures Containing Soluble Gas  

E-Print Network [OSTI]

the mutual influence of heat and mass transfer during gas absorption and evaporation or condensation transfer during gas absorption by liquid droplets and during droplets evaporation and va- por condensationEvaporation and Condensation of Large Droplets in the Presence of Inert Admixtures Containing

Elperin, Tov

125

ENGINEERING SURFACE MICRO-STRUCTURE TO CONTROL FOULING AND HYSTERESIS IN DROPLET BASED MICROFLUIDIC BIOANALYTICAL SYSTEMS  

E-Print Network [OSTI]

ENGINEERING SURFACE MICRO-STRUCTURE TO CONTROL FOULING AND HYSTERESIS IN DROPLET BASED MICROFLUIDIC"--for droplet-based microfluidics. Building on the theory of wetting of rough surfaces, we have developed novel on contact angle hysteresis--a major dissipative mechanism in droplet based microfluidic systems

126

Evaporation-Induced Particle Microseparations inside Droplets Floating on a Chip  

E-Print Network [OSTI]

and manipulating micro- sized droplets freely suspended on the surface of a dense perfluorinated hydrocarbon oil (F in liquid films and droplets has been used in convective assembly of micro- and nanoparticle coatings to the internal hydrodynamics in drying films and droplets.12-20,23,25 Hydro- dynamic flows driven by solvent

Velev, Orlin D.

127

Air Effects on Large Droplet Impact Frank T Smith1  

E-Print Network [OSTI]

Air Effects on Large Droplet Impact Frank T Smith1 and Richard Purvis2 UCL, London WC1E 6BT, UK A study is presented of the interaction(s) between air and water in determining the motion of a large surrounding air motion. I.Nomenclature A = magnitude of shear flow in the air c = ratio U /V D

Purvis, Richard

128

In-situ droplet monitoring for self-tuning spectrometers  

DOE Patents [OSTI]

A laser scattering based imaging technique is utilized in order to visualize the aerosol droplets in an inductively coupled plasma (ICP) torch from an aerosol source to the site of analytical measurements. The resulting snapshots provide key information about the spatial distribution of the aerosol introduced by direct and indirect injection devices: 1) a direct injection high efficiency nebulizer (DIHEN); 2) a large-bore DIHEN (LB-DIHEN); and 3) a PFA microflow nebulizer with a PFA Scott-type spray chamber. Moreover, particle image velocimetry (PIV) is used to study the in-situ behavior of the aerosol before interaction with, for example, plasma, while the individual surviving droplets are explored by particle tracking velocimetry (PTV). Further, the velocity distribution of the surviving droplets demonstrates the importance of the initial droplet velocities in complete desolvation of the aerosol for optimum analytical performance in ICP spectrometries. These new observations are important in the design of the next-generation direct injection devices for lower sample consumption, higher sensitivity, lower noise levels, suppressed matrix effects, and for developing smart spectrometers. For example, a controller can be provided to control the output of the aerosol source by controlling the configuration of the source or the gas flow rate via feedback information concerning the aerosol.

Montaser, Akbar (Potomac, MD); Jorabchi, Kaveh (Arlington, VA); Kahen, Kaveh (Kleinburg, CA)

2010-09-28T23:59:59.000Z

129

Tuning Mixing within a Droplet for Digital Microfluidics  

E-Print Network [OSTI]

The design of strategies to generate efficient mixing is crucial for a variety of applications, particularly digital microfluidic devices that use small "discrete" fluid volumes (droplets) as fluid carriers and microreactors. In recent work, we have presented an approach for the generation and control of mixing inside a translating spherical droplet. This was accomplished by considering Stokes' flow within a droplet proceeding downstream to which we have superimposed time dependent (sinusoidal) rotation. The mixing obtained is the result of the stretching and folding of material lines which increase exponentially the surface contact between reagents. The mixing strategy relies on the generation of resonances between the steady and the unsteady part of the flow, which is achieved by tuning the parameters of the periodic rotation. Such resonances, in our system, offer the possibility of controlling both the location and the size of the mixing region within the droplet, which may be useful to manufacture inhomogeneous particles (such as Janus particles). While the period and amplitude of the periodic rotation play a major role, it is shown here by using a triangular function that the particular shape of the rotation (as a function of time) has a minor influence. This finding demonstrates the robustness of the proposed mixing strategy, a crucial point for its experimental realization.

R. Chabreyrie; D. Vainchtein; C. Chandre; P. Singh; N. Aubry

2008-09-02T23:59:59.000Z

130

Concentrating collectors  

SciTech Connect (OSTI)

Selected specifications from sixteen concentrating collector manufacturers are tabulated. Eleven are linear parabolic trough collectors, and the others include slats, cylindrical trough, linear Fresnel lens, parabolic cylindrical Fresnel lens, and two point focus parabolic dish collectors. Also included is a brief discussion of the operating temperatures and other design considerations for concentrating collectors. (LEW)

Not Available

1981-06-01T23:59:59.000Z

131

Wetting kinetics of water nano-droplet containing non-surfactant nanoparticles: A molecular dynamics study  

SciTech Connect (OSTI)

In this Letter, dynamic wetting of water nano-droplets containing non-surfactant gold nanoparticles on a gold substrate is examined via molecular dynamics simulations. The results show that the addition of non-surfactant nanoparticles hinders the nano-second droplet wetting process, attributed to the increases in both surface tension of the nanofluid and friction between nanofluid and substrate. The droplet wetting kinetics decreases with increasing nanoparticle loading and water-particle interaction energy. The observed wetting suppression and the absence of nanoparticle ordering near the contact line of nano-sized droplets differ from the wetting behaviors reported from nanofluid droplets of micron size or larger.

Lu, Gui [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China) [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China); Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Hu, Han; Sun, Ying, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States)] [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Duan, Yuanyuan, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)] [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)

2013-12-16T23:59:59.000Z

132

Airborne agent concentration analysis  

DOE Patents [OSTI]

A method and system for inferring airborne contaminant concentrations in rooms without contaminant sensors, based on data collected by contaminant sensors in other rooms of a building, using known airflow interconnectivity data. The method solves a least squares problem that minimizes the difference between measured and predicted contaminant sensor concentrations with respect to an unknown contaminant release time. Solutions are constrained to providing non-negative initial contaminant concentrations in all rooms. The method can be used to identify a near-optimal distribution of sensors within the building, when then number of available sensors is less than the total number of rooms. This is achieved by having a system-sensor matrix that is non-singular, and by selecting that distribution which yields the lowest condition number of all the distributions considered. The method can predict one or more contaminant initial release points from the collected data.

Gelbard, Fred

2004-02-03T23:59:59.000Z

133

Modelling of heating and evaporation of n-Heptane droplets: Towards a generic model for fuel droplet/particle conversion  

E-Print Network [OSTI]

is a part of a project that is targeted to optimize the pyrolysis process of biomass pellets for bio, study of pyrolysis of the biomass pellets and evaporation of the pyrolysis bio-oil droplets are two key of the biomass pellets in the pyrolysis reactor, for the purpose of optimiz- ing the pyrolysis process. Modelling

Yin, Chungen

134

Synoptically Forced Variability of Droplet Concentration over The Southeast Pacific Stratocumulus Region  

E-Print Network [OSTI]

uncertain,one source may be anthropogenic:oxidized sulfur emissions from the copper smelters along the coast

Zuidema, Paquita

135

M.H. Sherman, J.M. Logue, B.C. Singer, Infiltration Effects on Residential Pollutant Concentrations for Continuous and Intermittent Mechanical Ventilation Approaches -LBNL Report Number 3978-E  

E-Print Network [OSTI]

for Continuous and Intermittent Mechanical Ventilation Approaches - LBNL Report Number 3978-E M.H. Sherman, J and Intermittent Mechanical Ventilation Approaches - LBNL Report Number 3978-E 1 Infiltration Effects Energy Commission through Contract 500-08-06. LBNL Report Number 3978-E #12;M.H. Sherman, J.M. Logue, B

136

Droplet Number Prediction in the NCAR Community Atmosphere Model Steven Ghan Pacific Northwest National Laboratory  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesDataTranslocationDiurnalCommittee Draftfor $1.14 Per

137

The effect of turbulence on the stability of liquid jets and the resulting droplet size distributions. Third quarterly technical report, July 1, 1993--September 30, 1993  

SciTech Connect (OSTI)

Laminar and turbulent columns of liquids issuing from capillary tubes were studied in order to determine the effects of turbulence on the stability of liquid jets and to establish the influence of liquid turbulence on droplet size distributions after breakup. Two capillary tubes were chosen with diameters D{sub 1}=3.0mm and D{sub 2}=1.2mm; jet Reynolds numbers were 1000--30000, and 400--7200. For water injection into stagnant air, stability curve is bounded by a laminar portion, where a jet radius and {delta}{sub o} initial disturbance amplitude, and a fully developed turbulent portion characterized by high initial disturbance amplitude (ln(a/{delta}{sub o,T}) {approximately} 4.85). In the transition region, ln(a/{delta}{sub o}) is not single valued; it decreases with increasing Reynolds number. In absence of aerodynamic effects, turbulent jets are as stable as laminar jets. For this breakup mode turbulence propagates initial disturbances with amplitudes orders of magnitude larger than laminar jets ({delta}{sub o,T}=28{times}10{sup 6} {delta}{sub o,L}). Growth rates of initial disturbances are same for both laminar and turbulent columns with theoretical Weber values. Droplet size distribution is bi-modal; the number ratio of large (> D/2), to small (< D/2) droplets is 3 and independent of Reynolds number. For laminar flow optimum wavelength ({lambda}{sub opt}) corresponding to fastest growing disturbance is equal to 4.45D, exactly the theoretical Weber value. For turbulent flow conditions, the turbulent column segments. Typically, segments with lengths of one to several wavelengths, detach from the liquid jet. The long ligaments contract under the action of surface tension, resulting in droplet sizes larger than predicted by Rayleigh and Weber. For turbulent flow conditions, {lambda}{sub opt} = 9.2D, about 2 times the optimum Weber wavelength.

Mansour, A.; Chigier, N.

1993-12-01T23:59:59.000Z

138

Thermo-fluid Dynamics of Flash Atomizing Sprays and Single Droplet Impacts  

E-Print Network [OSTI]

speed in ambient gas sound speed in liquid force thicknessliquid density, V is the droplet impact velocity, and C l is the speed of sound

Vu, Henry

2010-01-01T23:59:59.000Z

139

Natural discharge after pulse and cooperative electrodes to enhance droplet velocity in digital microfluidics  

SciTech Connect (OSTI)

Digital Microfluidics (DMF) is a promising technology for biological/chemical micro-reactions due to its distinct droplet manageability via electronic automation, but the limited velocity of droplet transportation has hindered DMF from utilization in high throughput applications. In this paper, by adaptively fitting the actuation voltages to the dynamic motions of droplet movement under real-time feedback monitoring, two control-engaged electrode-driving techniques: Natural Discharge after Pulse (NDAP) and Cooperative Electrodes (CE) are proposed. They together lead to, for the first time, enhanced droplet velocity with lower root mean square voltage value.

Chen, Tianlan; Dong, Cheng; Gao, Jie; Jia, Yanwei; Mak, Pui-In, E-mail: pimak@umac.mo; Vai, Mang-I; Martins, Rui P. [State Key Laboratory of Analog and Mixed-Signal VLSI and FST-ECE, University of Macau, Macao (China)] [State Key Laboratory of Analog and Mixed-Signal VLSI and FST-ECE, University of Macau, Macao (China)

2014-04-15T23:59:59.000Z

140

Robust Extraction Interface for Coupling Droplet-Based and Continuous Flow Microfluidics  

SciTech Connect (OSTI)

Reliable and highly efficient extraction of droplets from oil to aqueous phase is key for downstream coupling with chemical separations and nonoptical detection methods such as amperometry and mass spectrometry. This paper presents an improved interface providing robust extraction for droplet-based poly(dimethylsiloxane) (PDMS) microfluidic devices. The extraction interface consists of an array of cylindrical posts with narrow apertures in between. The aqueous flow channel into which droplets coalesced was simply and selectively modified to be hydrophilic, while the continuous oil phase flow channel that contained encapsulated aqueous droplets retained a hydrophobic surface. The different surfaces on both sides of the extraction region form a highly stable liquid interface between the two immiscible phases, allowing rapid droplet transfer to the aqueous stream. Entire droplets could be completely extracted within broad ranges of aqueous and oil flow rates (0 - 1 and 0.1 - 1 uL/min, respectively). After extraction, the droplet contents could be transported electrophoretically or by pressure-driven flow to a monolithically integrated emitter for nano-electrospray ionization mass spectrometry (nanoESI-MS) analysis. This interface should be amenable to the separation and identification of droplet contents and on-line monitoring of in-droplet reactions.

Sun, Xuefei; Tang, Keqi; Smith, Richard D.; Kelly, Ryan T.

2012-03-07T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

ALARA notes, Number 8  

SciTech Connect (OSTI)

This document contains information dealing with the lessons learned from the experience of nuclear plants. In this issue the authors tried to avoid the `tyranny` of numbers and concentrated on the main lessons learned. Topics include: filtration devices for air pollution abatement, crack repair and inspection, and remote handling equipment.

Khan, T.A.; Baum, J.W.; Beckman, M.C. [eds.] [eds.

1993-10-01T23:59:59.000Z

142

Permanent Home Number: Residential Number  

E-Print Network [OSTI]

Permanent Home Number: Residential Number: Mobile: Please update my contact details. Signature nominated correspondence address as indicated below. Permanent Home Adress Residential Address Other Address (Must not be a PO Box) Residential Address (Must not be a PO Box) Other - Postal/Optional Address

Viglas, Anastasios

143

UNIT NUMBER:  

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

193 UNIT NUMBER: 197 UNIT NAME: CONCRETE RUBBLE PILE (30) REGULATORY STATUS: AOC LOCATION: Outside plant security fence, north of the plant on Big Bayou Creek on private property....

144

Generalisation of Levine's prediction for the distribution of freezing temperatures of droplets: A general singular model for ice nucleation  

E-Print Network [OSTI]

Models without an explicit time dependence, called singular models, are widely used for fitting the distribution of temperatures at which water droplets freeze. In 1950 Levine developed the original singular model. His key assumption was that each droplet contained many nucleation sites, and that freezing occurred due to the nucleation site with the highest freezing temperature. The fact that freezing occurs due to the maximum value out of large number of nucleation temperatures, means that we can apply the results of what is called extreme-value statistics. This is the statistics of the extreme, i.e., maximum or minimum, value of a large number of random variables. Here we use the results of extreme-value statistics to show that we can generalise Levine's model to produce the most general singular model possible. We show that when a singular model is a good approximation, the distribution of freezing temperatures should always be given by what is called the generalised extreme-value distribution. In addition...

Sear, Richard P

2013-01-01T23:59:59.000Z

145

Directing Droplets Using Microstructured Surfaces Ashutosh Shastry,* Marianne J. Case, and Karl F. Bohringer  

E-Print Network [OSTI]

the impeding force of contact angle hysteresis. In one case, the energy released by the condensation of steamDirecting Droplets Using Microstructured Surfaces Ashutosh Shastry,* Marianne J. Case, and Karl F has been employed to create a rough superhydrophobic surface with a contact angle gradient. Droplets

146

Local tuning of organic light-emitting diode color by dye droplet application  

E-Print Network [OSTI]

Local tuning of organic light-emitting diode color by dye droplet application T. R. Hebner and J. C 1998 We have demonstrated that fluorescent dyes may be introduced into previously fabricated polymer thin films by local application of a dye-containing droplet. The UV fluorescence spectra of the films

147

Microfluidic droplet encapsulation of highly motile single zoospores for phenotypic screening of an antioomycete chemical  

E-Print Network [OSTI]

Microfluidic droplet encapsulation of highly motile single zoospores for phenotypic screening for re-usable 3D polydimethylsiloxane (PDMS) microfluidic networks Biomicrofluidics 5, 036502 (2011://bmf.aip.org/about/rights_and_permissions #12;Microfluidic droplet encapsulation of highly motile single zoospores for phenotypic screening

Bhattacharyya, Madan Kumar

148

Sminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics  

E-Print Network [OSTI]

Séminaire du Groupe N2IS Manipulation of chemicals in droplet-based microfluidics Le 06 Septembre TOULOUSE Cedex 4 Résumé Droplet-based microfluidics has a tremendous potential for the miniaturization of chemicals in microfluidic systems is therefore a key to reliably downscale the assays from microtiter plates

Ingrand, François

149

Formation of Droplets and Mixing in Multiphase Microfluidics at Low Values of the Reynolds and the  

E-Print Network [OSTI]

Formation of Droplets and Mixing in Multiphase Microfluidics at Low Values of the Reynolds to mixing. Droplet- based microfluidics offers a simple method of achieving rapid mixing and transport of using flow of immiscible fluids in microfluidic channels to form plugs containing multiple aqueous

Ismagilov, Rustem F.

150

Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum particles  

E-Print Network [OSTI]

Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum Aluminum nanoparticles Microexplosion Particle aggregation a b s t r a c t The burning characteristics of fuel droplets containing nano and micron-sized aluminum particles were investigated. Particle size

Qiao, Li

151

Test Planning and Test Resource Optimization for Droplet-Based Microfluidic Systems*  

E-Print Network [OSTI]

Test Planning and Test Resource Optimization for Droplet-Based Microfluidic Systems* Fei Su, Sule of droplet- based microfluidic systems for safety-critical biomedical applications. In order to ensure reliability, microsystems incorporating microfluidic components must be tested adequately. In this paper, we

Chakrabarty, Krishnendu

152

Cross-Contamination Avoidance for Droplet Routing in Digital Microfluidic Biochips  

E-Print Network [OSTI]

Cross-Contamination Avoidance for Droplet Routing in Digital Microfluidic Biochips Yang Zhao, USA Abstract-- Recent advances in droplet-based digital microfluidics have enabled biochip devices that share unit cells in the microfluidic array. Two real-life biochemical applications are used to evaluate

Chakrabarty, Krishnendu

153

Concurrent Testing of Droplet-Based Microfluidic Systems for Multiplexed Biomedical Assays*  

E-Print Network [OSTI]

Concurrent Testing of Droplet-Based Microfluidic Systems for Multiplexed Biomedical Assays* Fei Su methodology for detecting catastrophic faults in droplet-based microfluidic systems and investigate-based microfluidic array that was fabricated and used to perform multiplexed glucose and lactate assays. The test

Chakrabarty, Krishnendu

154

Spherically symmetric droplet combustion of three and four component miscible mixtures as surrogates for  

E-Print Network [OSTI]

.48/7.28/22.83, respectively, were previously shown to replicate certain gas phase combustion properties of JetSpherically symmetric droplet combustion of three and four component miscible mixtures This study examines the droplet combustion characteristics of three and four component miscible liquid

Walter, M.Todd

155

RESEARCH PAPER Scale-up and control of droplet production in coupled microfluidic  

E-Print Network [OSTI]

RESEARCH PAPER Scale-up and control of droplet production in coupled microfluidic flow Springer-Verlag 2012 Abstract A single microfluidic chip consisting of six microfluidic flow-focusing devices operating in parallel was developed to investigate the feasibility of scaling microfluidic droplet

Rothstein, Jonathan

156

1 Copyright 2006 by ASME A NUMERICAL ANALYSIS OF GROWING WATER DROPLET INSIDE AN AIR  

E-Print Network [OSTI]

1 Copyright © 2006 by ASME A NUMERICAL ANALYSIS OF GROWING WATER DROPLET INSIDE AN AIR SUPPLY is performed to analyze the growth and departure of a water droplet inside a minichannel with air flowing and air coming in through the channel inlet. This is a typical situation encountered in the gas flow

Kandlikar, Satish

157

Controlled Dispensing and Mixing of Pico- to Nanoliter Volumes Using On-Demand Droplet-Based Microfluidics  

SciTech Connect (OSTI)

We present an integrated droplet-on-demand microfluidic platform for dispensing, mixing, incubating, extracting and analyzing by mass spectrometry pico- to nanoliter sized droplets. Droplet generation is accomplished using computer-controlled pneumatic valves. Controlled actuation of valves for different aqueous streams enables controlled dosing and rapid mixing of reagents within droplets in the droplet generation area or in a region with widening channel cross-section. Following incubation, which takes place while droplets travel in the oil stream, the droplet contents are extracted to an aqueous channel for subsequent ionization at an integrated nanoelectrospray emitter. As an initial demonstration of the platform, rapid enzymatic digestions of a model protein are performed in droplets and detected on-line by nanoelectrospray ionization mass spectrometry.

Sun, Xuefei; Tang, Keqi; Smith, Richard D.; Kelly, Ryan T.

2013-07-08T23:59:59.000Z

158

Photolytic processing of secondary organic aerosols dissolved in cloud droplets  

SciTech Connect (OSTI)

The effect of UV irradiation on the molecular composition of aqueous extracts of secondary organic aerosol (SOA) was investigated. SOA was prepared by the dark reaction of ozone and d-limonene at 0.05 - 1 ppm precursor concentrations and collected with a particle-into-liquid sampler (PILS). The PILS extracts were photolyzed by 300 - 400 nm radiation for up to 24 hours. Water-soluble SOA constituents were analyzed using high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) at different stages of photolysis for all SOA precursor concentrations. Exposure to UV radiation increased the average O/C ratio and decreased the average double bond equivalent (DBE) of the dissolved SOA compounds. Oligomeric compounds were significantly reduced by photolysis relative to the monomeric compounds. Direct pH measurements showed that compounds containing carboxylic acids increased upon photolysis. Methanol reactivity analysis revealed significant photodissociation of molecules containing carbonyl groups and formation of carboxylic acids. Aldehydes, such as limononaldehyde, were almost completely removed. The removal of carbonylswas confirmed by the UV-Vis absorption spectroscopy of the SOA extracts where the absorbance in the carbonyl n??* band decreased significantly upon photolysis. The effective quantum yield (the number of carbonyls destroyed per photon absorbed) was estimated as ~ 0.03. The concentration of peroxides did not change significantly during photolysis as quantified with an iodometric test. Although organic peroxides were photolyzed, the likely end products of photolysis were smaller peroxides, including hydrogen peroxide, resulting in a no net change in the peroxide content.

Bateman, Adam P.; Nizkorodov, Serguei; Laskin, Julia; Laskin, Alexander

2011-05-26T23:59:59.000Z

159

Cavitation within a dropletCavitation within a droplet G. L. Heijnen1,2, P. A. Quinto-Su2, X. Zhao2, C. D. Ohl1,2  

E-Print Network [OSTI]

Cavitation within a dropletCavitation within a droplet G. L. Heijnen1,2, P. A. Quinto-Su2, X. Zhao2 University, Singapore. A cavitation bubble expanding and collapsing inside a liquid droplet creates two high jets taken 400µs after the cavitation bubble has been created. The central jet is surrounded

Ohl, Claus-Dieter

160

A Superheated Droplet Detector for Dark Matter Search  

E-Print Network [OSTI]

We discuss the operation principle of a detector based on superheated droplets of Freon-12 and its feasibility for the search of weakly interacting cold dark matter particles. In particular we are interested in a neutralino search experiment in the mass range from 10 to 10^4 GeV/c^2 and with a sensitivity of better than 10^-2 events/kg/d. We show that our new proposed detector can be operated at ambient pressure and room temperature in a mode where it is exclusively sensitive to nuclear recoils like those following neutralino interactions, which allows a powerful background discrimination. An additional advantage of this technique is due to the fact that the detection material, Freon-12, is cheap and readily available in large quantities. Moreover we were able to show that piezoelectric transducers allow efficient event localization in large volumes.

Hamel, L A; Rainville, L; Sur, B; Zacek, V

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

A Superheated Droplet Detector for Dark Matter Search  

E-Print Network [OSTI]

We discuss the operation principle of a detector based on superheated droplets of Freon-12 and its feasibility for the search of weakly interacting cold dark matter particles. In particular we are interested in a neutralino search experiment in the mass range from 10 to 10^4 GeV/c^2 and with a sensitivity of better than 10^-2 events/kg/d. We show that our new proposed detector can be operated at ambient pressure and room temperature in a mode where it is exclusively sensitive to nuclear recoils like those following neutralino interactions, which allows a powerful background discrimination. An additional advantage of this technique is due to the fact that the detection material, Freon-12, is cheap and readily available in large quantities. Moreover we were able to show that piezoelectric transducers allow efficient event localization in large volumes.

L. A. Hamel; L. Lessard; L. Rainville; B. Sur; V. Zacek

1996-12-15T23:59:59.000Z

162

Low-Cost, Lightweight Solar Concentrators  

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

Concentrators California Institute of TechnologyJet Propulsion Laboratory Award Number:0595-1612 | April 18, 2013 | Ganapathi * Mirror module development has been approached with...

163

Aerosol formation from high-velocity uranium drops: Comparison of number and mass distributions. Final report  

SciTech Connect (OSTI)

This report presents the results of an experimental study of the aerosol produced by the combustion of high-velocity molten-uranium droplets produced by the simultaneous heating and electromagnetic launch of uranium wires. These tests are intended to simulate the reduction of high-velocity fragments into aerosol in high-explosive detonations or reactor accidents involving nuclear materials. As reported earlier, the resulting aerosol consists mainly of web-like chain agglomerates. A condensation nucleus counter was used to investigate the decay of the total particle concentration due to coagulation and losses. Number size distributions based on mobility equivalent diameter obtained soon after launch with a Differential Mobility Particle Sizer showed lognormal distributions with an initial count median diameter (CMD) of 0.3 {mu}m and a geometric standard deviation, {sigma}{sub g} of about 2; the CMD was found to increase and {sigma}{sub g} decrease with time due to coagulation. Mass size distributions based on aerodynamic diameter were obtained for the first time with a Microorifice Uniform Deposit Impactor, which showed lognormal distributions with mass median aerodynamic diameters of about 0.5 {mu}m and an aerodynamic geometric standard deviation of about 2. Approximate methods for converting between number and mass distributions and between mobility and aerodynamic equivalent diameters are presented.

Rader, D.J.; Benson, D.A.

1995-05-01T23:59:59.000Z

164

MOLECULAR DYNAMICS SIMULATION OF HETEROGENEOUS NUCLEATION OF LIQUID DROPLET ON SOLID SURFACE  

E-Print Network [OSTI]

such as the quantum dot generation. We have simulated the equilibrium liquid droplet on the solid surface simulation on the bubble nucleation process on the solid surface [2]. In the meantime, direct molecular

Maruyama, Shigeo

165

Studies on the ion-droplet mixed regime in colloid thrusters  

E-Print Network [OSTI]

Colloid thrusters working with mixtures of ions and droplets are gradually becoming an alternative technology for space micro-propulsion needs in missions requiring high position controllability, compactness and low power ...

Lozano-Tovar, Paulo Csar, 1970-

2003-01-01T23:59:59.000Z

166

Magnetic detection of underground pipe using timed-release marking droplets  

DOE Patents [OSTI]

A system 10 and method of detecting an underground pipe 12 injects magnetic marking droplets 16 into the underground pipe 12 which coat the inside of the pipe 12 and may be detected from aboveground by a magnetometer 28. The droplets 16 include a non-adhesive cover 32 which allows free flow thereof through the pipe 12, with the cover 32 being ablatable for the timed-release of a central core 30 containing magnetic particles 30a which adhere to the inside of the pipe 12 and are detectable from aboveground. The rate of ablation of the droplet covers 32 is selectively variable to control a free flowing incubation zone 12a for the droplets 16 and a subsequent deposition zone 12b in which the magnetic particles 30a are released for coating the pipe 12.

Powell, James R. (Shoreham, NY); Reich, Morris (Kew Garden Hills, NY)

1996-12-17T23:59:59.000Z

167

Magnetic detection of underground pipe using timed-release marking droplets  

DOE Patents [OSTI]

A system and method are disclosed of detecting an underground pipe by injecting magnetic marking droplets into the underground pipe which coat the inside of the pipe and may be detected from aboveground by a magnetometer. The droplets include a non-adhesive cover which allows free flow through the pipe, with the cover being ablatable for the timed-release of a central core containing magnetic particles which adhere to the inside of the pipe and are detectable from aboveground. The rate of ablation of the droplet covers is selectively variable to control a free flowing incubation zone for the droplets and a subsequent deposition zone in which the magnetic particles are released for coating the pipe. 6 figs.

Powell, J.R.; Reich, M.

1996-12-17T23:59:59.000Z

168

A trajectory equation for walking droplets : hydrodynamic pilot-wave theory  

E-Print Network [OSTI]

Yves Couder and coworkers have demonstrated that millimetric droplets walking on a vibrating fluid bath exhibit several features previously thought to be peculiar to the microscopic quantum realm, including single-particle ...

Oza, Anand Uttam

2014-01-01T23:59:59.000Z

169

Development of a uniform-droplet spray apparatus for high melting temperature metals  

E-Print Network [OSTI]

The building and operation of a high-temperature uniform droplet spraying (UDS) apparatus extend the performance and capabilities of powder based manufacturing processes. Although the main concepts of operation of the ...

Joumaa, Hady K

2005-01-01T23:59:59.000Z

170

Synchronization of Washing Operations with Droplet Routing for Cross-Contamination Avoidance in Digital Microfluidic  

E-Print Network [OSTI]

in Digital Microfluidic Biochips Yang Zhao and Krishnendu Chakrabarty Department of Electrical and Computer Engineering Duke University, Durham, NC 27708, USA ABSTRACT Digital microfluidic biochips are being utilized Terms Algorithms, Performance, Design. Keywords Droplet-based microfluidics, electrowetting, lab

Chakrabarty, Krishnendu

171

Integrated Droplet Routing and Defect Tolerance in the Synthesis of Digital  

E-Print Network [OSTI]

11 Integrated Droplet Routing and Defect Tolerance in the Synthesis of Digital Microfluidic Biochips TAO XU and KRISHNENDU CHAKRABARTY Duke University Microfluidic biochips are revolutionizing high to digital microfluidic platforms, the need for design automation techniques is being increasingly felt

Chakrabarty, Krishnendu

172

Tunable spatial heterogeneity in structure and composition within aqueous microfluidic droplets  

E-Print Network [OSTI]

In this paper, we demonstrate biphasic microfluidic droplets with broadly tunable internal structures, from simple near-equilibrium drop-in-drop morphologies to complex yet uniform non-equilibrium steady-state structures. ...

Hui, Sophia Lee Su

173

Microfluidic device incorporating closed loop feedback control for uniform and tunable production of micro-droplets  

E-Print Network [OSTI]

Microfluidic device incorporating closed loop feedback control for uniform and tunable production, we have designed a microfluidic-based technology utilizing elementary microchannel geometries initial development using flow-focusing microfluidic geometry for droplet formation, computer

Rothstein, Jonathan

174

Ice nucleation and droplet formation by bare and coated soot particles  

E-Print Network [OSTI]

We have studied ice formation at temperatures relevant to homogeneous and heterogeneous ice nucleation, as well as droplet activation and hygroscopicity, of soot particles of variable size and composition. Coatings of ...

Friedman, Beth

175

Physico-chemical hydrodynamics of droplets on textured surfaces with engineered micro/nanostructures  

E-Print Network [OSTI]

Understanding physico-chemical hydrodynamics of droplets on textured surfaces is of fundamental and practical significance for designing a diverse range of engineered surfaces such as low-reflective, self-cleaning or ...

Park, Kyoo Chul

2013-01-01T23:59:59.000Z

176

An AFM Study of the Deformation and Nanorheology of Cross-Linked PDMS Droplets  

E-Print Network [OSTI]

to understand the interaction and stability of bubbles in foams and froths, droplets in emulsions to elastic JKR theory.16 In addition the deformation and elastic vibration of glass lenses have been measured

Attard, Phil

177

Local droplet etching Nanoholes, quantum dots, and air-gap heterostructures  

SciTech Connect (OSTI)

Local droplet etching (LDE) allows the self-organized generation of nanoholes in semiconductor surfaces and is fully compatible with molecular beam epitaxy (MBE). The influence of the process parameters as well as of droplet and substrate materials on the LDE nanohole morphology is discussed. Furthermore, recent applications of LDE, the fabrication of quantum dots by hole filling and the creation of air-gap heterostructures are addressed.

Heyn, Ch.; Sonnenberg, D.; Graf, A.; Kerbst, J.; Stemmann, A.; Hansen, W. [Institute of Applied Physics, University of Hamburg, Jungiusstr. 11, 20355 Hamburg (Germany)

2014-05-15T23:59:59.000Z

178

Light-induced rotation of dye-doped liquid crystal droplets  

E-Print Network [OSTI]

We investigate both theoretically and experimentally the rotational dynamics of micrometric droplets of dye-doped and pure liquid crystal induced by circularly and elliptically polarized laser light. The droplets are dispersed in water and trapped in the focus of the laser beam. Since the optical torque acting on the molecular director is known to be strongly enhanced in light-absorbing dye-doped materials, the question arises whether a similar enhancement takes place also for the overall optical torque acting on the whole droplets. We searched for such enhancement by measuring and comparing the rotation speed of dye-doped droplets induced by a laser beam having a wavelength either inside or outside the dye absorption band, and also comparing it with the rotation of pure liquid crystal droplets. No enhancement was found, confirming that photoinduced dye effects are only associated with an internal exchange of angular momentum between orientational and translational degrees of freedom of matter. Our result provides also the first direct experimental proof of the existence of a photoinduced stress tensor in the illuminated dye-doped liquid crystal. Finally, peculiar photoinduced dynamical effects are predicted to occur in droplets in which the molecular director is not rigidly locked to the flow, but so far they could not be observed.

C. Manzo; D. Paparo; L. Marrucci; I. Janossy

2007-12-05T23:59:59.000Z

179

On-chip real-time single-copy polymerase chain reaction in picoliter droplets  

SciTech Connect (OSTI)

The first lab-on-chip system for picoliter droplet generation and PCR amplification with real-time fluorescence detection has performed PCR in isolated droplets at volumes 10{sup 6} smaller than commercial real-time PCR systems. The system utilized a shearing T-junction in a silicon device to generate a stream of monodisperse picoliter droplets that were isolated from the microfluidic channel walls and each other by the oil phase carrier. An off-chip valving system stopped the droplets on-chip, allowing them to be thermal cycled through the PCR protocol without droplet motion. With this system a 10-pL droplet, encapsulating less than one copy of viral genomic DNA through Poisson statistics, showed real-time PCR amplification curves with a cycle threshold of {approx}18, twenty cycles earlier than commercial instruments. This combination of the established real-time PCR assay with digital microfluidics is ideal for isolating single-copy nucleic acids in a complex environment.

Beer, N R; Hindson, B; Wheeler, E; Hall, S B; Rose, K A; Kennedy, I; Colston, B

2007-04-20T23:59:59.000Z

180

Concentrating Solar Power Forum Concentrating Photovoltaics (Presentation)  

SciTech Connect (OSTI)

This presentation's summaries: a convenient truth, comparison of three concentrator technologies, value of high efficiency, and status of industry.

Kurtz, S.

2008-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Research on droplet formation for application to kraft black liquors: Final report: Tasks I and III, report No. 4  

SciTech Connect (OSTI)

The overall objective of this project is to generate technical data with which to design nozzles for kraft black liquor recovery boilers which can reduce under and over size droplets and adjust for changing black liquor properties and production requirements. The research is organized into five tasks: Droplet formation from a single jet, theoretical and experimental--ambient gas medium; Surface tensions of black liquor; Aerodynamic/hydrodynamic stability/instability of droplets once formed; Black liquor droplet formation from a single jet--furnace gas medium; Prototype of a new nozzle design. 88 figs.

Stockel, I.H.

1988-10-01T23:59:59.000Z

182

Application of small-angle neutron scattering to the study of forces between magnetically chained monodisperse ferrofluid emulsion droplets  

SciTech Connect (OSTI)

The optical magnetic chaining technique (MCT) developed by Leal-Calderon, Bibette and co-workers in the 1990 s allows precise measurements of force profiles between droplets in monodisperse ferrofluid emulsions. However, the method lacks an in-situ determination of droplet size and therefore requires the combination of separately acquired measurements of droplet chain periodicity versus an applied magnetic field from optical Bragg scattering and droplet diameter inferred from dynamic light scattering (DLS) to recover surface force-distance profiles between the colloidal particles. Compound refractive lens (CRL) focussed small-angle scattering (SANS) MCT should result in more consistent measurements of droplet size (form factor measurements in the absence of field) and droplet chaining period (from structure factor peaks when the magnetic field is applied); and, with access to shorter length scales, extend force measurements to closer approaches than possible by optical measurements. We report on CRL-SANS measurements of monodisperse ferrofluid emulsion droplets aligned in straight chains by an applied field perpendicular to the incident beam direction. Analysis of the scattering from the closely spaced droplets required algorithms that carefully treated resolution and its effect on mean scattering vector magnitudes in order to determine droplet size and chain periods to sufficient accuracy. At lower applied fields scattering patterns indicate structural correlations transverse to the magnetic field direction due to the formation of intermediate structures in early chain growth.

Jain, Dr Nirmesh [University of Sydney, Australia] [University of Sydney, Australia; Liu, Dr C K [Institute of Materials research and Engineering, A-STAR, Singapore] [Institute of Materials research and Engineering, A-STAR, Singapore; Hawkett, Dr B. S. [University of Sydney, Australia] [University of Sydney, Australia; Warr, G. G. [University of Sydney, Australia] [University of Sydney, Australia; Hamilton, William A [ORNL] [ORNL

2014-01-01T23:59:59.000Z

183

Elemental diffusion during the droplet epitaxy growth of In(Ga)As/GaAs(001) quantum dots by metal-organic chemical vapor deposition  

SciTech Connect (OSTI)

Droplet epitaxy is an important method to produce epitaxial semiconductor quantum dots (QDs). Droplet epitaxy of III-V QDs comprises group III elemental droplet deposition and the droplet crystallization through the introduction of group V elements. Here, we report that, in the droplet epitaxy of InAs/GaAs(001) QDs using metal-organic chemical vapor deposition, significant elemental diffusion from the substrate to In droplets occurs, resulting in the formation of In(Ga)As crystals, before As flux is provided. The supply of As flux suppresses the further elemental diffusion from the substrate and promotes surface migration, leading to large island formation with a low island density.

Chen, Z. B.; Chen, B.; Wang, Y. B.; Liao, X. Z., E-mail: xiaozhou.liao@sydney.edu.au [School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006 (Australia); Lei, W. [School of Electrical, Electronic and Computer Engineering, The University of Western Australia, Perth, WA 6009 (Australia); Tan, H. H.; Jagadish, C. [Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200 (Australia); Zou, J. [Materials Engineering and Centre for Microscopy and Microanalysis, The University of Queensland, Brisbane, QLD 4072 (Australia); Ringer, S. P. [School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006 (Australia); Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW 2006 (Australia)

2014-01-13T23:59:59.000Z

184

Oscillatory Flame Response in Acoustically Coupled Fuel Droplet Combustion  

E-Print Network [OSTI]

in a lean, premixed step combustor. Number 96-0819, 1996. [stagnation point reverse flow combustor. Proceedings of theheat transfer rates to combustor walls, and potential for

Sevilla Esparza, Cristhian Israel

2013-01-01T23:59:59.000Z

185

Concentrated Solar Thermoelectric Power  

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

CONCENTRATING SOLAR POWER PROGRAM REVIEW 2013 Concentrated Solar Thermoelectric Power Principal Investigator: Prof. Gang Chen Massachusetts Institute of Technology Cambridge, MA...

186

Concentrating Photovoltaics (Presentation)  

SciTech Connect (OSTI)

Solar is growing rapidly, and the concentrating photovoltaics industry-both high- and low-concentration cell approaches-may be ready to ramp production in 2009.

Kurtz, S.

2009-01-20T23:59:59.000Z

187

Synthesis, droplet combustion, and sooting characteristics of biodiesel produced from waste vegetable oils  

SciTech Connect (OSTI)

In light of the potential of fatty acid methyl ester (FAME, i.e. biodiesel) as a renewable energy source, an innovative acid catalyzed process was developed for the synthesis of biodiesel from waste vegetable oils. The synthesized biodiesels were analytically characterized for their major components, molar fraction and molecular weight of each component, the average molecular weight, and the heat of combustion. Their droplet combustion characteristics in terms of the burning rate, flame size, and sooting tendency were subsequently determined in a high-temperature, freely-falling droplet apparatus. Results show that the biodiesel droplet has higher burning rate, and that biodiesel in general has a lower propensity to soot because its molecular oxygen content promotes the oxidation of the soot precursors.

Li, T. X.; Zhu, D. L.; Akafuah, N.; Saito, K.; Law, C. K.

2011-01-01T23:59:59.000Z

188

Magnetic response of holographic Lifshitz superconductors:Vortex and Droplet solutions  

E-Print Network [OSTI]

In this paper a holographic model of $s$-wave superconductor with anisotropic Lifshitz scaling has been considered. In the presence of an external magnetic field our holographic model exhibits both vortex and droplet solutions. Based on analytic methods we have shown that the anisotropy has no effect on the vortex and droplet solutions whereas it may affect the condensation. Our vortex solution closely resembles the Ginzburg-Landau theory and a relation between the upper critical magnetic field and superconducting coherence length has been speculated from this comparison. Using Sturm-Liouville method, the effect of anisotropy on the critical parameters in insulator/superconductor phase transitions has been analyzed.

Arindam Lala

2014-07-04T23:59:59.000Z

189

Fermi-liquid droplets in liquid-solid solutions of the helium isotopes  

SciTech Connect (OSTI)

For temperatures below phase separation of 1000-ppm /sup 3/He in solid /sup 4/He we measure a heat capacity ..gamma..T for a pressure between melting of pure /sup 3/He and /sup 4/He. Together with the confined sample geometry this results in liquid /sup 3/He droplets (phiapprox.10/sup 3/A) either dilute or pure depending on the phase diagram topology which is discussed theoretically. In the case of a pure /sup 3/He droplet we find an anomalously high effective mass m*/m=10, which could be explained by paramagnon effects enhanced by the confined geometry.

Hebral, B.; Greenberg, A.S.; Beal-Monod, M.T.; Papoular, M.; Frossati, G.; Godfrin, H.; Thoulouze, D.

1981-01-05T23:59:59.000Z

190

Microfluidic production of monodisperse functional o/w droplets and study of their reversible pH dependent aggregation behavior  

E-Print Network [OSTI]

Microfluidic production of monodisperse functional o/w droplets and study of their reversible p DOI: 10.1039/c1sm05087g We report the use of microfluidics for the production of monodisperse oil of individual droplets. Introduction Microdroplets in microfluidics have attracted enormous atten- tion

Cicuta, Pietro

191

The spherically symmetric droplet burning characteristics of Jet-A and biofuels derived from camelina and tallow  

E-Print Network [OSTI]

The spherically symmetric droplet burning characteristics of Jet-A and biofuels derived from the biofuels due to its higher aromatic content. " Droplet burning rates of camelina and tallow HRJ fuel Available online 1 March 2013 Keywords: Alternative jet fuel Hydroprocessed biofuel Spherically symmetric

Walter, M.Todd

192

A multi-color fast-switching microfluidic droplet dye laser Sindy K. Y. Tang,a  

E-Print Network [OSTI]

A multi-color fast-switching microfluidic droplet dye laser Sindy K. Y. Tang,a Zhenyu Li,b Adam R DOI: 10.1039/b914066b We describe a multi-color microfluidic dye laser operating in whis- pering gallery mode based on a train of alternating droplets con- taining solutions of different dyes; this laser

Prentiss, Mara

193

Light-induced rotation of dye-doped liquid crystal droplets C. Manzo, D. Paparo, and L. Marrucci*  

E-Print Network [OSTI]

Light-induced rotation of dye-doped liquid crystal droplets C. Manzo, D. Paparo, and L. Marrucci theoretically and experimentally the rotational dynamics of micrometric droplets of dye-doped and pure liquid to be strongly enhanced in light-absorbing dye-doped materials, the question arises whether a similar enhancement

Marrucci, Lorenzo

194

Optimization of Droplet Routing for an n-Plex Bioassay on a Digital Microfluidic Lab-on-Chip  

E-Print Network [OSTI]

Optimization of Droplet Routing for an n-Plex Bioassay on a Digital Microfluidic Lab-on-Chip Yang on an electrowetting-based digital microfluidic lab-on-chip. The n product droplets of the n-plex bioassay are detected for rapid and point-of-care diagnosis of such disorders. Digital microfluidic lab-on-chip is an emerging

Chakrabarty, Krishnendu

195

MNHMT2009-18491 An Experimental Investigation of Droplet Detachment in High-Speed Microchannel Air Flow  

E-Print Network [OSTI]

MNHMT2009-18491 An Experimental Investigation of Droplet Detachment in High-Speed Microchannel Air detachment in a confined microchannel under highly inertial air flow. Experimental observations show of magnitude sense. These results show that although shear stress at the droplet-air interface may contribute

Hidrovo, Carlos H.

196

LARGE DROPLET IMPACT ON WATER and F. T. Smith  

E-Print Network [OSTI]

of applications for example in the chocolate, spray-coating and aeronautics industries but in particular approach is to start with a simple model, initially neglecting viscosity (the typical Reynolds number

Purvis, Richard

197

On-chip single-copy real-time reverse-transcription PCR in isolated picoliter droplets  

SciTech Connect (OSTI)

The first lab-on-chip system for picoliter droplet generation and RNA isolation, followed by reverse transcription, and PCR amplification with real-time fluorescence detection in the trapped droplets has been developed. The system utilized a shearing T-junction in a fused silica device to generate a stream of monodisperse picoliter-scale droplets that were isolated from the microfluidic channel walls and each other by the oil phase carrier. An off-chip valving system stopped the droplets on-chip, allowing thermal cycling for reverse transcription and subsequent PCR amplification without droplet motion. This combination of the established real-time reverse transcription-PCR assay with digital microfluidics is ideal for isolating single-copy RNA and virions from a complex environment, and will be useful in viral discovery and gene-profiling applications.

Beer, N R; Wheeler, E; Lee-Houghton, L; Watkins, N; Nasarabadi, S; Hebert, N; Leung, P; Arnold, D; Bailey, C; Colston, B

2007-12-19T23:59:59.000Z

198

Rerngchai ArayanarakoolISBN: 978-90-365-3431-4 TowardSingleEnzymeAnalysisinaDroplet-basedMicroandNanofluidicSystemRerngchaiArayanarakool  

E-Print Network [OSTI]

microfluidics and enzyme kinetics 6 I. Droplet-based Microfluidics 7 a. Characteristics of droplet-based microfluidics 7 b. Droplet generation 10 (1) T-junction system 10 (2) Flow-focusing system 11 (3) Co channel 45 II. Material selection 46 III. Polydimethylsiloxane (PDMS)based microfluidic device 49 IV

Wieringa, Roel

199

Curvature-Dependent Surface Tension of a Growing Droplet Michael P. Moody and Phil Attard  

E-Print Network [OSTI]

Curvature-Dependent Surface Tension of a Growing Droplet Michael P. Moody and Phil Attard School-vapor interfaces. It is shown that the surface tension decreases approximately linearly with the supersaturation ratio and that it vanishes at the spinodal. The effect leads to a curvature-dependent surface tension

Attard, Phil

200

Study of the Effects of Surface Morphology and Droplet Growth Dynamics on Condensation Heat Transfer  

E-Print Network [OSTI]

system 2 on Sample 3 (50??m micropillar spacing hybrid surface) ............................................................................................... 66 Figure 24. Environmental scanning electron microscopy (ESEM) time- sequence images... tension gradients to promote and induce a droplet removal mechanism. They concluded that their gradient surface exhibited a higher heat transfer coefficient than a hydrophobic silane based surface. More recently, environmental scanning electron...

Yao, Chun-Wei

2014-04-23T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Erratum to: Neonicotinoid insecticides translocated in guttated droplets of seed-treated maize and wheat  

E-Print Network [OSTI]

Erratum to: Neonicotinoid insecticides translocated in guttated droplets of seed-treated maize Gasur and the fungicide Efa of the treated seed in triticale have to be reduced by the factor 100 (which corresponds to the recommended application rate): Seeds of triticale were treated with a combination

202

Local Heating of Discrete Droplets Using Magnetic Porous Silicon-Based Photonic Crystals  

E-Print Network [OSTI]

of conventional microfluidic channel and heating systems. Introduction Much of the work on microfluidics to dateLocal Heating of Discrete Droplets Using Magnetic Porous Silicon-Based Photonic Crystals Ji-Ho Park and Technology (HarVard-MIT) and Department of Electrical Engineering and Computer Science, Massachusetts

Bhatia, Sangeeta

203

Droplet impingement and vapor layer formation on hot hydrophobic surfaces Ji Yong Park1  

E-Print Network [OSTI]

diameter) water droplets that bounce from hydrophobic surfaces whose temperature exceeds the boiling point angle. The residence time determined by high-speed imaging is constant at 1 msec over the temperature-speed imaging is approximately independent of the temperature of the hot surface. Measurements of thermal

Cahill, David G.

204

Pervaporation of Emulsion Droplets for the Templated Assembly of Spherical Particles: A Population Balance Model  

E-Print Network [OSTI]

, but are immiscible with each other as the solvent volume decreases.4­9 Water-in-oil emulsions, where the water, evaporation, population balance, pervaporation, mathematical modeling, transport Introduction The emulsionPervaporation of Emulsion Droplets for the Templated Assembly of Spherical Particles: A Population

Braatz, Richard D.

205

Direct Detection of Membrane Channels from Gels Using Water-in-Oil Droplet Bilayers  

E-Print Network [OSTI]

Direct Detection of Membrane Channels from Gels Using Water-in-Oil Droplet Bilayers Andrew J. Heron lipid bilayers serve as simplified models of biological membranes and are widely used for the electrical in many situations. Alternative emulsion-based approaches to forming bilayers have also been reported,15

Wallace, Mark

206

Modelin combustion of multicomponent fuel droplets: formulation and application to transportation fuels  

E-Print Network [OSTI]

rate constant was obtained as 0.344mm2/sec which compared well with the unsteady results of Reitz et al. The total evaporation time of the droplet at an ambience of 1000K was estimated to be around 0.63 seconds. Next, the results of evaporation...

Vittilapuram Subramanian, Kannan

2006-04-12T23:59:59.000Z

207

Self-assembly of triangular quantum dots on (111)A substrates by droplet epitaxy  

SciTech Connect (OSTI)

We report the self-assembly of triangular GaAs quantum dots (QDs) on (111)A substrates using droplet epitaxy. Shape transition from hexagonal to triangular QDs is observed with increasing crystallizing temperature. The mechanism of the morphological change is discussed in terms of different growth rates of step edges on a (111)A substrate.

Jo, M.; Mano, T.; Abbarchi, M.; Kuroda, T. [Advanced Photonics Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan); Sakoda, K. [Advanced Photonics Materials Unit, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan and Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577 (Japan)

2014-05-15T23:59:59.000Z

208

Microwave dielectric heating of non-aqueous droplets in a microfluidic device for nanoparticle synthesis  

E-Print Network [OSTI]

of segmented ow reactors, in comparison with their continuous counterparts, allows nanoliter volumes. Recent developments have been directed toward scaling out of the processes by adding reactors working to directly determine the temperature inside a single droplet. The maximum temperature achieved

209

Two dimensional thermoelectric platforms for thermocapillary droplet Man-Chi Liu,ac  

E-Print Network [OSTI]

the cooling function relies on the natural conduction and/or convection. A thermoelectric (TE) chipTwo dimensional thermoelectric platforms for thermocapillary droplet actuation Man-Chi Liu,ac Jin be driven to the cooler regions via surface tension modulation by varying the temperature. The usual method

Lin, Pei-Chun

210

Droplet Routing in the Synthesis of Digital Microfluidic Biochips* Fei Su, William Hwang and Krishnendu Chakrabarty  

E-Print Network [OSTI]

Droplet Routing in the Synthesis of Digital Microfluidic Biochips* Fei Su, William Hwang in the IC industry.Recent advances in microfluidics are expected to lead to sensor systems for high microfluidic biochip into two major phases, i.e., architectural-level synthesis and physical design

Chakrabarty, Krishnendu

211

Defect-Aware Synthesis of Droplet-Based Microfluidic Biochips* , Krishnendu Chakrabarty  

E-Print Network [OSTI]

Defect-Aware Synthesis of Droplet-Based Microfluidic Biochips* Tao Xu , Krishnendu Chakrabarty Corporation, Folsom, CA Abstract Recent advances in microfluidics technology have led to the emergence of miniaturized biochip devices for biochemical analysis. A promising category of microfluidic biochips relies

Chakrabarty, Krishnendu

212

Uniform particle-droplet partitioning of 18 organic and elemental components measured in and below  

E-Print Network [OSTI]

.3 mm dry diameter) and droplet residual (above 9 mm ambient diameter) filter samples analyzed by Fourier Transform Infrared (FTIR) spectroscopy and X-ray Fluorescence (XRF) were dominated by sea salt the population of aerosol particles may consist of external mixtures of multiple types of pure components, where

Russell, Lynn

213

Retinyl Ester Storage Particles (Retinosomes) from the Retinal Pigmented Epithelium Resemble Lipid Droplets in Other  

E-Print Network [OSTI]

retinosomes are structures spe- cific to the eye or similar to lipid droplets in other organs functions such as nourishing and removing metabolic waste products, absorbing excess light, phagocytosis of photoreceptor fragments, and recycling the visual chro- mophore, 11-cis-retinal (26). Recycling of 11-cis

Palczewski, Krzysztof

214

Concentrating Solar Power  

SciTech Connect (OSTI)

Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

Not Available

2008-09-01T23:59:59.000Z

215

Photovoltaic concentrator initiative: Concentrator cell development  

SciTech Connect (OSTI)

This project involves the development of a large-area, low-cost, high-efficiency concentrator solar cell for use in the Entech 22-sun linear-focus Fresnel lens concentrator system. The buried contact solar cell developed at the University of New South Wales was selected for this project. Both Entech and the University of New South Wales are subcontractors. This annual report presents the program efforts from November 1990 through December 1991, including the design of the cell, development of a baseline cell process, and presentation of the results of preliminary cell processing. Important results include a cell designed for operation in a real concentrator system and substitution of mechanical grooving for the previously utilized laser scribing.

Wohlgemuth, J.H.; Narayanan, S. [Solarex Corp., Frederick, MD (US)

1993-05-01T23:59:59.000Z

216

Concentrated Solar Thermoelectric Power  

Broader source: Energy.gov [DOE]

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 2325, 2013 near Phoenix, Arizona.

217

Scattering Solar Thermal Concentrators  

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

is a rendering of a scattering solar concentrator. Light collected by a cylindrical Fresnel lens is focused within a curved glass "guide" sheet, where it is redirected into...

218

Concentrated Solar Power Generation.  

E-Print Network [OSTI]

??Solar power generation is the most promising technology to transfer energy consumption reliance from fossil fuel to renewable sources. Concentrated solar power generation is a (more)

Jin, Zhilei

2013-01-01T23:59:59.000Z

219

Detecting bacteria and Determining Their Susceptibility to Antibiotics by Stochastic Confinement in Nanoliter Droplets using Plug-Based Microfluidics  

SciTech Connect (OSTI)

This article describes plug-based microfluidic technology that enables rapid detection and drug susceptibility screening of bacteria in samples, including complex biological matrices, without pre-incubation. Unlike conventional bacterial culture and detection methods, which rely on incubation of a sample to increase the concentration of bacteria to detectable levels, this method confines individual bacteria into droplets nanoliters in volume. When single cells are confined into plugs of small volume such that the loading is less than one bacterium per plug, the detection time is proportional to plug volume. Confinement increases cell density and allows released molecules to accumulate around the cell, eliminating the pre-incubation step and reducing the time required to detect the bacteria. We refer to this approach as stochastic confinement. Using the microfluidic hybrid method, this technology was used to determine the antibiogram - or chart of antibiotic sensitivity - of methicillin-resistant Staphylococcus aureus (MRSA) to many antibiotics in a single experiment and to measure the minimal inhibitory concentration (MIC) of the drug cefoxitin (CFX) against this strain. In addition, this technology was used to distinguish between sensitive and resistant strains of S. aureus in samples of human blood plasma. High-throughput microfluidic techniques combined with single-cell measurements also enable multiple tests to be performed simultaneously on a single sample containing bacteria. This technology may provide a method of rapid and effective patient-specific treatment of bacterial infections and could be extended to a variety of applications that require multiple functional tests of bacterial samples on reduced timescales.

Boedicker, J.; Li, L; Kline, T; Ismagilov, R

2008-01-01T23:59:59.000Z

220

The interaction of radio frequency electromagnetic fields with atmospheric water droplets and application to aircraft ice prevention  

E-Print Network [OSTI]

In this work the physics of advanced microwave anti-icing systems, which pre-heat impinging supercooled water droplets prior to impact, is studied by means of a computer simulation and is found to be feasible. In order to ...

Hansman, Robert John

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Study on lipid droplet dynamics in live cells and fluidity changes in model bacterial membranes using optical microscopy techniques  

E-Print Network [OSTI]

In this thesis optical microscopy techniques are used to consider aspects of viral and bacterial infections. In part 1, the physical effects of cytomegalovirus on lipid droplet dynamics in live cells are studied; in part ...

Wong, Christine Shiang Yee

2014-06-28T23:59:59.000Z

222

Research on droplet formation for application to kraft black liquors---Final project report  

SciTech Connect (OSTI)

The objective of this project was to generate technical data to guide the design of new nozzles for kraft black liquor recovery boilers. The goal of new nozzle designs would be to narrow the droplet size distribution compared to current nozzles and to adjust for changing black liquor properties and production requirements. Uniform droplets in a recovery boiler should reduce fouling of superheater tubes and caused a more efficient burning of the black liquor, both of which result in improved energy efficiency. The research was organized into five tasks which are described in the next chapter. This fifth and final project report contains the details of Task 4 and 5 and further analysis of Task 1 results. The details of the other tasks are reported in previous technical reports. The major results from the entire project are highlighted in this section in order of significance.

Bousfield, D.W.

1990-01-01T23:59:59.000Z

223

Gallium surface diffusion on GaAs (001) surfaces measured by crystallization dynamics of Ga droplets  

SciTech Connect (OSTI)

We present accurate measurements of Ga cation surface diffusion on GaAs surfaces. The measurement method relies on atomic force microscopy measurement of the morphology of nanodisks that evolve, under group V supply, from nanoscale group III droplets, earlier deposited on the substrate surface. The dependence of the radius of such nano-droplets on crystallization conditions gives direct access to Ga diffusion length. We found an activation energy for Ga on GaAs(001) diffusion E{sub A}=1.310.15 eV, a diffusivity prefactor of D{sub 0}?=?0.53(2.11) cm{sup 2} s{sup ?1} that we compare with the values present in literature. The obtained results permit to better understand the fundamental physics governing the motion of group III adatoms on IIIV crystal surfaces and the fabrication of designable nanostructures.

Bietti, Sergio, E-mail: sergio.bietti@mater.unimib.it; Somaschini, Claudio; Esposito, Luca; Sanguinetti, Stefano [LNESS and Dipartimento di Scienza dei Materiali, Universit di Milano Bicocca, Via Cozzi 55, I20125 Milano (Italy); Fedorov, Alexey [LNESS and CNRIFN, via Anzani 42, I-22100 Como (Italy)

2014-09-21T23:59:59.000Z

224

Droplet traffic in microfluidic networks: A simple model for understanding and designing  

E-Print Network [OSTI]

We propose a simple model to analyze the traffic of droplets in microfluidic ``dual networks''. Such functional networks which consist of two types of channels, namely those accessible or forbidden to droplets, often display a complex behavior characteristic of dynamical systems. By focusing on three recently proposed configurations, we offer an explanation for their remarkable behavior. Additionally, the model allows us to predict the behavior in different parameter regimes. A verification will clarify fundamental issues, such as the network symmetry, the role of the driving conditions, and of the occurrence of reversible behavior. The model lends itself to a fast numerical implementation, thus can help designing devices, identifying parameter windows where the behavior is sufficiently robust for a devices to be practically useful, and exploring new functionalities.

M. Schindler; A. Ajdari

2007-12-20T23:59:59.000Z

225

Spatially resolved temperature and heat flux measurements for slow evaporating droplets heated by a microfabricated heater array  

E-Print Network [OSTI]

flux datum per one droplet. No spatial or temporal heat flux information was given. Klassen et al. [12] and di Marzo et al. [13] were the first to use an infrared thermography technique to attempt to measure the spatially and temporally resolved... infrared thermography. Because of the aforementioned limitation of the IR thermography, measurements were only possible outside of the droplets. Michiyoshi and Makino [15] used a dual beam synchroscope to measure the variation of the heater supply...

Paik, Sokwon

2006-08-16T23:59:59.000Z

226

Concentration in Green Design  

E-Print Network [OSTI]

, energy, infrastructure or transport. Participants in this specialization area work closely with the GreenConcentration in Green Design Research and Education Opportunities Carnegie Mellon University Civil and Environmental Engineering www.ce.cmu.edu M.S. Concentration Green Design - Course Only Track As an extension

Shewchuk, Jonathan

227

Nuclear mass systematics by complementing the Finite Range Droplet Model with neural networks  

E-Print Network [OSTI]

A neural-network model is developed to reproduce the differences between experimental nuclear mass-excess values and the theoretical values given by the Finite Range Droplet Model. The results point to the existence of subtle regularities of nuclear structure not yet contained in the best microscopic/phenomenological models of atomic masses. Combining the FRDM and the neural-network model, we create a hybrid model with improved predictive performance on nuclear-mass systematics and related quantities.

S. Athanassopoulos; E. Mavrommatis; K. A. Gernoth; J. W. Clark

2005-11-30T23:59:59.000Z

228

Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets  

E-Print Network [OSTI]

We used cold helium droplets as nano-scale reactors to form and ionize, by electron bombardment and charge transfer, aromatic amino acid heterodimers of histidine with tryptophan, methyl-tryptophan, and indole. The molecular interaction occurring through an N-H...N hydrogen bond leads to a proton transfer from the indole group of tryptophan to the imidazole group of histidine in a radical cationic environment.

Bellina, Bruno; Kresin, Vitaly V

2015-01-01T23:59:59.000Z

229

Steady-State Homogeneous Nucleation and Growth of Water Droplets: Extended Numerical Treatment  

E-Print Network [OSTI]

The steady-state homogeneous vapor-to-liquid nucleation and the succeeding liquid droplet growth process are studied for water system by means of the coarse-grained molecular dynamics simulations with the mW-model suggested originally in [Molinero, V.; Moore, E. B. \\textit{J. Phys. Chem. B} \\textbf{2009}, \\textit{113}, 4008-4016]. The investigation covers the temperature range $273 \\leq T/K \\leq 363$ and the system's pressure $p\\simeq 1$ atm. The thermodynamic integration scheme and the extended mean first passage time method as a tool to find the nucleation and cluster growth characteristics are applied. The surface tension is numerically estimated and is compared with the experimental data for the considered temperature range. We extract the nucleation characteristics such as the steady-state nucleation rate, the critical cluster size, the nucleation barrier, the Zeldovich factor; perform the comparison with the other simulation results and test the treatment of the simulation results within the classical nucleation theory. We found that the liquid droplet growth is unsteady and follows the power law. At that, the growth laws exhibit the features unified for all the considered temperatures. The geometry of the nucleated droplets is also studied.

Anatolii V. Mokshin; Bulat N. Galimzyanov

2012-10-02T23:59:59.000Z

230

Heat Transfer from Condensate Droplets Falling through an Immiscible Layer of Tributyl Phosphate  

SciTech Connect (OSTI)

As part of a safety analysis of reactions in two-layer mixtures of nitric acid and tributyl phosphate (TBP), an experiment was conducted to study how steam condensate mixes with the TBP layer when steam passes over a TBP-nitric acid mixture. The experiments showed that the condensate does not form a separate layer on top of the TBP but instead percolates as droplets through the TBP layer. The temperature at the top surface of the TBP layer undergoes a step change increase when the initial condensate droplets reach the surface. Temperatures at the surface and within the TBP and aqueous layers subsequently approach a steady state distribution governed by laminar convection and radiation heat transfer from the vapor space above the two-layer mixture. The rate of temperature increase and the steady state temperature gradient are determined by a characteristic propagation velocity and a streamwise dispersion coefficient for heat transfer. The propagation velocity is the geometric mean of the thermal convection velocities for the organic and aqueous phases, and the dispersion coefficient equals 0.494 times the product of the superficial condensate droplet velocity and the diameter of the test vessel. The value of the dispersion coefficient agrees with the Joshi (1980) correlation for liquid phase backmixing in bubble columns. Transient perturbations occur in the TBP layer temperatures. A Fourier analysis shows that the dominant frequency of these perturbations equals the natural frequency given by the transient heat transfer solution.

Laurinat, James E.

2005-08-22T23:59:59.000Z

231

Droplet minimizers for the Gates-Lebowitz-Penrose free energy functional  

E-Print Network [OSTI]

We study the structure of the constrained minimizers of the Gates-Lebowitz-Penrose free-energy functional ${\\mathcal F}_{\\rm GLP}(m)$, non-local functional of a density field $m(x)$, $x\\in {\\mathcal T}_L$, a $d$-dimensional torus of side length $L$. At low temperatures, ${\\mathcal F}_{\\rm GLP}$ is not convex, and has two distinct global minimizers, corresponding to two equilibrium states. Here we constrain the average density $L^{-d}\\int_{{\\cal T}_L}m(x)\\dd x$ to be a fixed value $n$ between the densities in the two equilibrium states, but close to the low density equilibrium value. In this case, a "droplet" of the high density phase may or may not form in a background of the low density phase, depending on the values $n$ and $L$. We determine the critical density for droplet formation, and the nature of the droplet, as a function of $n$ and $L$. The relation between the free energy and the large deviations functional for a particle model with long-range Kac potentials, proven in some cases, and expected to be true in general, then provides information on the structure of typical microscopic configurations of the Gibbs measure when the range of the Kac potential is large enough.

E. A. Carlen; M. C. Carvalho; R. Esposito; J. L. Lebowitz; R. Marra

2009-05-21T23:59:59.000Z

232

Effects of droplet fluctuations on the scattering of neutrons and light by microemulsions  

E-Print Network [OSTI]

Beginning from the first neutron spin-echo study of the shape fluctuations of microemulsion droplets [J.S. Huang, S.T. Milner, B. Farago, and D. Richter, Phys. Rev. Lett. 59, 2600 (1987)] these experiments are incorrectly interpreted in the literature. This is due to an inappropriate account for the fluctuations and the erroneous application of the original theory to the experiments (see [V. Lisy and B. Brutovsky, Czech. J. Phys. 50, 239 (2000)]). In the presented work both these shortcomings are corrected. We develop the theory of static and dynamic light and neutron scattering from droplet microemulsions. The fluids inside and out of the droplets are separated by a surfactant layer of arbitrary thickness. The scattering functions consistently take into account thermal fluctuations of the shapes of such double-layered spheres to the second order in the changes of their radius. The relaxation times and correlation functions of the fluctuations are found within the Helfrich's theory of interfacial elasticity. The theory is applied to the quantitative description of small-angle neutron scattering, neutron spin-echo spectroscopy and dynamic light scattering experiments. Basic characteristics of the microemulsions, extracted from the fits to the experimental data, significantly differ from those determined in the original works. We include into the consideration the viscosity of the surface layer and give its estimation for the octane-C10E5- water microemulsion.

V. Lisy; B. Brutovsky

2000-10-26T23:59:59.000Z

233

On droplet combustion of biodiesel fuel mixed with diesel/alkanes in microgravity condition  

SciTech Connect (OSTI)

The burning characteristics of a biodiesel droplet mixed with diesel or alkanes such as dodecane and hexadecane were experimentally studied in a reduced-gravity environment so as to create a spherically symmetrical flame without the influence of natural convection due to buoyancy. Small droplets on the order of 500 {mu}m in diameter were initially injected via a piezoelectric technique onto the cross point intersected by two thin carbon fibers; these were prepared inside a combustion chamber that was housed in a drag shield, which was freely dropped onto a foam cushion. It was found that, for single component droplets, the tendency to form a rigid soot shell was relatively small for biodiesel fuel as compared to that exhibited by the other tested fuels. The soot created drifted away readily, showing a puffing phenomenon; this could be related to the distinct molecular structure of biodiesel leading to unique soot layers that were more vulnerable to oxidative reactivity as compared to the soot generated by diesel or alkanes. The addition of biodiesel to these more traditional fuels also presented better performance with respect to annihilating the soot shell, particularly for diesel. The burning rate generally follows that of multi-component fuels, by some means in terms of a lever rule, whereas the mixture of biodiesel and dodecane exhibits a somewhat nonlinear relation with the added fraction of dodecane. This might be related to the formation of a soot shell. (author)

Pan, Kuo-Long; Li, Je-Wei; Chen, Chien-Pei; Wang, Ching-Hua [Department of Mechanical Engineering, National Taiwan University, Taipei 10617 (China)

2009-10-15T23:59:59.000Z

234

Concentrating photovoltaic solar panel  

DOE Patents [OSTI]

The present invention relates to photovoltaic power systems, photovoltaic concentrator modules, and related methods. In particular, the present invention features concentrator modules having interior points of attachment for an articulating mechanism and/or an articulating mechanism that has a unique arrangement of chassis members so as to isolate bending, etc. from being transferred among the chassis members. The present invention also features adjustable solar panel mounting features and/or mounting features with two or more degrees of freedom. The present invention also features a mechanical fastener for secondary optics in a concentrator module.

Cashion, Steven A; Bowser, Michael R; Farrelly, Mark B; Hines, Braden E; Holmes, Howard C; Johnson, Jr., Richard L; Russell, Richard J; Turk, Michael F

2014-04-15T23:59:59.000Z

235

Scattering Solar Thermal Concentrators  

Broader source: Energy.gov [DOE]

"This fact sheet describes a scattering solar thermal concentrators project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by the Pennsylvania State University, is working to demonstrate a new, scattering-based approach to concentrating sunlight that aims to improve the overall performance and reliability of the collector field. The research team aims to show that scattering solar thermal collectors are capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but with the added benefits of immunity to wind-load tracking error, more efficient land use, and utilization of stationary receivers."

236

Hyper Space Complex Number  

E-Print Network [OSTI]

A new kind of numbers called Hyper Space Complex Numbers and its algebras are defined and proved. It is with good properties as the classic Complex Numbers, such as expressed in coordinates, triangular and exponent forms and following the associative and commutative laws of addition and multiplication. So the classic Complex Number is developed from in complex plane with two dimensions to in complex space with N dimensions and the number system is enlarged also.

Shanguang Tan

2007-04-23T23:59:59.000Z

237

Organic photovoltaics and concentrators  

E-Print Network [OSTI]

The separation of light harvesting and charge generation offers several advantages in the design of organic photovoltaics and organic solar concentrators for the ultimate end goal of achieving a lower cost solar electric ...

Mapel, Jonathan King

2008-01-01T23:59:59.000Z

238

Water Sample Concentrator  

ScienceCinema (OSTI)

Automated portable device that concentrates and packages a sample of suspected contaminated water for safe, efficient transport to a qualified analytical laboratory. This technology will help safeguard against pathogen contamination or chemical and biolog

Idaho National Laboratory

2010-01-08T23:59:59.000Z

239

Concentrator silicon cell research  

SciTech Connect (OSTI)

This project continued the developments of high-efficiency silicon concentrator solar cells with the goal of achieving a cell efficiency in the 26 to 27 percent range at a concentration level of 150 suns of greater. The target efficiency was achieved with the new PERL (passivated emitter, rear locally diffused) cell structure, but only at low concentration levels around 20 suns. The PERL structure combines oxide passivation of both top and rear surfaces of the cells with small area contact to heavily doped regions on the top and rear surfaces. Efficiency in the 22 to 23 percent range was also demonstrated for large-area concentrator cells fabricated with the buried contact solar cell processing sequence, either when combined with prismatic covers or with other innovative approaches to reduce top contact shadowing. 19 refs.

Green, M.A.; Wenham, S.R.; Zhang, F.; Zhao, J.; Wang, A. [New South Wales Univ., Kensington (Australia). Solar Photovoltaic Lab.

1992-04-01T23:59:59.000Z

240

Joined concentric tubes  

DOE Patents [OSTI]

Tubular objects having two or more concentric layers that have different properties are joined to one another during their manufacture primarily by compressive and friction forces generated by shrinkage during sintering and possibly mechanical interlocking. It is not necessary for the concentric tubes to display adhesive-, chemical- or sinter-bonding to each other in order to achieve a strong bond. This facilitates joining of dissimilar materials, such as ceramics and metals.

DeJonghe, Lutgard; Jacobson, Craig; Tucker, Michael; Visco, Steven

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Elements of number theory  

E-Print Network [OSTI]

The dissertation argues for the necessity of a morphosemantic theory of number, that is, a theory of number serviceable both to semantics and morphology. The basis for this position, and the empirical core of the dissertation, ...

Harbour, Daniel, 1975-

2003-01-01T23:59:59.000Z

242

Photovoltaic solar concentrator  

DOE Patents [OSTI]

A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

Nielson, Gregory N.; Okandan, Murat; Resnick, Paul J.; Cruz-Campa, Jose Luis

2012-12-11T23:59:59.000Z

243

Simulations of the effect of final state interactions on the scattering reponses of helium droplets  

E-Print Network [OSTI]

and Koonin. They show that FSI broadens the peak in Frx and produces results more in agreement with experimental data. For a Helium droplet, our computation indicates that F with FSI is also broader than FrA. From the similarity between bulk Helium... with and without considering FSI, namely, F and Fix, for bulk Helium. In their computation, they first used monte Carlo method (MC) to calculate FrA(rs pi) and F, pi's modified form corresponding to FSI. Then they transformed pi and F into Fix and E...

Yang, Jian

1996-01-01T23:59:59.000Z

244

Impact of picolitre droplets on superhydrophobic surfaces with ultra-low spreading ratios  

E-Print Network [OSTI]

for over a century.1 Important technological applications include: rapid cooling,2,3,4 delayed freezing,5,6,7,8 crop spraying,9 and inkjet printing. In recent years, work has been carried out to assess the feasibility of inkjet printing technology... on the surface, which is determined by a balance between the inertia of the drop (governed by its diameter, velocity, viscosity, and density) and surface tension forces. The third phase entails the dissipation of the droplet inertia, as seen by oscillations...

Brown, P.S.; Berson, A.; Talbot, E.L.; Wood, T.J.; Schofield, W.C.E.; Bain, C.D.; Badyal, J.P.S.

2011-01-01T23:59:59.000Z

245

High flow rate nozzle system with production of uniform size droplets  

DOE Patents [OSTI]

Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity.

Stockel, Ivar H. (Bangor, ME)

1990-01-01T23:59:59.000Z

246

High flow rate nozzle system with production of uniform size droplets  

DOE Patents [OSTI]

Method steps for production of substantially uniform size droplets from a flow of liquid include forming the flow of liquid, periodically modulating the momentum of the flow of liquid in the flow direction at controlled frequency, generating a cross flow direction component of momentum and modulation of the cross flow momentum of liquid at substantially the same frequency and phase as the modulation of flow direction momentum, and spraying the so formed modulated flow through a first nozzle outlet to form a desired spray configuration. A second modulated flow through a second nozzle outlet is formed according to the same steps, and the first and second modulated flows impinge upon each other generating a liquid sheet. Nozzle apparatus for modulating each flow includes rotating valving plates interposed in the annular flow of liquid. The plates are formed with radial slots. Rotation of the rotating plates is separably controlled at differential angular velocities for a selected modulating frequency to achieve the target droplet size and production rate for a given flow. The counter rotating plates are spaced to achieve a desired amplitude of modulation in the flow direction, and the angular velocity of the downstream rotating plate is controlled to achieve the desired amplitude of modulation of momentum in the cross flow direction. Amplitude of modulation is set according to liquid viscosity. 5 figs.

Stockel, I.H.

1990-10-16T23:59:59.000Z

247

Dilution-Free Analysis from Picoliter Droplets by Nano-Electrospray Ionization Mass Spectrometry  

SciTech Connect (OSTI)

The expanding role of microfluidics for chemical and biochemical analysis is due to factors including the favorable scaling of separation performance with reduced channel dimensions,[1] flexibility afforded by computer-aided device design, and the ability to integrate multiple sample handling and analysis steps into a single platform.[2] Such devices enable smaller liquid volumes and sample sizes to be handled than can be achieved on the benchtop, where sub-microliter volumes are difficult to work with and where sample losses to the surfaces of multiple reaction vessels become prohibitive. A particularly attractive microfluidic platform for sample-limited analyses employs aqueous droplets or plugs encapsulated by an immiscible oil.[3,4] Each droplet serves as a discrete compartment or reaction chamber enabling, e.g., high throughput screening[5,6] and kinetic studies[7-9] of femto- to nanoliter samples, as well as the encapsulation[10-12] and lysis[10] of individual cells with limited dilution of the cellular contents

Kelly, Ryan T.; Page, Jason S.; Marginean, Ioan; Tang, Keqi; Smith, Richard D.

2009-09-01T23:59:59.000Z

248

Experimental investigation of the impact, spreading, and drying of picolitre droplets onto substrates with a broad range of wettabilities  

E-Print Network [OSTI]

- erated using a Microfab nozzle (Horizon Instruments) with a piezoelectric driver. The diameter of the nozzle orifice is 53m. Side-view images of drying droplets are taken using a high-speed camera (Photron APX RS) coupled to a long working distance... as tracers to follow the flow inside the drying droplets. Images are exported into Matlab and the location of tracer particles is de- tected to a sub-pixel accuracy. The displacement of the particles between images is calculated using a particle...

Berson, A

2011-10-02T23:59:59.000Z

249

Cell detachment and label-free cell sorting using modulated surface acoustic waves (SAW) in droplet-based microfluidics  

E-Print Network [OSTI]

We present a droplet-based surface acoustic wave (SAW) system designed to viably detach biological cells from a surface and sort cell types based on differences in adhesion strength (adhesion contrast), without the need to label cells with molecular markers. The system uses modulated SAW to generate pulsatile flows in the droplets and efficiently detach the cells, thereby minimizing SAW excitation power and exposure time. As a proof-of-principle, the system is shown to efficiently sort HEK 293 from A7r5 cells based on adhesion contrast. Results are obtained in minutes with sorting purity and efficiency reaching 97 % and 95 %, respectively.

Bussonnire, Adrien; Baudoin, Michael; Bou-Matar, Olivier; Grandbois, Michel; Charette, Paul; Renaudin, Alan

2014-01-01T23:59:59.000Z

250

Definitions Numbered Space  

E-Print Network [OSTI]

Definitions · Numbered Space ­ a single space marked with a number and reserved for a single permit 24/7 · Unnumbered Space ­ a space which can be used by any customer allowed to park in that lot. High Low Average Question 4: If I buy a staff permit for an UNNUMBERED* space in a non-gated surface

Behmer, Spencer T.

251

CONTENTS Concentrated Gas Hydrate  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New Substation Sites Proposed Route BTRICGEGR-N Goods PO 1 of 81,Concentrated Gas

252

Optical oxygen concentration monitor  

DOE Patents [OSTI]

A system for measuring and monitoring the concentration of oxygen uses as a light source an argon discharge lamp, which inherently emits light with a spectral line that is close to one of oxygen's A-band absorption lines. In a preferred embodiment, the argon line is split into sets of components of shorter and longer wavelengths by a magnetic field of approximately 2000 Gauss that is parallel to the light propagation from the lamp. The longer wavelength components are centered on an absorption line of oxygen and thus readily absorbed, and the shorter wavelength components are moved away from that line and minimally absorbed. A polarization modulator alternately selects the set of the longer wavelength, or upshifted, components or the set of the shorter wavelength, or downshifted, components and passes the selected set to an environment of interest. After transmission over a path through that environment, the transmitted optical flux of the argon line varies as a result of the differential absorption. The system then determines the concentration of oxygen in the environment based on the changes in the transmitted optical flux between the two sets of components. In alternative embodiments modulation is achieved by selectively reversing the polarity of the magnetic field or by selectively supplying the magnetic field to either the emitting plasma of the lamp or the environment of interest.

Kebabian, Paul (Acton, MA)

1997-01-01T23:59:59.000Z

253

DOE/ID-Number  

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

performance and PSC in NPPs and the latest information on mobile devices and software technology in order to explore a number of usage scenarios. In their research, the team...

254

Numerical simulation of bubble and droplet deformation by a level set approach with surface tension in three dimensions  

E-Print Network [OSTI]

Numerical simulation of bubble and droplet deformation by a level set approach with surface tension-dimensional Navier­Stokes solver for incompressible two-phase flow problems with surface tension and apply is the impact of surface tension and its discretization on the overall convergence behavior and conservation

Sminchisescu, Cristian

255

Effect of Channel Materials on the Behavior of Water Droplet Emerging From GDL into PEMFC Gas Channels  

E-Print Network [OSTI]

hand, lack of water in the cell leads to membrane dehydration and reduction of proton exchange throughEffect of Channel Materials on the Behavior of Water Droplet Emerging From GDL into PEMFC Gas, Rochester, New York 14623, USA Water accumulation in the gas channels of proton exchange membrane fuel cells

Kandlikar, Satish

256

Control of Initiation, Rate, and Routing of Spontaneous Capillary-Driven Flow of Liquid Droplets through Microfluidic Channels on  

E-Print Network [OSTI]

angle hysteresis, the presence or absence of a lubricating oil layer, and adsorption of surface between the plates of the SlipChip ("dead-end flow"). Rupture of the lubricating oil layer (reminiscent containing an aqueous droplet into contact with a slightly deeper channel filled with immiscible oil

Ismagilov, Rustem F.

257

Reprint from RSC Advances, 4, 14962 (2014) Formation and dynamics of partially wetting droplets in square microchannels  

E-Print Network [OSTI]

are generated by focusing water in a continuous phase of silicone oil using square microchannels. The shape and stability of the lubricating film between droplets and channel walls permit the classification of typical water hydrology,1-3 oil recovery,4-8 water-oil filtration,9-11 and fuel cells.12 Examples of basic flow

Cubaud, Thomas

258

Droplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H. Callahan, and Akos Vertes*,  

E-Print Network [OSTI]

conductivity, dielectric constant, surface tension, viscosity, and density) and on the spraying conditionsDroplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H generated from methanol-water mixtures. We investigated spraying conditions close to those of electrospray

Vertes, Akos

259

Influence of Droplet Geometry on the Coalescence of Low Viscosity Drops A. Eddi, K. G. Winkels, and J. H. Snoeijer  

E-Print Network [OSTI]

Influence of Droplet Geometry on the Coalescence of Low Viscosity Drops A. Eddi, K. G. Winkels involving sprays and print- ing [4,5]. Breakup and coalescence are singular events during which the liquid-off is universal in the sense that it is completely independent of initial conditions. In this regime, viscosity

Snoeijer, Jacco

260

Miscible droplets in a porous medium and the effects of Korteweg Ching-Yao Chen and Lilin Wang  

E-Print Network [OSTI]

the growth of the viscous fingering instability, while simultaneously generating larger stabilizing Korteweg as technological situa- tions ranging from groundwater contamination and enhanced oil recovery to biomedicalARTICLES Miscible droplets in a porous medium and the effects of Korteweg stresses Ching-Yao Chen

Meiburg, Eckart H.

Note: This page contains sample records for the topic "droplet number concentration" 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

Charge tuning in [111] grown GaAs droplet quantum dots  

SciTech Connect (OSTI)

We demonstrate charge tuning in strain free GaAs/AlGaAs quantum dots (QDs) grown by droplet epitaxy on a GaAs(111)A substrate. Application of a bias voltage allows the controlled charging of the QDs from ?3|e| to +2|e|. The resulting changes in QD emission energy and exciton fine-structure are recorded in micro-photoluminescence experiments at T?=?4?K. We uncover the existence of excited valence and conduction states, in addition to the s-shell-like ground state. We record a second series of emission lines about 25?meV above the charged exciton emission coming from excited charged excitons. For these excited interband transitions, a negative diamagnetic shift of large amplitude is uncovered in longitudinal magnetic fields.

Bouet, L.; Vidal, M.; Marie, X.; Amand, T.; Wang, G.; Urbaszek, B. [INSA-CNRS-UPS, LPCNO, Universit de Toulouse, 135 Ave. Rangueil, 31077 Toulouse (France); Mano, T.; Ha, N.; Kuroda, T.; Sakoda, K. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan); Durnev, M. V.; Glazov, M. M.; Ivchenko, E. L. [Ioffe Physical-Technical Institute RAS, 194021 St.-Petersburg (Russian Federation)

2014-08-25T23:59:59.000Z

262

Report number codes  

SciTech Connect (OSTI)

This publication lists all report number codes processed by the Office of Scientific and Technical Information. The report codes are substantially based on the American National Standards Institute, Standard Technical Report Number (STRN)-Format and Creation Z39.23-1983. The Standard Technical Report Number (STRN) provides one of the primary methods of identifying a specific technical report. The STRN consists of two parts: The report code and the sequential number. The report code identifies the issuing organization, a specific program, or a type of document. The sequential number, which is assigned in sequence by each report issuing entity, is not included in this publication. Part I of this compilation is alphabetized by report codes followed by issuing installations. Part II lists the issuing organization followed by the assigned report code(s). In both Parts I and II, the names of issuing organizations appear for the most part in the form used at the time the reports were issued. However, for some of the more prolific installations which have had name changes, all entries have been merged under the current name.

Nelson, R.N. (ed.)

1985-05-01T23:59:59.000Z

263

Shape-Adaptive Ultra-Lightweight Solar Concentrators  

E-Print Network [OSTI]

-Lightweight Solar Concentrators Global Significance Solar energy offers a number of benefits such as reducing sources, etc. Despite these benefits, solar energy currently supplies only a small fraction of global energy needs, mainly because its costs are much higher than conventional energy sources. Concentrating

264

Concentric tube support assembly  

SciTech Connect (OSTI)

An assembly (45) includes a plurality of separate pie-shaped segments (72) forming a disk (70) around a central region (48) for retaining a plurality of tubes (46) in a concentrically spaced apart configuration. Each segment includes a support member (94) radially extending along an upstream face (96) of the segment and a plurality of annularly curved support arms (98) transversely attached to the support member and radially spaced apart from one another away from the central region for receiving respective upstream end portions of the tubes in arc-shaped spaces (100) between the arms. Each segment also includes a radial passageway (102) formed in the support member for receiving a fluid segment portion (106) and a plurality of annular passageways (104) formed in the support arms for receiving respective arm portions (108) of the fluid segment portion from the radial passageway and for conducting the respective arm portions into corresponding annular spaces (47) formed between the tubes retained by the disk.

Rubio, Mark F.; Glessner, John C.

2012-09-04T23:59:59.000Z

265

CHEMICAL SAFETY Emergency Numbers  

E-Print Network [OSTI]

- 1 - CHEMICAL SAFETY MANUAL 2010 #12;- 2 - Emergency Numbers UNBC Prince George Campus Security Prince George Campus Chemstores 6472 Chemical Safety 6472 Radiation Safety 5530 Biological Safety 5530 use, storage, handling, waste and emergency management of chemicals on the University of Northern

Bolch, Tobias

266

A number of organizations,  

E-Print Network [OSTI]

installed solar electric systems on a number of the city's buildings, including the Chicago Center for Green Technology shown here. CityofChicago Aggregated Purchasing--A Clean Energy Strategy SOLAR TODAY Aggregated Purchasing--A Clean Energy Strategy by Lori A. Bird and Edward A. Holt #12;November/December 2002 35 Power

267

ENGINEERING DEPARTMENTS, DEGREES AND CONCENTRATIONS  

E-Print Network [OSTI]

ENGINEERING, CHEMISTRY AND SCIENCE (TECS) Biological Engineering (BE) Biomedical Engineering (BME) ChemicalENGINEERING DEPARTMENTS, DEGREES AND CONCENTRATIONS DEPARTMENT DEGREE CONCENTRATION (optional) BIOLOGICAL AND AGRICULTURAL ENGINEERING (BAE) BIOMEDICAL ENGINEERING (BME) CHEMICAL AND BIOMOLECULAR

268

Project Approval Form Concentration in  

E-Print Network [OSTI]

Project Approval Form Concentration in Nanotechnology Return completed form to ENG Undergraduate of Graduation:____________________________ Instructions: Please check one of the following ways in which you Plan to complete the project as a requirement for the concentration in Nanotechnology. Depending upon

Goldberg, Bennett

269

ACCOUNTS PAYABLE VENDOR NUMBER GUIDE  

E-Print Network [OSTI]

ACCOUNTS PAYABLE VENDOR NUMBER GUIDE FOR DEPARTMENTS W-9 AND W-8BEN FORMS TAXPAYER ID NUMBER (TIN), FEDERAL EMPLOYER ID NUMBER (FEIN), AND EMPLOYER'S ID NUMBER (EIN) HOW TO FIND A VENDOR'S ID NUMBER IN BANNER HOW TO DETERMINE IF A VENDOR IS IN BANNER UPDATED MAY 2013 #12;Vendor Number Guide

270

SEDIMENT CONCENTRATION BELOW FREE OVERFALL  

E-Print Network [OSTI]

SEDIMENT CONCENTRATION BELOW FREE OVERFALL By O. R. Stein,~Associate Member, ASCE, and P. Y. Julien and sediment concentration, which may affect downstream morphology and water quality as well as the structure is to determine relationships between time, scour depth, scour-hole volume, and sediment concentration generated

Julien, Pierre Y.

271

High Aitken Nucleus Concentrations Above Cloud Tops in the Arctic Timothy J. Garrett*  

E-Print Network [OSTI]

cavity by passing the air flow through a cyclone separator. The separator removes droplets larger than 5

272

Modeled atmospheric radon concentrations from uranium mines  

SciTech Connect (OSTI)

Uranium mining and milling operations result in the release of radon from numerous sources of various types and strengths. The US Environmental Protection Agency (EPA) under the Clean Air Act, is assessing the health impact of air emissions of radon from underground uranium mines. In this case, the radon emissions may impact workers and residents in the mine vicinity. To aid in this assessment, the EPA needs to know how mine releases can affect the radon concentrations at populated locations. To obtain this type of information, Pacific Northwest Laboratory used the radon emissions, release characteristics and local meterological conditions for a number of mines to model incremental radon concentrations. Long-term, average, incremental radon concentrations were computed based on the best available information on release rates, plume rise parameters, number and locations of vents, and local dispersion climatology. Calculations are made for a model mine, individual mines, and multiple mines. Our approach was to start with a general case and then consider specific cases for comparison. A model underground uranium mine was used to provide definition of the order of magnitude of typical impacts. Then computations were made for specific mines using the best mine-specific information available for each mine. These case study results are expressed as predicted incremental radon concentration contours plotted on maps with local population data from a previous study. Finally, the effect of possible overlap of radon releases from nearby mines was studied by calculating cumulative radon concentrations for multiple mines in a region with many mines. The dispersion model, modeling assumptions, data sources, computational procedures, and results are documented in this report. 7 refs., 27 figs., 18 tabs.

Droppo, J.G.

1985-04-01T23:59:59.000Z

273

Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas Experiment III (SAGE III)  

E-Print Network [OSTI]

Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas extinction. We retrieve ozone and nitrogen dioxide number densities and aerosol extinction from transmission), Retrieval of ozone and nitrogen dioxide concentrations from Stratospheric Aerosol and Gas Experiment III

274

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

E-Print Network [OSTI]

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

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

2014-01-01T23:59:59.000Z

275

Climate Zone Number 5 | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanicPower Address: 13615Boulder27. Logo: TheNumber

276

NAME: STUDENT NUMBER (PID): CITY, STATE ZIP: DAYTIME PHONE NUMBER  

E-Print Network [OSTI]

NAME: STUDENT NUMBER (PID): ADDRESS: CITY, STATE ZIP: DAYTIME PHONE NUMBER: CELL PHONE NUMBER of financial institution. 14 Cell Phone Expenses 15 Other ordinary and necessary living expenses. 16 TOTAL (add

277

Number | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico:CommunityNorthwest Basin andNsbowde's blog HomeNumber"

278

Steady-State Homogeneous Nucleation and Growth of Water Droplets: Extended Numerical Treatment  

E-Print Network [OSTI]

The steady-state homogeneous vapor-to-liquid nucleation and the succeeding liquid droplet growth process are studied for water system by means of the coarse-grained molecular dynamics simulations with the mW-model suggested originally in [Molinero, V.; Moore, E. B. \\textit{J. Phys. Chem. B} \\textbf{2009}, \\textit{113}, 4008-4016]. The investigation covers the temperature range $273 \\leq T/K \\leq 363$ and the system's pressure $p\\simeq 1$ atm. The thermodynamic integration scheme and the extended mean first passage time method as a tool to find the nucleation and cluster growth characteristics are applied. The surface tension is numerically estimated and is compared with the experimental data for the considered temperature range. We extract the nucleation characteristics such as the steady-state nucleation rate, the critical cluster size, the nucleation barrier, the Zeldovich factor; perform the comparison with the other simulation results and test the treatment of the simulation results within the classical n...

Mokshin, Anatolii V; 10.1021/jp304830e

2012-01-01T23:59:59.000Z

279

High-efficiency silicon concentrator cell commercialization  

SciTech Connect (OSTI)

This report summarizes the first phase of a forty-one month program to develop a commercial, high-efficiency concentrator solar cell and facility for manufacturing it. The period covered is November 1, 1990 to December 31, 1991. This is a joint program between the Electric Power Research Institute (EPRI) and Sandia National Laboratories. (This report is also published by EPRI as EPRI report number TR-102035.) During the first year of the program, SunPower accomplished the following major objectives: (1) a new solar cell fabrication facility, which is called the Cell Pilot Line (CPL), (2) a baseline concentrator cell process has been developed, and (3) a cell testing facility has been completed. Initial cell efficiencies are about 23% for the baseline process. The long-range goal is to improve this efficiency to 27%.

Sinton, R.A.; Swanson, R.M. [SunPower Corp., Sunnyvale, CA (US)

1993-05-01T23:59:59.000Z

280

PARKS, RECREATION & TOURISM Concentration in  

E-Print Network [OSTI]

PARKS, RECREATION & TOURISM Concentration in Conservation Law Enforcement School Experience in Parks, Recreation, and Tourism 1 Semester 5 Semester 6 SFR 434/534 - Recreation Site Planning

Thomas, Andrew

Note: This page contains sample records for the topic "droplet number concentration" 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

Concentrated solar power on demand .  

E-Print Network [OSTI]

??This thesis describes a new concentrating solar power central receiver system with integral thermal storage. Hillside mounted heliostats direct sunlight into a volumetric absorption molten (more)

Codd, Daniel Shawn

2011-01-01T23:59:59.000Z

282

FY 2010 Second Quarter Report Evaluation of the Liu-Daum-McGraw (LDM) Drizzle Threshold Parameterization using Measurements from the VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign  

SciTech Connect (OSTI)

Metric for Quarter 2: Evaluate LDM (Liu, Daum, McGraw) drizzle threshold parameterization for a range of cloud conditions by comparing the threshold function computed using measurements of cloud droplet number concentration and cloud liquid water content to measurements of drizzle droplet number concentrations and/or drizzle water content.

McGraw, R; Kleinman, LI; Springston, SR; Daum, PH; Senum, G; Wang, J

2011-04-04T23:59:59.000Z

283

Grant Application Package CFDA Number  

E-Print Network [OSTI]

Grant Application Package CFDA Number: Opportunity Title: Offering Agency: Agency Contact: Opportunity Open Date: Opportunity Close Date: CFDA Description: Opportunity Number: Competition ID

Talley, Lynne D.

284

Process for concentrated biomass saccharification  

DOE Patents [OSTI]

Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.

Hennessey, Susan M. (Avondale, PA); Seapan, Mayis (Landenberg, PA); Elander, Richard T. (Evergreen, CO); Tucker, Melvin P. (Lakewood, CO)

2010-10-05T23:59:59.000Z

285

Declaration of Concentration in Nanotechnology  

E-Print Network [OSTI]

Declaration of Concentration in Nanotechnology Return completed form to ENG Undergraduate Records:____________________________ Instructions: ENG students declaring a Concentration in Nanotechnology should complete this form, obtain REQUIRED COURSES (Choose 1) 1. ENG EC 481­ Fundamentals of Nanomaterials and Nanotechnology 4.0 ELECTIVES

Goldberg, Bennett

286
287

Biomedical Ethics and Medical Humanities Scholarly Concentration Concentrator's Update Report  

E-Print Network [OSTI]

: Email: Today's Date: Year of Matriculation: Planned Year of Graduation: Planned concurrent degrees with MD and institution/dept: Current post-graduation plans: I am doing the (underline one) Original, number of units each BEMH project Funded by Med Scholar's Grant? Y / N If Y, number of quarter

Ford, James

288

The concrete theory of numbers: initial numbers and wonderful properties of numbers repunit  

E-Print Network [OSTI]

In this work initial numbers and repunit numbers have been studied. All numbers have been considered in a decimal notation. The problem of simplicity of initial numbers has been studied. Interesting properties of numbers repunit are proved: $gcd(R_a, R_b) = R_{gcd(a,b)}$; $R_{ab}/(R_aR_b)$ is an integer only if $gcd(a,b) = 1$, where $a\\geq1$, $b\\geq1$ are integers. Dividers of numbers repunit, are researched by a degree of prime number.

Boris V. Tarasov

2007-04-07T23:59:59.000Z

289

Concentrated Thermoelectric Power | Department of Energy  

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

Concentrated Thermoelectric Power This fact sheet describes a concentrated solar hydroelectric power project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D...

290

Development of a prototype lignin concentration sensor  

SciTech Connect (OSTI)

The US Department of Energy, Office of Industrial Technologies, is sponsoring a research and development program for the development of a real-time, in-situ sensor to measure the concentration of lignin in wood pulp. The program is composed of phase I showing feasibility which is now complete, phase II for development and testing of a Field Prototype, in progress, Phase III commercialization. Phase I work (funded entirely by B W) demonstrated a correlation between the fluorescence intensity and lignin concentration (as measured by TAPPI procedure, T 236 hm-85 Kappa Number of Pulp) for undiluted wood pulp samples. In Phase II, a laboratory test program directed at characterizing the fluorescence of wood pulp has been conducted as a prelude to the design of a prototype sensor. The current report summarizes the testing completed in Phase I and documents the Phase II laboratory testing completed through December 1991. Future Phase II efforts include additional laboratory testing, design and fabrication of a prototype sensor, and field testing of the prototype sensor. Phase III of the program will concentrate on the incorporation of the sensor into a control system and commercialization of the sensor.

Malito, M.L.; Jeffers, L.A.

1993-01-01T23:59:59.000Z

291

Development of a prototype lignin concentration sensor  

SciTech Connect (OSTI)

The US Department of Energy, Office of Industrial Technologies, is sponsoring a research and development program for the development of a real-time, in-situ sensor to measure the concentration of lignin in wood pulp. The program is composed of phase I showing feasibility which is now complete, phase II for development and testing of a Field Prototype, in progress, Phase III commercialization. Phase I work (funded entirely by B&W) demonstrated a correlation between the fluorescence intensity and lignin concentration (as measured by TAPPI procedure, T 236 hm-85 Kappa Number of Pulp) for undiluted wood pulp samples. In Phase II, a laboratory test program directed at characterizing the fluorescence of wood pulp has been conducted as a prelude to the design of a prototype sensor. The current report summarizes the testing completed in Phase I and documents the Phase II laboratory testing completed through December 1991. Future Phase II efforts include additional laboratory testing, design and fabrication of a prototype sensor, and field testing of the prototype sensor. Phase III of the program will concentrate on the incorporation of the sensor into a control system and commercialization of the sensor.

Malito, M.L.; Jeffers, L.A.

1993-01-01T23:59:59.000Z

292

Design of inflatable solar concentrator  

E-Print Network [OSTI]

Solar concentrators improve the performance of solar collection systems by increasing the amount of usable energy available for a given collector size. Unfortunately, they are not known for their light weight and portability, ...

Carrasquillo, Omar (Omar Y. Carrasquillo De Armas)

2013-01-01T23:59:59.000Z

293

Optimal concentrations in nectar feeding  

E-Print Network [OSTI]

Nectar drinkers must feed quickly and efficiently due to the threat of predation. While the sweetest nectar offers the greatest energetic rewards, the sharp increase of viscosity with sugar concentration makes it the most ...

Kim, Wonjung

294

Concentrated solar power on demand  

E-Print Network [OSTI]

This thesis describes a new concentrating solar power central receiver system with integral thermal storage. Hillside mounted heliostats direct sunlight into a volumetric absorption molten salt pool, which also functions ...

Codd, Daniel Shawn

2011-01-01T23:59:59.000Z

295

The influence of droplet size upon the effectiveness of herbicidal application of 2, 4-D in beans  

E-Print Network [OSTI]

and suggestions which did much to bring about its completion. To Dr, Robert A. Darrow, chairman of my comuaittee, I wish to express sincere gratitude for his helpful guidance and advice during the development of this s tudy ~ My thanks go to Mr. C ~ B, 9odbey... at application rates of four gallons per acre, Mesquite seed- lings were used as the test plants' In three tests involving the amines and eaters of 2J/J5 T in both oil and water carriers, it was found that droplet sizes of 200, $00, 600 and 800 microns...

Dayhoff, Eldred Eugene

1956-01-01T23:59:59.000Z

296

Property:PhoneNumber | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar PowerstoriesNrelPartnerType Jump to: navigation, searchRelatedTo JumpPhoneNumber

297

Climate Zone Number 2 | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanicPower Address: 13615Boulder27. Logo: TheNumber 2

298

Climate Zone Number 3 | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanicPower Address: 13615Boulder27. Logo: TheNumber 23

299

he concentration of large numbers of livestock and poultry confinement facilities, which  

E-Print Network [OSTI]

national legisla- tion to deal with air pollution was the Air Pollution Control Act of 1955, which Ambient Air Quality Standards Air pollution is categorized as a health concern for humans, animals or plants when, for example, an amount of pollutants in the air is con- sidered to be harmful. It can also

Mukhtar, Saqib

300

Data Compression with Prime Numbers  

E-Print Network [OSTI]

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

Gordon Chalmers

2005-11-16T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Funding Opportunity Announcement: Concentrating Solar Power:...  

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

Funding Opportunity Announcement: Concentrating Solar Power: Advanced Projects Offering Low LCOE Opportunities Funding Opportunity Announcement: Concentrating Solar Power: Advanced...

302

Energy 101: Concentrating Solar Power  

ScienceCinema (OSTI)

From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power for about 90,000 homes. This video explains what CSP is, how it works, and how systems like parabolic troughs produce renewable power. For more information on the Office of Energy Efficiency and Renewable Energy's CSP research, see the Solar Energy Technology Program's Concentrating Solar Power Web page at http://www1.eere.energy.gov/solar/csp_program.html.

None

2013-05-29T23:59:59.000Z

303

Energy 101: Concentrating Solar Power  

SciTech Connect (OSTI)

From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies reflect and collect solar heat to generate electricity. A single CSP plant can generate enough power for about 90,000 homes. This video explains what CSP is, how it works, and how systems like parabolic troughs produce renewable power. For more information on the Office of Energy Efficiency and Renewable Energy's CSP research, see the Solar Energy Technology Program's Concentrating Solar Power Web page at http://www1.eere.energy.gov/solar/csp_program.html.

None

2010-01-01T23:59:59.000Z

304

A high-speed beam of lithium droplets for collecting diverted energy and particles in ITER (International Thermonuclear Experimental Reactor)  

SciTech Connect (OSTI)

A high-speed (160m/s) beam (0.14 {times} 0.86m) of liquid-lithium droplets passing through the divertor region(s) below (and above) the main plasma has the potential to replace and out-perform conventional'' solid divertor plates in both heat and particle removal. In addition to superior heat-collection properties, the lithium beam would: remove impurities; require low power to circulate the lithium; exhibit low-recycle divertor operation compatible with lower-hybrid current drive, H-mode plasma confinement, and no flow reversal in the edge plasma; be insensitive to plasma shifts; and finally protect solid structures from the plasma thermal energy for those disruptions that deposit energy preferentially into the divertor while simultaneously being rapidly re-established after a major disruption. Scoping calculations identifying the beam configuration and the droplet dynamics, including formation, MHD effects, gravitational effects, thermal response and hydrodynamics, are presented. Limitations and uncertainties are also discussed. 20 refs., 6 figs., 3 tabs.

Werley, K.A.

1989-01-01T23:59:59.000Z

305

Lasers Optical Engineering Concentration Science/Math/Engineering Electives  

E-Print Network [OSTI]

Chemistry I 4 CHEM113; CHEM114 F, S CIVE260 Engineering Mechanics ­ Statics 3 MATH160; PH141 or co-reg FLasers Optical Engineering Concentration Science/Math/Engineering Electives Course Number Course; CHEM245 or CHEM341 or CHEM345 F, S, SS BIOM306/ BTEC306 Bioprocess Engineering 4 CHEM107 or CHEM111; PH

Schumacher, Russ

306

Electrical Engineering Concentration Science/Math/Engineering Electives  

E-Print Network [OSTI]

Chemistry I 4 CHEM113; CHEM114 F, S CIVE260 Engineering Mechanics ­ Statics 3 MATH160; PH141 or co-reg FElectrical Engineering Concentration Science/Math/Engineering Electives Course Number Course Title or CHEM341 or CHEM345 F, S, SS BIOM306/ BTEC306 Bioprocess Engineering 4 CHEM107 or CHEM111; PH121 or PH

Schumacher, Russ

307

ACCELERATED IMPROVEMENT A CONCENTRATED APPROACH  

E-Print Network [OSTI]

ACCELERATED IMPROVEMENT A CONCENTRATED APPROACH FOR CONTINUOUS IMPROVEMENT #12;Accelerated.quality.wisc.edu O F F I C E O F Q U A L I T Y I M P R O V E M E N T Accelerated Improvement This guide to improving resources. You will find helpful information needed to conduct an Accelerated Improvement project

Shapiro, Vadim

308

Physics and Astronomy Geophysics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Geophysics Concentration Strongly recommended courses Credits Term Dept. to Geophysics 3 PHY 3230 Thermal Physics 3 CHE 1101 Introductory Chemistry - I 3 CHE 1110 Introductory Chemistry Laboratory - I 1 GLY 1101 Intro. to Physical Geology 4 GLY 2250 Evolution of the Earth 4 GLY 4705 Adv

Thaxton, Christopher S.

309

Effect of droplet size on the behavior and characteristics of emulsified acid  

E-Print Network [OSTI]

Emulsified acids have been extensively used in the oil industry since 1933. Most of the available research and publications discussed mainly the application of emulsified acid in the field. A fair number of the published work also discussed in depth...

Almutairi, Saleh Haif

2008-10-10T23:59:59.000Z

310

Compendium of Experimental Cetane Numbers  

SciTech Connect (OSTI)

This report is an updated version of the 2004 Compendium of Experimental Cetane Number Data and presents a compilation of measured cetane numbers for pure chemical compounds. It includes all available single compound cetane number data found in the scientific literature up until March 2014 as well as a number of unpublished values, most measured over the past decade at the National Renewable Energy Laboratory. This Compendium contains cetane values for 389 pure compounds, including 189 hydrocarbons and 201 oxygenates. More than 250 individual measurements are new to this version of the Compendium. For many compounds, numerous measurements are included, often collected by different researchers using different methods. Cetane number is a relative ranking of a fuel's autoignition characteristics for use in compression ignition engines; it is based on the amount of time between fuel injection and ignition, also known as ignition delay. The cetane number is typically measured either in a single-cylinder engine or a constant volume combustion chamber. Values in the previous Compendium derived from octane numbers have been removed, and replaced with a brief analysis of the correlation between cetane numbers and octane numbers. The discussion on the accuracy and precision of the most commonly used methods for measuring cetane has been expanded and the data has been annotated extensively to provide additional information that will help the reader judge the relative reliability of individual results.

Yanowitz, J.; Ratcliff, M. A.; McCormick, R. L.; Taylor, J. D.; Murphy, M. J.

2014-08-01T23:59:59.000Z

311

Number  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C. 20545*.MSE Cores" _ ,' ,:.'' , /v-i 2 -i 3

312

Modeling the impact of sea-spray on particle concentrations in a coastal city  

SciTech Connect (OSTI)

An atmospheric chemistry-transport model is used to assess the impacts of sea-spray chemistry on the particle composition in and downwind of a coastal city--Vancouver, British Columbia. Reactions in/on sea-spray affect the entire particle ensemble and particularly the size distribution of particle nitrate. Urban air quality, and particularly airborne particles, is a major concern in terms of human health impacts. Sea-spray is known to be a major component of the particle ensemble at coastal sites yet relatively few air quality models include the interaction of gases with sea-spray and the fate of the particles produced. Sea-spray is not an inert addition to the particle ensemble because heterogeneous chemistry in/on sea-spray droplets changes the droplets composition and the particle size distribution, which impacts deposition and the ion balance in different particle size fractions. It is shown that the ISOPART model is capable of simulating gas and particle concentrations in the coastal metropolis of Vancouver and the surrounding valley. It is also demonstrated that to accurately simulate ambient concentrations of particles and reactive/soluble gases in a coastal valley it is absolutely critical to include heterogeneous chemistry in/on sea-spray. Partitioning of total particle-NO{sub 3}{sup -} between sea-spray and NH{sub 4}NO{sub 3} is highly sensitive to the amount of sea-spray present, and hence the initial vertical profile, sea-spray source functions [48] and the wind speed. When a fixed wind speed is used to initialize the sea-spray vertical profiles, as expected, the sea-spray concentration decays with distance inland, but the particle-NO{sub 3}{sup -} concentration decays more slowly because it is also a function of the uptake rate for HNO{sub 3}. The simulation results imply model analyses of air quality in coastal cities conducted without inclusion of sea-spray interactions may yield highly misleading results in terms of emission sensitivities of the PM size distribution. The sensitivity of the model results to the initial sea spray profile further suggests there would be great benefit in better definition of the vertical profile of size resolved sea-spray for use in such model studies.

Pryor, S C; Barthelmie, R J; Schoof, J T; Binkowski, F S; Monache, L D; Stull, R B

2006-04-19T23:59:59.000Z

313

Development of concentrator solar cells  

SciTech Connect (OSTI)

A limited pilot production run on PESC silicon solar cells for use at high concentrations (200 to 400 suns) is summarized. The front contact design of the cells was modified for operation without prismatic covers. The original objective of the contract was to systematically complete a process consolidation phase, in which all the, process improvements developed during the contract would be combined in a pilot production run. This pilot run was going to provide, a basis for estimating cell costs when produced at high throughput. Because of DOE funding limitations, the Photovoltaic Concentrator Initiative is on hold, and Applied Solar`s contract was operated at a low level of effort for most of 1993. The results obtained from the reduced scope pilot run showed the effects of discontinuous process optimization and characterization. However, the run provided valuable insight into the technical areas that can be optimized to achieve the original goals of the contract.

Not Available

1994-08-01T23:59:59.000Z

314

Photovoltaic concentrator module improvements study  

SciTech Connect (OSTI)

This report presents results of a project to design and fabricate an improved photovoltaic concentrator module. Using previous work as a baseline, this study conducted analyses and testing to select major module components and design features. The lens parquet and concentrator solar cell were selected from the highest performing, available components. A single 185X point-focus module was fabricated by the project team and tested at Sandia. Major module characteristics include a 6 by 4 compression-molded acrylic lens parquet (0.737 m{sup 2} area), twenty-four 0.2 ohms-cm, FZ, p-Si solar cells (1.56 cm{sup 2} area) soldered to ceramic substrates and copper heat spreaders, and an aluminized steel housing with corrugated bottom. This project marked the first attempt to use prismatic covers on solar cells in a high-concentration, point-focus application. Cells with 15 percent metallization were obtained, but problems with the fabrication and placement of prismatic covers on these cells lead to the decision not to use covers in the prototype module. Cell assembly fabrication, module fabrication, and module optical design activities are presented here. Test results are also presented for bare cells, cell assemblies, and module. At operating conditions of 981 watts/m{sup 2} DNI and an estimated cell temperature of 65{degrees}C, the module demonstrated an efficiency of 13.9 percent prior to stressed environmental exposure. 12 refs., 56 figs., 7 tabs.

Levy, S.L.; Kerschen, K.A. (Black and Veatch, Kansas City, MO (United States)); Hutchison, G. (Solar Kinetics, Inc., Dallas, TX (United States)); Nowlan, M.J. (Spire Corp., Bedford, MA (United States))

1991-08-01T23:59:59.000Z

315

Self-Assembly of Spherical Particles on an Evaporating Sessile Droplet Michael Schnall-Levin, Eric Lauga, and Michael P. Brenner*  

E-Print Network [OSTI]

Self-Assembly of Spherical Particles on an Evaporating Sessile Droplet Michael Schnall-Levin, Eric for self-assembly is to design an energy landscape so that the desired outcome is the energy minimum.1 together. The extreme nonuniqueness of the self-assembly of three- dimensional particle clusters

Lauga, Eric

316

Investigation of Water Droplet Interaction with the Sidewalls of the Gas Channel in a PEM Fuel Cell in the Presence of Gas Flow  

E-Print Network [OSTI]

forms of hydrogen powered technologies exist and have been well-researched, fuel cells is considered efficiently in the fuel cells (4). Inefficient water removal results in flooding of the catalyst layerInvestigation of Water Droplet Interaction with the Sidewalls of the Gas Channel in a PEM Fuel Cell

Kandlikar, Satish

317

Optically trapped aqueous droplets for single molecule studies J. E. Reiner, A. M. Crawford, R. B. Kishore, Lori S. Goldner, and K. Helmersona  

E-Print Network [OSTI]

-of-refraction fluorocarbon medium. The index-of-refraction mismatch between the container and fluorocarbon, individual manipula- tion, and application of femtoliter aqueous droplets in an immiscible fluorocarbon and the matrix fluorocarbon. Encapsulation in liposomes re- quires the lipid membrane to surround the analyte

Goldner, Lori S.

318

Interfacial temperature measurements, high-speed visualization and finite-element simulations of droplet impact and evaporation on a solid surface  

E-Print Network [OSTI]

The objective of this work is to investigate the coupling of fluid dynamics, heat transfer and mass transfer during the impact and evaporation of droplets on a heated solid substrate. A laser-based thermoreflectance method is used to measure the temperature at the solid-liquid interface, with a time and space resolution of 100 {\\mu}s and 20 {\\mu}m, respectively. Isopropanol droplets with micro- and nanoliter volumes are considered. A finite-element model is used to simulate the transient fluid dynamics and heat transfer during the droplet deposition process, considering the dynamics of wetting as well as Laplace and Marangoni stresses on the liquid-gas boundary. For cases involving evaporation, the diffusion of vapor in the atmosphere is solved numerically, providing an exact boundary condition for the evaporative flux at the droplet-air interface. High-speed visualizations are performed to provide matching parameters for the wetting model used in the simulations. Numerical and experimental results are compar...

Bhardwaj, Rajneesh; Attinger, Daniel

2010-01-01T23:59:59.000Z

319

Experiential Component Approval Form Concentration in Nanotechnology  

E-Print Network [OSTI]

Experiential Component Approval Form Concentration in Nanotechnology Return completed form to ENG Plan to complete the experiential component as a requirement for the concentration in Nanotechnology to complete the experiential component for the Nanotechnology Concentration by: Research Experience in Lab

Goldberg, Bennett

320

A microfabricated dielectrophoretic micro-organism concentrator  

E-Print Network [OSTI]

This project focuses on the development of a micro-organism concentrator. Pathogen detection, particularly MEMS based detection, is often limited by sample concentration. The proposed concentrator will interface with a ...

Muller, Rikky, 1980-

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Atomized Spraying of Liquid Metal Droplets on Desired Substrate Surfaces as a Generalized Way for Ubiquitous Printed Electronics  

E-Print Network [OSTI]

A direct electronics printing technique through atomized spraying for patterning room temperature liquid metal droplets on desired substrate surfaces is proposed and experimentally demonstrated for the first time. This method has generalized purpose and is highly flexible and capable of fabricating electronic components on any desired target objects, with either flat or rough surfaces, made of different materials, or different orientations from 1-D to 3-D geometrical configurations. With a pre-designed mask, the liquid metal ink can be directly deposited on the substrate to form various specific patterns which lead to the rapid prototyping of electronic devices. Further, extended printing strategies were also suggested to illustrate the adaptability of the method such that the natural porous structure can be adopted to offer an alternative way of making transparent conductive film with an optical transmittance of 47% and a sheet resistance of 5.167{\\Omega}/O. Different from the former direct writing technolog...

Zhang, Qin; Liu, Jing

2013-01-01T23:59:59.000Z

322

RNG: A Practitioner's Overview Random Number Generation  

E-Print Network [OSTI]

RNG: A Practitioner's Overview Random Number Generation A Practitioner's Overview Prof. Michael and Monte Carlo Methods Pseudorandom number generation Types of pseudorandom numbers Properties of these pseudorandom numbers Parallelization of pseudorandom number generators New directions for SPRNG Quasirandom

Mascagni, Michael

323

Concentration Averaging | Department of Energy  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of Energy Power Systems EngineeringDepartmentSmart Grid RFI:Fresno U.S.Energy Order issuedConcentration

324

Motion at low Reynolds number  

E-Print Network [OSTI]

The work described in this thesis centers on inertialess motion at low Reynolds numbers at the crossroad between biofluids and microfluids. Here we address questions regarding locomotion of micro-swimmers, transport of ...

Tam, Daniel See Wai, 1980-

2008-01-01T23:59:59.000Z

325

Departmental Business Instrument Numbering System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To prescribe procedures for assigning identifying numbers to all Department of Energy (DOE), including the National Nuclear Security Administration, business instruments. Cancels DOE 1331.2B. Canceled by DOE O 540.1A.

2000-12-05T23:59:59.000Z

326

Departmental Business Instrument Numbering System  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The Order prescribes the procedures for assigning identifying numbers to all Department of Energy (DOE) and National Nuclear Security Administration (NNSA) business instruments. Cancels DOE O 540.1. Canceled by DOE O 540.1B.

2005-01-27T23:59:59.000Z

327

Concentrating Solar Power: Technology Overview  

SciTech Connect (OSTI)

Concentrating Solar Power (CSP) has the potential to contribute significantly to the generation of electricity by renewable energy resources in the U.S.. Thermal storage can extend the duty cycle of CSP beyond daytime hours to early evening where the value of electricity is often the highest. The potential solar resource for the southwest U.S. is identified, along with the need to add power lines to bring the power to consumers. CSP plants in the U.S. and abroad are described. The CSP cost of electricity at the busbar is discussed. With current incentives, CSP is approaching competiveness with conventional gas-fired systems during peak-demand hours when the price of electricity is the highest. It is projected that a mature CSP industry of over 4 GWe will be able to reduce the energy cost by about 50%, and that U.S. capacity could be 120 GW by 2050.

Mehos, M.

2008-01-01T23:59:59.000Z

328

On rings of structural numbers  

E-Print Network [OSTI]

structural numbers over the set X, and let B(X) have the operations defined above with equality also as before. Theorem I. l. If X is any set, then B(X) is a commutative ring with identity. Proof. The structural number 0 is the additive identity element... with identity g. Definition I. 7. If A, B e S(X) then A'B = (P U q ( p e A, q e B, p Il q = &f and p U q can be formed in an odd number of ways). ~E1 t. 4. L t A = (( . b), (bj. 7 )) 4 B = ((b, c), (b), (a)) be in S(X) for some X. Then AD B = {{b, a), {a...

Powell, Wayne Bruce

2012-06-07T23:59:59.000Z

329

Cost Analysis of a Concentrator Photovoltaic Hydrogen Production System  

SciTech Connect (OSTI)

The development of efficient, renewable methods of producing hydrogen are essential for the success of the hydrogen economy. Since the feedstock for electrolysis is water, there are no harmful pollutants emitted during the use of the fuel. Furthermore, it has become evident that concentrator photovoltaic (CPV) systems have a number of unique attributes that could shortcut the development process, and increase the efficiency of hydrogen production to a point where economics will then drive the commercial development to mass scale.

Thompson, J. R.; McConnell, R. D.; Mosleh, M.

2005-08-01T23:59:59.000Z

330

Production of fullerenes using concentrated solar flux  

DOE Patents [OSTI]

A method of producing soot containing high amounts of fullerenes comprising: providing a primary concentrator capable of impingement of a concentrated beam of sunlight onto a carbon source to cause vaporization of carbon and subsequent formation of fullerenes, or providing a solar furnace having a primary concentrator with a focal point that concentrates a solar beam of sunlight; providing a reflective secondary concentrator having an entrance aperture and an exit aperture at the focal point of the solar furnace; providing a carbon source at the exit aperture of the secondary concentrator; supplying an inert gas over the carbon source to keep the secondary concentrator free from vaporized carbon; and impinging a concentrated beam of sunlight from the secondary concentrator on the carbon source to vaporize the carbon source into a soot containing high amounts of fullerenes.

Fields, Clark L. (Greeley, CO); Pitts, John Roland (Lakewood, CO); King, David E. (Lakewood, CO); Hale, Mary Jane (Golden, CO); Bingham, Carl E. (Denver, CO); Lewandowski, Allan A. (Evergreen, CO)

2000-01-01T23:59:59.000Z

331

EC PVSEC, Glasgow, May 2000 EFFICIENT 20-50 SUN CONCENTRATOR CELLS  

E-Print Network [OSTI]

for Sustainable Energy Systems Australian National University, 0200, Australia andrew.blakers@anu.edu.au ABSTRACT concentration system. It comprises two-axis sun-tracking parabolic glass mirrors and a receiver with solar cells. INTRODUCTION Concentrator systems have a number of important advantages over conventional PV systems, the main

332

Tuning the plasmon energy of Palladium-Hydrogen systems by varying the Hydrogen concentration  

E-Print Network [OSTI]

Tuning the plasmon energy of Palladium-Hydrogen systems by varying the Hydrogen concentration V M of the resonance energy on the hydrogen concentration is roughly similar to that in bulk. PACS numbers: 71.20.Be on hydrogen uptake used in Reference [8] seems well grounded [10], there is no theoretical support for its

Muiño, Ricardo Díez

333

Concentrating Solar Power (Fact Sheet)  

SciTech Connect (OSTI)

Concentrating Solar Power (CSP) offers a utility-scale, firm, dispatchable renewable energy option that can help meet the nation's goal of making solar energy cost competitive with other energy sources by the end of the decade. The DOE SunShot Initiative is a collaborative national initiative to make solar energy technologies cost-competitive with other forms of energy by reducing the cost of solar energy systems by about 75% by the end of the decade. Reducing the total installed cost for utility-scale solar electricity to roughly 6 cents per kilowatt hour without subsidies will result in rapid, large-scale adoption of solar electricity across the United States. Reaching this goal will re-establish American technological leadership, improve the nation's energy security, and strengthen U.S. economic competitiveness in the global clean energy race. SunShot will work to bring down the full cost of solar - including the costs of solar cells and installation by focusing on four main pillars: (1) Technologies for solar cells and arrays that convert sunlight to energy; (2) Electronics that optimize the performance of the installation; (3) Improvements in the efficiency of solar manufacturing processes; and (4) Installation, design, and permitting for solar energy systems.

Not Available

2011-10-01T23:59:59.000Z

334

Planar photovoltaic solar concentrator module  

DOE Patents [OSTI]

A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor. 5 figs.

Chiang, C.J.

1992-12-01T23:59:59.000Z

335

Planar photovoltaic solar concentrator module  

DOE Patents [OSTI]

A planar photovoltaic concentrator module for producing an electrical signal from incident solar radiation includes an electrically insulating housing having a front wall, an opposing back wall and a hollow interior. A solar cell having electrical terminals is positioned within the interior of the housing. A planar conductor is connected with a terminal of the solar cell of the same polarity. A lens forming the front wall of the housing is operable to direct solar radiation incident to the lens into the interior of the housing. A refractive optical element in contact with the solar cell and facing the lens receives the solar radiation directed into the interior of the housing by the lens and directs the solar radiation to the solar cell to cause the solar cell to generate an electrical signal. An electrically conductive planar member is positioned in the housing to rest on the housing back wall in supporting relation with the solar cell terminal of opposite polarity. The planar member is operable to dissipate heat radiated by the solar cell as the solar cell generates an electrical signal and further forms a solar cell conductor connected with the solar cell terminal to permit the electrical signal generated by the solar cell to be measured between the planar member and the conductor.

Chiang, Clement J. (New Brunswick, NJ)

1992-01-01T23:59:59.000Z

336

The Transformation of Solid Atmospheric Particles into Liquid Droplets Through Heterogeneous Chemistry: Laboratory Insights into the Processing of Calcium Containing Mineral Dust Aerosol in the Troposphere  

SciTech Connect (OSTI)

[1] Individual calcium carbonate particles reacted with gas- phase nitric acid at 293 K have been followed using Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray (EDX) analysis as a function of time and relative humidity (RH). The rate of calcium carbonate to calcium nitrate conversion is significantly enhanced in the presence of water vapor. The SEM images clearly show that solid CaCO3 particles are converted to spherical droplets as the reaction proceeds. The process occurs through a two-step mechanism involving the conversion of calcium carbonate into calcium nitrate followed by the deliquescence of the calcium nitrate product. The change in phase of the particles and the significant reactivity of nitric acid and CaCO3 at low RH are a direct result of the deliquescence of the product at low RH. This is the first laboratory study to show the phase transformation of solid particles into liquid droplets through heterogeneous chemistry.

Krueger, Brenda J.; Grassian, Vicki H.; Laskin, Alexander; Cowin, James P.

2003-02-15T23:59:59.000Z

337

Summary of Dissolved Concentration Limits  

SciTech Connect (OSTI)

According to the Technical Work Plan titled Technical Work Plan for Waste Form Degradation Process Model Report for SR (CRWMS M&O 2000a), the purpose of this study is to perform abstractions on solubility limits of radioactive elements based on the process-level information and thermodynamic databases provided by Natural Environment Program Operations (NEPO) and Waste Package Operations (WPO). The scope of this analysis is to produce solubility limits as functions, distributions, or constants for all transported radioactive elements identified by the Performance Assessment Operations (PAO) radioisotope screening. Results from an expert elicitation for solubility limits of most radioactive elements were used in the previous Total System Performance Assessments (TSPAs). However, the elicitation conducted in 1993 does not meet the criteria set forth by the U.S. Nuclear Regulatory Commission (NRC) due to lack of documentation and traceability (Kotra et al. 1996, Section 3). Therefore, at the Waste Form Abstraction Workshop held on February 2-4, 1999, at Albuquerque, New Mexico, the Yucca Mountain Site Characterization Project (YMP) decided to develop geochemical models to study solubility for the proposed Monitored Geologic Repository. WPO/NEPO is to develop process-level solubility models, including review and compilation of relevant thermodynamic data. PAO's responsibility is to perform abstractions based on the process models and chemical conditions and to produce solubility distributions or response surfaces applicable to the proposed repository. The results of this analysis and conceptual model will feed the performance assessment for Total System Performance Assessment--Site Recommendation (TSPA-SR) and Total System Performance Assessment--License Application (TSPA-LA), and to the Waste Form Degradation Process Model Report section on concentration limits.

Yueting Chen

2001-06-11T23:59:59.000Z

338

Modelling the settling of suspended sediments for concentrations close to the gelling concentration  

E-Print Network [OSTI]

Modelling the settling of suspended sediments for concentrations close to the gelling concentration the sedimentation phase. In the case of cohesive sediments, the estimation of the gelling concentration, although and consolidation behaviour for concentrations close to the gelling concentration. Key words: sedimentation

Paris-Sud XI, Université de

339

Modeling of concentrating solar thermoelectric generators  

E-Print Network [OSTI]

The conversion of solar power into electricity is dominated by non-concentrating photovoltaics and concentrating solar thermal systems. Recently, it has been shown that solar thermoelectric generators (STEGs) are a viable ...

Ren, Zhifeng

340

Quantifying nonstationary radioactivity concentration fluctuations near Chernobyl: A complete statistical description  

E-Print Network [OSTI]

Quantifying nonstationary radioactivity concentration fluctuations near Chernobyl: A complete fluctuations measured near Chernobyl after the 1986 disaster and find three new results: #i# the histogram patterns. PACS number#s#: 89.60.#x, 02.50.Fz, 05.45.Tp, 87.66.Na I. INTRODUCTION Chernobyl's No. 4 reactor

Shlyakhter, Ilya

Note: This page contains sample records for the topic "droplet number concentration" 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

Concentration in Mathematics (2014-2015)  

E-Print Network [OSTI]

Concentration in Mathematics (2014-2015) What Can You Do With Math? Concentration in mathematics is an excellent preparation for a career in either pure or applied mathematics, in academia or in industry on mathematical methods, a math concentration can provide an invaluable background for many different careers

Wolfe, Patrick J.

342

Arkansas Natural Gas Number of Industrial Consumers (Number of Elements)  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelinesProved Reserves (Billion CubicCubic Feet)YearIndustrial Consumers (Number of Elements)

343

Kentucky Natural Gas Number of Industrial Consumers (Number of Elements)  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 6330 0 14 15Industrial Consumers (Number of Elements)

344

Connecticut Natural Gas Number of Commercial Consumers (Number of Elements)  

Gasoline and Diesel Fuel Update (EIA)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) " ,"ClickPipelines About U.S.30Natural Gas Glossary529 633 622 56623 4623 42 180NumberDecadeCommercial

345

Numerical study of effect of the gas-coolant free surface on the droplet fragmentation behavior of coolants  

SciTech Connect (OSTI)

This paper presents results of a numerical investigation on the behavior of melt drops falling in a gas (vapor) space and then penetrating into a liquid volume through the gas-liquid interface. The phenomenon studied here is, usually, observed when a liquid drop falls through air into a water pool and is, specially, of interest when a hypothetical severe reactor core meltdown accident is considered. The objective of this work is to study the effect of the gas-liquid interface on the dynamic evolution of the interaction area between the fragmenting melt drop and water. In the present study, the Navier-Stokes equations are solved for three phases (gas, liquid and melt-drop) using a higher-order, explicit, numerical method, called Cubic-Interpolated Pseudo-Particle (CIP) method, which is employed in combination with an advanced front-capturing scheme, named the Level Set Algorithm (LSA). By using this method, reasonable physical pictures of droplet deformation and fragmentation during movement in a stationary uniform water pool, and in a gas-liquid two-layer volume, is simulated. Effect of the gas-liquid interface on the drop deformation and fragmentation is analyzed by comparing the simulation results obtained for the two cases. Effects of the drop geometry, and of the flow conditions, on the behavior of the melt drop are also analyzed.

Li, H.X.; Anh, B.V.; Dinh, T.N.; Sehgal, B.R.

1999-07-01T23:59:59.000Z

346

www.rsc.org Registered Charity Number 207890  

E-Print Network [OSTI]

to stabilize the drops and make the droplet interface biocompatible. Title: Biocompatible surfactants for water-in-fluorocarbon.rsc.org/loc | Lab on a Chip Biocompatible surfactants for water-in-fluorocarbon emulsions C. Holtze,*a A. C. Rowat806706f Drops of water-in-fluorocarbon emulsions have great potential for compartmentalizing both

347

www.rsc.org Registered Charity Number 207890  

E-Print Network [OSTI]

to stabilize the drops and make the droplet interface biocompatible. Title: Biocompatible surfactants for water-in-fluorocarbon Biocompatible surfactants for water-in-fluorocarbon emulsions C. Holtze *a , A. C. Rowata , J. J. Agrestia , Jth July 2008 First published on the web 2nd September 2008 Drops of water-in-fluorocarbon emulsions

Rowat, Amy C.

348

Development of a prototype lignin concentration sensor. Final report. Draft  

SciTech Connect (OSTI)

The ultimate objective of the DOE-sponsored program discussed in this report is to commercialize an instrument for real-time, in-situ measurement of lignin in wood pulp at a variety of locations in the pulp process stream. The instrument will be used as a primary sensor for process control in the pulp and paper industry. Work done by B&W prior to the initiation of this program had shown: there is a functional relationship between the fluorescence intensity and the Kappa number as measured at the pulp mill laboratory. Kappa number is a standard wet chemical method for determination of the lignin concentration; the relationship is one of decreasing intensity with Kappa number, indicating operation in the quenched fluorescence regime; a great deal of scatter in the data. Because of the preliminary nature of the study, the origin of the scatter was not identified. This report documents the results of laboratory measurements made on a variety of well defined pulp samples to generate the data necessary to: determine the feasibility of an instrument for on-line lignin concentration measurement using laser fluorescence; identify the preferred measurement strategy; define the range of applicability of the instrument; and to provide background information to guide the design of a field-worthy prototype.

Jeffers, L.A.

1994-11-01T23:59:59.000Z

349

Characteristics of the raindrop distributions in RICO shallow cumulus O. Geoffroy1  

E-Print Network [OSTI]

in function of a power law of the rainwater content and raindrop number concentration is proposed. 1 by condensation until its collection efficiency with respect to other cloud droplets starts to be significant, i

Siebesma, Pier

350

Atmos. Chem. Phys., 14, 1089710909, 2014 www.atmos-chem-phys.net/14/10897/2014/  

E-Print Network [OSTI]

as a function of a power law of the rainwater content and raindrop number concentration is proposed. 1 is driven by condensation until its collection efficiency with respect to other cloud droplets starts

Pierce, Jeffrey

351

Low Mach Number Fluctuating Hydrodynamics of Diffusively Mixing Fluids  

E-Print Network [OSTI]

We formulate low Mach number fluctuating hydrodynamic equations appropriate for modeling diffusive mixing in isothermal mixtures of fluids with different density and transport coefficients. These equations eliminate the fluctuations in pressure associated with the propagation of sound waves by replacing the equation of state with a local thermodynamic constraint. We demonstrate that the low Mach number model preserves the spatio-temporal spectrum of the slower diffusive fluctuations. We develop a strictly conservative finite-volume spatial discretization of the low Mach number fluctuating equations in both two and three dimensions and construct several explicit Runge-Kutta temporal integrators that strictly maintain the equation of state constraint. The resulting spatio-temporal discretization is second-order accurate deterministically and maintains fluctuation-dissipation balance in the linearized stochastic equations. We apply our algorithms to model the development of giant concentration fluctuations in the presence of concentration gradients, and investigate the validity of common simplifications such as neglecting the spatial non-homogeneity of density and transport properties. We perform simulations of diffusive mixing of two fluids of different densities in two dimensions and compare the results of low Mach number continuum simulations to hard-disk molecular dynamics simulations. Excellent agreement is observed between the particle and continuum simulations of giant fluctuations during time-dependent diffusive mixing.

A. Donev; A. J. Nonaka; Y. Sun; T. G. Fai; A. L. Garcia; J. B. Bell

2014-04-29T23:59:59.000Z

352

Device Independent Random Number Generation  

E-Print Network [OSTI]

Randomness is an invaluable resource in today's life with a broad use reaching from numerical simulations through randomized algorithms to cryptography. However, on the classical level no true randomness is available and even the use of simple quantum devices in a prepare-measure setting suffers from lack of stability and controllability. This gave rise to a group of quantum protocols that provide randomness certified by classical statistical tests -- Device Independent Quantum Random Number Generators. In this paper we review the most relevant results in this field, which allow the production of almost perfect randomness with help of quantum devices, supplemented with an arbitrary weak source of additional randomness. This is in fact the best one could hope for to achieve, as with no starting randomness (corresponding to no free will in a different concept) even a quantum world would have a fully deterministic description.

Mataj Pivoluska; Martin Plesch

2015-02-23T23:59:59.000Z

353

Particle Number & Particulate Mass Emissions Measurements on...  

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

Number & Particulate Mass Emissions Measurements on a 'Euro VI' Heavy-duty Engine using the PMP Methodologies Particle Number & Particulate Mass Emissions Measurements on a 'Euro...

354

Sandia National Laboratories: Concentrating Solar Power  

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

Solar Power Technical Management Position On July 12, 2012, in Concentrating Solar Power, Energy, Facilities, Job Listing, National Solar Thermal Test Facility, News,...

355

Sandia National Laboratories: Concentrating Solar Power  

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

Safety and Health Go Green Initiative On December 19, 2012, in Concentrating Solar Power, Energy, Events, Facilities, National Solar Thermal Test Facility, News, News...

356

Sandia National Laboratories: Concentrating Solar Power  

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

Sandia and EMCORE: Solar Photovoltaics, Fiber Optics, MODE, and Energy Efficiency On March 29, 2013, in Concentrating Solar Power, Energy, Partnership, Photovoltaic, Renewable...

357

Sandia National Laboratories: Concentrating Solar Power  

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

Center in Vermont Achieves Milestone Installation On September 23, 2014, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, News &...

358

Concentrating Solar Power Resources and Technologies  

Broader source: Energy.gov [DOE]

This page provides a brief overview of concentrating solar power (CSP) technologies supplemented by specific information to apply CSP within the Federal sector.

359

A combined microfluidic/dielectrophoretic microorganism concentrator  

E-Print Network [OSTI]

This thesis presents the development of a high-throughput microfluidic microorganism concentrator for pathogen detection applications. Interdigitated electrodes lining the bottom of the channel use positive dielectrophoretic ...

Gadish, Nitzan

2005-01-01T23:59:59.000Z

360

Alignment method for parabolic trough solar concentrators  

DOE Patents [OSTI]

A Theoretical Overlay Photographic (TOP) alignment method uses the overlay of a theoretical projected image of a perfectly aligned concentrator on a photographic image of the concentrator to align the mirror facets of a parabolic trough solar concentrator. The alignment method is practical and straightforward, and inherently aligns the mirror facets to the receiver. When integrated with clinometer measurements for which gravity and mechanical drag effects have been accounted for and which are made in a manner and location consistent with the alignment method, all of the mirrors on a common drive can be aligned and optimized for any concentrator orientation.

Diver, Richard B. (Albuquerque, NM)

2010-02-23T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Change in Contaminant Concentration in Fraser  

E-Print Network [OSTI]

during this period: dioxins, furans, polycyclic aromatic hydrocarbons (PAHs), chlorophenolics, resin to the peak in suspended sediment concentration during the freshet sampling period, iv) dioxins

362

Sandia National Laboratories: Concentrating Solar Power: Efficiently...  

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

Funding Award On June 4, 2014, in Advanced Materials Laboratory, Concentrating Solar Power, Energy, Energy Storage, Facilities, National Solar Thermal Test Facility,...

363

Concentrating Solar Power (Revised) (Fact Sheet)  

SciTech Connect (OSTI)

The fact sheet summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

Not Available

2010-11-01T23:59:59.000Z

364

Microtracking and Self-Adaptive Solar Concentration  

Broader source: Energy.gov [DOE]

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 2325, 2013 near Phoenix, Arizona.

365

Concentrating Solar Power: Energy from Mirrors  

SciTech Connect (OSTI)

This fact sheet explains how concentrating solar power technology works and the three types of systems in development today: trough, dish, and central receiver.

Poole, L.

2001-02-27T23:59:59.000Z

366

Verification Challenges at Low Numbers  

SciTech Connect (OSTI)

Many papers have dealt with the political difficulties and ramifications of deep nuclear arms reductions, and the issues of Going to Zero. Political issues include extended deterrence, conventional weapons, ballistic missile defense, and regional and geo-political security issues. At each step on the road to low numbers, the verification required to ensure compliance of all parties will increase significantly. Looking post New START, the next step will likely include warhead limits in the neighborhood of 1000 . Further reductions will include stepping stones at1000 warheads, 100s of warheads, and then 10s of warheads before final elimination could be considered of the last few remaining warheads and weapons. This paper will focus on these three threshold reduction levels, 1000, 100s, 10s. For each, the issues and challenges will be discussed, potential solutions will be identified, and the verification technologies and chain of custody measures that address these solutions will be surveyed. It is important to note that many of the issues that need to be addressed have no current solution. In these cases, the paper will explore new or novel technologies that could be applied. These technologies will draw from the research and development that is ongoing throughout the national laboratory complex, and will look at technologies utilized in other areas of industry for their application to arms control verification.

Benz, Jacob M.; Booker, Paul M.; McDonald, Benjamin S.

2013-06-01T23:59:59.000Z

367

MANAGEMENT INFORMATION SYSTEMS (MIS) CONCENTRATION FOR UNDERGRADUATES  

E-Print Network [OSTI]

MANAGEMENT INFORMATION SYSTEMS (MIS) CONCENTRATION FOR UNDERGRADUATES The management information systems concentration, like a major, focuses on the use of information technology for value creation creation. Link to Rensselaer 2012-2013 Catalog Required Courses MGMT 4240 Systems Analysis & Design MGMT

Salama, Khaled

368

Requirements for a Concentration in Energy Technologies  

E-Print Network [OSTI]

Technologies ­ 4 cr ENG EC 417 ­ Electric Energy Systems: Adapting to Renewable Resources ­ 4 cr Additional* - Methods of Environmental Policy ­ 4 cr ENG ME 533 ­ Energy Conversion ­ 4 cr ENG EC/ME/SE 543Requirements for a Concentration in Energy Technologies The concentration in Energy Technologies

369

EFFECTS OF VARIOUS CONCENTRATIONS OF DDT  

E-Print Network [OSTI]

EFFECTS OF VARIOUS CONCENTRATIONS OF DDT ON SEVERAL SPECIES OF FISH OF DIFFERENT SIZES Marine Biiii OF VARIOUS CONCENTRATIONS OF DDT ON SEVERAL SPECIES OF FISH OF DIFFERENT SIZES Marine Binlo^'i., i i Report - Fisheries No. U EFFECTS OF VARIOUS 0ONCENTRATI)^S OF DDT ON SEVEKAL SPECIES OF FISH OF DIFFERENT

370

A study of ignition and combustion characteristics of isolated coal water slurry droplet using digital image processing technique  

E-Print Network [OSTI]

at constant pressure Coal water slurry Diffusion coefficient (Damkohler number) Activation energy Higher heating value Gasification rate constant Flame lift off distance Mass of CWS drop Number of coal particles in a single CWS drop Prandtl number... Parameters. . . II. 2. Coal Ignition and Combustion . . 13 II. 2. 1. Introduction. II. 2. 2. Pyrolysis. . . . . . II. 2. 3. Volatiles Oxidation. . . 13 . . 15 . . 16 II. 2. 4. Ignition. II. 2. 5. Coal Combustion . . . . 16 . . 17 CHAPTER Page 11...

Bhadra, Tanmoy

1998-01-01T23:59:59.000Z

371

Mercury concentrations in Maine sport fishes  

SciTech Connect (OSTI)

To assess mercury contamination of fish in Maine, fish were collected from 120 randomly selected lakes. The collection goal for each lake was five fish of the single most common sport fish species within the size range commonly harvested by anglers. Skinless, boneless fillets of fish from each lake were composited, homogenized, and analyzed for total mercury. The two most abundant species, brook trout Salvelinus fontinalis and smallmouth bass Micropterus dolomieu, were also analyzed individually. The composite fish analyses indicate high concentrations of mercury, particularly in large and long-lived nonsalmonid species. Chain pickerel Esox niger, smallmouth bass, largemouth bass Micropterus salmoides, and white perch Morone americana had the highest average mercury concentrations, and brook trout and yellow perch Perca flavescens had the lowest. The mean species composite mercury concentration was positively correlated with a factor incorporating the average size and age of the fish. Lakes containing fish with high mercury concentrations were not clustered near known industrial or population centers but were commonest in the area within 150 km of the seacoast, reflecting the geographical distribution of species that contained higher mercury concentrations. Stocked and wild brook trout were not different in length or weight, but wild fish were older and had higher mercury concentrations. Fish populations maintained by frequent introductions of hatchery-produced fish and subject to high angler exploitation rates may consist of younger fish with lower exposure to environmental mercury and thus contain lower concentrations than wild populations.

Stafford, C.P. [Univ. of Maine, Orono, ME (United States)] [Univ. of Maine, Orono, ME (United States); Haines, T.A. [Geological Survey, Orono, ME (United States)] [Geological Survey, Orono, ME (United States)

1997-01-01T23:59:59.000Z

372

Uniform flux dish concentrators for photovoltaic application  

SciTech Connect (OSTI)

Researchers at the National Renewable Energy Laboratory (NREL) have designed a unique and innovative molded dish concentrator capable of producing a uniform flux profile on a flat target plane. Concentration levels of 100--200 suns, which are uniform over an area of several square inches, can be directly achieved for collection apertures of a reasonable size ({approximately}1.5-m diameter). Such performance would be immediately applicable to photovoltaic (PV) use. Economic concerns have shown that the proposed approach would be less expensive thatn Fresnel lens concepts or other dish concentrator designs that require complicated and costly receivers to mix the flux to obtain a uniform distribution. 12 refs.

Jorgensen, G; Wendelin, T

1992-05-01T23:59:59.000Z

373

Si concentrator solar cell development. [Final report  

SciTech Connect (OSTI)

This is the final report of a program to develop a commercial, high-efficiency, low-cost concentrator solar cell compatible with Spectrolab`s existing manufacturing infrastructure for space solar cells. The period covered is between 1991 and 1993. The program was funded through Sandia National Laboratories through the DOE concentrator initiative and, was also cost shared by Spectrolab. As a result of this program, Spectrolab implemented solar cells achieving an efficiency of over 19% at 200 to 300X concentration. The cells are compatible with DOE guidelines for a cell price necessary to achieve a cost of electricity of 12 cents a kilowatthour.

Krut, D.D. [Spectrolab, Inc., Sylmar, CA (United States)

1994-10-01T23:59:59.000Z

374

Goodbye Pareto Principle, Hello Long Tail: The Effect of Search Costs on the Concentration of Product Sales  

E-Print Network [OSTI]

Many markets have historically been dominated by a small number of best-selling products. The Pareto principle, also known as the 80/20 rule, describes this common pattern of sales concentration. However, information ...

Brynjolfsson, Erik

375

A critical evaluation of the literature relating advertising expenditure to economic concentration  

E-Print Network [OSTI]

and concen- tration which would result over time in a decrease in the number of firms in an industry and an increase in the market power among the largest firms. This hypothesis has been subjected to six major studies which tested the validity of Kaldor.... Bain's Method of Classifying Industries by Concentration Ratios 2. Simple Correlation Coefficients 20 3. Results of Multiple Regression on Profit Rates . . 21 4. FTC Industry Classification Criteria 25 5. Eight-Firm Mean Concentration Ratios...

Wells, Monroe Gaddy

1970-01-01T23:59:59.000Z

376

Prime number generation and factor elimination  

E-Print Network [OSTI]

We have presented a multivariate polynomial function termed as factor elimination function,by which, we can generate prime numbers. This function's mapping behavior can explain the irregularities in the occurrence of prime numbers on the number line. Generally the different categories of prime numbers found till date, satisfy the form of this function. We present some absolute and probabilistic conditions for the primality of the number generated by this method. This function is capable of leading to highly efficient algorithms for generating prime numbers.

Vineet Kumar

2014-10-06T23:59:59.000Z

377

Grant Title: INNOVATIVE TECHNOLOGY EXPERIENCES FOR STUDENTS AND TEACHERS (ITEST) Funding Opportunity Number: NSF 12-597. CFDA Number(s): 47.076.  

E-Print Network [OSTI]

Opportunity Number: NSF 12-597. CFDA Number(s): 47.076. Agency/Department: National Science Foundation

Farritor, Shane

378

Grant Title: RESEARCH EXPERIENCES FOR TEACHERS (RET) IN ENGINEERING AND COMPUTER Funding Opportunity Number: NSF 11-509. CFDA Number(s): 47.041.  

E-Print Network [OSTI]

Opportunity Number: NSF 11-509. CFDA Number(s): 47.041. Agency/Department: National Science Foundation

Farritor, Shane

379

Energy 101: Concentrating Solar Power | Department of Energy  

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

Concentrating Solar Power Energy 101: Concentrating Solar Power Addthis Description From towers to dishes to linear mirrors to troughs, concentrating solar power (CSP) technologies...

380

Dynamical thickening transition in plate coating with concentrated surfactant solutions  

E-Print Network [OSTI]

We present a large range of experimental data concerning the influence of surfactants on the well-known Landau-Levich-Derjaguin experiment where a liquid film is generated by pulling a solid plate out of a bath. The thickness h of the film was measured as a function of the pulling velocity V for different kind of surfactant and at various concentrations. Measuring the thickening factor $\\alpha=h/h_{LLD}$, where hLLD is obtained for a pure liquid, in a wide range of capillary ($Ca=\\eta V/\\gamma$), two regimes of constant thickening can be identified: at small capillary number, $\\alpha$ is large due to a confinement and surface elasticity (or Marangoni) effects and at large Ca, $\\alpha$ is slightly higher than unity, due to surface viscous effects. At intermediate Ca, $\\alpha$ decreases as Ca increases along a "dynamic transition". In the case of non-ionic surfactants, the dynamic transition occurs at a fixed Ca, independently of the surfactant concentration, while for ionic surfactants, the dynamic transition depends on the concentration due to the existence of an electrostatic barrier. The control of physico-chemical parameters allowed us to elucidate the nature of the dynamic transition and to relate it to surface rheology.

Jrme Delacotte; Lorraine Montel; Frdric Restagno; Benot Scheid; Benjamin Dollet; Howard A. Stone; Dominique Langevin; Emmanuelle Rio

2011-06-10T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Low-Cost Installation of Concentrating Photovoltaic  

E-Print Network [OSTI]

Low-Cost Installation of Concentrating Photovoltaic Renewable Energy Research Renewable Energy inhibit the potential growth of the California photovoltaic market: high installation costs, expenses improvements have been made in recent years on the assembly and deployment of flatplate photovoltaic

382

Sandia National Laboratories: Concentrating Solar Power  

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

Molten Salt Test Loop Melted Salt On October 10, 2012, in Concentrating Solar Power, Energy, News, Renewable Energy, Solar The Molten Salt Test Loop (MSTL) team at Sandia National...

383

Concentrating Solar Power Basics | Department of Energy  

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

heat. This thermal energy can then be used to produce electricity via a steam turbine or heat engine that drives a generator. Concentrating solar power offers a utility-scale,...

384

Gas concentration cells for utilizing energy  

DOE Patents [OSTI]

An apparatus and method are disclosed for utilizing energy, in which the apparatus may be used for generating electricity or as a heat pump. When used as an electrical generator, two gas concentration cells are connected in a closed gas circuit. The first gas concentration cell is heated and generates electricity. The second gas concentration cell repressurizes the gas which travels between the cells. The electrical energy which is generated by the first cell drives the second cell as well as an electrical load. When used as a heat pump, two gas concentration cells are connected in a closed gas circuit. The first cell is supplied with electrical energy from a direct current source and releases heat. The second cell absorbs heat. The apparatus has no moving parts and thus approximates a heat engine. 4 figs.

Salomon, R.E.

1987-06-30T23:59:59.000Z

385

Physics and Astronomy Engineering Electronics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Engineering Electronics Concentration Strongly recommended courses Credits PHY 3230 Thermal Physics 2 PHY 4330 Digital Electronics 3 PHY 4635 Advanced Microprocessors Grade PHY 4020 Computational Methods in Physics & Engineering 3 PHY 4620 Optics 4 PHY 4735

Thaxton, Christopher S.

386

Future trends in environmental mercury concentrations: implications  

E-Print Network [OSTI]

Future trends in environmental mercury concentrations: implications for prevention strategies interactions among natural and human climate system components; objectively assess uncertainty in economic, monitor and verify greenhouse gas emissions and climatic impacts. This reprint is one of a series intended

387

Advancing Concentrating Solar Power Research (Fact Sheet)  

SciTech Connect (OSTI)

Researchers at the National Renewable Energy Laboratory (NREL) provide scientific, engineering, and analytical expertise to help advance innovation in concentrating solar power (CSP). This fact sheet summarizes how NREL is advancing CSP research.

Not Available

2014-02-01T23:59:59.000Z

388

What does stabilizing greenhouse gas concentrations mean?  

E-Print Network [OSTI]

The MIT Emissions Prediction and Policy Analysis (EPPA) model is applied to an exploration of the national emissions obligations that would be required to stabilize atmospheric CO2 concentrations at levels now under active ...

Jacoby, Henry D.; Schmalensee, Richard.; Reiner, David M.

389

Gas concentration cells for utilizing energy  

DOE Patents [OSTI]

An apparatus and method for utilizing energy, in which the apparatus may be used for generating electricity or as a heat pump. When used as an electrical generator, two gas concentration cells are connected in a closed gas circuit. The first gas concentration cell is heated and generates electricity. The second gas concentration cell repressurizes the gas which travels between the cells. The electrical energy which is generated by the first cell drives the second cell as well as an electrical load. When used as a heat pump, two gas concentration cells are connected in a closed gas circuit. The first cell is supplied with electrical energy from a direct current source and releases heat. The second cell absorbs heat. The apparatus has no moving parts and thus approximates a heat engine.

Salomon, Robert E. (Philadelphia, PA)

1987-01-01T23:59:59.000Z

390

Concentrator E-F11 water test  

SciTech Connect (OSTI)

This document is the Process Test Report for performing operation testing with water of the modified E-F11 concentrator in PUREX on water. The test was performed to determine the effects of the following concentrator modifications; routing concentrator off-gasses via the PUREX air tunnel to the main stack, blanking of condenser cooling water, blanking of process condensate route to a crib, restricting flow to steam tube bundles, and routing of steam condensate to TK-F12. The test was successful. Concentrator boil-off rates of 6--7 gpm were achieved while the overheads exited the PUREX plant in vapor form. With minor recommended modifications, this process is recommended for use in processing PUREX deactivation flush solutions and other miscellaneous wastes accumulated during the completion of the deactivation project.

Ethington, P.R.

1994-02-25T23:59:59.000Z

391

DNA Concentration By UV Spectrophotometry Measure Absorption  

E-Print Network [OSTI]

DNA Concentration By UV Spectrophotometry Measure Absorption: 1. Dilute DNA to 0.5 to 50 µg 2. Measure absorption at 260 nm (A260). Start by zeroing instrument with TE buffer or dH2O alone

Aris, John P.

392

Landscape Design, Construction and Management Concentration  

E-Print Network [OSTI]

Landscape Design, Construction and Management Concentration Program of Study The Landscape for careers in the landscape and nursery industries, public gardens and arboreta. Opportunities include plant production, landscape design, construction and maintenance, marketing, management

Isaacs, Rufus

393

Evaporation/ Solution Droplet  

E-Print Network [OSTI]

· Nano-Catalysts · Fine Powders · Spray Drying MoO3 As prepared initially. After thermal annealing at 350oC. Hollow Spheres and Crystals 1st Hollow Crystals! Cooling bath Titanium Horn Collar & O-Rings Gas Production of Nano-Materials microporous shell internal macropores Hierarchically Porous Carbons Brandon Ito

Suslick, Kenneth S.

394

Concentrating solar power | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power Basics (The following text is derived from NREL's concentrating solar

395

Turing's normal numbers: towards randomness Veronica Becher  

E-Print Network [OSTI]

presumably in 1938 Alan Turing gave an algorithm that produces real numbers normal to every integer base- putable normal numbers, and this result should be attributed to Alan Turing. His manuscript entitled "A

396

High speed optical quantum random number generation  

E-Print Network [OSTI]

.3351 (2009). 6. I. Reidler, Y. Aviad, M. Rosenbluh, and I. Kanter, "Ultrahigh-speed random number generation

Weinfurter, Harald

397

Survey of lepton number violation via effective operators  

SciTech Connect (OSTI)

We survey 129 lepton number violating effective operators, consistent with the minimal standard model gauge group and particle content, of mass dimension up to and including 11. Upon requiring that each one radiatively generates the observed neutrino masses, we extract an associated characteristic cutoff energy scale which we use to calculate other observable manifestations of these operators for a number of current and future experimental probes, concentrating on lepton number violating phenomena. These include searches for neutrinoless double-beta decay and rare meson, lepton, and gauge boson decays. We also consider searches at hadron/lepton collider facilities in anticipation of the CERN LHC and the future ILC. We find that some operators are already disfavored by current data, while more are ripe to be probed by next-generation experiments. We also find that our current understanding of lepton mixing disfavors a subset of higher dimensional operators. While neutrinoless double-beta decay is the most promising signature of lepton number violation for the majority of operators, a handful is best probed by other means. We argue that a combination of constraints from various independent experimental sources will help to pinpoint the ''correct'' model of neutrino mass, or at least aid in narrowing down the set of possibilities.

Gouvea, Andre de; Jenkins, James [Northwestern University, Department of Physics and Astronomy, 2145 Sheridan Road, Evanston, Illinois 60208 (United States)

2008-01-01T23:59:59.000Z

398

Flammability limits of dusts: Minimum inerting concentrations  

SciTech Connect (OSTI)

A new flammability limit parameter has been defined as the Minimum Inerting Concentration (MIC). This is the concentration of inertant required to prevent a dust explosion regardless of fuel concentration. Previous experimental work at Fike in a 1-m{sup 3} spherical chamber has shown this flammability limit to exist for pulverized coal dust and cornstarch. In the current work, inerting experiments with aluminum, anthraquinone and polyethylene dusts as fuels were performed, using monoammonium phosphate and sodium bicarbonate as inertants. The results show that an MIC exists only for anthraquinone inerted with sodium bicarbonate. The other combustible dust and inertant mixtures did not show a definitive MIC, although they did show a strong dependence between inerting level and suspended fuel concentration. As the fuel concentration increased, the amount of inertant required to prevent an explosion decreased. Even though a definitive MIC was not found for most of the dusts an effective MIC can be estimated from the data. The use of MIC data can aid in the design of explosion suppression schemes.

Dastidar, A.G.; Amyotte, P.R. [Dalhousie Univ., Halifax, Nova Scotia (Canada). Dept. of Chemical Engineering] [Dalhousie Univ., Halifax, Nova Scotia (Canada). Dept. of Chemical Engineering; Going, J.; Chatrathi, K. [Fike Corp., Blue Springs, MO (United States)] [Fike Corp., Blue Springs, MO (United States)

1999-05-01T23:59:59.000Z

399

Wide range radioactive gas concentration detector  

DOE Patents [OSTI]

A wide range radioactive gas concentration detector and monitor which is capable of measuring radioactive gas concentrations over a range of eight orders of magnitude. The device of the present invention is designed to have an ionization chamber which is sufficiently small to give a fast response time for measuring radioactive gases but sufficiently large to provide accurate readings at low concentration levels. Closely spaced parallel plate grids provide a uniform electric field in the active region to improve the accuracy of measurements and reduce ion migration time so as to virtually eliminate errors due to ion recombination. The parallel plate grids are fabricated with a minimal surface area to reduce the effects of contamination resulting from absorption of contaminating materials on the surface of the grids. Additionally, the ionization chamber wall is spaced a sufficient distance from the active region of the ionization chamber to minimize contamination effects.

Anderson, David F. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

400

Point-focus spectral splitting solar concentrator for multiple cells concentrating photovoltaic system  

E-Print Network [OSTI]

In this paper we present and experimentally validate a low-cost design of a spectral splitting concentrator for the efficient conversion of solar energy. The optical device consists of a dispersive prismatic lens made of polycarbonate designed to simultaneously concentrate the solar light and split it into its spectral components. With respect to our previous implementation, this device concentrates the light along two axes and generates a light pattern compatible with the dimensions of a set of concentrating photovoltaic cells while providing a higher concentration ratio. The mathematical framework and the constructive approach used for the design are presented and the device performance is simulated using ray-tracing software. We obtain spectral separation in the visible range within a 3x1 cm2 area and a maximum concentration of 210x for a single wavelength. The device is fabricated by injection molding and its performance is experimentally investigated. We measure an optical transmissivity above 90% in the...

Maragliano, Carlo; Stefancich, Marco

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "droplet number concentration" 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

Resonance-shifting luminescent solar concentrators  

DOE Patents [OSTI]

An optical system and method to overcome luminescent solar concentrator inefficiencies by resonance-shifting, in which sharply directed emission from a bi-layer cavity into a glass substrate returns to interact with the cavity off-resonance at each subsequent reflection, significantly reducing reabsorption loss en route to the edges. In one embodiment, the system comprises a luminescent solar concentrator comprising a transparent substrate, a luminescent film having a variable thickness; and a low refractive index layer disposed between the transparent substrate and the luminescent film.

Giebink, Noel Christopher; Wiederrecht, Gary P; Wasielewski, Michael R

2014-09-23T23:59:59.000Z

402

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvide Insight for RotorConcentratingConcentrating

403

A Method for the Preparation of NIST Traceable Fossil Fuel Standards with Concentrations  

E-Print Network [OSTI]

at NIST with high accuracy and precision by isotope dilution thermal ionization mass spectrometry and quality control test samples. Unlike calibrants prepared from high purity components, this method enables Abbreviations M bar Calculated concentration of mixture EDXRF Energy Dispersive X-Ray Fluorescence n number

404

Estimation of CO concentration in high temperature PEM fuel cells using electrochemical impedance spectroscopy  

E-Print Network [OSTI]

Estimation of CO concentration in high temperature PEM fuel cells using electrochemical impedance (Numbers are presented in Tian et al. (2010)) and cost effectiveness (Price development for Fuel Cells / grid during the test. Efforts have been made in increasing operating temperatures of PEM fuel cells

Berning, Torsten

405

Physics and Astronomy Engineering/Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Engineering/Physics Concentration Strongly recommended courses Credits Term Electromagnetic Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4020 Computational Methods in Physics.) taken Grade PHY 4620 Optics 4 PHY 3211 Modern Physics II 3 PHY 4730 Analog Circuits 3 PHY 4640 Quantum

Thaxton, Christopher S.

406

Physics and Astronomy Radiation Safety Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Radiation Safety Physics Concentration Strongly recommended courses Credits Environucleonics Lab 1 PHY 3211 Modern Physics II 3 PHY 3230 Thermal Physics 3 PHY 4330 Digital Electronics 3 PHY 4820 Medical Physics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro. Chemistry I Lab 1 CHE 1102 Intro

Thaxton, Christopher S.

407

Physics and Astronomy Chemical Physics Concentration  

E-Print Network [OSTI]

Physics and Astronomy Chemical Physics Concentration Strongly recommended courses Credits Term Dept Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4640 Quantum Mechanics 3 PHY 4020 Computational Methods in Physics & Engineering 3 PHY 4330 Digital Electronics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro

Thaxton, Christopher S.

408

Measuring overall emittance of concentrator receiver pipes  

SciTech Connect (OSTI)

A simple and accurate method for measuring the overall emittance of receiver pipes used with cylindrical concentrators is described. Experimental measurements obtained for steel pipes with a black chrome over nickel selective surface are presented. The observed strong temperature dependence of emittance indicates that the use of room temperature emittance data will substantially overestimate collector efficiency. (SPH)

Gerich, J.W.; Reitter, T.A.; Merriam, M.F.

1980-03-01T23:59:59.000Z

409

Ideal light concentrators with reflector gaps  

SciTech Connect (OSTI)

A cylindrical or trough-like radiant energy concentration and collection device is provided. The device includes an energy absorber, a glazing enveloping the absorber and a reflective wall. The ideal contour of the reflective wall is determined with reference to a virtual absorber and not the actual absorber cross section.

Winston, R.

1980-10-28T23:59:59.000Z

410

Nonimaging light concentrator with uniform irradiance  

DOE Patents [OSTI]

A nonimaging light concentrator system including a primary collector of light, an optical mixer disposed near the focal zone for collecting light from the primary collector, the optical mixer having a transparent entrance aperture, an internally reflective housing for substantially total internal reflection of light, a transparent exit aperture and an array of photovoltaic cells disposed near the transparent exit aperture.

Winston, Roland (Chicago, IL); Gee, Randy C. (Arvada, CO)

2003-04-01T23:59:59.000Z

411

Nuclear Engineering Catalog 2013 Radiological Concentration  

E-Print Network [OSTI]

Nuclear Engineering Catalog 2013 Radiological Concentration Fall Math 141 or 147 (4) FA, SP, SU-approved by the department. Courses in Nuclear Engineering other than 500, 502 or 598 may also be used as technical electives on academic performance. Factors considered include overall grade point average, performance in selescted

Tennessee, University of

412

BME ERGONOMICS AND REHABILITATION ENGINEERING CONCENTRATION1  

E-Print Network [OSTI]

BME ERGONOMICS AND REHABILITATION ENGINEERING CONCENTRATION1 ­ F10 MS: 30 total credit hours minimum Advisor: Thomas J. Armstrong, Ph.D. (tja@umich.edu) Ergonomics /Rehabilitation Engineering: IOE 463 Measurement and Design of Work (3) (I, II) (Prerequisite: IOE 333 Ergonomics) BIOMED E 534

Eustice, Ryan

413

Business of Fashion Concentration & Minor -Newark Description  

E-Print Network [OSTI]

Business of Fashion Concentration & Minor - Newark Description The Business of Fashion program was designed to bridge the gap between creativity and business acumen. It is for artistic individuals who want to solidify their understanding of business, as well as for business students who want to learn how to apply

Lin, Xiaodong

414

Low chemical concentrating steam generating cycle  

DOE Patents [OSTI]

A steam cycle for a nuclear power plant having two optional modes of operation. A once-through mode of operation uses direct feed of coolant water to an evaporator avoiding excessive chemical concentration buildup. A recirculation mode of operation uses a recirculation loop to direct a portion of flow from the evaporator back through the evaporator to effectively increase evaporator flow.

Mangus, James D. (Greensburg, PA)

1983-01-01T23:59:59.000Z

415

Ideal light concentrators with reflector gaps  

SciTech Connect (OSTI)

A cylindrical or trough-like radiant energy concentration and collection device is provided. The device includes an energy absorber, a glazing enveloping the absorber and a reflective wall. The ideal contour of the reflective wall is determined with reference to a virtual absorber and not the actual absorber cross section.

Winston, Roland (Chicago, IL)

1980-01-01T23:59:59.000Z

416

Nuclear Engineering Catalog 2014 Radiological Concentration  

E-Print Network [OSTI]

Nuclear Engineering Catalog 2014 Radiological Concentration Fall Math 141 or 147 (4) FA, SP, SU-approved by the department. Courses in Nuclear Engineering other than 500, 502 or 598 may also be used as technical electives. No more than four (4) credit hours of nuclear engineering courses in which a C- or lower is the highest

Grissino-Mayer, Henri D.

417

Biomedical Engineering Graduate Concentration Fall 2013 Biotechnology  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2013 Biotechnology BIOTECHNOLOGY (select one course): BIOMEDE 410 Design and Applications of Biomaterials (3) (I) BIOMEDE 556 Cellular and Molecular Biomechanics (3) (I) BIOMEDE 574 Cells in Their Environment (3) (II) BIOMEDE 616 Analysis of Chemical Signaling

Eustice, Ryan

418

Biomedical Engineering Graduate Concentration Fall 2014 Bioelectrical  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2014 Bioelectrical Advisor: Cynthia Chestek, Ph.D. BIOELECTRICAL: BIOMEDE 417 Electrical Biophysics (4) (II) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I) BIOMEDICAL

Eustice, Ryan

419

Biomedical Engineering Graduate Concentration Fall 2013 Biomechanics  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2013 Biomechanics BIOMECHANICS (select one course): BIOMEDE 456 Tissue Mechanics (3) (I) BIOMEDE 476 Biofluid Mechanics (4) (II) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics

Eustice, Ryan

420

Biomedical Engineering Graduate Concentration Fall 2014 Biomaterials  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2014 Biomaterials Advisor: David Kohn, Ph.D. BIOMATERIALS: BIOMEDE 410 Design and Applications of Biomaterials (3) (I) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I) BIOMEDICAL

Eustice, Ryan

Note: This page contains sample records for the topic "droplet number concentration" 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

Biomedical Engineering Graduate Concentration Fall 2013 Bioelectrical  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2013 Bioelectrical BIOELECTRICAL: BIOMEDE 417 Electrical Biophysics (4) (II) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I) BIOMEDICAL RESEARCH AND DESIGN (select one

Eustice, Ryan

422

Biomedical Engineering Graduate Concentration Fall 2013 Biomaterials  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2013 Biomaterials BIOMATERIALS: BIOMEDE 410 Design and Applications of Biomaterials (3) (I) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550 Ethics and Enterprise (1) (I) BIOMEDICAL RESEARCH

Eustice, Ryan

423

Biomedical Engineering Graduate Concentration Fall 2014 Biomechanics  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2014 Biomechanics Advisor: Scott Hollister, Ph.D. BIOMECHANICS (select one course): BIOMEDE 456 Tissue Mechanics (3) (I) BIOMEDE 476 Biofluid Mechanics (4) (II) GENERAL (both courses are required): BIOMEDE 500 Biomedical Engineering Seminar (1) (I,II) BIOMEDE 550

Eustice, Ryan

424

Biomedical Engineering Graduate Concentration Fall 2014 Biotechnology  

E-Print Network [OSTI]

Biomedical Engineering Graduate Concentration ­ Fall 2014 Biotechnology Advisor: Michael Mayer, Ph.D. BIOTECHNOLOGY (select one course): BIOMEDE 410 Design and Applications of Biomaterials (3) (I) BIOMEDE 556 Cellular and Molecular Biomechanics (3) (I) BIOMEDE 574 Cells in Their Environment (3) (II) BIOMEDE 616

Eustice, Ryan

425

Harmonic resolution as a holographic quantum number  

E-Print Network [OSTI]

LBNL- 57239 Harmonic resolution as a holographic quantumhep-th/0310223 UCB-PTH-03/26 Harmonic resolution as aquantum number, the harmonic resolution K. The Bekenstein

Bousso, Raphael

2009-01-01T23:59:59.000Z

426

Parabolic-Dish Solar Concentrators of Film on Foam  

E-Print Network [OSTI]

Parabolic and spherical mirrors are constructed of aluminized PET polyester film on urethane foam. During construction, the chosen shape of the mirror is created by manipulating the elastic/plastic behavior of the film with air pressure. Foam is then applied to the film and, once hardened, air pressure is removed. At an f-number of 0.68, preliminary models have an optical angular spread of less than 0.25 degrees, a factor of 3.3 smaller than that for a perfectly spherical mirror. The possibility exists for creating large-lightweight mirrors with excellent shape and stiffness. These "film-on-foam" construction techniques may also be applicable to parabolic-trough solar concentrators but do not appear to be suitable for optical imaging applications because of irregularities in the film.

Barton, Sean A

2009-01-01T23:59:59.000Z

427

Value of Concentrating Solar Power and Thermal Energy Storage  

SciTech Connect (OSTI)

This paper examines the value of concentrating solar power (CSP) and thermal energy storage (TES) in four regions in the southwestern United States. Our analysis shows that TES can increase the value of CSP by allowing more thermal energy from a CSP plant?s solar field to be used, by allowing a CSP plant to accommodate a larger solar field, and by allowing CSP generation to be shifted to hours with higher energy prices. We analyze the sensitivity of CSP value to a number of factors, including the optimization period, price and solar forecasting, ancillary service sales, capacity value and dry cooling of the CSP plant. We also discuss the value of CSP plants and TES net of capital costs.

Sioshansi, R.; Denholm, P.

2010-02-01T23:59:59.000Z

428

Siting Utility-Scale Concentrating Solar Power Projects  

SciTech Connect (OSTI)

In 2002, Congress asked the U.S. Department of Energy to develop and scope out an initiative to fulfill the goal of having 1,000 megawatts (MW) of new parabolic trough, power tower, and dish engine solar capacity supplying the southwestern United States. In this paper, we present a review of the solar resource for Arizona, California, Nevada, and New Mexico. These four states have the greatest number of ''premium'' solar sites in the country and each has a renewable portfolio standard (RPS). We present information on the generation potential of the solar resources in these states. We also present regions within New Mexico that may be ideally suited for developing large-scale concentrating solar power (CSP) plants because of their proximity to load and their access to unconstrained transmission.

Mehos, M.; Owens, B.

2005-01-01T23:59:59.000Z

429

Electrorefining cell with parallel electrode/concentric cylinder cathode  

DOE Patents [OSTI]

A cathode-anode arrangement for use in an electrolytic cell is adapted for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium for further treatment and possible recycling as a fresh blanket or core fuel in a nuclear reactor. The arrangement includes a plurality of inner anodic dissolution baskets that are each attached to a respective support rod, are submerged in a molten lithium halide salt, and are rotationally displaced. An inner hollow cylindrical-shaped cathode is concentrically disposed about the inner anodic dissolution baskets. Concentrically disposed about the inner cathode in a spaced manner are a plurality of outer anodic dissolution baskets, while an outer hollow cylindrical-shaped is disposed about the outer anodic dissolution baskets. Uranium is transported from the anode baskets and deposited in a uniform cylindrical shape on the inner and outer cathode cylinders by rotating the anode baskets within the molten lithium halide salt. Scrapers located on each anode basket abrade and remove the spent fuel deposits on the surfaces of the inner and outer cathode cylinders, with the spent fuel falling to the bottom of the cell for removal. Cell resistance is reduced and uranium deposition rate enhanced by increasing the electrode area and reducing the anode-cathode spacing. Collection efficiency is enhanced by trapping and recovery of uranium dendrites scrapped off of the cylindrical cathodes which may be greater in number than two.

Gay, Eddie C. (Park Forest, IL); Miller, William E. (Naperville, IL); Laidler, James J. (Burr Ridge, IL)

1997-01-01T23:59:59.000Z

430

Electrorefining cell with parallel electrode/concentric cylinder cathode  

DOE Patents [OSTI]

A cathode-anode arrangement for use in an electrolytic cell is adapted for electrochemically refining spent nuclear fuel from a nuclear reactor and recovering purified uranium for further treatment and possible recycling as a fresh blanket or core fuel in a nuclear reactor. The arrangement includes a plurality of inner anodic dissolution baskets that are each attached to a respective support rod, are submerged in a molten lithium halide salt, and are rotationally displaced. An inner hollow cylindrical-shaped cathode is concentrically disposed about the inner anodic dissolution baskets. Concentrically disposed about the inner cathode in a spaced manner are a plurality of outer anodic dissolution baskets, while an outer hollow cylindrical-shaped is disposed about the outer anodic dissolution baskets. Uranium is transported from the anode baskets and deposited in a uniform cylindrical shape on the inner and outer cathode cylinders by rotating the anode baskets within the molten lithium halide salt. Scrapers located on each anode basket abrade and remove the spent fuel deposits on the surfaces of the inner and outer cathode cylinders, with the spent fuel falling to the bottom of the cell for removal. Cell resistance is reduced and uranium deposition rate enhanced by increasing the electrode area and reducing the anode-cathode spacing. Collection efficiency is enhanced by trapping and recovery of uranium dendrites scrapped off of the cylindrical cathodes which may be greater in number than two. 12 figs.

Gay, E.C.; Miller, W.E.; Laidler, J.J.

1997-07-22T23:59:59.000Z

431

Protocol Number: (IBC office use only)  

E-Print Network [OSTI]

Protocol Number: (IBC office use only) 1 UNF Registration of Biosafety Level 2 (BSL-2) A-2 Form", describe the methods of inactivation. #12;Protocol Number: (IBC office use only) 2 10. Describe the mechanism for decontaminating lab waste prior to disposal. Yes No If "Yes", describe the methods

Asaithambi, Asai

432

enter part number BNC / RP-BNC  

E-Print Network [OSTI]

enter part number Products 7/16 1.0/2.3 1.6/5.6 AFI AMC BNC / RP-BNC C FAKRA SMB FME HN MCX Mini ------- Product Search ------- Inventory Search Search Results for: 31-10152-RFX Results: 1 - 1 of 1 Part Number. All rights reserved. Copyright | Terms & Conditions | RF E-Mail Client | Contact Us | Amphenol

Berns, Hans-Gerd

433

GENERAL CHEMISTRY TEXTBOOK LIST ISBN Number  

E-Print Network [OSTI]

FALL 2013 GENERAL CHEMISTRY TEXTBOOK LIST Course Number ISBN Number Title of Text and/or Material Edition Author Publishers 11100 978-1-2591-9687-4 Introduction to Chemistry, 3rd ed. (packaged w 978-1-2591-6192-6 Chemistry, The Molecular Nature of Matter and Change, 6e (packaged w

Jiang, Wen

434

Company number 5857955 Wellcome Trust Finance plc  

E-Print Network [OSTI]

Company number 5857955 Wellcome Trust Finance plc Annual Report and Financial Statements Year ended 30 September 2013 #12;Company number 5857955 Wellcome Trust Finance plc Contents Page Directors Trust Finance plc Directors' Report For the year ended 30 September 2013 Report of the Directors

Rambaut, Andrew

435

Company number 5857955 Wellcome Trust Finance plc  

E-Print Network [OSTI]

Company number 5857955 Wellcome Trust Finance plc Annual Report and Financial Statements Year ended 30 September 2012 #12;Company number 5857955 Wellcome Trust Finance plc Contents Page Directors Trust Finance plc Directors' Report for the year ended 30 September 2012 Report of the Directors

Rambaut, Andrew

436

Compendium of Experimental Cetane Number Data  

SciTech Connect (OSTI)

In this report, we present a compilation of reported cetane numbers for pure chemical compounds. The compiled database contains cetane values for 299 pure compounds, including 156 hydrocarbons and 143 oxygenates. Cetane number is a relative ranking of fuels based on the amount of time between fuel injection and ignition. The cetane number is typically measured either in a combustion bomb or in a single-cylinder research engine. This report includes cetane values from several different measurement techniques - each of which has associated uncertainties. Additionally, many of the reported values are determined by measuring blending cetane numbers, which introduces significant error. In many cases, the measurement technique is not reported nor is there any discussion about the purity of the compounds. Nonetheless, the data in this report represent the best pure compound cetane number values available from the literature as of August 2004.

Murphy, M. J.; Taylor, J. D.; McCormick, R. L.

2004-09-01T23:59:59.000Z

437

Grant Title: NIDCD PHASE I/II PRELIMINARY CLINICAL TRIALS IN COMMUNICATION DISORDERS Funding Opportunity Number: PAR-12-123. CFDA Number(s): 93.173.  

E-Print Network [OSTI]

Opportunity Number: PAR-12-123. CFDA Number(s): 93.173. Agency/Department: National Institutes of Health (NIH

Farritor, Shane

438

Grant Title: AHRQ HEALTH SERVICES RESEARCH DEMONSTRATION AND DISSEMINATION GRANTS Funding Opportunity Number: PA-13-046. CFDA Number(s): 93.226.  

E-Print Network [OSTI]

Opportunity Number: PA-13-046. CFDA Number(s): 93.226. Agency/Department: Department of Health and Human

Farritor, Shane

439

Grant Title: INTELLECTUAL AND DEVELOPMENTAL DISABILITIES RESEARCH CENTERS (P30) Funding Opportunity Number: RFA-HD-13-002. CFDA Number(s): 93.865.  

E-Print Network [OSTI]

Number: RFA-HD-13-002. CFDA Number(s): 93.865. Agency/Department: Department of Health and Human Services

Farritor, Shane

440

Grant Title: RESEARCH ON PSYCHOPATHOLOGY IN INTELLECTUAL DISABILITIES (R01) Funding Opportunity Number: PA-12-219. CFDA Number(s): 93.242.  

E-Print Network [OSTI]

Number: PA-12-219. CFDA Number(s): 93.242. Agency/Department: Department of Health and Human Services

Farritor, Shane

Note: This page contains sample records for the topic "droplet number concentration" 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

Grant Title: MENTAL HEALTH RESEARCH DISSERTATION GRANT TO INCREASE DIVERSITY (R36) Funding Opportunity Number: PAR-12-103. CFDA Number(s): 93.242.  

E-Print Network [OSTI]

Opportunity Number: PAR-12-103. CFDA Number(s): 93.242. Agency/Department: Department of Health and Human

Farritor, Shane

442

Grant Title: RESEARCH GRANTS FOR PREVENTING VIOLENCE AND VIOLENCE-RELATED INJURY Funding Opportunity Number: RFA-CE-14-006. CFDA Number(s): 93.136.  

E-Print Network [OSTI]

Opportunity Number: RFA-CE-14-006. CFDA Number(s): 93.136. Agency/Department: Centers for Disease Control

Farritor, Shane

443

Grant Title: BEHAVIORAL SCIENCE TRACK AWARD FOR RAPID TRANSITION (B/START) (R03) Funding Opportunity Number: PAR-12-251. CFDA Number(s): 93.279.  

E-Print Network [OSTI]

Opportunity Number: PAR-12-251. CFDA Number(s): 93.279. Agency/Department: Department of Health and Human

Farritor, Shane

444

Grant Title: ARTS IN EDUCATION MODEL DEVELOPMENT AND DISSEMINATION PROGRAM Funding Opportunity Number: ED-GRANTS-022013-001. CFDA Number(s): 84.351D.  

E-Print Network [OSTI]

Number: ED-GRANTS-022013-001. CFDA Number(s): 84.351D. Agency/Department: Department of Education, Office

Farritor, Shane

445

Big Crunch-based omnidirectional light concentrators  

E-Print Network [OSTI]

Omnidirectional light concentration remains an unsolved problem despite such important practical applications as design of efficient mobile photovoltaic cells. Optical black hole designs developed recently offer partial solution to this problem. However, even these solutions are not truly omnidirectional since they do not exhibit a horizon, and at large enough incidence angles light may be trapped into quasi-stationary orbits around such imperfect optical black holes. Here we propose and realize experimentally another gravity-inspired design of a broadband omnidirectional light concentrator based on the cosmological Big Crunch solutions. By mimicking the Big Crunch spacetime via corresponding effective optical metric we make sure that every photon world line terminates in a single point.

Igor I. Smolyaninov; Yu-Ju Hung

2014-05-16T23:59:59.000Z

446

Thermal regeneration of an electrochemical concentration cell  

DOE Patents [OSTI]

A system and method for thermally regenerating an electrochemical concentration cell having first and second aluminum electrodes respectively positioned in contact with first and second electrolytes separated by an ion exchange member, the first and second electrolytes being composed of different concentrations of an ionic solvent and a salt, preferably an aluminum halide. The ionic solvent may be either organic or inorganic with a relatively low melting point, the ionic solvent and the salt form a complex wherein the free energy of formation of said complex is less than about -5 Kcal/mole. A distillation column using solar heat or low grade industrial waste heat receives the first and second electrolytes and thermally decomposes the salt-solvent complex to provide feed material for the two half cells.

Krumpelt, Michael (Naperville, IL); Bates, John K. (Plainfield, IL)

1981-01-01T23:59:59.000Z

447

Measurement of phenol concentrations using hemoglobin  

SciTech Connect (OSTI)

A major pollutant found in coal conversion wastewaters is phenol. Its removal by methods such as gravity separation, steam stripping, solvent extraction, biotreatment, and carbon adsorption must be monitored in order to determine that the water has been made safe for release back into the environment. Monitoring phenol concentrations in aqueous waste solutions is usually by the aminoantipyrine method. Other methods described for phenol determination include the use of enzyme electrodes based on immobilized tyrosinase and immobilized phenol hydroxylase. The authors present preliminary data upon which a new assay for phenols could be based. It concerns the peroxidatic activity of hemoglobin. When phenol, hemoglobin, and hydrogen peroxide are incubated together, there is an increase in absorbance at 260 nm which is proportional to the concentration of phenol. 5 references, 2 figures.

Woodward, J.; Allen, B.F.; Scott, M.A.

1984-01-01T23:59:59.000Z

448

Cast Stone Formulation At Higher Sodium Concentrations  

SciTech Connect (OSTI)

A low temperature waste form known as Cast Stone is being considered to provide supplemental Low Activity Waste (LAW) immobilization capacity for the Hanford site. Formulation of Cast Stone at high sodium concentrations is of interest since a significant reduction in the necessary volume of Cast Stone and subsequent disposal costs could be achieved if an acceptable waste form can be produced with a high sodium molarity salt solution combined with a high water to premix (or dry blend) ratio. The objectives of this study were to evaluate the factors involved with increasing the sodium concentration in Cast Stone, including production and performance properties and the retention and release of specific components of interest. Three factors were identified for the experimental matrix: the concentration of sodium in the simulated salt solution, the water to premix ratio, and the blast furnace slag portion of the premix. The salt solution simulants used in this study were formulated to represent the overall average waste composition. The cement, blast furnace slag, and fly ash were sourced from a supplier in the Hanford area in order to be representative. The test mixes were prepared in the laboratory and fresh properties were measured. Fresh density increased with increasing sodium molarity and with decreasing water to premix ratio, as expected given the individual densities of these components. Rheology measurements showed that all of the test mixes produced very fluid slurries. The fresh density and rheology data are of potential value in designing a future Cast Stone production facility. Standing water and density gradient testing showed that settling is not of particular concern for the high sodium compositions studied. Heat of hydration measurements may provide some insight into the reactions that occur within the test mixes, which may in turn be related to the properties and performance of the waste form. These measurements showed that increased sodium concentration in the salt solution reduced the time to peak heat flow, and reducing the amount of slag in the premix increased the time to peak heat flow. These observations may help to describe some of the cured properties of the samples, in particular the differences in compressive strength observed after 28 and 90 days of curing. Samples were cured for at least 28 days at ambient temperature in the laboratory prior to cured properties analyses. The low activity waste form for disposal at the Hanford Site is required to have a compressive strength of at least 500 psi. After 28 days of curing, several of the test mixes had mean compressive strengths that were below the 500 psi requirement. Higher sodium concentrations and higher water to premix ratios led to reduced compressive strength. Higher fly ash concentrations decreased the compressive strength after 28 days of curing. This may be explained in that the cementitious phases matured more quickly in the mixes with higher concentrations of slag, as evidenced by the data for the time to peak heat generation. All of the test mixes exhibited higher mean compressive strengths after 90 days of curing, with only one composition having a mean compressive strength of less than 500 psi. Leachability indices were determined for the test mixes for contaminants of interest. The leaching performance of the mixes evaluated in this study was not particularly sensitive to the factors used in the experimental design. This may be beneficial in demonstrating that the performance of the waste form is robust with respect to changes in the mix composition. The results of this study demonstrate the potential to achieve significantly higher waste loadings in Cast Stone and other low temperature, cementitious waste forms. Additional work is needed to elucidate the hydration mechanisms occurring in Cast Stone formulated with highly concentrated salt solutions since these reactions are responsible for determining the performance of the cured waste form. The thermal analyses completed in this study provide some preliminary insight, although the l

Fox, K. M.; Roberts, K. A.; Edwards, T. B.

2014-02-28T23:59:59.000Z

449

Cast Stone Formulation At Higher Sodium Concentrations  

SciTech Connect (OSTI)

A low temperature waste form known as Cast Stone is being considered to provide supplemental Low Activity Waste (LAW) immobilization capacity for the Hanford site. Formulation of Cast Stone at high sodium concentrations is of interest since a significant reduction in the necessary volume of Cast Stone and subsequent disposal costs could be achieved if an acceptable waste form can be produced with a high sodium molarity salt solution combined with a high water to premix (or dry blend) ratio. The objectives of this study were to evaluate the factors involved with increasing the sodium concentration in Cast Stone, including production and performance properties and the retention and release of specific components of interest. Three factors were identified for the experimental matrix: the concentration of sodium in the simulated salt solution, the water to premix ratio, and the blast furnace slag portion of the premix. The salt solution simulants used in this study were formulated to represent the overall average waste composition. The cement, blast furnace slag, and fly ash were sourced from a supplier in the Hanford area in order to be representative. The test mixes were prepared in the laboratory and fresh properties were measured. Fresh density increased with increasing sodium molarity and with decreasing water to premix ratio, as expected given the individual densities of these components. Rheology measurements showed that all of the test mixes produced very fluid slurries. The fresh density and rheology data are of potential value in designing a future Cast Stone production facility. Standing water and density gradient testing showed that settling is not of particular concern for the high sodium compositions studied. Heat of hydration measurements may provide some insight into the reactions that occur within the test mixes, which may in turn be related to the properties and performance of the waste form. These measurements showed that increased sodium concentration in the salt solution reduced the time to peak heat flow, and reducing the amount of slag in the premix increased the time to peak heat flow. These observations may help to describe some of the cured properties of the samples, in particular the differences in compressive strength observed after 28 and 90 days of curing. Samples were cured for at least 28 days at ambient temperature in the laboratory prior to cured properties analyses. The low activity waste form for disposal at the Hanford Site is required to have a compressive strength of at least 500 psi. After 28 days of curing, several of the test mixes had mean compressive strengths that were below the 500 psi requirement. Higher sodium concentrations and higher water to premix ratios led to reduced compressive strength. Higher fly ash concentrations decreased the compressive strength after 28 days of curing. This may be explained in that the cementitious phases matured more quickly in the mixes with higher concentrations of slag, as evidenced by the data for the time to peak heat generation. All of the test mixes exhibited higher mean compressive strengths after 90 days of curing, with only one composition having a mean compressive strength of less than 500 psi. Leach indices were determined for the test mixes for contaminants of interest. The leaching performance of the mixes evaluated in this study was not particularly sensitive to the factors used in the experimental design. This may be beneficial in demonstrating that the performance of the waste form is robust with respect to changes in the mix composition. The results of this study demonstrate the potential to achieve significantly higher waste loadings in Cast Stone and other low temperature, cementitious waste forms. Additional work is needed to elucidate the hydration mechanisms occurring in Cast Stone formulated with highly concentrated salt solutions since these reactions are responsible for determining the performance of the cured waste form. The thermal analyses completed in this study provide some preliminary insight, although the limited

Fox, K. M.; Roberts, K. A.; Edwards, T. B.

2013-09-17T23:59:59.000Z

450

Cast Stone Formulation At Higher Sodium Concentrations  

SciTech Connect (OSTI)

A low temperature waste form known as Cast Stone is being considered to provide supplemental Low Activity Waste (LAW) immobilization capacity for the Hanford site. Formulation of Cast Stone at high sodium concentrations is of interest since a significant reduction in the necessary volume of Cast Stone and subsequent disposal costs could be achieved if an acceptable waste form can be produced with a high sodium molarity salt solution combined with a high water to premix (or dry blend) ratio. The objectives of this study were to evaluate the factors involved with increasing the sodium concentration in Cast Stone, including production and performance properties and the retention and release of specific components of interest. Three factors were identified for the experimental matrix: the concentration of sodium in the simulated salt solution, the water to premix ratio, and the blast furnace slag portion of the premix. The salt solution simulants used in this study were formulated to represent the overall average waste composition. The cement, blast furnace slag, and fly ash were sourced from a supplier in the Hanford area in order to be representative. The test mixes were prepared in the laboratory and fresh properties were measured. Fresh density increased with increasing sodium molarity and with decreasing water to premix ratio, as expected given the individual densities of these components. Rheology measurements showed that all of the test mixes produced very fluid slurries. The fresh density and rheology data are of potential value in designing a future Cast Stone production facility. Standing water and density gradient testing showed that settling is not of particular concern for the high sodium compositions studied. Heat of hydration measurements may provide some insight into the reactions that occur within the test mixes, which may in turn be related to the properties and performance of the waste form. These measurements showed that increased sodium concentration in the salt solution reduced the time to peak heat flow, and reducing the amount of slag in the premix increased the time to peak heat flow. These observations may help to describe some of the cured properties of the samples, in particular the differences in compressive strength observed after 28 and 90 days of curing. Samples were cured for at least 28 days at ambient temperature in the laboratory prior to cured properties analyses. The low activity waste form for disposal at the Hanford Site is required to have a compressive strength of at least 500 psi. After 28 days of curing, several of the test mixes had mean compressive strengths that were below the 500 psi requirement. Higher sodium concentrations and higher water to premix ratios led to reduced compressive strength. Higher fly ash concentrations decreased the compressive strength after 28 days of curing. This may be explained in that the cementitious phases matured more quickly in the mixes with higher concentrations of slag, as evidenced by the data for the time to peak heat generation. All of the test mixes exhibited higher mean compressive strengths after 90 days of curing, with only one composition having a mean compressive strength of less than 500 psi. Leach indices were determined for the test mixes for contaminants of interest. The leaching performance of the mixes evaluated in this study was not particularly sensitive to the factors used in the experimental design. This may be beneficial in demonstrating that the performance of the waste form is robust with respect to changes in the mix composition. The results of this study demonstrate the potential to achieve significantly higher waste loadings in Cast Stone and other low temperature, cementitious waste forms. Additional work is needed to elucidate the hydration mechanisms occurring in Cast Stone formulated with highly concentrated salt solutions since these reactions are responsible for determining the performance of the cured waste form. The thermal analyses completed in this study provide some preliminary insight, although the limited

Fox, K. M.; Edwards, T. A.; Roberts, K. B.

2013-10-02T23:59:59.000Z

451

Ozone concentrations in El Paso, Texas  

SciTech Connect (OSTI)

El Paso, Texas may have a problem in meeting ambient air standards due to influx of pollutants from foreign sources. Cd. Juarez, Chihuahua, and Fort Bliss abut the city and are areas over which the Texas Air Control Board (TACB) has little or no jurisdiction. The Board maintains two Continuous Air Monitoring Stations (CAM) in El Paso. Ozone, nitric oxide, and nitrogen dioxide data were obtained from these stations. If the EPA Empirical Kinetic Model is used for El Paso, reducing NMHC concentrations may increase rather than decrease O/sub 3/ concentrations. The Texas State Implementation Plan, while not based on Empirical Kinetic Modeling, calls for a reduction of 18% in NMHC. However, 31% of all NMHC in El Paso arise from sources over which Texas had little (a federal military reservation) or no (Cd. Juarez) jurisdiction. It appears the TACB is correct in believing the SIP for O/sub 3/ may not bring El Paso into compliance. (JMT)

Crocker, J.E. (Texas Air Control Board, Austin); Applegate, H.G.

1983-02-01T23:59:59.000Z

452

Thermal regeneration of an electrochemical concentration cell  

DOE Patents [OSTI]

A system and method are described for thermally regenerating an electrochemical concentration cell having first and second aluminum electrodes respectively positioned in contact with first and second electrolytes separated by an ion exchange member, the first and second electrolytes being composed of different concentrations of an ionic solvent and a salt, preferably an aluminum halide. The ionic solvent may be either organic or inorganic with a relatively low melting point, the ionic solvent and the salt form a complex wherein the free energy of formation of said complex is less than about -5 kcal/mole. A distillation column using solar heat or low grade industrial waste heat receives the first and second electrolytes and thermally decomposes the salt-solvent complex to provide feed material for the two half cells.

Krumpelt, M.; Bates, J.K.

1980-05-09T23:59:59.000Z

453

Material for a luminescent solar concentrator  

DOE Patents [OSTI]

A material for use in a luminescent solar concentrator, formed by ceramitizing the luminescent ion Cr/sup 3 +/ with a transparent ceramic glass containing mullite. The resultant material has tiny Cr/sup 3 +/-bearing crystallites dispersed uniformly through an amorphous glass. The invention combines the high luminescent efficiency of Cr/sup 3 +/ in the crystalline phase with the practical and economical advantages of glass technology.

Andrews, L.J.

1984-01-01T23:59:59.000Z

454

Photovoltaic concentrator assembly with optically active cover  

DOE Patents [OSTI]

A photovoltaic concentrator assembly that includes a housing that defines an internal volume and includes a rim, wherein the rim defines an opening into the internal volume, a photovoltaic cell positioned in the internal volume, and an optical element that includes an optically active body and a flange extending outward from the body, wherein the flange is sealingly engaged with the rim of the housing to enclose the internal volume.

Plesniak, Adam P

2014-01-21T23:59:59.000Z

455

Linear Concentrator Systems | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Powerstories on climateJuno Beach,October,Lighthouse Solar JumpLindeLinear

456

Concentrating solar power | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentratingRenewable Solutions LLC Jump to: navigation,Area (Keith, Et Al.,

457

DOE High Performance Concentrator PV Project  

SciTech Connect (OSTI)

Much in demand are next-generation photovoltaic (PV) technologies that can be used economically to make a large-scale impact on world electricity production. The U.S. Department of Energy (DOE) initiated the High-Performance Photovoltaic (HiPerf PV) Project to substantially increase the viability of PV for cost-competitive applications so that PV can contribute significantly to both our energy supply and environment. To accomplish such results, the National Center for Photovoltaics (NCPV) directs in-house and subcontracted research in high-performance polycrystalline thin-film and multijunction concentrator devices with the goal of enabling progress of high-efficiency technologies toward commercial-prototype products. We will describe the details of the subcontractor and in-house progress in exploring and accelerating pathways of III-V multijunction concentrator solar cells and systems toward their long-term goals. By 2020, we anticipate that this project will have demonstrated 33% system efficiency and a system price of $1.00/Wp for concentrator PV systems using III-V multijunction solar cells with efficiencies over 41%.

McConnell, R.; Symko-Davies, M.

2005-08-01T23:59:59.000Z

458

Solar Tracing Sensors for Maximum Solar Concentrator Efficiency  

Energy Innovation Portal (Marketing Summaries) [EERE]

Concentrating Solar Power (CSP) relies on thermodynamic processes to convert concentrated light into useful forms of energy. Accurate sun tracking enables higher concentration ratios and improved efficiency through higher temperature processes and lower losses...

2013-03-12T23:59:59.000Z

459

Grant Title: DECISION, RISK AND MANAGEMENT SCIENCES (DRMS) Funding Opportunity Number: PD-98-1321. CFDA Number(s): 47.075.  

E-Print Network [OSTI]

-1321. CFDA Number(s): 47.075. Agency/Department: National Science Foundation. Area of Research: Research

Farritor, Shane

460

Grant Title: NIH DIRECTOR'S EARLY INDEPENDENCE AWARDS (DP5) Funding Opportunity Number: RFA-RM-12-018. CFDA Number(s): 93.310.  

E-Print Network [OSTI]

-018. CFDA Number(s): 93.310. Agency/Department: Department of Health and Human Services, Office of Strategic

Farritor, Shane

Note: This page contains sample records for the topic "droplet number concentration" 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

Grant Title: NIDCD CLINICAL RESEARCH CENTER GRANT (P50) Funding Opportunity Number: PAR-13-277. CFDA Number(s): 93.173.  

E-Print Network [OSTI]

-277. CFDA Number(s): 93.173. Agency/Department: National Institutes of Health (NIH), National Institute

Farritor, Shane

462

Grant Title: ACADEMIC-COMMUNITY PARTNERSHIP CONFERENCE SERIES (R13) Funding Opportunity Number: PAR-12-102. CFDA Number(s): 93.865.  

E-Print Network [OSTI]

-12-102. CFDA Number(s): 93.865. Agency/Department: Department of Health and Human Services, National

Farritor, Shane

463

Grant Title: ALCOHOL RESEARCH EDUCATION PROJECT GRANTS (R25) Funding Opportunity Number: PAR -11-205. CFDA Number(s) 93.273.  

E-Print Network [OSTI]

-205. CFDA Number(s) 93.273. Agency/Department: Department of Health and Human Services (HHS), National

Farritor, Shane

464

Grant Title: NIDA CORE CENTER OF EXCELLENCE GRANT PROGRAM (P30) Funding Opportunity Number: PAR-10-220. CFDA Number(s): 93.279.  

E-Print Network [OSTI]

-220. CFDA Number(s): 93.279. Agency/Department: Department of Health and Human Services, National Institutes

Farritor, Shane

465

Grant Title: INITIATIVE FOR MAXIMIZING STUDENT DEVELOPMENT (IMSD) (R25) Funding Opportunity Number: PAR-13-082. CFDA Number(s): 93.859.  

E-Print Network [OSTI]

: PAR-13-082. CFDA Number(s): 93.859. Agency/Department: National Institutes of Health (NIH), National

Farritor, Shane

466

Concentrating Solar Power (Fact Sheet), SunShot Initiative, U...  

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

Concentrating Solar Power Concentrating Solar Power (CSP) offers a utility-scale, firm, dispatchable renewable energy option that can help meet the nation's goal of making solar...

467

World's Largest Concentrating Solar Power Plant Opens in California...  

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

World's Largest Concentrating Solar Power Plant Opens in California World's Largest Concentrating Solar Power Plant Opens in California February 19, 2014 - 12:00am Addthis Ivanpah,...

468

Influence of Electron Donor/Acceptor Concentrations on Hydrous...  

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

Influence of Electron DonorAcceptor Concentrations on Hydrous Ferric Oxide (HFO) Bioreduction. Influence of Electron DonorAcceptor Concentrations on Hydrous Ferric Oxide (HFO)...

469

National Laboratory Concentrating Solar Power Research and Development...  

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

National Laboratory Concentrating Solar Power Research and Development National Laboratory Concentrating Solar Power Research and Development This fact sheet describes the current...

470

2014 SunShot Initiative Portfolio Book: Concentrating Solar Power...  

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

Concentrating Solar Power 2014 SunShot Initiative Portfolio Book: Concentrating Solar Power The 2014 SunShot Initiative Portfolio Book outlines the progress towards the goals...

471

National Laboratory Concentrating Solar Power Research and Development...  

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

National Laboratory Concentrating Solar Power Research and Development National Laboratory Concentrating Solar Power Research and Development The SunShot National Laboratory...

472

EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility...  

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

83: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ May 3, 2010 EA-1683:...

473

$60 Million to Fund Projects Advancing Concentrating Solar Power...  

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

Concentrating Solar Power November 8, 2011 - 10:34am Addthis A 101 video on concentrating solar panel systems. | Courtesy of the Energy Department Jesse Gary Solar Energy...

474

Atomic detail brownian dynamics simulations of concentrated protein...  

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

detail brownian dynamics simulations of concentrated protein solutions with a mean field treatment of hydrodynamic Atomic detail brownian dynamics simulations of concentrated...

475

Contributions to Metric Number Technical Report  

E-Print Network [OSTI]

Contributions to Metric Number Theory Paul Rowe Technical Report RHULMA20022 5 December 2002, Professor Glyn Harman, for sug- gestions of problems to attempt, helpful advice on methods and help

Dent, Alexander W.

476

Estimating visitor and visit numbers to  

E-Print Network [OSTI]

............................................ 24 4.5 Monitoring and Evaluating Quality of Life for CRS'07 .......................................25 4.6 Quality of experience visitor, visit and total numbers of visits to woodlands. This document builds on guidance on visitor

477

Dynamical real numbers and living systems  

E-Print Network [OSTI]

Recently uncovered second derivative discontinuous solutions of the simplest linear ordinary differential equation define not only an nonstandard extension of the framework of the ordinary calculus, but also provide a dynamical representation of the ordinary real number system. Every real number can be visualized as a living cell -like structure, endowed with a definite evolutionary arrow. We discuss the relevance of this extended calculus in the study of living systems. We also present an intelligent version of the Newton's first law of motion.

Dhurjati Prasad Datta

2010-01-11T23:59:59.000Z

478

Chemical kinetics of cetane number improving agents  

SciTech Connect (OSTI)

The increasing demand for diesel fuels has resulted in the use of greater percentage of cracked distillates having poor ignition properties. The ignition properties of diesel fuels can be rated in terms of their cetane number and diesel fuels having low cetane number may have poor ignition properties such as diesel knock, difficulties to start engines in the cold weather and so on. Such diesel fuels need cetane number improving agents. In the 1940s and 1950s alkyl nitrates, alkyl nitrites and organic peroxides were found to be effective cetane number improving additives. Our recent study suggests that free radicals produced from thermal decomposition just before ignition should have an important role to improve their ignition properties. However no studies on the reaction mechanism for improving effect of these additives have been attempted because of complex nature of spontaneous ignition reaction of hydrocarbons. In order to clarify the reaction mechanism for improving effects of cetane number improving agents. We here have attempted to simulate the spontaneous ignition of n-butane as a model compound in the presence of alkyl nitrites as cetane number improving agents.

Hashimoto, K.; Akutsu, Y.; Arai, M.; Tamura, M. [Univ. of Tokyo (Japan)

1996-12-31T23:59:59.000Z

479

Silicon point contact concentrator solar cells  

SciTech Connect (OSTI)

Experimental results are presented for thin high resistivity concentrator silicon solar cells which use a back-side point-contact geometry. Cells of 130 and 233 micron thickness were fabricated and characterized. The thin cells were found to have efficiencies greater than 22 percent for incident solar intensities of 3 to 30 W/sq cm. Efficiency peaked at 23 percent at 11 W/sq cm measured at 22-25 C. Strategies for obtaining higher efficiencies with this solar cell design are discussed. 8 references.

Sinton, R.A.; Kwark, Y.; Swirhun, S.; Swanson, R.M.

1985-08-01T23:59:59.000Z

480

Current Status of Concentrator Photovoltaic (CPV) Technology  

SciTech Connect (OSTI)

This report describes the current status of the market and technology for concentrator photovoltaic (CPV) cells and modules. Significant progress in CPV has been achieved, including record efficiencies for modules (36.7%) and cells (46%), as well as growth of large field installations in recent years. CPV technology may also have the potential to be cost-competitive on a levelized cost of energy (LCOE) basis in regions of high direct normal irradiance (DNI). The study includes an overview of all installations larger than 1 MW, information on companies currently active in the CPV field, efficiency data, and estimates of the LCOE in different scenarios.

Philipps, S. P.; Bett, A. W.; Horowitz, K.; Kurtz, S.

2015-01-01T23:59:59.000Z

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


481

Arontis Solar Concentrator AB | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160 East 300AlgoilEnergyElectric Coop Corp Place:ArmaecArmyArontis Solar Concentrator AB

482

Suspension Hydrogen Reduction of Iron Oxide Concentrates  

SciTech Connect (OSTI)

The objective of the project is to develop a new ironmaking technology based on hydrogen and fine iron oxide concentrates in a suspension reduction process. The ultimate objective of the new technology is to replace the blast furnace and to drastically reduce CO2 emissions in the steel industry. The goals of this phase of development are; the performance of detailed material and energy balances, thermochemical and equilibrium calculations for sulfur and phosphorus impurities, the determination of the complete kinetics of hydrogen reduction and bench-scale testing of the suspension reduction process using a large laboratory flash reactor.

H.Y. Sohn

2008-03-31T23:59:59.000Z

483

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvide Insight for RotorConcentrating Solar Power

484

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvide Insight for RotorConcentrating Solar

485

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvide Insight for RotorConcentrating SolarOptics

486

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive SolarEducation Programs:CRFProvide Insight for RotorConcentrating

487

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentrating Solar Power

488

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentrating Solar

489

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentrating SolarPratt

490

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentrating

491

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentratingSandia Wins

492

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentratingSandia

493

Sandia National Laboratories: Concentrating Solar Power  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners inConcentratingSandiaCSP

494

Sandia National Laboratories: Concentrating Solar Power (CSP)  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners Concentrating Solar Power

495

Sandia National Laboratories: Concentrating Solar Power Systems  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners Concentrating Solar

496

Sandia National Laboratories: Concentrating Solar Power: Efficiently  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0EnergySandia Involves Wind-Farm Owners Concentrating

497

The concrete theory of numbers : Problem of simplicity of Fermat number-twins  

E-Print Network [OSTI]

The problem of simplicity of Fermat number-twins $f_{n}^{\\pm}=2^{2^n}\\pm3$ is studied. The question for what $n$ numbers $f_{n}^{\\pm}$ are composite is investigated. The factor-identities for numbers of a kind $x^2 \\pm k $ are found.

Boris V. Tarasov

2007-07-06T23:59:59.000Z

498

Effects of Gasoline Direct Injection Engine Operating Parameters on Particle Number Emissions  

SciTech Connect (OSTI)

A single-cylinder, wall-guided, spark ignition direct injection engine was used to study the impact of engine operating parameters on engine-out particle number (PN) emissions. Experiments were conducted with certification gasoline and a splash blend of 20% fuel grade ethanol in gasoline (E20), at four steady-state engine operating conditions. Independent engine control parameter sweeps were conducted including start of injection, injection pressure, spark timing, exhaust cam phasing, intake cam phasing, and air-fuel ratio. The results show that fuel injection timing is the dominant factor impacting PN emissions from this wall-guided gasoline direct injection engine. The major factor causing high PN emissions is fuel liquid impingement on the piston bowl. By avoiding fuel impingement, more than an order of magnitude reduction in PN emission was observed. Increasing fuel injection pressure reduces PN emissions because of smaller fuel droplet size and faster fuel-air mixing. PN emissions are insensitive to cam phasing and spark timing, especially at high engine load. Cold engine conditions produce higher PN emissions than hot engine conditions due to slower fuel vaporization and thus less fuel-air homogeneity during the combustion process. E20 produces lower PN emissions at low and medium loads if fuel liquid impingement on piston bowl is avoided. At high load or if there is fuel liquid impingement on piston bowl and/or cylinder wall, E20 tends to produce higher PN emissions. This is probably a function of the higher heat of vaporization of ethanol, which slows the vaporization of other fuel components from surfaces and may create local fuel-rich combustion or even pool-fires.

He, X.; Ratcliff, M. A.; Zigler, B. T.

2012-04-19T23:59:59.000Z

499

NO concentration imaging in turbulent nonpremixed flames  

SciTech Connect (OSTI)

The importance of NO as a pollutant species is well known. An understanding of the formation characteristics of NO in turbulent hydrocarbon flames is important to both the desired reduction of pollutant emissions and the validation of proposed models for turbulent reacting flows. Of particular interest is the relationship between NO formation and the local flame zone, in which the fuel is oxidized and primary heat release occurs. Planar imaging of NO provides the multipoint statistics needed to relate NO formation to the both the flame zone and the local turbulence characteristics. Planar imaging of NO has been demonstrated in turbulent flames where NO was seeded into the flow at high concentrations (2000 ppm) to determine the gas temperature distribution. The NO concentrations in these experiments were significantly higher than those expected in typical hydrocarbon-air flames, which require a much lower detectability limit for NO measurements. An imaging technique based on laser-induced fluorescence with sufficient sensitivity to study the NO formation mechanism in the stabilization region of turbulent lifted-jet methane flames.

Schefer, R.W. [Sandia National Laboratories, Livermore, CA (United States)

1993-12-01T23:59:59.000Z

500

DISSOLVED CONCENTRATION LIMITS OF RADIOACTIVE ELEMENTS  

SciTech Connect (OSTI)

The purpose of this study is to evaluate dissolved concentration limits (also referred to as solubility limits) of elements with radioactive isotopes under probable repository conditions, based on geochemical modeling calculations using geochemical modeling tools, thermodynamic databases, field measurements, and laboratory experiments. The scope of this modeling activity is to predict dissolved concentrations or solubility limits for 14 elements with radioactive isotopes (actinium, americium, carbon, cesium, iodine, lead, neptunium, plutonium, protactinium, radium, strontium, technetium, thorium, and uranium) important to calculated dose. Model outputs for uranium, plutonium, neptunium, thorium, americium, and protactinium are in the form of tabulated functions with pH and log (line integral) CO{sub 2} as independent variables, plus one or more uncertainty terms. The solubility limits for the remaining elements are either in the form of distributions or single values. The output data from this report are fundamental inputs for Total System Performance Assessment for the License Application (TSPA-LA) to determine the estimated release of these elements from waste packages and the engineered barrier system. Consistent modeling approaches and environmental conditions were used to develop solubility models for all of the actinides. These models cover broad ranges of environmental conditions so that they are applicable to both waste packages and the invert. Uncertainties from thermodynamic data, water chemistry, temperature variation, and activity coefficients have been quantified or otherwise addressed.

NA

2004-11-22T23:59:59.000Z