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Topic: Droplet


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In the News (Wed 15 Feb 12)

  
  Fiber Supported Droplet Combustion Investigation-2 (FSDC-2)
Methanol-dodecanol droplet mixtures experienced staged combustion in which the methanol predominately burned first and became largely depleted in a surface layer of the liquid; then, the flame contracted and the droplet shattered as a result of vapor growth within it.
Speculation on the cause of this variation is that soot shells form between the droplet surface and the flame and interact with the local flow and temperature field.
N-heptane and n-decane single-droplet combustion in a slow convective flow and flame shapes: The objective is to obtain data on droplet burning rates in a slow, well-defined convective field and to observe the behavior of the soot shell.
zeta.lerc.nasa.gov /expr3/fsdc2.htm   (2182 words)

  
 droplet   (Site not responding. Last check: 2007-10-29)
In fact, as the day went on, it grew darker and darker, loud claps of thunder shook the cloud, and the Droplet felt as if he were getting so heavy he could hardly move.
Suddenly, the Droplet felt himself falling from the cloud.
And so begins the adventure of Droplet, the water molecule, as he enters the great water cycle- condensation, precipitation, infiltration, runoff, and evapotranspiration-and starts his journey home.
kids.earth.nasa.gov /droplet.html   (320 words)

  
 Reducing Spray Drift, Bulletin 816-00, Droplet Size
In general the longer the droplets remain airborne, the greater the chances they are going to be carried by wind away from the application site.
Small spray droplets are more susceptible to drift than the larger droplets because they tend to remain airborne much longer than the larger droplets.
Droplet size where drift potential becomes insignificant depends on wind speeds, but lies in the range of 150 to 200 microns for wind speeds of 1 to 9 miles per hour (Bode, 1984).
www.ag.ohio-state.edu /~ohioline/b816/b816_6.html   (460 words)

  
 Droplet Technology, Inc.
Droplet develops, markets, and supports a powerful new video service platform that provides the world's leading combination of image quality, power consumption, and cost for a broad range of lucrative new broadband video products and services over wireless and wireline networks.
Droplet's customers are leading providers of mobile multimedia services and handsets, video security and safety systems, and broadband multimedia products and services.
Droplet's senior team brings over 65 years of experience in the fields of image processing and over-the-air wireless applications delivery.
www.droplet-tech.com   (131 words)

  
 Live Cell Analysis and Targeting of the Lipid Droplet-binding Adipocyte Differentiation-related Protein -- ...
Lipid droplets were stained with oil red O (Sigma) in paraformaldehyde-fixed cells as described previously (11, 12).
ADRP is a component of lipid droplets found in a broad range of cultured cells and tissues.
Formation of lipid droplets is considered to occur by a budding process at the ER (1, 40).
www.jbc.org /cgi/content/full/278/18/15998   (7224 words)

  
 High Altitude UAV Droplet Heat Exchanger   (Site not responding. Last check: 2007-10-29)
The spatial characteristics of the droplet field are determined by the size and area distribution of orifices that supply the liquid flow and the distortion of the droplet field as it interacts with the gas flow field.
The velocity of the droplets is the velocity of the liquid jet accelerated or decelerated by the drag of the surrounding gas.
Droplet drag was calculated to determine how quickly the droplet is accelerated up to the gas speed in the DHX at atmospheric conditions, and to determine the effects of turbulence and recirculation flows on the droplet size chosen.
www.tvu.com /HAltUAVDHXweb.htm   (18319 words)

  
 Droplet + Equator   (Site not responding. Last check: 2007-10-29)
Droplet Technology, Inc. is a leading provider of video compression solutions that deliver high quality compression and decompression of digital video for personal entertainment and portable consumer applications.
Droplet’s solutions are bandwidth efficient and scalable for varying memory, processing, power and storage budgets.
Droplet’s OEM customers benefit from delivering high quality video to consumers with uniquely low power and memory requirements in their designs.
www.droplet-tech.com /news/Equator_06062001.html   (789 words)

  
 Droplet Configuration   (Site not responding. Last check: 2007-10-29)
The configuration of the liquid crystal droplets in a polymer matrix is the focus of much current research.
The axial configuration of the liquid crystal droplets also occurs when the molecules are oriented perpendicular to the droplet wall, but only when there is weak surface anchoring.
When an electric field is applied, however, the molecules within the droplets align along the field and have corresponding optical properties.
plc.cwru.edu /tutorial/enhanced/files/pdlc/droplet/droplet.htm   (245 words)

  
 Water droplets make an impact (May 2001) - Physics World - PhysicsWeb
The physics of bouncing water droplets underlies a wide range of industrial applications from crop spraying to ink-jet printing, and continues to fascinate after 200 years of research.
When the molecular interactions between the water and the surface are repulsive, water droplets landing on these so-called hydrophobic solids try to minimize their contact with the surface.
Rebounding water droplets are somewhat similar to the problem of bouncing solid spheres that was first analysed in detail by the German physicist Heinrich Hertz in the early 1880s.
physicsweb.org /article/world/14/5/8   (3603 words)

  
 DCE   (Site not responding. Last check: 2007-10-29)
Importance: The combustion of fuel droplets is an important part of many operations, such as the heating of furnaces for materials processing or home heating, power production by gas turbines, and combustion of gasoline in a car¹s engine.
The injectors then will be retracted slightly to stabilize the droplet and rapidly removed to deploy the droplet in the field of view of the optical measurement apparatus.
After ignition, the igniters will be retracted, and the droplet and its flame will be observed as combustion occurs in the selected atmosphere, away from disturbing influences of walls.
liftoff.msfc.nasa.gov /Shuttle/msl/science/dce.html   (445 words)

  
 Pubs.GISS: Abstract of Han et al. 1998   (Site not responding. Last check: 2007-10-29)
Cloud droplet concentration is a very important parameter in model studies.
The survey shows the expected increase of column droplet concentration between ocean and continental clouds and in tropical areas during dry seasons where biomass burning is prevalent.
Therefore, column droplet concentration is demonstrated as a good indication of available CCN populations in certain areas.
pubs.giss.nasa.gov /abstracts/1998/HanRossowC2.html   (173 words)

  
 Numerical Simulation of Metal-Droplet Deformation and Solidification
The deformation and spreading of fully liquid droplets as they impact onto a flat or non-flat substrate was considered first.
If a fully liquid droplet impinging onto a flat substrate leads to good contact between the splat and the substrate, multiple fully liquid droplets striking simultaneously onto other flattening, fully liquid splats cause ejection and rebounding of the liquid, as well as formation of voids within the liquid.
When solidification is included, Tungsten droplets are found to spread and solidify into splats with diameters 1.6 to 3.8 times the initial droplet diameter within a time of 0.12 to 0.44 micro-s.
www.eng.uci.edu /rangel/mat-simulation/index.html   (948 words)

  
 Tilsner: Droplet   (Site not responding. Last check: 2007-10-29)
The Fine Line, located on First Avenue in downtown Minneapolis, is a great venue with an excellent sound system, a good bar, and plenty of space.
Droplet's album, On the face of the earth, is now available.
You are encouraged to freely link to any page on tilsner.net and to take advantage of our webfeed generator, which allows you to place dynamically-updating headlines from our site onto your own.
tilsner.net /news/droplet.shtml   (234 words)

  
 Equator/Droplet to Offer Real Time Compression At MPEG-2 Quality
Droplet's technology provides real time, high picture quality analog video encoding and decoding at low CPU utilization rates and can be implemented in both hardware and software.
By incorporating Droplet's wavelet-based, technology in Equator's software-programmable, MAP-CA chip, the two companies will provide OEM customers with an affordable, scalable, bandwidth-efficient broadband system to keep pace with evolving market and technology demands.
Droplet Technology, Inc. delivers high quality compression and decompression of digital video for personal entertainment and portable consumer applications.
www.dtvprofessional.com /2001/06_jun/news/equator_pvr.htm   (426 words)

  
 NASA/ MSL-1 Combustion Physics - how?
DCE will be conducted in the specially designed Droplet Combustion Apparatus, an enclosed chamber in which single droplets of heptane will be burned in an atmosphere composed of a mixture of helium and oxygen.
The droplet is formed by injecting the heptane through two injectors on opposite sides of the test platform within the chamber.
To burn bigger droplets, even in microgravity, we need to have some kind of supporting mechanism for the fuel, otherwise the burning drop may move around, hit the walls of the container, or move out of the camera's field of view.
science.nasa.gov /msl1/combustion_how.htm   (1025 words)

  
 Binary Droplet Collisions
Collisions between droplets are fascinating and complicated processes in fluid dynamics.
One goal of present investigations is the classification of the outcome of binary droplet collisions by correlations of the dimensionless numbers.
Up to now binary droplet collisions were mainly studied experimentally or by greatly simplified theoretical models.
www.uni-stuttgart.de /UNIuser/itlr/gallery/bindrop/page.html   (472 words)

  
 FSDC   (Site not responding. Last check: 2007-10-29)
The fiber-support technique enables researchers to position the droplet within the view of diagnostic cameras with relative ease and to measure fundamental burning characteristics, such as burning rates, flame positions, and extinction diameters, for a variety of fuels.
Once the fuel is dispensed, the needles will be withdrawn rapidly, leaving the droplet suspended on the fiber.
The first camera provides the backlit view of the droplet from which the burning rate and the extinction diameter of the fuel are obtained.
liftoff.msfc.nasa.gov /Shuttle/msl/science/fsdc.html   (273 words)

  
 Quark Matter Droplet Formation In Neutron Stars (ResearchIndex)   (Site not responding. Last check: 2007-10-29)
Abstract: The formation rate of quark matter droplets in neutron stars is calculated from a combination of bubble formation rates in cold degenerate and high temperature matter.
Results show that droplets form only in the core of neutron stars shortly after supernova collapse, where pressures and temperatures are high, and for sufficiently small interface tension between nuclear and quark matter.
0.6: On the Formation/dissolution of Equilibrium Droplets - Biskup, Chayes, Kotecky (2002)
citeseer.csail.mit.edu /4147.html   (197 words)

  
 The housekeeping gene xanthine oxidoreductase is necessary for milk fat droplet enveloping and secretion: gene sharing ...
Another portion of the fat droplet is occupied by the unidentified membrane structure as seen in A and B (white arrowhead).
Fat droplet synthesis occurs de novo in the ER from which fat droplets are released as microlipids surrounded
the microlipid droplets to the apical membrane of the mammary
www.genesdev.org /cgi/content/full/16/24/3223   (6749 words)

  
 Delft Solids Solutions is a testing laboratory for analysis of porous and nonporous solids, powders and gases. ...
Sizing Particle and droplet size are basic features that influence the properties and performance of solids, emulsions and sprays.
Since the rays enter the particle at different angles, the optical paths to a common arbitrary point on the detector differ; the light waves are shifted relatively to each other.
The technique is used for determination of droplet size and velocity distribution in sprays and nozzles from 0.5 to 90 µm.
www.solids-solutions.com   (1550 words)

  
 CD Baby: DROPLET: On The Face Of The Earth   (Site not responding. Last check: 2007-10-29)
droplet is a Twin Cities based pop-rock band fronted by singer-songwriter Chrissy Mitchell.
The last several years have seen Chrissy's musical journey develop from intimate solo performances on the coffee bar circuit to droplet's full band shows, rocking some of the med-sized venues in the Twin Cities.
The genre "pop-rock" doesn't really begin to capture the variety of musicial influences that droplet's members have woven into the richly-varied songs and powerful performances that set apart the coming Fall 2001 CD -- from Neil Young, the Rolling Stones, and Blondie, to Dead Can Dance, the Beach Boys, and Hindustani classical music.
www.cdbaby.com /cd/droplet   (426 words)

  
 Modelling of Droplet Solidification on a Flat Surface   (Site not responding. Last check: 2007-10-29)
An existing model of the deformation and solidification of a single droplet impinging on a cold surface (Fig.
In the latter case, the variations of the final splat size versus the solidification constant exhibit a non-monotonic behavior.
Delplanque, J.-P. and Rangel, R.H., "An Improved Model for Droplet Solidification on a Flat Surface", Submitted for publication in The Journal of Materials Science, 1996.
www.eng.uci.edu /rangel/mat-madejski/index.html   (352 words)

  
 Pubs.GISS: Abstract of Han et al. 1994   (Site not responding. Last check: 2007-10-29)
The height dependencies of cloud droplet radii in continental and marine clouds are also consistent with differences in the vertical profiles of aerosol concentration.
Significant seasonal and diurnal variations of effective droplet radii are also observed, particularly at lower latitudes.
Variations of the relationship between cloud optical thickness and droplet radii may indicate variations in cloud microphysical regimes.
pubs.giss.nasa.gov /abstracts/1994/HanRossow.html   (201 words)

  
 Acquisition of Disease
Droplet transmission is a form of contact transmission.
Note that to be considered droplet transmission the mucous droplet must still be traveling with the velocity imparted on it upon leaving the mouth.
Airborne transmission requires greater organismal durability than droplet transmission simply because of the length of time the microorganism is exposed to the air, before infecting a new host, is longer.
www.mansfield.ohio-state.edu /~sabedon/biol2050.htm   (1656 words)

  
 Quantitative Flow Visualization
Tiny ink droplets are ejected out of the inkjet cartridge to form the print pattern when they impinging on the paper.
Due to the capillary instability, the ejected jet column breaks up into a primary droplet and a stream of small droplets (satellite droplets) as shown.
A jet is formed by flow issuing from a nozzle into ambient fluid which can be at rest (a free jet) or moving (a coflowing or counterflowing jet) or tangential to a solid surface (a wall jet).
www.eng.fsu.edu /~shih/succeed/flow-vis.htm   (995 words)

  
 Antiatherogenic activity of fungal beauveriolides, inhibitors of lipid droplet accumulation in macrophages -- Namatame ...
Antiatherogenic activity of fungal beauveriolides, inhibitors of lipid droplet accumulation in macrophages -- Namatame et al.
of lipid droplet accumulation in primary mouse peritoneal macrophages.
Inhibition of Lipid Droplet Accumulation in Macrophages by Beauveriolides.
www.pnas.org /cgi/content/full/101/3/737   (3810 words)

  
 EPUK Learing Curve | Generating Photoshop File Info Droplet   (Site not responding. Last check: 2007-10-29)
Photoshop droplets can only be made with stored actions that came with the installed programme or actions that you have recorded and saved to the actions folder from Photoshop 6 onwards.
The Droplet dialog box opens and for the first time appears a little daunting.
The first thing to do is click on the top most Choose box to name the droplet and save it in the Photoshop Droplet Folder.
www.epuk.org /curve/andrews/fileinfo.html   (916 words)

  
 Cloud-droplet ingestion in engine inlets with inlet velocity ratios of 1.0 and 0.7   (Site not responding. Last check: 2007-10-29)
The paths of cloud droplets into two engine inlets have been calculated for a wide range of meteorological and flight conditions.
The amount of water in droplet form ingested by the inlets and the amount and distribution of water impinging on the inlet walls are obtained from these droplet-trajectory calculations.
In both types of inlet, a prolate ellipsoid of revolution represents either part or all of the forebody at the center of an annular inlet to an engine.
naca.larc.nasa.gov /reports/1957/naca-report-1317   (180 words)

  
 Cloud Droplet Spectra   (Site not responding. Last check: 2007-10-29)
Theoretical predictions for the growth of a population of cloud droplets by vapor diffusion in a rising, undiluted cloud parcel gives a narrow, monodisperse cloud droplet spectra.
Measurements were obtained in growing cumulus clouds and droplet sizes were small, in most cases less than 20 microns in diameter.
Baker and Latham [1992] showed with a semi-analytical model that the liquid water content, effective radius and optical depth in ice free entraining cumulus clouds growing in surroundings typical of Hawaii and Montana were all sensitive to the entrainment scale.
www.agu.org /revgeophys/rasmus00/node2.html   (356 words)

  
 A Model for a Spreading and Melting Droplet on a Heated Substrate   (Site not responding. Last check: 2007-10-29)
The trijunction dynamics, as well as the contact angle, contact line position, and other dynamic quantities for the spreading and melting droplet, are predicted by the model and are compared to an isothermally spreading liquid droplet whose dynamics are controlled exclusively by the contact line.
We find that in general the differences between the dynamics of a spreading and melting droplet and that of an isothermally spreading droplet increase as ${\cal K}_T$ increases.
We observe that the presence of the solid phase in the spreading and melting configuration tends to inhibit spreading relative to an isothermally spreading droplet of the same initial geometry.
epubs.siam.org /sam-bin/dbq/article/36718   (333 words)

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