• This study describes how the information of the sedimentation coefficient distribution can be combined with the diffusion coefficient distribution obtained from flow-field flow fractionation to yield the buoyant molar mass of the oligomers in the mixture, extending the information content of each individual analytical method. (uni-konstanz.de)
  • A graph of detection signal vs. time from an FFF separation, in which various substances present in a fluid are separated based on their flow velocities under some applied external field, such as an flow, centrifugal, thermal or electric field. (wikipedia.org)
  • The Postnova modular FFF platform can be configured for any single or combination of several of the five FFF subtechniques - Asymmetric Flow FFF (AF4), Hollow-Fibre Flow FFF (HF5), Electrical FFF (EAF4), Centrifugal FFF CF3) and Thermal FFF (TF3). (norlab.com)
  • Thermal field-flow fractionation (ThFFF) is shown to be capable of separating and characterizing pure micelles prepared from two types of polystyrene - polyethylene oxide block copolymers (PS-PEO), of different PS block sizes but similar PEO block sizes. (sun.ac.za)
  • It is designed for PhD students and scientist who are working the field of colloid and nanomaterial analysis. (acenano-project.eu)
  • Fractionation is a separation process in which a certain quantity of a mixture (gas, solid, liquid, enzymes, suspension, or isotope) is divided during a phase transition, into a number of smaller quantities (fractions) in which the composition varies according to a gradient. (wikipedia.org)
  • indeed the field is notable for the unusual rock composition. (wikipedia.org)
  • Accurate size distributions with true ensemble representation require fractionation + independent, on-line determination of size. (wyatt.com)
  • Isotope hydrology is a field of hydrology that uses isotopic dating to estimate the age and origins of water and of movement within the hydrologic cycle. (wikipedia.org)
  • Another application involves the separation of groundwater flow and baseflow from streamflow in the field of catchment hydrology (i.e. a method of hydrograph separation). (wikipedia.org)
  • The new era of separation science will require working at the intersection of numerous fields of chemistry, engineering, materials science, physics, and information science. (nap.edu)
  • Electrical Field Flow Fractionation (ElFFF) is a sub method in the field flow fractionation (FFF) family that relies on an applied voltage on the channel walls to effect a separation. (mdpi.com)
  • The ICP can be retained in the quartz torch because the flow of gas between the two outermost tubes keeps the plasma away from the walls of the torch. (wikipedia.org)
  • Gullies and slope lineae along cliffs and crater walls suggest that flowing water continues to shape the surface of Mars, although to a far lesser degree than in the ancient past. (wikipedia.org)
  • In this paper, the separation of whole blood, plasma, and serum is shown using asymmetric flow field-flow fractionation (AF4) with a minimum of sample pre-treatment. (springer.com)
  • A second flow of argon (around 1 liter per minute) is usually introduced between the central tube and the intermediate tube to keep the plasma away from the end of the central tube. (wikipedia.org)
  • This gas flow passes through the centre of the plasma, where it forms a channel that is cooler than the surrounding plasma but still much hotter than a chemical flame. (wikipedia.org)
  • Blood fractionation refers generally to the process of separation using a centrifuge (centrifugation), after which three major components can be visualized: plasma, buffy coat and erythrocytes. (wikipedia.org)
  • Modern systems are using pumps instead of flow controllers to provide constant flow rates in a wide flow range with minimum of tubing and a metal free sample path. (wikipedia.org)
  • As samples are injected directly without preparation, no special sample treatment is necessary, allowing the fractionation of complex particulate. (postnova.com)
  • He observed that a vertical electric field had developed in a suspension of glass beads in water, as the beads were settling. (wikipedia.org)
  • The sum of all of the dipoles generates an electric field which is called sedimentation potential. (wikipedia.org)