Twitter Google Share on Facebook preparative Thesaurus Related to preparative:Preparative chromatography pre·par·a·tive (prĭ-păr′ə-tĭv, -pâr′-) adj. Serving or tending to prepare or make ready; preliminary. n. Something that prepares for or acts as a preliminary to something fo...
Purification may be preparative or analytical
Transport Phenomena in Zonal Centrifuge Rotors. XIV. Analytical Characterization in Density Gradient Preparative CentrifugesThe centrifuge has had a long and successful history as a means for isolating particles of biological interest. To achieve separations of higher resolutions, two types of ...
Both neuroligins and beta-neurexins have alternatively spliced inserts in their extracellular domains. Using analytical ultracentrifugation, we determined that ... T Idogawa - 《Journal of the Institute of Electronics Information & Communication Engineers》 被引量: 52发表: 1993年 Occurrence of polymeric...
Chemicals and materials N-hexane, ethyl acetate, methanol used for fractions preparation and HSCCC separation were of analytical grade and obtained from the Tianjin Chemical Factory, Tianjin, China. Acetonitrile used for HPLC was of chromatographic grade (Yongda Chemical Factory, Tianjin, China), and...
(ACN)hasbeen knownasoneofthemostsuitablesolventsforanalytical RP-HPLCbecauseofitsexcellentultraviolet(UV)absorp- tion,lessviscosity,lowoxygensolubility,andgreatresolv- ingpower;however,itsapplicationisoftendiscountedfora process-scaleRP-HPLC.Oneofthemajorreasonsisappar- entthatmostoftargetproteinsareelutedfrom...
Centrifugal countercurrent chromatography has been successful in high efficiency analytical separation with a variety of two-phase solvent systems. For example, see Y. Ito and R. L. Bowman, (1975) Anal. Biochem., 65,310, Y. Ito and R. L. Bowman, U.S. Pat. No. 3,856,669, Dec. 24...
Meanwhile, we also isolated the other two constituents, kaempferol and isorhamnetin by semi-preparative HPLC. After systematic optimization of solvent systems, sample concentration and flow rate on analytical Mini-DE centrifuge, the same conditions were scale-up by 50 folds in preparative Midi-DE ...
A device is described which cuts off the bottom of a polyallomer (plastic) centrifuge tube, allowing collection of a preparative gradient from the bottom through a large-diameter opening. The gradient flows downward through a funnel-shaped portal positioned below the tube, and the cross-sectional...
with a pair of two‐phase solvent systems composed of n‐hexane‐dichloromethane‐methanol‐water (3:22:17:8, v/v/v/v) and chloroform‐methanol‐water (4:3:2, v/v/v), both of which were selected by analytical high‐speed CCC. About 1g of crude extract was separated using two ...