Results 21 to 30 of about 4,457,222 (205)

Investigation on the Performance of CO2 Absorption in Ceramic Hollow-Fiber Gas/Liquid Membrane Contactors

open access: yesMembranes, 2023
The absorption efficiencies of CO2 in ceramic hollow-fiber membrane contactors using monoethanolamine (MEA) absorbent under both cocurrent- and countercurrent-flow operations were investigated theoretically and experimentally; various MEA absorbent flow ...
Chii-Dong Ho   +4 more
doaj   +1 more source

Dispersed Mobile-Phase Countercurrent Chromatography

open access: yesSeparations, 2016
Countercurrent distribution based on liquid–liquid partition is a powerful separation method with minimal incurrence of loss of solutes, but its industrial application has been limited by cumbersome shifting of immiscible solvents.
Timothy Yiu-Cheong Ho, Hong Xue
doaj   +1 more source

Countercurrent distribution of inositol lipids of plant seeds

open access: yesJournal of Lipid Research, 1969
The inositol lipids of plant seeds consist of phosphatidyl inositol, the phytoglycolipids, and a previously uncharacterized ceramide-phosphate-polysaccharide. These three species have been separated from each other and from the common glycerophosphatides
H.E. Carter, A. Kisic
doaj   +1 more source

Die Trennung von Carotinoidgemischen durch Gegenstromextraktion (II)

open access: yesCHIMIA, 1973
Countercurrent distribution has been used for the separation of β-carotene and its epoxides without rearrangement reactions. The separation of an extract from Carica papaya shows that this method is suitable for the detection of carotenoids which occur ...
H. Pfander   +3 more
doaj   +1 more source

Analytical, Preparative, and Industrial-Scale Separation of Substances by Methods of Countercurrent Liquid-Liquid Chromatography

open access: yesMolecules, 2020
Countercurrent liquid-liquid chromatographic techniques (CCC), similar to solvent extraction, are based on the different distribution of compounds between two immiscible liquids and have been most widely used in natural product separations.
Artak A. Kostanyan   +2 more
doaj   +1 more source

Exploring the plankton bacteria diversity and distribution patterns in the surface water of northwest pacific ocean by metagenomic methods

open access: yesFrontiers in Marine Science, 2023
The study of marine microbial communities is crucial for comprehending the distribution patterns, adaptations to the environment, and the functioning of marine microorganisms.
Yafei Wang   +3 more
doaj   +1 more source

Inferring cetacean population densities from the absolute dynamic topography of the ocean in a hierarchical Bayesian framework. [PDF]

open access: yesPLoS ONE, 2015
We inferred the population densities of blue whales (Balaenoptera musculus) and short-beaked common dolphins (Delphinus delphis) in the Northeast Pacific Ocean as functions of the water-column's physical structure by implementing hierarchical models in a
Mario A Pardo   +7 more
doaj   +1 more source

Methodology for Porphyrin Isolation by High-Performance Countercurrent Chromatography

open access: yesNatural Product Communications, 2014
Countercurrent chromatography is a versatile technique for the isolation of a wide variety of plant substances. However, little attention has been devoted to the application of this technique for the isolation of porphyrins.
Amaro C. Ramos   +4 more
doaj   +1 more source

Die Verteilung von hochmolekularen Stoffen und von Zellfragmenten in flüssigen Phasenpaaren zur Fraktionierung

open access: yesCHIMIA, 1972
The possibilities and the problems of fractionating high molecular substances and cell fragments with liquid phase pairs are discussed. Low molecular substances are now currently separated by countercurrent distribution.
P. von Tavel
doaj   +1 more source

Spatial-temporal variations of short-lived mesoscale eddies and their environmental effects

open access: yesFrontiers in Marine Science, 2023
Mesoscale eddies (MEs) affect the transport and redistribution of oceanic matter and energy. The long-lived and long-distance propagation of individual eddies has garnered extensive attention; however, short-lived MEs (< 7 days) have been widely ...
Shidong Liu   +11 more
doaj   +1 more source

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