Results 21 to 30 of about 3,223 (188)
Methodology for Porphyrin Isolation by High-Performance Countercurrent Chromatography
Natural 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
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CHIMIA, 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
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Spatial-temporal variations of short-lived mesoscale eddies and their environmental effects
Frontiers 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
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Production Engineering Archives, 2022 This work presents the results of a numerical study of the working processes of burning lignite in a vortex furnace with swirling countercurrent flows. The results of computer simulation of the processes of burning lignite with a moisture content of 30%,
Redko Andriy +7 more
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The Distribution of Particles in the Wall Region of the Cyclone Chamber
MATEC Web of Conferences, 2016 Held cyclone operation analysis at different flow rates. In the absence of dust deposits on the surface of the device in countercurrent conical cyclone particle concentration distribution in the circumferential direction in the wall region is uneven rope-
Razva Aleksandr +3 more
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Numerical Simulation of Heat Transfer Characteristics between Liquid Lithium Lead and Oil [PDF]
E3S Web of Conferences, 2019 The liquid LiPb experimental loop is an essential device for studying the compatibility of LiPb with structural materials of the fusion reactor. The heat exchanger is one of the most important devices of the LiPb loop, which is used to control the ...
Tian Shujian +6 more
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The River–Sea Interaction off the Amazon Estuary
Remote Sensing, 2022 The Amazon River has the highest discharge in the world. Nevertheless, there is still a lack of the research on the interaction between river-diluted water and the ocean.
Di Yu +7 more
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Nuclear Engineering and Technology, 2021 The gas-liquid counter-current flow limitation (CCFL) is closely related to efficient and safety operation of many equipment in industrial cycle. Air-water countercurrent flow experiments were performed in a tube with diameter of 25 mm to understand the ...
Jie Wan +4 more
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Membranes, 2022 The absorption efficiencies of CO2 in hollow-fiber membrane contactors using an ethanolamine (MEA) solvent under both concurrent- and countercurrent-flow operations were investigated theoretically and experimentally. Two-dimensional mathematical modeling
Chii-Dong Ho +5 more
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BioResources, 2013 A grading countercurrent extraction method was used to separate polymeric proanthocyanidins (LPPC) from degreased Larix gmelinii bark, and the purification of LPPC was performed using HP-2MGL resin. The purity of LPPC was 26.37%.
Gui-quan Jiang +4 more
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