nutrients
发表于 2025-3-25 04:28:50
Peter J. Houghton,Amala Ramand materials systems.Integrates materials engineering, physicThis extensive knowledge base provides a coherent description of advanced topics in materials science and engineering with an interdisciplinary/multidisciplinary approach. The book incorporates a historical account of critical developments
同音
发表于 2025-3-25 09:43:12
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借喻
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Fresco
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走调
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Overview: 978-1-4613-7662-0978-1-4615-5809-5
Narcissist
发表于 2025-3-26 02:35:08
Chromatographic fractionation procedures,Chromatographic procedures are the most diverse and the most widely used techniques in the fractionation of extracts. There is no doubt that they have made possible the isolation of many naturally occurring compounds.
exophthalmos
发表于 2025-3-26 04:50:43
Layer chromatography,Layer chromatography is useful in fractionation, not only as a final process for purification of comparatively small amounts of almost pure compounds, but also as a method for designing some types of column separation and also for monitoring the composition of fractions obtained by other fractionation processes.
冰雹
发表于 2025-3-26 11:07:55
General methods,The methods used in the extraction, fractionation and isolation of compounds from natural sources have been described in Chapters 3–7. A knowledge of certain basic general techniques is useful, and these are described in more detail here.
Awning
发表于 2025-3-26 14:43:05
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说明
发表于 2025-3-26 20:28:42
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