Natural product isolation – how to get from biological material to pure compounds

Natural product isolation--how to get from biological material to pure compounds.

Since the last comprehensive review by Otto Sticher on natural product isolation in NPR (O. Sticher, Nat. Prod. Rep., 2008, 25, 517), a plethora of new reports on isolation of secondary compounds from higher plants, marine organisms and microorganisms has been published. Although methods described earlier like the liquid-solid chromatographic techniques (VLC, FC, MPLC, HPLC) or partition chroma...

How to Approach the Isolation of a Natural Product

From Isolation to Empowerment

Background: This study provides a brief review on the history of deaf community and the sign languages in order to describe the position of deaf people around the world in general and in Iranian particular. The research and evaluation of deaf individual from different aspects can result in a better knowledge of sign languages and their significance. Historically, deaf people have been examined ...

how to get rid of calculi?

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How to get preferred readings in natural language analysis

This paper describes a parsing program called KGW+p which is designed for integrating various sorts of knowledge to get most preferred structural descriptions of sentences. The system accepts not only a set of rules specifying constraints which any descriptions of sentences should satisfy, but also preferential rules which are utilized in selecting most preferred descriptions among possible one...