Configuration, definitions

In addition to identification of flavan-3-ols and derivatives from natural sources (Table 11.3, Figure 11.3-Figure 11.5, Figure 11.7, and Figure 11.8), several synthetic studies and efforts at establishing absolute configuration have been reported. The modified Mosher method has been successfully applied to configurational definition of the flavan-3-ols and 4-arylflavan-3-ols, and the A-type proanthocyanidins. " The first stereoselective synthesis of a series of flavan-3-ol... 

In the Slater-Condon [480] theory the centers of gravity (baricenters) of different terms arising from a given configuration (definite L and S values) can be expressed as multiples of the Fk integrals. 

Manual entry of data encompasses tests ranging from simple pass/ fail tests or sample descriptions through recording quantitative results from complex assays depending upon the configurable definition of the test. All prompts issued by the system can be quickly and easily changed on-line to suit the requirements of individual laboratories. 

Configuration Definition Management Software Components Hadware Components... 

According to configuration definition, three groups of hquid membranes are usually considered (see Fig. 1.1) bulk (BLM), supported or immobilized (SLM or ILM), and emulsion (ELM) liquid membrane transport. Some authors add to these definitions polymeric inclusion membranes, gel membranes, dual module hollow-fiber membranes, but, to my opinion, the first two types are the modifications of the SLM and the third is the modification of BLM. It will be discussed in detail in the respective chapters. 

The aim of this chapter is to provide an overview of the instrumentation currently available for the mass analysis of MALDI ions. It is not intended as an exhaustive treahse on each instrument, and consequently if more detail is required the reader should examine the Usted reference material in detail. In the first sections of the chapter, the use of lasers for MALDI is discussed, and how they are coupled to the mass spectrometer, together with details of vibrational cooling and tandem mass spectrometry of MALDI ions. This is followed by a description of the different mass analyzer designs, with emphasis placed on commercially available instrument configurations. Definitions of aU acronyms, as well as technical descriptions of terms (such as peak centroid and resolving power) are included at the end of the chapter. 

---