General Terminology

The term light is perhaps one of the most misused terms in photochemistry. This problem has also plagued pharmaceutical photochemistry and chemistry throughout the last century. Many of today s scientists were taught about UV light. 

The first draft of the ICH document, from ICH1, used the term Tight stability in its title. At ICH 2 (16), the inappropriateness of this term was brought to the attention 

Wavelength (nm) Photopic Luminous Efficiency / X) Wavelength (nm) Photopic Luminous Efficiency V( i) 

It should also be noted that acceptance of the definition for visible light given in practically all books and standards excludes UV radiation. It is therefore recommended that this term only be used when referring to the 390 to 800 nm region of the electromagnetic spectrum. 

It is well to note that not all UV-A, UV-B and UV-C, and VIS lamps are equivalent. This subject will be discussed in further detail in Chapter 6 of this book. 

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This useful and general terminology has been applied quite widely in the macrocycle field and in other areas as well. It is obvious from the name that a host is any molecule... 

A variety of terms are used in the statistical literature to define and describe the general concept of imperfect knowledge. Many authors prefer specific terms that are explicitly defined, while others use more general terminology that can be applied in a broad context. Two terms that are of general use are (Suter and Barnthouse 1993) ... 

Schulte, M, and Epping, A. (2005) Fundamentals and general terminology, in Preparative Chromatography. 1st edn (ed. H. Schmidt-Traub), Wiley-VCH Verlag GmbH, Weinheim, pp. 9-49. 

Let us now discuss in detail the analysis of chemical interference as the event giving the areas of its display in various forms with particular examples. Therefore, let us use the general terminology, common for characterization of conjugated processes. 

As far as genuine enantioselective processes are concerned, one first needs to specify this term because in traditional mass spectrometry one can only distinguish diastereoisomeric reactions. In analogy to the general terminology, we therefore define an enantioselective gas-phase reaction as a process in which a chiral ion reacts with a chiral neutral molecule in a diastereoselective manner. As mass spectrometry is insensitive to the absolute configuration, only one of both partners needs to be varied, e.g., reaction of a chiral ion with the R- and S-enantiomers of the neutral reagent or vice versa. 

Fig. 4 General approach of the bioreactive MALDI mass spectrometer probe tips. Goid piated probe tips are activated through the covalent attachment of enzymes (the general terminology of Au/enzyme is used to indicate the nature of the activated surfaces). The probe tips are then used for protein characterization by direct appiication of the analyte and time given for digestion. The digestions are stopped with the addition of a MALDI matrix, the reaction product-matrix mixture aiiowed to dry, and the probe tips are inserted into the mass spectrometer for MALDI-TOF analysis.

Fig. 1 General terminology of tooling (sets of upper and lower punches and dies) for rotary tablet presses.

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