Subject index groups

The chief aim of this Formula Index, like that of other formula indexes, is to help in locating specific compounds, or even groups of compounds, that might not be easily found in the Subject Index, or in the case of compounds in tables or of many complex coordination compounds, not to be found at all in the Subject Index. All specific compounds, or in some cases ions, with definite formulas (or even a few less definite) are entered in this index, whether entered specifically in the Subject Index or not. As in the latter index, boldface type is used for formulas of compounds or ions whose preparations are described in detail, in at least one of the references cited. 

The Formula Index, as well as the Subject Index, is a Cumulative Index for Volumes 26-30. The Index is organized to allow the most efficient location of specific compounds and groups of compounds related by central metal ion or ligand grouping. 

The entries in the subject index are limited to the important topics for each substance or group substances mentioned only incidentally are not included. 

G. Herzberg, Molecular Spectra and Molecular Structure. III. Electronic Spectra and Electronic Structure of Polyatomic Molecules, Van Nostrand, New York, 1966. See Subject Index for tables for individual symmetry groups. (In the text of the present article this book is often referred to as Herzberg s Polyatomics.)... 

This book is based predominantly on the patent literature and provides how to data regarding the production, purification, and application of commercial enzymes. Coverage is not limited to food applications, and 70 subjects are grouped as Enzymes, Enzymatic Processing, Enzyme Stabilization, Polymer-Enzyme Products, Cell Culture, Protein Analysis, Nucleic Acids etc.. Amino Acids, Peptide Synthesis, and Applications. Indexing includes U.S. patent number, company and patent assignee, inventor, and subject. 

The authors of individual chapters are top specialists in their areas. They comprise an international group of scientists and practitioners (Great Britain, Italy, The Netherlands, Poland, Russia, Sweden, Switzerland, and the U S.A.) from universities and companies that are advanced in the technology of structured catalysts. The editors express their gratitude to all of the contributors for sharing their experience. The editors also appreciate the administrative assistance of Mrs. Qwen Klis and the help of Ms. Annelics van Diepen in the preparation of the subject index. 

The year 1925 brought important changes and improvements in the subject index and the Richter type formula index. There were an increased concentration and a classification into main subject groups and subgroups. Key terms were printed in heavy black type an especially desirable feature was the addition in parentheses of all synonyms and alternate names of chemical compounds next to their main entry, in both the subject and formula indexes. 

Entries in the subject index are restricted to topics which are basic to the substances or groups under discussion, incidental mention does not necessarily merit inclusion. Literature references are listed in the order in which they appear, and the abbreviations used for journals are those found in Chemical Abstracts List of Periodicals. 

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