Standards classification

GOST 23055-78. Russian standard. "Classification of welded joints by results of radiography testing and corresponding production forms and records". 

The nomenclature of cellular polymers is not standardized classifications have been made according to the properties of the base polymer (22), the methods of manufacture, the cellular stmcture, or some combination of these. The most comprehensive classification of cellular plastics, proposed in 1958 (23), has not been adopted and is not consistent with some of the common names for the more important commercial products. 

A special consideration can be made regarding classification of low-solubility compounds in ER forms. The standard classification is based on the idea that the... 

Adapted, with permission, from D388-99, Standard Classification of Coals by Rank copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. 

The American National Standards Institute (ANSI) has established a voluntary consensus standard for recording basic facts relating to the nature and occurrence of work injuries, ANSI Z16.2.( ) This standard has been in use for more than 30 years and provides a consistent baseline for many report formats. The standard focuses on injury to personnel and presents standard classification categories. If alternate codes are used in incident reports, special effort and notation must be made to avoid confusing the reader. 

This classification, defined in Table 13 with examples, appears very clear and logical in view of the standard classification of isomers. However, the historical development followed a rather curious course. The term constitutional selectivity, unfortunately a somewhat clumsy word which is rarely used, appeared in the literature as late as 1979 -2. This was after an inspiring, but not completely clear, discourse by Hassner on the almost equivalent term regioselectivity which greatly appealed to chemists and was immediately accepted. It is important to note that the now universally accepted definition of stereoselectivity and its subclasses enantio- and diastercoselectivity did not appear in print until as late as 19714. Before that, the term stereoselectivity apparently had the special meaning of the present term diastereoselectivity5. One consequence of this was discussed in the previous section. Furthermore, in the past, the terms selectivity and specificity were usually coupled. The latter term will be discussed in Section 1.2.3.3, but it is currently regarded with suspicion and best avoided. 

Underwriter s Laboratories Classification (uic). This is a standard classification for grading the relative fire hazard of flammable liquids against the following standards ... 

ASTM 2003a. ASTM D388-99el Standard Classification of Coals by Rank. ASTM International. World Wide Web Address http// www.astm.org. 

Figure 18. Typical U.S. coals graphed according to standard classification...

The petroleum industry has not agreed on a standard classification system. Further, the classification of crude oil is of little importance in its production, with the exception that paraffinic crudes can precipitate wax... 

In the standard classification of Scott and Konynenburg [145,146] the simplest case is type I behavior, where liquid-liquid demixing is absent. 

Since the high-temperature assay is used mainly for the examination of gasmaking coals, the range of coke types normally encountered is considerably smaller than that met with in low-temperature assays, and as a consequence, no standard classification of coke types has been drawn up, nor is such a classification so necessary in this case. Nevertheless, a full description of the coke should always be made. 

ASTM D1765-01, Standard Classification Systems for Carbon Blacks used in Rubber Products, 2001. 

In the early 1950s, Benjamin Bloom and colleagues at the University of Chicago developed a framework called the Taxonomy of Educational Objectives that provides standard classifications for the development of educational objectives. The framework addresses educational outcomes in three core areas ... 

There are two main systems used by libraries to classify books the Dewey Decimal system and the Library of Congress system. Libraries differ in the way they employ these systems, especially by adding further numbers and letters after the standard classification marks to signify, say, shelving position or edition number. Enquire at your library for a full explanation of local usage. 

The shell side is provided with a number of baffles to promote high velocities and largely more efficient cross fiow on the outsides of the tubes. Figure 8.4(c) shows a typical construction and flow paths. The versatility and widespread use of this equipment has given rise to the development of industrywide standards of which the most widely observed are the TEMA standards. Classifications of equipment and terminology of these standards are summarized on Figure 8.11. 

---