Technical Terms and Symbols

As for the technical terms, their symbols, and units used in this book, the Editor asked the authors to follow the recommendations of the Physical and Biophysical Chemistry Division of the International Union of Pure and Applied Chemistry (lUPAC), which were published as Quantities, Units and Symbols in Physical Chemistry in 2007 (known as the Green Book). 

A survey of computer use in university courses has been carried out by Miles and Francis 149). Due to poor response rate of a Web-based questionnaire, the findings were skewed toward those faculty members who were using computers in their course. The most widely used application among the respondents was the spreadsheet, while the use of molecular modeling, and symbolic mathematics software lagged behind. The authors recommended that teachers should develop more computer-based activities, exploit fully the Web resources, and transfer effectively technical skills. They also provided a list of relevant Web sites, but in the time elapsed since that publication, the currently available Web material must be greatly enhanced, both in terms of number of materials available and in terms of quality of content. 

The rate at which a component moves will depend on its equilibrium concentrations in mobile and stationary phases. By the technical term equilibrium concentrations we are essentially referring to the solubilities of that component in each of the phases. The ratio of these concentrations is known as the distribution coefficient (symbolized D). 

Knowledge of referents for specific symbols (verbal and non-verbal) e.g. to define technical terms. 

A number of special units and technical terms are used in work with radioactive isotopes. The old unit for the amount of an isotope was the curie (symbol Ci), which is defined as the amount producing exactly 3.7 x 10 ° disintegrations per second. In the preceding example, we have seen that this is approximately the number of disintegrations produced per second by 1 gram of radium. In 1975 the curie was replaced by the becquerel (Bq) which is defined as the amount of radioactive substance giving one disintegration per second. Thus 1 Bq = 1 s and 1 Ci = 3.7 x 10 ° Bq. 

Part III. Appendices Appendix 1 Glossary of technical terms Appendix 2 Technical symbols and abbreviations Appendix 3 Acronyms Appendix 4 Conversion factors Appendix 5 State regulatory agencies and codes Appendix 6 Publications of the compressed gas association Index... 

On gopcpcoSevTag as a technical term in so-called Gnostic baptism, see Wayne Meeks, Image of the Androgyne Some Uses of a Symbol in Earliest Christianity, History of Religions 13/3 (1974) 191, and Turner, Ritual, 153. 

P G s reward and recognition system is best exemplified by our dual-ladder system for promotion. Employees in R D will choose, early in their career, whether to advance as a technical expert or as a manager of science. Both are equally valued, and this is important, so there is no stigma associated with one choice or the other. The management path for promotion is traditional and basically resembles all other industrial corporations, as well as the tenure track promotion system in academia. But the key here is that such a promotion system is public, not personal and private. It goes beyond a handshake and a raise and awards titles to individuals selected for advancement. Our titles include such terms as section head, associate director, director, company officers, etc. Others may use different titles, but the title used is far less important than its symbol, namely, the outward recognition of personal success. 

The nomenclature in the field of explosives and war chemicals is perplexing. Most of the chief explosives are known under many different names and designations, including the correct chemical name, chemical synonyms, American and foreign trade names, and warfare symbols. In literature on the subject sometimes one term is used, and sometimes another. Unless one knows the meaning of all of the terms, it is often necessary to make a search for information and this, in the literature on explosives, is a time-consuming procedure. For instance, in a technical article on detonators, a chemist may find a reference to Dinol. He knows this is a trade name and if he does not know the chemical composition of the product and wishes to find it out, he has to know its correct chemical name. He may spend quite a bit of time before he establishes the fact that Dinol is the commercial term for dinitrodiazophenol. 

It was the declared aim of the laboratory to provide an eiEfective service for users and to make life as easy as possible for the inexperienced user. To this end, EDSAC was programmed from the start in a symbolic assembly language, so that a program could be written out in terms of meaningful alphabetic characters, to be punched onto paper tape, read in, and converted automatically to binary machine instructions. They also made a film to show how to use EDSAC and stills from this film have been published, At a technical level the idea of microprogram control in relation to computer design seems to have first been expounded by Wilkes in 1951. 

Chemistry (lUPAC) titled "Classification and Nomenclature of Elec-troanal)d icar Techniques" [1], "Recommended Terms, Symbols, and Definitions for Electroanal Aical Chemistry" [2], and "Recommended Terms, Symbols, and Definitions for Electroanal d ical Chemistry (Recommendations 1985)" [3] and in Compendium of Analytical Nomenclature The Orange Book [4]. Some special articles characterize electrochemical sensors [5]. A special lUPAC technical report, "Electrochemical Biosensors Recommended Definitions and Classification" [6], deals with techniques and terms of electrochemical biosensors. 

Phonetic spelling - using internationally published phonetic symbols, and this is the first book that includes phonetic pronunciation information missing in technical dictionaries that allows the reader to pronounce the term. 

The term Bouguer-Lambert law is not familiar to many spectroscopists. The term Beer-Lambert law or merely Beer s law is frequently used in its place. Technically, Beer s law refers to the observation that the contribution of an absorber to the absorbance of a sample is proportional to the concentration of the absorber. The symbol k is referred to by some spectroscopists as the Beer-Lambert absorption coejficient. Because of the possibility of decadic or napierian absorbance and the various units by which concentration can be expressed, several different quantities are all Beer-Lambert absorption coefficients. The term absorptivity is commonly used in equations for decadic absorbance and can include concentration in any rmits. The term linear absorption coefficient is the usual name for the linear napierian absorption coefficient of a pure material. 

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