Program design

Reaction databases contain a wealth of reactions performed in the laboratory and published in the literature, i.c., in contrast to the transform libraries of synthesis design programs they contain raw, uninterpreted reaction information. In Figure 10,3-41 a schematic representation of a reaction in a reaction database is given. 

The Frasca method for obtaining 1-arylindazoles also involves a C(3)—C(3a) ring closure (67CJC697). It consists in the cyclization of p-nitrophenylhydrazones of ketones and aldehydes with polyphosphoric acid. The Barone computer-assisted synthetic design program has found several new methods for preparing indazoles (79MI40409). The selected method involves the transformation of jV, jV -diphenylhydrazides (596) into 1-phenylindazoles (597) by means of trifluoromethanesulfonic anhydride. The yields vary from 2% (R = H) to 50% (R = Ph). 

These deal broadly with the quality concepts as applied to a product or services, such as design, programming or a process etc., practised by an organization, through better communication and understanding. They can be achieved through... 

The Role of the Power Supply within the System and Design Program... 

This completes the black box estimates portion of the design program. As one can see, some very useful information can be determined by performing these estimates. 

A. Read Chapter 1 on the role of the power supply within the system and design program. This chapter provides the reader with insight as to the role of the power supply within the overall system, and develops the power supply design specification. 

A key part of the CANDU 9 design program was the review by the AECB that explored and resolved issues during design. PSA in the design process ensures that safety related requirements are addressed early to reduce retrofits as well as its role in safety assessment and licensing. 

Install and test that program. All too often a carefully designed program is improperly installed. There are many facilities that have excellent manuals describing their programs, but these bear no resemblance to what exists in the field. ... 

Table 1-1 Example of a design program approach Design Category Subcategories Detailed Requirements...

A table can be prepared summarizing the steps in the design of a plastic product. It would indicate the different types of options that can be used at different stages in the design sequence. It also would indicate the areas of potential high risk failure and the alternative approaches to use under these conditions. Example of a design program approach follows ... 

FIGURE 8.2 Example of a flowsheet generated by computer-aided process synthesis, as would be seen on the screen of a computer terminal. The column on the left side of the figure shows options available in the particular design program being run. Courtesy, Peter Piela, Carnegie-Mel Ion University. 

The UNIFAC equation is the preferred equation for use in design, and it is included as a sub-routine in most simulation and design programs. 

Extensive work on the performance and design of thermosyphon reboilers has been carried out by HTFS and HTRI, and proprietary design programs are available from these organisations. 

B9. Boyer, H. M., A User Oriented System Design Program, presented at the Pacific Coast Gas Assoc. Distribution Conf., Los Angeles, California, 1970. 

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