Documentation considerations

We reiterate that both homoaromaticity and aromaticity are more pronounced in ions than in related neutrals. In the tour-de-force of computational theory, S. Sieber, P. v. R. Schleyer, A. H. Otto, J. Gauss, F. Reichel and D. Cremer [7. Phys. Org. Chem., 6,445 (1993)] document considerable homoaromatic stabilization of the cyclobutenyl cation. Yet the difference of the enthalpy of formation they calculate from their quantum chemical cations, 1021 kj mol-1, is only 54 kJmol-1 lower than that archivally recommended for the cyclopropenium ion [S. G. Lias,... 

Lastly column 9 is reserved for comments and relevant information. This area gives the reviewer an opportunity to suggest improvements in design, methods to increase strength of the component (against the perceived stress) or perhaps needed user documentation considerations. 

All vehicles should be subject to appropriate regular preventative maintenance programmes with appropriate records kept and all vehicle maintenance procedures properly documented. Consideration must be given to driver protection by fitting driver restraint (seat belts), falling object protective structures (FOPS) and roll-over or tip-over protective structures known as ROPS. (See the summary of the Provision... 

The series is the long-awaited revision of the two-volume Le petrole. Raff inage et Genie Chimique" that was first published in 1965 under the direction of Pierre Wuithier. Revision of the original work, which was a highly successful publication, had been under consideration for several years. Jacqueline Funck, then Director of Information and Documentation at the Institut Frangais du Petrole, was instrumental in this endeavor. 

The most effective specification is that which accomplishes the desired result with the fewest requirements. Properties and performance should be emphasized rather than how the objectives ate to be achieved. Excessive demonstration of emdition on the part of the writer or failure to recognize the usually considerable processing expertise held by the vendor results in a lengthy and overly detailed document that generally is counterproductive. Redundancy may lead to technical inconsistency. A requirement that cannot be assessed by a prescribed test method or quantitative inspection technique never should be included in the specifications. Wherever possible, tests should be easy to perform and highly correctable with service performance. Tests that indicate service life are especially useful. Standard test references, eg, ASTM methods, ate the most desirable, and those that ate needed should be selected carefully and the numbers of such references should be minimized. To eliminate unnecessary review activity by the would-be complier, the description of a standard test should not be paraphrased or condensed unless the original test is referenced. 

The Development Process. In the original electrophotographic demonstration, development was accompHshed by dusting lycopodium powder over an exposed sulfur film. This yielded low density images of poor resolution. Considerable powder settied in the exposed background areas (the white areas of a document), and image transfer to paper could only be achieved by prior coating of the paper with wax or another sticky material. 

Solid-Liquid The most-used technique to study sohd suspension, as documented in hundreds of papers in the hterature, is called the speed for Just suspension, N. The original work was done in 1958 by Zwietering and this is stiU the most extensive range of variables, although other investigators have added to it considerably. 

It is not unusual to find more than one compressor suited to the job. Additional factors, such as inherent reliability and efficiency of the v arious types, should be considered. First cost will be an unavoidable factor that must be addressed. If, after consideration of all pertinent factors, there is still an overlap, then it may be advisable to inquire about more than one type of compressor. Normally this doesn t happen, because once the types are reviewed, some factor sways the decision. If, however, more than one compressor will be inquired, a specification should be prepared for each. It is quite difficult to write a comprehensive multipurpose specification. While there are some areas that will be the same, a repeat of each document will make evaluation much easier and cleaner later on... 

To be successful, a team selected from different groups within the project team should participate in the preparation and review of these plans. In addition, a schedule of the review and approval process for these plans needs to be established, accepted by all reviewers, and distributed before release of the first draft. Reviewers should meet an established schedule for review and submission of comments. A distinction between review and approval authority should be determined. The review process determines if all of the required elements are identified. This review can take considerable time, depending on the complexity of the project. The approval process is important when all comments are incorporated. The key responsible persons associated with the project should accept and approve the changes to the document. 

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