Proofs checking

I appreciate the help in assembling this volume that I received from Dr. Norman G. Fisher, who advised me on nomenclature, Dr. Wallace Copeland, who checked most of the references, and Mrs. Irene Dutton, who typed the manuscript and checked proof. 

Authors should check proofs very carefully and submit all of the corrections at one time see Box 3-3 and Appendix 3-1 for information about reviewing... 

Scott has been particularly helpful in handling all the problems of nomenclature and indexing. The editor wishes also to thank Mrs. Marie C. Hall for her aid in preparing the manuscript and Mr. Valentine D. Galasyn for his invaluable help in editing the manuscript and checking proof. 

One author, generally the author to whom correspondence should be addressed, receives a proof of the manuscript for final approval before publication. A paper is usually not released for printing until the author s proof or other approval has been received by the Journals Editorial Office, Graphics and Production Department, or Books Department. Hence, proofs should be checked and returned promptly according to individual journal or book instructions. To save time and expense, foreign contributors may authorize a colleague in the United States to check proofs. 

Authors should check proofs thoroughly by reading them at least twice. Only corrections and necessary changes can be made in proofs. Extensive changes will require editorial approval and perhaps a revised date of receipt and will delay publication. Printer s errors are corrected at no cost to authors, but authors mav be charged the cost of extensive production work made necessary by their own alterations. In books, there may not be time to do extensive alterations at all. 

Types of Automation Theorem Provers - fully formal machine-checked proofs, in which the theorem prover attempts to produce a formal proof, given a description of tbe system, a set of logical axioms and a set of inference rules. Model Checkers - automated proof of model against tbe specification, in which the model checker verifies certain properties by means of a search of possible states of a system. 

For both analogue and digital prepress processes it is frequendy necessary to check the appearance of an image and then to gain customer approval to proceed with the expensive step of image dupHcation by printing. For this purpose, proofs are made at several steps of the workflow (see Fig. 2). 

In studio photography, instant color sHdes exposed simultaneously with conventional color films are used to provide proofs that can be projected immediately for viewing by the customer. Professional photographers also use instant films as proof material to check composition and lighting. Large format Polacolor films are often used directly for exhibition prints. 

Proof Testing A run through the process substituting nonhazardous materials (e.g., water) to check for the adequacy of the equipment e.g., heating/cool-ing load, and to verify procedural steps. 

Special-purpose motors such as increased safety motors, flame-proof or explosion-proof motoi s must be checked for gaps, clearances and creepage distances of all the mating parts forming flame paths. The construction of these motors must follow lEC 60079 as noted in the list of standards. 

Before first use hoses to be inspected visually internally and externally and tested at proof pressure. Repeat at least annually and include check on electrical resistance. The resistance of the complete assembly should be not more than 15 ohms, unless the hose is intended to be non-conducting when resistance should be at least 25 000 ohms. Inspect hose daily when in use. Hoses used at monobuoys should also be hydraulically tested. 

Cascading effects Check valve Clogged (of filter) Consensus standard Conservation vent Dike, berm Discharge valve Division (in electrical area classification) Downspout Expansion joint Explosion proof Faucet... 

Beleg, m. covering, coating, lining plating incrustation floor proof document, -ana-tyse, /. analysis giving experimental proof check analysis. 

A water-proof machine is a totally enclosed machine so constructed that it will exclude water applied in the form of a stream of water from a hose, except that leakage may occur around the shaft provided it is prevented from entering the oil reservoir and provision is made for automatically draining the machine. The means for automatic draining may be a check valve or a tapped hole at the lowest part of the frame which will serve for application of a drain pipe. 

The checking and readjustment as necessary of all safety controls is an essential part of periodic maintenance - possibly annually. A time should be chosen when temporary stoppage of the plant will not cause inconvenience. Unsafe conditions can be set up by throtding valves, stopping pumps, or removing the load. In each case the relevant safety control should function at the pre-set conditions. Safety checks on specialized items such as fire dampers may be required from time to time by local authorities, and these checks, together with the expert advice available from the testing officers, should be welcomed as proof of the inherent safety of the installation. 

To verify that a proposed reaction mechanism agrees with experimental data, we construct the overall rate law implied by the mechanism and check to see whether it is consistent with the experimentally determined rate law. However, although the constructed rate law and the experimental rate law may be the same, the proposed mechanism may still he incorrect because some other mechanism may also lead to the same rate law. Kinetic information can only support a proposed mechanism it can never prove that a mechanism is correct. The acceptance of a suggested mechanism is more like the process of proof in an ideal court of law than a proof in mathematics, with evidence being assembled to give a convincing, consistent picture. 

Hoods usually have a light built into a sealed opening, making it explosion-proof for use with flammables. Fans used for flam-mables must also be explosion-proof. Those used for corrosive fumes must be made of material resistant to such fumes. The ductwork must also be corrosion resistant, a matter often overlooked. Built-in exhaust fans make installation and servicing easy, but some tend to be noisy. Remotely installed fans are generally quieter and may serve more than one hood. The chief problem with fans is that they are often improperly serviced. Lubrication and belt tightness must be checked as specified by the manufacturer, or costly repairs will result. 

We thank Mrs Margaret Wilson for her help in checking the proofs and the indexing. 

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