Reliability configuration

As shown in this section, CD spectroscopy has the potential to provide reliable configurational assignments for many products of stereoselective synthesis, requiring only small amounts of material (usually 1 mg or less) and simple analytical procedure. In addition, many nonchro-mophoric functional groups (c.g. amino, hydroxy groups) can be converted to chromophoric derivatives suitable for chiroptical studies. 

In view of the above-mentioned phenomena, the best and most reliable configuration will be the one with the catalyst in the annular space between the outer reformer tube and the inner membrane tube. The separative layer can be located best at the inside of the membrane tube. This configuration is shown in Figure 5. 

Finally, melting point depression measurements have been conducted on several symmetrically substituted polysiloxanes, specifically the dimethyl, diethyl, di-n-propyl, and diphenyl polymers. Interpretation of such experimental results yields entropies of fusion. Although it is difib-cult to extract a reliable configurational entropy from this quantity, such results could help elucidate the configurational characteristics of the chains thus investigated. ... 

In general, radioscopic X-ray inspection systems are used in the serial examination of industrial workpieces since they enable a flexible adjustment of the beam direction and of the inspection perspective as well as on-line viewing of the radioscopic image. In the past few years this economic and reliable method has become prevalent in weld inspection during the manufacturing process of pipes. The configuration of such radioscopic systems is schematically represented in fig. 1. 

Maintenance/ The QRA team will need information about process configurations reliability during maintenance activities and historic data on equipment per-... 

The basis for evaluation of piston speed varies throughout industry. This indicates that the subject is spiced with as much emotion as technical basics. An attempt to sort out the fundamentals will be made. First, because there are so many configurations and forms of the reciprocating compressor, it would appear logical that there is no one piston speed limit that will apply across the board to all machines. The manufacturer is at odds with the user because he would like to keep the speed up to keep the size of the compressor down, while the user would like to keep the speed down for reliability purposes. As is true for so many other cases, the referee is the economics. An obvious reason to limit the speed is maintenance... 

In some applications (usually high pressure compressors using oil film seals) alternative pump schemes should be considered. It may be that the desired seal pressure is not achievable by one set of pumps or the quantity required by the seal is small relative to the main pump capacity. There are (imes when booster pumps are needed however, if the reason is energy, it would be worth reviewing the economics very carefully, because reliability tends to suffer with the booster. The booster pumps are paired into a main and standby and are configured to take suction fro lower pressure system. Sufficient interlocks have to be supplied drivers so that if the main pumps shutdown, the boosters come ... 

The stereochemical features of the Claisen rearrangement are very similar to those described for the Cope rearrangement, and reliable stereochemical predictions can be made on the basis of the preference for a chairlike transition state. The major product has the -configuration at the newly formed double bond because of the preference for placing the larger substituent in the pseudoequatorial position in the transition state. ... 

Your design and development plans may also need to be subdivided into plans for special aspects of the design, such as reliability plans, safety plans, electromagnetic compatibility plans, configuration management plans. 

The choice of whether to purchase or generate electricity and decisions on generator or cable configuration and sparing are often not obvious. An economic study evaluating capital and operating costs and system reliability of several alternatives may be required. 

Busses are typically made of aluminum or copper and are rigid bars in the substation, insulated from gi ound and other equipment through ample insulating material, typically air or sulfurhexafluoride. The arrangement of the busses in the substation may fall into a number of different categories the most common are illustrated and explained in Table 1. The appropriate selection of configuration is made by carefully balancing cost, reliability, control, and space... 

The power requirements cannot always be calculated for any system with a great degree of reliability. However, for those systems and/or configurations with known data, good correlation is the result. The relations are [21] ... 

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