Cumulative priming

Crawford bomb 66 cresylite = mixture of trinitrocresol and picric acid (french) crimping 66 critical diameter 66 CR-propellants = RDX containing rifle powders (USA) cross section ratio -> propellant area ratio 269 crusher 149 362 C.TD. = coefficient of detonation transmission (coefficient de self exitation) (french) 87 CTPB = carboxyl-terminated polybutadiene (USA) 61 329 cumulative priming 66 c.u.p. = coefficient d utilisation pratique (french) 198 cuprene 52 cupric salicylate 163 curing 67... 

A carbocation is strongly stabilized by a C substituent (Figure 7.1c) through n-type interactions which involve substantial delocalization into the substituent. The LUMO energy is relatively unchanged, but the reactivity of the electron-deficient center toward attack by nucleophiles is reduced because the orbital coefficients are smaller. Allyl and benzyl carbocations are prototypical of C -substituted carbo-cations. The effects of substitution are cumulative. Thus, the more C -type substituents there are, the more thermodynamically stable is the cation and the less reactive it is as a Lewis acid. A prime example is triphenyl carbocation. 

The data reduction hardware is based on a Hewlett-Packard 9825A desk top computer. It is supported by one megabyte of flexible disk storage, a printer/plotter and the necessary interface equipment for on-line LSC data collection. Reliability was a prime factor when the hardware was chosen. The LSC(s) and data system run virtually unattended, 24 hours a day, 365 days a year. Samples are typically counted for two minutes each plus one minute for the external standard. Therefore, data from the four counters are received by the HP9825A at an average interval of 45 seconds. With such a demand on the system, computers require good service support, more so than other instruments. Since installation in May, 1977, there have been less than two work days of cumulative downtime. 

In these types of considerations the presentation of measured parameters as a function of both time and cumulative discharge is most useful. In the example of Fig. 4.16 the salty water broke through after pumpage of 3000 m3 in 12 hours. Hence, the routine pumping rate should be significantly lower if only fresh water is wanted, and abstraction may be closer to the break-through value if water quantity is of prime importance and the quality of the mixed waters is acceptable. 

Another way to solve the problem is to eliminate constraints. Tools, equipment, and time might be in this category since these constraints can take many forms. Ergonomic considerations in job design is a potential constraint. Employees who are forced to stoop, bend, twisf turn, stretch, lean, reach, or assume unnatural postures to perform routine tasks are subject to discomfort and fatigue. Discomfort and fatigue may distract fiom immediate hazards, and chronic physical stresses may make employees prime candidates for such cumulative trauma disorders as carpal tuimel syndrome and tendinitis. 

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