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Effectiveness proof

Crystalline 1,4-anhydro-D-sorbitol is of much more recent origin than 1,4-anhydro-D-mannitol, inasmuch as its preparation was first recorded in 1946.10 It was obtained by the restricted dehydration of D-sorbitol and has been given the trivial name arlitan. Two groups of workers simultaneously effected proof of its constitution. Hockett and coworkers11 treated the anhydride with lead tetraacetate and since its rate of oxidation coincided with that of ethyl D-galactofuranoside and since one molecular proportion of formaldehyde was formed, the authors concluded that the ring must involve Cl and C4 of a hexitol chain. Assuming that no other carbon atoms are involved, sorbitan is either 1,4-anhydro-D-sorbitol or 1,4-anhydro-D-dulcitol (Walden inversion at C4 of the sorbitol molecule). They therefore synthesized 3,6-anhydro-D-dulcitol (enantio-morphous with 1,4-anhydro-L-dulcitol) but found it to be different from arlitan. [Pg.207]

When bulky alkenes are used, addition of a second alkene molecule to produce an oxo-bis(l,2-diolato)osmate(VI) 7 is preferred. Subsequent osmium oxidation and hydrolysis releases the 1,2-diol and regenerates the trioxo(l,2-diolato)osmate(VIII) 4 that can reenter the catalytic cycle. In this latter case amine addition has no major effect. Proof for the existence of species of type 7 (X-ray) as well as for the catalytic properties of 4 have recently been provided38. [Pg.59]

CAUTION Any spillage of resin beads (wet or dry) should be cleaned up immediately since failing to do this and subsequent attempts to stand or walk on the affected area is very likely to result in a painful, but effective, proof of Newton s First and Third Laws of Motion ... [Pg.87]

Component failure rate data and PFDavg/MTTFS calculations for two cases of the above system are shown in Table 12-1 and Table 12-3. SFF calculations and architecture limit checks are shown in Table 12-2 and Table 12-4. An assumption was made that a very effective proof test was performed at the specified proof test interval with proof test coverage of 95% for the sensor (full calibration), 90% for the logic solver and 80% for final element (full stroke test). The calculation results and all other results... [Pg.176]

The absorption of gamma rays by nuclei (Mossbauer effect) proofing their irmer oscillatory stracture while predicting their dimension as well ... [Pg.342]

Now consider a function which protects against 2 different hazards, one of whidi occurs at a rate of 1 every 2 weeks, or 25 times per year, i.e. a hi demand rate, and the other at a rate of 1 in 10 years, i.e. a low demand rate. If the MTTF of die hmction is 50 years, it would qualify as achieving SlLl for the high demand rate hazard. The high demands effectively proof-test the function against the low demand rate hazard. All else being equal, the effective SIL for the second hazard is given by ... [Pg.107]

The Heaviside function accounts for tmin,i,eft( )> the minimum effective service time interval in which reliability can not decrease based on the properties of time step 1. It is obtained by satisfying the condition Psv(tq) = Psv(tp) locally at P. For the whole component tmin,i,eff denotes the minimum value of tmin,i,eff( ) when evaluated for all If at any location the component proof test stress level is less than the service stress level, then an assured minimum effective lifetime tmin,i,eff does not exist and the component can not be assumed to survive for any given time during service loading. Note that tmin as used here would denote the real time equivalent of tmin,i,eff for the transient loading condition. The equations for tmin,i,efr are described in the subsequent sections. tp,i,eff is the effective proof test time for an applied static stress of oieq,i,Tmax,p based on the properties of time step 1, and tq i,eff is the effective time for an applied static stress of uieq,i,Tma>t,p based on the properties of time step 1 for all time steps (service and proof test). [Pg.454]

Fig. 9. Effect of temperature on strength and ductiUty of a nickel-base superaHoy, IN-939, showing A, tensile strength B, 0.2% proof stress C, reduction in... Fig. 9. Effect of temperature on strength and ductiUty of a nickel-base superaHoy, IN-939, showing A, tensile strength B, 0.2% proof stress C, reduction in...
Equation 16 is a form of the generalized Ohm s law. Ion mobiUty, electron pressure gradients, and inertial effects have been neglected. The latter two phenomena are generally of no concern in MHO generator flows, but ion mobiUty is sometimes significant. Ohm s law including ion mobiUty, stated here without proof, is... [Pg.414]

An especially interesting case of oxygen addition to quinonoid systems involves acidic treatment with acetic anhydride, which produces both addition and esterification (eq. 3). This Thiele-Winter acetoxylation has been used extensively for synthesis, stmcture proof, isolation, and purification (54). The kinetics and mechanism of acetoxylation have been described (55). Although the acetyhum ion is an electrophile, extensive studies of electronic effects show a definite relationship to nucleophilic addition chemistry (56). [Pg.411]

The dried malted barley is ground and mashed in a tub, after which the Hquid portion is drained off, cooled, and placed in the fermentor. After fermentation, a batch distillation system is usually used to separate the whisky from the fermented wort. The stiU consists of a copper ketde with a spiral tube or "worm" leading from the top. The dimensions and shape of the stills have a critical effect on the character of the whisky. The product taken off in the first part of the distillation is called foreshots (heads). The middle portion is the high wines and the last portion is the feints (tails). The middle portion is redistilled at the 140—160° proof (70—80%) range and matured in used oak cooperage. [Pg.82]

The chloroisocyanurates can be used in the bleaching of cotton, synthetics, and their blends they do, however, attack proteinaceous fibers, such as silk or wool, presumably via active chlorine reaction with the peptide (amide) linkage. However, the chloroisocyanurates can be used as shrink-proofing agents in wool finishing (131), (see Textiles Wool). The same action of chlorine upon proteins contributes to the effectiveness of chloroisocyanurates in automatic dishwashers. [Pg.422]

The air is fed against the bursting airflow or at a minor angle. The jet of the curtain developing in the channel is dampened, and from the end of the channel it turns to the opposite direction. This creates a closed circulation proof against outside effects. [Pg.558]

Is FMEA and mistake-proofing applied to each product and process and are the results used to effect beneficial changes to these products and processes ... [Pg.80]


See other pages where Effectiveness proof is mentioned: [Pg.228]    [Pg.5]    [Pg.393]    [Pg.367]    [Pg.95]    [Pg.445]    [Pg.550]    [Pg.228]    [Pg.5]    [Pg.393]    [Pg.367]    [Pg.95]    [Pg.445]    [Pg.550]    [Pg.176]    [Pg.172]    [Pg.1221]    [Pg.1224]    [Pg.106]    [Pg.890]    [Pg.61]    [Pg.22]    [Pg.137]    [Pg.260]    [Pg.485]    [Pg.197]    [Pg.513]    [Pg.42]    [Pg.115]    [Pg.390]    [Pg.390]    [Pg.192]    [Pg.270]    [Pg.19]    [Pg.41]    [Pg.66]    [Pg.222]    [Pg.276]    [Pg.354]    [Pg.50]    [Pg.241]    [Pg.230]    [Pg.248]   
See also in sourсe #XX -- [ Pg.187 ]




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Manual proof test effectiveness

Proofing

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