Pinging

Fig. 23(E) shows a distillation assembly particularly useful for distilling ether from an ethereal extract. When all the ether has distilled over, the drop-ping-funnel may be replaced by a thermometer for distillation of the residual liquid the adaptor A and the receiver B can then be replaced by the simple adaptor shown in Fig. 23(D) and a flask or bottle of suitable size.

The best way to un derstand ring flip ping in cyclohexane IS to view the animation of Figure 3 18 in Learning By Modeling... 

W. H. FaragaHah, Hquid Ping Vacuum Pumps and Compressors, Gulf PubUshiag, 1985. 

FIG. 23 14 Comp arison of maximiim mixed, segregated, and ping flows, (a) Relative volumes as functions of variance or n, for several reaction orders, (h) Second-order reaction with n = 2 or 3. (c) Second-order, n = 2. (d) Second-order, n = 5. 

High-frequency, destructive vibrations. Unaffected by operating speed. Steam turbine valve vibration Rare occniTence change valve ping, seat shape, and/or increase valve gear rigidity... 

Pings [106], and a neutron diffraction study by Mildner and Carpenter [107], both concluded that there is no clear evidence for sp carbon and that the radial distribution functions can be satisfactorily indexed to a hexagonal arrays of carbon atoms. A similar conclusion was reached in a recent neutron diffraction study of activated carbons by Gardner et al [108]. 

P. C. Eklund, Ping Zhou, Kai-An Wang, G. Dresselhaus, and M. S. Dresselhaus,... 

Other Utihties - Failure of other uOhties, such as inert gas to seals and pinge systems, or compressed air (when used by the process) may in some cases determine pressure relief requirements. These cases are evaluated on a single contingency failure basis similar to the above. 

Interfacial Forces and Fields Theory and Applications, edited by Jyh-Ping Hsu... 

In screw conveyors the removal of part of the screw will ensnre that a ping of bnlk solids/powder will always remain as a choke (Eckhoff 1997). 

Unwanted phases snch as liqnid sings, tramp metal, etc., can damage dry flame arrester elements so that they have to be replaced, or they can also block or ping the arrester free-area. ft is not always obvions when an arrester will be impacted by a liqnid sing or tramp metal. However, when this is snspected or has already occnrred in a process, several things can be done to avoid the problem as follows ... 

Consideration shonld also be given to the possibility that the flame arrester may ping, which conld prodnce a vacnnm condition in a low-pressnre tank when the tank is primped out, and implode (collapse) the tank. This may reqnire the installation of a vacnnm breaker or a pressnre-vacnnm conservation valve. If the tank contents are flammable and admission of air may resnlt in an ignitable mixture, it may be necessary to install an inert gas blanketing system on the tank, actuated by a pressnre controller, which would admit a sufficient flow of inerting gas when a vacnnm condition is detected. 

Pacemic acid, i22, resolution of, 123 Ping-burner, 108 Rotation of ethyl tartrate, 120 tartaric acid, 120... 

Reactions that fit this model are called ping-pong or double-displacement reactions. Two distinctive features of this mechanism are the obligatory formation of a modified enzyme intermediate, E, and the pattern of parallel lines obtained in double-reciprocal plots (Figure 14.19). 

FIGURE 14.19 Double-displacement (ping-pong) bisnbstrate mechanisms are characterized by Lineweaver-Bnrk plots of parallel lines when donble-reciprocal plots of the rates observed with different fixed concentrations of the second substrate, B, are graphed versus a series of concentrations of A. 

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