Abstract: The point-of-use water treatment system for treating water to be dispensed from a container includes a filter media positioned adjacent a water input opening of the container, through which water is filtered into the container. The filter media includes a water soluble disinfectant positioned thereon or therein, with the preferred disinfectant tetraglycine hydroperiodide, chloramine-T, or calcium hypochlorite. The disinfectant dissolves in the water as it passes through the filter, and reduces the biological activity of microbiological agents in the water. A point-of-use method of the present invention which reduces microbiological contamination in a predetermined volume of water to be dispensed from a container which utilizes a filter media containing a water soluble disinfectant impregnated thereon is also disclosed.

Abstract: An ornamental turning device (10) comprises a shaft (11) on which is mounted a work to be decorated. The device (10) also comprises tool drive means (5) for driving a tool (7) for decorating the work (9). The driving mechanism (5) ensures that the reciprocating blade of tool (7) reciprocates at a rate proportional to the rate of rotation of the shaft (11).

Abstract: A sample flow of drilling mud is taken via a pipe 14 from a shale shaker tank 10 and passed into a container 15 with a vigorous stirrer 17 and having a capacity of typically 0.40 m.sup.3. The sample flow rate and size of the container are sufficient to permit analysis of samples taken at 15 minute intervals via a pipe 18 and valve 19, without aliasing information in the resulting data. For eight hour sampling an intermittent flow is taken from the container 15 into another agitated container 21 via a pipe 26 with a valve 27 which is open only for two seconds in every minute. Analysis samples are taken via a pipe 22 and a valve 23 and the residence time in the tanks 15 and 21 is sufficient to prevent aliasing in the information acquired by eight hour sampling and analysis.

Abstract: A method of real time analysis and control of a fluid influx from an underground formation into a wellbore being drilled with a drill string, a drilling and circulating from the surface down to the bottomhole into the drill string and flowing back to the surface in the annulus defined between the wall of the wellbore and the drill string, the method comprising the steps of shutting-in the well, when the influx is detected; measuring the inlet pressure P.sub.i or outlet pressure P.sub.o of the drilling mud as a function of time at the surface; determining, from the increase of the mud pressure measurement, the time t.sub.c corresponding to the minimum gradient in the increase of the mud pressure and controlling the well from the time t.sub.c.

Abstract: A process for the manufacture of bis-(2-hydroxyethyl)-terephthalate which comprises heating together dimethyl terephthalate and a substantial excess of ethylene glycol in the presence of a basic ester interchange catalyst, under reduced pressure whereby the by-product methanol is distilled out of the system. This process enables bis(2-hydroxyethyl)-terephthalate of good quality to be made in improved yield and with minimal oligomer formation compared with previously known methods. The product finds application in the manufacture of polymers such as poly (ethylene terephthalate).