North Observation Well

While the experiment was in progress, steam injection into the well 257 was interrupted for one month. During that period of time, steam was injected into the production well 258 (located 100 m west of well 257) at the rate of 190 t/day and into production well 454 (located 200 m north of well 257) at the rate of 200 t/day. During tins same time the temperature in the observation well 477 decreased to 31°C, that is, almost down to natural formation temperature. 

They use abundance of Ice in Persia, as I have been observing in Summer especially every one drinks with Ice But that which is most remarkable, is, That tho at Ispahan, and even at Tauris, which is further North, the Cold is dry and penetrating more than it is in any part of France or England, yet the greatest part of the People drink with Ice as well in the Winter as the Summer. 

Elkan and Horvath170 performed a microbiological analysis of samples taken from the north and south deep monitoring wells in December 1974, about 6 months after the dilute waste front had reached the south well. Both denitrifying and methanogenic bacteria were observed. The lower numbers and species diversity of organisms observed in the south monitoring well compared with those in the north well indicated suppression of microbial activity by the dilute wastes. 

The state of aggregation of the polymerising system represents another important factor which may affect the kinetics of polymerisation. It is well known (96,97) that many radical polymerisations are enhanced by increase in the viscosity of the po-lymerisingsystem, and this phenomenon was explained by a decrease in the rate of termination step which may become diffusion-controlled. In fact, the effect of viscosity should be observed at any stage of radical polymerisation, and this problem has been discussed recently by Benson and North (98, 99). Of course, this type of acceleration cannot be observed when the growth involves living polymers and therefore such an explanation does not apply to polymerisation of NCA, particularly since no termination resulting from active end-active end interaction takes place in these processes. 

---