Rhodamine B, a fluorescent dye, was used to study dilution in the Ottawa
River downstream of the NPD reactor site. Dye was injected into the NPD process
sewer for a 3-hr period and the concentration measured as it dispersed in the
river. An initial dilution of l00 was observed near the outfall. A wide, deep
section of the Ottawa River downstream of the reactor site acted as a detention
and mixing basin. Dye concentrations at the town of Deep River water intake, 16
km downriver, indicated a minimum overall dilution of the effluent of 3 x 10/sup
4/. The water velocity in this section of the Ottawa River was about 9 km/day.
"detect effects due to CRL. Although vertical mixing of CRL cooling water effluent is complete by the time the water reaches the Sandspit, transverse mixing (and dilution) is incomplete, and therefore any substances from CRL will be more concentrated near the Ontario shore, until the water leaves the 45-m-deep, 7-km-long basin between CRL and the narrows, 8 km downstream . Perch Creek, which carries water from the majority of the CRL waste management areas, enters the river between the CRL cooling water discharge and the Sandspit. "
[Show abstract][Hide abstract] ABSTRACT: A comparison has been made of the profiles of concentration and the duration of passage of both the insecticide (Methoxychlor) and a fluorescent dye (Rhodamine B) at various distances downstream from experimental treatments for the control of blackfly larvae. It has been shown that the dye can provide useful information for planning future larvicide treatments and can form a basis for monitoring insecticide concentrations downstream from ground-level application sites, or for predicting effects in other streams of similar character in advance of actual or potential loadings.
[Show abstract][Hide abstract] ABSTRACT: The most recent experiment by Aspect, Dalibard, and Roger does not appear to rule out a class of theories in which the outcome of an event is not determined until some time after its occurrence. This class of theories includes not only the quantum theory but various local, realistic theories as well.
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