Three-phase equilibrium conditions of hydrates (water-rich liquid, hydrate, and vapor) of carbon dioxide and methane binary mixtures were Investigated In the temperature range of 273-288 K and the pressure range of 1.2-11.0 MPa. The vapor-phase concentrations were measured by a gas chromatograph. The results obtained were In good agreement with previous measurements done by researchers at the University of Michigan who had calculated the carbon dioxide concentration In the vapor phase. The data obtained In this work did not show unusual hydrate phenomena, as reported In a more recent publication by researchers In Hungary.

The degradation of 2-chloro-4-ethylamino-6isopropylamino-s-triazine (atrazine) and 2chloro-4-(l-cyano-l-methylethylamino)-6-ethylamino-s-triazine (cyanazine) was investigated in a Perth clay loam soil. Atrazine and cyanazine were applied at rates of 1, 2, and 3 lb/A of active ingredients as pre-and postemergence treatments. Soil was sampled from plots after 0, 2, 3.5, 5, and 12 months at 0-2.5, 2.5-5, and 5-10 in. depths. Atrazine, cyanazine, and their phytotoxic metabolites were extracted with a 65% acetonitrile-water mixture and quantitated on a Coulson conductivity detection system. Presented data indicate that atrazine is converted into deethylated atrazine (2-chloro-4-amino-6isopropylamino-s-triazine) as a major and deisopropylated atrazine (2-chloro-4-amino-6-ethylamino-s-triazine) as a minor phytotoxic metabolite and that cyanazine is changed to deisopropylated atrazine as a major phytotoxic metabolite.Cyanazine amide[2-chloro-4-(l-carbamoyl-lmethylethylamino)-6-ethylamino-s-triazine] was found. It is proposed that the hydrolysis precedes the microbiological degradation to the deisopropylated atrazine.Atrazine and cyanazine are selective herbicides used for the control of annual broadleaf and grassy weeds in corn and sorghum. Both herbicides may be applied at the rates of 1-4 lb/A active Cyanazine, developed at the Woodstock Agricultural Research Centre in England, is marketed by the Shell Chemical Co. under the trade name Bladex. It is claimed by the manufacturer to be less persistent in soil than atrazine and therefore less detrimental on the subsequent crops. The unstable nature of the cyanazine molecule also allows it to be used as a herbicide in potatoes, peas, barley, and wheat (Beynon et al., 1970).

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Alarm fatigue desensitizes nurses to alarm signals and presents potential for patient harm. This project describes an innovative method of communicating cardiac monitor alarms to pagers using an alarm escalation algorithm. This innovation was tested on 2 surgical progressive care units over a 6-month period. There was a significant decrease in mean frequency and duration of high-priority monitor alarms and improvement in nurses' perception of alarm response time, using this method of alarm communication.