Factors Affecting Germicidal Efficiency of Chlorine and Chloramine

Chlorine, chloramine, chlorine dioxide, and ozone susceptibility of Mycobacterium avium.

Environmental and patient isolates of Mycobacterium avium were resistant to chlorine, monochloramine, chlorine dioxide, and ozone. For chlorine, the product of the disinfectant concentration (in parts per million) and the time (in minutes) to 99.9% inactivation for five M. avium strains ranged from 51 to 204. Chlorine susceptibility of cells was the same in washed cultures containing aggregates...

Interactions Between Copper and Chlorine Disinfectants: Chlorine Decay, Chloramine Decay and Copper Pitting

Interactions between copper and chlorine disinfectants were examined from the perspective of disinfectant decay and copper pitting corrosion. Sparingly soluble cupric hydroxide catalyzed the rapid decay of free chlorine, which in turn, led to production of less soluble and more crystalline phases of cupric hydroxide. The catalytic activity of the cupric hydroxide was retained over multiple cycl...

Some factors affecting sieving performance and efficiency

Factors Affecting Feed Efficiency of Dairy Cows

Feed efficiency (FE) is a concept that has gained popularity in recent years in the dairy industry. Monitoring FE is becoming a more common benchmark for monitoring the profitability of milk production relative to dry matter (DM) intake. In today’s markets, feeds and commodities are becoming more costly, which is driving the requirement for more efficient utilization to maintain profitability. ...

Human factors in speech synthesis: factors affecting friendliness and efficiency

This study is concerned with the introduction of synthesized speech into the humancomputer interface. A simulated hotel booking system is described which asks for information via either the screen or a DECtalk speech synthesizer. The degree of redundancy within the computer's response set is varied. The perceived 'friendliness' of the system increased with the use of synthesized speech incorpor...