The automatic cab signal system shall be arranged so that cab signals will be continuously controlled in accordance with conditions described in Â§ 236.205 that obtain at least stopping distance in advance. Â§ 236.512 Cab signal indication when locomotive enters block where restrictive conditions obtain.
Dissolved oxygen (DO) is a measure of the quantity of free oxygen molecules in water. The concentration of DO is an important indicator of the health of an aquatic ecosystem because oxygen is essential for almost all forms of life. Oxygen is necessary for respiration and for some chemical reactions.
The results of the experiment were that at a flow rate of 5 cfs the dissolved oxygen, pH, temperature, and turbidity were different than at a flow rate of 4 cfs. The average turbidity was 3.09 NTU at 5 cfs and was 2.11NTU at 4 cfs.The temperature was 3.2Â° C. at 5 cfs and was 1.3Â° C. at 4 cfs.he results indicate that this hypothesis should be accepted because at a flow rate of 5cfs the pH level, dissolved oxygen level, turbidity, and temperature level was different than at a flow rate of 4cfs.