1 Next add your ingredients: the compost and kelp or molasses. 2  Let the tea brew for about 24 hours. 3  Make sure the opening to the air pump is distributed evenly (cheapest is an air stone) and secured to the bottom, so it does not get pushed to the top overnight. 4  This will keep the tea sufficiently aerobic.
One example of a technical control is data encryption. Other examples are network intrusion detection systems, passwords, firewalls and access control lists. Continue Reading. Technical controls secure computing system and information access through strategically designed software and hardware.
Statistical process control is a method of quality control which employs statistical methods to monitor and control a process. This helps ensure the process operates efficiently, producing more specification-conforming product with less waste. SPC can be applied to any process where the conforming product output can be measured. Key tools used in SPC include run charts, control charts, a focus on continuous improvement, and the design of experiments. An example of a process where SPC is applie