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 (SPC) The following are pages from the information and training presentation on Statistical Process Control. The presentation steps through Statistical Process Control from a basic introduction on statistics, to explaining the widely applied statistical techniques. â Inform yourself about Statistical Process Control.