If you're under 15 and you have any questions, or if you have a problem at work that you want to discuss, you should get in touch with: 1  A Child Employment Officer by calling 1800 287 287 or emailing childemployment@ecodev.vic.gov.au.
No-Knot Fas Snaps. I have been using No-knot Fas Snaps for over twenty years. I'm not sure as to why this handy time and leader saver isn't used by more fishermen. I can change my fly pattern in seconds. It allows the fly to move freely like a Duncan Loop.
Answers. 1  There are actually countless feedback loops in the human body, so it would be quite difficult to pinpoint them all. Generally, though, positive feedback loops cause some kind of amplification, and negative feedback loops work to maintain conditions at a certain level. Furthermore, negative feedback loops generally work to shut themselves off, whereas positive feedback loops must be shut off by a different set of mechanisms. An example of a positive feedback system would be blood clotting. When you get injured, the damaged tissue releases chemical signals that activate platelets. These platelets release chemicals that activate other platelets, and so on and so forth, until lots and lots of platelets are activated and clots form. Once the clotting has been taken care of, separate signals are used to shut off the cascade. Negative feedback occurs in a lot of processes that maintain homeostasis.