It can cause nausea and diarrhea, especially in high doses or after long-term use. It might also pose a risk of ulcers in high doses. As a topical treatment, it can cause skin irritation. Caution is advised when turmeric is taken by people known to have gallstones; consult your health care provider first.
Gain is the ratio between the magnitude of output and input signals. Gain controls on an amplifier are basically just small potentiometers (variable resistors) or volume controls, that allow you to adjust the incoming signal to the amplifier.
The input was chosen to be at 100 MHz frequency and input power of -60 dBm. The noise figure of this system is 7.14 dB, which is reasonable for this system. The FM demodulator has a variable gain amplifier of 45 dB, therefore the total gain of the system is 104.40 dB.