The invention provides for a controller such as a thermostat for an HVAC system having a housing having a circuit board and a display screen, the display screen having at least one alpha-numeric icon and a group of touch pads having at least two displayable touch pads. The invention also provides methods of implanting or administering the PVA-hydrogels, or the PVA-hydrogel-containing compositions to treat a subject in need. The auxiliary circuit has a passing characteristic that allows a signal having a frequency in a certain frequency band inside the stopband to pass through the auxiliary circuit. Consequently, the initial growth of carbon nanostructure is positively carried out, and the height growth and thickness growth thereof can be effected in high efficiency. 0 percent by weight of the composition, a flow agent in an amount between 0.