You will notice that the installation will bring up a command prompt window while Python downloads and installs âPip.â Pip is just a package management tool. This will allow you to install all the additional Python packages that are available for download through PyPI (Python Package Index) .
Lumber Pressure Treated With Chromated Copper Arsenate. Chromated copper arsenate (CCA) has been used extensively in this country as a wood preservative. CCA is composed of: copper, which acts as a fungicide; arsenate, a form of arsenic, which is an insecticide; and chromium, which binds the ingredients to the wood.
TCA stands for trichloroacetic acid and is a common agent used for chemical peeling, one type of facial resurfacing. It comes in varying concentrations, allowing for varying depths of peeling (depending on the concentration). TCA peels can help treat pigmentation, discoloration, fine lines and aging grooves.