Sexually transmitted diseases -- or STDs -- often are silent, meaning there are no symptoms. Women may not notice any symptoms until they have developed serious complications. Be on the lookout for: A drip or discharge from the penis, urethra, vagina, or anus; the color may be white, yellow, green, or gray.
An energy recovery ventilator (also abbreviated ERV) is a type of air-to-air heat exchanger that not only transfers sensible heat but also latent heat.Because both temperature and moisture are transferred, ERVs can be considered total enthalpic devices.he benefit of using energy recovery is the ability to meet the ASHRAE ventilation & energy standards, while improving indoor air quality and reducing total HVAC equipment capacity.
What is an ROV? Remotely operated vehicles (ROVs) are a safe and widely used type of underwater vehicle serving a range of military, commercial, and scientific needs. Using a series of propellors, ROVs are unoccupied, highly maneuverable underwater robots operated by a person on the surface. An âumbilicalâ cable carries power and and control signals to the vehicle and video, status and other sensory data back to the operators.