St. John's Wort (Hypericum perforatum) GENERIC NAME: Hypericum perforatum. BRAND NAME: St. John's Wort. DRUG CLASS AND MECHANISM: St. John's wort is a commonly used over-the-counter (OTC) dietary supplement that is used to treat mild depression, anxiety, and sleep disorders. St. John's wort is a plant that has bright yellow flowers.
Coronary artery chronic total occlusion (CTO) is complete or almost complete blockage of a coronary artery for 30 or more days. Coronary CTO is caused by a heavy build-up of atherosclerotic plaque within the artery.
Ambient occlusion concepts. Definition of occlusion. Ambient occlusion refers to the blocking of indirect or diffuse light on an object. It refers to the darker areas of the object, typically creases, cracks and crevices. Ambient occlusion is caused by indirect light's inability to bounce around and illuminate areas that are blocked by a nearby object that absorbs the light rays.