The diseases have been categorized as patches (cause dead spots or patches in the lawn), rings (cause rings of dead or affected grass), or leaf blight (affect individual blades of grass, often over a wide area and no distinct patch or ring pattern may be noticeable).
PVR, abbreviation for pulmonary vascular resistance. To measure changes in blood vessel size or changes in gas volume in the lungs to assist in diagnosing diseases such as deep vein thrombosis (DVT), chronic obstructive pulmonary disease (COPD), and some peripheral vascular disorders. Veins, arteries, and lungs. None.
What is PVD? PVD stands for Physical Vapor Deposition. A material is selected to coat a base metal or substrate surface. That material is vaporized and deposited on the base or substrate material, bonding molecularly with the base material. Our PVD watch coating is very durable and attractive as a watch case and bracelet finish.