There are 3 types of bulbs that work well as grow lights: metal halide, high pressure sodium (HPS), and fluorescent. Each type of light fixture has its own advantages and drawbacks. 1  Metal halide bulbs are compact and efficient, producing a very intense light from a small bulb.
The normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not.Contents.he normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a space platform, and assess whether the target being observed contains live green vegetation or not. Contents.
Abstract: A new classification scheme for neovascularization of the iris (NVI) is. presented. This system designates the location of the new vessels by a letter. and the number of quadrants involved by a numeral. The presence of elevated. intraocular pressure (lOP) is denoted by a+ sign. It was found to be a reliable. method in the evaluation of the clinical course and results of treatment in. patients with NVI. [Key words: classification, glaucoma, iris neovascularization.] Ophthalmology 94:542-544, 1987.