The eye needs light intensity from the lamp to see objects around it. can because of that hits object and reflects it eye. distance greatly affects condition existence object. Determining hitting will affect brightness eyes, over time eyes become unhealthy. Eye health is very important do job. must be under predetermined standards. Standard use lights makes healthier in addition food nutrition ...

In the production of flowers and ornamental plants, especially in the advanced greenhouse conditions, it is important to have a good light source and its accurate management. This study aimed to evaluate the effect of light quality on morphological and biochemical traits of two Marigold genotypes (Iranian-native and Gitana). This experiment was conducted in a completely randomized design with t...

the aim of this study was to examine the effects of salinity and light intensity on the chlorophylls, ?-carotene and protein contents in dunaliella salina teod. the algae were grown in inorganic medium containing 0, 0.9, 1.8 (control), 2.6 and 3.5 m nacl under three illumination regimens [4500 (control), 9000 and 11000 lux]. the results showed that most electrophoresis protein bands were separa...

Figure 1. Encalypta rhabdocarpa in the alpine region where high-intensity UV light can damage chlorophyll and DNA. Photo by Michael Lüth. Exposure to UV light has been hypothesized as a major deterrent of evolution to land. Both chlorophyll and DNA are easily damaged by high intensities of direct sunlight (Figure 1). In fact, it has been suggested that a major role of lignin, absent in bryophyt...