scholarly journals A study on phototaxis for adult Chironomidae (Diptera) by artificial light in Lake Suwa : Response of adult chironomid midges to near ultraviolet and visible light

1993 ◽  
Vol 44 (1) ◽  
pp. 33-39 ◽  
Author(s):  
Kimio HIRABAYASHI ◽  
Ryoji NAKAZATO ◽  
Akio OHARA ◽  
Tokio OKINO
Keyword(s):  
Visible Light ◽  
Artificial Light ◽  
Near Ultraviolet ◽  
Lake Suwa ◽  
Chironomid Midges

scholarly journals Gigabit-per-second white light-based visible light communication using near-ultraviolet laser diode and red-, green-, and blue-emitting phosphors

2017 ◽  
Vol 25 (15) ◽  
pp. 17480 ◽  
Author(s):  
Changmin Lee ◽  
Chao Shen ◽  
Clayton Cozzan ◽  
Robert M. Farrell ◽  
James S. Speck ◽  
...  
Keyword(s):  
Visible Light ◽  
Laser Diode ◽  
White Light ◽  
Visible Light Communication ◽  
Ultraviolet Laser ◽  
Near Ultraviolet

Effect of near ultraviolet and visible light on amoeba

1975 ◽  
Vol 19 (1) ◽  
pp. 117-126
Author(s):  
S. Chatterjee ◽  
S.K. Bhattacharjee
Keyword(s):  
Cell Cycle ◽  
Visible Light ◽  
S Phase ◽  
Nuclear Transplantation ◽  
Phase Cell ◽  
Cycle Phase ◽  
Leucine Incorporation ◽  
Repair System ◽  
Near Ultraviolet ◽  
G2 Phase

The near ultraviolet and visible light (VL) impinging at an intensity of 2–5 × 10(2) J s-1 m-2 for 2–5 h kills the mitotic and the early S-phase (0- to 15-min-old) amoebae. At the mid- and late S-period only a fraction of cells are killed by VL and G2 phase cells are quite resistant. Amoebae of all cell cycle stages show a delay in the first mitotic division. DNA synthesis, as measured by [3H]thymidine incorporation, is depressed in the VL-exposed early-S amoebae. A concurrent but temporary inhibition in [3H]leucine incorporation also occurs in these cells. However, no significant change in [3H]uridine incorporation has been found. To localize the site of lethal damage, nuclear transplantation studies were undertaken between the control amoebae and the amoebae treated with VL. The nucleus of a VL-exposed early S-phase cell recovers when transplanted immediately after VL exposure into an enucleate G2 cytoplasm but dies if grafted into an enucleat S-phase cytoplasm. The therapeutic effect of the G2 cytoplasm, although at a lower level, is also evident even when the treated early S-phase nucleus is implanted 20 h later, but not after 48 h, into the G2 cytoplasm. The amoeba cytoplasm shows resistance to VL-irradiation, can accept a control nucleus from any cell cycle stage, and function normally. The G2 nucleus also remains apparently unaffected to VL exposure and can survive when it is transfered to the control cytoplasm of any cell-cycle phase. All these findings are discussed in the light of the possible existence of a repair system against VL-induced damage in the G2-phase amoeba.

Optically-Induced, Room-Temperature Oxidation of Gallium Arsenide

1986 ◽  
Vol 75 ◽  
Author(s):  
Chien-Fan Yu ◽  
Michael T. Schmidt ◽  
Dragan V. Podlesnik ◽  
Richard M. Osgood
Keyword(s):  
Growth Rate ◽  
Gallium Arsenide ◽  
Laser Radiation ◽  
Visible Light ◽  
Room Temperature ◽  
Water Molecules ◽  
Temperature Oxidation ◽  
Near Ultraviolet ◽  
Deep Ultraviolet ◽  
Optically Induced

AbstractRoom-temperature, optically-induced oxidation of the gallium arsenide surface has been studied with laser radiation of different wavelengths. It was found that deep-ultraviolet light is much more effective in enhancing oxidation than near-ultraviolet or visible light. The growth rate of the oxide was also found to be drastically increased by the presence of chemisorbed water molecules on the surface.

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