Fluorescent lighting

Fluorescent dyes Fluorescent lamps Fluorescent lights Fluorescent pigments... 

Irradiation with a black-light fluorescent lamp. 

The excited molecule passes instantaneously from the singlet to the gound state with the emission of light (fluorescence) (Fig. 14, 15/11). 

Subsequent to removal of fats by extraction with petroleum ether, and processing with ammonia, alkaloids of mate, cola, and cocoa were isolated by extraction with CHC13, and separated by thin layer chromatography. On UV irradiation, the alkaloids showed dark spots on a light fluorescent... 

All dyes absorb light. Fluorescent dyes re-emit the absorbed energy as light of longer wavelengths. An FBA is a fluorescent chemical that absorbs in the ultraviolet region of the spectrum and emits blue-violet light. A typical FBA shows maximum absorption at a... 

The theory describing the interaction of light, fluorescent dyes and metallic nanoparticles (NP s) is complex and only solved for specific systems. An outline of the theory regarding these interactions will be reported here but a more detailed analysis is presented elsewhere22,23. 

TDM was first carried out on drags in biological samples using ultraviolet (UV) light, fluorescence, and electrochemical detection, which measured physicochemical properties of drags. Used alone, these detection methods had low sensitivity and selectivity and were soon obsolete.10... 

The purple color and white-light fluorescence indicate that we have about the same amount of iodine in the two tubes but evidently there is a difference in certain properties. We believe that we are justified in concluding that in the reaction tube the equilibrium existing in ordinary iodine gas has been materially disturbed, and that an iodine has been produced which contains a higher percentage of the type of molecule which cannot absorb the mercury green line than in the normal mixture. 

Currently, a large spectrum of microbial biosensors have been developed that enable the monitoring of pollutants by measuring light, fluorescence, colour or electric current and electrochemical signal [60]. A recent study [19] shows that whole-cell biosensors based on the detection of changes in gene... 

Optical mammography Brain imaging Sequential and/or parallel detection of light at selected points reconstruction of 2D, 3D images Reflected or Breast tumours transmitted light, fluorescence Brain perfusion, stroke... 

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