photoactivation

photoactivation

the excitation of atoms by light energy so that electrons become temporarily raised to a higher energy level. The process is the starting point of PHOTOSYNTHESIS, when light strikes a CHLOROPHYLL molecule. see LIGHT REACTIONS.
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Researchers found that "mice provided an opportunity to shut off photoactivation of MnPO [median preoptic nucleus] neurons by lever pressing did so vigorously, ending the undesirable feeling of thirst," (https://www.
Thereby, photoactivation of a compound results in the activation of electrons (from the stable singlet state to an excited triplet state), which then return to a more stable configuration and transfer their energy to oxygen.
Reduction of Candida tropicalis biofilm by photoactivation of a Heterophyllaea pustulata extract.
Objectives: To assess compressive strength and effect of duration after photoactivation on the compressive strength of different dual cure bulk fill composites.
UV exposed cells were kept in dark to prevent photoactivation and then further subjected to mutant selection media.
The effect of zinc oxide and titanium dioxide nanoparticles in the Comet assay with UVA photoactivation of human sperm and lymphocytes.
Skin lesions, caused by photoactivation of accumulated cutaneous porphyrins, may be found.
For the conversion of the solar radiation into electrical energy with a cathodic DSC (or p- DSC) that works through the photoactivation of a reduction process [12,14], the main prerequisite is the preparation of a p-type semiconductor with mesoporous morphology that chemisorb high amounts of dye sensitizers and create an extended electrochemical interface with the electrolyte (vide infra) [15].
Ultra-high resolution imaging by fluorescence photoactivation localization microscopy.
Cutting edge technologies that will be used in this study will include: (1) flow cytometry and fluorescence activated cell sorting (FACS) to identify and select cell subpopulations to test their antifungal resistance, (2) automated, high throughput, high content live cell imaging to analyse the resistance of single cells to antifungals, (3) advanced live-cell imaging techniques including GFP photoactivation and fluorescence recovery after photobleaching (FRAP) to identify septal pore plugging; and (4) laser microdissection to further analyse septal pore plugging.
For Epiphany SE subgroups, the sealer photoactivation was performed for 40 s with the light (Ultralux, Dabi-Atlante, Ribeirao Preto, Brazil) pointed to the cervical root-third.