Results 211 to 220 of about 4,066,800 (255)
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Visible‐Light Photoredox Catalysis
Angewandte Chemie International Edition, 2012AbstractIn the last few years, visible‐light initiated organic transformations have attracted increasing attention. The development of visible‐light‐promoted photocatalytic reactions, which enable rapid and efficient synthesis of fine chemicals, is highly desirable from the viewpoint of cost, safety, availability, and environmental friendliness.
Jun, Xuan, Wen-Jing, Xiao
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Visible light treatment of photoaging
Dermatologic Therapy, 2005Recently, a number of new devices have been developed specifically to improve the visible signs of aging in a noninvasive way. These include visible or near-infrared lasers, intense pulsed light sources (IPL), light-emitting diode (LED), and radiofrequency devices.
Christine C, Dierickx, R Rox, Anderson
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Visibility of unpredictably flickering lights
Journal of the Optical Society of America, 1974We have measured the sensitivity of the visual system to temporal modulation with unpredictable, aperiodic signals. We used three kinds of stimulation, (i) a band-limited gaussian random signal, (ii) a passband-limited gaussian random signal, (iii) a periodically quenched random signal.
J J, Koenderink, A J, van Doorn
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Photocatalysts Sensitive to Visible Light
Science, 2002Because of the potential application to the conversion of solar energy to chemical energy, the development of semiconductor photocatalysts that have high reactivity under visible light has received great attention. Asahi et al. report that TiO2 becomes a photocatalyst that is sensitive to visible light when it is sputtered or heated in a N2Ar mixture ...
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Mutagenesis by Near-Visible Light
Science, 1967Mutants resistant to bacteriophage T5 were produced both in continuous and in stationary cultures of Escherichia coli by near-visible light, 320 to 400 millimicrons, at rates greatly exceeding spontaneous rates in the absence of light.
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Optical OFDM for Visible Light Communications and Visible Light Positioning
2019This thesis addresses key aspects of practical visible light communication (VLC) systems. The research can be divided into three main topics. First, the limited data rate of current VLC systems is addressed in two ways. A performance analysis of the most important VLC modulation formats has been described and a new receiver for one of these schemes has
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Visible light photocatalytic degradation of tetracycline over TiO2
Chemical Engineering Journal, 2020Suqing Wu +2 more
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