UV light switches on the catalytic activities of several metal oxides in hydrogen bond catalyzed reactions because of the changes in the concentration of the surface hydroxyl groups.

Tungsten trioxide nanoparticles with two different sizes (average particle sizes about 50 and 80 nm) were prepared by the spray pyrolysis method. Photo degradation of Congo Red (azo dye) showed that photo catalytic property of the as-prepared WO3 nanoparticles with average size about 80 nm is higher than the sample with average size about 50 nm. Photo degradation of Rhodamine B (...

Dyads of the hypsochromically absorbing energy donor benzoperylenetriscarboximide and more bathochromically perylenebiscarboximide with various spacers were synthesized by means Sonogashira reaction where transition moments acceptor are orthogonal causing zero for geometry factor κ simple p-phenylene spacer. Exciton interactions extinguished; however, transfer RET (resonance transfer) proceeded...

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Nifedipine (NIF), a 1,4-dihydropyridine calcium channel antagonist, undergoes photo-degradation to dehydro-nifedipine (DNIF) upon exposure to ultraviolet (UV) light and to the nitroso analogue of dehydro-nifedipine (NDNIF) when exposed to sunlight or some kinds of artificial lights. NIF photo-degradation products do not contribute to clinical activity, thus prevention of photo-degradation of NI...

modeling and simulation of communication circuits at high frequency are important challenges ahead in the design and construction of these circuits. knowing the fact that the lumped element model is not valid at high frequency, distributed analysis is presented based on active and passive transmission lines theory. in this paper, a lossy transmission line model of traveling wave switch (twsw) i...

Despite the synergy of immune checkpoint blockade (ICB) therapy and photodynamic (PDT) holds great promise as countermeasures against breast cancer, exploring long-term or flexible short-time therapeutic strategies in “cold” tumors remains a challenge. Here, we present polyunsaturated fatty acid-doped liposomal hydrogel Lp(DHA)@CP Gel loaded with photosensitizer chlorin e6 (Ce6) programmed deat...

Off/on, on/off, and on1/on2 fluorescence switching systems find application in a variety of areas, for each which particular dye or dye-switch tether must be specifically designed synthesized. Herein it is demonstrated that such tight requirement can avoided by using easily prepared mixtures readily available emitters phase change materials (PCMs). By proper selection the PCM and, if needed, ad...

We propose a unified framework to study the walk problem in a polygonal area by two collaborative guards. A walk is conducted by the two mobile guards on the area’s boundary. They start at an initial boundary point, move along the boundary, and may possibly meet together again at an ending boundary point. It is required that the two guards maintain their mutual visibility at all times. Dependin...

A review of methods for volumetric scene reconstruction from multiple views is presented. Occupancy descriptions of the voxels in a scene volume are constructed using shape-from-silhouette techniques for binary images, and shapefrom-photo-consistency combined with visibility testing for color images.