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Tauböck Tobias T TT Department of Preventive Dentistry, Periodontology and Cariology, Center for Dental Medicine, University of Zurich, Zurich, - - 2014
This study investigated the influence of modulated photo-activation on axial polymerization shrinkage, shrinkage force, and hardening of light- and dual-curing resin-based composites. Three light-curing resin composites (SDR bulk-fill, Esthet X flow, and Esthet X HD) and one dual-curing material (Rebilda DC) were subjected to different irradiation protocols with identical energy ...
Xiao Qi Q School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, 2 George St. Brisbane, QLD 4001 (Australia), Fax: - - 2014
Recent advances in direct-use plasmonic-metal nanoparticles (NPs) as photocatalysts to drive organic synthesis reactions under visible-light irradiation have attracted great interest. Plasmonic-metal NPs are characterized by their strong interaction with visible light through excitation of the localized surface plasmon resonance (LSPR). Herein, we review recent developments in direct photocatalysis using ...
Yenchalwar Sandeep G SG Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Pune-411008, MH, India. - - 2014
A light sensitive wide band gap radial heterojunction between TiO2 and nSiNWs sensitized by gold nanoparticles is reported. The surface plasmon of AuNPs influences the optical and photocurrent properties of the heterojunction considerably. Improvement in the band gap emission of TiO2 has been found at the expense of defect radiation. ...
Zhou Jianwei J Institute of Energy and Fuel, Xinxiang University, Xinxiang, China 453003. - - 2014
C3N4@ZnO hybrid materials with visible light photocatalytic performance have been prepared by facile mechanical milling. The dispersion of conjugated molecule g-C3N4 on the surface of ZnO improved during mechanical process, and the multilayer hybrid structure of g-C3N4@ZnO materials with remarkable visible light photocatalytic activity was formed by ball milling. The ...
Huo Junchao J Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China. czli@ecust.edu.cn - - 2014
A novel one-step, vapor-fed aerosol flame synthetic process (VAFS) has been developed to prepare Ti(3+) self-doped titanium dioxide (TiO2). The freshly formed TiO2 was in situ surface hydrogenated during the condensation stage by introducing H2 above the flame, and Ti(3+) ions were created near the surface of TiO2. The relative ...
Jiang Denghui D The Laboratory for Nano-Catalytic Materials and Technologies and ∥i-Lab, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences , Suzhou 215123, - - 2014
The surface plasmon resonance (SPR) and Schottky effects are important photocatalytic activity boosters in metallic cocatalyst/photocatalyst systems, but it is difficult to differentiate them. In this report, we design a simple method to distinguish the two effects by utilizing a distance-tunable self-assembled monolayer (SAM) in a gold (Au)-Cu2O composite in ...
Wu Chin H CH Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093, - - 2014
The efficiency and selectivity of SPECIFIC-CP, a widely used method for selective double cross-polarization in triple-resonance magic angle spinning solid-state NMR, is improved by performing the tangential-shaped (13)C irradiation at an offset frequency that meets the Lee-Goldburg condition (LG-SPECIFIC-CP). This is demonstrated on polycrystalline samples of uniformly (13)C, (15)N labeled ...
Baron Elma D ED Department of Dermatology, University Hospitals Case Medical Center, Louis Stokes Cleveland Veterans Affairs Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Lakeside 3500, Mailstop 5028, Cleveland, OH 44106-5028, USA. Electronic address: - - 2014
Photobiology is the study of the local and systemic effects of incident radiation on living organisms. Solar radiation is made up of ultraviolet, visible and infrared radiation. Ultraviolet radiation is made up of UV-C, UV-B, and UV-A. Sun exposure can lead to sunburn, tanning, vitamin D production, photoaging, and carcinogenesis. ...
Engwall Marie M School of Health Sciences, Borås University and the Institute of Health & Caring Sciences, Academy of Sahlgrenska, University of Gothenburg, - - 2014
The present study reports findings concerning light in an intensive care unit setting presented from 3 aspects, giving a wide view. The first part is a systematic review of intervention studies concerning cycled light compared with dim light/noncycled light. The findings showed that cycled light may be beneficial to preterm ...
Kim Jun-Hyun JH Department of Chemistry, Illinois State University , Normal, Illinois 61790-4160, United - - 2014
This work describes the light-induced preparation of various gold nanoparticles and demonstrates their possible use as efficient photothermal heating materials and practical heterogeneous catalysts under the irradiation of a solar-based light after being loaded onto a paper-based substrate. The synthesis of gold nanoparticles was accomplished under the irradiation of daily ...
Specchio F F Department of Medicine, University of Rome, “Tor Vergata”, - - 2014
Ultraviolet B (UVB 290-320 nm) radiation has been used in the treatment of different skin diseases. Light sources with narrowband UVB output spectrum have been developed with the aim of increasing the rates of “beneficial to side effect” profile of the treatment. Narrowband UVB phototherapy using fluorescent lamps (TL01, 311∓2nm) ...
Lázaro C A CA Faculty of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalación Cdra. 28 s/n, PO Box 03-5137, San Borja, Lima, Perú Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Vital Brazil Filho 64, CEP: 24230-340, Niterói, Rio de Janeiro, Brazil - - 2014
Radiation from UV-C has been demonstrated as a potential surface decontamination method in addition to several advantages over regular sanitation methods. However, UV-C radiation possibly affects the physicochemical properties of meat products. To determine the optimum exposure time for bacterial reduction, 39 chicken breasts, inoculated with a pool of Salmonella ...
Kim Nury N Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 305-701, Republic of - - 2014
Fibroblast growth factor receptors (FGFRs) regulate diverse cellular behaviors that should be exquisitely controlled in space and time. We engineered an optically controlled FGFR (optoFGFR1) by exploiting cryptochrome 2, which homointeracts upon blue light irradiation. OptoFGFR1 can rapidly and reversibly control intracellular FGFR1 signaling within seconds by illumination with blue ...
Qi Dianyu - - 2014
Highly sensitive surface-enhanced Raman scattering (SERS) detection was achieved on plasmon-free TiO2 photonic artificial microarray, which can be quickly recovered under simulated solar light irradiation and repeatedly used. The sensitive detection performance is attributed to the enhanced matter-light interaction through repeated and multiple light scattering in photonic microarray. Moreover, the ...
Trupkin Santiago S IFEVA, University of Buenos Aires & - - 2014
The current consensus is that plant responses to canopy shade involve the perception of low red to far-red ratios (R:FR) by phytochrome B (phyB), which leads to the direct activation of auxin synthesis genes by PHYTOCHROME INTERACTING FACTORS (PIF). In addition to its effect on R:FR, shade also reduces irradiance, ...
Postigo Agustina A Área Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario, Suipacha 531, Rosario, - - 2014
Oropharyngeal candidiasis (OPC) is an infection frequent in immunocompromised patients. Photodynamic therapy is an alternative to conventional treatments, based on the utilization of compounds that inhibit or kill microorganisms only under the effect of light, process known as Photodynamic Inactivation (PDI). In the present study, PDI of Candida spp. by ...
Dong Fan F Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environmental and Biological Engineering, Chongqing Technology and Business University, Chongqing, 400067, P. R. China. dfctbu@126.com - - 2014
The bismuth element synthesized by a facile chemical solution method exhibited an admirable and stable photocatalytic activity towards the removal of NO under 280 nm light irradiation due to the surface plasmon resonance mediated direct photocatalysis, and most strikingly, showed a catalytic "memory" capability following illumination.
Joo Sung-Jun SJ Department of Mechanical Engineering, Hanyang University, Haengdang-dong, Seongdong-gu, Seoul 133-791, - - 2014
In this study, the size effect of copper particles on the flash light sintering of copper (Cu) ink was investigated using Cu nanoparticles (20-50 nm diameter) and microparticles (2 μm diameter). Also, the mixed Cu nano-/micro-inks were fabricated, and the synergetic effects between the Cu nano-ink and micro-ink on flash ...
Vantomme Ghislaine - - 2014
Constitutional dynamic libraries of hydrazones aAbB and acylhydrazones aAcC undergo reorganization and adaptation in response to a chemical effector (metal cations) or a physical stimulus (light). The set of hydrazones [1A1B, 1A2B, 2A1B, 2A2B] undergoes metal-loselection on addition of zinc cations which drive the amplification of Zn(1A2B)2 by selection of ...
Shima Tatsuya - - 2014
Vesicle formation is a fundamental kinetic process related to the vesicle budding and endocytosis in a cell. In the vesicle formation by artificial means, transformation of lamellar lipid aggregates into spherical architectures is a key process, and known to be prompted by e.g. heat, infrared irradiation and alternating electric field ...
Duteil Luc L Centre de Pharmacologie Clinique Appliquée à la Dermatologie (CPCAD), University hospital of Nice, - - 2014
The visible light spectrum is wide, and it can be hypothesized that all the wavelengths between 400-700nm do not induce the same photobiological effects on pigmentation. We assessed the potential pro-pigmenting effects of two single wavelengths located at both extremities of the visible spectrum: the blue/violet line (λ=415nm), and the ...
Sungkajuntranon Krisaneeya K Program in Biomedical Sciences, Khon Kaen University, - - 2014
5% Degussa P25 TiO2 was spray-coated onto black-light and white-light fluorescent lamps, using five different binders, namely DURAMAX B-1000, DURAMAX D-3005, silane-69, and two polyethylene glycols with molecular weight 1000 (PEG-1000) and 700 (PEG-700). The coated lamps were tested with Staphylococcus epidermidis, Escherichia coli, spores of Bacillus subtilis and spores ...
Li Li L Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 305-764, Republic of - - 2014
Poly(ethylene glycol)-b-poly(caprolactone) (PEG-b-PCL) micelles dually loaded with both pheophorbide a (PhA) as a photosensitizer and β-carotene (CAR) as a singlet oxygen ((1)O2) scavenger were designed to control photodynamic therapy (PDT) activity in cancer treatment. The CAR in the PhA/CAR micelles significantly diminished PhA-generated (1)O2 through direct (1)O2 scavenging, whereas the ...
Hamadani Behrang H - - 2014
An irradiance-mode absolute differential spectral response (SR) measurement system based on a light emitting diode (LED) array is described. The LEDs are coupled to an integrating sphere whose output irradiance is uniform to better than 2% over an area of 160 mm by 160 mm. SR measurements of solar cells when subject ...
Ahn Hyo-Jin HJ Interdisciplinary School of Green Energy and Low Dimensional Carbon Materials Center, UNIST, 689-798, - - 2014
The quantum-dot sensitization of a commercial TiO2 photoelectrode with maximized light harvesting capacity leads to the realization of hydrogen generation under visible light irradiation. On page 2325, J.-H. Jang and team demonstrate the greatly improved performance of an electrode with light-harvesting capability, suggesting the proposed route as an effective strategy ...
Liu Chao C Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China. - - 2014
An effective approach has been used to synthesize N-doped HTiNbO5 (denoted as N-HTiNbO5) with a better intercalation property. The synthesis of polyaniline (PANI) with N-HTiNbO5 to form PANI-N-HTiNbO5 lamellar nanocomposites by in situ polymerization using the aniline (ANI) intercalation compound ANI/N-HTiNbO5 as the intermediate has been investigated. The resulting PANI-N-HTiNbO5 ...
Uragami Chiasa C Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, - - 2014
Siphonous green algae, a type of deep-sea green algae, appear olive drab and utilize blue-green light for photosynthesis. A siphonous green alga, Codium (C.) intricatum, was isolated from Okinawa prefecture in Japan, and a clonal algal culture in filamentous form was established. The major light-harvesting antenna was analogous to the ...
Li Rong R Department of Animal Science, Aarhus University, Blichers Allé 20, DK-8830, Tjele, Denmark, - - 2014
To assess irradiance and total energy dose from different microscopes during the in-vitro embryonic developmental cycle in mouse and pig and to evaluate its effect on embryonic development and quality in pig. Spectral scalar irradiance (380-1050 nm) was measured by a fiber-optic microsensor in the focal plane of a dissection microscope, ...
Shi Jian-Wen JW Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, - - 2014
Composite photocatalysts composed of nitrogen-doped anatase TiO2 plates with exposed {001} facets (NTS) and graphene nanosheets (G) were firstly synthesized by a facile one-pot hydrothermal process. The morphologies, structural properties, and photocatalytic activities of the resultant NTS/G composites were investigated in detail. Graphene nanosheets were demonstrated play three important roles ...
Naik Anu A Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zürich - - 2014
Despite the extensive use of porphyrins in photodynamic therapy (PDT), tetraplatinated porphyrins have so far not been studied for their anticancer properties. Herein, we report the synthesis of such novel platinum-porphyrin conjugates as well as their photophysical characterization and in vitro light-induced anticancer properties. These conjugates showed only minor cytotoxicity ...
Yomoda Hiroki H Graduate School of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501 - - 2014
SRI (sensory rhodopsin I) can discriminate multiple colors for the attractant and repellent phototaxis. Studies aimed at revealing the color-dependent mechanism show that SRI is a challenging system not only in photobiology but also in photochemistry. During the photoreaction of SRI, an M-intermediate (attractant) transforms into a P-intermediate (repellent) by ...
Burdett Heidi L - - 2014
Red coralline algae are critical components of tropical reef systems, and their success and development is, at least in part, dependent on photosynthesis. However, natural variability in the photosynthetic characteristics of red coralline algae is poorly understood. This study investigated diurnal variability in encrusting Porolithon sp. and free-living Lithophyllum kotschyanum. ...
Fotiou Theodora T Laboratory of Catalytic - Photocatalytic Processes (Solar Energy - Environment), Institute of Advanced Materials, Physicochemical Processes, Nanotechnology & Microsystems, National Center for Scientific Research "Demokritos", Patriarchou Grigoriou & Neapoleos, 15310 Agia Paraskevi, Athens, - - 2014
Cyanobacteria (blue-green algae) are considered an important water quality problem, since several genera can produce toxins, called cyanotoxins that are harmful to human health. Cylindrospermopsin (CYN) is an alkaloid-like potent cyanotoxin that has been reported in water reservoirs and lakes worldwide. In this paper the removal of CYN from water ...
Hurduc Nicolae N "Gheorghe Asachi" Technical University of Iasi, Department of Natural and Synthetic Polymers, Prof. Dimitrie Mangeron Street, 73, 700050-Iasi, Romania. - - 2014
The surface relief gratings (SRGs) can be generated when azo-polymer films are exposed to laser beam interference as a result of mass migration. Despite considerable research effort over the past two decades this complex phenomenon remains incompletely understood. Here we show, for the first time, the athermal photofluidisation of azo-polysiloxane ...
Mi Yan Y Institute for Physics & IMN MacroNano® (ZIK), Technical University of Ilmenau, Prof. Schmidt-Str. 26, 98693 Ilmenau, Germany. - - 2014
Two dimensional (2D) square-like bismuth oxyiodine (BiOI) nanosheets with a thickness of about 10 nm and exposed {001} facets are obtained by a facile hydrothermal route without any surfactant and special solvent. The photocatalytic performance of as-prepared 2D square-like BiOI nanosheets is evaluated by the photodegradation of rhodamine-B (RhB), methyl ...
Takahashi Shigekazu S Department of Biomolecular Science, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, - - 2014
Water-soluble chlorophyll (Chl)-binding proteins (WSCPs) have been found in various plants. WSCPs are categorized into two classes based on their photoconvertibility: Class I (photoconvertible) and Class II (non-photoconvertible). Based on their absorption peaks, which occur in the red wavelengths, the pre- and post-photoconverted forms of Chenopodium album WSCP (CaWSCP) are ...
Chen Xiaodong - - 2014
A light-responsive delivery system has been developed. It consists of gelly microspheres made of TEMPO-oxidized Konjac Glucomannan (OKGM) polymers where the carboxyl (COO-) groups are cross-linked via ferric ions (Fe3+) and in which functional ingredients may be incorporated. By irradiation with (simulated) sunlight, the microspheres degrade thereby releasing the encapsulated ...
Xue Bin B Department of Chemistry, College of Food Science and Technology, Shanghai Ocean University, China. Electronic address: - - 2014
AgI/TiO2 nanocomposites were prepared by an ultrasound-assisted precipitation process and subsequent low-temperature (350°C) calcination. The crystal phase, morphology and optical properties of the AgI/TiO2 nanocomposites were characterized by X-ray diffraction, transmission electron microscopy and UV-vis absorption spectroscopy. After calcination, the crystallite size of AgI nanoparticles in the AgI/TiO2 nanocomposites decreased, ...
Buzzá H H HH São Carlos Institute of Physics, University of São Paulo, Avenida Trabalhador São Carlense, 400, CEP: 13566-590, Caixa Postal: 369, São Carlos, SP, Brazil. Electronic address: - - 2014
Photodynamic Therapy (PDT) is a local treatment that requires a photosensitizing agent, light and molecular oxygen. With appropriate illumination, the photosensitizer is excited and produces singlet oxygen that is highly reactive and cytotoxic. Tumor vascular network is essential for the tumor growth and the understanding of vascular response mechanisms enables ...
Wu Zhiguang - - 2014
We describe an approach to modulating the on-demand motion of catalytic polymer-based nanorockets via near-infrared (NIR) laser irradiation. The polymer nanorocket was fabricated by the template-assisted layer-by-layer assembly and subsequently deposition of platinum nanoparticles inside and a thin gold shell outside. Then a mixed monolayer of a tumor-targeted peptide and ...
Pacia Michał M Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland. - - 2014
Attempts to increase the stability of photocatalytically active nanodispersions of titanium dioxide over a wide range of pH (3-10) were undertaken. Polyethylene glycols (PEGs) with different molecular weights and polyoxyethylenesorbitan monooleate (Tween® 80) were tested as stabilizing agents of TiO2 nanoparticles. The results of DLS measurements proved the stabilizing effect ...
Yang Yang Y Department of Prosthodontics, Peking University School of Stomatology, Haidian District, Beijing, 100081, People's Republic of - - 2014
To evaluate whether ultraviolet (UV) light irradiation of smooth and rough zirconia disks enhances its biocompatibility with human gingival fibroblasts (HGFs). Zirconia disks were divided into four groups: smooth control (S-C), smooth with UV light treatment (S-UV), rough control (R-C), and rough with UV light treatment (R-UV). The surface morphology ...
Hu Sheng-Peng SP School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150080, China. cy_xu@hit.edu.cn - - 2014
We report the solvothermal synthesis of hierarchical structures of orthorhombic Sb2WO6 and their implementation as a visible-light-driven photocatalyst for the degradation of Rhodamine B. The obtained hierarchical structures constructed by tiny nanosheets are doughnut-like flat ellipsoids with concaves in the centres, and with typical sizes of 1.3 μm in length, ...
Suzuki Kosuke K Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656 - - 2014
The development of visible-light-induced photocatalysts for chemoselective functional group transformations has received considerable attention. Polyoxometalates (POMs) are potential materials for efficient photocatalysts because their properties can be precisely tuned by changing their constituent elements and structures and by the introduction of additional metal cations. Furthermore, they are thermally and oxidatively ...
Hotta Yasuhisa Y Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan. - - 2014
Photoisomerizations of a newly designed azobenzene derivative reversibly change its self-assembly in a solution to form twisted supramolecular nanofibers and amorphous aggregates, respectively. When irradiating the sample solution with audible sound, the former assembly exhibits a LD response due to its hydrodynamic orientation, but the latter one is LD silent, ...
Kobzeva Tatiana V TV Institute of Chemical Kinetics and Combustion SB RAS, 630090, Novosibirsk, - - 2014
The luminescent system of higher luminous fungi is not fully understood and the enzyme/substrate pair of the light emission reaction has not been isolated. It was suggested that luminescence of fungi involves oxidase-type enzymes, and reactive oxygen species are important for fungal light production. Generation of reactive oxygen species can ...
Steinhaus Johannes J Faculty of Technology, Department of Production Engineering, Tomas Bata University in Zlín, Zlín, Czech Republic; Department of Natural Sciences, Bonn-Rhine-Sieg University of Applied Sciences, Rheinbach, - - 2014
The aim of this study is to investigate depth dependent changes of polymerization process and kinetics of visible light-curing (VLC) dental composites in real-time. The measured quantity - "ion viscosity" determined by dielectric analysis (DEA) - provides the depth dependent reaction rate which is correlated to the light intensity available ...
Takai Akinori A Institute of Life and Environmental Sciences, Osaka Shin-Ai College , 6-2-28 Tsurumi, Tsurumi-ku, Osaka 538-0053 , Japan - - 2014
Abstract Medaka fish (Oryzias latipes) were whole-bodily treated with various doses of mitomycin C (MMC), ethylmethanesulfonate (EMS), cyclophosphamide (CP), diethylnitrosamine (DEN), or colchicine (COL) for 24 h, and the frequency of micronucleated cells (MNCs) was measured in the gills at 24 and 48 h after treatment. In the present experiments, MMC, CP, ...
Sahoo Jugal Kishore JK WestCHEM, Department of Pure and Applied Chemistry, Thomas Graham Building, 295 Cathedral Street, Glasgow G1 1XL, UK. - - 2014
We report on a supramolecular self-assembly system that displays coupled light switching, biocatalytic condensation/hydrolysis and gelation. The equilibrium state of this system can be regulated by light, favouring in situ formation, by protease catalysed peptide synthesis, of self-assembling trans- in ambient light; however, irradiation with UV light gives rise to ...
Dong Jie J School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, - - 2014
Polymer nanoparticles are prepared by self-assembly of visible light and pH sensitive perylene-functionalized copolymers which are synthesized by quaternization between 1-(bromomethyl)perylene and the dimethylaminoethyl units of poly(dimethylaminoethyl methacrylate) (PDMAEMA). The perylene-containing polymethacrylate segments afford the system visible light responsiveness and the unquaternized PDMAEMA segments afford the system pH responsiveness. The ...
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