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Yin Taofei T Robert D. Berlin Center for Cell Analysis and Modeling, University of Connecticut Health Center, 400 Farmington Avenue, Farmington, CT, 06030, - - 2015
Recent developments in optogenetics have extended optical control of signaling to intracellular proteins, including Rac, a small G protein in the Rho family. A blue light-sensing LOV (light, oxygen, or voltage) domain derived from Avena sativa (oat) phototropin was fused to the N-terminus of a constitutively active mutant of Rac, ...
Dalton Brian E BE Department of Biology, University of Maryland, Baltimore County, MD 21250, USA Department of Biology, University of Maryland, College Park, MD 20742, USA - - 2014
Vision frequently mediates critical behaviours, and photoreceptors must respond to the light available to accomplish these tasks. Most photoreceptors are thought to contain a single visual pigment, an opsin protein bound to a chromophore, which together determine spectral sensitivity. Mechanisms of spectral tuning include altering the opsin, changing the chromophore ...
Tang Zi-Rong ZR College of Chemistry, New Campus, Fuzhou University, Fuzhou 350108, P. R. - - 2014
Boron-doped reduced graphene oxide (B-RGO) synthesized by a facile one-step reflux route is able to exhibit significantly higher photocatalytic activity than non-doped RGO under visible light irradiation. New insights accounting for this photocatalytic activity improvement are discussed, which is distinctly different from the case of B-RGO nanoribbons under UV light ...
Al-Niaimi Firas - - 2014
Abstract Acne vulgaris is a common condition which remains challenging to treat in some cases. Laser and light-based therapies offer an alternative to medical therapies with the advantage of high compliance and relatively low side-effect profile. Light-based therapies in acne exert their effects through photochemical, photothermal, or a combination of ...
Xu Xiao-Yu XY Department of Chemistry, Tongji University, Shanghai 200092, China. - - 2014
One gallium carboxylate of MOF (Ga2(OH)4(C9O6H4) or MIL-124) has been synthesized by a facile solvothermal approach, and the luminescence was tuned by encapsulating lanthanide(iii)(Ln(3+)) cations into the channels through the active-COOH group in MIL-124 post-synthesis. PXRD, TEM, FTIR, and TGA were performed to determine the structure and thermal stability of ...
Burgess Helen J - - 2014
There is a need for the accurate assessment of circadian phase outside of the clinic/laboratory, particularly with the gold standard dim light melatonin onset (DLMO). We tested a novel kit designed to assist in saliva sampling at home for later determination of the DLMO. The home kit includes objective measures ...
Tunuguntla Ramya H RH Biology and Biotechnology Division, Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California, 94550, USA; Materials Science and Chemical Engineering Department, University of California Davis, Davis, California, 95616, USA; The Molecular Foundry, Materials Sciences Division - - 2014
Light-activated bioelectronic silicon nanowire transistor devices are made by fusing proteoliposomes containing a bacteriorhodopsin proton pump onto the nanowire surface. Under green-light illumination bR pumps protons toward the nanowire, and the pH gradient developed by the pump changes the transistor output. Furthermore, co-assembly of small biomolecules that alter the bilayer ...
Khan M Farooq - - 2014
Molybdenum disulfide (MoS2), which is one of representative transition metal dichalcogenides, can be made as an atomically thin layer while preserving its semiconducting characteristics. We fabricated single-, bi-, and multi-layer MoS2 field-effect transistor (FET) by the mechanical exfoliation method and studied the effect of deep ultraviolet (DUV) light illumination. The ...
Von Dollen Paul P Materials Department, University of California, Santa Barbara, Eng II., Bldg. 503, Rm. 1355, Santa Barbara, CA 93106-5050 - - 2014
Significant gains in energy savings now underway can be traced to a single invention-the blue light emitting diode. GaN-based blue LED technology not only resulted in efficient white light sources, but continues to enable a host of applications and scientific inquiries. The researchers primarily responsible for the development of the ...
Osanai Takashi T RIKEN, Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan; PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, - - 2014
Cyanobacteria possess circadian clocks consisting of KaiABC proteins and circadian rhythm must closely relate to the primary metabolism. A histidine kinase, SasA, interacts with KaiC to transduce circadian signals and widely regulates transcription in Synechococcus sp. PCC 7942, although the involvement of SasA in primary metabolism has not been demonstrated ...
Usherenko Svetlana - - 2014
BackgroundRegulated proteolysis by the proteasome is one of the fundamental mechanisms used in eukaryotic cells to control cellular behavior. Efficient tools to regulate protein stability offer synthetic influence on molecular level on a selected biological process. Optogenetic control of protein stability has been achieved with the photo-sensitive degron (psd) module. ...
Franco Lilian Pereira - - 2014
We describe the use of cadmium telluride quantum dots (CdTe QDs) as antennas for the photosensitization of nitric oxide release from a ruthenium nitrosyl complex with visible light excitation. The CdTe QDs were capped with mercaptopropionic acid to make them water-soluble and the ruthenium nitrosyl complex was cis-[Ru(NO)(4-ampy)(bpy)2]3+ (Ru-NO bpy ...
Gracitelli Carolina P B CP Ophthalmology, Unifesp, 3365 Lebon Drive, apto 301, San Diego, California, 92122, United States - - 2014
Purpose: To assess the integrity of intrinsically photosensitive retinal ganglion cells (ipRGCs) using the pupillary light reflex in glaucoma patients. Methods: A cross-sectional study was conducted including 76 eyes from 38 patients with primary open-angle glaucoma and 36 eyes from 18 volunteers. Patients were tested in the dark with light ...
Chen Jing-De JD Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, - - 2014
A single-junction polymer solar cell with an efficiency of 10.1% is demonstrated by using deterministic aperiodic nanostructures for broadband light harvesting with optimum charge extraction. The performance enhancement is ascribed to the self-enhanced absorption due to collective effects, including the pattern-induced anti-reflection, light scattering as well as surface plasmonic resonance, ...
Zhang Yanbin Y Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, P. R. China. - - 2014
We report herein a visible light induced generation of a carbanion via double-SET and its application in cyclopropanation of alkenes. This new synthetic approach to form cyclopropane derivatives was conducted under mild conditions, using sunlight in open air, showing the features such as environmental benignness and an easy to handle ...
Cunningham Graeme G School of Physics, CRANN and AMBER Research Centres, Trinity College Dublin, University of Dublin, Dublin 2, - - 2014
We have used solution processing techniques to fabricate thin-film networks of nanosheets of six different transition metal dichalcogenides; MoS2, MoSe2, MoTe2, WS2, WSe2 and WTe2. We have measured both the dark conductivity and the photoconductivity under broad band illumination in the intensity range from 0-1500 W m(-2). The dark conductivity ...
Ghedotti Michael J MJ Department of Biology, Regis University, Denver, Colorado, - - 2014
Bioluminescent organs that provide ventral camouflage are common among fishes in the meso-bathypelagic zones of the deep sea. However, the anatomical structures that have been modified to produce light vary substantially among different groups of fishes. Although the anatomical structure and evolutionary derivation of some of these organs have been ...
Li Rongzhen - - 2014
We propose an ultra-thin metasurface of the metal rectangular split-ring resonators (MRSRR) array which can modulate and analyze the wavefront of circularly polarized light efficiently. An incident circularly polarized light could be converted into the corresponding cross-polarized light which would be bent to±23<sup>°</sup>at a wavelength of 808nm for the normal ...
Cheney Frank F School of Optometry, Indiana University, Bloomington, - - 2014
We examined the effect of transverse chromatic aberration (TCA) on detection acuity for white-light interference fringes seen in Maxwellian view at various orientations and locations in the visual field. A circular patch (3.5° diameter, 3.2 log Trolands) of nominally high-contrast fringes was produced on the retina by a commercial instrument ...
Fukaminato Tuyoshi - - 2014
Photoactive molecules that reversibly switch upon visible light irradiation are one of the most attractive targets for biological as well as imaging applications. One possible approach to prepare such photoswitches is to extend -conjugation length of molecules and shift the absorption bands to longer wavelengths. Although several attempts have been ...
Wu Zhao-Feng ZF State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. China. - - 2014
The bpy, dpe and dppe were introduced as auxiliary ligands, respectively, to construct three magnesium-1,4-NDC coordination polymers (Mg-CPs) that exhibited tunable photoluminescence (PL) and direct white-light emission upon varying the excitation light.
Yin Peng-Fei PF Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, - - 2014
CdS nanoflake arrays exhibit unprecedented light absorption capability, and they can serve as a scaffold to load thin organic absorbers for extraordinarily high light absorption. Resultantly, the hybrid solar cell consisting of NFAs and organic absorber yields a ten-time high short-circuit photocurrent compared to the counterpart device with a common ...
Kim Jungkil Francisco - - 2014
Porous silicon (PSi) is recognized as an attractive building block for photonic devices due to its novel properties including high ratio of surface to volume and high light absorption. We firstly report near-ultraviolet (UV)-sensitive graphene/PSi photodetectors (PDs) fabricated by utilizing graphene and PSi as a carrier collector and a photoexcitation ...
Mahoney Kaitlyn M - - 2014
Self-immolative aryl phthalate esters were conjugated with cleavable masking groups sensitive to light and hydrogen peroxide. The phthalate linker releases the highly fluorescent dye 7-hydroxycoumarin upon exposure to light or H2O2, respectively, leading to an increase in fluorescence. The light sensitive aryl phthalate ester is demonstrated as a pro-fluorophore in ...
Maity Chandan C Advanced Soft Matter, Department of Chemical Engineering, Delft University of Technology, Julianalaan 136, 2628 BL Delft (The - - 2014
Spatial control over the self-assembly of synthetic molecular fibers through the use of light-switchable catalysts can lead to the controlled formation of micropatterns made up of hydrogel structures. A photochromic switch, capable of reversibly releasing a proton upon irradiation, can act as a catalyst for in situ chemical bond formation ...
Zemcov Michael M Department of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA. Jet Propulsion Laboratory (JPL), National Aeronautics and Space Administration (NASA), Pasadena, CA 91109, - - 2014
Extragalactic background light (EBL) anisotropy traces variations in the total production of photons over cosmic history and may contain faint, extended components missed in galaxy point-source surveys. Infrared EBL fluctuations have been attributed to primordial galaxies and black holes at the epoch of reionization (EOR) or, alternately, intrahalo light (IHL) ...
Wang Lin L State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, P. R. China. - - 2014
This communication reports a room temperature visible-light-driven protocol for the C-H difluoromethylenephosphonation of arenes and heteroarenes. Using commercially available diethyl bromodifluoromethyl phosphonate as a precursor of difluoromethyl radical, fac-Ir(ppy)3 as a photosensitizer and a 3 W blue LED as a light source, an array of aromatic compounds containing difluoromethylenephosphonyl groups ...
Song Enming E Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of - - 2014
By repeating oxidation and subsequent wet chemical etching, we produced ultra-thin silicon nanomembranes down to 10 nm based on silicon-on-insulator structures in a controllable way. The electrical property of such silicon nanomembranes is highly influenced by their contacts with metal electrodes, in which Schottky barriers (SBs) can be tuned by ...
Richter Florian F Humboldt-Universität zu Berlin, Institut für Biologie, Biophysikalische Chemie, Berlin, Germany. florian.richter.1@hu-berlin.de - - 2014
Automation can vastly reduce the cost of experimental labor and thus facilitate high experimental throughput, but little off-the-shelf hardware for the automation of illumination experiments is commercially available. Here, we use inexpensive open-source electronics to add programmable illumination capabilities to a multimode microplate reader. We deploy this setup to characterize ...
Roldán-Carmona Cristina - - 2014
In their simplest form, light-emitting electrochemical cells (LECs) consists in a thin films of an ionic organic semiconductor sandwiched between two electrodes. Due to the large density of ions in the active layer, the applied potential initially drops at the electrode/active layer interfaces enhancing charge injection. For this reason, LECs ...
Cai Hongyuan H Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, P.R. China. tangqunwei@ouc.edu.cn - - 2014
Pursuing a high power conversion efficiency with no sacrifice of cost-effectiveness has been a persistent objective for dye-sensitized solar cells (DSSCs). One promising solution to this impasse is increased light harvesting. Previous efforts in light harvesting have been made on setting blocking layers or reflecting layers, or adding a light ...
Yue Du D National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China. chendaimei@cugb.edu.cn - - 2014
A visible-light-sensitive Bi2MoO6-BiOCl heterojunction photocatalyst was synthesized via a hydrothermal process. The as-prepared Bi2MoO6-BiOCl composite shows an irregular multi-plate structure with length ranging from 100 nm to 1 μm, indicating a possibility of the plate-on-plate structure by placing Bi2MoO6 and BiOCl nanoplates over each other. The Bi2MoO6-BiOCl photocatalyst not only ...
Elton-Marshall Tara T Social and Epidemiological Research Department, Centre for Addiction and Mental Health, London, Ontario, Canada School of Public Health and Health Systems, University of Waterloo, Waterloo, Ontario, - - 2014
The sensory belief that 'light/low tar' cigarettes are smoother can also influence the belief that 'light/low tar' cigarettes are less harmful. However, the 'light' concept is one of several factors influencing beliefs. No studies have examined the impact of the sensory belief about one's own brand of cigarettes on perceptions ...
Darus Libertus - - 2014
This paper describes the detrimental effect of photosynthetically evolved oxygen on anodic current generation in the presence of riboflavin upon illumination of a mixed phototrophic culture enriched from a freshwater pond at +0.6 V vs. standard hydrogen electrode. In the presence of riboflavin, the phototrophic biomass in the anodic compartment ...
Larndorfer Christoph C Institute of Analytical Chemistry and Food Chemistry, Stremayrgasse 9/II, 8010 Graz, Austria. christoph.larndorfer@gmail.com - - 2014
This study highlights possible errors in luminescence lifetime measurements when using bright optical oxygen sensors with high excitation light intensities. An analysis of the sensor with a mathematical model shows that high light intensities will cause a depopulation of the ground state of the luminophore, which results in a non-linear ...
Röder Sebastian - - 2014
The major light-harvesting chlorophyll a/b complex (LHCII) of the photosynthetic apparatus in green plants consists of a membrane protein and numerous non-covalently bound pigments that make up about one third of the molecular mass of the pigment-protein complex. Due to this high pigment density, LHCII is potentially interesting as a ...
Upputuri Paul Kumar - - 2014
White light interferometry is a widely used tool to extend the unambiguous measurement range of a monochromatic interferometer. In this work, we discuss Hilbert transformation analysis of a single white light interferogram acquired with a single-chip color CCD camera for step height measurement which lies beyond the unambiguous range of ...
Li Honglei - - 2014
In this paper, we first experimentally demonstrate a 550 Mbit/s real-time visible light communication (VLC) system based on nonreturn-to-zero on-off keying (NRZ-OOK) modulation of a commercial phosphorescent white light LED. The 3-dB modulation bandwidth of such devices is only a few megahertz. We proposed an analog pre-emphasis circuit based on ...
Bramante Joseph J Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, Indiana 46556, - - 2014
The paucity of old millisecond pulsars observed at the galactic center of the Milky Way could be the result of dark matter accumulating in and destroying neutron stars. In regions of high dark matter density, dark matter clumped in a pulsar can exceed the Schwarzschild limit and collapse into a ...
Jimenez Angelica A a Department of Chemistry , Texas Southern University , Houston , Texas , - - 2014
Polycyclic aromatic hydrocarbons (PAHs) are suspected to be carcinogenic and mutagenic. This study describes the presence of PAHs in light, medium and dark roasted coffee including instant and decaffeinated brands. Total PAHs concentration was related to the degree of roasting with light roasted coffee showing the least and dark roasted ...
Kobzeva Tatiana V - - 2014
This month'ss featured article; "Stimulation of luminescence of mycelium of luminous fungus Neonothopanus nambi by ionizing radiation" is a joint contribution from two experimental teams from Novosibirsk and Krasnoyarsk, Russia. The work demonstrates that a moderate dose of X-irradiation reproducibly causes a substantial boost in light production from a wide ...
Hovis Jeffery K JK Civil Aerospace Medical Institute, Federal Aviation Administration, Oklahoma City, OK, - - 2014
Hovis JK, Milburn NJ, Nesthus TE. Protan response times to red lights in a mildly hypoxic environment. Aviat Space Environ Med 2014; 85:1078-85. This study was conducted to determine whether protans have slower reaction times to red lights than individuals with normal color vision and to identify whether protan reaction ...
Wakabayashi Ichiro I Department of Environmental and Preventive Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, - - 2014
ABSTRACT. Light-to-moderate alcohol drinking has been shown to reduce the risk of type 2 diabetes, for which obesity is a primary risk factor. The aim of this study was to determine whether drinking alcohol influences the relationship between obesity and hyperglycemia. The relationships of adiposity indices with hyperglycemia were compared ...
Levi-Polyachenko Nicole N Department of Plastic and Reconstructive Surgery, Wake Forest University Health Sciences , Winston-Salem, North Carolina - - 2014
Abstract Purpose: The aim of this study was to demonstrate that multi-wall carbon nanotubes can be functionalised with antibodies to group A streptoccocus (GAS) for targeted photothermal ablation of planktonic and biofilm residing bacteria. Antibodies for GAS were covalently attached to carboxylated multi-wall carbon nanotubes and incubated with either planktonic ...
Patel Alpesh D AD Department of Oral Biology, Georgia Regents University, Augusta, GA, U.S.A. Division of Orthodontics, The Ohio State University, Columbus, OH, - - 2014
Recent studies suggest that light in the UVA range (320-400 nm) activates signaling pathways that are anti-inflammatory, antioxidative and play a critical role in protection against cancer. These effects have been attributed to NF-E2-related factor (NRF2)-mediated up-regulation of 'phase 2' genes that neutralize oxidative stress and metabolize electrophiles. We had ...
Findlay Neil J NJ WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, Glasgow, G1 1XL, - - 2014
Combining a yellow-emitting organic material with a blue-emitting inorganic light-emitting device (LED) provides a hybrid white-light LED. This approach, demonstrated by R. W. Martin, P. J. Skabara, and co-workers on page 7290, couples very efficient blue emission with the flexibility, fast modulation speed, and cost effectiveness of the organic material. ...
Yang J J Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117576. Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research link, Singapore 117602. NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, #02-01, Singapore - - 2014
Well-ordered silicon nanowires (SiNWs) are applied as surface-enhanced Raman scattering (SERS) substrates. Laser interference lithography is used to fabricate large-area periodic nanostructures. By controlling the reaction time of metal assisted chemical etching, various aspect ratios of SiNWs are generated. Ag nanoparticles are decorated on the substrates via redox reaction to ...
Yang Ying Y Department of Biology and Biotechnology, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA, 01609, - - 2014
Ettlia oleoabundans, a freshwater unicellular green microalga, was grown under different light qualities ± carbon dioxide-enriched air to determine the combined effects on growth and lipid production of this oleaginous species. Keeping total light intensity constant, when a portion of the cool white was replaced by red, volumetric lipid yield ...
Barreto Humberto M HM Laboratory of Research in Microbiology, Department of Parasitology and Microbiology, Federal University of Piauí, Teresina (PI), - - 2014
An ethanol extract and different partition fractions obtained from Lippia origanoides H.B.K. were assayed for light-mediated activity against strains of Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli). Identical assays were conducted with and without exposure to UV-A (400-315 nm) light to test for light enhanced activity. The ethanol ...
Dungel Peter P Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, AUVA Research Center, Austrian Cluster for Tissue Regeneration, Vienna, - - 2014
Low-level light therapy (LLLT) has been revealed as a potential means to improve wound healing. So far, most studies are being performed with irradiation in the red to near-infrared spectra. Recently, we showed that blue light (470 nm) can significantly influence biological systems such as nitric oxide (NO) metabolism and is ...
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