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https://www.readbyqxmd.com/read/28937995/enzootic-mosquito-vector-species-at-equine-encephalitis-transmission-foci-in-the-rep%C3%A3%C2%BAblica-de-panam%C3%A3
#1
Rolando Torres, Rafael Samudio, Jean-Paul Carrera, Josue Young, Ricardo Márquez, Lisbeth Hurtado, Scott Weaver, Luis Fernando Chaves, Robert Tesh, Lorenzo Cáceres
The identification of mosquito vector species present at arboviral enzootic transmission foci is important to understand transmission eco-epidemiology and to propose and implement prevention and control strategies that reduce vector-borne equine encephalitis transmission. The goal of this study was to identify mosquito species potentially involved in the transmission of enzootic equine encephalitis, in relation to their abundance and diversity at three endemic regions in the República de Panamá. We sampled adult mosquitoes during the dry and rainy season of Panamá...
2017: PloS One
https://www.readbyqxmd.com/read/28936866/light-trapping-characteristics-of-ag-nanoparticles-for-enhancing-the-energy-conversion-efficiency-in-hybrid-solar-cells
#2
Zhi-Qiang Fan, Wei-Jia Zhang, Qiang Ma, Lanqin Yan, Lihua Xu, Yao-Long Fu
In this paper, we investigated the optical and electrical characteristics of the hybrid solar cells using silicon pyramid/Ag nanoparticles and nanowire/Ag nanoparticles nanocomposite structures, which are obtained by the Ag-assisted electro-less etching method. And we introduced the application of the physical and chemical properties for Ag nanoparticles on four kinds of solar cells: silicon pyramid, silicon pyramid /PEDOT:PSS silicon nanowrie, silicon nanowire/PEDOT:PSS. We simulated these structures with the absorption for different parameters...
September 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28934263/temporal-dynamics-and-leishmania-infantum-infection-prevalence-of-phlebotomus-perniciosus-diptera-phlebotominae-in-highly-endemic-areas-of-visceral-leishmaniasis-in-tunisia
#3
Meriem Benabid, Jamila Ghrab, Adel Rhim, Rania Ben-Romdhane, Karim Aoun, Aïda Bouratbine
Phlebotomus perniciosus is one of the major vectors of Leishmania infantum in the Mediterranean basin. The aim of this work was (i) to provide information about abundance and temporal dynamics of this Larroussius species in a hot spot area of visceral leishmaniasis in Tunisia, (ii) to detect L. infantum DNA in wild caught female sandflies and (iii) to measure Phlebotomus perniciosus infection rate throughout the active season. Sandflies were collected monthly during one year using CDC miniature light-traps in house and in animal shelters...
2017: PloS One
https://www.readbyqxmd.com/read/28933819/superior-plasmonic-photodetectors-based-on-au-mos2-core-shell-heterostructures
#4
Yuan Li, Jennifer G DiStefano, Akshay A Murthy, Jeffrey D Cain, Eve D Hanson, Qianqian Li, Fernando C Castro, Xinqi Chen, Vinayak P Dravid
Integrating plasmonic materials into semiconductor media provides a promising approach for applications such as photo-sensing and solar energy conversion. The resulting structures introduce enhanced light-matter interactions, additional charge trap states, and efficient charge-transfer pathways for light-harvesting devices, especially when an intimate interface is built between the plasmonic nanostructure and semiconductor. Herein, we report the development of plasmonic photodetectors using Au@MoS2 heterostructures - an Au nanoparticle core that is encapsulated by a CVD-grown multilayer MoS2 shell, which perfectly realizes the intimate and direct interfacing of Au and MoS2...
September 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28931815/silicon-single-photon-avalanche-diodes-with-nano-structured-light-trapping
#5
Kai Zang, Xiao Jiang, Yijie Huo, Xun Ding, Matthew Morea, Xiaochi Chen, Ching-Ying Lu, Jian Ma, Ming Zhou, Zhenyang Xia, Zongfu Yu, Theodore I Kamins, Qiang Zhang, James S Harris
Silicon single-photon avalanche detectors are becoming increasingly significant in research and in practical applications due to their high signal-to-noise ratio, complementary metal oxide semiconductor compatibility, room temperature operation, and cost-effectiveness. However, there is a trade-off in current silicon single-photon avalanche detectors, especially in the near infrared regime. Thick-junction devices have decent photon detection efficiency but poor timing jitter, while thin-junction devices have good timing jitter but poor efficiency...
September 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28931814/optical-trapping-of-otoliths-drives-vestibular-behaviours-in-larval-zebrafish
#6
Itia A Favre-Bulle, Alexander B Stilgoe, Halina Rubinsztein-Dunlop, Ethan K Scott
The vestibular system, which detects gravity and motion, is crucial to survival, but the neural circuits processing vestibular information remain incompletely characterised. In part, this is because the movement needed to stimulate the vestibular system hampers traditional neuroscientific methods. Optical trapping uses focussed light to apply forces to targeted objects, typically ranging from nanometres to a few microns across. In principle, optical trapping of the otoliths (ear stones) could produce fictive vestibular stimuli in a stationary animal...
September 20, 2017: Nature Communications
https://www.readbyqxmd.com/read/28929451/comparison-of-nanohole-type-and-nanopillar-type-patterned-metallic-electrodes-incorporated-in-organic-solar-cells
#7
Wenyan Wang, Yanxia Cui, Kin Hung Fung, Ye Zhang, Ting Ji, Yuying Hao
Both the nanohole- and nanopillar-type patterned metallic electrodes (PMEs) have been introduced in organic solar cells (OSCs) for improving device performances experimentally, but there is few work addressing the similarities and differences between them. In this theoretical work, we systematically compare the impact of the nanohole- and nanopillar-type PMEs on the performance of an OSC based on hybridized cavity resonances. By optimizing the geometrical parameters of each PME, we obtained an interesting result that the integrated absorption efficiencies in the active layer with different optimized PMEs are almost the same (both are equal to 82...
September 19, 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28926278/planar-optical-nano-antennas-resolve-cholesterol-dependent-nanoscale-heterogeneities-in-the-plasma-membrane-of-living-cells
#8
Raju Regmi, Pamina Martina Winkler, Valentin Flauraud, Kyra Borgman, Carlo Manzo, Juergen Brugger, Herve Rigneault, Jerome Wenger, Maria F Garcia-Parajo
Optical nano-antennas can efficiently confine light into nanoscopic hotspots enabling single-molecule detection sensitivity at biological relevant conditions. This innovative approach to breach the diffraction limit offers a versatile platform to investigate the dynamics of individual biomolecules in living cell membranes and their partitioning into cholesterol-dependent lipid nanodomains. Here, we present optical nano-antenna arrays with accessible surface hotspots to study the characteristic diffusion dynamics of phosphoethanolamine (PE) and sphingomyelin (SM) in the plasma membrane of living cells at the nanoscale...
September 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28925381/cavity-qed-with-hybrid-nanocircuits-from-atomic-like-physics-to-condensed-matter-phenomena
#9
Audrey Cottet, Matthieu C Dartiailh, Matthieu M Desjardins, Tino Cubaynes, Lauriane C Contamin, Matthieu Delbecq, Jérémie J Viennot, Laure E Bruhat, Benoit Douçot, Takis Kontos
Circuit QED techniques have been instrumental in manipulating and probing with exquisite sensitivity the quantum state of superconducting quantum bits coupled to microwave cavities. Recently, it has become possible to fabricate new devices in which the superconducting quantum bits are replaced by hybrid mesoscopic circuits combining nanoconductors and metallic reservoirs. This mesoscopic QED provides a new experimental playground to study the light-matter interaction in electronic circuits. Here, we present the experimental state of the art of mesoscopic QED and its theoretical description...
September 19, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28925264/space-environment-effects-on-flexible-low-voltage-organic-thin-film-transistors
#10
Laura Basiricò, Alberto Francesco Basile, Piero Cosseddu, Simone Gerardin, Tobias Cramer, Marta Bagatin, Andrea Ciavatti, Alessandro Paccagnella, Annalisa Bonfiglio, Beatrice Fraboni
Organic electronic devices fabricated on flexible substrates are promising candidates for applications in environments where flexible, light-weight and radiation hard materials are required. In this work, device parameters as threshold voltage, charge mobility and trap density of 13-Bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) based OTFTs have been monitored performing electrical measurements before and after irradiation by high-energy protons. The observed reduction of charge carrier mobility following irradiation can be only partially ascribed to the increased trap density...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28921659/ligature-induced-peri-implantitis-and-periodontitis-in-mice
#11
Sarah Hiyari, Ryan Wong, Aline Yaghsezian, Azadi Naghibi, Sotirios Tetradis, Paulo M Camargo, Flavia Q Pirih
AIM: Peri-implantitis (PI), inflammation around dental implants, shares characteristics with periodontitis (PD). However, PI is more difficult to control, treat, and detailed pathophysiology is unclear. We aimed to compare PI and PD progression utilizing a murine model. MATERIALS AND METHODS: Four-week-old male C57BL/6J mice had their left maxillary molars extracted. Implants were placed in healed extraction sockets and osseointegrated. Ligatures were tied around the implant and second molar...
September 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28921570/behavioural-responses-of-infective-stage-copepodids-of-the-salmon-louse-lepeophtheirus-salmonis-copepoda-caligidae-to-host-related-sensory-cues
#12
D M Fields, A B Skiftesvik, H I Browman
The salmon louse (Lepeophtheirus salmonis [Krøyer]) is an ectoparasitic copepod that causes disease in farmed Atlantic salmon (Salmo salar) and may play a role in the decline of some wild salmonid populations. Controlling lice infestations is a major cost for the salmon industry; this has stimulated the pursuit of alternative approaches to controlling them. One such approach involves determining, and then disrupting, the sensory cues used by the parasite to find its host. In this context, we examined the behavioural responses of lice copepodids to light flicker-simulating light reflecting from the sides of the salmon host and/or the shadows cast by fish passing overhead-and water-soluble chemicals released from the skin of the salmon...
September 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28920666/a-softoxometalate-k6-5cu-oh-8-5-h2o-7-5-0-5-k3pw12o40-n-n-1348-2024-as-an-efficient-inorganic-material-for-co2-reduction-with-concomitant-water-oxidation
#13
Santu Das, Saurabh Kumar, Somenath Garai, Ramudu Pochamoni, Shounik Paul, Soumyajit Roy
An immediate challenge for chemists is to devise different methods to trap chemical energy using light by reduction of carbon dioxide to a transportable fuel. To reach this goal the major obstacle lies in finding a suitable material that is abundant and possesses catalytic power to effect such reduction reaction and perform this reduction reaction without using any external photosensitizer. Here we report first time a softoxometalate, based on {[K6.5Cu(OH)8.5(H2O)7.5]0.5[K3PW12O40]} metal oxide framework which is stable in reaction condition that effectively performs photochemical CO2 reduction reaction in water with a very high turnover number of 613 and TOF of 47...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28917772/disordered-photonics-coupled-with-embedded-nano-au-plasmonics-inducing-efficient-photocurrent-enhancement
#14
Jing Li, Junling Wang, Zhihui Dai, Hongbo Li
Spatial order used to be considered as a benefit for photonics; but recently the study of disorder has broken into people's horizons for its strong random scattering of light. In this work, disordered photonics coupled with plasmonics for efficiently enhanced photocurrent was first investigated using Au-ZnO nanowire array as a model. The embedded Au-ZnO nanowire array was facilely prepared using a template-free electrodeposition method. On the optimal plasmonic substrate, the photocurrent of disorder-enhanced Au-ZnO nanowire array is about 20-fold that of ZnO nanowire array...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28916095/review-novel-sensing-strategies-for-bacterial-detection-based-on-active-and-passive-methods-driven-by-external-field
#15
REVIEW
Shiho Tokonami, Takuya Iida
For sustainable human life, biosensing systems for contaminants or disease-causing bacteria are crucial for food security, environmental improvement, and disease prevention. With an aim of enhancing the sensitivity and detection speed, many researchers have developed efficient detection methods for target bacteria. In this review, we discuss recent topics related to active and passive bacterial detection methods, including (1) optical approaches with unique functional nano- and micro-structures, and (2) electrical approaches involving mechanical modulation and electrochemical reactions...
October 2, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915480/facile-fabrication-of-mediator-free-z-scheme-photocatalyst-of-phosphorous-doped-ultrathin-graphitic-carbon-nitride-nanosheets-and-bismuth-vanadate-composites-with-enhanced-tetracycline-degradation-under-visible-light
#16
Yaocheng Deng, Lin Tang, Guangming Zeng, Jiajia Wang, Yaoyu Zhou, Jingjing Wang, Jing Tang, Longlu Wang, Chengyang Feng
To realize the sustainable employment of solar energy in contaminant degradation and environmental recovery, design and development of an efficient photocatalyst is urgently needed. Herein, a novel direct Z-scheme composite photocatalysts consist of phosphorous-doped ultrathin g-C3N4 nanosheets (PCNS) and bismuth vanadate (BiVO4) are developed via a one-pot impregnated precipitation method. The as-prepared hybrid nanocomposite was utilized for the degradation tetracycline (TC) under visible light irradiation...
September 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28914168/synthesis-of-cr-3-doped-tio2-nanoparticles-characterization-and-evaluation-of-their-visible-photocatalytic-performance-and-stability
#17
Sandra Yadira Mendiola-Alvarez, Jorge Luis Guzmán-Mar, Gemma Turnes-Palomino, Fernando Maya-Alejandro, Adolfo Caballero-Quintero, Aracely Hernández-Ramírez, Laura Hinojosa-Reyes
Cr(3+)-doped TiO2 nanoparticles (Ti-Cr) were synthesized by a simple and fast microwave assisted sol-gel method. Ti-Cr catalyst was characterized by X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS), N2 adsorption-desorption analysis, Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), photoluminescence (PL) spectroscopy, X-ray photoelectron spectroscopy (XPS) and zetametry. Ti-Cr is mesoporous and exhibits a specific surface area of 54...
September 15, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28910074/highly-luminescent-phase-stable-cspbi3-perovskite-quantum-dots-achieving-near-100-absolute-photoluminescence-quantum-yield
#18
Feng Liu, Yaohong Zhang, Chao Ding, Syuusuke Kobayashi, Takuya Izuishi, Naoki Nakazawa, Taro Toyoda, Takeshi Ohta, Shuzi Hayase, Takashi Minemoto, Kenji Yoshino, Songyuan Dai, Qing Shen
Perovskite quantum dots (QDs) as a new type of colloidal nanocrystals have gained significant attention for both fundamental research and commercial applications owing to their appealing optoelectronic properties and excellent chemical processability. For their wide range of potential applications, synthesizing colloidal QDs with high crystal quality is of crucial importance. However, like most common QD systems such as CdSe and PbS, those reported perovskite QDs still suffer from a certain density of trapping defects, giving rise to detrimental non-radiative recombination centers and thus quenching luminescence...
September 14, 2017: ACS Nano
https://www.readbyqxmd.com/read/28905490/intrinsic-broadband-white-light-emission-from-ultrastable-cationic-lead-halide-layered-materials
#19
Zewen Zhuang, Chengdong Peng, Guiyang Zhang, Huimin Yang, Jinlin Yin, Honghan Fei
We report a family of cationic lead halide layered materials, formulated as [Pb2X2]2+[-O2C(CH)2CO2-] (X = F, Cl, and Br), exhibiting pronounced broadband white-light emission in bulk form. These well-defined PbX-based structures achieve an external quantum efficiency as high as 11.8%, which is comparable to the highest reported value (~9%) for broadband phosphors based on layered organolead halide perovskites. More importantly, our cationic materials are long-sought ultrastable lead halide materials, which overcome the air/moisture-sensitivity problems of lead perovskites...
September 14, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28904092/map1b-light-chain-modulates-synaptic-transmission-via-ampa-receptor-intracellular-trapping
#20
Rocío Palenzuela, Yolanda Gutiérrez, Jonathan E Draffin, Argentina Lario, Marion Benoist, José A Esteban
The regulated transport of AMPA-type glutamate receptors (AMPARs) to the synaptic membrane is a key mechanism to determine the strength of excitatory synaptic transmission in the brain. In this work, we uncovered a new role for the microtubule-associated protein MAP1B, in modulating the access of AMPARs to the postsynaptic membrane. Using mice and rats of either sex, we show that MAP1B light chain (LC) accumulates in the somatodendritic compartment of hippocampal neurons, where it forms immobile complexes on microtubules that limit vesicular transport...
September 13, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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