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https://www.readbyqxmd.com/read/28339739/unabated-occupational-risk-in-a-patient-with-rheumatoid-pulmonary-fibrosis
#1
V K Holden, S J Kligerman, T G Hastings, S E Hines
Background: This case highlights the importance of considering hypersensitivity pneumonitis (HP) in the differential diagnosis of interstitial lung disease (ILD) and of obtaining an occupational history so that remediable risk factors may be identified and managed. Aims: To report a case of a chicken sexer with severe rheumatoid arthritis (RA) who developed progressively worsening dyspnoea and restrictive lung disease associated with pulmonary fibrosis. Methods: Clinical investigation included physical examination, occupational history, pulmonary function tests (PFTs), chest imaging and bronchoalveolar lavage (BAL), as well as serological tests including standard IgE bird feather mixture and local IgG precipitin preparation to chicken excrement...
February 23, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28339639/comparative-structural-study-of-the-zona-radiata-of-the-eggs-of-three-gobiobotia-cyprinidae-teleostei-endemic-korean-freshwaters
#2
Woong Sun Choi, Jae Goo Kim, Jong Young Park
The genus Gobiobotia in Korea has only three species and all are endemic benthic freshwater fishes. Their oocytes were observed by light microscopy, scanning electron microscopy and transmission electron microscopy to investigate the characteristics of the zona radiata (ZR), a non-cellular envelope, which surrounds the egg. Various developmental cells appeared during the spawning season. During the yolk vesicles stage, which yolk vesicles are spherically developed in periphery of the cytoplasm and gradually increase in its number and size, the ZR becomes visible between its follicular layer and ooplasm...
February 15, 2017: Microscopy
https://www.readbyqxmd.com/read/28339267/orbital-edge-states-in-a-photonic-honeycomb-lattice
#3
M Milićević, T Ozawa, G Montambaux, I Carusotto, E Galopin, A Lemaître, L Le Gratiet, I Sagnes, J Bloch, A Amo
We experimentally reveal the emergence of edge states in a photonic lattice with orbital bands. We use a two-dimensional honeycomb lattice of coupled micropillars whose bulk spectrum shows four gapless bands arising from the coupling of p-like photonic orbitals. We observe zero-energy edge states whose topological origin is similar to that of conventional edge states in graphene. Additionally, we report novel dispersive edge states in zigzag and armchair edges. The observations are reproduced by tight-binding and analytical calculations, which we extend to bearded edges...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28335330/carbon-nanotube-cnt-honeycomb-cell-area-dependent-optical-reflectance
#4
Junthorn Udorn, Akimitsu Hatta, Hiroshi Furuta
The relationship between the physical structure of carbon nanotube (CNT) honeycomb structures and their total, diffuse, and specular reflectance is investigated for the first time. It is found that CNT honeycomb structures with average cell areas of smaller than 30 μm² show a higher total reflectance. Particularly, a thinner, highly packed CNT (buckypaper) film, along with a larger wall height and higher ratio of wall height to cell area, markedly increase the total reflectance for cell areas smaller than 30 μm², which means that a higher total area of buckypapers in CNT walls and bottom areas increases the total reflectance, including the diffuse reflectance...
November 7, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28331315/improved-chemotherapeutic-efficacy-of-injectable-chrysin-encapsulated-by-copolymer-nanoparticles
#5
Kyoung Mee Kim, Hyun Kyung Lim, Sang Hee Shim, Joohee Jung
Chrysin is a flavone that is found in several plants and in honeycomb and possesses various biological activities. However, its low solubility means it has poor bioavailability, which must be resolved to enable its pharmaceutical applications. In the present study, chrysin was incorporated into methoxy poly(ethylene glycol)-β-polycaprolactone nanoparticles (chrysin-NPs) using the oil-in-water technique in order to overcome problems associated with chrysin. The properties of chrysin-NPs were analyzed, and their anticancer effects were investigated in vitro and in vivo...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28328167/silicene-a-promising-anode-for-lithium-ion-batteries
#6
REVIEW
Jincheng Zhuang, Xun Xu, Germanas Peleckis, Weichang Hao, Shi Xue Dou, Yi Du
Silicene, a single-layer-thick silicon nanosheet with a honeycomb structure, is successfully fabricated by the molecular-beam-epitaxy (MBE) deposition method on metallic substrates and by the solid-state reaction method. Here, recent progress on the features of silicene that make it a prospective anode for lithium-ion batteries (LIBs) are discussed, including its charge-carrier mobility, chemical stability, and metal-silicene interactions. The electrochemical performance of silicene is reviewed in terms of both theoretical predictions and experimental measurements, and finally, its challenges and outlook are considered...
March 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28318313/proposal-of-a-calculation-method-to-determine-the-structural-components-contribution-on-the-deceleration-of-a-passenger-compartment-based-on-the-energy-derivative-method
#7
Kei Nagasaka, Koji Mizuno, Daisuke Ito, Naoya Saida
OBJECTIVE: In car crashes, the passenger compartment deceleration influences the occupant loading significantly. Hence, it is important to consider how each structural component deforms in order to control the passenger compartment deceleration. In frontal impact tests, the passenger compartment deceleration depends on the energy absorption property of the front structures. However, at this point in time there are few papers describing the component's quantitative contributions on the passenger compartment deceleration...
March 20, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28306312/dirac-fermions-in-borophene
#8
Baojie Feng, Osamu Sugino, Ro-Ya Liu, Jin Zhang, Ryu Yukawa, Mitsuaki Kawamura, Takushi Iimori, Howon Kim, Yukio Hasegawa, Hui Li, Lan Chen, Kehui Wu, Hiroshi Kumigashira, Fumio Komori, Tai-Chang Chiang, Sheng Meng, Iwao Matsuda
Honeycomb structures of group IV elements can host massless Dirac fermions with nontrivial Berry phases. Their potential for electronic applications has attracted great interest and spurred a broad search for new Dirac materials especially in monolayer structures. We present a detailed investigation of the β_{12} sheet, which is a borophene structure that can form spontaneously on a Ag(111) surface. Our tight-binding analysis revealed that the lattice of the β_{12} sheet could be decomposed into two triangular sublattices in a way similar to that for a honeycomb lattice, thereby hosting Dirac cones...
March 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28295111/orbitally-driven-low-thermal-conductivity-of-monolayer-gallium-nitride-gan-with-planar-honeycomb-structure-a-comparative-study
#9
Zhenzhen Qin, Guangzhao Qin, Xu Zuo, Zhihua Xiong, Ming Hu
Two-dimensional (2D) materials with graphene as a representative have been intensively studied for a long time. Recently, monolayer gallium nitride (ML GaN) with honeycomb structure was successfully fabricated in experiments, generating enormous research interest for its promising applications in nano- and opto-electronics. Considering all these applications are inevitably involved with thermal transport, systematic investigation of the phonon transport properties of 2D GaN is in demand. In this paper, by solving the Boltzmann transport equation (BTE) based on first-principles calculations, we performed a comprehensive study of the phonon transport properties of ML GaN, with detailed comparison to bulk GaN, 2D graphene, silicene and ML BN with similar honeycomb structure...
March 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/28294255/photocatalytic-oxygen-evolution-from-low-bandgap-conjugated-microporous-polymer-nanosheets-a-combined-first-principles-calculation-and-experimental-study
#10
Lei Wang, Yangyang Wan, Yanjun Ding, Yuchen Niu, Yujie Xiong, Xiaojun Wu, Hangxun Xu
Nanostructured semiconducting polymers have emerged as a very promising class of metal-free photocatalytic materials for solar water splitting. However, they generally exhibit low efficiency and lack the ability to utilize long-wavelength photons in a photocatalytic oxygen evolution reaction (OER). Here, based on first-principles calculations, we reveal that the two-dimensional (2D) aza-fused conjugated microporous polymer (aza-CMP) with a honeycomb network is a semiconductor with novel layer-dependent electronic properties...
March 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/28294111/casimir-force-phase-transitions-in-the-graphene-family
#11
Pablo Rodriguez-Lopez, Wilton J M Kort-Kamp, Diego A R Dalvit, Lilia M Woods
The Casimir force is a universal interaction induced by electromagnetic quantum fluctuations between any types of objects. The expansion of the graphene family by adding silicene, germanene and stanene (2D allotropes of Si, Ge, and Sn), lends itself as a platform to probe Dirac-like physics in honeycomb staggered systems in such a ubiquitous interaction. We discover Casimir force phase transitions between these staggered 2D materials induced by the complex interplay between Dirac physics, spin-orbit coupling and externally applied fields...
March 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28292902/tunable-moir%C3%A3-bands-and-strong-correlations-in-small-twist-angle-bilayer-graphene
#12
Kyounghwan Kim, Ashley DaSilva, Shengqiang Huang, Babak Fallahazad, Stefano Larentis, Takashi Taniguchi, Kenji Watanabe, Brian J LeRoy, Allan H MacDonald, Emanuel Tutuc
According to electronic structure theory, bilayer graphene is expected to have anomalous electronic properties when it has long-period moiré patterns produced by small misalignments between its individual layer honeycomb lattices. We have realized bilayer graphene moiré crystals with accurately controlled twist angles smaller than 1° and studied their properties using scanning probe microscopy and electron transport. We observe conductivity minima at charge neutrality, satellite gaps that appear at anomalous carrier densities for twist angles smaller than 1°, and tunneling densities-of-states that are strongly dependent on carrier density...
March 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28291345/electrochemically-assisted-self-assembly-technique-for-the-fabrication-of-mesoporous-metal-organic-framework-thin-films-composing-of-3d-hexagonally-packed-crystals-with-2d-honeycomb-like-mesopores
#13
Saber Alizadeh, Davood Nematollahi
In this work, we introduce a novel and general strategy for an environmental friendly fabrication of mMOF thin films via electrochemically assisted self-assembly (EASA) technique. Implementation of this procedure as a one-step, addi-tive-free and versatile protocol lead to in-situ simultaneous synthesis and deposition of mesoporous architectures of MOFs at room temperature under green conditions, without need to any base, pretreatment or chemical modification of underlying surface. Our procedure, provides a controllable method for the synthesis of mMOF thin films (modified electrodes) consisted of hollow 3D-hexagonally packed crystals with 2D-honeycomb-like mesopores in the wall of cavi-ty, which grow perpendicularly on to any of conducting surface...
March 14, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28290566/mesoporous-nico2o4-networks-with-enhanced-performance-as-counter-electrodes-for-dye-sensitized-solar-cells
#14
Chenle Zhang, Libo Deng, Peixin Zhang, Xiangzhong Ren, Yongliang Li, Tingshu He
The performance of a dye-sensitized solar cell (DSSC) is strongly influenced by the catalytic performance of its counter electrode (CE) materials. Platinum (Pt) is conventionally used as the CE for DSSCs, but it is precious and is readily corroded by the iodide/triiodide electrolyte. Herein, mesoporous NiCo2O4 networks with different types of building blocks were prepared by electrospinning of a composite solution followed by annealing in air, and their performances as CEs in DSSCs were investigated. The honeycomb-like NiCo2O4 exhibited better performance than the nanotube ones, showing a photoelectric conversion efficiency of 7...
March 14, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28287400/topological-magnon-bands-in-ferromagnetic-star-lattice
#15
Solomon Owerre
The experimental observation of topological magnon bands and thermal Hall effect in a kagom\'e lattice ferromagnet Cu(1-3, bdc) has inspired the search for topological magnon effects in various insulating ferromagnets that lack an inversion center allowing a Dzyaloshinskii-Moriya (DM) spin-orbit interaction. The star lattice (also known as the decorated honeycomb lattice) ferromagnet is an ideal candidate for this purpose because it is a variant of the kagom\'e lattice with additional links that connect the up-pointing and down-pointing triangles...
March 13, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28284491/hexagonal-grafts-in-mosaicplasty-biomechanical-comparison-of-standard-cylindrical-and-novel-hexagonal-grafts-in-calf-cadaver-model
#16
Adem Kar, Nihat Demirhan Demirkıran, Hasan Tatari, Bora Uzun, Fatih Ertem
OBJECTIVE: Cylindrical grafts are currently used to cover defected area in mosaicplasty. However, there are some difficulties with cylindrical grafts, such as potential dead space between grafts and insufficient coverage. Hexagonal graft (honeycomb model) was created and evaluated in this biomechanical study. Hypothesis was that harvesting grafts with hexagonal shape, which has the best volume geometry characteristics in nature, would be biomechanically advantageous and provide superior pull-out strength...
March 8, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28280363/discrimination-of-serous-cystadenoma-from-mucinous-cystadenoma-in-the-pancreas-with-contrast-enhanced-ultrasonography-a-prospective-study-in-61-patients
#17
Ya Sun, Fubo Zhou, Fangyi Liu, Yanyan Hu, Shuilian Tan, Ping Liang, Enqiang Linghu, Xiaoling Yu
OBJECTIVES: The preoperative diagnosis between serous cystadenomas (SCAs) and mucinous cystadenomas (MCAs) in pancreas is significant due to their completely different biological behaviors. The purpose of our study was to examine and compare detailed contrast-enhanced ultrasonography (CEUS) images of SCAs and MCAs and to determine whether there are significant findings that can contribute to the discrimination between these two diseases. METHODS: From April 2015 to June 2016, 61 patients (35 patients with SCAs and 26 patients with MCAs) were enrolled in this study...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28266559/edge-magnetism-of-heisenberg-model-on-honeycomb-lattice
#18
Wen-Min Huang, Toshiya Hikihara, Yen-Chen Lee, Hsiu-Hau Lin
Edge magnetism in graphene sparks intense theoretical and experimental interests. In the previous study, we demonstrated the existence of collective excitations at the zigzag edge of the honeycomb lattice with long-ranged Néel order. By employing the Schwinger-boson approach, we show that the edge magnons remain robust even when the long-ranged order is destroyed by spin fluctuations. Furthermore, in the effective field-theory limit, the dynamics of the edge magnon is captured by the one-dimensional relativistic Klein-Gordon equation...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28265618/an-sd-2-hybridized-transition-metal-monolayer-with-a-hexagonal-lattice-reconstruction-between-the-dirac-and-kagome-bands
#19
Baozeng Zhou, Shengjie Dong, Xiaocha Wang, Kailiang Zhang, Wenbo Mi
Graphene-like two-dimensional materials have garnered tremendous interest as emerging device materials due to their remarkable properties. However, their applications in spintronics have been limited by the lack of intrinsic magnetism. Here, we perform an ab initio simulation on the structural and electronic properties of several transition-metal (TM) monolayers (TM = Cr, Mo and W) with a honeycomb lattice on a 1/3 monolayer Cl-covered Si(111) surface. Due to the template effect from the halogenated Si substrate, the TM-layers will be maintained in an expanded lattice which is nearly 60% larger than that of the freestanding case...
March 7, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28264721/densitometric-and-local-histogram-based-analysis-of-computed-tomography-images-in-patients-with-idiopathic-pulmonary-fibrosis
#20
Samuel Y Ash, Rola Harmouche, Diego Lassala Lopez Vallejo, Julian A Villalba, Kris Ostridge, River Gunville, Carolyn E Come, Jorge Onieva Onieva, James C Ross, Gary M Hunninghake, Souheil Y El-Chemaly, Tracy J Doyle, Pietro Nardelli, Gonzalo V Sanchez-Ferrero, Hilary J Goldberg, Ivan O Rosas, Raul San Jose Estepar, George R Washko
BACKGROUND: Prior studies of clinical prognostication in idiopathic pulmonary fibrosis (IPF) using computed tomography (CT) have often used subjective analyses or have evaluated quantitative measures in isolation. This study examined associations between both densitometric and local histogram based quantitative CT measurements with pulmonary function test (PFT) parameters and mortality. In addition, this study sought to compare risk prediction scores that incorporate quantitative CT measures with previously described systems...
March 7, 2017: Respiratory Research
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