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https://www.readbyqxmd.com/read/28231430/combined-high-stretchability-and-gas-barrier-in-hydrogen-bonded-multilayer-nanobrick-wall-thin-films
#1
Shuang Qin, Yixuan Song, Michael Floto, Jaime C Grunlan
Hydrogen-bonded multilayer thin films are very stretchable, but their gas barrier properties are modest compared to more traditional ionically-bonded assemblies. In an effort to improve the gas barrier of poly(ethylene oxide) (PEO) - poly(acrylic acid) (PAA) multilayer films, without sacrificing stretchability, montmorillonite (MMT) clay platelets were combined with PAA and alternately deposited with PEO. A ten bilayer PEO/PAA+MMT film (432 nm thick), deposited on a 1 mm PU substrate, resulted in a 54X reduction in oxygen transmission rate after exposure to a 20% strain...
February 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28229557/ultrabroadband-mos2-photodetector-with-spectral-response-from-445-to-2717-nm
#2
Ying Xie, Bo Zhang, Shuxian Wang, Dong Wang, Aizhu Wang, Zeyan Wang, Haohai Yu, Huaijin Zhang, Yanxue Chen, Mingwen Zhao, Baibiao Huang, Liangmo Mei, Jiyang Wang
Photodetectors with excellent detecting properties over a broad spectral range have advantages for the application in many optoelectronic devices. Introducing imperfections to the atomic lattices in semiconductors is a significant way for tuning the bandgap and achieving broadband response, but the imperfection may renovate their intrinsic properties far from the desire. Here, by controlling the deviation from the perfection of the atomic lattice, ultrabroadband multilayer MoS2 photodetectors are originally designed and realized with the detection range over 2000 nm from 445 nm (blue) to 2717 nm (mid-infrared)...
February 23, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28229088/glutathione-induces-gaba-release-through-p2x7r-activation-on-m%C3%A3-ller-glia
#3
Hércules Rezende Freitas, Ricardo A de Melo Reis
The retinal tissue of warm-blooded vertebrates performs surprisingly complex and accurate transduction of visual information. To achieve precision, a multilayered neuroglia structure is established throughout the embryonic development, and the presence of radial Müller (glial) cells ensure differentiation, growth and survival for the neuronal elements within retinal environment. It is assumed that Müller cells serve as a dynamic reservoir of progenitors, capable of expressing transcription factors, differentiating and proliferating as either neuronal or glial cells depending on extrinsic cues...
2017: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/28228003/electrochemical-formation-of-multilayer-sno2-sb-x-o-y-coating-in-complex-electrolyte
#4
Antonina Maizelis, Boris Bairachniy
The multilayer antimony-doped tin dioxide coating was obtained by cathodic deposition of multilayer metal-hydroxide coating with near 100-nm thickness layers on the alloy underlayer accompanied by the anodic oxidation of this coating. The potential regions of deposition of tin, antimony, tin-antimony alloy, and mixture of this metals and their hydroxides in the pyrophosphate-tartrate electrolyte were revealed by the cyclic voltammetric method. The possibility of oxidation of cathodic deposit consisting of tin and Sn(II) hydroxide compounds to the hydrated tin dioxide in the same electrolyte was demonstrated...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28227499/promotion-and-guidance-of-neural-network-formation-on-su-8-photoresist-microchannels-adjusted-with-multilayer-films
#5
Yung-Chiang Liu, I-Chi Lee, Kin-Fong Lei, Yung-Chiang Liu, I-Chi Lee, Kin-Fong Lei, Yung-Chiang Liu, I-Chi Lee, Kin-Fong Lei
Induction of neural stem/progenitor cells (NSPCs) and establishment of neural network are important issues on neural engineering. In this work, a platform was designed to control and evaluate the differentiation of NSPCs, neurite direction, and to promote the neurite outgrowth. Polyelectrolyte multilayer (PEM) films provide surface properties by and have been used to regulate NSPCs differentiation in our previous study. Herein, a culture platform composed of SU-8 microchannel and PEM films was designed to achieve the goal of promoting NSPCs differentiation and to evaluate the effect of PEM films on the guidance of neural network formation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227118/shear-wave-elastography-using-wigner-ville-distribution-a-simulated-multilayer-media-study
#6
Pooya Sobhe Bidari, Javad Alirezaie, Jahan Tavakkoli, Pooya Sobhe Bidari, Javad Alirezaie, Jahan Tavakkoli, Javad Alirezaie, Jahan Tavakkoli
Shear Wave Elastography (SWE) is a quantitative ultrasound-based imaging modality for distinguishing normal and abnormal tissue types by estimating the local viscoelastic properties of the tissue. These properties have been estimated in many studies by propagating ultrasound shear wave within the tissue and estimating parameters such as speed of wave. Vast majority of the proposed techniques are based on the cross-correlation of consecutive ultrasound images. In this study, we propose a new method of wave detection based on time-frequency (TF) analysis of the ultrasound signal...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227059/implementation-of-a-smartphone-as-a-wireless-gyroscope-platform-for-quantifying-reduced-arm-swing-in-hemiplegie-gait-with-machine-learning-classification-by-multilayer-perceptron-neural-network
#7
Robert LeMoyne, Timothy Mastroianni, Robert LeMoyne, Timothy Mastroianni, Robert LeMoyne, Timothy Mastroianni
Natural gait consists of synchronous and rhythmic patterns for both the lower and upper limb. People with hemiplegia can experience reduced arm swing, which can negatively impact the quality of gait. Wearable and wireless sensors, such as through a smartphone, have demonstrated the ability to quantify various features of gait. With a software application the smartphone (iPhone) can function as a wireless gyroscope platform capable of conveying a gyroscope signal recording as an email attachment by wireless connectivity to the Internet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227024/sensor-data-quality-processing-for-vital-signs-with-opportunistic-ambient-sensing
#8
Ibrahim Sadek, Jit Biswas, Zhu Yongwei, Zhang Haihong, Jayachandran Maniyeri, Chen Zhihao, Teo Ju Teng, Ng Soon Huat, Mounir Mokhtari, Ibrahim Sadek, Jit Biswas, Zhu Yongwei, Zhang Haihong, Jayachandran Maniyeri, Chen Zhihao, Teo Ju Teng, Ng Soon Huat, Mounir Mokhtari
Opportunistic ambient sensing involves placement of sensors appropriately so that intermittent contact can be made unobtrusively for gathering physiological signals for vital signs. In this paper, we discuss the results of our quality processing system used to extract heart rate from ballisto-cardiogram signals obtained from a micro-bending fiber optic sensor pressure mat. Visual inspection is used to label data into informative and non-informative classes based on their heart rate information. Five classifiers are employed for the classification process, i...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226838/realistic-motor-unit-placement-in-a-cylindrical-hd-semg-generation-model
#9
Vincent Carriou, Jeremy Laforet, Sofiane Boudaoud, Mariam Al Harrach, Vincent Carriou, Jeremy Laforet, Sofiane Boudaoud, Mariam Al Harrach, Jeremy Laforet, Sofiane Boudaoud, Vincent Carriou, Mariam Al Harrach
The aim of this work is to assess an automatic optimized algorithm for the positioning of the Motor Units (MUs) within a multilayered cylindrical High Density surface EMG (HD-sEMG) generation model representing a skeletal muscle. The multilayered cylinder is composed of three layers: muscle, adipose and skin tissues. For this purpose, two different algorithms will be compared: an unconstrained random and a Mitchell's Best Candidate (MBC) placements, both with uniform distribution for the MUs positions. These algorithms will then be compared by their fiber density within the muscle and by using a classical amplitude descriptor, the Root-Mean-Square (RMS) amplitude value obtained from 64 HD-sEMG signals recorded by an 8×8 electrode grid of circular electrode during one contraction at 70% Maximum Voluntary Contraction (MVC) in both simulation and experimental conditions for the Biceps Brachii (BB) muscle...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225570/washless-method-enables-multilayer-coating-of-an-aggregation-prone-nanoparticulate-drug-delivery-system-with-enhanced-yields-colloidal-stability-and-scalability
#10
Lamees Nayef, Rafael Castiello, Maryam Tabrizian
Aggregation is frequently encountered during coating nanoparticles, especially when the core is not solid and the coating polyelectrolytes are weak. Here, the coating of a nanoliposome with two weak polyelectrolytes, alginate and chitosan, is investigated. First, quartz crystal microbalance with dissipation, atomic force microscopy, scanning electron microscopy, and energy dispersive spectroscopy analyses confirm the feasibility of firm adsorption of up to 16 layers of weak polyelectrolytes to the liposomal surface...
February 22, 2017: Macromolecular Bioscience
https://www.readbyqxmd.com/read/28223073/immunotherapy-comes-of-age-immune-aging-checkpoint-inhibitors
#11
REVIEW
Rawad Elias, Theodoros Karantanos, Elizabeth Sira, Kevan L Hartshorn
Immune checkpoint inhibitors (ICIs) are based on the understanding that there are multilayered checks and balances which can be manipulated to unleash already existing, but paralyzed, immune responses to cancer. These agents are safer and more efficacious than classic cytotoxic drugs making them a very attractive therapeutic option, especially in older adults. Current available data do not suggest significant age-associated differences in the clinical profile of ICIs. It must be noted, however, that there is still relatively little information on the use of ICIs in adults over 75years of age and aging is associated with a decline in the immune system or "immunosenescence" which theoretically can reduce the efficacy of these immune based therapies...
February 17, 2017: Journal of Geriatric Oncology
https://www.readbyqxmd.com/read/28222596/stacking-dependent-electronic-structure-of-trilayer-graphene-resolved-by-nanospot-angle-resolved-photoemission-spectroscopy
#12
Changhua Bao, Wei Yao, Eryin Wang, Chaoyu Chen, José Avila, Maria Carmen Asensio, Shuyun Zhou
The crystallographic stacking order in multilayer graphene plays an important role in determining its electronic structure. In trilayer graphene, rhombohedral stacking (ABC) is particularly intriguing, exhibiting a fat band with an electric-field tunable band gap. Such electronic structure is distinct from simple hexagonal stacking (AAA) or typical Bernal stacking (ABA), and is promising for nanoscale electronics, optoelectronics applications. So far clean experimental electronic spectra on the first two stackings are missing because the samples are usually too small in size (µm or nm scale) to be resolved by conventional angle-resolved photoemission spectroscopy (ARPES)...
February 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28221057/-understanding-the-neural-basis-of-cognitive-bias-modification-as-a-clinical-treatment-for-depression-correction-to-eguchi-et-al-2016
#13
(no author information available yet)
: Reports an error in "Understanding the neural basis of cognitive bias modification as a clinical treatment for depression" by Akihiro Eguchi, Daniel Walters, Nele Peerenboom, Hannah Dury, Elaine Fox and Simon Stringer (Journal of Consulting and Clinical Psychology, Advanced Online Publication, Dec 19, 2016, np). In the article, there was an error in the Discussion section's first paragraph for Implications and Future Work. The in-text reference citation for Penton-Voak et al. (2013) was incorrectly listed as "Blumenfeld, Preminger, Sagi, and Tsodyks (2006)"...
March 2017: Journal of Consulting and Clinical Psychology
https://www.readbyqxmd.com/read/28220875/theory-of-topological-insulator-waveguides-polarization-control-and-the-enhancement-of-the-magneto-electric-effect
#14
J A Crosse
Topological insulators subject to a time-reversal-symmetry-breaking perturbation are predicted to display a magneto-electric effect that causes the electric and magnetic induction fields to mix at the material's surface. This effect induces polarization rotations of between ≈1-10 mrad per interface in an incident plane-polarized electromagnetic wave normal to a multilayered structure. Here we show, theoretically and numerically, that by using a waveguide geometry with a topological insulator guide layer and magneto-dielectric cladding it is possible to achieve rotations of ≈100 mrad and generate an elliptical polarization with only a three-layered structure...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28218540/perovskite-like-organic-inorganic-hybrid-lead-iodide-with-a-large-organic-cation-incorporated-within-the-layers
#15
Chen-Jie Que, Chong-Jiao Mo, Zhao-Qi Li, Guang-Lin Zhang, Qin-Yu Zhu, Jie Dai
A great effort has been made to investigate 2D perovskites to improve the stability and controllability in the fabrication of photoelectronic devices. As far as we know, only small organic cations such as methylammonium can incorporate into the multilayered perovskite structure except the cations sandwiched between the inorganic layers. We report here a new layered lead iodide, (H2Aepz)3Pb4I14 (1), where larger organic cations, bis-protonated 2-(2-aminoethyl)pyrazole (Aepz), not only were sandwiched between the inorganic layers but also were incorporated within the perovskite-like PbI layered structure...
February 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28218499/fine-tuning-sortase-mediated-immobilization-of-protein-layers-on-surfaces-using-sequential-deprotection-and-coupling
#16
Maryam Raeeszadeh-Sarmazdeh, Ranganath Parthasarathy, Eric T Boder
Increasing interest in protein immobilization on surfaces has heightened the need for techniques enabling layer-by-layer protein attachment. Here, we report a technique for controlling enzyme-mediated immobilization of layers of protein on the surface using a genetically-encoded protecting group. An enterokinase-cleavable peptide sequence was inserted at the N-terminus of bifunctional fluorescent proteins containing Sortase A substrate recognition tags at both ends to control Sortase A-mediated protein immobilization on the surface layer-by-layer...
February 20, 2017: Biotechnology Progress
https://www.readbyqxmd.com/read/28218442/template-free-growth-of-well-ordered-silver-nano-forest-ceramic-metamaterial-films-with-tunable-optical-responses
#17
Junhua Gao, Xingzhi Wu, Qiuwu Li, Shiyu Du, Feng Huang, Lingyan Liang, Hongliang Zhang, Fei Zhuge, Hongtao Cao, Yinglin Song
Currently, the limitations of conventional methods for fabricating metamaterials composed of well-aligned nanoscale inclusions either lack the necessary freedom to tune the structural geometry or are difficult for large-area synthesis. In this Communication, the authors propose a fabrication route to create well-ordered silver nano forest/ceramic composite single-layer or multi-layer vertically stacked structures, as a distinctive approach to make large-area nanoscale metamaterials. To take advantage of direct growth, the authors fabricate single-layer nanocomposite films with a well-defined sub-5 nm interwire gap and an average nanowire diameter of ≈3 nm...
February 20, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28218329/dopamine-assisted-fixation-of-drug-loaded-polymeric-multilayers-to-osteoarticular-implants-for-tuberculosis-therapy
#18
Dan Li, Litao Li, Yunlong Ma, Yaping Zhuang, Dawei Li, Hong Shen, Xing Wang, Fei Yang, Yuanzheng Ma, Decheng Wu
Currently, the major issues in the treatment of osteoarticular tuberculosis (TB) after implant placement are low drug concentration at the infected focus and drug resistance resulting from the long-term chemotherapy. The application of drug-loaded polymeric multilayers on implantable devices offers a promising solution to the problems. Herein, a poly(ethylene glycol)-based hydrogel film embedded with isoniazid (INH)-loaded alginate microparticles was fixed to Ti implants via adhesive polydopamine, subsequently capped by poly(lactic-co-glycolic acid) membranes for the sustained and localized delivery of the anti-TB drug...
February 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28216908/role-of-progenitor-cell-producing-normal-vagina-by-metaplasia-in-laparoscopic-peritoneal-vaginoplasty
#19
Pravin N Mhatre, Hemraj R Narkhede, P Amol Pawar, P Jyoti Mhatre, Das Dhanjit Kumar
CONTEXT: Host of vaginoplasty techniques have been described. None has been successful in developing normal vagina. Laparoscopic peritoneal vaginoplasty (LPV) is performed in Mayer-Rokitansky-Küster-Hauser syndrome (MRKHS) culminating in normal vagina. AIMS: This study aims to confirm normal development of neovagina by anatomical and functional parameters of histology, cytology, and ultrasonography (USG) in LPV. To identify peritoneal progenitor cell by OCT4/SOX2 markers...
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28216477/how-should-i-treat-recurrent-restenosis-with-underexpanded-multilayered-struts-after-repeated-complex-bifurcation-stenting
#20
Akihito Tanaka, Neil Ruparelia, Hiroyoshi Kawamoto, Azeem Latib, Antonio Colombo, Goran Stankovic, Yves Louvard
No abstract text is available yet for this article.
February 20, 2017: EuroIntervention
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