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Smart device*

Milan Shrestha, Gih-Keong Lau
This Letter presents a tunable window device based on microscopic wrinkling of a transparent elastomeric surface. "Crack-free" microscopic wrinkling of a 50-nm ZnO thin film is possible on a highly adhesive acrylic elastomer membrane (VHB 4910) upon partial release from a large radial pre-stretch of membrane. This ZnO-based tunable window device demonstrates reversible tunability between transparent and translucent states. At zero compression with a flat surface, the device is transparent with a 93% in-line transmittance at 550-nm wavelength...
October 1, 2016: Optics Letters
Pina Violano, Linda Roney, Kirsten Bechtel
BACKGROUND: Pedestrians distracted by digital devices or other activities are at a higher risk of injury as they cross streets. We sought to describe the incidence of pedestrians distracted by digital devices or other activities at two highly traveled urban intersections after the implementation of a pedestrian safety intervention at one of the intersections. METHODS: This was an observational field study of two urban intersections. Two investigators were stationed at each of the four corners of the intersection...
December 2015: Injury Epidemiology
Ming Dai, Xueliang Xiao, Xin Chen, Haoming Lin, Wanqing Wu, Siping Chen
With the increasing aging population as well as health concerns, chronic heart disease has become the focus of public attention. A comfortable, low-powered, and wearable electrocardiogram (ECG) system for continuously monitoring the elderly's ECG signals over several hours is important for preventing cardiovascular diseases. Traditional ECG monitoring apparatus is often inconvenient to carry, has many electrodes to attach to the chest, and has a high-power consumption. There is also a challenge to design an electrocardiograph that satisfies requirements such as comfort, confinement, and compactness...
October 14, 2016: Australasian Physical & Engineering Sciences in Medicine
Andreas K Triantafyllidis, Vassilis G Koutkias, Ioanna Chouvarda, Ilia Adami, Angelina Kouroubali, Nicos Maglaveras
Sensor-based health systems can often become difficult to use, extend and sustain. The authors propose a framework for designing sensor-based health monitoring systems aiming to provide extensible and usable monitoring services in the scope of pervasive patient care. The authors' approach relies on a distributed system for monitoring the patient health status anytime-anywhere and detecting potential health complications, for which healthcare professionals and patients are notified accordingly. Portable or wearable sensing devices measure the patient's physiological parameters, a smart mobile device collects and analyses the sensor data, a Medical Center system receives notifications on the detected health condition, and a Health Professional Platform is used by formal caregivers in order to review the patient condition and configure monitoring schemas...
September 2016: Healthcare Technology Letters
Dennis Sheberla, John C Bachman, Joseph S Elias, Cheng-Jun Sun, Yang Shao-Horn, Mircea Dincă
Owing to their high power density and superior cyclability relative to batteries, electrochemical double layer capacitors (EDLCs) have emerged as an important electrical energy storage technology that will play a critical role in the large-scale deployment of intermittent renewable energy sources, smart power grids, and electrical vehicles. Because the capacitance and charge-discharge rates of EDLCs scale with surface area and electrical conductivity, respectively, porous carbons such as activated carbon, carbon nanotubes and crosslinked or holey graphenes are used exclusively as the active electrode materials in EDLCs...
October 10, 2016: Nature Materials
Wen-Chiang Hong, Chieh-Jen Ku, Rui Li, Siamak Abbaslou, Pavel Reyes, Szu-Ying Wang, Guangyuan Li, Ming Lu, Kuang Sheng, Yicheng Lu
Building integrated photovoltaics (BIPV) have attracted considerable interests because of its aesthetically attractive appearance and overall low cost. In BIPV, system integration on a glass substrate like windows is essential to cover a large area of a building with low cost. However, the conventional high voltage devices in inverters have to be built on the specially selected single crystal substrates, limiting its application for large area electronic systems, such as the BIPV. We demonstrate a Magnesium Zinc Oxide (MZO) based high voltage thin film transistor (HVTFT) built on a transparent glass substrate...
October 10, 2016: Scientific Reports
Zhijun Shi, Xing Gao, Muhammad Wajid Ullah, Sixiang Li, Qun Wang, Guang Yang
Hydrogels prepared from natural polymers have received immense considerations over the past decade due to their safe nature, biocompatibility, hydrophilic properties, and biodegradable nature. More recently, when treated with electroactive materials, these hydrogels were endowed with high electrical conductivity, electrochemical redox properties, and electromechanical properties; consequently, forming a smart hydrogel. The biological properties of these smart hydrogels, classified as electroconductive hydrogels, can be combined with electronics...
September 30, 2016: Biomaterials
G Jeanne, D Purper-Ouakil, H Rigole, N Franc
AIM: There have been significant changes in adolescent consumption habits over the past fifteen years. New molecules have been synthesized, new devices created and a number of products have increased in popularity; and as a result clinicians sometimes lack information. We chose to focus on this population because of its vulnerability, as adolescents show low sensitivity to long-term outcomes of their actions and may be easily influenced by peers as regards experimentation of new drugs...
October 6, 2016: L'Encéphale
Sebastian Haefner, Philipp Frank, Martin Elstner, Johannes Nowak, Stefan Odenbach, Andreas Richter
Smart hydrogels are useful elements in microfluidic systems because they respond to environmental stimuli and are capable of storing reagents. We present here a concept of using hydrogels (poly(N-isopropylacrylamide)) as an interface between continuous and discontinuous microfluidics. Their swelling and shrinking capabilities allow them to act as storage elements for reagents absorbed in the swelling process. When the swollen hydrogel collapses in an oil-filled channel, the incorporated water and molecules are expelled from the hydrogel and form a water reservoir...
October 5, 2016: Lab on a Chip
Ulrike Kulka, Michael Abend, Elizabeth Ainsbury, Christophe Badie, Joan Francesc Barquinero, Lleonard Barrios, Christina Beinke, Emanuela Bortolin, Alexandra Cucu, Andrea De Amicis, Inmaculada Domínguez, Paola Fattibene, Anne Marie Frøvig, Eric Gregoire, Kamile Guogyte, Valeria Hadjidekova, Alicja Jaworska, Ralf Kriehuber, Carita Lindholm, David Lloyd, Katalin Lumniczky, Fiona Lyng, Roberta Meschini, Simone Mörtl, Sara Della Monaca, Octávia Monteiro Gil, Alegria Montoro, Jayne Moquet, Mercedes Moreno, Ursula Oestreicher, Fabrizio Palitti, Gabriel Pantelias, Clarice Patrono, Laure Piqueret-Stephan, Matthias Port, María Jesus Prieto, Roel Quintens, Michelle Ricoul, Horst Romm, Laurence Roy, Géza Sáfrány, Laure Sabatier, Natividad Sebastià, Sylwester Sommer, Georgia Terzoudi, Antonella Testa, Hubert Thierens, Istvan Turai, François Trompier, Marco Valente, Pedro Vaz, Philippe Voisin, Anne Vral, Clemens Woda, Demetre Zafiropoulos, Andrzej Wojcik
PURPOSE: A European network was initiated in 2012 by 23 partners from 16 European countries with the aim to significantly increase individualized dose reconstruction in case of large-scale radiological emergency scenarios. RESULTS: The network was built on three complementary pillars: (1) an operational basis with seven biological and physical dosimetric assays in ready-to-use mode, (2) a basis for education, training and quality assurance, and (3) a basis for further network development regarding new techniques and members...
October 6, 2016: International Journal of Radiation Biology
Shangwen Chen, Xianyong Fang, Jianbing Shen, Linbo Wang, Ling Shao
Existing distance measurement methods either require multiple images and special photographing poses or only measure the height with a special view configuration. We propose a novel image-based method that can measure various types of distance from single image captured by a smart mobile device. The embedded accelerometer is used to determine the view orientation of the device. Consequently, pixels can be back-projected to the ground, thanks to the efficient calibration method using two known distances. Then the distance in pixel is transformed to a real distance in centimeter with a linear model parameterized by the magnification ratio...
September 29, 2016: IEEE Transactions on Cybernetics
Qingqing Sun, Yanchao Lü, Lingling Liu, Kaiqiang Liu, Rong Miao, Yu Fang
Supramolecular approach plays pivotal role in the construction of smart and functional materials due to the reversible nature of noncovalent interactions. In the present work, two compounds, cholesterol-functionalized calix[4]pyrrole (CCP) and perylene bisimide diacid (PDA), were synthesized. Little fluorescence is observed in the ethanol solution of the mixture of CCP and PDA, while the solution turns fluorescent upon introduction of ammonia, which is attributed to the formation of a supramolecular ensemble, PDA/(CCP)2/NH3...
October 5, 2016: ACS Applied Materials & Interfaces
Zhisheng Chai, Nannan Zhang, Peng Sun, Yi Huang, Chuanxi Zhao, Hong Jin Fan, Xing Fan, Wenjie Mai
The pursuit of harmonic combination of technology and fashion intrinsically points to the development of smart garments. Herein, we present an all-solid tailorable energy textile possessing integrated function of simultaneous solar energy harvesting and storage, and we call it tailorable textile device. Our technique makes it possible to tailor the multifunctional textile into any designed shape without impairing its performance and produce stylish smart energy garments for wearable self-powering system with enhanced user experience and more room for fashion design...
October 5, 2016: ACS Nano
Mark Orme, Amie Weedon, Dale Esliger, Paula Saukko, Mike Morgan, Michael Steiner, John Downey, Sally Singh, Lauren Sherar
INTRODUCTION: An acute exacerbation of chronic obstructive pulmonary disease (COPD) marks a critical life event, which can lower patient quality of life and ability to perform daily activities. Patients with COPD tend to lead inactive and highly sedentary lifestyles, which may contribute to reductions in functional capacity. Targeting sedentary behaviour (SB) may be more attainable than exercise (at a moderate-to-vigorous intensity) for behaviour change in patients following an exacerbation...
October 3, 2016: BMJ Open
Borim Ryu, Seok Kim, Kee-Hyuck Lee, Hee Hwang, Sooyoung Yoo
OBJECTIVE: Bedside stations, also known as bedside terminals, are in place to enhance the quality and experience of a hospital's healthcare service delivery. The purpose of this study was to identify information needs and overall satisfaction with the personalized patient bedside system, called Smart Bedside Station (SBS) system, embedded in a tertiary general university hospital. METHODS: End-user responses on the satisfaction survey and system usage logs of the SBS system were collected and analyzed...
November 2016: International Journal of Medical Informatics
Koki Wakunami, Po-Yuan Hsieh, Ryutaro Oi, Takanori Senoh, Hisayuki Sasaki, Yasuyuki Ichihashi, Makoto Okui, Yi-Pai Huang, Kenji Yamamoto
Owing to the limited spatio-temporal resolution of display devices, dynamic holographic three-dimensional displays suffer from a critical trade-off between the display size and the visual angle. Here we show a projection-type holographic three-dimensional display, in which a digitally designed holographic optical element and a digital holographic projection technique are combined to increase both factors at the same time. In the experiment, the enlarged holographic image, which is twice as large as the original display device, projected on the screen of the digitally designed holographic optical element was concentrated at the target observation area so as to increase the visual angle, which is six times as large as that for a general holographic display...
October 3, 2016: Nature Communications
Sarah P Loughran, Md Shahriar Al Hossain, Alan Bentvelzen, Mark Elwood, John Finnie, Joseph Horvat, Steve Iskra, Elena P Ivanova, Jim Manavis, Chathuranga Keerawella Mudiyanselage, Alireza Lajevardipour, Boris Martinac, Robert McIntosh, Raymond McKenzie, Mislav Mustapic, Yoshitaka Nakayama, Elena Pirogova, M Harunur Rashid, Nigel A Taylor, Nevena Todorova, Peter M Wiedemann, Robert Vink, Andrew Wood, Irene Yarovsky, Rodney J Croft
Mobile phone subscriptions continue to increase across the world, with the electromagnetic fields (EMF) emitted by these devices, as well as by related technologies such as Wi-Fi and smart meters, now ubiquitous. This increase in use and consequent exposure to mobile communication (MC)-related EMF has led to concern about possible health effects that could arise from this exposure. Although much research has been conducted since the introduction of these technologies, uncertainty about the impact on health remains...
2016: International Journal of Environmental Research and Public Health
Thomas Beltrame, Robert Amelard, Rodrigo Villar, Mohammad Javad Shafiee, Alexander Wong, Richard L Hughson
The study of oxygen uptake (VO2) dynamics during walking exercise transitions adds valuable information regarding fitness level and energy expenditure. However, direct VO2 measurements are not applicable for measurements in the general population under realistic settings. Devices to measure VO2 are associated with elevated cost, uncomfortable use of a mask, need of trained technicians and impossibility of long-term data collection. The objective of this study was to predict the VO2 dynamics from heart rate and inputs from the treadmill ergometer by a novel artificial neural network approach...
September 29, 2016: Journal of Applied Physiology
Artem Golev, Diego R Schmeda-Lopez, Simon K Smart, Glen D Corder, Eric W McFarland
For almost two decades waste electrical and electronic equipment, WEEE or e-waste, has been considered a growing problem that has global consequences. The value of recovered materials, primarily in precious and base metals, has prompted some parts of the world to informally and inappropriately process e-waste causing serious environmental and human health issues. Efforts in tackling this issue have been limited and in many ways unsuccessful. The global rates for formal e-waste treatment are estimated to be below the 20% mark, with the majority of end-of-life (EoL) electronic devices still ending up in the landfills or processed through rudimentary means...
September 26, 2016: Waste Management
Francesco Aggogeri, Alberto Borboni, Angelo Merlo, Nicola Pellegrini, Raffaele Ricatto
This paper proposes an innovative mechatronic piezo-actuated module to control vibrations in modern machine tools. Vibrations represent one of the main issues that seriously compromise the quality of the workpiece. The active vibration control (AVC) device is composed of a host part integrated with sensors and actuators synchronized by a regulator; it is able to make a self-assessment and adjust to alterations in the environment. In particular, an innovative smart actuator has been designed and developed to satisfy machining requirements during active vibration control...
2016: Sensors
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