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https://www.readbyqxmd.com/read/29474502/validation-of-the-portable-air-smart-spirometer
#1
Cristina Ramos Hernández, Marta Núñez Fernández, Abel Pallares Sanmartín, Cecilia Mouronte Roibas, Luz Cerdeira Domínguez, Maria Isabel Botana Rial, Nagore Blanco Cid, Alberto Fernández Villar
BACKGROUND: The Air-Smart Spirometer is the first portable device accepted by the European Community (EC) that performs spirometric measurements by a turbine mechanism and displays the results on a smartphone or a tablet. METHODS: In this multicenter, descriptive and cross-sectional prospective study carried out in 2 hospital centers, we compare FEV1, FVC, FEV1/FVC ratio measured with the Air Smart-Spirometer device and a conventional spirometer, and analyze the ability of this new portable device to detect obstructions...
2018: PloS One
https://www.readbyqxmd.com/read/29465050/antibacterial-effect-of-surface-pretreatment-techniques-against-streptococcus-mutans
#2
H S Sancakli, S H Siso, S O Yildiz, Y B Gökçe
Objective: The aim of this study was to evaluate the antibacterial surface pretreatment methods against Streptococcus mutans within the infected dentin surface using a tooth cavity model. Material and Methods: Seventy-two cavities were prepared on caries-free third molars (n = 8). After sterilization, teeth were inoculated with S. mutans for 48 h. One cavity of each tooth was used to evaluate the infection. Following inoculation, infected cavity surfaces were treated either with (1) Er:YAG Laser (1W; 5x5s, Smart 2940D Plus, Deka Laser), (2) Ozone (80s; HealOzone, Kavo), (3) ErYAG-Ozone combination, (4) Er:YAG-Ozone-CHX combination, (5) Chlorhexidine (CHX), (6) Clearfil Protect Bond (PB), (7) potassium-titanyl-phosphate (KTP) Laser (1W; 60 s, SMARTLITE D, Deka Laser), (8) KTP-Ozone combination, and (9) KTP-Ozone-CHX...
February 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29464250/ce-doped-bundled-ultrafine-diameter-tungsten-oxide-nanowires-with-enhanced-electrochromic-performance
#3
Thummavichai Kunyapat, Fang Xu, Nigle Neate, Nannan Wang, Adolfo De Sanctis, Saverio Russo, Shaowei Zhang, Yongda Xia, Yanqiu Zhu
Cerium (Ce)-doped tungsten oxide nanostructures were synthesised using a simple solvothermal method from cerium chloride salt (CeCl3 ·7H2 O) and tungsten hexachloride (WCl6 ) precursors. The as-prepared samples were thoroughly characterised using electron microscopies, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The electrochromic performance of different samples was evaluated using a custom-built UV-VIS spectrometer and an electrochemistry technique. The results showed that the as-prepared samples underwent morphological evolution with the increase in the Ce/W molar ratio, from long, thin and bundled nanowires, through shorter and thicker nanowires to mixed nanowire bundles and nanoparticle agglomerates...
February 21, 2018: Nanoscale
https://www.readbyqxmd.com/read/29463870/a-novel-p300-bci-speller-based-on-the-triple-rsvp-paradigm
#4
Zhimin Lin, Chi Zhang, Ying Zeng, Li Tong, Bin Yan
A brain-computer interface (BCI) is an advanced human-machine interaction technology. The BCI speller is a typical application that detects the stimulated source-induced EEG signal to identify the expected characters of the subjects. The current mainstream matrix-based BCI speller involves two problems that remain unsolved, namely, gaze-dependent and space-dependent problems. Some scholars have designed gaze-independent and space-independent spelling systems. However, this system still cannot achieve a satisfactory information transfer rate (ITR)...
February 20, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29462948/microfluidic-devices-for-drug-delivery-systems-and-drug-screening
#5
REVIEW
Samar Damiati, Uday B Kompella, Safa A Damiati, Rimantas Kodzius
Microfluidic devices present unique advantages for the development of efficient drug carrier particles, cell-free protein synthesis systems, and rapid techniques for direct drug screening. Compared to bulk methods, by efficiently controlling the geometries of the fabricated chip and the flow rates of multiphase fluids, microfluidic technology enables the generation of highly stable, uniform, monodispersed particles with higher encapsulation efficiency. Since the existing preclinical models are inefficient drug screens for predicting clinical outcomes, microfluidic platforms might offer a more rapid and cost-effective alternative...
February 16, 2018: Genes
https://www.readbyqxmd.com/read/29461253/multifunctional-devices-based-on-sno2-rgo-coated-fibres-for-human-motion-monitoring-ethanol-detection-and-photo-response
#6
Qing Mi, Qi Wang, Siyao Zang, Zhaoer Chai, Jinnan Zhang, Xiaomin Ren
In this study, we have developed a multifunctional device based on SnO2@rGO-coated fibres utilizing plasma treatment, dip coating and microwave irradiation in sequence, and finally realized highly sensitive human motion monitoring, relatively good ethanol detection and obvious photo response. Moreover, a high level of comfort and compactness were achieved by choosing highly elastic and comfortable fabrics as the functional carrier, which contributed to the long-time availability and the test accuracy. As an attempt for multifunctional integration of smart clothing, this work provides an attractive and relatively practical research direction...
February 20, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29461038/a-portable-photoelectrochemical-device-integrated-with-self-powered-electrochromic-tablet-for-visual-analysis
#7
Qianhui Yang, Qing Hao, Jianping Lei, Huangxian Ju
A portable photoelectrochemical (PEC) device is developed by intergating a self-powered electrochromic tablet for visual analysis. The tablet consists of an electron-injector (EI) part for photo-to-electric conversion and an electrochromic (EC) part for visualized readout, which are coated with dye-sensitized titanium dioxide film and Ni-doped tungsten trioxide (WO3) film, respectively. Under the illumination of a white LED light, the photoexcited electrons generated from EI part convey to EC part through the conductive inner side of indium tin oxide slide and would cause color change of the Ni-doped WO3 film in the presence of protons...
February 20, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29460421/tattoo-paper-transfer-as-a-versatile-platform-for-all-printed-organic-edible-electronics
#8
Giorgio E Bonacchini, Caterina Bossio, Francesco Greco, Virgilio Mattoli, Yun-Hi Kim, Guglielmo Lanzani, Mario Caironi
The use of natural or bioinspired materials to develop edible electronic devices is a potentially disruptive technology that can boost point-of-care testing. The technology exploits devices that can be safely ingested, along with pills or even food, and operated from within the gastrointestinal tract. Ingestible electronics can potentially target a significant number of biomedical applications, both as therapeutic and diagnostic tool, and this technology may also impact the food industry, by providing ingestible or food-compatible electronic tags that can "smart" track goods and monitor their quality along the distribution chain...
February 20, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29456436/learning-activity-predictors-from-sensor-data-algorithms-evaluation-and-applications
#9
Bryan Minor, Janardhan Rao Doppa, Diane J Cook
Recent progress in Internet of Things (IoT) platforms has allowed us to collect large amounts of sensing data. However, there are significant challenges in converting this large-scale sensing data into decisions for real-world applications. Motivated by applications like health monitoring and intervention and home automation we consider a novel problem called Activity Prediction , where the goal is to predict future activity occurrence times from sensor data. In this paper, we make three main contributions...
December 1, 2017: IEEE Transactions on Knowledge and Data Engineering
https://www.readbyqxmd.com/read/29455516/core-shell-microneedle-gel-for-self-regulated-insulin-delivery
#10
Jinqiang Wang, Yanqi Ye, Jicheng Yu, Anna R Kahkoska, Xudong Zhang, Chao Wang, Wujin Sun, Ria D Corder, Zhaowei Chen, Saad A Khan, John B Buse, Zhen Gu
A bioinspired glucose-responsive insulin delivery system for self-regulation of blood glucose levels is desirable for improving health and quality of life outcomes for patients with type 1 and advanced type 2 diabetes. Here we describe a painless core-shell microneedle array patch consisting of degradable cross-linked gel for smart insulin delivery with rapid responsiveness and excellent biocompatibility. This gel-based device can partially dissociate and subsequently release insulin when triggered by hydrogen peroxide (H2 O2 ) generated during the oxidation of glucose by a glucose-specific enzyme covalently attached inside the gel...
February 19, 2018: ACS Nano
https://www.readbyqxmd.com/read/29451714/development-of-regenerative-and-flexible-fibroin-based-wound-dressings
#11
Angelica Panico, Federica Paladini, Mauro Pollini
Skin injuries represent a health problem with consequences in terms of morbidity, disability and life quality. Numerous strategies have been developed for the treatment of wounds, including skin substitutes, biomembranes, scaffolds, and smart dressings. The excellent properties of fibroin can be exploited for the development of advanced wound dressing biomaterials, aiming at promoting the wound healing process. In this work, silk fibroin films modified through the addition of glucose were developed to enhance flexibility of medical device without affecting the biocompatibility, to promote wound healing and to improve the patient well-being...
February 16, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29451416/refinement-of-in-vivo-optical-imaging-development-of-a-real-time-respiration-monitoring-system
#12
Ana L Gomes, Stuart Gilchrist, Veerle Kersemans, Marcus Westcott, Sean Smart
In vivo optical imaging enables detection and quantification of light-emitting compounds from the whole body in small animals such as the mouse, but it typically requires the use of anaesthetics for subject immobilisation due to long exposure times. Excessively deep anaesthesia can result in unacceptably compromised physiology, whilst excessively light anaesthesia can result in animals waking up. Here we report a respiratory monitoring setup for an in vivo bioluminescence and fluorescence imaging device which simultaneously allows real-time adaptive control of anaesthesia depth in multiple animals to (i) potentially increase the consistency between animals, (ii) ensure animals are maintained within minimally intrusive, adequate anaesthetic plane and (iii) provide a valuable refinement strategy for a common challenge within animal-based research...
January 1, 2018: Laboratory Animals
https://www.readbyqxmd.com/read/29442518/large-area-high-performance-flexible-pressure-sensor-with-carbon-nanotube-active-matrix-for-electronic-skin
#13
Luca Nela, Jianshi Tang, Qing Cao, George S Tulevski, Shu-Jen Han
Artificial "electronic skin" is of great interest for mimicking the functionality of human skin, such as tactile pressure sensing. Several important performance metrics include mechanical flexibility, operation voltage, sensitivity and accuracy, as well as response speed. In this paper, we demonstrate a large-area high-performance flexible pressure sensor built on an active matrix of 16×16 carbon nanotube thin-film transistors (CNT TFTs). Made from highly-purified solution tubes, the active matrix exhibits superior flexible TFT performance with high mobility and large current density, along with a high device yield of nearly 99% over 4-inch sample area...
February 14, 2018: Nano Letters
https://www.readbyqxmd.com/read/29439540/an-architecture-framework-for-orchestrating-context-aware-it-ecosystems-a-case-study-for-quantitative-evaluation-%C3%A2
#14
Soojin Park, Sungyong Park, Young B Park
With the emergence of various forms of smart devices and new paradigms such as the Internet of Things (IoT) concept, the IT (Information Technology) service areas are expanding explosively compared to the provision of services by single systems. A new system operation concept that has emerged in accordance with such technical trends is the IT ecosystem. The IT ecosystem can be considered a special type of system of systems in which multiple systems with various degrees of autonomy achieve common goals while adapting to the given environment...
February 12, 2018: Sensors
https://www.readbyqxmd.com/read/29438338/feasibility-assessment-of-a-fine-grained-access-control-model-on-resource-constrained-sensors
#15
Mikel Uriarte Itzazelaia, Jasone Astorga, Eduardo Jacob, Maider Huarte, Pedro Romaña
Upcoming smart scenarios enabled by the Internet of Things (IoT) envision smart objects that provide services that can adapt to user behavior or be managed to achieve greater productivity. In such environments, smart things are inexpensive and, therefore, constrained devices. However, they are also critical components because of the importance of the information that they provide. Given this, strong security is a requirement, but not all security mechanisms in general and access control models in particular are feasible...
February 13, 2018: Sensors
https://www.readbyqxmd.com/read/29438327/carbon-based-nanomaterials-allotropes-a-glimpse-of-their-synthesis-properties-and-some-applications
#16
REVIEW
Salisu Nasir, Mohd Zobir Hussein, Zulkarnain Zainal, Nor Azah Yusof
Carbon in its single entity and various forms has been used in technology and human life for many centuries. Since prehistoric times, carbon-based materials such as graphite, charcoal and carbon black have been used as writing and drawing materials. In the past two and a half decades or so, conjugated carbon nanomaterials, especially carbon nanotubes, fullerenes, activated carbon and graphite have been used as energy materials due to their exclusive properties. Due to their outstanding chemical, mechanical, electrical and thermal properties, carbon nanostructures have recently found application in many diverse areas; including drug delivery, electronics, composite materials, sensors, field emission devices, energy storage and conversion, etc...
February 13, 2018: Materials
https://www.readbyqxmd.com/read/29438276/printing-smart-designs-of-light-emitting-devices-with-maintained-textile-properties
#17
Inge Verboven, Jeroen Stryckers, Viktorija Mecnika, Glen Vandevenne, Manoj Jose, Wim Deferme
To maintain typical textile properties, smart designs of light emitting devices are printed directly onto textile substrates. A first approach shows improved designs for alternating current powder electroluminescence (ACPEL) devices. A configuration with the following build-up, starting from the textile substrate, was applied using the screen printing technique: silver (10 µm)/barium titanate (10 µm)/zinc-oxide (10 µm) and poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (10 µm). Textile properties such as flexibility, drapability and air permeability are preserved by implementing a pixel-like design of the printed layers...
February 13, 2018: Materials
https://www.readbyqxmd.com/read/29432526/a-smartphone-driven-thermometer-application-for-real-time-population-and-individual-level-influenza-surveillance
#18
Aaron C Miller, Inder Singh, Erin Koehler, Philip M Polgreen
Background: Smartphone-based sensors may enable real-time surveillance of infectious diseases at population and household levels. This study evaluates the use of data from commercially available 'smart thermometers,' connected to a mobile phone application, for the surveillance of influenza-like illness (ILI). Methods: At a population level, we analyze the correlation between thermometer recordings (total readings and fevers) and CDC-reported ILI activity nationally and by age group and region...
February 8, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29432461/a-smart-all-in-one-device-to-measure-vital-signs-in-admitted-patients
#19
Mariska Weenk, Harry van Goor, Maartje van Acht, Lucien Jlpg Engelen, Tom H van de Belt, Sebastian J H Bredie
BACKGROUND: Vital sign measurements in hospitalized patients by nurses are time consuming and prone to operational errors. The Checkme, a smart all-in-one device capable of measuring vital signs, could improve daily patient monitoring by reducing measurement time, inter-observer variability, and incorrect inputs in the Electronic Health Record (EHR). We evaluated the accuracy of self measurements by patient using the Checkme in comparison with gold standard and nurse measurements. METHODS AND FINDINGS: This prospective comparative study was conducted at the Internal Medicine ward of an academic hospital in the Netherlands...
2018: PloS One
https://www.readbyqxmd.com/read/29431840/hierarchical-carbon-nanotube-composite-yarn-muscles
#20
Yanhui Song, Susheng Zhou, Kaiyun Jin, Jian Qiao, Da Li, Chao Xu, Dongmei Hu, Jiangtao Di, Min Li, Zuoguang Zhang, Qingwen Li
Hybrid smart actuators fabricated using composites of carbon fibers and shape memory polymers have been extensively studied in recent years. However, relatively slow shape recovery has combined with the reset of shape deformation during cycles to restrict their practical use. An electrothermally reversible actuator based on carbon nanotube (CNT) composite yarn containing CNT fiber and thermoplastic polyurethane (TPU) resin with excellent shape memory was investigated in this paper. The combination of CNT yarn and TPU resin considerably amplified the contraction and stability...
February 12, 2018: Nanoscale
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