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https://www.readbyqxmd.com/read/29474753/a-rational-delamination-strategy-towards-defect-free-high-mobility-few-layered-black-phosphorus-flakes
#1
Sheng Yang, Ke Zhang, Antonio Gaetano Ricciardulli, Panpan Zhang, Zhongquan Liao, Martin Lohe, Ehrenfried Zschech, Paul Blom, Wojciech Pisula, Klaus Müllen, Xinliang Feng
The extraordinary electronic and photonic features render black phosphorus (BP) an important material for the development of novel electronics and optoelectronics. Despite the recent progress in the preparation of few-layered BP flakes, scalable synthesis of large-size, pristine BP flakes represents one of the main challenges. Here we demonstrate an electrochemical delamination strategy, based on the intercalation of diverse cations in non-aqueous electrolytes, to peel off bulk BP crystals into few-layer, defect-free flakes...
February 23, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29474073/pt-richcore-sn-richsubsurface-ptskin-nanocubes-as-highly-active-and-stable-electrocatalysts-for-the-ethanol-oxidation-reaction
#2
Rubén Rizo, Rosa Arán-Ais, Elliot Padgett, David Muller, María Jesús Lázaro, Jose Solla-Gullon, Juan M Feliu, Elena Pastor, Héctor D Abruña
Direct ethanol fuel cells (DEFC) are one of the most promising electrochemical energy conversion devices for portable, mobile and stationary power applications. However, more efficient and stable and less expensive electrocatalysts are still required. Interestingly, the electrochemical performance of the electrocatalysts towards the ethanol oxidation reaction (EOR) can be remarkably enhanced by exploiting the benefits of structural and compositional sensitivity and control. Here we describe the synthesis, characterization and electrochemical behavior of cubic Pt-Sn nanoparticles...
February 23, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29473236/oxide-thin-film-electronics-using-all-mxene-electrical-contacts
#3
Zhenwei Wang, Hyunho Kim, Husam N Alshareef
2D MXenes have shown great promise in electrochemical and electromagnetic shielding applications. However, their potential use in electronic devices is significantly less explored. The unique combination of metallic conductivity and hydrophilic surface suggests that MXenes can also be promising in electronics and sensing applications. Here, it is shown that metallic Ti3 C2 MXene with work function of 4.60 eV can make good electrical contact with both zinc oxide (ZnO) and tin monoxide (SnO) semiconductors, with negligible band offsets...
February 23, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29471360/adverse-consequences-of-unmet-needs-for-care-in-high-need-high-cost-older-adults
#4
Scott R Beach, Richard Schulz, Esther M Friedman, Juleen Rodakowski, Grant Martsolf, Alton Everette James
Objectives: We explore adverse consequences of unmet needs for care among high-need/high-cost (HNHC) older adults. Method: Interviews with 4,024 community-dwelling older adults with ADL/IADL/mobility disabilities from the 2011 National Health and Aging Trends Study (NHATS). Reports of socio-demographics, disability compensatory strategies, and adverse consequences of unmet needs in the past month were obtained from older adults with multiple chronic conditions (MCC), probable dementia (DEM), and/or near end-of-life (EOL) and compared older adults not meeting these criteria...
February 17, 2018: Journals of Gerontology. Series B, Psychological Sciences and Social Sciences
https://www.readbyqxmd.com/read/29466819/feasibility-testing-of-a-wearable-behavioral-aid-for-social-learning-in-children-with-autism
#5
Jena Daniels, Nick Haber, Catalin Voss, Jessey Schwartz, Serena Tamura, Azar Fazel, Aaron Kline, Peter Washington, Jennifer Phillips, Terry Winograd, Carl Feinstein, Dennis P Wall
BACKGROUND:  Recent advances in computer vision and wearable technology have created an opportunity to introduce mobile therapy systems for autism spectrum disorders (ASD) that can respond to the increasing demand for therapeutic interventions; however, feasibility questions must be answered first. OBJECTIVE:  We studied the feasibility of a prototype therapeutic tool for children with ASD using Google Glass, examining whether children with ASD would wear such a device, if providing the emotion classification will improve emotion recognition, and how emotion recognition differs between ASD participants and neurotypical controls (NC)...
January 2018: Applied Clinical Informatics
https://www.readbyqxmd.com/read/29466334/skin-electronics-from-scalable-fabrication-of-an-intrinsically-stretchable-transistor-array
#6
Sihong Wang, Jie Xu, Weichen Wang, Ging-Ji Nathan Wang, Reza Rastak, Francisco Molina-Lopez, Jong Won Chung, Simiao Niu, Vivian R Feig, Jeffery Lopez, Ting Lei, Soon-Ki Kwon, Yeongin Kim, Amir M Foudeh, Anatol Ehrlich, Andrea Gasperini, Youngjun Yun, Boris Murmann, Jeffery B-H Tok, Zhenan Bao
Skin-like electronics that can adhere seamlessly to human skin or within the body are highly desirable for applications such as health monitoring, medical treatment, medical implants and biological studies, and for technologies that include human-machine interfaces, soft robotics and augmented reality. Rendering such electronics soft and stretchable-like human skin-would make them more comfortable to wear, and, through increased contact area, would greatly enhance the fidelity of signals acquired from the skin...
February 19, 2018: Nature
https://www.readbyqxmd.com/read/29466316/approach-for-the-development-of-a-framework-for-the-identification-of-activities-of-daily-living-using-sensors-in-mobile-devices
#7
Ivan Miguel Pires, Nuno M Garcia, Nuno Pombo, Francisco Flórez-Revuelta, Susanna Spinsante
Sensors available on mobile devices allow the automatic identification of Activities of Daily Living (ADL). This paper describes an approach for the creation of a framework for the identification of ADL, taking into account several concepts, including data acquisition, data processing, data fusion, and pattern recognition. These concepts can be mapped onto different modules of the framework. The proposed framework should perform the identification of ADL without Internet connection, performing these tasks locally on the mobile device, taking in account the hardware and software limitations of these devices...
February 21, 2018: Sensors
https://www.readbyqxmd.com/read/29465118/electric-field-analyses-on-monolayer-semiconductors-the-example-of-inse
#8
Xue-Peng Wang, Xian-Bin Li, Nian-Ke Chen, Ji-Hong Zhao, Qi-Dai Chen, Hong-Bo Sun
External electric fields can be used to manipulate the electronic properties of two-dimensional (2D) materials. 2D InSe semiconductors possess high electron mobility and wide band gap tunability. Therefore, they have been proposed for use in ultrathin electronic devices. Here, using first-principles calculations, we study the charge polarization, structure, electronic structure, and gas adsorption of an InSe monolayer under vertical electric fields. We find that both the structural evolution and charge polarization rely on the directions of the electric fields...
February 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29464404/assessing-and-enhancing-the-utility-of-low-cost-activity-and-location-sensors-for-exposure-studies
#9
Stamatelopoulou Asimina, D Chapizanis, S Karakitsios, P Kontoroupis, D N Asimakopoulos, T Maggos, D Sarigiannis
Nowadays, the advancement of mobile technology in conjunction with the introduction of the concept of exposome has provided new dynamics to the exposure studies. Since the addressing of health outcomes related to environmental stressors is crucial, the improvement of exposure assessment methodology is of paramount importance. Towards this aim, a pilot study was carried out in the two major cities of Greece (Athens, Thessaloniki), investigating the applicability of commercially available fitness monitors and the Moves App for tracking people's location and activities, as well as for predicting the type of the encountered location, using advanced modeling techniques...
February 20, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29464247/role-of-the-doping-level-in-localized-proton-motions-in-acceptor-doped-barium-zirconate-proton-conductors
#10
Daria Noferini, Michael M Koza, Seikh M H Rahman, Zach Evenson, Gøran J Nilsen, Sten Eriksson, Andrew R Wildes, Maths Karlsson
Acceptor-doped barium zirconates are currently receiving considerable interest because of their high proton conductivity at intermediate temperatures, making them applicable as electrolytes in various electrochemical devices, but the mechanism of proton conduction is unclear. Here, we investigate the role of the acceptor-dopant level in the localized proton motions, i.e. proton transfers between oxygens and O-H reorientations, in hydrated samples of the proton conducting, acceptor-doped, perovskites BaZr1-x Inx O3-x/2 with x = 0...
February 21, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29463870/a-novel-p300-bci-speller-based-on-the-triple-rsvp-paradigm
#11
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/29463832/frequency-of-early-vascular-aging-and-associated-risk-factors-among-an-adult-population-in-latin-america-the-optimo-study
#12
Fernando Botto, Sebastian Obregon, Fernando Rubinstein, Angelo Scuteri, Peter M Nilsson, Carol Kotliar
The main objective was to estimate the frequency of early vascular aging (EVA) in a sample of subjects from Latin America, with emphasis in young adults. We included 1416 subjects from 12 countries in Latin America who provided information about lifestyle, cardiovascular risk factors (CVRF), and anthropometrics. We measured pulse wave velocity (PWV) as a marker of arterial stiffness, and blood pressure (BP) using an oscillometric device (Mobil-O-Graph). To determine the frequency of EVA, we used multiple linear regression to estimate each subject's PWV expected for his/her age and systolic BP, and compared with observed values to obtain standardized residuals (z-scores)...
February 20, 2018: Journal of Human Hypertension
https://www.readbyqxmd.com/read/29463493/effect-of-impulsive-compression-treatment-on-postoperative-complications-after-open-peripheral-vascular-revascularization-in-situ-protocol-for-a-randomized-control-trial
#13
Tenna Klit, Marie Dahl, Kim Christian Houlind, Hans Ravn
BACKGROUND: In patients with critical leg ischemia (CLI), the standard operative choice is an in situ bypass to the lower extremity to improve the patients´ prognosis and quality of life. Postoperative complications after surgery occur in 18 % of the patients, prolonging hospitalization and convalescence. The main operative complication is edema. This can be prevented by early mobilization or stimulation of the natural venous pump in the leg. OBJECTIVE: To investigate whether compression therapy with foot pump reduces postoperative edema, facilitates wound healing of the operation wounds, promotes healing of ischemic ulcers, and shortens hospitalization, increasing and improving the patient's subjective quality of life faster...
February 20, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29463489/mobile-app-delivery-of-the-eortc-qlq-c30-questionnaire-to-assess-health-related-quality-of-life-in-oncological-patients-usability-study
#14
Kerstin A Kessel, Marco Me Vogel, Anna Alles, Sophie Dobiasch, Hanna Fischer, Stephanie E Combs
BACKGROUND: Mobile apps are evolving in the medical field. However, ongoing discussions have questioned whether such apps are really valuable and whether patients will accept their use in day-to-day clinical life. Therefore, we initiated a usability study in our department. OBJECTIVE: We present our results of the first app prototype and patient testing of health-related quality of life (HRQoL) assessment in oncological patients. METHODS: We developed an app prototype for the iOS operating system within eight months in three phases: conception, initial development, and pilot testing...
February 20, 2018: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29463064/devising-mobile-sensing-and-actuation-infrastructure-with-drones
#15
Mungyu Bae, Seungho Yoo, Jongtack Jung, Seongjoon Park, Kangho Kim, Joon Yeop Lee Kim, Hwangnam Kim
Vast applications and services have been enabled as the number of mobile or sensing devices with communication capabilities has grown. However, managing the devices, integrating networks or combining services across different networks has become a new problem since each network is not directly connected via back-end core networks or servers. The issue is and has been discussed especially in wireless sensor and actuator networks (WSAN). In such systems, sensors and actuators are tightly coupled, so when an independent WSAN needs to collaborate with other networks, it is difficult to adequately combine them into an integrated infrastructure...
February 19, 2018: Sensors
https://www.readbyqxmd.com/read/29461493/design-and-implementation-of-e-health-system-based-on-semantic-sensor-network-using-ietf-yang
#16
Wenquan Jin, Do Hyeun Kim
Recently, healthcare services can be delivered effectively to patients anytime and anywhere using e-Health systems. e-Health systems are developed through Information and Communication Technologies (ICT) that involve sensors, mobiles, and web-based applications for the delivery of healthcare services and information. Remote healthcare is an important purpose of the e-Health system. Usually, the eHealth system includes heterogeneous sensors from diverse manufacturers producing data in different formats. Device interoperability and data normalization is a challenging task that needs research attention...
February 20, 2018: Sensors
https://www.readbyqxmd.com/read/29460536/traumatic-and-surgical-scars-successful-treatment-with-a-1-565nm-erbium-glass-nafl-combined-with-ipl
#17
D Quarato, M Pascali, F Carinci
Scars are a very common condition of the general population and can have a profound impact on the psyche of the patient such as low self-esteem and feelings of psychosocial isolation. Various therapeutic approaches have been proposed for improving the clinical appearance of scars. Fractional mode of ablative and non-ablative lasers has become a novel strategy for the treatment of scars. A total of 43 patients (Fitzpatrick skin type II to IV), clinically diagnosed of surgical and post-traumatic scars from January 2015 to December 2016, were treated...
January 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29460155/pelvic-reconstructions-following-peri-acetabular-bone-tumour-resections-using-a-cementless-ice-cream-cone-prosthesis-with-dual-mobility-cup
#18
Samir-Pierre Issa, David Biau, Antoine Babinet, Valérie Dumaine, Malo Le Hanneur, Philippe Anract
PURPOSE: Despite numerous reconstructive techniques and prosthetic devices, pelvic reconstructions following peri-acetabular malignant tumours resections are highly challenging. In the present study, we describe our experience with the Integra® (Lépine, Genay, France) ice-cream cone prosthesis in such indications. The objective was to assess the mid-term outcomes of this device. METHODS: Twenty-four patients' chart with peri-acetabular malignant tumours, who underwent types II or II + III peri-acetabular resections according to Enneking and Dunham with subsequent reconstruction using the Integra® prosthesis between February 2009 and February 2015, were reviewed...
January 27, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29459355/mobile-phone-ownership-is-not-a-serious-barrier-to-participation-in-studies-descriptive-study
#19
Emily J Harvey, Leslie F Rubin, Sabrina L Smiley, Yitong Zhou, Hoda Elmasry, Jennifer L Pearson
BACKGROUND: Rather than providing participants with study-specific data collection devices, their personal mobile phones are increasingly being used as a means for collecting geolocation and ecological momentary assessment (EMA) data in public health research. OBJECTIVE: The purpose of this study was to (1) describe the sociodemographic characteristics of respondents to an online survey screener assessing eligibility to participate in a mixed methods study collecting geolocation and EMA data via the participants' personal mobile phones, and (2) examine how eligibility criteria requiring mobile phone ownership and an unlimited text messaging plan affected participant inclusion...
February 19, 2018: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29459019/real-time-continuous-glucose-monitoring-in-adults-with-type-1-diabetes-and-impaired-hypoglycaemia-awareness-or-severe-hypoglycaemia-treated-with-multiple-daily-insulin-injections-hypode-a-multicentre-randomised-controlled-trial
#20
Lutz Heinemann, Guido Freckmann, Dominic Ehrmann, Gabriele Faber-Heinemann, Stefania Guerra, Delia Waldenmaier, Norbert Hermanns
BACKGROUND: The effectiveness of real-time continuous glucose monitoring (rtCGM) in avoidance of hypoglycaemia among high-risk individuals with type 1 diabetes treated with multiple daily insulin injections (MDI) is unknown. We aimed to ascertain whether the incidence and severity of hypoglycaemia can be reduced through use of rtCGM in these individuals. METHODS: The HypoDE study was a 6-month, multicentre, open-label, parallel, randomised controlled trial done at 12 diabetes practices in Germany...
February 15, 2018: Lancet
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