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https://www.readbyqxmd.com/read/28550750/mobile-phone-conversations-listening-to-music-and-quiet-electric-cars-are-traffic-sounds-important-for-safe-cycling
#1
A Stelling-Konczak, G P van Wee, J J F Commandeur, M Hagenzieker
Listening to music or talking on the phone while cycling as well as the growing number of quiet (electric) cars on the road can make the use of auditory cues challenging for cyclists. The present study examined to what extent and in which traffic situations traffic sounds are important for safe cycling. Furthermore, the study investigated the potential safety implications of limited auditory information caused by quiet (electric) cars and by cyclists listening to music or talking on the phone. An Internet survey among 2249 cyclists in three age groups (16-18, 30-40 and 65-70year old) was carried out to collect information on the following aspects: 1) the auditory perception of traffic sounds, including the sounds of quiet (electric) cars; 2) the possible compensatory behaviours of cyclists who listen to music or talk on their mobile phones; 3) the possible contribution of listening to music and talking on the phone to cycling crashes and incidents...
May 24, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28550004/an-mhealth-app-for-supporting-quitters-to-manage-cigarette-cravings-with-short-bouts-of-physical-activity-a-randomized-pilot-feasibility-and-acceptability-study
#2
Mary Hassandra, Taru Lintunen, Martin S Hagger, Risto Heikkinen, Mauno Vanhala, Tarja Kettunen
BACKGROUND: While gains in reducing smoking rates in Finland have been made, prevalence rates are still substantial. Relapse rates among smokers engaged in quit-smoking programs are high. Physical activity has been proposed as one means to help smokers manage cravings. Software and apps on mobile phone and handheld devices offer an opportunity to communicate messages on how to use physical activity to manage cravings as part of quit-smoking programs. OBJECTIVE: We aimed to test the feasibility, acceptability, usability, and preliminary efficacy of an mHealth mobile phone app, Physical activity over Smoking (PhoS), to assist smokers in quitting smoking in a randomized controlled trial...
May 26, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28548168/tuning-the-seebeck-effect-in-c60-based-hybrid-thermoelectric-devices-through-temperature-dependent-surface-polarization-and-thermally-modulated-interface-dipoles
#3
Yuchun Liu, Ling Xu, Chen Zhao, Ming Shao, Bin Hu
Fullerene (C60) is an important n-type organic semiconductor with high electron mobility and low thermal conductivity. In this work, we report the experimental results on the tunable Seebeck effect of C60 hybrid thin-film devices by adopting different oxide layers. After inserting n-type high-dielectric constant titanium oxide (TiOx) and zinc oxide (ZnO) layers, we observed a significantly enhanced n-type Seebeck effect in oxide/C60 hybrid devices with Seebeck coefficients of -5.8 mV K(-1) for TiOx/C60 and -2...
May 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28547994/self-assembled-molecular-nanowires-for-high-performance-organic-transistors
#4
Luke R Fleet, James E Stott, Byron Villis, Salahud Din, Michele Serri, Gabriel Aeppli, Sandrine Heutz, Arokia Nathan
While organic semiconductors provide tantalising possibilities for low-cost, light-weight, flexible electronic devices, their current use in transistors - the fundamental building block - is rather limited as their speed and reliability is not competitive with their inorganic counterparts, and is simply too poor for many practical applications. Through self-assembly, highly ordered nanostructures can be prepared that have more competitive transport characteristics, but no simple, scalable method has been discovered that can produce devices based on such nanostructures...
May 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28547933/hybrid-approach-using-laparoscopy-and-transanal-minimally-invasive-surgery-to-treat-rectal-cancer-with-invasion-to-the-seminal-vesicles
#5
Takuya Yamaguchi, Minoru Imai, Dai Uematsu
We treated a 64-year-old man for rectal cancer with direct invasion to the seminal vesicles and no distant metastases by complete resection with laparoscopy and transanal minimally invasive surgery (TAMIS). We inserted the TAMIS device into the anal canal to above the anorectal ring and dissected to prostate level. High ligation of the inferior mesenteric artery and vein was performed by standard medial laparoscopy. The sigmoid and descending colon were mobilized, and in the postrectal space, we dissected to the space made by TAMIS...
May 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28546844/molecular-level-architectural-design-using-benzothiadiazole-based-polymers-for-photovoltaic-applications
#6
Vinila N Viswanathan, Arun D Rao, Upendra K Pandey, Arul Varman Kesavan, Praveen C Ramamurthy
A series of low band gap, planar conjugated polymers, P1 (PFDTBT), P2 (PFDTDFBT) and P3 (PFDTTBT), based on fluorene and benzothiadiazole, was synthesized. The effect of fluorine substitution and fused aromatic spacers on the optoelectronic and photovoltaic performance was studied. The polymer, derived from dithienylated benzothiodiazole and fluorene, P1, exhibited a highest occupied molecular orbital (HOMO) energy level at -5.48 eV. Density functional theory (DFT) studies as well as experimental measurements suggested that upon substitution of the acceptor with fluorine, both the HOMO and lowest unoccupied molecular orbital (LUMO) energy levels of the resulting polymer, P2, were lowered, leading to a higher open circuit voltage and short circuit current with an overall improvement of more than 110% for the photovoltaic devices...
2017: Beilstein Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28546138/mental-health-mobile-apps-for-preadolescents-and-adolescents-a-systematic-review
#7
REVIEW
Rebecca Grist, Joanna Porter, Paul Stallard
BACKGROUND: There are an increasing number of mobile apps available for adolescents with mental health problems and an increasing interest in assimilating mobile health (mHealth) into mental health services. Despite the growing number of apps available, the evidence base for their efficacy is unclear. OBJECTIVE: This review aimed to systematically appraise the available research evidence on the efficacy and acceptability of mobile apps for mental health in children and adolescents younger than 18 years...
May 25, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28544765/fast-batch-production-of-high-quality-graphene-films-in-a-sealed-thermal-molecular-movement-system
#8
Jianbao Xu, Junxiong Hu, Qi Li, Rubing Wang, Weiwei Li, Yufen Guo, Yongbo Zhu, Fengkui Liu, Zaka Ullah, Guocai Dong, Zhongming Zeng, Liwei Liu
Chemical vapor deposition (CVD) growth of high-quality graphene has emerged as the most promising technique in terms of its integrated manufacturing. However, there lacks a controllable growth method for producing high-quality and a large-quantity graphene films, simultaneously, at a fast growth rate, regardless of roll-to-roll (R2R) or batch-to-batch (B2B) methods. Here, a stationary-atmospheric-pressure CVD (SAPCVD) system based on thermal molecular movement, which enables fast B2B growth of continuous and uniform graphene films on tens of stacked Cu(111) foils, with a growth rate of 1...
May 24, 2017: Small
https://www.readbyqxmd.com/read/28544632/understanding-the-limiting-factors-of-solvent-annealed-small-molecule-bulk-heterojunction-organic-solar-cells-from-a-chemical-perspective
#9
Aurelien Viterisi, Daniel Fernandez, Vijay Kumar Challuri, James William Ryan, Eugenia Martinez-Ferrero, Francesc Guispert-Guirado, Marta Martinez, Eduardo Escudero, Caterina Stenta, Lluis Francisco Marsal, Emilio Palomares
A detailed account on the limiting factors of solvent annealed bulk-heterojunction small molecule organic solars cell is given. This account is based on the extensive characterization of solar cell devices made from a library of five diketopyrolopyrole (DPP) donor dyes. Their chemical structure is designed in such a way as to provide insights on the energetics of solar cell active layer microstructure formation. Numerous chemical and physical properties of the active layers are assessed and interrelated such as light absorption, molecular packing in the solid state, crystal-forming properties in thin films, charge carrier mobility and charge carrier recombination kinetics...
May 24, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28541832/design-and-development-of-the-first-exoskeletal-garment-to-enhance-arm-mobility-for-children-with-movement-impairments
#10
Martha L Hall, Michele A Lobo
Children with a variety of diagnoses have impairments that limit their arm function. Despite the fact that arm function is important for early learning and activities of daily living, there are few tools to assist movement for these children, and existing devices have challenges related to cost, accessibility, comfort, and aesthetics. In this article, we describe the design process and development of the first garment-based exoskeleton to assist arm movement in young children with movement impairments: the Playskin Lift(TM)...
May 25, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28541427/percutaneous-cannulation-for-cardiopulmonary-bypass-in-minimally-invasive-surgery-is-associated-with-reduced-groin-complications
#11
Alexandros Moschovas, Paulo A Amorim, Mariana Nold, Gloria Faerber, Mahmoud Diab, Tobias Buenger, Torsten Doenst
OBJECTIVES: Femoral cutdown is standard in most centres if groin cannulation is used for cardiopulmonary bypass in minimally invasive cardiac surgery (MICS). Arterial closure devices (ACDs) allow placement of larger cannulas percutaneously, but its benefit in MICS is unclear. We assessed our results with percutaneous groin cannulation using ACDs in comparison with conventional surgical access in patients undergoing MICS. METHODS: We reviewed 445 consecutive patients having undergone MICS between October 2010 and March 2015...
May 25, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28540366/recombination-in-perovskite-solar-cells-significance-of-grain-boundaries-interface-traps-and-defect-ions
#12
Tejas S Sherkar, Cristina Momblona, Lidón Gil-Escrig, Jorge Ávila, Michele Sessolo, Henk J Bolink, L Jan Anton Koster
Trap-assisted recombination, despite being lower as compared with traditional inorganic solar cells, is still the dominant recombination mechanism in perovskite solar cells (PSCs) and limits their efficiency. We investigate the attributes of the primary trap-assisted recombination channels (grain boundaries and interfaces) and their correlation to defect ions in PSCs. We achieve this by using a validated device model to fit the simulations to the experimental data of efficient vacuum-deposited p-i-n and n-i-p CH3NH3PbI3 solar cells, including the light intensity dependence of the open-circuit voltage and fill factor...
May 12, 2017: ACS Energy Letters
https://www.readbyqxmd.com/read/28538679/a-simple-drain-current-model-for-mos-transistors-with-the-lorentz-force-effect
#13
Hwang-Cherng Chow, Prasenjit Chatterjee, Wu-Shiung Feng
A novel concept of drain current modelling in rectangular normal MOS transistors with the Lorentz force has been proposed for the first time. The single-drain MOS transistor is qualified as a magnetic sensor. To create the Lorentz force, a DC loop current is applied through an on-chip metal loop around the device, and the relation between the applied loop current and the created magnetic field is assumed to be linear in nature. The drain current of the MOS transistor is reduced with the applied Lorentz force from both directions...
May 24, 2017: Sensors
https://www.readbyqxmd.com/read/28537211/a-study-on-students-acceptance-of-mobile-phone-use-to-seek-health-information-in-south-africa
#14
Liezel Cilliers, Kim Lee-Anne Viljoen, Willie Tafadzwa Chinyamurindi
BACKGROUND: In South Africa, inequitable access to healthcare information has made many young people with limited resources more vulnerable to health risks. Mobile phones present a unique opportunity to address this problem due to the high penetration of mobile phones in South Africa and the popularity of these devices among young adults. OBJECTIVE: This research sought to examine the adoption of mobile phones to access health information among students at a traditional university in the Eastern Cape, South Africa...
January 1, 2017: HIM Journal
https://www.readbyqxmd.com/read/28536095/development-of-a-modular-research-platform-to-create-medical-observational-studies-for-mobile-devices
#15
Martin Zens, Birgit Grotejohann, Adrian Tassoni, Fabian Duttenhoefer, Norbert P Südkamp, Philipp Niemeyer
BACKGROUND: Observational studies have proven to be a valuable resource in medical research, especially when performed on a large scale. Recently, mobile device-based observational studies have been discovered by an increasing number of researchers as a promising new source of information. However, the development and deployment of app-based studies is not trivial and requires profound programming skills. OBJECTIVE: The aim of this project was to develop a modular online research platform that allows researchers to create medical studies for mobile devices without extensive programming skills...
May 23, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28536089/smart-devices-for-older-adults-managing-chronic-disease-a-scoping-review
#16
REVIEW
Ben Yb Kim, Joon Lee
BACKGROUND: The emergence of smartphones and tablets featuring vastly advancing functionalities (eg, sensors, computing power, interactivity) has transformed the way mHealth interventions support chronic disease management for older adults. Baby boomers have begun to widely adopt smart devices and have expressed their desire to incorporate technologies into their chronic care. Although smart devices are actively used in research, little is known about the extent, characteristics, and range of smart device-based interventions...
May 23, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28535032/applying-thienyl-side-chains-and-different-%C3%AF-bridge-to-aromatic-side-chain-substituted-indacenodithiophene-based-small-molecule-donors-for-high-performance-organic-solar-cells
#17
Jin-Liang Wang, Kai-Kai Liu, Sha Liu, Feng Liu, Hongbin Wu, Yong Cao, Thomas P Russell
A pair of linear tetrafluorinated small molecular donors, named as ThIDTTh4F and ThIDTSe4F, which are with tetrathienyl-substituted IDT as electron-rich central core, electron-deficient difluorobenzothiadiazole as acceptor units, and donor end-capping groups, but having differences in the π-bridge (thiophene and selenophene), were successfully synthesized and evaluated as donor materials in organic solar cells. Such π-bridge and core units in these small molecules play a decisive role in the formation of the nanoscale separation of the blend films, which were systematically investigated through absorption spectra, grazing incidence X-ray diffraction pattern, transmission electron microscopy images, resonant soft X-ray scattering profiles, and charge mobility measurement...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28534848/development-and-design-of-next-generation-head-mounted-ambulatory-microdose-positron-emission-tomography-am-pet-system
#18
Samantha Melroy, Christopher Bauer, Matthew McHugh, Garret Carden, Alexander Stolin, Stan Majewski, Julie Brefczynski-Lewis, Thorsten Wuest
Several applications exist for a whole brain positron-emission tomography (PET) brain imager designed as a portable unit that can be worn on a patient's head. Enabled by improvements in detector technology, a lightweight, high performance device would allow PET brain imaging in different environments and during behavioral tasks. Such a wearable system that allows the subjects to move their heads and walk-the Ambulatory Microdose PET (AM-PET)-is currently under development. This imager will be helpful for testing subjects performing selected activities such as gestures, virtual reality activities and walking...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28533140/3d-interactive-surgical-visualization-system-using-mobile-spatial-information-acquisition-and-autostereoscopic-display
#19
Zhencheng Fan, Yitong Weng, Guowen Chen, Hongen Liao
Three-dimensional (3D) visualization of preoperative and intraoperative medical information becomes more and more important in minimally invasive surgery. We develop a 3D interactive surgical visualization system using mobile spatial information acquisition and autostereoscopic display for surgeons to observe surgical target intuitively. The spatial information of regions of interest (ROIs) is captured by the mobile device and transferred to a server for further image processing. Triangular patches of intraoperative data with texture are calculated with a dimension-reduced triangulation algorithm and a projection-weighted mapping algorithm...
May 19, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28530388/microfluidic-capillary-electrophoresis-mass-spectrometry-for-analysis-of-monosaccharides-oligosaccharides-and-glycopeptides
#20
Kshitij Khatri, Joshua A Klein, John Haserick, Deborah R Leon, Catherine E Costello, Mark E McComb, Joseph Zaia
Glycomics and glycoproteomics analyses by mass spectrometry require efficient front-end separation methods to enable deep characterization of heterogeneous glycoform populations. Chromatography methods are generally limited in their ability to resolve glycoforms using mobile phases that are compatible with online liquid chromatography-mass spectrometry (LC-MS). The adoption of capillary electrophoresis-mass spectrometry methods (CE-MS) for glycomics and glycoproteomics is limited by the lack of convenient interfaces for coupling the CE devices to mass spectrometers...
May 22, 2017: Analytical Chemistry
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