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https://www.readbyqxmd.com/read/28719842/spatiotemporal-gait-changes-with-use-of-an-arm-swing-cueing-device-in-people-with-parkinson-s-disease
#1
Elizabeth Thompson, Peter Agada, W Geoffrey Wright, Hendrik Reimann, John Jeka
Impaired arm swing is a common motor symptom of Parkinson's disease (PD), and correlates with other gait impairments and increased risk of falls. Studies suggest that arm swing is not merely a passive consequence of trunk rotation during walking, but an active component of gait. Thus, techniques to enhance arm swing may improve gait characteristics. There is currently no portable device to measure arm swing and deliver immediate cues for larger movement. Here we test report pilot testing of such a device, ArmSense (patented), using a crossover repeated-measures design...
July 4, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28719724/synthesis-and-properties-of-new-n-heteroheptacenes-for-solution-based-organic-field-effect-transistors
#2
Fei Zhou, Sheng Liu, Bernard D Santarsiero, Donald J Wink, Damien Boudinet, Antonio Facchetti, Tom G Driver
A series of N-heteroheptacenes was synthesized from ortho-thiophene-substituted aryl azides using a Rh2(II)-catalyzed C-H bond amination reaction to construct the thienoindole moieties. This reaction tolerated the presence of electron-donating or withdrawing groups on the aryl azide without adversely affecting the yield of the amination reaction. The central thiophene ring was created from two thienoindole pieces through a Pd-catalyzed Stille reaction to install the thioether followed by a Cu-mediated Ullman reaction to trigger the cyclization...
July 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28718907/usb-storage-device-forensics-for-windows-10
#3
Ayesha Arshad, Waseem Iqbal, Haider Abbas
Significantly increased use of USB devices due to their user-friendliness and large storage capacities poses various threats for many users/companies in terms of data theft that becomes easier due to their efficient mobility. Investigations for such data theft activities would require gathering critical digital information capable of recovering digital forensics artifacts like date, time, and device information. This research gathers three sets of registry and logs data: first, before insertion; second, during insertion; and the third, after removal of a USB device...
July 18, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28718775/high-performance-top-gated-multilayer-wse2-field-effect-transistors
#4
Pushpa Raj Pudasaini, Michael G Stanford, Akinola Oyedele, Anthony Wong, Anna Hofmann, Dayrl Briggs, Kai Xiao, David G Mandrus, Thomas Z Ward, Philip D Rack
In this paper, high performance top-gated WSe2 field effect transistor (FET) devices are demonstrated via a two-step remote plasma assisted ALD process. High-quality, low-leakage aluminum oxide (Al2O3) gate dielectric layers are deposited onto the WSe2 channel using a remote plasma assisted ALD process with an ultrathin (~1 nm) titanium buffer layer. The first few nanometers (~2 nm) of the Al2O3 dielectric film is deposited at relatively low temperature (i.e. 50 ºC) and remainder of the film is deposited at 150 ºC to ensure the conformal coating of Al2O3 on the WSe2 surface...
July 18, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28717396/intraoperative-radiotherapy-review-of-techniques-and-results
#5
REVIEW
Avinash Pilar, Meetakshi Gupta, Sarbani Ghosh Laskar, Siddhartha Laskar
Intraoperative radiotherapy (IORT) is a technique that involves precise delivery of a large dose of ionising radiation to the tumour or tumour bed during surgery. Direct visualisation of the tumour bed and ability to space out the normal tissues from the tumour bed allows maximisation of the dose to the tumour while minimising the dose to normal tissues. This results in an improved therapeutic ratio with IORT. Although it was introduced in the 1960s, it has seen a resurgence of popularity with the introduction of self-shielding mobile linear accelerators and low-kV IORT devices, which by eliminating the logistical issues of transport of the patient during surgery for radiotherapy or building a shielded operating room, has enabled its wider use in the community...
2017: Ecancermedicalscience
https://www.readbyqxmd.com/read/28716434/training-midwives-to-perform-basic-obstetric-point-of-care-ultrasound-in-rural-areas-using-a-tablet-platform-and-mobile-phone-transmission-technology-a-wfumb-coe-project
#6
Sudhir Vinayak, Joyce Sande, Harvey Nisenbaum, Christian Pállson Nolsøe
Point-of-care ultrasound (POCUS) has become a topical subject and can be applied in a variety of ways with differing outcomes. The cost of all diagnostic procedures including obstetric ultrasound examinations is a major factor in the developing world and POCUS is only useful if it can be equated to good outcomes at a lower cost than a routine obstetric examination. The aim of this study was to assess a number of processes including accuracy of images and reports generated by midwives, performance of a tablet-sized ultrasound scanner, training of midwives to complete ultrasounds, teleradiology solution transmissions of images via internet, review of images by a radiologist, communication between midwife and radiologist, use of this technique to identify high-risk patients and improvement of the education and teleradiology model components...
July 14, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28715196/increasing-the-room-temperature-electric-double-layer-retention-time-in-two-dimensional-crystal-fets
#7
Erich W Kinder, Ashley Fuller, Yu-Chuan Lin, Joshua A Robinson, Susan K Fullerton-Shirey
Poly(vinyl alcohol) (PVA) and LiClO4, a solid polymer electrolyte with a glass transition temperature (Tg) of 80 °C, is used to electrostatically gate graphene field-effect transistors. The ions in PVA:LiClO4 are drifted into place by field-effect at T > Tg, providing n- or p-type doping, and when the device is cooled to room temperature, the polymer mobility and, hence ion mobility are arrested and the electric double layer (EDL) is "locked" into place in the absence of a gate bias. Unlike other electrolytes used to gate two-dimensional devices for which the Tg, and therefore the "locking" temperature, is well below room temperature, the electrolyte demonstrated in this work provides a route to achieve room-temperature EDL stability...
July 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28714903/sensing-responses-based-on-transfer-characteristics-of-inas-nanowire-field-effect-transistors
#8
Alex C Tseng, David Lynall, Igor Savelyev, Marina Blumin, Shiliang Wang, Harry E Ruda
Nanowire-based field-effect transistors (FETs) have demonstrated considerable promise for a new generation of chemical and biological sensors. Indium arsenide (InAs), by virtue of its high electron mobility and intrinsic surface accumulation layer of electrons, holds properties beneficial for creating high performance sensors that can be used in applications such as point-of-care testing for patients diagnosed with chronic diseases. Here, we propose devices based on a parallel configuration of InAs nanowires and investigate sensor responses from measurements of conductance over time and FET characteristics...
July 16, 2017: Sensors
https://www.readbyqxmd.com/read/28714198/enhancing-performance-of-nonfullerene-acceptors-via-side-chain-conjugation-strategy
#9
Jiayu Wang, Wei Wang, Xiaohui Wang, Yang Wu, Qianqian Zhang, Cenqi Yan, Wei Ma, Wei You, Xiaowei Zhan
A side-chain conjugation strategy in the design of nonfullerene electron acceptors is proposed, with the design and synthesis of a side-chain-conjugated acceptor (ITIC2) based on a 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']di(cyclopenta-dithiophene) electron-donating core and 1,1-dicyanomethylene-3-indanone electron-withdrawing end groups. ITIC2 with the conjugated side chains exhibits an absorption peak at 714 nm, which redshifts 12 nm relative to ITIC1. The absorption extinction coefficient of ITIC2 is 2...
July 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28713615/effects-of-radiofrequency-exposure-emitted-from-a-gsm-mobile-phone-on-proliferation-differentiation-and-apoptosis-of-neural-stem-cells
#10
Mahsa Eghlidospour, Amir Ghanbari, Seyyed Mohammad Javad Mortazavi, Hassan Azari
Due to the importance of neural stem cells (NSCs) in plasticity of the nervous system and treating neurodegenerative diseases, the main goal of this study was to evaluate the effects of radiofrequency radiation emitted from a GSM 900-MHz mobile phone with different exposure duration on proliferation, differentiation and apoptosis of adult murine NSCs in vitro. We used neurosphere assay to evaluate NSCs proliferation, and immunofluorescence assay of neural cell markers to examine NSCs differentiation. We also employed alamarBlue and caspase 3 apoptosis assays to assess harmful effects of mobile phone on NSCs...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28713481/gerontechnologies-for-older-patients-with-heart-failure-what-is-the-role-of-smartphones-tablets-and-remote-monitoring-devices-in-improving-symptom-monitoring-and-self-care-management
#11
Ruth M Masterson Creber, Kathleen T Hickey, Mathew S Maurer
Older adults with heart failure have multiple chronic conditions and a large number and range of symptoms. A fundamental component of heart failure self-care management is regular symptom monitoring. Symptom monitoring can be facilitated by cost-effective, easily accessible technologies that are integrated into patients' lives. Technologies that are tailored to older adults by incorporating gerontological design principles are called gerontechnologies. Gerontechnology is an interdisciplinary academic and professional field that combines gerontology and technology with the goals of improving prevention, care, and enhancing the quality of life for older adults...
October 2016: Current Cardiovascular Risk Reports
https://www.readbyqxmd.com/read/28710404/assuring-quality-in-microplastic-monitoring-about-the-value-of-clean-air-devices-as-essentials-for-verified-data
#12
Charlotte Wesch, Anna Maria Elert, Manuel Wörner, Ulrike Braun, Roland Klein, Martin Paulus
Avoiding aerial microfibre contamination of environmental samples is essential for reliable analyses when it comes to the detection of ubiquitous microplastics. Almost all laboratories have contamination problems which are largely unavoidable without investments in clean-air devices. Therefore, our study supplies an approach to assess background microfibre contamination of samples in the laboratory under particle-free air conditions. We tested aerial contamination of samples indoor, in a mobile laboratory, within a laboratory fume hood and on a clean bench with particles filtration during the examining process of a fish...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28709856/developing-smartphone-apps-for-behavioural-studies-the-alcorisk-app-case-study
#13
Anthony Smith, Kristy de Salas, Ian Lewis, Benjamin Schüz
Advances in mobile technology and significantly increasing utilization of mobile devices such as smartphones and tablets have resulted in a paradigm shift from PC-centric computing to mobile computing. The results of careful analysis conducted of this mobile landscape indicate that there is a growing demand for smart, user-centric, situation-aware mobile software. Invariably, concomitant with this demand is the need for methodologies that can provide support the development of this type of software. In this paper, we propose a semantic framework, called the mobile situation-aware framework, which supports efficient modeling, construction, processing, management, and inference of mobile situation information...
July 11, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28709670/arterial-stiffness-in-normotensive-and-hypertensive-subjects-frequency-in-community-pharmacies
#14
Enrique Rodilla Sala, Manuel Adell Alegre, Vicente Giner Galvañ, Zeneida Perseguer Torregrosa, Jose Maria Pascual Izuel, María Teresa Climent Catalá
BACKGROUND AND OBJECTIVE: Arterial stiffness (AS) is a well-recognized target organ lesion. This study aims to determine: 1) the frequency of AS in community pharmacies; 2) if stiffened subjects identified by brachial oscillometry have more CV risk factors than normal subjects, and 3) the dependence of stiffness on using either age-adjusted values or a fixed threshold. PATIENTS AND METHOD: Observational, cross-sectional study in 32 community pharmacies of the Valencia Community, between November/2015 and April/2016...
July 11, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28708565/real-time-adaptation-to-time-varying-constraints-for-medical-video-communications
#15
Zinonas C Antoniou, Andreas S Panayides, Marios Pantziaris, Anthony G Constantinides, Constantinos S Pattichis, Marios S Pattichis
The wider adoption of mobile Health (mHealth) video communication systems in standard clinical practice requires real-time control to provide for adequate levels of clinical video quality to support reliable diagnosis. The latter can only be achieved with real-time adaptation to time-varying wireless networks' state to guarantee clinically acceptable performance throughout the streaming session, while conforming to device capabilities for supporting real-time encoding.
July 12, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28708067/enhanced-handover-decision-algorithm-in-heterogeneous-wireless-network
#16
Radhwan Mohamed Abdullah, Zuriati Ahmad Zukarnain
Transferring a huge amount of data between different network locations over the network links depends on the network's traffic capacity and data rate. Traditionally, a mobile device may be moved to achieve the operations of vertical handover, considering only one criterion, that is the Received Signal Strength (RSS). The use of a single criterion may cause service interruption, an unbalanced network load and an inefficient vertical handover. In this paper, we propose an enhanced vertical handover decision algorithm based on multiple criteria in the heterogeneous wireless network...
July 14, 2017: Sensors
https://www.readbyqxmd.com/read/28707332/conjugated-polymer-for-voltage-controlled-release-of-molecules
#17
Shenghua Liu, Ying Fu, Guijun Li, Li Li, Helen Ka-Wai Law, Xianfeng Chen, Feng Yan
Conjugated polymers are attractive in numerous biological applications because they are flexible, biocompatible, cost-effective, solution-processable, and electronic/ionic conductive. One interesting application is for controllable drug release, and this has been realized previously using organic electronic ion pumps. However, organic electronic ion pumps show high operating voltages and limited transportation efficiency. Here, the first report of low-voltage-controlled molecular release with a novel organic device based on a conjugated polymer poly(3-hexylthiophene) is presented...
July 14, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28706758/solution-based-fabrication-of-polycrystalline-si-thin-film-transistors-from-recycled-polysilanes
#18
Paolo M Sberna, Miki Trifunovic, Ryoichi Ishihara
Currently, research has been focusing on printing and laser crystallization of cyclosilanes, bringing to life polycrystalline silicon (poly-Si) thin-film transistors (TFTs) with outstanding properties. However, the synthesis of these Si-based inks is generally complex and expensive. Here, we prove that a polysilane ink, obtained as a byproduct of silicon gases and derivatives, can be used successfully for the synthesis of poly-Si by laser annealing, at room temperature, and for n- and p-channel TFTs. The devices, fabricated according to CMOS compatible processes at 350 °C, showed field effect mobilities up to 8 and 2 cm(2)/(V s) for n- and p-type TFTs, respectively...
July 3, 2017: ACS Sustainable Chemistry & Engineering
https://www.readbyqxmd.com/read/28706104/use-of-a-mobile-social-networking-intervention-for-weight-management-a-mixed-methods-study-protocol
#19
Liliana Laranjo, Annie Y S Lau, Paige Martin, Huong Ly Tong, Enrico Coiera
INTRODUCTION: Obesity and physical inactivity are major societal challenges and significant contributors to the global burden of disease and healthcare costs. Information and communication technologies are increasingly being used in interventions to promote behaviour change in diet and physical activity. In particular, social networking platforms seem promising for the delivery of weight control interventions.We intend to pilot test an intervention involving the use of a social networking mobile application and tracking devices (Fitbit Flex 2 and Fitbit Aria scale) to promote the social comparison of weight and physical activity, in order to evaluate whether mechanisms of social influence lead to changes in those outcomes over the course of the study...
July 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28705994/wearable-brain-imaging-with-multi-modal-physiological-recording
#20
Gary E Strangman, Vladimir Ivkovic, Quan Zhang
The brain is a central component of cognitive and physical human performance. Measures including functional brain activation, cerebral perfusion, cerebral oxygenation, evoked electrical responses, and resting hemodynamic and electrical activity are all related to, or can predict health status or performance decrements. However, measuring brain physiology typically requires large, stationary machines that are not suitable for mobile or self-monitoring. Moreover, when individuals are ambulatory, systemic physiological fluctuations-e...
July 13, 2017: Journal of Applied Physiology
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