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https://www.readbyqxmd.com/read/28432532/a-portable-battery-powered-microfluidic-impedance-cytometer-with-smartphone-readout-towards-personal-health-monitoring
#1
Niloy Talukder, Abbas Furniturewalla, Tuan Le, Matthew Chan, Shreyas Hirday, Xinnan Cao, Pengfei Xie, Zhongtian Lin, Azam Gholizadeh, Steve Orbine, Mehdi Javanmard
We present a portable system for personalized blood cell counting consisting of a microfluidic impedance cytometer and portable analog readout electronics, feeding into an analog-to-digital converter (ADC), and being transmitted via Bluetooth to a user-accessible mobile application. We fabricated a microfluidic impedance cytometer with a novel portable analog readout. The novel design of the analog readout, which consists of a lock-in-amplifier followed by a high-pass filter stage for subtraction of drift and DC offset, and a post-subtraction high gain stage, enables detection of particles and cells as small as 1 μm in diameter, despite using a low-end 8-bit ADC...
June 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28430499/bc8-silicon-si-iii-is-a-narrow-gap-semiconductor
#2
Haidong Zhang, Hanyu Liu, Kaya Wei, Oleksandr O Kurakevych, Yann Le Godec, Zhenxian Liu, Joshua Martin, Michael Guerrette, George S Nolas, Timothy A Strobel
Large-volume, phase-pure synthesis of BC8 silicon (Ia3[over ¯], cI16) has enabled bulk measurements of optical, electronic, and thermal properties. Unlike previous reports that conclude BC8-Si is semimetallic, we demonstrate that this phase is a direct band gap semiconductor with a very small energy gap and moderate carrier concentration and mobility at room temperature, based on far- and midinfrared optical spectroscopy, temperature-dependent electrical conductivity, Seebeck and heat capacity measurements...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28430147/suitability-of-strain-gage-sensors-for-integration-into-smart-sport-equipment-a-golf-club-example
#3
Anton Umek, Yuan Zhang, Sašo Tomažič, Anton Kos
Wearable devices and smart sport equipment are being increasingly used in amateur and professional sports. Smart sport equipment employs various sensors for detecting its state and actions. The correct choice of the most appropriate sensor(s) is of paramount importance for efficient and successful operation of sport equipment. When integrated into the sport equipment, ideal sensors are unobstructive, and do not change the functionality of the equipment. The article focuses on experiments for identification and selection of sensors that are suitable for the integration into a golf club with the final goal of their use in real time biofeedback applications...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28429807/prediction-of-a-new-bec-monolayer-with-perfectly-planar-tetracoordinate-carbons
#4
Chun-Sheng Liu, Hao-Hao Zhu, Xiao-Juan Ye, Xiao-Hong Yan
Recently, there has been a growing interest in exploring planar hypercoordinate carbons in two-dimensional nanostructures. However, atomic monolayers with ideal planar hypercoordinate carbon are quite rare due to the challenge in stabilizing the exotic motifs. We predicted a global minimum two-dimensional BeC monolayer using the global particle-swarm optimization method. Each carbon binds peripheral four atoms in the same plane, forming a perfectly planar tetracoordinate carbon moiety. The cohesive energy, phonon-spectrum and mechanical stability criteria confirm the stability of monolayer BeC...
April 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28429712/electron-transport-and-visible-light-absorption-in-a-plasmonic-photocatalyst-based-on-strontium-niobate
#5
D Y Wan, Y L Zhao, Y Cai, T C Asmara, Z Huang, J Q Chen, J Hong, S M Yin, C T Nelson, M R Motapothula, B X Yan, D Xiang, X Chi, H Zheng, W Chen, R Xu, Ariando, A Rusydi, A M Minor, M B H Breese, M Sherburne, M Asta, Q-H Xu, T Venkatesan
Semiconductor compounds are widely used for photocatalytic hydrogen production applications, where photogenerated electron-hole pairs are exploited to induce catalysis. Recently, powders of a metallic oxide (Sr1-xNbO3, 0.03<x<0.20) were reported to show competitive photocatalytic efficiencies under visible light, which was attributed to interband absorption. This discovery expanded the range of materials available for optimized performance as photocatalysts. Here we study epitaxial thin films of SrNbO3+δ and find that their bandgaps are ∼4...
April 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28429005/carborane-based-polymers-a-novel-class-of-semiconductors-with-tunable-properties
#6
B Dong, A Oyelade, J A Kelber
Semiconducting boron carbides based on cross-linked carborane (B10C2H12) icosahedra, developed several decades ago, are of significant interest in a variety of emerging areas, including photocatalysis, spintronics, and especially neutron detection. These materials, however, display generally poor charge carrier mobility, high defect levels and other properties that pose significant drawbacks. A class of nanocomposite carborane-based materials has recently been developed, that addresses many of these issues...
April 21, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28428734/defining-a-staged-based-process-for-economic-and-financial-evaluations-of-mhealth-programs
#7
Amnesty E LeFevre, Samuel D Shillcutt, Sean Broomhead, Alain B Labrique, Tom Jones
Mobile and wireless technology for health (mHealth) has the potential to improve health outcomes by addressing critical health systems constraints that impede coverage, utilization, and effectiveness of health services. To date, few mHealth programs have been implemented at scale and there remains a paucity of evidence on their effectiveness and value for money. This paper aims to improve understanding among mHealth program managers and key stakeholders of how to select methods for economic evaluation (comparative analysis for determining value for money) and financial evaluation (determination of the cost of implementing an intervention, estimation of costs for sustaining or expanding an intervention, and assessment of its affordability)...
2017: Cost Effectiveness and Resource Allocation: C/E
https://www.readbyqxmd.com/read/28428642/-technology-and-prevention-in-the-era-of-mobile-health-applications-for-cancer-screening-programs
#8
Fabrizio Bert, Maria Rosaria Gualano, Salvatore Clemente, Giulia Villa, Roberta Siliquini
The Italian national health system provides screening to detect breast, colorecatal and cervical cancers, however, population adherence is not as high as expected. Smartphones and their applications (apps) could be used as a tool to communicate with the population and to help improve adherence. The aim of this study was to analyze the features and functions of smartphone applications aimed at secondary prevention of oncological diseases. In February 2016, we reviewed online app stores, using specific key-words, to search for available apps for cancer screening...
January 2017: Igiene e Sanità Pubblica
https://www.readbyqxmd.com/read/28428165/a-framework-for-the-study-of-complex-mhealth-interventions-in-diverse-cultural-settings
#9
Marion A Maar, Karen Yeates, Nancy Perkins, Lisa Boesch, Diane Hua-Stewart, Peter Liu, Jessica Sleeth, Sheldon W Tobe
BACKGROUND: To facilitate decision-making capacity between options of care under real-life service conditions, clinical trials must be pragmatic to evaluate mobile health (mHealth) interventions under the variable conditions of health care settings with a wide range of participants. The mHealth interventions require changes in the behavior of patients and providers, creating considerable complexity and ambiguity related to causal chains. Process evaluations of the implementation are necessary to shed light on the range of unanticipated effects an intervention may have, what the active ingredients in everyday practice are, how they exert their effect, and how these may vary among recipients or between sites...
April 20, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28428158/mobile-application-to-promote-adherence-to-oral-chemotherapy-and-symptom-management-a-protocol-for-design-and-development
#10
Joel Nathan Fishbein, Lauren Ellen Nisotel, James John MacDonald, Nicole Amoyal Pensak, Jamie Michele Jacobs, Clare Flanagan, Kamal Jethwani, Joseph Andrew Greer
BACKGROUND: Oral chemotherapy is increasingly used in place of traditional intravenous chemotherapy to treat patients with cancer. While oral chemotherapy includes benefits such as ease of administration, convenience, and minimization of invasive infusions, patients receive less oversight, support, and symptom monitoring from clinicians. Additionally, adherence is a well-documented challenge for patients with cancer prescribed oral chemotherapy regimens. With the ever-growing presence of smartphones and potential for efficacious behavioral intervention technology, we created a mobile health intervention for medication and symptom management...
April 20, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28427924/long-term-deterioration-of-perceived-health-and-functioning-in-adults-with-cerebral-palsy
#11
Joyce L Benner, Sander R Hilberink, Thessa Veenis, Henk J Stam, Wilma M A van der Slot, Marij E Roebroeck
OBJECTIVE: To describe longitudinal change in perceived health, presence of health issues and functional level in adults with cerebral palsy (CP). DESIGN: Prospective cohort study. SETTING: Participants who completed baseline assessments in 1996 or 2000 were invited for a long-term follow-up in 2010. PARTICIPANTS: Forty-nine Dutch adults with CP (age 35-45 years, 55% male, 75% spastic) formerly known in pediatric rehabilitation care...
April 17, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28427790/exercise-and-ckd-skeletal-muscle-dysfunction-and-practical-application-of-exercise-to-prevent-and-treat-physical-impairments-in-ckd
#12
Baback Roshanravan, Jorge Gamboa, Kenneth Wilund
Patients with chronic kidney disease experience substantial loss of muscle mass, weakness, and poor physical performance. As kidney disease progresses, skeletal muscle dysfunction forms a common pathway for mobility limitation, loss of functional independence, and vulnerability to disease complications. Screening for those at high risk for mobility disability by self-reported and objective measures of function is an essential first step in developing an interdisciplinary approach to treatment that includes rehabilitative therapies and counseling on physical activity...
April 18, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28427097/systematic-quantification-of-gpcr-camp-controlled-protein-kinase-a-interactions
#13
O Torres-Quesada, R Röck, E Stefan
The diffusible second messenger cyclic AMP (cAMP) originates from multiple G protein-coupled receptor (GPCR) cascades activating the intracellular key effector protein kinase A (PKA). Spatially and temporally restricted cAMP-fluxes are directly sensed by macromolecular PKA complexes. The consequences are alterations of molecular interactions, which lead to activation of compartmentalized PKA phosphotransferase activities, regulating a vast array of cellular functions. To decode cell-type and cell-compartment specific PKA functions, the spatio-temporal dynamics of small molecule:protein interactions, protein:protein interactions (PPIs), cAMP-mobilization, and phosphotransferase activities need to be determined directly in the appropriate cellular context...
April 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28426176/uhplc-ms-ms-method-for-the-simultaneous-quantitation-of-five-anthraquinones-and-gallic-acid-in-rat-plasma-after-oral-administration-of-prepared-rhubarb-decoction-and-its-application-to-a-pharmacokinetic-study-in-normal-and-acute-blood-stasis-rats
#14
Hui Zhu, Xiao Liu, Ting Ting Zhu, Xiao Li Wang, Kun Ming Qin, Ke Pei, Bao Chang Cai
Prepared rhubarb, as one of the main processed products of rhubarb, has a good effect on promoting blood circulation. This paper described a rapid, sensitive and selective ultra-fast liquid chromatography with tandem mass spectrometry method for simultaneous quantification of five anthraquinones (rhein, aloe-emodin, chrysophanol, emodin and physcion) and gallic acid in plasma. Chromatographic separation was performed on an Extend C18 column at the temperature of 30°C using the mobile phase consisted of 0.1% aqueous formic acid and acetonitrile...
April 20, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28425777/self-reported-dependence-on-mobile-phones-in-young-adults-a-european-cross-cultural-empirical-survey
#15
Olatz Lopez-Fernandez, Daria J Kuss, Lucia Romo, Yannick Morvan, Laurence Kern, Pierluigi Graziani, Amélie Rousseau, Hans-Jürgen Rumpf, Anja Bischof, Ann-Kathrin Gässler, Adriano Schimmenti, Alessia Passanisi, Niko Männikkö, Maria Kääriänen, Zsolt Demetrovics, Orsolya Király, Mariano Chóliz, Juan José Zacarés, Emilia Serra, Mark D Griffiths, Halley M Pontes, Bernadeta Lelonek-Kuleta, Joanna Chwaszcz, Daniele Zullino, Lucien Rochat, Sophia Achab, Joël Billieux
Background and aims Despite many positive benefits, mobile phone use can be associated with harmful and detrimental behaviors. The aim of this study was twofold: to examine (a) cross-cultural patterns of perceived dependence on mobile phones in ten European countries, first, grouped in four different regions (North: Finland and UK; South: Spain and Italy; East: Hungary and Poland; West: France, Belgium, Germany, and Switzerland), and second by country, and (b) how socio-demographics, geographic differences, mobile phone usage patterns, and associated activities predicted this perceived dependence...
April 20, 2017: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/28425052/dmso-assisted-electrospray-ionization-for-the-detection-of-small-peptide-hormones-in-urine-by-dilute-and-shoot-liquid-chromatography-high-resolution-mass-spectrometry
#16
Péter Judák, Janelle Grainger, Catrin Goebel, Peter Van Eenoo, Koen Deventer
The mobile phase additive (DMSO) has been described as a useful tool to enhance electrospray ionization (ESI) of peptides and proteins. So far, this technique has mainly been used in proteomic/peptide research, and its applicability in a routine clinical laboratory setting (i.e., doping control analysis) has not been described yet. This work provides a simple, easy to implement screening method for the detection of doping relevant small peptides (GHRPs, GnRHs, GHS, and vasopressin-analogues) with molecular weight less than 2 kDa applying DMSO in the mobile phase...
April 19, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28424945/date-palm-waste-biochars-alter-a-soil-respiration-microbial-biomass-carbon-and-heavy-metal-mobility-in-contaminated-mined-soil
#17
Mohammad I Al-Wabel, Adel Rabie A Usman, Abdullah S Al-Farraj, Yong Sik Ok, Adel Abduljabbar, Abdulelah I Al-Faraj, Abdelazeem S Sallam
A 30-day incubation experiment was conducted using a heavy metal-contaminated mined soil amended with date palm feedstock (FS) and its derivative biochars (BCs) at three pyrolysis temperatures of 300 (BC-300), 500 (BC-500), and 700 °C (BC-700) with different application rates (0.0, 5, 15, and 30 g kg(-1)) to investigate their short-term effects on soil respiration (CO2-C efflux), microbial biomass carbon (MBC), soil organic carbon (SOC), mobile fraction of heavy metals (Cd, Cu, Pb, Zn, Mn, and Fe), pH, and electrical conductivity (EC)...
April 19, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28424489/porous-graphene-sponge-additives-for-lithium-ion-batteries-with-excellent-rate-capability
#18
Qian Cheng
Rate capability as well as power performance of lithium ion batteries (LiBs) is becoming more and more important, especially as the application targets of LiBs move from mobile devices to transportation, such as EVs and HEVs. In this research, we report porous graphene sponge additives for both anode and cathode materials for better rate performance. The charge capacity retention improved from 56% to 77% at 6C and from 7% to 45% at 10C with 0.5 wt% added to the anode, while the discharge capacity retention at the 6C rate improved from 43% to 76% and the 10C rate discharge improved from 16% to 40% with the same amount of MG added to the cathode...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28423812/designing-an-e-learning-platform-for-postoperative-arthroplasty-adverse-events
#19
Ole Andreas Krumsvik, Ankica Babic
This paper presents a mobile software application development for e-learning based on the adverse events data within the field of arthroplasty. The application aims at providing a learning platform for physicians, patients, and medical students. Design of user interface aims to meet requirements of several user groups concerned with the adverse events of the knee and hip implants. Besides the clinical patient data, the platform wants to include even electronic patient data as a result of self-monitoring. Two different modules were created, one for medical staff and one for patients, both divided into the knee and hip areas...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28423757/a-medication-reminder-mobile-app-does-it-work-for-different-age-ranges
#20
Mina Fallah, Mobin Yasini
Successful medication adherence particularly in elderly with chronic diseases will improve their self-management. Medication reminder systems could be useful to improve this adherence. This study consists of two phases, designing a mobile medical app based on Android platform and then its evaluation. To develop this application, first, the use case scenarios have been hypothesized in partnership with health professionals and patients used to take medications daily. Unified Modeling Language was used to model the use cases...
2017: Studies in Health Technology and Informatics
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