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https://www.readbyqxmd.com/read/29350151/risk-communication-and-ebola-specific-knowledge-and-behavior-during-2014-2015-outbreak-sierra-leone
#1
Maike Winters, Mohamed F Jalloh, Paul Sengeh, Mohammad B Jalloh, Lansana Conteh, Rebecca Bunnell, Wenshu Li, Zangin Zeebari, Helena Nordenstedt
We assessed the effect of information sources on Ebola-specific knowledge and behavior during the 2014-2015 Ebola virus disease outbreak in Sierra Leone. We pooled data from 4 population-based knowledge, attitude, and practice surveys (August, October, and December 2014 and July 2015), with a total of 10,604 respondents. We created composite variables for exposures (information sources: electronic, print, new media, government, community) and outcomes (knowledge and misconceptions, protective and risk behavior) and tested associations by using logistic regression within multilevel modeling...
February 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29349821/biodegradable-electronic-systems-in-3d-heterogeneously-integrated-formats
#2
Jan-Kai Chang, Hui-Ping Chang, Qinglei Guo, Jahyun Koo, Chih-I Wu, John A Rogers
Biodegradable electronic systems represent an emerging class of technology with unique application possibilities, from temporary biomedical implants to "green" consumer gadgets. This paper introduces materials and processing methods for 3D, heterogeneously integrated devices of this type, with various functional examples in sophisticated forms of silicon-based electronics. Specifically, techniques for performing multilayer assembly by transfer printing and for fabricating layer-to-layer vias and interconnects by lithographic procedures serve as routes to biodegradable, 3D integrated circuits composed of functional building blocks formed using specialized approaches or sourced from commercial semiconductor foundries...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29345430/wearable-wireless-tyrosinase-bandage-and-microneedle-sensors-toward-melanoma-screening
#3
Bianca Ciui, Aida Martin, Rupesh K Mishra, Barbara Brunetti, Tatsuo Nakagawa, Thomas J Dawkins, Mengjia Lyu, Cecilia Cristea, Robert Sandulescu, Joseph Wang
Wearable bendable bandage-based sensor and a minimally invasive microneedle biosensor are described toward rapid screening of skin melanoma. These wearable electrochemical sensors are capable of detecting the presence of the tyrosinase (TYR) enzyme cancer biomarker in the presence of its catechol substrate, immobilized on the transducer surface. In the presence of the surface TYR biomarker, the immobilized catechol is rapidly converted to benzoquinone that is detected amperometrically, with a current signal proportional to the TYR level...
January 18, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29342960/a-low-cost-inkjet-printed-aptamer-based-electrochemical-biosensor-for-the-selective-detection-of-lysozyme
#4
Niazul Islam Khan, Alec G Maddaus, Edward Song
Recently, inkjet-printing has gained increased popularity in applications such as flexible electronics and disposable sensors, as well as in wearable sensors because of its multifarious advantages. This work presents a novel, low-cost immobilization technique using inkjet-printing for the development of an aptamer-based biosensor for the detection of lysozyme, an important biomarker in various disease diagnosis. The strong affinity between the carbon nanotube (CNT) and the single-stranded DNA is exploited to immobilize the aptamers onto the working electrode by printing the ink containing the dispersion of CNT-aptamer complex...
January 15, 2018: Biosensors
https://www.readbyqxmd.com/read/29342953/review-of-recent-metamaterial-microfluidic-sensors
#5
REVIEW
Ahmed Salim, Sungjoon Lim
Metamaterial elements/arrays exhibit a sensitive response to fluids yet with a small footprint, therefore, they have been an attractive choice to realize various sensing devices when integrated with microfluidic technology. Micro-channels made from inexpensive biocompatible materials avoid any contamination from environment and require only microliter-nanoliter sample for sensing. Simple design, easy fabrication process, light weight prototype, and instant measurements are advantages as compared to conventional (optical, electrochemical and biological) sensing systems...
January 15, 2018: Sensors
https://www.readbyqxmd.com/read/29338816/fabrication-of-isoniazid-rifampicin-poly-l-lactic-acid-donut-shaped-implants-via-three-dimensional-printing-technique
#6
Gui Wu, Wei Gang Wu, Jian Bo Zhou, Qi Xin Zheng
Objective To investigate the possibility of manufacturing dual-drug loaded isoniazid/rifampicin/poly L-lactic acid (PLLA) implant with donut-shaped structure via three-dimensional (3D) printing technique and study the drug release characteristic and biocompatibility of the implant in vitro.Methods PLLA was crushed into particles with diameters around 75-100 μm.Isoniazid and rifampicin bulk drugs were dissolved into the organic dissolvent respectively to be the binding liquid.The 3D printing machine fabricated the donut-shaped implant via binding the PLLA powder layer by layer...
December 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29337394/3d-printing-of-materials-with-tunable-failure-via-bioinspired-mechanical-gradients
#7
Dimitri Kokkinis, Florian Bouville, André R Studart
Mechanical gradients are useful to reduce strain mismatches in heterogeneous materials and thus prevent premature failure of devices in a wide range of applications. While complex graded designs are a hallmark of biological materials, gradients in manmade materials are often limited to 1D profiles due to the lack of adequate fabrication tools. Here, a multimaterial 3D-printing platform is developed to fabricate elastomer gradients spanning three orders of magnitude in elastic modulus and used to investigate the role of various bioinspired gradient designs on the local and global mechanical behavior of synthetic materials...
January 16, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29334943/training-programmes-to-improve-evidence-uptake-and-utilisation-by-physiotherapists-a-systematic-scoping-review
#8
Jessica Stander, Karen Grimmer, Yolandi Brink
BACKGROUND: Research training programmes are a knowledge translation (KT) intervention which aim to improve research evidence uptake by clinicians. Whilst KT training programmes have been reported to significantly improve evidence uptake by physiotherapists, it is unclear which aspects of training optimally assist KT into physiotherapy practice. The purpose of the review was to establish the body of evidence regarding KT training programmes to improve physiotherapists' use of evidence-based practice (EBP) and clinical practice guidelines (CPG)...
January 15, 2018: BMC Medical Education
https://www.readbyqxmd.com/read/29332837/a-novel-electroanalytical-assay-for-sulfamethazine-determination-in-food-samples-based-on-conducting-polymer-nanocomposite-modified-electrodes
#9
Ya-Ling Su, Shu-Hua Cheng
The toxicity of sulfa drugs has attracted great attention, and the reported electrochemical methods for sulfa drugs usually employ a high oxidation potential. In this work, a one-pot synthesized conducting polymer nanocomposite containing poly(3,4-ethylenedioxythiophene) (PEDOT) and MnO2 was cast on a screen-printed carbon electrode (SPCE), and the modified electrode showed superior electrochemical activity over a bare electrode for sulfamethazine (SMZ) determination. The SMZ detection was based on the electrochemical oxidation product, which showed an adsorptive property and exhibited a redox couple at 0...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331970/is-there-a-social-gradient-of-sarcopenia-a-meta-analysis-and-systematic-review-protocol
#10
Darci Green, Gustavo Duque, Nick Fredman, Aoun Rizvi, Sharon Lee Brennan-Olsen
INTRODUCTION: Sarcopenia (or loss of muscle mass and function) is a relatively new area within the field of musculoskeletal research and medicine. Investigating whether there is a social gradient, including occupation type and income level, of sarcopenia, as observed for other diseases, will contribute significantly to the limited evidence base for this disease. This new information may inform the prevention and management of sarcopenia and widen the evidence base to support existing and future health campaigns...
January 13, 2018: BMJ Open
https://www.readbyqxmd.com/read/29331776/low-cost-screen-printed-electrodes-based-on-electrochemically-reduced-graphene-oxide-carbon-black-nanocomposites-for-dopamine-epinephrine-and-paracetamol-detection
#11
G Ibáñez-Redín, D Wilson, D Gonçalves, O N Oliveira
A green approach for the preparation of carbon black (CB) and electrochemically reduced graphene oxide composite (ERGO) is described based on screen printed carbon electrodes (SPCEs) fabricated on poly(ethylene terephthalate) (PET) as electrochemical sensors. This approach leads to a heterogeneous hydrophilic surface with high concentration of defect sites according to scanning electron microscopy, contact angle and Raman spectroscopy measurements. The SPCE/CB-ERGO sensor was tested with dopamine (DA), epinephrine (EP) and paracetamol (PCM), exhibiting an enhanced electrocatalytic performance compared to the bare SPCE...
December 30, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29331259/public-and-physician-s-expectations-and-ethical-concerns-about-electronic-health-record-benefits-outweigh-risks-except-for-information-security
#12
Eleni Entzeridou, Evgenia Markopoulou, Vasiliki Mollaki
INTRODUCTION: Electronic Health Record systems (EHRs) offer numerous benefits in health care but also pose certain risks. As we progress toward the implementation of EHRs, a more in-depth understanding of attitudes that influence overall levels of EHR support is required. OBJECTIVES: To record public and physicians' awareness, expectations for, and ethical concerns about the use of EHRs. METHODS: A convenience sample was surveyed for both the public and physicians...
February 2018: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/29327744/spinel-co3o4-nanomaterials-for-efficient-and-stable-large-area-carbon-based-printed-perovskite-solar-cells
#13
Amna Bashir, Sudhanshu Shukla, Jia Haur Lew, Shashwat Shukla, Annalisa Bruno, Disha Gupta, Tom Baikie, Rahul Patidar, Zareen Akhter, Anish Priyadarshi, Nripan Mathews, Subodh G Mhaisalkar
Carbon based perovskite solar cells (PSCs) are fabricated through easily scalable screen printing techniques, using abundant and cheap carbon to replace the hole transport material (HTM) and the gold electrode further reduces costs, and carbon acts as a moisture repellent that helps in maintaining the stability of the underlying perovskite active layer. An inorganic interlayer of spinel cobaltite oxides (Co3O4) can greatly enhance the carbon based PSC performance by suppressing charge recombination and extracting holes efficiently...
January 12, 2018: Nanoscale
https://www.readbyqxmd.com/read/29327577/interplay-of-interfacial-layers-and-blend-composition-to-reduce-thermal-degradation-of-polymer-solar-cells-at-high-temperature
#14
Sadok Ben Dkhil, Martin Pfannmöller, Rasmus R Schroeder, Riva Alkarsifi, Meriem Gaceur, Wolfgang Köntges, Hamed Heidari, Sara Bals, Olivier Margeat, Jörg Ackermann, Christine Videlot-Ackermann
The thermal stability of printed polymer solar cells at elevated temperatures needs to be improved to achieve high-throughput fabrication including annealing steps as well as long-term stability. During device processing, thermal annealing impact both the organic photoactive layer and the two interfacial layers making detailed studies of degradation mechanism delicate. A recently identified thermally stable PTB7:PC70BM blend as photoactive layer in combination with PEDOT:PSS as hole extraction layer is used here to focus on the impact of electron extraction layer (EEL) on the thermal stability of solar cells...
January 12, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29324440/micro-patterned-graphene-based-sensing-skins-for-human-physiological-monitoring
#15
Long Wang, Kenneth J Loh, Wei-Hung Chiang, Kausik Manna
Ultrathin, flexible, conformal, and skin-like electronic transducers are emerging as promising candidates for noninvasive and nonintrusive human health monitoring. In this work, a wearable sensing membrane is developed by patterning a graphene-based solution onto ultrathin medical tapes, which can then be attached to the skin for monitoring human physiological parameters and physical activity. Here, the sensor is validated for monitoring finger bending/movements and for recognizing hand motion patterns, thereby demonstrating its future potential for evaluating athletic performance, physical therapy, and designing next-generation human-machine interfaces...
January 11, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29321501/green-synthesis-of-graphene-oxide-by%C3%A2-seconds-timescale-water-electrolytic-oxidation
#16
Songfeng Pei, Qinwei Wei, Kun Huang, Hui-Ming Cheng, Wencai Ren
Graphene oxide is highly desired for printing electronics, catalysis, energy storage, separation membranes, biomedicine, and composites. However, the present synthesis methods depend on the reactions of graphite with mixed strong oxidants, which suffer from explosion risk, serious environmental pollution, and long-reaction time up to hundreds of hours. Here, we report a scalable, safe and green method to synthesize graphene oxide with a high yield based on water electrolytic oxidation of graphite. The graphite lattice is fully oxidized within a few seconds in our electrochemical oxidation reaction, and the graphene oxide obtained is similar to those achieved by the present methods...
January 10, 2018: Nature Communications
https://www.readbyqxmd.com/read/29320428/monitoring-reaction-paths-using-vibrational-spectroscopies-the-case-of-the-dehydrogenation-of-propane-toward-propylene-on-pd-doped-cu-111-surface
#17
Wei Hu, Xinrui Cao
Monitoring reaction paths is not only a fundamental scientific issue but also helps us to understand and optimize the catalytic process. Infrared (IR) and Raman spectroscopies are powerful tools for detecting particular molecules or intermediate products as a result of their ability to provide the molecular "finger-print". However, theoretical modeling for the vibrational spectra of molecular adsorbates on metallic surfaces is a long-standing challenge, because accurate descriptions of the electronic structure for both the metallic substrates and adsorbates are required...
January 10, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29319214/printable-transparent-conductive-films-for-flexible-electronics
#18
REVIEW
Dongdong Li, Wen-Yong Lai, Yi-Zhou Zhang, Wei Huang
Printed electronics are an important enabling technology for the development of low-cost, large-area, and flexible optoelectronic devices. Transparent conductive films (TCFs) made from solution-processable transparent conductive materials, such as metal nanoparticles/nanowires, carbon nanotubes, graphene, and conductive polymers, can simultaneously exhibit high mechanical flexibility, low cost, and better photoelectric properties compared to the commonly used sputtered indium-tin-oxide-based TCFs, and are thus receiving great attention...
January 10, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29317379/effect-of-a-gender-tailored-ehealth-weight-loss-program-on-the-depressive-symptoms-of-overweight-and-obese-men-pre-post-study
#19
Myles D Young, Philip J Morgan
BACKGROUND: Obesity and depression are of two of the largest contributors to the global burden of disease in men. Although lifestyle behavior change programs can improve participants' weight and depressive symptoms, the evidence is limited by a lack of male participants and a reliance on face-to-face treatment approaches, which are not accessible or appealing for many men. OBJECTIVE: This study examined the effect of a gender-tailored electronic health (eHealth) program on the depressive symptoms of a community sample of overweight and obese men with or without depression...
January 9, 2018: JMIR Mental Health
https://www.readbyqxmd.com/read/29316318/a-perspective-review-on-the-materials-and-mechanisms-of-photo-assisted-chemical-reactions-under-light-and-dark-can-it-be-called-as-day-night-photocatalysis
#20
Sakar Mohan, Nguyen Chinh-Chien, Vu Manh-Hiep, Trong-On Do
The photo-assisted catalytic reaction, conventionally known as photocatalysis, is blooming into the field of energy and environmental applications. It is widely known that the discovery of TiO2-assited photochemical reactions has led to achieve several unique applications such as degradation of pollutants in water and air, hydrogen production through water splitting, fuel conversion, cancer treatment, anti-bacterial activity, self-cleaning glasses and concrete, etc. These multifaceted applications of this phenomenon can be enriched and expanded further if this process is equipped with more tools and functions...
January 8, 2018: ChemSusChem
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