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https://www.readbyqxmd.com/read/29786963/design-and-fabrication-of-printed-paper-based-hybrid-micro-supercapacitor-by-using-graphene-and-redox-active-electrolyte
#1
Bhawna Nagar, Deepak P Dubal, Luis Pires, Arben Merkoçi, Pedro Gómez-Romero
Inspired by future needs of flexible, simple, and low-cost energy storage devices, smart graphene-based micro-supercapacitors on conventional Xerox paper substrates were developed. The use of redox-active species (iodine redox couple) was explored to further improve the paper device's performance. The device based on printed graphene paper itself already had a remarkable maximum volumetric capacitance of 29.6 mF cm-3 (volume of whole device) at 6.5 mA cm-3 . The performance of the hybrid electrode with redox-active potassium iodide at the graphene surface was tested...
May 22, 2018: ChemSusChem
https://www.readbyqxmd.com/read/29786028/evaluation-of-a-distance-learning-academic-support-program-for-medical-graduates-during-rural-hospital-service-in-india
#2
Rashmi Vyas, Anand Zachariah, Isobel Swamidasan, Priya Doris, Ilene Harris
Background: Christian Medical College (CMC), Vellore, India, a tertiary care hospital, designed a year-long Fellowship in Secondary Hospital Medicine (FSHM) for CMC graduates, with the aim to support them during rural service and be motivated to consider practicing in these hospitals. The FSHM was a blend of 15 paper-based distance learning modules, 3 contact sessions, community project work, and networking. This paper reports on the evaluation of the FSHM program. Methods: The curriculum development process for the FSHM reflected the six-step approach including problem identification, needs assessment, formulating objectives, selecting educational strategies, implementation, and evaluation...
September 2017: Education for Health: Change in Training & Practice
https://www.readbyqxmd.com/read/29782145/stackable-lab-on-paper-device-with-all-in-one-au-electrode-for-high-efficiency-photoelectrochemical-cyto-sensing
#3
Hongmei Yang, Yan Zhang, Lina Zhang, Kang Cui, Shenguang Ge, Jiadong Huang, Jinghua Yu
Highly conductive, robust, and multifunctional integrated paper-supported electrodes are requisite to fulfill the promise of paper-based analytical application. Herein, an all-in-one Au electrode comprising of detection zone, waterproof electronic bridge, and signal output contactor was engineered via combining the double-sided growth method with the secondary wax-printing. Benefiting from the strongly omnidirectional conductivity and desirably mechanical robustness of the as-prepared electrode, a stackable lab-on-paper cyto-device integrated with high-efficiency photoelectrochemical strategy was developed for the MCF-7 cells assay...
May 21, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29778001/patchy-gold-coated-fe-3-o-4-nanospheres-with-enhanced-catalytic-activity-applied-for-paper-based-bipolar-electrode-electrochemiluminescence-aptasensors
#4
Xin Zhang, Ning Bao, Xiliang Luo, Shou-Nian Ding
In this work, novel multifunctional patchy gold coated Fe3 O4 hybrid nanoparticles (PG-Fe3 O4 NPs) have been successfully synthesized in aqueous medium via a facile adsorption-reduction method. A rational formation mechanism has been proposed by monitoring the morphological evolution. The PG-Fe3 O4 NPs retained the good magnetic property and exhibited excellent catalytical effeciency towards the electrochemical reduction of hydrogen peroxide. Chronoamperometric and amperometric experiments indicated a relatively high catalytic rate constant of 3...
May 10, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29775513/conflicting-priorities-observation-of-medicines-administration
#5
Johanne Alteren, Marit Hermstad, Jo White, Susan Jordan
AIMS AND OBJECTIVES: To identify sources of interruptions and distractions to medicine administration rounds in hospitals. BACKGROUND: Nurses are frequently interrupted during medicine administration. There is no systematic description of nurses' behaviours and interruptions during administration of medicines to patients. DESIGN: Exploratory non-participant observational study. METHODS: Three hundred and fifty-one episodes of medicines administration with 32 nurses from three hospitals in Norway were observed using paper-based observation grids between December 2013 and March 2014...
May 18, 2018: Journal of Clinical Nursing
https://www.readbyqxmd.com/read/29772077/a-feature-alignment-score-for-online-cone-beam-ct-based-image-guided-radiotherapy-for-prostate-cancer
#6
Catriona Hargrave, Timothy Deegan, Michael Poulsen, Tomasz Bednarz, Fiona Harden, Kerrie Mengersen
PURPOSE: To develop a method for scoring online cone-beam CT (CBCT)-to-planning CT image feature alignment to inform prostate image-guided radiotherapy (IGRT) decision-making. The feasibility of incorporating volume variation metric thresholds, predictive of delivering planned dose into weighted functions, was investigated. METHODS: Radiation therapists and radiation oncologists participated in workshops where they reviewed prostate CBCT-IGRT case examples and completed a paper-based survey of image feature matching practices...
May 17, 2018: Medical Physics
https://www.readbyqxmd.com/read/29769789/-formula-see-text-convergence-complete-convergence-and-weak-laws-of-large-numbers-for-asymptotically-negatively-associated-random-vectors-with-values-in-formula-see-text
#7
Mi-Hwa Ko
In this paper, based on the Rosenthal-type inequality for asymptotically negatively associated random vectors with values in [Formula: see text], we establish results on [Formula: see text]-convergence and complete convergence of the maximums of partial sums are established. We also obtain weak laws of large numbers for coordinatewise asymptotically negatively associated random vectors with values in [Formula: see text].
2018: Journal of Inequalities and Applications
https://www.readbyqxmd.com/read/29769263/how-i-treat-burkitt-lymphoma-in-children-adolescents-and-young-adults-in-sub-saharan-africa
#8
Satish Gopal, Thomas G Gross
Burkitt lymphoma (BL) is the most common pediatric cancer in sub-Saharan Africa (SSA), and also occurs frequently among adolescents and young adults (AYA), often associated with human immunodeficiency virus (HIV). Treating BL in SSA poses particular challenges. Although highly effective, high-intensity cytotoxic treatments used in resource-rich settings are usually not feasible, and lower-intensity continuous infusion approaches are impractical. In this paper, based on evidence from the region, we review management strategies for SSA focused on diagnosis, use of pre-phase, and definitive treatment...
May 16, 2018: Blood
https://www.readbyqxmd.com/read/29768265/disease-burden-psychological-well-being-and-attitudes-regarding-the-set-of-emergency-medication-in-adults-with-insect-venom-allergy
#9
Marthe-Lisa Schaarschmidt, Mandy Gutknecht, Lisa Schoeben, Astrid Schmieder
BACKGROUND: Insect venom allergy is common and greatly impairs patients' quality of life. Additionally, low compliance with carrying emergency medication is reported. The aim of our study was to analyze the disease burden, levels of anxiety and depression, and to evaluate attitudes towards the set of emergency medication in affected patients. METHODS: Between April 2016 and January 2017, patients ≥18 years visiting our department because of an insect venom allergy were asked to complete a paper-based questionnaire...
May 16, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29767208/insights-into-the-thermal-phase-transition-behavior-of-a-gemini-dicationic-polyelectrolyte-in-aqueous-solution
#10
Yingna Zhang, Hui Tang, Peiyi Wu
The thermal-induced phase transition behavior of a LCST-type poly(ionic liquid) (PIL) aqueous solution with gemini-cationic structure, poly[(1,8-octanediyl-bis(tri-n-butylphosphonium)4-styrene sulfonate)] (P[SS-P2]), was investigated in this paper. Based on the calorimetric measurements, a unique dependence of transition points on concentration was found in P[SS-P2] aqueous solution compared to its mono-cationic PIL and [SS-P2] aqueous solution. Optical microscopy showed that globular microscopic droplets were formed during the phase transition, suggesting that gemini dications and the possible dynamic ionic bonds may facilitate the liquid-liquid phase separation (LLPS) in P[SS-P2] aqueous solution...
May 16, 2018: Soft Matter
https://www.readbyqxmd.com/read/29766658/ampli-a-construction-set-for-paperfluidic-systems
#11
Elizabeth A Phillips, Anna K Young, Nikolas Albarran, Jonah Butler, Kaira Lujan, Kimberly Hamad-Schifferli, Jose Gomez-Marquez
The design and fabrication of reconfigurable, modular paperfluidics driven by a prefabricated reusable block library, asynchronous modular paperfluidic linear instrument-free (Ampli) block, are reported. The blocks are inspired by the plug-and-play modularity of electronic breadboards that lower prototyping barriers in circuit design. The resulting biochemical breadboard is a paperfluidic construction set that can be functionalized with chemical, biological, and electrical elements. Ampli blocks can form standard paperfluidic devices without any external instrumentation...
May 15, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29762511/pcpa-a-practical-certificateless-conditional-privacy-preserving-authentication-scheme-for-vehicular-ad-hoc-networks
#12
Yang Ming, Xiaoqin Shen
Vehicle ad hoc networks (VANETs) is a promising network scenario for greatly improving traffic efficiency and safety, in which smart vehicles can communicate with other vehicles or roadside units. For the availability of VANETs, it is very important to deal with the security and privacy problems for VANETs. In this paper, based on certificateless cryptography and elliptic curve cryptography, we present a certificateless signature with message recovery (CLS-MR), which we believe are of independent interest. Then, a practical certificateless conditional privacy preserving authentication (PCPA) scheme is proposed by incorporating the proposed CLS-MR scheme...
May 15, 2018: Sensors
https://www.readbyqxmd.com/read/29761701/semi-quantitative-nucleic-acid-test-with-simultaneous-isotachophoretic-extraction-and-amplification
#13
Andrew T Bender, Mark D Borysiak, Amanda M Levenson, Lorraine Lillis, David S Boyle, Jonathan D Posner
Nucleic acid amplification tests (NAATs) provide high diagnostic accuracy for infectious diseases and quantitative results for monitoring viral infections. The majority of NAATs require complex equipment, cold chain dependent reagents, and skilled technicians to perform tests. This largely confines NAATs to centralized laboratories and can significantly delay appropriate patient care. Low-cost, point-of-care (POC) NAATs are especially needed in low-resource settings to provide patients with diagnosis and treatment planning in a single visit to improve patient care...
May 15, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29761636/physical-activity-and-parents-of-very-young-children-the-role-of-beliefs-and-social-cognitive-factors
#14
Eloise Cowie, Katherine White, Kyra Hamilton
OBJECTIVES: Despite the unequivocal benefits of regular physical activity, many parents engage in lower levels of physical activity (PA) following the birth of a child. Drawing on the theory of planned behaviour (TPB) and health action process approach (HAPA), an integrative model was developed to examine variables predicting PA in parents of very young children. In addition, key beliefs related to PA intentions and behaviour among parents of very young children were investigated. DESIGN: A prospective-correlational design with two waves of data collection, spaced one week apart, was adopted...
May 14, 2018: British Journal of Health Psychology
https://www.readbyqxmd.com/read/29761564/laser-induced-molybdenum-carbide-graphene-composites-for-3d-foldable-paper-electronics
#15
Xining Zang, Caiwei Shen, Yao Chu, Buxuan Li, Minsong Wei, Junwen Zhong, Mohan Sanghadasa, Liwei Lin
Versatile and low-cost manufacturing processes/materials are essential for the development of paper electronics. Here, a direct-write laser patterning process is developed to make conductive molybdenum carbide-graphene (MCG) composites directly on paper substrates. The hierarchically porous MCG structures are converted from fibrous paper soaked with the gelatin-mediated inks containing molybdenum ions. The resulting Mo3 C2 and graphene composites are mechanically stable and electrochemically active for various potential applications, such as electrochemical ion detectors and gas sensors, energy harvesters, and supercapacitors...
May 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29759263/a-bedside-computerized-decision-support-tool-for-intravenous-insulin-infusion-management-in-critically-ill-patients
#16
Evan D Telford, Andrew J Franck, Andrew L Hendrickson, Nicole Maltese Dietrich
Intravenous (IV) insulin infusions using a validated protocol are the recommended method for blood glucose control in critically ill patients. Computerized decision-support tools improve quality over manual paper-based protocols. However, nonproprietary computerized tools targeting the recommended blood glucose range of 140-180 mg/dL are not readily available. A bedside computerized decision-support tool was developed at a US Department of Veterans Affairs health system to assist the nursing staff with the management of patients requiring IV insulin infusion...
May 2018: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/29757375/establishing-the-feasibility-of-a-tablet-based-consent-process-with-older-adults-a-mixed-methods-study
#17
Nimali Jayasinghe, B Isabel Moallem, Margo Kakoullis, Mary-Jane Ojie, Lili Sar-Graycar, Katarzyna Wyka, M Cary Reid, John P Leonard
Purpose of the Study: This mixed-methods study explored the feasibility and acceptability of using a tablet-based research consent process with adults aged ≥65 years. Design and Methods: In the first phase, focus group participants reported on their perceptions of a tablet-based consent process. In the second phase, older adults were randomized to view either a tablet-based or paper-based consent for a mock clinical trial. Measurements included: time to complete, adverse/unexpected events, user-friendliness, immediate comprehension, and retention at a 1-week delay...
May 11, 2018: Gerontologist
https://www.readbyqxmd.com/read/29756453/bacterial-membrane-depolarization-linked-fuel-cell-potential-burst-as-signal-for-selective-detection-of-alcohol
#18
Sharbani Kaushik, Pranab Goswami
The biosensing application of microbial fuel cell (MFC) is hampered by its long response time, poor selectivity, and technical difficulty in developing portable devices. Herein, a novel signal form for rapid detection of ethanol was generated in a photosynthetic MFC (PMFC). First, a dual chambered (100 ml each) PMFC was fabricated by using cyanobacteria based anode and abiotic cathode and its performance was examined for detection of alcohols. A graphene-based nano-biocomposite matrix was layered over graphite anode to support cyanobacterial biofilm growth and to facilitate electron transfer...
May 14, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29755926/challenges-in-paper-based-fluorogenic-optical-sensing-with-smartphones
#19
REVIEW
Tiffany-Heather Ulep, Jeong-Yeol Yoon
Application of optically superior, tunable fluorescent nanotechnologies have long been demonstrated throughout many chemical and biological sensing applications. Combined with microfluidics technologies, i.e. on lab-on-a-chip platforms, such fluorescent nanotechnologies have often enabled extreme sensitivity, sometimes down to single molecule level. Within recent years there has been a peak interest in translating fluorescent nanotechnology onto paper-based platforms for chemical and biological sensing, as a simple, low-cost, disposable alternative to conventional silicone-based microfluidic substrates...
2018: Nano Convergence
https://www.readbyqxmd.com/read/29755211/microfluidic-diatomite-analytical-devices-for-illicit-drug-sensing-with-ppb-level-sensitivity
#20
Xianming Kong, Xinyuan Chong, Kenny Squire, Alan X Wang
The escalating research interests in porous media microfluidics, such as microfluidic paper-based analytical devices, have fostered a new spectrum of biomedical devices for point-of-care (POC) diagnosis and biosensing. In this paper, we report microfluidic diatomite analytical devices (μDADs), which consist of highly porous photonic crystal biosilica channels, as an innovative lab-on-a-chip platform to detect illicit drugs. The μDADs in this work are fabricated by spin-coating and tape-stripping diatomaceous earth on regular glass slides with cross section of 400×30µm2 ...
April 15, 2018: Sensors and Actuators. B, Chemical
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