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https://www.readbyqxmd.com/read/28088011/particulates-and-noise-exposure-during-bicycle-bus-and-car-commuting-a-study-in-three-european-cities
#1
Enembe O Okokon, Tarja Yli-Tuomi, Anu W Turunen, Pekka Taimisto, Arto Pennanen, Ilias Vouitsis, Zissis Samaras, Marita Voogt, Menno Keuken, Timo Lanki
BACKGROUND: In order to curb traffic-related air pollution and its impact on the physical environment, contemporary city commuters are encouraged to shift from private car use to active or public transport modes. However, personal exposures to particulate matter (PM), black carbon and noise during commuting may be substantial. Therefore, studies comparing exposures during recommended modes of transport versus car trips are needed. METHODS: We measured personal exposure to various-sized particulates, soot, and noise during commuting by bicycle, bus and car in three European cities: Helsinki in Finland, Rotterdam in the Netherlands and Thessaloniki in Greece using portable monitoring devices...
January 11, 2017: Environmental Research
https://www.readbyqxmd.com/read/28086889/hybrid-brain-computer-interface-for-biomedical-cyber-physical-system-application-using-wireless-embedded-eeg-systems
#2
Rifai Chai, Ganesh R Naik, Sai Ho Ling, Hung T Nguyen
BACKGROUND: One of the key challenges of the biomedical cyber-physical system is to combine cognitive neuroscience with the integration of physical systems to assist people with disabilities. Electroencephalography (EEG) has been explored as a non-invasive method of providing assistive technology by using brain electrical signals. METHODS: This paper presents a unique prototype of a hybrid brain computer interface (BCI) which senses a combination classification of mental task, steady state visual evoked potential (SSVEP) and eyes closed detection using only two EEG channels...
January 7, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28081502/quantitative-determinations-using-portable-raman-spectroscopy
#3
Chelliah V Navin, Chaitanya Tondepu, Roxana Toth, Latevi S Lawson, Jason D Rodriguez
A portable Raman spectrometer was used to develop chemometric models to determine percent (%) drug release and potency for 500mg ciprofloxacin HCl tablets. Parallel dissolution and chromatographic experiments were conducted alongside Raman experiments to assess and compare the performance and capabilities of portable Raman instruments in determining critical drug attributes. All batches tested passed the 30min dissolution specification and the Raman model for drug release was able to essentially reproduce the dissolution profiles obtained by ultraviolet spectroscopy at 276nm for all five batches of the 500mg ciprofloxacin tablets...
December 30, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28081144/digital-health-tracking-physiomes-and-activity-using-wearable-biosensors-reveals-useful-health-related-information
#4
Xiao Li, Jessilyn Dunn, Denis Salins, Gao Zhou, Wenyu Zhou, Sophia Miryam Schüssler-Fiorenza Rose, Dalia Perelman, Elizabeth Colbert, Ryan Runge, Shannon Rego, Ria Sonecha, Somalee Datta, Tracey McLaughlin, Michael P Snyder
A new wave of portable biosensors allows frequent measurement of health-related physiology. We investigated the use of these devices to monitor human physiological changes during various activities and their role in managing health and diagnosing and analyzing disease. By recording over 250,000 daily measurements for up to 43 individuals, we found personalized circadian differences in physiological parameters, replicating previous physiological findings. Interestingly, we found striking changes in particular environments, such as airline flights (decreased peripheral capillary oxygen saturation [SpO2] and increased radiation exposure)...
January 2017: PLoS Biology
https://www.readbyqxmd.com/read/28079961/highly-porous-thermoelectric-nanocomposites-with-low-thermal-conductivity-and-high-figure-of-merit-from-large-scale-solution-synthesized-bi2-te2-5-se0-5-hollow-nanostructures
#5
Biao Xu, Tianli Feng, Matthias T Agne, Lin Zhou, Xiulin Ruan, G Jeffery Snyder, Yue Wu
To enhance the performance of thermoelectric materials and enable access to their widespread applications, it is beneficial yet challenging to synthesize hollow nanostructures in large quantities, with high porosity, low thermal conductivity (κ) and excellent figure of merit (z T). Herein we report a scalable (ca. 11.0 g per batch) and low-temperature colloidal processing route for Bi2 Te2.5 Se0.5 hollow nanostructures. They are sintered into porous, bulk nanocomposites (phi 10 mm×h 10 mm) with low κ (0...
January 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28078805/three-dimensional-mos2-cnt-rgo-network-composites-for-high-performance-flexible-supercapacitors
#6
Shouzhi Wang, Jiayan Zhu, Yongliang Shao, Weiran Li, Yongzhong Wu, Xiaopeng Hao
Two-dimensional atomically thick materials, reduced graphene oxide (RGO) and layered molybdenum disulphide (MoS2) have been potentially investigated as novel energy storage materials because of their distinct physicochemical properties. However, these materials suffer from rapid capacity decay and low rate capability. This study describes a facile binder-free approach to fabricate large-scale 3D network structure MoS2@carbon nanotube (CNT)/RGO composites for application in flexible supercapacitor devices. The as-obtained composites possess a hierarchical porosity and an interconnected framework...
January 11, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28078772/skin-cleansing-and-emolliating-for-older-people-a-quasi-experimental-pilot-study
#7
Jill Brooks, Fiona Cowdell, Steven J Ersser, Eric D Gardiner
AIMS: The aims of this study were to (i) assess the effect of low-cost hygiene and emollient regimens on the skin barrier function (SBF) of people aged >65 year with xerosis (dry skin) on their lower legs; (ii) to assess the utility of portable measures of skin barrier function in terms of stratum corneum hydration (SCH) and transepidermal water loss (TEWL) in community settings; and iii) to provide evidence for a randomised controlled trial on the treatment of adults in a resource-poor country with dry skin on their lower legs which causes and exacerbates the skin disease podoconiosis (non-filarial elephantiasis)...
January 12, 2017: International Journal of Older People Nursing
https://www.readbyqxmd.com/read/28078412/simultaneous-determination-of-four-food-allergens-using-compact-disc-immunoassaying-technology
#8
Ahmed Ali Badran, Sergi Morais, Ángel Maquieira
A multiplex competitive microimmunoassay for the simultaneous determination of gliadin, casein, β-lactoglobulin, and ovalbumin is presented. The assay in microarray format is performed on a DVD where the allergens are physisorbed on the polycarbonate surface of the disc. The immunointeraction is detected using a mixture of specific gold-labeled antibodies and the signal amplified with the silver enhancement method. The optical density of the precipitate, read by a DVD drive, is related to the concentration of the four allergens in sample...
January 11, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28075342/trunk-motion-system-tms-using-printed-body-worn-sensor-bws-via-data-fusion-approach
#9
Mohammad Iman Mokhlespour Esfahani, Omid Zobeiri, Behzad Moshiri, Roya Narimani, Mohammad Mehravar, Ehsan Rashedi, Mohamad Parnianpour
Human movement analysis is an important part of biomechanics and rehabilitation, for which many measurement systems are introduced. Among these, wearable devices have substantial biomedical applications, primarily since they can be implemented both in indoor and outdoor applications. In this study, a Trunk Motion System (TMS) using printed Body-Worn Sensors (BWS) is designed and developed. TMS can measure three-dimensional (3D) trunk motions, is lightweight, and is a portable and non-invasive system. After the recognition of sensor locations, twelve BWSs were printed on stretchable clothing with the purpose of measuring the 3D trunk movements...
January 8, 2017: Sensors
https://www.readbyqxmd.com/read/28074883/etalon-array-reconstructive-spectrometry
#10
Eric Huang, Qian Ma, Zhaowei Liu
Compact spectrometers are crucial in areas where size and weight may need to be minimized. These types of spectrometers often contain no moving parts, which makes for an instrument that can be highly durable. With the recent proliferation in low-cost and high-resolution cameras, camera-based spectrometry methods have the potential to make portable spectrometers small, ubiquitous, and cheap. Here, we demonstrate a novel method for compact spectrometry that uses an array of etalons to perform spectral encoding, and uses a reconstruction algorithm to recover the incident spectrum...
January 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28071734/a-subwavelength-resolution-microwave-6-3%C3%A2-ghz-camera-based-on-a-metamaterial-absorber
#11
Yunsong Xie, Xin Fan, Yunpeng Chen, Jeffrey D Wilson, Rainee N Simons, John Q Xiao
The design, fabrication and characterization of a novel metamaterial absorber based camera with subwavelength spatial resolution are investigated. The proposed camera is featured with simple and lightweight design, easy portability, low cost, high resolution and sensitivity, and minimal image interference or distortion to the original field distribution. The imaging capability of the proposed camera was characterized in both near field and far field ranges. The experimental and simulated near field images both reveal that the camera produces qualitatively accurate images with negligible distortion to the original field distribution...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070457/the-concurrent-validity-and-reliability-of-the-leg-motion-system-for-measuring-ankle-dorsiflexion-range-of-motion-in-older-adults
#12
Carlos Romero Morales, César Calvo Lobo, David Rodríguez Sanz, Irene Sanz Corbalán, Beatriz Ruiz Ruiz, Daniel López López
BACKGROUND: New reliable devices for range of motion (ROM) measures in older adults are necessary to improve knowledge about the functional capability in this population. Dorsiflexion ROM limitation is associated with ankle injuries, foot pain, lower limb disorders, loss of balance, gait control disorders and fall risk in older adults. The aim of the present study was to assess the validity and reliability of the Leg Motion device for measuring ankle dorsiflexion ROM in older adults. METHODS: Adescriptive repeated-measures study was designed to test the reliability of Leg Motion in thirty-three healthy elderly patients older than 65 years...
2017: PeerJ
https://www.readbyqxmd.com/read/28070020/galvanic-displacement-assembly-of-ultrathin-co3o4-nanosheet-arrays-on-nickel-foam-for-high-performance-supercapacitor
#13
Yuxiu You, Maojun Zheng, Liguo Ma, Xiaoliang Yuan, Bin Zhang, Qiang Li, Faze Wang, Jingnan Song, Dongkai Jiang, Pengjie Liu, Li Ma, Wenzhong Shen
Supercapacitors with high performance are highly desired for many portable electronic devices, electric vehicles and high power electronic devices. Herein, a facile and binder-free synthesis method, galvanic displacement of the precursor followed by heat treatment, is used to fabricate ultrathin Co3O4 nanosheet arrays on nickel foam substrate. The prepared Co3O4 on nickel foam used as a supercapacitor electrode exhibits maximum specific capacitance of 1095 F g-1 at the current density of 1 A g-1 and good cycling stability of 71% retention after 2000 cycling tests...
January 10, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28067861/phylis-a-low-cost-portable-visible-range-spectrometer-for-soil-and-plants
#14
Matt J Aitkenhead, Graham J Gaskin, Noemie Lafouge, Cathy Hawes
Monitoring soil and crop condition is vital for the sustainable management of agricultural systems. Often, land management decision-making requires rapid assessment of conditions, which is difficult if samples need to be taken and sent elsewhere for analysis. In recent years, advances in field-based spectroscopy have led to improvements in real-time monitoring; however, the cost of equipment and user training still makes it inaccessible for most land managers. At the James Hutton Institute, we have developed a low-cost visible wavelength hyperspectral device intended to provide rapid field-based assessment of soil and plant conditions...
January 7, 2017: Sensors
https://www.readbyqxmd.com/read/28067278/development-of-a-recombinase-polymerase-amplification-assay-for-detection-of-epidemic-human-noroviruses
#15
Matthew D Moore, Lee-Ann Jaykus
Human norovirus is a leading cause of viral gastroenteritis worldwide. Rapid detection could facilitate control, however widespread point-of-care testing is infrequently done due to the lack of robust and portable methods. Recombinase polymerase amplification (RPA) is a novel isothermal method which rapidly amplifies and detects nucleic acids using a simple device in near real-time. An RT-RPA assay targeting a recent epidemic human norovirus strain (GII.4 New Orleans) was developed and evaluated in this study...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28063601/bone-marrow-fat-content-is-correlated-with-hepatic-fat-content-in-paediatric-non-alcoholic-fatty-liver-disease
#16
N Y Yu, T Wolfson, M S Middleton, G Hamilton, A Gamst, J E Angeles, J B Schwimmer, C B Sirlin
AIM: To investigate the relationship between bone marrow fat content and hepatic fat content in children with known or suspected non-alcoholic fatty liver disease (NAFLD). MATERIALS AND METHODS: This was an institutional review board-approved, Health Insurance Portability and Accountability Act (HIPAA)-compliant, cross-sectional, prospective analysis of data collected between October 2010 to March 2013 in 125 children with known or suspected NAFLD. Written informed consent was obtained for same-day research magnetic resonance imaging (MRI) of the lumbar spine, liver, and abdominal adiposity...
January 4, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28062089/structured-reporting-of-magnetic-resonance-enterography-for-pediatric-crohn-s-disease-effect-on-key-feature-reporting-and-subjective-assessment-of-disease-by-referring-physicians
#17
Benjamin Wildman-Tobriner, Brian C Allen, Joseph T Davis, Chad M Miller, Gary R Schooler, Nancy M McGreal, Reinaldo Quevedo, Julie K Thacker, Tracy A Jaffe
PURPOSE: To objectively compare the content of structured reports (SR) vs nonstructured reports (NSR) for magnetic resonance enterography (MRE) of pediatric patients with Crohn's disease, and to evaluate referring clinicians' subjective assessment of reports. METHODS: This institutional review board-approved, Health Insurance Portability and Accountability Act-compliant retrospective study included 25 pediatric subjects (15 male, 10 female; mean age = 14 years [range: 9-18 years]) with Crohn's disease imaged with MRE...
December 5, 2016: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/28060775/customized-portable-neutron-activation-analysis-system-to-quantify-manganese-mn-in-bone-in-vivo
#18
Yingzi Liu, Farshad Mostafaei, Daniel Sowers, Ming-Jung Hsieh, Wei Zheng, Linda Nie
In the US alone, millions of workers, including over 300,000 welders, are at high risk of occupational manganese (Mn) exposure. Those who have been chronically exposed to excessive amount of Mn can develop severe neurological disorders similar, but not identical, to the idiopathic Parkinson's disease. One challenge to identify the health effects of Mn exposure is to find a reliable biomarker for exposure assessment, especially for long-term cumulative exposure. Mn's long biological half-life as well as its relatively high concentration in bone makes bone Mn (BnMn) a potentially valuable biomarker for Mn exposure...
January 6, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28060306/implementation-of-portable-emissions-measurement-systems-pems-for-the-real-driving-emissions-rde-regulation-in-europe
#19
Barouch Giechaskiel, Theodoros Vlachos, Francesco Riccobono, Fausto Forni, Rinaldo Colombo, Francois Montigny, Philippe Le-Lijour, Massimo Carriero, Pierre Bonnel, Martin Weiss
Vehicles are tested in controlled and relatively narrow laboratory conditions to determine their official emission values and reference fuel consumption. However, on the road, ambient and driving conditions can vary over a wide range, sometimes causing emissions to be higher than those measured in the laboratory. For this reason, the European Commission has developed a complementary Real-Driving Emissions (RDE) test procedure using the Portable Emissions Measurement Systems (PEMS) to verify gaseous pollutant and particle number emissions during a wide range of normal operating conditions on the road...
December 4, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28060280/a-protocol-of-manual-tests-to-measure-sensation-and-pain-in-humans
#20
Matthew Kostek, Anna Polaski, Benedict Kolber, Austin Ramsey, Alexander Kranjec, Kimberly Szucs
Numerous qualitative and quantitative techniques can be used to test sensory nerves and pain in both research and clinical settings. The current study demonstrates a quantitative sensory testing protocol using techniques to measure tactile sensation and pain threshold for pressure and heat using portable and easily accessed equipment. These techniques and equipment are ideal for new laboratories and clinics where cost is a concern or a limiting factor. We demonstrate measurement techniques for the following: cutaneous mechanical sensitivity on the arms and legs (von-Frey filaments), radiant and contact heat sensitivity (with both threshold and qualitative assessments using the Visual Analog Scale (VAS)), and mechanical pressure sensitivity (algometer, with both threshold and the VAS)...
December 19, 2016: Journal of Visualized Experiments: JoVE
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