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https://www.readbyqxmd.com/read/29165553/solvent-transfer-efficiency-of-risk-management-measures
#1
Katharina Bluemlein, Manfred Elend, Tim Meijster, Alison Margary, Rosalie Tibaldi, Stefan Hahn, Susanne Hesse
A series of laboratory simulations were conducted in order to determine the airborne protection that might be afforded by different combinations of workplace exposure controls typically encountered when handling volatile solvents (e.g. solvent transfer). These conditions, referred to as risk management measures (RMMs) under the Registration, Evaluation and Authorisation of Chemicals Regulation (REACH), are typically described using standard phrases in safety data sheets [and specifically those of the European Phrase Catalogue (EUPhraC)]...
November 19, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29165103/occupation-exposed-to-road-traffic-emissions-and-respiratory-health-among-congolese-transit-workers-particularly-bus-conductors-in-kinshasa-a-cross-sectional-study
#2
Etongola Papy Mbelambela, Ryoji Hirota, Masamitsu Eitoku, Sifa Marie Joelle Muchanga, Hidenori Kiyosawa, Kahoko Yasumitsu-Lovell, Ontshick Leader Lawanga, Narufumi Suganuma
OBJECTIVES: Road-traffic emissions (RTE) induce adverse health effects, notably respiratory symptoms and respiratory diseases, as a result of pollutants deposited into the respiratory tract. The aim of this study was to evaluate the association between occupation groups of Congolese transit workers exposed to RTE, particularly bus conductors and respiratory health, in Kinshasa. METHODS: A cross-sectional study was conducted from 2015 April 20(th) to May 14(th), whose participants were bus conductors (n = 110), bus drivers (n = 107), taxi-motorcyclists (n = 102) and high school teachers (control group; n = 106)...
March 20, 2017: Environmental Health and Preventive Medicine
https://www.readbyqxmd.com/read/29161389/innovations-in-management-of-cardiac-disease-drugs-treatment-strategies-and-technology
#3
P Foëx
Within the last generation, the management of patients with heart disease has been transformed by advances in drug treatments, interventions and diagnostic technologies. The management of arterial hypertension saw beta-blockers demoted from first- to third-line treatment. Recent studies suggest that the goal of treatment may have to change to lower systolic blood pressures to prevent long-term organ damage. Today less than 15% of coronary revascularizations are surgical and more than 85% are done by interventional cardiologists inserting coronary stents...
December 1, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/29156597/different-ways-to-apply-a-measurement-instrument-of-e-nose-type-to-evaluate-ambient-air-quality-with-respect-to-odour-nuisance-in-a-vicinity-of-municipal-processing-plants
#4
REVIEW
Bartosz Szulczyński, Tomasz Wasilewski, Wojciech Wojnowski, Tomasz Majchrzak, Tomasz Dymerski, Jacek Namieśnik, Jacek Gębicki
This review paper presents different ways to apply a measurement instrument of e-nose type to evaluate ambient air with respect to detection of the odorants characterized by unpleasant odour in a vicinity of municipal processing plants. An emphasis was put on the following applications of the electronic nose instruments: monitoring networks, remote controlled robots and drones as well as portable devices. Moreover, this paper presents commercially available sensors utilized in the electronic noses and characterized by the limit of quantification below 1 ppm v/v, which is close to the odour threshold of some odorants...
November 19, 2017: Sensors
https://www.readbyqxmd.com/read/29155778/a-detailed-protocol-for-physiological-parameters-acquisition-and-analysis-in-neurosurgical-critical-patients
#5
Xiang Wu, Guoyi Gao, Junfeng Feng, Qing Mao, Jiyao Jiang
Intracranial pressure (ICP) monitoring is now widely used in neurosurgical critical patients. Besides mean ICP value, the ICP derived parameters such as ICP waveform, amplitude of pulse (AMP), the correlation of ICP amplitude and ICP mean (RAP), pressure reactivity index (PRx), ICP and arterial blood pressure (ABP) wave amplitude correlation (IAAC), and so on, can reflect intracranial status, predict prognosis, and can also be used as guidance of proper treatment. However, most of the clinicians focus only on the mean ICP value while ignoring these parameters because of the limitations of the current devices...
October 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155767/a-wireless-bidirectional-interface-for-in-vivo-recording-and-stimulation-of-neural-activity-in-freely-behaving-rats
#6
Liana Melo-Thomas, K-Alexander Engelhardt, Uwe Thomas, Dirk Hoehl, Sascha Thomas, Markus Wöhr, Bjoern Werner, Frank Bremmer, Rainer K W Schwarting
In vivo electrophysiology is a powerful technique to investigate the relationship between brain activity and behavior at a millisecond and micrometer scale. However, current methods mostly rely on tethered cable recordings or only use unidirectional systems, allowing either recording or stimulation of neural activity, but not at the same time or same target. Here, a new wireless, bidirectional device for simultaneous multichannel recording and stimulation of neural activity in freely behaving rats is described...
November 7, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29154695/an-evaluation-of-portable-wet-bulb-globe-temperature-monitor-accuracy
#7
Earl Cooper, Andrew Grundstein, Adam Rosen, Jessica Miles, Jupil Ko, Patrick Curry
CONTEXT:   Wet bulb globe temperature (WBGT) is the gold standard for assessing environmental heat stress during physical activity. Many manufacturers of commercially available instruments fail to report WBGT accuracy. OBJECTIVE:   To determine the accuracy of several commercially available WBGT monitors compared with a standardized reference device. DESIGN:   Observational study. SETTING:   Field test. PATIENTS OR OTHER PARTICIPANTS:   Six commercially available WBGT devices...
November 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29152658/hepatic-differentiation-of-mouse-bone-marrow%C3%A2-derived-mesenchymal-stem-cells-using-a-novel-3d-culture-system
#8
Qiong Wu, Jing Tang, Yi Li, Li Li, Yujia Wang, Ji Bao, Hong Bu
The development of novel culture systems that mimic the in vivo microenvironment may be beneficial for inducing the differentiation of stem cells and promoting liver function. In the present study, spheroid cultures and decellularized liver scaffolds (DLSs) were utilized to obtain differentiated hepatocyte‑like cells. Mouse bone marrow (BM)‑derived mesenchymal stem cells (MSCs) self‑aggregated into spheroids under low‑attachment conditions and implanted into the DLSs via a negative pressure suction device...
October 19, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29145052/a-comparison-of-personal-exposure-to-air-pollutants-in-different-travel-modes-on-national-highways-in-india
#9
Soma Sekhara Rao Kolluru, Aditya Kumar Patra, Satya Prakash Sahu
People often travel a long distance on highways to the nearest city for professional/business activities. However, relatively few publications on passenger exposure to pollutants on highways in India or elsewhere are available. The aim of this study was to examine the contribution of different travel modes to passengers' pollutant exposure for a long distance travel on a national highway in India. We measured PM2.5 and CO exposure levels of the passengers over 200km on a national highway using two portable air monitors, EVM-7 and EPAM-5000...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29141750/use-of-a-novel-portable-three-dimensional-scanner-to-measure-limb-volume-and-circumference-in-patients-with-filarial-lymphedema
#10
Channa Yahathugoda, Michael J Weiler, Ramakrishna Rao, Lalindi De Silva, J Brandon Dixon, Mirani V Weerasooriya, Gary J Weil, Philip J Budge
The World Health Organization's Global Program to Eliminate Lymphatic Filariasis (LF) has reduced LF transmission worldwide, but millions remain affected by filarial lymphedema. Tools for clinically monitoring lymphedema in developing nations are limited. We tested a novel, portable, infrared three-dimensional (3D) scanner against water displacement (WD) and tape measurement of limb circumference (TMLC) among patients with filarial leg lymphedema in Galle, Sri Lanka. Outcomes were accuracy and reproducibility of scanner measurements...
October 16, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29140615/operator-exposure-to-hydrogen-sulfide-from-dairy-manure-storages-containing-gypsum-bedding
#11
Eileen E Fabian-Wheeler, Michael L Hile, Dennis J Murphy, Davis E Hill, Robert Meinen, Robin C Brandt, Hershel A Elliott, Daniel Hofstetter
Dairy manure storages containing gypsum-based bedding have been linked anecdotally with injury and death due to presumed dangerous levels of gases released. Recycled gypsum products are used as a cost-effective bedding alternative to improve animal welfare and provide agronomic benefits to manure recycled back to the land. Sulfur contained in gypsum (calcium sulfate) can contribute to hydrogen sulfide (H2S) gas formation under the anaerobic storage conditions typical of dairy manure slurry. Disturbance of stored manure during agitation releases a burst of volatile gases...
January 26, 2017: Journal of Agricultural Safety and Health
https://www.readbyqxmd.com/read/29140309/biosensors-to-diagnose-chagas-disease-a-brief-review
#12
REVIEW
María-Isabel Rocha-Gaso, Luis-Jesús Villarreal-Gómez, Denis Beyssen, Frédéric Sarry, Marco-Antonio Reyna, Carlos-Napoleón Ibarra-Cerdeña
Chagas disease (CD), which mostly affects those living in deprived areas, has become one of Latin America's main public health problems. Effective prevention of the disease requires early diagnosis, initiation of therapy, and regular blood monitoring of the infected individual. However, the majority of the Trypanosoma cruzi infections go undiagnosed because of mild symptoms, limited access to medical attention and to a high variability in the sensitivity and specificity of diagnostic tests. Consequently, more affordable and accessible detection technologies capable of providing early diagnosis and T...
November 15, 2017: Sensors
https://www.readbyqxmd.com/read/29136875/a-turn-on-competitive-immunochromatographic-strips-integrated-with-quantum-dots-and-gold-nano-stars-for-cadmium-ion-detection
#13
Meng Xiao, Qiangqiang Fu, Haicong Shen, Yuan Chen, Wei Xiao, Daoguang Yan, Xiaojiang Tang, Zhiyong Zhong, Yong Tang
Immunochromatographic strips (ICSs) are inexpensive, simple, portable, and robust, and therefore have many uses in the medicinal, agricultural, and environmental industries. For detection of small molecules, current ICSs are competitive format (competitive ICSs, CICSs), which only offer a turn-off readout mode, and therefore lead to low sensitivity when evaluating results by the naked eye. To overcome this problem, we report a turn-on CICSs that relies on the ability of gold nano-stars (AuNSs) quenching the signal of quantum dots (QDs)...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29134807/a-high-time-resolution-optical-sensor-for-monitoring-atmospheric-nitrogen-dioxide
#14
Yong Tian, Xiaomin Zhang, Hui-Yan Shen, Aifeng Liu, Zongshan Zhao, Ming-Li Chen, Xuwei Chen
High-time resolution monitoring nitrogen dioxide (NO2) is of great importance for studying the formation mechanism of aerosol and improving air quality. Based on the Griess-Saltzman (GS) reaction, a portable NO2 optical sensor was developed by employing a porous polypropylene membrane tube (PPMT) integrated gas permeation collector and detector. The PPMT was filled with GS reagents and covered with a coaxial jacket tube for gas collection. Its two ends were respectively fixed with a yellowish green light emitting diode and a photodiode for optic signal reception...
November 14, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/29130305/tuning-the-sensing-performance-of-multilayer-plasmonic-core-satellite-assemblies-for-rapid-detection-of-targets-from-lysed-cells
#15
Nguyen Hoang Le, Bach Kim Nguyen, Gang Ye, Chun Peng, Jennifer I L Chen
Optical sensors based on discrete plasmonic nanostructures are invaluable for probing biomolecular interactions when applied as plasmonic rulers or reconfigurable multinanoparticle assemblies. However, their adaptation as a versatile sensing platform is limited by the research-grade instrumentation required for single-nanostructure imaging and/or spectroscopy and complex data fitting and analysis. Additionally, the dynamic range is often too narrow for the quantitative analysis of targets of interest in biodiagnostics, food safety, or environmental monitoring...
November 15, 2017: ACS Sensors
https://www.readbyqxmd.com/read/29129870/portable-microplate-analyzer-with-a-thermostatic-chamber-based-on-a-smartphone-for-on-site-rapid-detection
#16
Zijian Wan, Longjie Zhong, Yuxiang Pan, Hongbo Li, Quchao Zou, Kaiqi Su, Ping Wang
A microplate method provides an efficient way to use modern detection technology. However, there are some difficulties concerning on-site detection, such as being non-portable and time-consuming. In this work, a novel portable microplate analyzer with a thermostatic chamber based on a smartphone was designed for rapid on-site detection. An analyzer with a wide-angle lens and an optical filter provides a proper environment for the microplate. A smartphone app-iPlate Monitor was used for RGB analyze of image...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
https://www.readbyqxmd.com/read/29125586/an-investigation-into-spike-based-neuromorphic-approaches-for-artificial-olfactory-systems
#17
REVIEW
Anup Vanarse, Adam Osseiran, Alexander Rassau
The implementation of neuromorphic methods has delivered promising results for vision and auditory sensors. These methods focus on mimicking the neuro-biological architecture to generate and process spike-based information with minimal power consumption. With increasing interest in developing low-power and robust chemical sensors, the application of neuromorphic engineering concepts for electronic noses has provided an impetus for research focusing on improving these instruments. While conventional e-noses apply computationally expensive and power-consuming data-processing strategies, neuromorphic olfactory sensors implement the biological olfaction principles found in humans and insects to simplify the handling of multivariate sensory data by generating and processing spike-based information...
November 10, 2017: Sensors
https://www.readbyqxmd.com/read/29121101/validation-of-a-light-scattering-pm2-5-sensor-monitor-based-on-the-long-term-gravimetric-measurements-in-field-tests
#18
Jingjin Shi, Fei'er Chen, Yunfei Cai, Shichen Fan, Jing Cai, Renjie Chen, Haidong Kan, Yihan Lu, Zhuohui Zhao
BACKGROUND: Portable direct-reading instruments by light-scattering method are increasingly used in airborne fine particulate matter (PM2.5) monitoring. However, there are limited calibration studies on such instruments by applying the gravimetric method as reference method in field tests. METHODS: An 8-month sampling was performed and 96 pairs of PM2.5 data by both the gravimetric method and the simultaneous light-scattering real-time monitoring (QT-50) were obtained from July, 2015 to February, 2016 in Shanghai...
2017: PloS One
https://www.readbyqxmd.com/read/29120465/resonance-raman-detection-of-antioxidants-using-an-iron-oxide-nanoparticle-catalysed-decolourisation-assay
#19
Sian Sloan-Dennison, Neil C Shand, Duncan Graham, Karen Faulds
Nanozymes are metal nanoparticles with catalytic properties that can be used to oxidise peroxidase substrates giving a colorimetric response which can be detected using UV-vis, and recently, Raman spectroscopy. Due to their ease of synthesis and increased stability, nanozymes are being increasing investigated to replace conventional enzymes for the detection of biomolecules. Here we exploit the catalytic activity of iron oxide (Fe2O3) nanoparticles combined with the substrate 2,2-azinobis(3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) in a decolourisation assay for the detection of antioxidants...
November 9, 2017: Analyst
https://www.readbyqxmd.com/read/29114238/long-term-monitoring-gait-analysis-using-a-wearable-device-in-daily-lives-of-patients-with-parkinson-s-disease-the-efficacy-of-selegiline-hydrochloride-for-gait-disturbance
#20
Mutsumi Iijima, Hiroshi Mitoma, Shinichiro Uchiyama, Kazuo Kitagawa
Objective: The aim of this study was to assess quantitatively the gait disorders in the daily lives of patients with Parkinson's disease (PD) using with a newly developed portable gait rhythmogram (PGR), which has a trunk-mounted acceleration sensor and automatic gait-detection algorithm. Methods: Using the PGR, we recorded the daily walking profiles of 14 PD patients before and after the addition or increase in dose of an MAO-B inhibitor (selegiline, average dose: 4...
2017: Frontiers in Neurology
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