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https://www.readbyqxmd.com/read/27924243/comparison-of-real-time-nanoparticle-monitoring-instruments-in-the-workplaces
#1
Seunghon Ham, Naroo Lee, Igchun Eom, Byoungcheun Lee, Perng-Jy Tsai, Kiyoung Lee, Chungsik Yoon
BACKGROUND: Relationships among portable scanning mobility particle sizer (P-SMPS), condensation particle counter (CPC), and surface area monitor (SAM), which are different metric measurement devices, were investigated, and two widely used research grade (RG)-SMPSs were compared to harmonize the measurement protocols. METHODS: Pearson correlation analysis was performed to compare the relation between P-SMPS, CPC, and SAM and two common RG-SMPS. RESULTS: For laboratory and engineered nanoparticle (ENP) workplaces, correlation among devices showed good relationships...
December 2016: Safety and Health At Work
https://www.readbyqxmd.com/read/27922660/combined-vision-and-wearable-sensors-based-system-for-movement-analysis-in-rehabilitation
#2
Sofija Spasojević, Tihomir V Ilić, Slađan Milanović, Veljko Potkonjak, Aleksandar Rodić, José Santos-Victor
BACKGROUND: Traditional rehabilitation sessions are often a slow, tedious, disempowering and non-motivational process, supported by clinical assessment tools, i.e. evaluation scales that are prone to subjective rating and imprecise interpretation of patient's performance. Poor patient motivation and insufficient accuracy are thus critical factors that can be improved by new sensing / processing technologies. OBJECTIVES: We aim to develop a portable and affordable system, suitable for home rehabilitation, which combines vision-based and wearable sensors...
December 6, 2016: Methods of Information in Medicine
https://www.readbyqxmd.com/read/27919588/diagnostic-accuracy-of-the-berlin-questionnaire-stop-bang-stop-and-epworth-sleepiness-scale-in-detecting-obstructive-sleep-apnea-a-bivariate-meta-analysis
#3
REVIEW
Hsiao-Yean Chiu, Pin-Yuan Chen, Li-Pang Chuang, Ning-Hung Chen, Yu-Kang Tu, Yu-Jung Hsieh, Yu-Chi Wang, Christian Guilleminault
Obstructive sleep apnea (OSA) is a highly prevalent sleep disorder; however, it remains underdiagnosed and undertreated. Although screening tools such as the Berlin questionnaire (BQ), STOP-BANG questionnaire (SBQ), STOP questionnaire (STOP), and Epworth sleepiness scale (ESS) are widely used for OSA, the findings regarding their diagnostic accuracy are controversial. Therefore, this meta-analysis investigated and compared the summary sensitivity, specificity, and diagnostic odds ratio (DOR) among the BQ, SBQ, STOP, and ESS according to the severity of OSA...
November 5, 2016: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/27918484/a-novel-wireless-wearable-volatile-organic-compound-voc-monitoring-device-with-disposable-sensors
#4
Yue Deng, Cheng Chen, Xiaojun Xian, Francis Tsow, Gaurav Verma, Rob McConnell, Scott Fruin, Nongjian Tao, Erica S Forzani
A novel portable wireless volatile organic compound (VOC) monitoring device with disposable sensors is presented. The device is miniaturized, light, easy-to-use, and cost-effective. Different field tests have been carried out to identify the operational, analytical, and functional performance of the device and its sensors. The device was compared to a commercial photo-ionization detector, gas chromatography-mass spectrometry, and carbon monoxide detector. In addition, environmental operational conditions, such as barometric change, temperature change and wind conditions were also tested to evaluate the device performance...
December 3, 2016: Sensors
https://www.readbyqxmd.com/read/27916877/short-range-vital-signs-sensing-based-on-eemd-and-cwt-using-ir-uwb-radar
#5
Xikun Hu, Tian Jin
The radar sensor described realizes healthcare monitoring capable of detecting subject chest-wall movement caused by cardiopulmonary activities and wirelessly estimating the respiration and heartbeat rates of the subject without attaching any devices to the body. Conventional single-tone Doppler radar can only capture Doppler signatures because of a lack of bandwidth information with noncontact sensors. In contrast, we take full advantage of impulse radio ultra-wideband (IR-UWB) radar to achieve low power consumption and convenient portability, with a flexible detection range and desirable accuracy...
November 30, 2016: Sensors
https://www.readbyqxmd.com/read/27913972/in-hospital-diagnosis-of-sleep-apnea-in-stroke-patients-using-a-portable-acoustic-device
#6
Clodagh M Ryan, Kelly Wilton, T Douglas Bradley, Hisham Alshaer
PURPOSE: Sleep apnea (SA) is highly prevalent in post-stroke patients. Due to physical disability and relative inaccessibility of polysomnography (PSG) to test for SA, patients with stroke frequently remain undiagnosed and untreated. Portable SA monitoring can facilitate at-home or in-hospital testing for SA. However, portable SA monitoring is not recommended in those with complex medical conditions, such as stroke, due to the lack of validation of portable monitoring in such patients...
December 2, 2016: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/27910861/paper-based-crp-monitoring-devices
#7
Shang-Chi Lin, Chung-Yuh Tseng, Po-Liang Lai, Min-Yen Hsu, Shueh-Yao Chu, Fan-Gang Tseng, Chao-Min Cheng
Here, we discuss the development of a paper-based diagnostic device that is inexpensive, portable, easy-to-use, robust, and capable of running simultaneous tests to monitor a relevant inflammatory protein for clinical diagnoses i.e. C-reactive protein (CRP). In this study, we first attempted to make a paper-based diagnostic device via the wax printing method, a process that was used in previous studies. This device has two distinct advantages: 1) reduced manufacturing and assay costs and operation duration via using wax printing method to define hydrophobic boundaries (for fluidic devices or general POC devices); and, 2) the hydrophilicity of filter paper, which is used to purify and chromatographically correct interference caused by whole blood components with a tiny amount of blood sample (only 5 μL)...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910681/tokamak-independent-software-analysis-suite-for-multi-spectral-line-polarization-mse-diagnostics
#8
S D Scott, R T Mumgaard
A tokamak-independent analysis suite has been developed to process data from Motional Stark Effect (mse) diagnostics. The software supports multi-spectral line-polarization mse diagnostics which simultaneously measure emission at the mse σ and π lines as well as at two "background" wavelengths that are displaced from the mse spectrum by a few nanometers. This analysis accurately estimates the amplitude of partially polarized background light at the σ and π wavelengths even in situations where the background light changes rapidly in time and space, a distinct improvement over traditional "time-interpolation" background estimation...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27903493/cancer-detection-in-human-tissue-samples-using-a-fiber-tip-ph-probe
#9
Erik P Schartner, Matthew R Henderson, Malcolm Purdey, Deepak Dhatrak, Tanya M Monro, P Grantley Gill, David F Callen
Intraoperative detection of tumorous tissue is an important unresolved issue for cancer surgery. Difficulty in differentiating between tissue types commonly results in the requirement for additional surgeries to excise unremoved cancer tissue or alternatively in the removal of excess amounts of healthy tissue. Although pathologic methods exist to determine tissue type during surgery, these methods can compromise postoperative pathology, have a lag of minutes to hours before the surgeon receives the results of the tissue analysis, and are restricted to excised tissue...
December 1, 2016: Cancer Research
https://www.readbyqxmd.com/read/27898913/benefits-of-including-methane-measurements-in-selection-strategies
#10
D L Robinson, V H Oddy
Estimates of genetic/phenotypic covariances and economic values for slaughter weight, growth, feed intake and efficiency, and three potential methane traits were compiled to explore the effect of incorporating methane measurements in breeding objectives for cattle and meat sheep. The cost of methane emissions was assumed to be zero (scenario A), A$476/t (based on A$14/t CO equivalent and methane's 100-yr global warming potential [GWP] of 34; scenario B), or A$2,580/t (A$30/t CO equivalent combined with methane's 20-yr GWP of 86; scenario C)...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27897197/on-site-rapid-diagnosis-of-intracranial-hematoma-using-portable-multi-slice-microwave-imaging-system
#11
Ahmed Toaha Mobashsher, A M Abbosh
Rapid, on-the-spot diagnostic and monitoring systems are vital for the survival of patients with intracranial hematoma, as their conditions drastically deteriorate with time. To address the limited accessibility, high costs and static structure of currently used MRI and CT scanners, a portable non-invasive multi-slice microwave imaging system is presented for accurate 3D localization of hematoma inside human head. This diagnostic system provides fast data acquisition and imaging compared to the existing systems by means of a compact array of low-profile, unidirectional antennas with wideband operation...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27897140/agins2-quantum-dots-for-the-detection-of-trinitrotoluene
#12
Alfred J Baca, Heather A Meylemans, Lawrence Baldwin, Lee R Cambrea, Ji Feng, Yadong Yin, M Joseph Roberts
AgInS2 (AIS) quantum dots (QDs) were synthesized via a thermal decomposition reaction with dodecylamine as the ligand to help stabilize the QDs. This reaction procedure is relatively easy to implement, scalable to large batches (up to hundreds of milligrams of QDs are produced), and a convenient method for the synthesis of chalcogenide QDs. Metal powders of AgNO3 and In(NO3)3, were used as the metal precursors while diethyldithiocarbamate was used as the sulfur source. The AIS QDs were characterized via transmission electron microscopy, atomic force microscopy, and energy dispersive x-ray spectroscopy...
January 6, 2017: Nanotechnology
https://www.readbyqxmd.com/read/27896610/limited-awareness-of-the-essences-of-certification-or-compliance-markings-on-medical-devices
#13
REVIEW
Jong Yong Abdiel Foo, Xin Ji Alan Tan
Medical devices have been long used for odiagnostic, therapeutic or rehabilitation purposes. Currently, they can range from a low-cost portable device that is often used for personal health monitoring to high-end sophisticated equipment that can only be operated by trained professionals. Depending on the functional purposes, there are different certification or compliance markings on the device when it is sold. One common certification marking is the Conformité Européenne affixation but this has a range of certification mark numbering for a variety of functional purposes...
November 28, 2016: Science and Engineering Ethics
https://www.readbyqxmd.com/read/27893566/validity-and-reliability-of-a-portable-balance-tracking-system-btracks-in-older-adults
#14
Susan S Levy, Katie J Thralls, Shiloah A Kviatkovsky
BACKGROUND AND PURPOSE: Falls are the leading cause of disability, injury, hospital admission, and injury-related death among older adults. Balance limitations have consistently been identified as predictors of falls and increased fall risk. Field measures of balance are limited by issues of subjectivity, ceiling effects, and low sensitivity to change. The gold standard for measuring balance is the force plate; however, its field use is untenable due to high cost and lack of portability...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27893564/instrumented-test-of-sensory-integration-for-balance-a-validation-study
#15
Lynn Freeman, Geetanjali Gera, Fay B Horak, Mary T Blackinton, Mark Besch, Laurie King
BACKGROUND AND PURPOSE: Abnormal postural sway is associated with an increase in risk of falls but is difficult for clinicians to accurately quantify without access to laboratory equipment. Instrumenting clinical outcome measures using body-worn movement monitors is a low-cost alternative. This is the first study to compare the modified Clinical Test of Sensory Integration for Balance (i-mCTSIB) to the laboratory test of the Sensory Organization Test (SOT) with dynamic posturography in a group of participants with Parkinson's disease (PD) and subtle balance limitations...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27888794/custom-fpga-processing-for-real-time-fetal-ecg-extraction-and-identification
#16
E Torti, D Koliopoulos, M Matraxia, G Danese, F Leporati
Monitoring the fetal cardiac activity during pregnancy is of crucial importance for evaluating fetus health. However, there is a lack of automatic and reliable methods for Fetal ECG (FECG) monitoring that can perform this elaboration in real-time. In this paper, we present a hardware architecture, implemented on the Altera Stratix V FPGA, capable of separating the FECG from the maternal ECG and to correctly identify it. We evaluated our system using both synthetic and real tracks acquired from patients beyond the 20th pregnancy week...
November 17, 2016: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/27886604/a-low-cost-and-palm-size-analyzer-for-rapid-and-sensitive-protein-detection-by-ac-electrokinetics-capacitive-sensing
#17
Xiaozhu Liu, Cheng Cheng, Jayne Wu, Shigetoshi Eda, Yongcai Guo
Specific detection of protein biomarkers has a wide range of applications in areas such as medical science, diagnostics, and pharmacology. Quantitative detection of protein biomarkers in biological media, such as serum, is critically important in detecting disease or physiological malfunction, or tracking disease progression. Among various detection methods, electrical detection is particularly well suited for point-of-care (POC) specific protein detection, being of low cost, light weight and small form factor...
November 11, 2016: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/27886528/neighborhood-social-stressors-fine-particulate-matter-air-pollution-and-cognitive-function-among-older-u-s-adults
#18
Jennifer Ailshire, Amelia Karraker, Philippa Clarke
A growing number of studies have found a link between outdoor air pollution and cognitive function among older adults. Psychosocial stress is considered an important factor determining differential susceptibility to environmental hazards and older adults living in stressful neighborhoods may be particularly vulnerable to the adverse health effects of exposure to hazards such as air pollution. The objective of this study is to determine if neighborhood social stress amplifies the association between fine particulate matter air pollution (PM2...
November 14, 2016: Social Science & Medicine
https://www.readbyqxmd.com/read/27885075/suitability-of-portable-radionuclide-identifiers-for-emergency-incorporation-monitoring
#19
Roman Galeev, Gernot Butterweck, Markus Boschung, Bénédicte Hofstetter-Boillat, Eike Hohmann, Sabine Mayer
The suitability of portable nuclide inspectors for incorporation measurements were tested with three probes (LaBr3(Ce), NaI(Tl) and HPGe) differing in sensitive volume and energy resolution. The efficiencies for the measurement of whole-body and lung radionuclide burden were calibrated using a whole-body block phantom with traceable radionuclide sources of (60)Co, (133)Ba, (137)Cs, (152)Eu and (40)K. A standing geometry was chosen as it allows rapid positioning of persons for the measurements. Decision and detection limits were determined for the unshielded detector in a normal laboratory radiation environment according to ISO 11929 for (134)Cs, (137)Cs and (60)Co...
November 24, 2016: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/27876391/critical-evaluation-of-monitoring-strategy-for-the-multi-residue-determination-of-90-chiral-and-achiral-micropollutants-in-effluent-wastewater
#20
Bruce Petrie, Kathryn Proctor, Jane Youdan, Ruth Barden, Barbara Kasprzyk-Hordern
It is essential to monitor the release of organic micropollutants from wastewater treatment plants (WWTPs) for developing environmental risk assessment and assessing compliance with legislative regulation. In this study the impact of sampling strategy on the quantitative determination of micropollutants in effluent wastewater was investigated. An extended list of 90 chiral and achiral micropollutants representing a broad range of biological and physico-chemical properties were studied simultaneously for the first time...
November 19, 2016: Science of the Total Environment
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