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https://www.readbyqxmd.com/read/28324931/muscle-activity-distribution-features-extracted-from-hd-semg-to-perform-forearm-pattern-recognition
#1
F Nougarou, A Campeau-Lecours, D Massicotte, B Gosselin
An efficient pattern recognition system based exclusively on forearm surface Electromyographic (sEMG) signals is proposed to provide a more intuitive control of a robotic arm used by some of the disabled. The main contribution of this paper is the use of an original set of features characterizing the muscle activity distribution obtained with high-density sEMG (HD sEMG) sensors. Contrary to simple sEMG, HD sEMG can produce muscle activity images with spatial distributions that differ according to forearm movement...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324824/new-algorithm-for-analyzing-phosphorescence-curves-its-application-to-the-k2yf5-pr-compound
#2
F Ortega, J Marcazzó, F Spano, M Santiago, P Molina, E Caselli
Analysis of phosphorescence curves is an alternative procedure to glow curve analysis in order to find the parameters characterizing trap and recombination centers of thermoluminescence materials. In this article a new algorithm to analyze phosphorescence curves is reported, which is derived from the set of coupled differential equation describing the carrier traffic without resorting to approximations. The new algorithm has been employed to analyze the phosphorescence curves of the K2YF5:Pr compound.
March 6, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28324707/chemical-structure-based-predictive-model-for-the-oxidation-of-trace-organic-contaminants-by-sulfate-radical
#3
Tiantian Ye, Zongsu Wei, Richard Spinney, Chong-Jian Tang, Shuang Luo, Ruiyang Xiao, Dionysios D Dionysiou
Second-order rate constants [Formula: see text] for the reaction of sulfate radical anion (SO4(•-)) with trace organic contaminants (TrOCs) are of scientific and practical importance for assessing their environmental fate and removal efficiency in water treatment systems. Here, we developed a chemical structure-based model for predicting [Formula: see text] using 32 molecular fragment descriptors, as this type of model provides a quick estimate at low computational cost. The model was constructed using the multiple linear regression (MLR) and artificial neural network (ANN) methods...
March 6, 2017: Water Research
https://www.readbyqxmd.com/read/28323688/challenges-of-inpatient-glycemic-control
#4
Sally O Gerard, Josephine Ritchie
Hyperglycemia occurs in more than 30% of hospitalized patients. The condition has been associated with higher mortality and poor outcomes. Systems to effectively treat dysglycemia have been put into place, although many focus on critical care areas. The purpose of this article is to provide an overview of the challenges for glycemic control in non-critical care areas. Standardized order sets, critical pathways, professional education, and collaborative systems can support improved control.
March 20, 2017: Journal of Nursing Care Quality
https://www.readbyqxmd.com/read/28323592/measuring-uptake-and-elimination-of-nitrogen-in-humans-at-different-ambient-pressures
#5
Patrik Sundblad, Oskar Frånberg, Christoph Siebenmann, Mikael Gennser
BACKGROUND: To measure nitrogen (N2) wash-out and uptake requires elaborate set-ups, especially when doing the measurements at increased or decreased ambient pressure. Here we present a transportable device for quantifying N2 turnover in humans which can be used at different ambient pressures. METHODS: A modified close-circuit electronic rebreather was used to assess N2 turnover. Changes in N2 volume within the rebreathing circuit, reflecting N2 uptake or washout, were derived from the continuously monitored total system volume and the calculated volumes of oxygen and water vapor...
December 1, 2016: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28323517/differences-in-adolescent-emotion-regulation-and-impulsivity-a-group-comparison-study-of-school-based-recovery-students
#6
Beth S Russell, Anne Thompson Heller, Morica Hutchison
BACKGROUND: Recovery high schools (RHS) vary in organization and operating philosophy, but are designed to support the unique needs of students struggling with substance use disorders (SUD). Previous research on youth risk taking behaviors suggests emotion regulation is a key predictor of outcomes. Specifically, the ability to respond in adaptive rather than maladaptive ways is often associated with challenges of impulsivity, poor distress tolerance, and adolescent substance use. OBJECTIVES: The current study considers data from RHS students in order to answer research questions concerning impulsivity and emotion regulation of youth working to change their risk trajectories in comparison to group of typically developing youth...
March 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28323440/does-prior-administration-of-the-rbans-influence-performance-on-subsequent-neuropsychological-testing
#7
Matthew Calamia, Scott Roye, Austin Lemke
The objective of this study was to determine whether administration of the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) prior to other neuropsychological testing improves performance on subsequent measures due to practice effects. Participants completed the RBANS and related neuropsychological measures of the same cognitive domain in one of two counterbalanced orders. A MANOVA and follow-up independent t-tests were used to examine whether or not completing one set of measures prior to the other was associated with score differences...
March 21, 2017: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/28323432/electronic-structures-and-oh-induced-atmospheric-degradation-of-cf3nsf2-a-potential-green-dielectric-replacement-for-sf6
#8
Lin Cheng, Xiaojuan Yu, Kun Zhao, Hua Hou, Baoshan Wang
Electronic structures of Trifluoromethyl imionosulfur difluoride (CF3NSF2) and degradation mechanisms by hydroxyl radical have been investigated using density functional theory (M06-2X), the complete basis set quadratic CBS-Q, and the explicitly correlated coupled-cluster methods [CCSD(T)-F12]. The d-function augmented Correlation-consistent basis sets including triple- and quadruple- were employed for the sulfur-containing species. It was found that CF3NSF2 exists as two conformations connected by the internal rotation of CF3 around the central NS bond...
March 21, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28320166/the-duration-of-the-cortical-silent-period-is-not-abnormal-in-restless-legs-syndrome-willis-ekbom-disease
#9
Joselisa Péres Queiroz de Paiva, Samir Câmara Magalhães, Gilmar Fernandes do Prado, Alan Luiz Eckeli, Alain Kaelin-Lang, Adriana Bastos Conforto
OBJECTIVE: To compare the duration of the cortical silent period (CSP) measured in a hand muscle in subjects with primary Restless Legs Syndrome (RLS/WED) and controls, using four different methods of analysis. METHODS: The CSP to transcranial magnetic stimulation of the dominant motor cortex was assessed in the abductor digiti minimi of 33 subjects with RLS/WED and 24 controls. CSP duration was measured by an automated and three visually-guided methods. RESULTS: There were significant differences between absolute values of CSP duration according to the method of analysis...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28320069/usefulness-of-laboratory-and-radiological-investigations-in-the-management-of-supraventricular-tachycardia
#10
Aadith Ashok, Miguel Cabalag, David McD Taylor
OBJECTIVE: Although ED patients presenting with supraventricular tachycardia (SVT) are commonly investigated, the value of these investigations has been questioned. We aimed to determine the frequency and utility of investigations in patients with SVT. METHODS: We undertook an explicit retrospective medical record audit of patients with SVT who presented to a single ED (January 2004 to June 2014). Data on demographics, presenting complaints, investigations and outcomes were extracted...
March 20, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28319909/stability-and-change-in-disease-prestige-a-comparative-analysis-of-three-surveys-spanning-a-quarter-of-a-century
#11
Dag Album, Lars E F Johannessen, Erik B Rasmussen
In this paper, we present a comparative analysis of three survey studies of disease prestige in medical culture. The studies were conducted in 1990, 2002 and 2014 using the same research design. In each of the three rounds, a sample of Norwegian physicians was asked to rate a set of 38 diseases on a scale from 1 to 9 according to the prestige they believed health personnel in general would award them. The results show a remarkable stability in the prestige rank order over 25 years. The top three diseases in all three surveys were leukaemia, brain tumour and myocardial infarction...
March 14, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28319709/towards-an-integrated-understanding-of-how-micro-scale-processes-shape-groundwater-ecosystem-functions
#12
Susanne I Schmidt, Mark O Cuthbert, Marc Schwientek
Micro scale processes are expected to have a fundamental role in shaping groundwater ecosystems and yet they remain poorly understood and under-researched. In part, this is due to the fact that sampling is rarely carried out at the scale at which microorganisms, and their grazers and predators, function and thus we lack essential information. While set within a larger scale framework in terms of geochemical features, supply with energy and nutrients, and exchange intensity and dynamics, the micro scale adds variability, by providing heterogeneous zones at the micro scale which enable a wider range of redox reactions...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319203/relationship-between-low-tube-voltage-70-kv-and-the-iodine-delivery-rate-idr-in-ct-angiography-an-experimental-in-vivo-study
#13
Michael M Lell, Ulrike Fleischmann, Hubertus Pietsch, Johannes G Korporaal, Ulrike Haberland, Andreas H Mahnken, Thomas G Flohr, Michael Uder, Gregor Jost
OBJECTIVE: Very short acquisition times and the use of low-kV protocols in CTA demand modifications in the contrast media (CM) injection regimen. The aim of this study was to optimize the use of CM delivery parameters in thoraco-abdominal CTA in a porcine model. MATERIALS AND METHODS: Six pigs (55-68 kg) were examined with a dynamic CTA protocol (454 mm scan length, 2.5 s temporal resolution, 70 s total acquisition time). Four CM injection protocols were applied in a randomized order...
2017: PloS One
https://www.readbyqxmd.com/read/28319151/ethical-problems-in-an-era-where-disasters-have-become-a-part-of-daily-life-a-qualitative-study-of-healthcare-workers-in-turkey
#14
M Murat Civaner, Kevser Vatansever, Kayihan Pala
BACKGROUND: Natural disasters, armed conflict, migration, and epidemics today occur more frequently, causing more death, displacement of people and economic loss. Their burden on health systems and healthcare workers (HCWs) is getting heavier accordingly. The ethical problems that arise in disaster settings may be different than the ones in daily practice, and can cause preventable harm or the violation of basic human rights. Understanding the types and the determinants of ethical challenges is crucial in order to find the most benevolent action while respecting the dignity of those affected people...
2017: PloS One
https://www.readbyqxmd.com/read/28319133/effects-of-sudden-walking-perturbations-on-neuromuscular-reflex-activity-and-three-dimensional-motion-of-the-trunk-in-healthy-controls-and-back-pain-symptomatic-subjects
#15
Juliane Mueller, Tilman Engel, Steffen Mueller, Josefine Stoll, Heiner Baur, Frank Mayer
BACKGROUND: Back pain patients (BPP) show delayed muscle onset, increased co-contractions, and variability as response to quasi-static sudden trunk loading in comparison to healthy controls (H). However, it is unclear whether these results can validly be transferred to suddenly applied walking perturbations, an automated but more functional and complex movement pattern. There is an evident need to develop research-based strategies for the rehabilitation of back pain. Therefore, the investigation of differences in trunk stability between H and BPP in functional movements is of primary interest in order to define suitable intervention regimes...
2017: PloS One
https://www.readbyqxmd.com/read/28319100/metagenomic-discovery-of-polybrominated-diphenyl-ether-biosynthesis-by-marine-sponges
#16
Vinayak Agarwal, Jessica M Blanton, Sheila Podell, Arnaud Taton, Michelle A Schorn, Julia Busch, Zhenjian Lin, Eric W Schmidt, Paul R Jensen, Valerie J Paul, Jason S Biggs, James W Golden, Eric E Allen, Bradley S Moore
Naturally produced polybrominated diphenyl ethers (PBDEs) pervade the marine environment and structurally resemble toxic man-made brominated flame retardants. PBDEs bioaccumulate in marine animals and are likely transferred to the human food chain. However, the biogenic basis for PBDE production in one of their most prolific sources, marine sponges of the order Dysideidae, remains unidentified. Here, we report the discovery of PBDE biosynthetic gene clusters within sponge-microbiome-associated cyanobacterial endosymbionts through the use of an unbiased metagenome-mining approach...
March 20, 2017: Nature Chemical Biology
https://www.readbyqxmd.com/read/28318965/the-social-benefits-of-weee-re-use-schemes-a-cost-benefit-analysis-for-pcs-in-spain
#17
Xose Manuel González, Miguel Rodríguez, Yolanda Pena-Boquete
One goal of the new European legislation set out in WEEE Directive 2012/19/UE is the promotion of WEEE re-use schemes. However, some authors are rather sceptical about the contribution of WEEE re-use schemes to improve resource efficiency. In order to evaluate and to design adequate policy instruments, some authors recommend the cost-benefit analysis (CBA) as a compulsory first step. In this context, the main contribution of this paper is to enlarge the empirical literature by providing a CBA of re-use schemes versus recycling processes of PCs...
March 16, 2017: Waste Management
https://www.readbyqxmd.com/read/28318946/easy-and-rapid-preparation-of-benzoylhydrazides-and-their-diazene-derivatives-as-inhibitors-of-15-lipoxygenase
#18
Cristian Tirapegui, Williams Acevedo-Fuentes, Pablo Dahech, Claudia Torrent, Pablo Barrias, Macarena Rojas-Poblete, Carolina Mascayano
Two series of diaza derivatives were prepared by solvent-free condensation of benzoic acid and 4-substituted phenylhydrazines in order to obtain phenylhydrazides (HYD series) and, by oxidation of these compounds, the corresponding benzoyldiazenes (DIA series). Both sets were evaluated as inhibitors of soybean 15-lipoxygenase activity and antioxidant capability in the FRAP and CUPRAC assays. The most potent inhibitors of both series exhibited IC50 values in the low micromolar range. Kinetic studies showed that at least the more active compounds were competitive inhibitors...
March 8, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28318667/paying-medicare-advantage-plans-to-level-or-tilt-the-playing-field
#19
Jacob Glazer, Thomas G McGuire
Medicare beneficiaries are eligible for health insurance through the public option of traditional Medicare (TM) or may join a private Medicare Advantage (MA) plan. Both are highly subsidized but in different ways. Medicare pays for most of costs directly in TM, and subsidizes MA plans based on a "benchmark" for each beneficiary choosing a private plan. The level of this benchmark is arguably the most important policy decision Medicare makes about the MA program. Many analysts recommend equalizing Medicare's subsidy across the options - referred to in policy circles as a "level playing field...
December 29, 2016: Journal of Health Economics
https://www.readbyqxmd.com/read/28318567/determination-of-ochratoxin-a-in-wine-by-packed-in-tube-solid-phase-microextraction-followed-by-high-performance-liquid-chromatography-coupled-to-tandem-mass-spectrometry
#20
Mariane A Andrade, Fernando M Lanças
Ochratoxin A (OTA), a widely studied mycotoxin, can be found in a variety of food matrices. As its concentration in food is generally low (in the order of μg kg(-1)), sample preparation techniques are necessary for the analyte purification and pre-concentration in order to achieve the required low detection limits. The separation and detection methods used for OTA analysis should also offer proper sensitivity in order to allow the adequate quantification of the analyte. This manuscript addresses the development of a methodology aiming the analysis of OTA in wine samples by packed in-tube SPME in flow through extraction mode coupled to HPLC-MS/MS...
March 1, 2017: Journal of Chromatography. A
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