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https://www.readbyqxmd.com/read/28325014/real-time-monitoring-of-swimming-performance
#1
R Delgado-Gonzalo, A Lemkaddem, Ph Renevey, E Muntane Calvo, M Lemay, K Cox, D Ashby, J Willardson, M Bertschi
This article presents the performance results of a novel algorithm for swimming analysis in real-time within a low-power wrist-worn device. The estimated parameters are: lap count, stroke count, time in lap, total swimming time, pace/speed per lap, total swam distance, and swimming efficiency (SWOLF). In addition, several swimming styles are automatically detected. Results were obtained using a database composed of 13 different swimmers spanning 646 laps and 858.78 min of total swam time. The final precision achieved in lap detection ranges between 99...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324986/electrocardiographic-waveforms-fitness-check-device-technique-for-sudden-cardiac-death-risk-screening
#2
O J Escalona, M Mendoza
A novel cardiac health device technique development for reliable, non-invasive and cost-effective heart screening in preventive cardiovascular healthcare is presented. In particular, identification of apparently healthy individuals involved in sports activities (particularly in the young, age <; 35 years) who may be at-risk of sudden-cardiac-death (SCD) is mainly focused here. Nevertheless, the same device technique may be prospectively extended for detecting cardiovascular abnormalities in children and adolescents with type1-diabetes, and also in detecting patients with Brugada syndrome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324968/improving-cardiopulmonary-resuscitation-cpr-outcomes-using-model-based-optimization
#3
Dieter Bender, Ali Jalali, C Nataraj
Cardiopulmonary Resuscitation (CPR) outcomes are far from optimal as practiced today, and prior work has documented that among probable reasons is the fact that the procedure remains to be fully understood. In an attempt to gain a broader understanding of the CPR physiology and the elemental principles underlying the CPR outcomes, this study proposes a novel approach. The analysis is carried out in three major steps. First, an appropriate cardiovascular system model was adopted and simulated using real CPR data as the input...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324935/photoplethysmography-towards-a-non-invasive-pressure-measurement-technique
#4
H Njoum, P A Kyriacou
There is a need for non-invasive and continuous blood pressure measurements. This study explored the relationship between Photoplethysmography (PPG) and Pressure-Volume (P-V) changes in an in vitro model. We proposed and compared methods for an estimation of the pulsatile volume, termed as Normalized Pulse Volume (NPV) and Adjusted Pulse Volume (APV). To validate the methods, pressure, Red (R) and InfraRed (IR) PPG signals were recorded continuously in an arterial model utilizing a pulsatile pump. Flow rates were controlled by varying pumping frequencies at low and high stroke volumes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324889/evaluation-of-clinicopathological-factors-in-pd-1-response-derivation-and-validation-of-a-prediction-scale-for-response-to-pd-1-monotherapy
#5
Adi Nosrati, Katy K Tsai, Simone M Goldinger, Paul Tumeh, Barbara Grimes, Kimberly Loo, Alain P Algazi, Thi Dan Linh Nguyen-Kim, Mitchell Levesque, Reinhard Dummer, Omid Hamid, Adil Daud
BACKGROUND: Anti-PD-1 therapy has shown significant clinical activity in advanced melanoma. We developed and validated a clinical prediction scale for response to anti- PD-1 monotherapy. METHODS: A total of 315 patients with advanced melanoma treated with pembrolizumab (2 or 10 mg kg(-1) Q2W or Q3W) or nivolumab (3 mg kg(-1) Q2W) at four cancer centres between 2011 to 2013 served as the setting for the present cohort study. Variables with significant association to response on a univariate analysis were entered into a forward stepwise logistic regression model and were given a score based on ORs to calculate a clinical prediction scale...
March 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28324840/biosorption-of-diethyl-phthalate-ester-by-living-and-nonliving-burkholderia-cepacia-and-the-role-of-its-cell-surface-components
#6
Si Luo, Langlang Li, Anwei Chen, Qingru Zeng, Hao Xia, Ji-Dong Gu
In this study, the dibutyl phthalate (DBP) binding properties of a DBP-tolerant bacterium (B. cepacia) were characterized in terms of adsorption kinetics and isotherm. Living and nonliving cells both exhibited rapid removal of DBP, achieving more than 80% of maximum sorption within 30 min of contact and reached the equilibrium after 3 h. The adsorption isotherms were well fitted with the Sips model and the nonliving cells have greater biosorption capacity and affinity for DBP than the living cells. Furthermore, the absence of an active mechanism dependent on metabolism implied that the DBP bioaccumulation by living cells was mainly attribute to passive surface binding...
March 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28324835/flexible-biological-arsenite-oxidation-utilizing-nox-and-o2-as-alternative-electron-acceptors
#7
Jie Wang, Junfeng Wan, Zihao Wu, Hongli Li, Haisong Li, Christophe Dagot, Yan Wang
The feasibility of flexible microbial arsenite (As(III)) oxidation coupled with the reduction of different electron acceptors was investigated. The results indicated the acclimated microorganisms could oxidize As(III) with oxygen, nitrate and nitrite as the alternative electron acceptors. A series of batch tests were conducted to measure the kinetic parameters of As(III) oxidation and to evaluate the effects of environmental conditions including pH and temperature on the activity of biological As(III) oxidation dependent on different electron acceptors...
March 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28324780/the-longitudinal-relationship-between-control-over-working-hours-and-depressive-symptoms-results-from-slosh-a-population-based-cohort-study
#8
Sophie C Albrecht, Göran Kecklund, Kristiina Rajaleid, Constanze Leineweber
BACKGROUND: Psychosocial work factors can affect depressive moods, but research is inconclusive if flexibility to self-determine working hours (work-time control, WTC) is associated with depressive symptoms over time. We investigated if either sub-dimension of WTC, control over daily hours and control over time off, was related to depressive symptoms over time and examined causal, reversed-causal, and reciprocal pathways. METHODS: The study was based on four waves of the Swedish Longitudinal Occupational Survey of Health which is a follow-up of representative samples of the Swedish working population...
March 7, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28324757/perceptual-category-learning-and-visual-processing-an-exercise-in-computational-cognitive-neuroscience
#9
George Cantwell, Maximilian Riesenhuber, Jessica L Roeder, F Gregory Ashby
The field of computational cognitive neuroscience (CCN) builds and tests neurobiologically detailed computational models that account for both behavioral and neuroscience data. This article leverages a key advantage of CCN-namely, that it should be possible to interface different CCN models in a plug-and-play fashion-to produce a new and biologically detailed model of perceptual category learning. The new model was created from two existing CCN models: the HMAX model of visual object processing and the COVIS model of category learning...
March 6, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28324707/chemical-structure-based-predictive-model-for-the-oxidation-of-trace-organic-contaminants-by-sulfate-radical
#10
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/28324686/biosorption-of-the-strontium-ion-by-irradiated-saccharomyces-cerevisiae-under-culture-conditions
#11
Liang Qiu, Jundong Feng, Yaodong Dai, Shuquan Chang
As a new-emerging method for strontium disposal, biosorption has shown advantages such as high sorption capacity; low cost. In this study, we investigated the potential of Saccharomyces cerevisiae (S. cerevisiae) in strontium disposal under culture conditions and the effects of irradiation on their biosorption capabilities. We found that S. cerevisiae can survive irradiation and grow. Pre-exposure to irradiation rendered S. cerevisiae resistant to further irradiation. Surprisingly, the pre-exposure to irradiation can increase the biosorption capability of S...
March 17, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28324326/the-impact-of-fabry-disease-on-reproductive-fitness
#12
Dawn A Laney, Virginia Clarke, Allison Foley, Eric W Hall, Scott E Gillespie, Myrl Holida, Morgan Simmons, Alexandrea Wadley
Fabry disease (FD) is a pan-ethnic, X-linked, progressive lysosomal storage disorder caused by pathogenic mutations in the GLA gene. Published case reports and abstracts suggest that decreased reproductive fitness may occur in males with FD. In order to understand the impact of FD on reproductive fitness and increase the accuracy of reproductive genetic counseling, this study examines a large, multi-centered population of individuals with FD to determine if males have reduced reproductive fitness. Study data were collected on 376 patients through two, gender-specific surveys distributed across the United States and Canada...
March 22, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28324258/optimizing-irrigation-and-nitrogen-for-wheat-through-empirical-modeling-under-semi-arid-environment
#13
Umer Saeed, Syed Aftab Wajid, Tasneem Khaliq, Zahir Ahmad Zahir
Nitrogen fertilizer availability to plants is strongly linked with water availability. Excessive or insufficient use of nitrogen can cause reduction in grain yield of wheat and environmental issues. The per capita per annum water availability in Pakistan has reduced to less than 1000 m(3) and is expected to reach 800 m(3) during 2025. Irrigating crops with 3 or more than 3 in. of depth without measuring volume of water is not a feasible option anymore. Water productivity and economic return of grain yield can be improved by efficient management of water and nitrogen fertilizer...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324251/simulating-changes-in-cropping-practises-in-conventional-and-glyphosate-tolerant-maize-i-effects-on-weeds
#14
Nathalie Colbach, Alice Fernier, Valérie Le Corre, Antoine Messéan, Henri Darmency
Herbicide-tolerant (HT) crops such as those tolerant to glyphosate simplify weed management and make it more efficient, at least at short-term. Overreliance on the same herbicide though leads to the spread of resistant weeds. Here, the objective was to evaluate, with simulations, the impact on the advent of glyphosate resistance in weeds of modifications in agricultural practises resulting from introducing HT maize into cropping systems. First, we included a single-gene herbicide resistance submodel in the existing multispecific FLORSYS model...
March 21, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28324188/autobiographical-memory-loss-following-a-right-prefrontal-lobe-tumour-resection-a-case-report-and-review-of-the-literature
#15
A A B Jamjoom, P Gallo, J Kandasamy, J Phillips, D Sokol
INTRODUCTION: The right prefrontal lobe has not traditionally been considered eloquent brain. Resection of tumours within this region does not typically lead to permanent functional impairment. In this report, we highlight the case of a patient who developed autobiographical memory loss following an uncomplicated resection of a right prefrontal tumour. CASE MATERIAL: A previously fit and well 15-year old presented with a persistent right-sided headache. An MRI demonstrated an expanded right mid-frontal gyrus with changes consistent with a low-grade tumour...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28324187/frontal-burr-hole-approach-for-neuroendoscopic-resection-of-craniopharyngioma-with-the-nico-myriad-device-report-of-two-cases
#16
Reilin J Moore, Andrea Scherer, Daniel H Fulkerson
OBJECTIVE: Craniopharyngiomas are challenging tumors to resect due to their deep location and proximity to vital structures. The perceived benefit of gross total resection may be tempered by the possibility of permanent disability. Minimally invasive techniques may reduce surgical morbidity while still allowing effective resection. The authors describe their initial experience with a neuroendoscopic transcortical, transventricular approach to two craniopharyngiomas. The surgeries were performed through a right frontal burr hole using the NICO Myriad, a side-cutting, aspiration device that fits through the working channel of a standard neuroendoscope...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28324122/mr-imaging-differentiation-of-fe-2-and-fe-3-based-on-relaxation-and-magnetic-susceptibility-properties
#17
Olaf Dietrich, Johannes Levin, Seyed-Ahmad Ahmadi, Annika Plate, Maximilian F Reiser, Kai Bötzel, Armin Giese, Birgit Ertl-Wagner
PURPOSE: The aim of this study is to evaluate the MR imaging behavior of ferrous (Fe(2+)) and ferric (Fe(3+)) iron ions in order to develop a noninvasive technique to quantitatively differentiate between both forms of iron. METHODS: MRI was performed at 3 T in a phantom consisting of 21 samples with different concentrations of ferrous and ferric chloride solutions (between 0 and 10 mmol/L). A multi-echo spoiled gradient-echo pulse sequence with eight echoes was used for both T 2* and quantitative susceptibility measurements...
March 21, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28324047/functional-imaging-in-the-follow-up-of-enteropancreatic-neuroendocrine-tumors-clinical-usefulness-and-indications
#18
Elettra Merola, Marianne E Pavel, Francesco Panzuto, Gabriele Capurso, Noemi Cicchese, Anja Rinke, Thomas M Gress, Elsa Iannicelli, Daniela Prosperi, Patrizia Pizzichini, Vikas Prasad, Patrizia Kump, Rainer Lipp, Stefano Partelli, Massimo Falconi, Bertram Wiedenmann, Gianfranco Delle Fave
Context: Functional imaging tests (FITs) detecting somatostatin receptors expression (i.e., Somatostatin Receptor Scintigraphy, 68Ga-DOTA-peptide positron emission tomography/computed tomography) have a pivotal role in the diagnosis of neuroendocrine tumors (NETs), while their indication during follow-up still needs to be clarified. Objective: Investigate the role of FITs after diagnosis of metastatic enteropancreatic NETs, identifying patients who might benefit from these exams...
January 13, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28324016/cardiorespiratory-fitness-and-adiposity-as-determinants-of-metabolic-health-pooled-analysis-of-two-twin-cohorts
#19
Sakari Jukarainen, René Holst, Christine Dalgård, Päivi Piirilä, Jesper Lundbom, Antti Hakkarainen, Nina Lundbom, Aila Rissanen, Jaakko Kaprio, Kirsten Ohm Kyvik, Thorkild I A Sørensen, Kirsi H Pietiläinen
Context: The joint effects of cardiorespiratory fitness and body composition on metabolic health are not well known. Objective: To examine the associations of cardiorespiratory fitness (CRF), fat free mass index (FFMI) and fat mass index (FMI) with metabolic health in individual twins and controlling for genetic and shared environmental effects by studying monozygotic intrapair differences. Design, setting & participants: Two cross-sectional samples of healthy adult monozygotic and dizygotic twins were drawn from population-based Danish and Finnish national twin registries (n=996 and n=309)...
January 23, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323973/how-to-measure-adipose-tissue-insulin-sensitivity
#20
Esben Søndergaard, Ana Elena Espinosa De Ycaza, Maria Morgan-Bathke, Michael D Jensen
Background: Adipose tissue insulin resistance may be a proximate cause of hepatic and skeletal muscle insulin resistance by releasing excess FFA. However, no consensus exists on how to quantify adipose tissue insulin sensitivity. We compared three methods for measuring adipose tissue insulin sensitivity ranging from the complex multistep pancreatic clamp technique to the simple adipose tissue insulin resistance index (Adipo-IR). Methods: We completed studies of 25 adults with a wide range of insulin sensitivity...
January 31, 2017: Journal of Clinical Endocrinology and Metabolism
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