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https://www.readbyqxmd.com/read/28187883/enhancement-of-lung-sounds-based-on-empirical-mode-decomposition-and-fourier-transform-algorithm
#1
Ashok Mondal, Poulami Banerjee, Ajay Somkuwar
BACKGROUND AND OBJECTIVE: There is always heart sound (HS) signal interfering during the recording of lung sound (LS) signals. This obscures the features of LS signals and creates confusion on pathological states, if any, of the lungs. In this work, a new method is proposed for reduction of heart sound interference which is based on empirical mode decomposition (EMD) technique and prediction algorithm. METHOD: In this approach, first the mixed signal is split into several components in terms of intrinsic mode functions (IMFs)...
February 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28186646/re-evaluation-of-the-adjunctive-effect-of-platelet-rich-fibrin-to-enamel-matrix-derivative-in-the-treatment-of-intrabony-defects-six-month-results-of-a-randomized-split-mouth-controlled-clinical-study
#2
Eralp Buduneli, Nurcan Buduneli
We have read with great interest the recent article by Turkal et al. (2016). In their study, the results obtained with enamel matrix derivative (EMD) and EMD + platelet-rich fibrin (PRF) were compared in the treatment of intrabony defects in patients with chronic periodontitis. The authors concluded that both therapies resulted in significant clinical improvement in intrabony defect treatment, but addition of PRF did not improve the clinical and radiographic outcomes. A recent review article provided the biological background for the use of EMD and discussed the current evidence for periodontal regeneration (Miron et al...
February 10, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28184955/-tranexamic-acid-in-the-german-emergency-medical-service-a%C3%A2-national-survey
#3
V Zickenrott, I Greb, A Henkelmann, F Balzer, S Casu, L Kaufner, C von Heymann, K Zacharowski, C F Weber
BACKGROUND: Trauma-induced coagulopathy, one of the leading causes of trauma-related death, is detected in about one of four trauma patients upon hospital admission. The current European Management of Major Bleeding and Coagulopathy Following Trauma guidelines, published in 2013, recommend that tranexamic acid (TXA) be administered as early as possible to inhibit hyperfibrinolysis (grade of recommendation (GoR 1A)). Furthermore, it is suggested that protocols for the management of patients with bleeding or showing signs of bleeding include the administration of the first dose of TXA at the site of injury or during transportation to hospital (GoR 2C)...
February 9, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/28178220/a-signal-processing-approach-with-a-smooth-empirical-mode-decomposition-to-reveal-hidden-trace-of-corrosion-in-highly-contaminated-guided-wave-signals-for-concrete-covered-pipes
#4
Javad Rostami, Jingming Chen, Peter W Tse
Ultrasonic guided waves have been extensively applied for non-destructive testing of plate-like structures particularly pipes in past two decades. In this regard, if a structure has a simple geometry, obtained guided waves' signals are easy to explain. However, any small degree of complexity in the geometry such as contacting with other materials may cause an extra amount of complication in the interpretation of guided wave signals. The problem deepens if defects have irregular shapes such as natural corrosion...
February 7, 2017: Sensors
https://www.readbyqxmd.com/read/28171785/dynamic-versus-isometric-electromechanical-delay-in-non-fatigued-and-fatigued-muscle-a-combined-electromyographic-mechanomyographic-and-force-approach
#5
Cory M Smith, Terry J Housh, Ethan C Hill, Glen O Johnson, Richard J Schmidt
This study used a combined electromyographic, mechanomyographic, and force approach to identify electromechanical delay (EMD) from the onsets of the electromyographic to force signals (EMDE-F), onsets of the electromyographic to mechanomyogrpahic signals (EMDE-M), and onsets of mechanomyographic to force signals (EMDM-F). The purposes of the current study were to examine: (1) the differences in EMDE-F, EMDE-M, and EMDM-F from the vastus lateralis during maximal, voluntary dynamic (1 repetition maximum [1-RM]) and isometric (maximal voluntary isometric contraction [MVIC]) muscle actions; and (2) the effects of fatigue on EMDE-F, EMDM-F, and EMDE-M...
January 27, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/28170348/thermal-conductivity-calculation-of-nano-suspensions-using-green-kubo-relations-with-reduced-artificial-correlations
#6
Murali Gopal Muraleedharan, Dilip Sundaram, Asegun Henry, Vigor Yang
The presence of artificial correlations associated with Green-Kubo (GK) thermal conductivity calculations is investigated. The thermal conductivity of nano-suspensions is calculated by equilibrium molecular dynamics (EMD) simulations using GK relations. Calculations are first performed for a single alumina (Al2O3) nanoparticle dispersed in a water medium. For a particle size of 1 nm and volume fraction of 9%, results show enhancements as high as 235%, which is much higher than the Maxwell model predictions...
February 7, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28161862/two-dimensional-empirical-mode-decomposition-of-heavy-metal-spatial-variation-in-agricultural-soils-southeast-china
#7
Chunfa Wu, Jingyi Huang, Budiman Minasny, Hao Zhu
The distribution of heavy metals in agricultural soils is affected by various anthropogenic activities and environmental factors occurring at different spatial scales. This paper introduced the two-dimensional empirical mode decomposition (2D-EMD) to separate the spatial variability in soil heavy metals into different scales. Geostatistics and multivariate analysis were also utilized to quantify their spatial structure and identify their potential influencing factors. The study was conducted in an arable land in southeastern China where 260 surface soil samples were collected and measured for total contents of cadmium (Cdtotal), mercury (Hgtotal), and sulfur (TS); pH; and soil organic carbon content (SOC)...
February 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28152063/a-wavelet-based-technique-to-predict-treatment-outcome-for-major-depressive-disorder
#8
Wajid Mumtaz, Likun Xia, Mohd Azhar Mohd Yasin, Syed Saad Azhar Ali, Aamir Saeed Malik
Treatment management for Major Depressive Disorder (MDD) has been challenging. However, electroencephalogram (EEG)-based predictions of antidepressant's treatment outcome may help during antidepressant's selection and ultimately improve the quality of life for MDD patients. In this study, a machine learning (ML) method involving pretreatment EEG data was proposed to perform such predictions for Selective Serotonin Reuptake Inhibitor (SSRIs). For this purpose, the acquisition of experimental data involved 34 MDD patients and 30 healthy controls...
2017: PloS One
https://www.readbyqxmd.com/read/28143489/obesity-and-neuroinflammatory-phenotype-in-mice-lacking-endothelial-megalin
#9
Fernando Bartolome, Desiree Antequera, Eva Tavares, Consuelo Pascual, Rosario Maldonado, Antoni Camins, Eva Carro
BACKGROUND: The multiligand receptor megalin controls the brain uptake of a number of ligands, including insulin and leptin. Despite the role of megalin in the transport of these metabolically relevant hormones, the role of megalin at the blood-brain-barrier (BBB) has not yet been explored in the context of metabolic regulation. METHODS: Here we investigate the role of brain endothelial megalin in energy metabolism and leptin signaling using an endothelial cell-specific megalin deficient (EMD) mouse model...
January 31, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28137754/efficacy-and-safety-of-follitropin-alfa-lutropin-alfa-in-art-a-randomized-controlled-trial-in-poor-ovarian-responders
#10
P Humaidan, W Chin, D Rogoff, T D'Hooghe, S Longobardi, J Hubbard, J Schertz
STUDY QUESTION: How does the efficacy and safety of a fixed-ratio combination of recombinant human FSH plus recombinant human LH (follitropin alfa plus lutropin alfa; r-hFSH/r-hLH) compare with that of r-hFSH monotherapy for controlled ovarian stimulation (COS) in patients with poor ovarian response (POR)? SUMMARY ANSWER: The primary and secondary efficacy endpoints were comparable between treatment groups and the safety profile of both treatment regimens was favourable...
January 30, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28134829/early-healing-events-after-periodontal-surgery-observations-on-soft-tissue-healing-microcirculation-and-wound-fluid-cytokine-levels
#11
Doğan Kaner, Mouaz Soudan, Han Zhao, Georg Gaßmann, Anna Schönhauser, Anton Friedmann
Early wound healing after periodontal surgery with or without enamel matrix derivative/biphasic calcium phosphate (EMD/BCP) was characterized in terms of soft tissue closure, changes of microcirculation, and expression of pro- and anti-inflammatory cytokines in gingival crevicular fluid/wound fluid (GCF/WF). Periodontal surgery was carried out in 30 patients (18 patients: application of EMD/BCP for regeneration of bony defects; 12 patients: surgical crown lengthening (SCL)). Healthy sites were observed as untreated controls...
January 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28129203/an-active-electrolocation-catheter-system-for-imaging-and-analysis-of-coronary-plaques
#12
Martin Gottwald, Anna Matuschek, Gerhard von der Emde
Coronary artery disease-currently one of the most frequent causes of death-is characterized by atherosclerotic plaques grown in the wall of blood vessels and inhibiting blood flow. Preventive assessment focusses on critical sizes of structural plaque parameters like relative lipid core area and cap thickness to identify high-risk plaques called thin cap fibroatheromas. Although state-of-the-art catheter systems were successfully applied in invasive plaque diagnostics, the high costs induced by these devices inhibit usage in daily clinical practice...
January 27, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28123485/effects-of-enamel-matrix-proteins-on-adherence-proliferation-and-migration-of-epithelial-cells-a-real-time-in-vitro-study
#13
Marzena Wyganowska-Swiatkowska, Paulina Urbaniak, Daniel Lipinski, Marlena Szalata, Karolina Borysiak, Jerzy Jakun, Malgorzata Kotwicka
Enamel matrix derivative (EMD) can mimic odontogenic effects by inducing the proliferation and differentiation of connective tissue progenitor cells, stimulating bone growth and arresting epithelial cells migration. To the best of our knowledge, there is no data indicating that any active component of EMD reduces epithelial cell viability. The present study examines the impact of commercial lyophilized EMD, porcine recombinant amelogenin (prAMEL; 21.3 kDa) and tyrosine-rich amelogenin peptide (TRAP) on the adherence, proliferation and migration of human epithelial cells in real-time...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28113497/subharmonic-response-of-polymer-contrast-agents-based-on-the-empirical-mode-decomposition
#14
Rintaro Hayashi, John S Allen, Parag Chitnis, Jonathan Mamou, Jeffrey A Ketterling
The subharmonic threshold for ultrasound contrast agent has been defined as a 20-25 dB difference between fundamental and subharmonic (2/1) spectral components of the backscatter signal. However, this Fourier-based criteria assumes a linear, time-invariant signal. A more appropriate criterion for short cycle and frequency modulated waveforms is proposed with an adaptive signal-processing approach based on the Empirical Mode Decomposition (EMD) method. The signal is decomposed into an orthogonal basis known as Intrinsic Mode Functions (IMFs) and a subharmonic threshold is defined with respect to the energy ratio of the subharmonic IMF component to that of the incident signal...
October 4, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28110742/comparison-of-fft-and-marginal-spectra-of-eeg-using-empirical-mode-decomposition-to-monitor-anesthesia
#15
Shih-Jui Chen, Chia-Ju Peng, Yi-Chun Chen, Yean-Ren Hwang, Ying-Sian Lai, Shou-Zen Fan, Kuo-Kuang Jen
BACKGROUND AND OBJECTIVE: Intraoperative awareness refers that patients can recall aspects of their surgery after being put under general anesthesia. This distressing complication causes affected patients to be conscious and probably feel pain, leading to emotional trauma or other sequelae. Monitoring and administrating the depth of anesthesia is necessary to prevent patients from awareness during a medical operation. In this paper, we analyzed the electroencephalograms (EEGs) of patients to characterize their anesthesia...
December 2016: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28104393/periodontal-tissue-regeneration-using-the-cytokine-cocktail-mimicking-secretomes-in-the-conditioned-media-from-human-mesenchymal-stem-cells
#16
Kohei Sakaguchi, Wataru Katagiri, Masashi Osugi, Takamasa Kawai, Yukiko Sugimura-Wakayama, Hideharu Hibi
Secretomes in the conditioned media from human mesenchymal stem cells (MSC-CM) were previously demonstrated to promote periodontal tissue regeneration. By mixing insulin-like growth factor-1, vascular endothelial growth factor-A, and transforming growth factor-β1 which were included in MSC-CM, we made the cytokine cocktail (CC) mimicking MSC-CM, and then evaluated its efficacy on periodontal tissue regeneration. In vitro, CC promoted the migration of dog bone marrow-derived stem cells and periodontal ligament cells, and the tube formation of human umbilical vein endothelial cells...
January 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28096034/twelve-months-effect-of-self-referral-to-inpatient-treatment-on-patient-activation-recovery-symptoms-and-functioning-a-randomized-controlled-study
#17
I E O Moljord, M L Lara-Cabrera, Ø Salvesen, M B Rise, D Bjørgen, D Ø Antonsen, T M Olsø, G H Evensen, C B Gudde, O M Linaker, A Steinsbekk, L Eriksen
OBJECTIVE: To investigate the effect of having a contract for self-referral to inpatient treatment (SRIT) in patients with severe mental disorders. METHODS: A randomized controlled trial with 53 adult patients; 26 participants received a SRIT contract, which they could use to refer themselves into a Community Mental Health Centre up to five days for each referral without contacting a doctor in advance. Outcomes were assessed after 12 months with the self-report questionnaires Patient Activation Measure (PAM-13), Recovery Assessment Scale (RAS), and the Behavior and Symptom Identification Scale (BASIS-32) and analyzed using linear mixed and regression models...
January 11, 2017: Patient Education and Counseling
https://www.readbyqxmd.com/read/28039545/effects-of-enamel-matrix-derivative-on-non-surgical-management-of-peri-implant-mucositis-a-double-blind-randomized-clinical-trial
#18
Atabak Kashefimehr, Reza Pourabbas, Masumeh Faramarzi, Ali Zarandi, Abouzar Moradi, Howard C Tenenbaum, Amir Azarpazhooh
BACKGROUND: Peri-implant diseases have been recognized as being among the ever-increasing complications related to dental implants. The aim of this study was to evaluate the adjunctive use of enamel matrix derivative (EMD) to mechanical debridement (MD) in patients with these conditions in terms of clinical parameters and cytokine levels of peri-implant crevicular fluid (PICF). METHODS: In the present double-blind clinical trial, 46 patients with peri-implant mucositis (PM) were randomly divided into control and test groups...
December 30, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28036185/transport-diffusion-of-light-gases-in-polyethylene-using-atomistic-simulations
#19
Ravi C Dutta, Suresh K Bhatia
We explore the temperature dependence of the self-, corrected-, and transport-diffusivities of CO2, CH4, and N2 in a polyethylene (PE) polymer membrane through equilibrium molecular dynamics simulations. We also investigate the morphology of the polymer membrane based on the intermolecular radial distribution function, free volume, and pore size distribution analysis. The results indicate the existence of 1.5-3 Å diameter pores in the PE membrane, and with the increase in the temperature, the polymer swells linearly with changing slope at 450 K in the absence of gas and exponentially in the presence of gas...
January 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28026775/sounding-solid-combustibles-non-premixed-flame-sound-synthesis-for-different-solid-combustibles
#20
Qiang Yin, Shiguang Liu
With the rapidly growing VR industry, in recent years, more and more attention has been paid for fire sound synthesis. However, previous methods usually ignore the influences of the different solid combustibles, leading to unrealistic sounding results. This paper proposes SSC (sounding solid combustibles), which is a new recording-driven non-premixed flame sound synthesis framework accounting for different solid combustibles. SSC consists of three components: combustion noise, vortex noise and popping sounds...
December 21, 2016: IEEE Transactions on Visualization and Computer Graphics
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