keyword
MENU ▼
Read by QxMD icon Read
search

EMD

keyword
https://www.readbyqxmd.com/read/27918414/wearable-sensor-based-human-activity-recognition-method-with-multi-features-extracted-from-hilbert-huang-transform
#1
Huile Xu, Jinyi Liu, Haibo Hu, Yi Zhang
Wearable sensors-based human activity recognition introduces many useful applications and services in health care, rehabilitation training, elderly monitoring and many other areas of human interaction. Existing works in this field mainly focus on recognizing activities by using traditional features extracted from Fourier transform (FT) or wavelet transform (WT). However, these signal processing approaches are suitable for a linear signal but not for a nonlinear signal. In this paper, we investigate the characteristics of the Hilbert-Huang transform (HHT) for dealing with activity data with properties such as nonlinearity and non-stationarity...
December 2, 2016: Sensors
https://www.readbyqxmd.com/read/27913328/subharmonic-response-of-polymer-contrast-agents-based-on-the-empirical-mode-decomposition
#2
Rintaro Hayashi, John S Allen, Parag V Chitnis, Jonathan Mamou, Jeffrey A Ketterling
The subharmonic threshold for ultrasound contrast agents has been defined as a 20-25 dB difference between the fundamental and subharmonic (2/1) spectral components of the backscatter signal. However, this Fourier-based criterion 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...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27911330/fhl1b-interacts-with-lamin-a-c-and%C3%A2-emerin-at-the-nuclear-lamina-and%C3%A2-is%C3%A2-misregulated-in-emery-dreifuss-muscular-dystrophy
#3
Esma Ziat, Kamel Mamchaoui, Maud Beuvin, Isabelle Nelson, Feriel Azibani, Simone Spuler, Gisèle Bonne, Anne T Bertrand
BACKGROUND: Emery-Dreifuss muscular dystrophy (EDMD) is associated with mutations in EMD and LMNA genes, encoding for the nuclear envelope proteins emerin and lamin A/C, indicating that EDMD is a nuclear envelope disease. We recently reported mutations in FHL1 gene in X-linked EDMD. FHL1 encodes FHL1A, and the two minor isoforms FHL1B and FHL1C. So far, none have been described at the nuclear envelope. OBJECTIVE: To gain insight into the pathophysiology of EDMD, we focused our attention on the poorly characterized FHL1B isoform...
November 29, 2016: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/27909893/osteogain%C3%A2-loaded-onto-an-absorbable-collagen-sponge-induces-attachment-and-osteoblast-differentiation-of-st2-cells-in-vitro
#4
Richard J Miron, Masako Fujioka-Kobayashi, Yufeng Zhang, Anton Sculean, Benjamin Pippenger, Yoshinori Shirakata, Umadevi Kandalam, Maria Hernandez
OBJECTIVES: Dimensional changes of the alveolar bone following tooth extraction are a major challenge in daily dental practice. To limit bone loss, a variety of biomaterials including bone grafts, barrier membranes, and growth factors have been utilized either alone or in combination therapies to increase the speed and quality of new bone formation. The aim of the present in vitro study was to investigate the regenerative potential of Osteogain®, a new liquid carrier system of enamel matrix derivative (EMD) in combination with an absorbable collagen sponge (ACS) specifically designed for extraction socket healing...
December 1, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27906686/investigation-of-collective-behaviour-and-electrocommunication-in-the-weakly-electric-fish-mormyrus-rume-through-a-biomimetic-robotic-dummy-fish
#5
Elisa Donati, Martin Worm, Stefano Mintchev, Marleen van der Wiel, Giovanni Benelli, Gerhard von der Emde, Cesare Stefanini
A robotic fish has been developed to create a mixed bio-hybrid system made up of weakly electric fish and a mobile dummy fish. Weakly electric fish are capable of interacting with each other via sequences of self-generated electric signals during electrocommunication. Here we present the design of an artificial dummy fish, which is subsequently tested in behavioural experiments. The robot consists of two parts: a flexible tail that can move at different frequencies and amplitudes, performing a carangiform oscillation, and a rigid head containing the motor for the tail oscillation...
December 1, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27904683/rapamycin-targets-interleukin-6-il-6-expression-and-suppresses-endothelial-cell-invasion-stimulated-by-tumor-cells
#6
Oleksandr Ekshyyan, Alok R Khandelwal, Xiaohua Rong, Tara Moore-Medlin, Xiaohui Ma, Jonathan Steven Alexander, Cherie-Ann O Nathan
mTOR inhibitors have potent antiangiogenic and anti-lymphangiogenic effects in addition to their growth inhibitory effects in head and neck squamous cell carcinoma (HNSCC). Lymphatogenous spread is much more predominant in HNSCC than hematogenous spread and significantly decreases survival. In this study we evaluated the effects of rapamycin on targeting tumor-stroma crosstalk in HNSCC. HNSCC tumor cells (FaDu) and human lymphatic endothelial cells (HMEC-1A) were co-cultured in various combinations using transwell cell culture inserts to study tumor-stroma crosstalk and the effects of mTOR inhibitor rapamycin...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27884153/performance-evaluation-of-the-touchscreen-based-muse%C3%A2-auto-cd4-cd4-single-platform-system-for-cd4-t-cell-numeration-in-absolute-number-and-in-percentage-using-blood-samples-from-children-and-adult-patients-living-in-the-central-african-republic
#7
Christian Diamant Mossoro-Kpinde, André Kouabosso, Ralph-Sydney Mboumba Bouassa, Jean De Dieu Longo, Edouard Kokanzo, Rosine Féissona, Gérard Grésenguet, Laurent Bélec
BACKGROUND: The new microcapillary and fluorescence-based EC IVD-qualified Muse™ Auto CD4/CD4% single-platform assay (EMD Millipore Corporation, Merck Life Sciences, KGaA, Darmstadt, Germany) for CD4 T cell numeration in absolute number and in percentage was evaluated using Central African patients' samples compared against the reference EC IVD-qualified BD FACSCount (Becton-Dickinson, USA) flow cytometer. METHODS: EDTA-blood samples from 124 adults, 10 adolescents, 13 children and 3 infants were tested in parallel at 2 reference laboratories in Bangui...
November 25, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27874290/impact-of-clinical-factors-on-outcome-of-leukemia-patients-with-tls-erg-fusion-gene
#8
Jing Pan, Yang Zhang, Yan-Li Zhao, Jun-Fang Yang, Jian-Ping Zhang, Hong-Xing Liu, Tong Wu, Chun-Rong Tong
We report the clinical features and outcome of 22 TLS-ERG(+ )leukemia patients (20 AML and 2 B-ALL). TLS-ERG was tightly associated with extramedullary disease (EMD), complex chromosome abnormalities, and high risk gene mutations including IKZF1, WT1, TET2, NOTCH2, and PHF6. The 6-month leukemia free survival (LFS) with and without EMD was 75% and 83.3% (p = .017). 11/20 AML patients received allogeneic hematopoietic stem cell transplantation (HCT). The 1-year overall survival (OS) in non-HCT and HCT group was 62...
November 22, 2016: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/27862191/significance-of-epidermal-mitoses-in-challenging-melanocytic-proliferations
#9
Eugen C Minca, Steven D Billings, Paul Elson, Michael T Tetzlaff, Aleodor A Andea, Jennifer S Ko
BACKGROUND: Accurate diagnosis of melanoma remains histologically challenging. Dermal mitoses support malignancy, but are only occasionally seen in melanomas. Since melanomagenesis is thought to begin at the dermal-epidermal junction, we investigated the significance of epidermal melanocytic mitoses (EM) in a spectrum of lesions with molecular characterization. METHODS: EM density (EMD) was evaluated in 46 straightforward lesions (24 benign, 22 malignant) and 30 challenging lesions with expert interpretation, fluorescence-in-situ-hybridization, and myPath-score characterization (12 favor-benign, 9 favor-malignant, 9 ambiguous)...
November 15, 2016: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/27845664/the-time-varying-nature-of-electromechanical-delay-and-muscle-control-effectiveness-in-response-to-stimulation-induced-fatigue
#10
Ryan J Downey, Manelle Merad, Eric J Gonzalez, Warren E Dixon
Neuromuscular Electrical Stimulation (NMES) and Functional Electrical Stimulation (FES) are commonly prescribed rehabilitative therapies. Closed-loop NMES holds the promise to yield more accurate limb control, which could enable new rehabilitative procedures. However, NMES/FES can rapidly fatigue muscle, which limits potential treatments and presents several control challenges. Specifically, the stimulation intensity-force relation changes as the muscle fatigues. Additionally, the delayed response between the application of stimulation and muscle force production, termed electromechanical delay (EMD), may increase with fatigue...
November 8, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27834646/application-of-empirical-mode-decomposition-combined-with-notch-filtering-for-interpretation-of-surface-electromyograms-during-functional-electrical-stimulation
#11
Rakesh Pilkar, Mathew Yarossi, Arvind Ramanujam, Venkateswaran Rajagopalan, Mehmed Bugrahan Bayram, Megan Mitchell, Stephan Canton, Gail Forrest
GOAL: The goal of this paper is to demonstrate a novel approach that combines Empirical Mode Decomposition (EMD) with Notch filtering to remove the electrical stimulation (ES) artifact from surface electromyogram (EMG) data for interpretation of muscle responses during functional electrical stimulation (FES) experiments. METHODS: FES was applied to the rectus femoris (RF) muscle unilaterally of 6 able bodied (AB) and 1 individual with spinal cord injury (SCI). Each trial consisted of three repetitions of ES...
November 3, 2016: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/27825102/microvillar-injury-in-renal-tubular-epithelial-cells-induced-by-calcium-oxalate-crystal-and-the-protective-role-of-epigallocatechin-3-gallate
#12
Kedsarin Fong-Ngern, Arada Vinaiphat, Visith Thongboonkerd
Pathogenic mechanisms of kidney stone disease remained unclear. This study investigated its initial cellular/molecular mechanisms when calcium oxalate monohydrate (COM) crystal adhered to renal tubular cells. Transmission electron microscopy revealed decreased length and density of microvilli, whereas Western blot analysis showed that whole-cell ezrin (a microvilli-stabilizing protein), not β-actin, was decreased in COM-treated cells. Immunofluorescence staining, followed by laser-scanning confocal microscopy and subcellular fractionations, revealed decreases in both ezrin and F-/β-actin at apical membrane...
October 7, 2016: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/27818631/peripheral-processing-facilitates-optic-flow-based-depth-perception
#13
Jinglin Li, Jens P Lindemann, Martin Egelhaaf
Flying insects, such as flies or bees, rely on consistent information regarding the depth structure of the environment when performing their flight maneuvers in cluttered natural environments. These behaviors include avoiding collisions, approaching targets or spatial navigation. Insects are thought to obtain depth information visually from the retinal image displacements ("optic flow") during translational ego-motion. Optic flow in the insect visual system is processed by a mechanism that can be modeled by correlation-type elementary motion detectors (EMDs)...
2016: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/27815705/neural-biomechanical-and-physiological-factors-involved-in-sex-related-differences-in-the-maximal-rate-of-isometric-torque-development
#14
J Greig Inglis, Kyle McIntosh, David A Gabriel
OBJECTIVE: Recent research has reported that lower maximal rate of torque development (dτ/dt max) exhibited by females, relative to males, during knee extension can be accounted for by normalization to a maximal voluntary contraction (MVC); however, this was not seen in the upper limb. PURPOSE: The aim of the current work was to examine the contribution of maximum strength (τmax), twitch contraction time (CT), muscle fiber condition velocity (MFCV), and rate of muscle activation (Q30) to sex-differences in the dτ/dt max during maximal isometric dorsiflexion...
November 4, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/27815048/electrophysiological-activity-of-a-neurotoxic-fraction-from-the-venom-of-box-jellyfish-carybdea-marsupialis
#15
Fernando Lazcano-Pérez, Rogelio O Arellano, Edith Garay, Roberto Arreguín-Espinosa, Judith Sánchez-Rodríguez
Carybdea marsupialis is a widely distributed box jellyfish found in the Mediterranean and in the tropical waters of the Caribbean Sea. Its venom is a complex mixture of biologically active compounds that are used to catch prey. In order to evaluate the activity of the neurotoxins in the venom, bioassays were carried out using the marine crab Ocypode quadrata. The proteins with neurotoxic effect were partially purified using low-pressure liquid chromatography techniques. Gel filtration (Sephadex G-50M) was used as the first step and the active fraction in crabs was passed through a QAE Sephadex A-25 column...
November 1, 2016: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/27812678/atrial-function-in-patients-with-breast-cancer-after-treatment-with-anthracyclines
#16
Yalin Tolga Yaylali, Ahmet Saricopur, Mustafa Yurtdas, Hande Senol, Gamze Gokoz-Dogu
Background: Atrial electromechanical delay (EMD) is used to predict atrial fibrillation, measured by echocardiography. Objectives: The aim of this study was to assess atrial EMD and mechanical function after anthracycline-containing chemotherapy. Methods: Fifty-three patients with breast cancer (48 ± 8 years old) who received 240 mg/m2of Adriamycin, 2400 mg/m2 of cyclophosphamide, and 960 mg/m2 of paclitaxel were included in this retrospective study, as were 42 healthy subjects (47 ± 9 years old)...
October 27, 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27766519/sparse-representation-based-emd-and-blda-for-automatic-seizure-detection
#17
Shasha Yuan, Weidong Zhou, Junhui Li, Qi Wu
Epilepsy is a serious chronic neurological disorder, which affects more than 50 million people worldwide, and automatic seizure detection on EEG recordings is extremely required in the diagnosis and monitoring of epilepsy. This paper presents a novel seizure detection method using sparse representation-based Earth Mover's Distance (SR-EMD). In the proposed algorithm, wavelet decomposition is executed on the original EEG recordings with five scales, and the scales 3, 4 and 5 are selected to structure the distributions of EEG signals...
October 20, 2016: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/27737641/dispatch-guideline-adherence-and-response-interval-a-study-of-emergency-medical-calls-in-norway
#18
Eirin N Ellensen, Torben Wisborg, Steinar Hunskaar, Erik Zakariassen
BACKGROUND: The Emergency Medical Communication Centre (EMCC) operators in Norway report using the Norwegian Index for Medical Emergency Assistance (Index), a criteria-based dispatch guideline, in about 75 % of medical emergency calls. The main purpose of a dispatch guideline is to assist the operator in securing a correct response as quickly as possible. The effect of using the guideline on EMCC response interval is as yet unknown. We wanted to ascertain an objective measure of guideline adherence, and explore a possible effect on emergency medical dispatch (EMD) response interval...
October 13, 2016: BMC Emergency Medicine
https://www.readbyqxmd.com/read/27733648/a-valuable-approach-to-the-use-of-electronic-medical-data-in-primary-care-research-panning-for-gold
#19
Stephen Barnett, Joan Henderson, Adam Hodgkins, Christopher Harrison, Abhijeet Ghosh, Bridget Dijkmans-Hadley, Helena Britt, Andrew Bonney
BACKGROUND: Electronic medical data (EMD) from electronic health records of general practice computer systems have enormous research potential, yet many variables are unreliable. OBJECTIVE: The aim of this study was to compare selected data variables from general practice EMD with a reliable, representative national dataset (Bettering the Evaluation and Care of Health (BEACH)) in order to validate their use for primary care research. METHOD: EMD variables were compared with encounter data from the nationally representative BEACH program using χ (2) tests and robust 95% confidence intervals to test their validity (measure what they reportedly measure)...
October 12, 2016: HIM Journal
https://www.readbyqxmd.com/read/27710784/direct-measurement-of-correlation-responses-in-drosophila-elementary-motion-detectors-reveals-fast-timescale-tuning
#20
Emilio Salazar-Gatzimas, Juyue Chen, Matthew S Creamer, Omer Mano, Holly B Mandel, Catherine A Matulis, Joseph Pottackal, Damon A Clark
Animals estimate visual motion by integrating light intensity information over time and space. The integration requires nonlinear processing, which makes motion estimation circuitry sensitive to specific spatiotemporal correlations that signify visual motion. Classical models of motion estimation weight these correlations to produce direction-selective signals. However, the correlational algorithms they describe have not been directly measured in elementary motion-detecting neurons (EMDs). Here, we employed stimuli to directly measure responses to pairwise correlations in Drosophila's EMD neurons, T4 and T5...
October 5, 2016: Neuron
keyword
keyword
113321
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"