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https://www.readbyqxmd.com/read/28433870/automated-detection-of-premature-delivery-using-empirical-mode-and-wavelet-packet-decomposition-techniques-with-uterine-electromyogram-signals
#1
U Rajendra Acharya, Vidya K Sudarshan, Soon Qing Rong, Zechariah Tan, Choo Min Lim, Joel Ew Koh, Sujatha Nayak, Sulatha V Bhandary
An accurate detection of preterm labor and the risk of preterm delivery before 37 weeks of gestational age is crucial to increase the chance of survival rate for both mother and the infant. Thus, the uterine contractions measured using uterine electromyogram (EMG) or electro hysterogram (EHG) need to have high sensitivity in the detection of true preterm labor signs. However, visual observation and manual interpretation of EHG signals at the time of emergency situation may lead to errors. Therefore, the employment of computer-based approaches can assist in fast and accurate detection during the emergency situation...
April 18, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28432030/effects-of-mixed-proximal-and-distal-topogenic-signals-on-the-topological-sensitivity-of-a-membrane-protein-to-the-lipid-environment
#2
Heidi Vitrac, William Dowhan, Mikhail Bogdanov
The final topology of membrane proteins is thought to be dictated primarily by the encoding sequence. However, according to the Charge Balance Rule the topogenic signals within nascent membrane proteins are interpreted in agreement with the Positive Inside Rule as influenced by the protein phospholipid environment. The role of long-range protein-lipid interactions in establishing a final uniform or dual topology is unknown. In order to address this role, we determined the positional dependence of the potency of charged residues as topological signals within Escherichia coli sucrose permease (CscB) in cells in which the zwitterionic phospholipid phosphatidylethanolamine (PE), acting as topological determinant, was either eliminated or tightly titrated...
April 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28409655/9-1-1-triage-of-non-traumatic-chest-pain-association-with-hospital-diagnosis
#3
Greg Scott, Jeff J Clawson, Isabel Gardett, Meghan Broadbent, Nathan Williams, Conrad Fivaz, Gigi Marshall, Tracey Barron, Christopher Olola
OBJECTIVE: Chest pain is one of the most common reasons people seek emergency care-and one of the most critical. In the United States, chest pain is the second most common reason for emergency department (ED) visits. A patient's primary complaint of "chest pain" may reflect a broad range of underlying causes; therefore, it is important that emergency medical service (EMS) agencies gain a thorough understanding of these cases, beginning with the initial management of chest pain in the 9-1-1 center...
April 14, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28396887/comparison-of-enamel-matrix-derivative-emdogain-and-subepithelial-connective-tissue-graft-for-root-coverage-in-patients-with-multiple-gingival-recession-defects-a-randomized-controlled-clinical-study
#4
Angeliki Alexiou, Ioannis Vouros, Georgios Menexes, Antonis Konstantinidis
OBJECTIVE: The purpose of the present study was to compare the clinical efficiency of enamel matrix derivative (EMD) placed under a coronally advanced flap (CAF; test group), to a connective tissue graft (CTG) placed under a CAF (control group), in patients with multiple recession defects. METHOD AND MATERIALS: Twelve patients with multiple Miller's Class I or II gingival recessions in contralateral quadrants of the maxilla were selected. The primary outcome variable was the change in depth of the buccal recession (REC), at 6 months (T6) after surgery...
2017: Quintessence International
https://www.readbyqxmd.com/read/28387703/the-identification-of-the-deformation-stage-of-a-metal-specimen-based-on-acoustic-emission-data-analysis
#5
Shenao Zou, Fengying Yan, Guoan Yang, Wei Sun
The acoustic emission (AE) signals of metal materials have been widely used to identify the deformation stage of a pressure vessel. In this work, Q235 steel samples with different propagation distances and geometrical structures are stretched to get the corresponding acoustic emission signals. Then the obtained acoustic emission signals are de-noised by empirical mode decomposition (EMD), and then decomposed into two different frequency ranges, i.e., one mainly corresponding to metal deformation and the other mainly corresponding to friction signals...
April 7, 2017: Sensors
https://www.readbyqxmd.com/read/28377413/quantifying-the-release-of-biomarkers-of-myocardial-necrosis-from-cardiac-myocytes-and-intact-myocardium
#6
Jack Marjot, Thomas E Kaier, Eva D Martin, Shiney S Reji, O'Neal Copeland, Mohammed Iqbal, Bob Goodson, Sarah Hamren, Sian E Harding, Michael S Marber
BACKGROUND: Myocardial infarction is diagnosed when biomarkers of cardiac necrosis exceed the 99th centile, although guidelines advocate even lower concentrations for early rule-out. We examined how many myocytes and how much myocardium these concentrations represent. We also examined if dietary troponin can confound the rule-out algorithm. METHODS: Individual rat cardiac myocytes, rat myocardium, ovine myocardium, or human myocardium were spiked into 400-μ L aliquots of human serum...
April 4, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28373659/electron-momentum-densities-near-dirac-cones-anisotropic-umklapp-scattering-and-momentum-broadening
#7
N Hiraoka, T Nomura
The relationship between electron momentum densities (EMDs) and a band gap is clarified in momentum space. The interference between wavefunctions via reciprocal lattice vectors, making a band gap in momentum space, causes the scattering of electrons from the first Brillouin zone to the other zones, so-called Umklapp scattering. This leads to the broadening of EMDs. A sharp drop of the EMD in the limit of a zero gap becomes broadened as the gap opens. The broadening is given by a simple quantity, E g /v F , where E g is the gap magnitude and v F the Fermi velocity...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28372399/variational-mode-decomposition-denoising-combined-with-the-hausdorff-distance
#8
Wenping Ma, Shuxin Yin, Chunlei Jiang, Yansheng Zhang
Variational mode decomposition (VMD) is a recently introduced adaptive signal decomposition algorithm with a solid theoretical foundation and good noise robustness compared with empirical mode decomposition (EMD). However, there is still a problem with this algorithm associated with the selection of relevant modes. To solve this problem, this paper proposes a novel signal-filtering method that combines VMD with Hausdorff distance (HD) in the VMD-HD method. A noisy signal is first decomposed into a given number K of band-limited intrinsic mode functions by VMD...
March 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28364677/forecasting-stochastic-neural-network-based-on-financial-empirical-mode-decomposition
#9
Jie Wang, Jun Wang
In an attempt to improve the forecasting accuracy of stock price fluctuations, a new one-step-ahead model is developed in this paper which combines empirical mode decomposition (EMD) with stochastic time strength neural network (STNN). The EMD is a processing technique introduced to extract all the oscillatory modes embedded in a series, and the STNN model is established for considering the weight of occurrence time of the historical data. The linear regression performs the predictive availability of the proposed model, and the effectiveness of EMD-STNN is revealed clearly through comparing the predicted results with the traditional models...
March 18, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28362571/transpyloric-feeding-tube-placement-using-electromagnetic-placement-device-in-children
#10
Margaret Goggans, Sharon Pickard, Alina Nico West, Samir Shah, Dai Kimura
BACKGROUND: Transpyloric feeding tubes (TPT) are often recommended in critically ill children. Blind tube placement, however, can be difficult, be time-consuming, and incur multiple radiation exposures. An electromagnetic device (EMD) is available for confirmation of successful placement of TPTs. We conducted a retrospective cohort study to evaluate the efficacy of an EMD for TPT placement in children and determine its impact on placement success, radiation exposure, confirmation time, and cost for tube placement compared with traditional blind TPT placement...
April 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28359531/an-imbalance-fault-detection-method-based-on-data-normalization-and-emd-for-marine-current-turbines
#11
Milu Zhang, Tianzhen Wang, Tianhao Tang, Mohamed Benbouzid, Demba Diallo
This paper proposes an imbalance fault detection method based on data normalization and Empirical Mode Decomposition (EMD) for variable speed direct-drive Marine Current Turbine (MCT) system. The method is based on the MCT stator current under the condition of wave and turbulence. The goal of this method is to extract blade imbalance fault feature, which is concealed by the supply frequency and the environment noise. First, a Generalized Likelihood Ratio Test (GLRT) detector is developed and the monitoring variable is selected by analyzing the relationship between the variables...
March 27, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28357991/a-new-multivariate-empirical-mode-decomposition-method-for-improving-the-performance-of-ssvep-based-brain-computer-interface
#12
Yi-Feng Chen, Kiran Atal, Shengquan Xie, Quan Liu
OBJECTIVE: Accurate and efficient detection of steady-state visual evoked potentials (SSVEP) in electroencephalogram (EEG) is essential for the related brain-computer interface (BCI) applications. APPROACH: Although the canonical correlation analysis (CCA) has been applied extensively and successfully to SSVEP recognition, the spontaneous EEG activities and artifacts that often occur during data recording can deteriorate the recognition performance. Therefore, it is meaningful to extract a few frequency sub-bands of interest to avoid or reduce the influence of unrelated brain activity and artifacts...
March 30, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28338039/coronally-advanced-flap-combined-with-connective-tissue-graft-treatment-of-choice-for-root-coverage-following-recession
#13
COMMENT
Ed Madeley, Brett Duane
Data sourcesMedline, The Cochrane Database Trials Register, Embase, supplemented by handsearching of five prominent periodontal journals, references from reviewed papers and contact with experts in the field of mucogingival surgery.Study selectionRandomised controlled trials (RCTs) with or without a split-mouth design, on human patients. RCTs had to compare at least two different surgical interventions on clearly specified recession defects, be over six months in duration and have clearly specified clinical measurements regarding root coverage...
March 2017: Evidence-based Dentistry
https://www.readbyqxmd.com/read/28316639/feature-extraction-and-classification-of-ehg-between-pregnancy-and-labour-group-using-hilbert-huang-transform-and-extreme-learning-machine
#14
Lili Chen, Yaru Hao
Preterm birth (PTB) is the leading cause of perinatal mortality and long-term morbidity, which results in significant health and economic problems. The early detection of PTB has great significance for its prevention. The electrohysterogram (EHG) related to uterine contraction is a noninvasive, real-time, and automatic novel technology which can be used to detect, diagnose, or predict PTB. This paper presents a method for feature extraction and classification of EHG between pregnancy and labour group, based on Hilbert-Huang transform (HHT) and extreme learning machine (ELM)...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28314844/abituzumab-targeting-of-alphav-class-integrins-inhibits-prostate-cancer-progression
#15
Yuan Jiang, Jinlu Dai, Zhi Yao, Greg Shelley, Evan T Keller
Integrins that contain an integrin alpha V subunit contribute to multiple functions that promote cancer progression. The goal of this study was to determine if abituzumab (DI17E6, EMD 525797), a humanized monoclonal antibody (mAb) against integrin alpha V impacts, prostate cancer (PCa) progression. To evaluate this, PCa cells were treated with DI17E6 and its effects on proliferation, apoptosis, cell cycle, adhesion, detachment, migration, invasion and phosphorylation of downstream targets, including FAK, Akt and ERK were determined...
March 17, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28304211/furcation-therapy-with-enamel-matrix-derivative-effects-on-the-subgingival-microbiome
#16
Lucas A Queiroz, Renato C V Casarin, Shareef M Dabdoub, Dimitris N Tatakis, Enilson A Sallum, Purnima S Kumar
BACKGROUND: Although enamel matrix derivative (EMD) has been used to promote periodontal regeneration, little is known of its effect on the microbiome. Therefore, this investigation aimed to identify the changes in periodontal microbiome following treatment with EMD using a deep-sequencing approach. METHODS: Thirty-nine patients having mandibular class II buccal furcation defects were randomized to beta-tricalcium-phosphate/hydroxyapatite graft (BONE group), EMD+BONE or EMD alone...
March 17, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28303584/long-term-results-of-periodontal-regenerative-therapy-a-retrospective-practice-based-cohort-study
#17
Frank Bröseler, Christina Tietmann, Ann-Katrin Hinz, Søren Jepsen
AIM: Evaluation of the long-term effectiveness of regenerative treatment of intra-bony defects in periodontal practice. MATERIAL AND METHODS: A total of 1,008 intra-bony defects in 176 patients were analysed after using collagen-added deproteinized bovine bone mineral (DBBMc) with or without collagen membrane (CM) or enamel matrix derivative (EMD). Defects were classified as one- and two-wall and as shallow (≤6 mm), moderate (>6 and <11 mm) and deep (≥11 mm)...
March 16, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28290476/emerin-plays-a-crucial-role-in-nuclear-invagination-and-in-the-nuclear-calcium-transient
#18
Masaya Shimojima, Shinsuke Yuasa, Chikaaki Motoda, Gakuto Yozu, Toshihiro Nagai, Shogo Ito, Mark Lachmann, Shin Kashimura, Makoto Takei, Dai Kusumoto, Akira Kunitomi, Nozomi Hayashiji, Tomohisa Seki, Shugo Tohyama, Hisayuki Hashimoto, Masaki Kodaira, Toru Egashira, Kenshi Hayashi, Chiaki Nakanishi, Kenji Sakata, Masakazu Yamagishi, Keiichi Fukuda
Alteration of the nuclear Ca(2+) transient is an early event in cardiac remodeling. Regulation of the nuclear Ca(2+) transient is partly independent of the cytosolic Ca(2+) transient in cardiomyocytes. One nuclear membrane protein, emerin, is encoded by EMD, and an EMD mutation causes Emery-Dreifuss muscular dystrophy (EDMD). It remains unclear whether emerin is involved in nuclear Ca(2+) homeostasis. The aim of this study is to elucidate the role of emerin in rat cardiomyocytes by means of hypertrophic stimuli and in EDMD induced pluripotent stem (iPS) cell-derived cardiomyocytes in terms of nuclear structure and the Ca(2+) transient...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28282892/detection-of-the-vibration-signal-from-human-vocal-folds-using-a-94-ghz-millimeter-wave-radar
#19
Fuming Chen, Sheng Li, Yang Zhang, Jianqi Wang
The detection of the vibration signal from human vocal folds provides essential information for studying human phonation and diagnosing voice disorders. Doppler radar technology has enabled the noncontact measurement of the human-vocal-fold vibration. However, existing systems must be placed in close proximity to the human throat and detailed information may be lost because of the low operating frequency. In this paper, a long-distance detection method, involving the use of a 94-GHz millimeter-wave radar sensor, is proposed for detecting the vibration signals from human vocal folds...
March 8, 2017: Sensors
https://www.readbyqxmd.com/read/28281367/a-review-of-the-literature-antibiotic-usage-and-its-relevance-to-the-infection-in-periodontal-flaps
#20
Yiying Liu, Dingyu Duan, Yuejiao Xin, Lin Bai, Tianyu Li, Chuwen Li, Yi Xu
OBJECTIVE: This study aimed to investigate the systemic antibiotic usage in the perioperative period of periodontal flaps and its relevance to the infection after surgeries through reviewing the papers of the last decade. MATERIALS AND METHODS: A search was conducted for the studies of randomized clinical trials between 2005 and 2014 that reported periodontal flaps in chronic periodontitis patients. Data were extracted and the rate of the systemic antibiotic use, the infection rate after surgeries and the number needed to treat (NNT) to prevent one infected case were calculated...
March 10, 2017: Acta Odontologica Scandinavica
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