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https://www.readbyqxmd.com/read/29136891/detection-and-quantification-of-extra-virgin-olive-oil-adulteration-by-means-of-autofluorescence-excitation-emission-profiles-combined-with-multi-way-classification
#1
Isabel Durán Merás, Jaime Domínguez Manzano, Diego Airado Rodríguez, Arsenio Muñoz de la Peña
Within olive oils, extra virgin olive oil is the highest quality and, in consequence, the most expensive one. Because of that, it is common that some merchants attempt to take economic advantage by mixing it up with other less expensive oils, like olive oil or olive pomace oil. In consequence, the characterization and authentication of extra virgin olive oils is a subject of great interest, both for industry and consumers. This paper reports the potential of front-face total fluorescence spectroscopy combined with second-order chemometric methods for the detection of extra virgin olive oils adulteration with other olive oils...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29135894/deferoxamine-preconditioning-of-irradiated-tissue-improves-perfusion-and-fat-graft-retention
#2
John Flacco, Natalie Chung, Charles P Blackshear, Dre Irizarry, Arash Momeni, Gordon K Lee, Dung Nguyen, Geoffrey C Gurtner, Michael T Longaker, Derrick C Wan
BACKGROUND: Radiation therapy is a mainstay in the treatment of many malignancies, but collateral damage to surrounding tissue, with resultant hypovascularity, fibrosis, and atrophy, can be difficult to reconstruct. Fat grafting has been shown to improve the quality of irradiated skin, but volume retention of the graft is significantly decreased. Deferoxamine (DFO) is a FDA-approved iron-chelating medication for acute iron intoxication and chronic iron overload that has also been shown to increase angiogenesis...
November 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29132005/discriminant-analysis-as-a-decision-making-tool-for-geochemically-fingerprinting-sources-of-groundwater-salinity
#3
Nathaniel P Chien, Laura K Lautz
Concern over contamination of groundwater resources in areas impacted by anthropogenic activities has led to an increasing number of baseline groundwater quality surveys intended to provide context for interpreting water quality data. Flexible screening tools that can parse through these large, regional datasets to identify spatial or temporal changes in water quality are becoming more important to groundwater scientists. One such tool, developed from previous work by the authors, makes use of linear discriminant analysis (LDA) to identify the most probable source of chloride salinity in groundwater samples based on their geochemical fingerprints...
November 10, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29131365/gut-microbiota-and-body-composition-in-anorexia-nervosa-inpatients-in-comparison-to-athletes-overweight-obese-and-normal-weight-controls
#4
Sabrina Mörkl, Sonja Lackner, Wolfram Müller, Gregor Gorkiewicz, Karl Kashofer, Andreas Oberascher, Annamaria Painold, Anna Holl, Peter Holzer, Andreas Meinitzer, Harald Mangge, Sandra Holasek
OBJECTIVES: Anorexia nervosa (AN) is a heterogeneous eating disorder associated with alterations of body structure and the gut microbiome. We aimed to investigate the gut microbiota composition of a large female cohort including different BMI groups and activity levels along with body composition parameters. METHOD: 106 female participants were included in this cross-sectional study: AN patients (n = 18), athletes (n = 20), normal weight (n = 26), overweight (n = 22), and obese women (n = 20)...
November 13, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29129973/are-the-symptoms-of-an-nsaid-induced-ulcer-truly-milder-than-those-of-an-ordinary-ulcer
#5
Toshihiko Tomita, Sumire Mori, Katsuyuki Tozawa, Eitatsu Arai, Nobuo Tano, Hideo Oka, Yongmin Kim, Takashi Abe, Yoshio Ohda, Tadayuki Oshima, Hirokazu Fukui, Jiro Watari, Hiroto Miwa
Objective: The percentage of patients with nonsteroidal anti-inflammatory drugs (NSAIDs) and low-dose aspirin- (LDA-) induced ulcers who complain of gastrointestinal symptoms has generally been considered to be low. The aim of this study was to examine and compare the symptoms and quality of life (QOL) at peptic ulcer onset. Methods: This study involved 200 patients who were confirmed by endoscopy to be in the acute stage of gastroduodenal ulcer (A1-H1). Patients completed a self-administered questionnaire (Global Overall Symptom score and SF-8) at ulcer onset, and data were compared between NSAIDs/LDA ulcers and non-NSAIDs/LDA ulcers...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/29117768/wavelet-based-feature-extraction-for-classification-of-epileptic-seizure-eeg-signal
#6
A Sharmila, P Mahalakshmi
Electroencephalogram (EEG) signal-processing techniques are the prominent role in the detection and prediction of epileptic seizures. The detection of epileptic activity is cumbersome and needs a detailed analysis of the EEG data. Therefore, an efficient method for classifying EEG data is required. In this work, a constructive pattern recognition strategy for analysing EEG data as normal and epileptic seizure has been proposed. With this strategy, the signals were decomposed into frequency sub-bands using discrete wavelet transform (DWT)...
November 9, 2017: Journal of Medical Engineering & Technology
https://www.readbyqxmd.com/read/29117688/mnnio3-revisited-with-modern-theoretical-and-experimental-methods
#7
Allison L Dzubak, Chandrima Mitra, Michael Chance, Stephen Kuhn, Gerald E Jellison, Athena S Sefat, Jaron T Krogel, Fernando A Reboredo
MnNiO3 is a strongly correlated transition metal oxide that has recently been investigated theoretically for its potential application as an oxygen-evolution photocatalyst. However, there is no experimental report on critical quantities such as the band gap or bulk modulus. Recent theoretical predictions with standard functionals such as LDA+U and HSE show large discrepancies in the band gaps (about 1.23 eV), depending on the nature of the functional used. Hence there is clearly a need for an accurate quantitative prediction of the band gap to gauge its utility as a photocatalyst...
November 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29113069/characterization-and-differentiation-of-petroleum-derived-products-by-e-nose-fingerprints
#8
Marta Ferreiro-González, Gerardo F Barbero, Miguel Palma, Jesús Ayuso, José A Álvarez, Carmelo G Barroso
Characterization of petroleum-derived products is an area of continuing importance in environmental science, mainly related to fuel spills. In this study, a non-separative analytical method based on E-Nose (Electronic Nose) is presented as a rapid alternative for the characterization of several different petroleum-derived products including gasoline, diesel, aromatic solvents, and ethanol samples, which were poured onto different surfaces (wood, cork, and cotton). The working conditions about the headspace generation were 145 °C and 10 min...
November 5, 2017: Sensors
https://www.readbyqxmd.com/read/29112899/authentication-of-animal-origin-of-heparin-and-low-molecular-weight-heparin-including-ovine-porcine-and-bovine-species-using-1d-nmr-spectroscopy-and-chemometric-tools
#9
Yulia B Monakhova, Bernd W K Diehl, Jawed Fareed
High resolution (600MHz) nuclear magnetic resonance (NMR) spectroscopy is used to distinguish heparin and low-molecular weight heparins (LMWHs) produced from porcine, bovine and ovine mucosal tissues as well as their blends. For multivariate analysis several statistical methods such as principal component analysis (PCA), factor discriminant analysis (FDA), partial least squares - discriminant analysis (PLS-DA), linear discriminant analysis (LDA) were utilized for the modeling of NMR data of more than 100 authentic samples...
October 27, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29110491/deep-learning-accurately-predicts-estrogen-receptor-status-in-breast-cancer-metabolomics-data
#10
Fadhl M Alkawaa, Kumardeep Chaudhary, Lana X Garmire
Metabolomics holds the promise as a new technology to diagnose highly heterogeneous diseases. Conventionally, metabolomics data analysis for diagnosis is done using various statistical and machine learning based classification methods. However, it remains unknown if the deep neural network, a class of increasingly popular machine learning methods, is suitable to classify metabolomics data. Here we use a cohort of 271 breast cancer tissues, 204 positive estrogen receptor (ER+) and 67 negative estrogen receptor (ER-), to test the accuracies of autoencoder, a deep learning (DL) framework, as well as six widely used machine learning models, namely Random Forest (RF), Support Vector Machines (SVM), Recursive Partitioning and Regression Trees (RPART), Linear Discriminant Analysis (LDA), Prediction Analysis for Microarrays (PAM), and Generalized Boosted Models (GBM)...
November 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/29102157/the-ultrasound-clinical-arthritis-activity-us-clara-index-properties-of-a-new-composite-disease-activity-index-for-rheumatoid-arthritis
#11
Fausto Salaffi, Marco Di Carlo, Florenzo Iannone, Anna Laura Fedele, Oscar Massimiliano Epis, Raffaele Pellerito, Rosario Foti, Giuseppe Passiu, Leonardo Punzi, Federica Furini, Piercarlo Sarzi-Puttini, Antonio Carletto, Elisa Gremese, Giovanni Lapadula, Gianfranco Ferraccioli
OBJECTIVE: To assess validity, responsiveness and interpretability of the UltraSound-CLinical ARthritis Activity (US-CLARA) index in patients with rheumatoid arthritis (RA). METHODS: In this longitudinal study were involved RA patients starting treatment with abatacept. Subjects were followed along three visits in the first 6 months of therapy and underwent a comprehensive clinimetric evaluation. Validity was explored correlating the baseline scores and the cumulative inflammatory burden of the US-CLARA with the other composite indices applied...
September 28, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29100309/evaluating-oral-epithelial-dysplasia-classification-system-by-near-infrared-raman-spectroscopy
#12
Bo Li, Zhi-Yu Gu, Kai-Xiao Yan, Zhi-Ning Wen, Zhi-He Zhao, Long-Jiang Li, Yi Li
Until now, the classification system of oral epithelial dysplasia is still based on the architectural and cytological changes, which relies on the observation of pathologists and is relatively subjective. The purpose of present research was to discriminate the oral dysplasia by the near-infrared Raman spectroscope, in order to evaluate the classification system. We collected Raman spectra of normal mucosa, oral squamous cell carcinoma (OSCC) and dysplasia by near-infrared Raman spectroscope. The biochemical variations between different stages were analyzed by the characteristic peaks in the subtracted mean spectra...
September 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29100117/csp-tsm-optimizing-the-performance-of-riemannian-tangent-space-mapping-using-common-spatial-pattern-for-mi-bci
#13
Shiu Kumar, Kabir Mamun, Alok Sharma
BACKGROUND: Classification of electroencephalography (EEG) signals for motor imagery based brain computer interface (MI-BCI) is an exigent task and common spatial pattern (CSP) has been extensively explored for this purpose. In this work, we focused on developing a new framework for classification of EEG signals for MI-BCI. METHOD: We propose a single band CSP framework for MI-BCI that utilizes the concept of tangent space mapping (TSM) in the manifold of covariance matrices...
October 24, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29099250/comparison-of-omentopexy-versus-pyloro-omentopexy-for-treatment-of-left-abomasal-displacement-in-dairy-cows-87-cases-2001-2005
#14
Aubrey N Baird, Ahmed Mohamed, George E Moore, Jan F Hawkins
OBJECTIVE To evaluate reproductive performance and productive longevity of dairy cows treated for left displaced abomasum (LDA) with 1 of 2 surgical techniques (omentopexy vs pyloro-omentopexy). DESIGN Retrospective case series. ANIMALS 87 Holstein cows that underwent omentopexy or pyloro-omentopexy for LDA during a 5-year period. PROCEDURES For each cow with LDA, the most recent date of calving, age at time of surgery, and surgical procedure were recorded. Dairy records of cows treated for LDA in the 5-year period were reviewed to determine their reproductive performance...
November 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29090688/protein-sensing-and-discrimination-using-highly-functionalised-ruthenium-ii-tris-bipyridyl-protein-surface-mimetics-in-an-array-format
#15
Sarah H Hewitt, Andrew J Wilson
Ruthenium(ii) tris(bipyridyl) protein surface mimetics are used in an array format to sense and discriminate proteins including therapeutically relevant targets, hDM2 and MCL-1, using linear discriminant analysis (LDA).
November 1, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29089621/the-non-invasive-exfoliated-transcriptome-exfoliome-reflects-the-tissue-level-transcriptome-in-a-mouse-model-of-nsaid-enteropathy
#16
Canaan M Whitfield-Cargile, Noah D Cohen, Kejun He, Ivan Ivanov, Jennifer S Goldsby, Ana Chamoun-Emanuelli, Brad R Weeks, Laurie A Davidson, Robert S Chapkin
Non-steroidal anti-inflammatory drugs (NSAIDs) are among the most frequently used classes of medications in the world, yet they induce an enteropathy that is associated with high morbidity and mortality. A major limitation to better understanding the pathophysiology and diagnosis of this enteropathy is the difficulty of obtaining information about the primary site of injury, namely the distal small intestine. We investigated the utility of using mRNA from exfoliated cells in stool as a means to surveil the distal small intestine in a murine model of NSAID enteropathy...
October 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29084158/ratiometric-decoding-of-pheromones-for-a-biomimetic-infochemical-communication-system
#17
Guangfen Wei, Sanju Thomas, Marina Cole, Zoltán Rácz, Julian W Gardner
Biosynthetic infochemical communication is an emerging scientific field employing molecular compounds for information transmission, labelling, and biochemical interfacing; having potential application in diverse areas ranging from pest management to group coordination of swarming robots. Our communication system comprises a chemoemitter module that encodes information by producing volatile pheromone components and a chemoreceiver module that decodes the transmitted ratiometric information via polymer-coated piezoelectric Surface Acoustic Wave Resonator (SAWR) sensors...
October 30, 2017: Sensors
https://www.readbyqxmd.com/read/29083504/the-circulating-microbiome-signature-and-inferred-functional-metagenomics-in-alcoholic-hepatitis
#18
Puneet Puri, Suthat Liangpunsakul, Jeffrey E Christensen, Vijay H Shah, Patrick S Kamath, Gregory J Gores, Susan Walker, Megan Comerford, Barry Katz, Andrew Borst, Qigui Yu, Divya P Kumar, Faridoddin Mirshahi, Svetlana Radaeva, Naga P Chalasani, David W Crabb, Arun J Sanyal
Intestinal dysbiosis is implicated in alcoholic hepatitis (AH). However, changes in the circulating microbiome, its association with the presence and severity of AH and its functional relevance in AH is unknown. Qualitative and quantitative assessment of changes in the circulating microbiome were performed by sequencing bacterial DNA in subjects with moderate (n=18) or severe AH (n=19). These data were compared to heavy drinking controls (HDC) without obvious liver disease (n=19) and non-alcohol consuming controls (NAC, n=20)...
October 30, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29082583/the-risk-of-ischaemic-stroke-in-primary-aps-patients-a-prospective-study
#19
Massimo Radin, Karen Schreiber, Irene Cecchi, Dario Roccatello, Maria José Cuadrado, Savino Sciascia
BACKGROUND: The most common neurological manifestation of APS is ischaemic stroke. Identifying patients with APS at high risk for developing any thrombotic event remains a major challenge. In this study, we aimed to identify predictive factors of ischaemic stroke in a cohort of primary APS (PAPS) patients who presented with new onset symptoms suggestive of acute stroke. METHODS: This prospective multicenter study included 36 consecutive PAPS patients who presented with new onset symptoms suggestive of an acute stroke...
October 30, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/29080861/ideal-target-for-psoriatic-arthritis-comparison-of-remission-and-low-disease-activity-states-in-a-real-life-cohort
#20
Leonieke J J van Mens, Marleen G H van de Sande, Arno W R van Kuijk, Dominique Baeten, Laura C Coates
BACKGROUND: Psoriatic arthritis (PsA) recommendations state that the target of treatment should be remission or low disease activity (LDA). We used a real-life dataset to compare different potential targets. METHODS: 250 patients with PsA considered in an acceptable disease state according to their rheumatologist were included. Targets for remission were the Disease Activity Index for Psoriatic Arthritis (DAPSA) and clinical DAPSA (cDAPSA) remission (≤4), very low disease activity (VLDA) and Psoriatic Arthritis Disease Activity Score ≤1...
October 28, 2017: Annals of the Rheumatic Diseases
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