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https://www.readbyqxmd.com/read/29053454/a-dataset-for-camera-independent-color-constancy
#1
Caglar Aytekin, Jarno Nikkanen, Moncef Gabbouj
In this paper, we provide a novel dataset designed for camera independent color constancy research. Camera independence corresponds to the robustness of an algorithm's performance when run on images of the same scene taken by different cameras. Accordingly, the images in our database correspond to several lab and field scenes each of which is captured by three different cameras with minimal registration errors. The lab scenes are also captured under five different illuminations. The spectral responses of cameras and the spectral power distributions of the lab light sources are also provided, as they may prove beneficial for training future algorithms to achieve color constancy...
October 17, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29053003/detoxification-of-cancerogenic-compounds-by-lactic-acid-bacteria-strains
#2
Zhao Lili, Wei Junyan, Zhao Hongfei, Zhu Baoqing, Zhang Bolin
Carcinogens in food are an important issue that threat people's health right now. Lactic acid bacteria (LAB) strains as well-known probiotics have shown numerous perspectives in being used as a good food additive to confront cancerogenic compounds in recent years. Some LAB strains can remove cancerogenic compounds from medium environment via direct physical binding and avoid re-pollution of poisonous secondary metabolites which are generated from degradation of cancerogenic compounds. This article presents a whole overview of the physical-binding of LAB strains to such common cancerogenic compounds existed in food and feed environments as mycotoxins, polycyclic aromatic hydrocarbons (PAHs), heterocyclic amines (HAs) and pthalic acid esters (PAEs)...
October 20, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29049565/a-low-cost-bioprosthetic-semilunar-valve-for-research-disease-modelling-and-surgical-training-applications
#3
Benoit Rosa, Zurab Machaidze, Borami Shin, Sunil Manjila, David W Brown, Christopher W Baird, John E Mayer, Pierre E Dupont
OBJECTIVES: This paper provides detailed instructions for constructing low-cost bioprosthetic semilunar valves for animal research and clinical training. This work fills an important gap between existing simulator training valves and clinical valves by providing fully functioning designs that can be employed in ex vivo and in vivo experiments and can also be modified to model valvular disease. METHODS: Valves are constructed in 4 steps consisting of creating a metal frame, covering it with fabric and attaching a suture ring and leaflets...
August 2, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29046720/a-new-method-to-evaluate-temperature-vs-ph-activity-profiles-for-biotechnological-relevant-enzymes
#4
J Herlet, P Kornberger, B Roessler, J Glanz, W H Schwarz, W Liebl, V V Zverlov
BACKGROUND: Glycoside hydrolases are important for various industrial and scientific applications. Determination of their temperature as well as pH optima and range is crucial to evaluate whether an enzyme is suitable for application in a biotechnological process. These basic characteristics of enzymes are generally determined by two separate measurements. However, these lead to a two-dimensional assessment of the pH range at one temperature (and vice versa) and do not allow prediction of the relative enzymatic performance at any pH/temperature combination of interest...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/29038738/a-case-of-infective-endocarditis-and-spinal-epidural-abscess-caused-by-streptococcus-mitis-bacteremia
#5
Victoria S Byrd, Attila S Nemeth
A 57-year-old man presented with abdominal pain, hematemesis, and melena. He reported taking high-dose ibuprofen for back pain and drinking several 24-ounce beers daily. Examination was remarkable for icteric sclera, poor dentition, tachycardia, and crescendo-decrescendo murmur at right upper sternal border, radiating to the carotids. Labs revealed leukocytosis, anemia, thrombocytopenia, and elevated liver function tests and INR. Endoscopy demonstrated antral ulcers, duodenitis, and esophagitis. Blood cultures were obtained and broad-spectrum antibiotics started; cultures later grew Streptococcus mitis, and antibiotic coverage was narrowed...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/29037905/the-inter-observer-reading-variability-in-anti-nuclear-antibodies-indirect-ana-immunofluorescence-test-a-multicenter-evaluation-and-a-review-of-the-literature
#6
REVIEW
A Rigon, M Infantino, M Merone, G Iannello, A Tincani, I Cavazzana, N Caraballese, A Radice, M Manfredi, P Soda, A Afeltra
Recently there has been an increase demand for computer-aided diagnosis (CAD) tools to sup- port clinicians in the field of Indirect ImmunoFluorescence (IIF), as the novel digital imaging reading approach can help to overcome the reader subjectivity. Nevertheless, a large multicenter evaluation of the inter-observer reading variability in this field is still missing. This work fills this gap as we evaluated 556 consecutive samples, for a total of 1679 images, collected in three laboratories with IIF expertise using HEp-2 cell substrate (MBL) at 1:80 screening dilution ac- cording to conventional procedures...
October 13, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29036895/low-cost-lab-on-chip-for-the-colorimetric-detection-of-nitrate-in-mineral-water-products
#7
Mohammad F Khanfar, Wisam Al-Faqheri, Ala'aldeen Al-Halhouli
The diagnostics of health status and the quality of drinking water are among the most important United Nations sustainable development goals. However, in certain areas, wars and instability have left millions of people setting in refugee camps and dangerous regions where infrastructures are lacking and rapid diagnostics of water quality and medical status are critical. In this work, microfluidic testing chips and photometric setups are developed in cheap and portable way to detect nitrate concentrations in water...
October 14, 2017: Sensors
https://www.readbyqxmd.com/read/29036597/faucet-streaming-de-novo-assembly-graph-construction
#8
Roye Rozov, Gil Goldshlager, Eran Halperin, Ron Shamir
Motivation: We present Faucet, a two-pass streaming algorithm for assembly graph construction. Faucet builds an assembly graph incrementally as each read is processed. Thus, reads need not be stored locally, as they can be processed while downloading data and then discarded. We demonstrate this functionality by performing streaming graph assembly of publicly available data, and observe that the ratio of disk use to raw data size decreases as coverage is increased. Results: Faucet pairs the de Bruijn graph obtained from the reads with additional meta-data derived from them...
July 24, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29033779/a-patient-with-nafcillin-associated-drug-induced-liver-failure
#9
Qin Rao, Isaiah Schuster, Talal Seoud, Kevin Zarrabi, Nirvani Goolsarran
Nafcillin-induced acute liver injury is a rare and potentially fatal complication that has been known since the 1960s but inadequately studied. At this time, the only proven treatment is early discontinuation of the drug. Because of the high prevalence of nafcillin class antibiotic use in the United States, it is important for clinicians to have a high clinical suspicion for this diagnosis. We present a case of liver failure attributable to nafcillin use in a 68-year-old male with a history methicillin-sensitive Staphylococcus and L3/L4 osteomyelitis...
September 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/29032876/clinical-value-of-triage-lactate-in-risk-stratifying-trauma-patients-using-interval-likelihood-ratios
#10
Bonny J Baron, Andrew Nguyen, Dimitre Stefanov, Amit Shetty, Shahriar Zehtabchi
Emergency physicians face the challenge of rapidly identifying high-risk trauma patients. Lactate (LAC) is widely used as a surrogate of tissue hypoperfusion. However, clinically important values for LAC as a predictor of mortality are not well defined. OBJECTIVES: 1. To assess the value of triage LAC in predicting mortality after trauma. 2. To compute interval likelihood ratios (LR) for LAC. METHODS: Retrospective chart review of trauma patients with a significant injury mechanism that warranted labs at an urban trauma center...
October 7, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29032507/a-novel-lab-on-a-chip-platform-for-spheroid-metabolism-monitoring
#11
Frank Alexander, Sebastian Eggert, Joachim Wiest
Sensor-based cellular microphysiometry is a technique that allows non-invasive, label-free, real-time monitoring of living cells that can greatly improve the predictability of toxicology testing by removing the influence of biochemical labels. In this work, the Intelligent Mobile Lab for In Vitro Diagnostics (IMOLA-IVD) was utilized to perform cellular microphysiometry on 3D multicellular spheroids. Using a commercial 3D printer, 3 × 3 microwell arrays were fabricated to maintain nine previously cultured HepG2 spheroids on a single BioChip...
October 14, 2017: Cytotechnology
https://www.readbyqxmd.com/read/29032304/heterocyclic-homoprostanoid-derivative-attenuates-monoarthritis-in-rats-an-in-vitro-and-in-vivo-preclinical-paradigm
#12
Jayesh Mudgal, S A Manohara Reddy, Geetha Mathew, Anoop Kishore, C Mallikarjuna Rao, Gopalan K Nampurath
From our lab, among the nineteen heterocyclic homoprostanoids (HHPs), three derivatives (compounds 3, 3b and 3c) exerted antioxidant and anti-inflammatory activity. Present study is an extension of the earlier work, and, is designed to establish their therapeutic potential in monoarthritis in rats. In addition, their possible mechanism of action would be investigated. A battery of in vitro tests such as lipopolysaccharide (LPS)-induced nitrite (NO)/reactive oxygen species (ROS) and NO/interleukin (IL)-6 generation in murine macrophages and whole blood (WhB), respectively were conducted...
October 12, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29031157/a-european-multi-centre-external-quality-assessment-eqa-study-on-phenotypic-and-genotypic-methods-used-for-herpes-simplex-virus-hsv-drug-resistance-testing
#13
Baharak Afshar, David F Bibby, Renata Piorkowska, Natasha Ohemeng-Kumi, Robert Snoeck, Graciela Andrei, Sarah Gillemot, Florence Morfin, Emilie Frobert, Sonia Burrel, David Boutolleau, Brendan Crowley, Jean L Mbisa
BACKGROUND: Herpes Simplex Virus (HSV) drug resistance is a significant public health concern among immunocompromised individuals. Phenotypic assays are considered the gold standard method for detecting HSV drug resistance. However, plaque reduction assays (PRAs) are technically demanding, often with long turnaround times of up to four weeks. In contrast, genotypic tests can be performed within a few days. OBJECTIVES: The development and coordination of the first European External Quality Assessment (EQA) study to evaluate phenotypic and genotypic methods used for HSV drug resistance testing in specialised reference laboratories...
October 6, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29030182/biosynthesis-of-dextran-by-weissella-confusa-and-its-in-vitro-functional-characteristics
#14
Irina Rosca, Anca Roxana Petrovici, Dragos Peptanariu, Alina Nicolescu, Gianina Dodi, Mihaela Avadanei, Iuliu Cristian Ivanov, Andra Cristina Bostanaru, Mihai Mares, Diana Ciolacu
The aim of this study was to monitor the influence of the fermentation conditions on the exopolysaccharides (EPS) biosynthesis. For this, different culture media compositions were tested on an isolated lactic acid bacteria (LAB) strain, identified by 16S rDNA sequence as being Weissella confusa. It was proved that this bacterial strain culture in MRS medium supplemented with 80g/L sucrose and dissolved in UHT milk produced up to 25.2g/L of freeze-dried EPS, in static conditions, after 48hours of fermentative process...
October 10, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29028926/structure-based-prediction-of-protein-peptide-binding-regions-using-random-forest
#15
Ghazaleh Taherzadeh, Yaoqi Zhou, Alan Wee-Chung Liew, Yuedong Yang
Motivation: Protein-peptide interactions are one of the most important biological interactions and play crucial role in many diseases including cancer. Therefore, knowledge of these interactions provides invaluable insights into all cellular processes, functional mechanisms, and drug discovery. Protein-peptide interactions can be analyzed by studying the structures of protein-peptide complexes. However, only a small portion has known complex structures and experimental determination of protein-peptide interaction is costly and inefficient...
September 26, 2017: Bioinformatics
https://www.readbyqxmd.com/read/29024365/non-target-site-sdhi-resistance-is-present-as-standing-genetic-variation-in-field-populations-of-zymoseptoria-tritici
#16
Masao Yamashita, Bart Fraaije
BACKGROUND: A new generation of more active succinate dehydrogenase (Sdh) inhibitors (SDHIs) is currently widely used to control Septoria leaf blotch in NW-Europe. Detailed studies were conducted on Zymoseptoria tritici field isolates with reduced sensitivity to fluopyram and isofetamid; SDHIs which have only just or not been introduced for cereal disease control, respectively. RESULTS: Strong cross-resistance between fluopyram and isofetamid, but not with other SDHIs, was confirmed through sensitivity tests using laboratory mutants and field isolates with and without Sdh mutations...
October 10, 2017: Pest Management Science
https://www.readbyqxmd.com/read/29024300/accounting-for-the-role-of-hematocrit-in-between-subject-variations-of-mri-derived-baseline-cerebral-hemodynamic-parameters-and-functional-bold-responses
#17
Feng Xu, Wenbo Li, Peiying Liu, Jun Hua, John J Strouse, James J Pekar, Hanzhang Lu, Peter C M van Zijl, Qin Qin
Baseline hematocrit fraction (Hct) is a determinant for baseline cerebral blood flow (CBF) and between-subject variation of Hct thus causes variation in task-based BOLD fMRI signal changes. We first verified in healthy volunteers (n = 12) that Hct values can be derived reliably from venous blood T1 values by comparison with the conventional lab test. Together with CBF measured using phase-contrast MRI, this noninvasive estimation of Hct, instead of using a population-averaged Hct value, enabled more individual determination of oxygen delivery (DO2 ), oxygen extraction fraction (OEF), and cerebral metabolic rate of oxygen (CMRO2 )...
October 11, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29023562/efficacy-of-chemical-disinfectants-for-the-containment-of-the-salamander-chytrid-fungus-batrachochytrium-salamandrivorans
#18
Pascale Van Rooij, Frank Pasmans, Yanaika Coen, An Martel
The recently emerged chytrid fungus Batrachochytrium salamandrivorans (Bsal) causes European salamander declines. Proper hygiene protocols including disinfection procedures are crucial to prevent disease transmission. Here, the efficacy of chemical disinfectants in killing Bsal was evaluated. At all tested conditions, Biocidal®, Chloramine-T®, Dettol medical®, Disolol®, ethanol, F10®, Hibiscrub®, potassium permanganate, Safe4®, sodium hypochlorite, and Virkon S®, were effective at killing Bsal. Concentrations of 5% sodium chloride or lower, 0...
2017: PloS One
https://www.readbyqxmd.com/read/29022683/national-laboratory-surveillance-of-influenza-in-macedonia-during-four-seasons
#19
Golubinka Bosevska, Vladimir Mikik, Irena Kondova Topuzovska, Nikola Panovski
OBJECTIVE: The aim of the study is to comprehend results of the influenza lab surveillance system in the Republic of Macedonia after the 2009 pandemic and to determine the main characteristics of four consecutive epidemic seasons (from 2010/2011 until 2013/2014). METHODS: As part of the universal surveillance system, nasal and throat specimens were collected from patients. After extraction of RNA, the CDC real-time RT-PCR assays for the detection of influenza types and subtypes were performed...
September 2017: Central European Journal of Public Health
https://www.readbyqxmd.com/read/29021558/cognition-in-the-field-comparison-of-reversal-learning-performance-in-captive-and-wild-passerines
#20
M Cauchoix, E Hermer, A S Chaine, J Morand-Ferron
Animal cognitive abilities have traditionally been studied in the lab, but studying cognition in nature could provide several benefits including reduced stress and reduced impact on life-history traits. However, it is not yet clear to what extent cognitive abilities can be properly measured in the wild. Here we present the first comparison of the cognitive performance of individuals from the same population, assessed using an identical test, but in contrasting contexts: in the wild vs. in controlled captive conditions...
October 11, 2017: Scientific Reports
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