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https://www.readbyqxmd.com/read/29149747/analysis-of-effect-of-particles-on-cake-layer-compressibility-during-ultrafiltration-of-upflow-biological-activated-carbon-effluent
#1
Lu Ao, Wenjun Liu, Minglu Zhang, Xiaomao Wang
Three different hollow-fibre ultrafiltration (UF) membranes were applied to treat upflow biological activated carbon (UBAC) effluent to determine the characteristics of membrane biofouling by microorganisms and particles. At the beginning of filtration, the cake layer formed on the membrane was loose and highly compressible, and the trans-membrane pressure (TMP) rapidly increased. When compressed to a certain extent, cake layer with low compressibility was formed by the accumulated particles and resulted in slower TMP increment...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149739/removal-of-tio2-nanoparticles-from-water-by-low-pressure-pilot-plant-filtration
#2
Josune Olabarrieta, Oihane Monzón, Yolanda Belaustegui, Jon-Iñaki Alvarez, Saioa Zorita
Rising use of nanoparticles in manufacturing as well as in commercial products bring issues related to environmental release and human exposure. A large amount of TiO2 nanoparticles will eventually reach wastewater treatment plants. Low pressure membrane filtration has been suggested as a feasible treatment of water streams. This study investigated first at laboratory scale the influence of: i) membrane material, ii) pore size and iii) water chemistry on nTiO2 removal. TiO2 retention was governed by the cake layer formation mechanism and significant retention of nanoparticles was observed even for filters having considerably larger pores than nTiO2...
November 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29149735/carbamazepine-lamotrigine-levetiracetam-and-valproic-acid-in-dried-blood-spots-with-liquid-chromatography-tandem-mass-spectrometry-method-development-and-validation
#3
Camilla Linder, Anna Hansson, Sara Sadek, Lars L Gustafsson, Anton Pohanka
Monitoring of antiepileptic drugs in children with epilepsy require multiple visits at a clinic for blood collection. Dried blood spot sampling is an alternative way of collection, performed at home by self-collection and can save time and costs for patients and family members. The aim was to develop and validate an LC-MS/MS dried blood spot method for carbamazepine, lamotrigine, levetiracetam and valproic acid with the requirements of using standard equipment and material in a routine laboratory setting. Whatman-903 filter paper was utilized, and discs were punched into a 96 well plate with an automated puncher and barcode reading...
November 4, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29149695/rheo-optical-near-infrared-nir-spectroscopy-study-of-partially-miscible-polymer-blend-of-polymethyl-methacrylate-pmma-and-polyethylene-glycol-peg
#4
Hideyuki Shinzawa, Junji Mizukado
Tensile deformations of a partially miscible blend of polymethyl methacrylate (PMMA) and polyethylene glycol (PEG) is studied by a rheo-optical characterization near-infrared (NIR) technique to probe deformation behavior during tensile deformation. Sets of NIR spectra of the polymer samples were collected by using an acousto-optic tunable filter (AOTF) NIR spectrometer coupled with a tensile testing machine as an excitation device. While deformations of the samples were readily captured as strain-dependent NIR spectra, the entire feature of the spectra was overwhelmed with the baseline fluctuation induced by the decrease in the sample thickness and subsequent change in the light scattering...
November 11, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29149685/simultaneous-drug-identification-in-urine-of-sexual-assault-victims-by-using-liquid-chromatography-tandem-mass-spectrometry
#5
Hei Hwa Lee, Suen Chi Chen, Jong Feng Lee, Hsin Yu Lin, Bai Hsiun Chen
According to domestic and international epidemiological investigation, the proportion of substance involved sexual assault has the trend of ascent. In the past, laboratory methods that investigated urine sample of the sexual assault victims was to screen with enzyme immunoassay and then confirmed with mass spectrometry. The objective of the study is to simultaneously identify abused drugs in 126 decoded urine samples of sexual assault victims by liquid chromatography tandem mass spectrometry. The instrument was operated in multiple-reaction monitoring with an electro-spray positive ionization mode...
November 11, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29149672/the-application-of-bacteriophages-as-novel-indicators-of-viral-pathogens-in-wastewater-treatment-systems
#6
Edgard Dias, James Ebdon, Huw Taylor
Many wastewater treatment technologies have been shown to remove bacterial pathogens more effectively than viral pathogens and, in aquatic environments, levels of traditional faecal indicator bacteria (FIB) do not appear to correlate consistently with levels of human viral pathogens. There is, therefore, a need for novel viral indicators of faecal pollution and surrogates of viral pathogens, especially given the increasing importance of indirect and direct wastewater reuse. Potential candidates include bacteriophages (phages) and the study described here sought to elucidate the relationship between three groups of phages (somatic coliphages (SOMPH), F-RNA coliphages (F-RNAPH) and human-specific phages infecting B...
November 9, 2017: Water Research
https://www.readbyqxmd.com/read/29149445/the-influences-of-separators-on-capacitive-deionization-systems-in-the-cycle-of-adsorption-and-desorption
#7
Qihan Yao, Zhou Shi, Qingqing Liu, Zhengyang Gu, Ruihuan Ning
This research focused on the influence of different separator compartments on the performance of capacitive deionization (CDI) cells in terms of brackish water treatment. For comparison, different separators including filter paper(FP), carbon nanotube (CNT), and stainless steel fiber (SSF) on deionization and desorption rate of salt were examined. The best performance was obtained when the CNT separator was packed, followed by SSF and FP. Reducing the cell voltage from 1.2 to 0.4 V decreased the salt removal and electrode regeneration rate of SSF-CDI...
November 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29149349/social-exclusion-weakens-storage-capacity-and-attentional-filtering-ability-in-visual-working-memory
#8
Mengsi Xu, Senqing Qi, Zhiai Li, Liuting Diao, Lingxia Fan, Lijie Zhang, Dong Yang
Social exclusion has been found to impair visual working memory (WM), while the underlying neural processes are currently unclear. Using two experiments, we tested whether the poor WM performance caused by exclusion was due to reduced storage capacity, impaired attentional filtering ability, or both. The Cyberball game was used to manipulate social exclusion. Seventy-four female participants performed WM tasks while event-related potentials were recorded. In Experiment 1, participants were made to remember the orientations of red rectangles while ignoring salient green rectangles...
November 15, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/29149206/automatic-structural-scene-digitalization
#9
Rui Tang, Yuhan Wang, Darren Cosker, Wenbin Li
In this paper, we present an automatic system for the analysis and labeling of structural scenes, floor plan drawings in Computer-aided Design (CAD) format. The proposed system applies a fusion strategy to detect and recognize various components of CAD floor plans, such as walls, doors, windows and other ambiguous assets. Technically, a general rule-based filter parsing method is fist adopted to extract effective information from the original floor plan. Then, an image-processing based recovery method is employed to correct information extracted in the first step...
2017: PloS One
https://www.readbyqxmd.com/read/29149201/the-influence-of-filtering-and-downsampling-on-the-estimation-of-transfer-entropy
#10
Immo Weber, Esther Florin, Michael von Papen, Lars Timmermann
Transfer entropy (TE) provides a generalized and model-free framework to study Wiener-Granger causality between brain regions. Because of its nonparametric character, TE can infer directed information flow also from nonlinear systems. Despite its increasing number of applications in neuroscience, not much is known regarding the influence of common electrophysiological preprocessing on its estimation. We test the influence of filtering and downsampling on a recently proposed nearest neighborhood based TE estimator...
2017: PloS One
https://www.readbyqxmd.com/read/29149117/-influence-of-titanium-dioxide-activated-under-visible-light-on-survival-of-mold-fungi
#11
Daria Kądziołka, Paulina Rokicka, Agata Markowska-Szczupak, Antoni W Morawski
BACKGROUND: In public and residential buildings, fungi are usually found in the dust or growing on building materials medium such. It has been known that a number of their spores may contaminate the indoor environment and deteriorate air quality in accommodation spaces. Previously designed air cleaning systems do not guarantee a complete removal of agents harmful to humans and animals. Therefore, there is a great need to develop a new solution to remove molds from indoor air. In recent years, photocatalysis based on titanium dioxide (TiO<sub>2</sub>) has been proposed as an effective method for air pollutants removal...
November 17, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/29149088/model-based-heterogeneous-data-fusion-for-reliable-force-estimation-in-dynamic-structures-under-uncertainties
#12
Babak Khodabandeloo, Dyan Melvin, Hongki Jo
Direct measurements of external forces acting on a structure are infeasible in many cases. The Augmented Kalman Filter (AKF) has several attractive features that can be utilized to solve the inverse problem of identifying applied forces, as it requires the dynamic model and the measured responses of structure at only a few locations. But, the AKF intrinsically suffers from numerical instabilities when accelerations, which are the most common response measurements in structural dynamics, are the only measured responses...
November 17, 2017: Sensors
https://www.readbyqxmd.com/read/29148736/formation-of-metal-cyanide-complexes-in-deliquescent-airborne-particles-a-new-possible-sink-for-hcn-in-urban-environments
#13
Chiara Giorio, Daniele Marton, Gianni Formenton, Andrea Tapparo
Hydrogen cyanide is a ubiquitous gas in the atmosphere and a biomass burning tracer. Reactive gasses can be adsorbed onto aerosol particles where they can promote heterogeneous chemistry. In the present study, we report for the first time on the measurement and speciation of cyanides in atmospheric aerosol. Filter samples were collected at an urban background site in the city center of Padua (Italy), extracted and analyzed with headspace gas chromatography and nitrogen-phosphorous detection. The results showed that strongly bound cyanides were present in all aerosol samples at a concentration ranging between 0...
November 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29148583/study-of-the-hooking-behaviour-of-lepeophtheirus-salmonis-kr%C3%A3-yer-1837-copepodids-on-atlantic-salmon-salmo-salar-l-using-a-novel-in%C3%A2-vivo-test-system
#14
C Delfosse, C Lafont-Lecuelle, H Barthélémy, C Chabaud, E Teruel, C Bienboire-Frosini, P Pageat
The screening of putative semiochemicals involved in the interaction between Lepeophtheirus salmonis copepodid and the Atlantic salmon could be used to develop methods to prevent infestation. A bioassay was designed to evaluate the attractiveness of Atlantic salmon for L. salmonis copepodids by counting the number of hooked parasites. A salmon was bathed in a tank with 60 copepodids during 45 min. The salmon was humanely killed and its body was scrubbed above a plastic bag. The content of the bag was filtered to count the number of hooked parasites...
November 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/29148566/factors-that-influence-the-provision-of-intrapartum-and-postnatal-care-by-skilled-birth-attendants-in-low-and-middle-income-countries-a-qualitative-evidence-synthesis
#15
REVIEW
Susan Munabi-Babigumira, Claire Glenton, Simon Lewin, Atle Fretheim, Harriet Nabudere
BACKGROUND: In many low- and middle-income countries women are encouraged to give birth in clinics and hospitals so that they can receive care from skilled birth attendants. A skilled birth attendant (SBA) is a health worker such as a midwife, doctor, or nurse who is trained to manage normal pregnancy and childbirth. (S)he is also trained to identify, manage, and refer any health problems that arise for mother and baby. The skills, attitudes and behaviour of SBAs, and the extent to which they work in an enabling working environment, impact on the quality of care provided...
November 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29148538/molecular-testing-for-braf-mutations-to-inform-melanoma-treatment-decisions-a-move-toward-precision-medicine
#16
Liang Cheng, Antonio Lopez-Beltran, Francesco Massari, Gregory T MacLennan, Rodolfo Montironi
Approximately one-half of advanced (unresectable or metastatic) melanomas harbor a mutation in the BRAF gene, with V600E being the most common mutation. Targeted therapy with BRAF and MEK inhibitors is associated with significant long-term treatment benefit in patients with BRAF V600-mutated melanoma. Therefore, molecular testing for BRAF mutations is a priority in determining the course of therapy. A literature search was performed using MEDLINE/PubMed and scientific congress databases using the terms 'BRAF,' 'mutation,' and 'cancer/tumor...
November 17, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/29148404/other-autoinflammatory-disease-genes-in-an-fmf-prevalent-population-a-homozygous-mvk-mutation-and-a-novel-heterozygous-tnfrsf1a-mutation-in-two-different-turkish-families-with-clinical-fmf
#17
İlker Karacan, Serdal Uğurlu, Aslıhan Tolun, Eda Tahir Turanlı, Huri Özdoğan
OBJECTIVES: No MEFV mutations are detected in approximately 10% of the patients with clinical FMF in populations where the disease is highly prevalent. Causative mutations were searched in other genes in two such families with "MEFV negative clinical FMF". METHODS: Father and daughter of family A had attacks of fever, abdominal pain and AA amyloidosis. The two sibs of family B complained of febrile episodes with abdominal pain and arthritis. The patients were clinically investigated...
October 27, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29148069/long-term-oral-exposure-to-safe-dose-of-bisphenol-a-in-association-with-high-fat-diet-stimulate-the-prostatic-lesions-in-a-rodent-model-for-prostate-cancer
#18
Camila H Facina, Silvana G P Campos, Bianca F Gonçalves, Rejane M Góes, Patricia S L Vilamaior, Sebastião R Taboga
BACKGROUND: Studies have shown that exposure to environmental chemicals known as endocrine disruptors can cause permanent changes in genital organs, such as the prostate. Among these environmental chemicals stands out bisphenol A (BPA). Another factor associated with prostate changes is the consumption of a high-fat diet. Although the relationship between the consumption of a high-fat diet and an increased risk of prostate cancer is well established, the mechanisms that lead to the establishment of this disease are not completely understood, nor the simultaneous action of BPA and high-fat diet...
November 17, 2017: Prostate
https://www.readbyqxmd.com/read/29147684/c-207c-g-mutation-in-sepiapterin-reductase-causes-autosomal-dominant-dopa-responsive-dystonia
#19
Ali S Shalash, Thomas W Rösler, Stefanie H Müller, Mohamed Salama, Günther Deuschl, Ulrich Müller, Thomas Opladen, Britt-Sabina Petersen, Andre Franke, Franziska Hopfner, Gregor Kuhlenbäumer, Günter U Höglinger
Objective: To elucidate the genetic cause of an Egyptian family with dopa-responsive dystonia (DRD), a childhood-onset dystonia, responding therapeutically to levodopa, which is caused by mutations in various genes. Methods: Rare variants in all coding exons of GCH1 were excluded by Sanger sequencing. Exome sequencing was applied for 1 unaffected and 2 affected family members. To investigate the functional consequences of detected genetic variants, urinary sepiapterin concentrations were determined by high-performance liquid chromatography...
December 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/29147563/a-novel-microaneurysms-detection-approach-based-on-convolutional-neural-networks-with-reinforcement-sample-learning-algorithm
#20
Umit Budak, Abdulkadir Şengür, Yanhui Guo, Yaman Akbulut
Microaneurysms (MAs) are known as early signs of diabetic-retinopathy which are called red lesions in color fundus images. Detection of MAs in fundus images needs highly skilled physicians or eye angiography. Eye angiography is an invasive and expensive procedure. Therefore, an automatic detection system to identify the MAs locations in fundus images is in demand. In this paper, we proposed a system to detect the MAs in colored fundus images. The proposed method composed of three stages. In the first stage, a series of pre-processing steps are used to make the input images more convenient for MAs detection...
December 2017: Health Information Science and Systems
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