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https://www.readbyqxmd.com/read/28432989/the-effect-of-natural-ventilation-strategy-on-indoor-air-quality-in-schools
#1
Luca Stabile, Marco Dell'Isola, Aldo Russi, Angelamaria Massimo, Giorgio Buonanno
In order to reduce children's exposure to pollutants in classrooms a proper ventilation strategy need to be adopted. Such strategy is even more important in naturally ventilated schools where the air exchange rate is only based on the manual airing of classrooms. The present work aimed to evaluate the effect of the manual airing strategy on indoor air quality in Italian classrooms. For this aim, schools located in the Central Italy were investigated. Indoor air quality was studied in terms of CO2, particle number and PM concentrations and compared to corresponding outdoor levels...
April 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432987/multimodal-imaging-of-language-reorganization-in-patients-with-left-temporal-lobe-epilepsy
#2
Yu-Hsuan A Chang, Nobuko Kemmotsu, Kelly M Leyden, N Erkut Kucukboyaci, Vicente J Iragui, Evelyn S Tecoma, Leena Kansal, Marc A Norman, Rachelle Compton, Tobin J Ehrlich, Vedang S Uttarwar, Anny Reyes, Brianna M Paul, Carrie R McDonald
This study explored the relationships among multimodal imaging, clinical features, and language impairment in patients with left temporal lobe epilepsy (LTLE). Fourteen patients with LTLE and 26 controls underwent structural MRI, functional MRI, diffusion tensor imaging, and neuropsychological language tasks. Laterality indices were calculated for each imaging modality and a principal component (PC) was derived from language measures. Correlations were performed among imaging measures, as well as to the language PC...
April 19, 2017: Brain and Language
https://www.readbyqxmd.com/read/28432983/improved-resolution-and-simplification-of-the-spin-diffusion-based-nmr-method-for-the-structural-analysis-of-mixed-linker-mofs
#3
Andraž Krajnc, Bart Bueken, Dirk De Vos, Gregor Mali
Nuclear magnetic resonance spectroscopy combined with modeling represents a powerful tool for the structural analysis of heterogeneous materials. In this contribution we describe an upgraded method, particularly suited for the structural analysis of mixed-linker metal-organic framework materials, which is based on the measurement and modeling of proton spin diffusion among constituents. We tested the method on a UiO-66-type metal-organic material, in which the organic building units were 1,4-benzenedicarboxylate and trans-1,4-cyclohexanedicarboxylate anions distributed within the framework in an unknown manner...
April 12, 2017: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/28432981/hidden-markov-model-and-chapman-kolmogrov-for-protein-structures-prediction-from-images
#4
Md Sarwar Kamal, Linkon Chowdhury, Mohammad Ibrahim Khan, Amira S Ashour, João Manuel R S Tavares, Nilanjan Dey
Protein structure prediction and analysis are more significant for living organs to perfect asses the living organ functionalities. Several protein structure prediction methods use neural network (NN). However, the Hidden Markov model is more interpretable and effective for more biological data analysis compared to the NN. It employs statistical data analysis to enhance the prediction accuracy. The current work proposed a protein prediction approach from protein images based on Hidden Markov Model and Chapman Kolmogrov equation...
April 13, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28432977/effect-of-short-term-zn-pb-or-long-term-multi-metal-stress-on-physiological-and-morphological-parameters-of-metallicolous-and-nonmetallicolous-echium-vulgare-l-populations
#5
Sławomir Dresler, Magdalena Wójciak-Kosior, Ireneusz Sowa, Grzegorz Stanisławski, Izabela Bany, Małgorzata Wójcik
The aim of the study was to determine the response of metallicolous and nonmetallicolous Echium vulgare L. populations to chronic multi-metal (Zn, Pb, Cd) and acute Zn (200, 400 μM) and Pb (30, 60 μM) stress. Three populations of E. vulgare, one from uncontaminated and two from metal-contaminated areas, were studied. Two types of experiments were performed - a short-term hydroponic experiment with acute Zn or Pb stress and a long-term manipulative soil experiment with the use of soils from the sites of origin of the three populations...
April 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28432972/assessment-of-the-bioavailability-and-depuration-of-uranium-cesium-and-thorium-in-snails-cantareus-aspersus-using-kinetics-models
#6
B Pauget, A Villeneuve, P O Redon, A Cuvier, A de Vaufleury
Uranium ore waste has led to soil contamination that may affect both environmental and soil health. To analyze the risk of metal transfer, metal bioavailability must be estimated by measuring biological parameters. Kinetic studies allow taking into account the dynamic mechanisms of bioavailability, as well as the steady state concentration in organisms necessary to take into account for relevant risk assessment. In this way, this work aims to model the snail accumulation and excretion kinetics of uranium (U), cesium (Cs) and thorium (Th)...
April 7, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28432966/risk-for-eating-disorders-modulates-interpretation-bias-in-a-semantic-priming-task
#7
Kaylee Misener, Maya Libben
The current study used a semantic priming paradigm to investigate the presence of implicit interpretation biases for food and body shape words among 118 undergraduate females. Reaction times (RTs) were recorded while participants made lexical decisions (i.e., word vs. non-word judgments) to lexical targets that were preceded by negatively valenced eating disorder related (e.g., fat-PIZZA), eating disorder unrelated (e.g., party-PIZZA), or semantically unrelated (e.g., umbrella-PIZZA) prime words. Self-reported eating disorder traits were assessed using the Body Shape Questionnaire (BSQ-34), the Eating Attitudes Test (EAT-26), and the Eating Disorder Examination (EDE-Q 6...
April 19, 2017: Body Image
https://www.readbyqxmd.com/read/28432965/spatiotemporal-description-of-btex-volatile-organic-compounds-in-a-middle-eastern-megacity-tehran-study-of-exposure-prediction-for-environmental-health-research-tehran-sepehr
#8
Heresh Amini, Vahid Hosseini, Christian Schindler, Hossein Hassankhany, Masud Yunesian, Sarah B Henderson, Nino Künzli
The spatiotemporal variability of ambient volatile organic compounds (VOCs) in Tehran, Iran, is not well understood. Here we present the design, methods, and results of the Tehran Study of Exposure Prediction for Environmental Health Research (Tehran SEPEHR) on ambient concentrations of benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene (BTEX), and total BTEX. To date, this is the largest study of its kind in a low- and middle-income country and one of the largest globally. We measured BTEX concentrations at five reference sites and 174 distributed sites identified by a cluster analytic method...
April 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28432963/health-hazards-of-child-labor-in-the-leather-products-and-surgical-instrument-manufacturing-industries-of-sialkot-pakistan
#9
Muhammad Junaid, Riffat Naseem Malik, De-Sheng Pei
Child labor is a major challenge in the developing countries and comprehensive health hazard identification studies on this issue are still lacking. Therefore, the current study is an effort to highlight the health concerns of child labor exposed in the key small scale industries of Sialkot, Pakistan. Our findings revealed jolting levels of heavy metals in the urine, blood, serum, saliva, and hair samples collected from the exposed children. For example, in the urine samples, Cd, Cr, Ni, and Pb were measured at the respective concentrations of 39...
April 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28432961/diurnal-patterns-and-relationships-between-physiological-and-self-reported-stress-in-patients-with-epilepsy-and-psychogenic-non-epileptic-seizures
#10
Barbora Novakova, Peter R Harris, Markus Reuber
PURPOSE: Patients with epilepsy and those with psychogenic non-epileptic seizures (PNES) experience high levels of stress and stress is one of the most frequently self-identified seizure precipitants. Although stress is a multifaceted phenomenon, few studies have systematically examined its different components in patients with seizures. The aim of this study was therefore to describe diurnal patterns of psychological and physiological measures of stress in patients with epilepsy and patients with PNES, and explore their relationships to each other in order to improve our understanding of the mechanisms underlying stress and seizure occurrence in these patients...
April 19, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28432945/exploring-isoxsuprine-hydrochloride-binding-with-human-serum-albumin-in-the-presence-of-folic-acid-and-ascorbic-acid-using-multispectroscopic-and-molecular-modeling-methods
#11
Fereshteh Shiri, Somaye Shahraki, Amin Shahriyar, Mostafa Heidari Majd
Isoxsuprine hydrochloride (vasodilator drug), folic acid and ascorbic acid are medicines which can be utilized alone or simultaneously by pregnant women. In the present work the competitive binding of isoxsuprine hydrochloride (ISO) with human serum albumin (HSA) in the absence and presence of folic acid (FOL) and ascorbic acid (AS) was investigated using different spectroscopic probes and molecular docking studies. The results of fluorescence suggested that isoxsuprine alone or in the presence of ascorbic acid can bind to HSA and quench the fluorescence of HSA with static mechanism but For HSA-folic acid-isoxsuprine system, dynamic type of quenching mechanisms is involved...
April 11, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28432938/the-role-of-distress-intolerance-in-the-relationship-between-childhood-sexual-abuse-and-problematic-alcohol-use-among-latin-american-msm
#12
Katie Wang, Jaclyn M White Hughto, Katie B Biello, Conall O'Cleirigh, Kenneth H Mayer, Joshua G Rosenberger, David S Novak, Matthew J Mimiaga
BACKGROUND: Despite the high prevalence of childhood sexual abuse (CSA) among men who have sex with men (MSM) and its well-documented association with substance use in adulthood, little research has examined the psychological mechanisms underlying this association. The current study utilized a large, multinational sample of MSM in Latin America to examine the role of distress intolerance (i.e., decreased capacity to withstand negative psychological states) in the relationship between childhood sexual abuse history and problematic alcohol use...
April 6, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28432933/-non-symbolic-magnitude-processing-in-children-with-mathematical-difficulties-a-meta-analysis
#13
Christin Schwenk, Delphine Sasanguie, Jörg-Tobias Kuhn, Sophia Kempe, Philipp Doebler, Heinz Holling
Symbolic and non-symbolic magnitude representations, measured by digit or dot comparison tasks, are assumed to underlie the development of arithmetic skills. The comparison distance effect (CDE) has been suggested as a hallmark of the preciseness of mental magnitude representations. It implies that two magnitudes are harder to discriminate when the numerical distance between them is small, and may therefore differ in children with mathematical difficulties (MD), i.e., low mathematical achievement or dyscalculia...
April 19, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28432929/performance-testing-of-the-neutron-flux-monitors-from-10kev-to-1mev-developed-for-bnct-a-preliminary-study
#14
Xingcai Guan, Masanobu Manabe, Shingo Tamaki, Fuminobu Sato, Isao Murata, Tieshan Wang
The neutron flux monitors from 10keV to 1MeV designed for boron neutron capture therapy (BNCT) were experimentally tested with prototype monitors in an appropriate neutron field produced at the intense deuterium-tritium neutron source facility OKTAVIAN of Osaka University, Japan. The experimental test results and related analysis indicated that the performance of the monitors was good and the neutron fluxes from 10keV to 1MeV of practical BNCT neutron sources can be measured within 10% by the monitors.
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28432928/a-humanized-mouse-based-hiv-1-viral-outgrowth-assay-with-higher-sensitivity-than-in-vitro-qvoa-in-detecting-latently-infected-cells-from-individuals-on-art-with-undetectable-viral-loads
#15
Paige Charlins, Kimberly Schmitt, Leila Remling-Mulder, Louise E Hogan, Emily Hanhauser, Kristen S Hobbs, Frederick Hecht, Steven G Deeks, Timothy J Henrich, Ramesh Akkina
Assays that can verify full viral eradication are essential in the context of achieving a cure for HIV/AIDS. In vitro quantitative viral out growth assays (qVOA) are currently the gold standard for measuring latent HIV-1 but these assays often fail to detect very low levels of replication-competent virus. Here we investigated an alternative in vivo approach for sensitive viral detection using humanized mice (hmVOA). Peripheral blood CD4+ T cell samples from HIV subjects on stable ART with undetectable viral loads by RT-PCR were first assayed by in vitro qVOA...
April 19, 2017: Virology
https://www.readbyqxmd.com/read/28432909/source-receptor-relationships-for-pm2-5-during-typical-pollution-episodes-in-the-pearl-river-delta-city-cluster-china
#16
Yiming Liu, Yingying Hong, Qi Fan, Xuemei Wang, Pakwai Chan, Xiaoyang Chen, Anqi Lai, Mingjie Wang, Xunlai Chen
Located in the Southern China monsoon region, pollution days in Pearl River Delta (PRD) were classified into "Western type", "Central type" or "Eastern type", with a relative percentage of 67%, 24% and 9%, respectively. Using this classification system, three typical pollution events were selected for numerical simulations using the WRF-Chem model. The source sensitivity method for anthropogenic emissions of PM2.5 and its precursors was applied to identify the source-receptor relationships for PM2.5 among 9 cities in PRD...
April 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432908/particulate-matter-pollution-from-aviation-related-activity-at-a-small-airport-of-the-aegean-sea-insular-region
#17
C Psanis, E Triantafyllou, M Giamarelou, M Manousakas, K Eleftheriadis, G Biskos
The unprecedented growth in aviation during the last years has resulted in a notable increase of local air pollution related to airports. The impacts of aviation on air quality can be extremely high particularly around airports serving remote insular regions with pristine atmospheric environments. Here we report measurements that show how the atmospheric aerosol is affected by the activity at a small airport in a remote region. More specifically, we provide measurements performed at the airport of Mytilene, Greece, a regional yet international airport that serves the entire island of Lesvos; the third largest island of the country...
April 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432905/statistical-analysis-of-dislocations-and-dislocation-boundaries-from-ebsd-data
#18
C Moussa, M Bernacki, R Besnard, N Bozzolo
Electron BackScatter Diffraction (EBSD) is often used for semi-quantitative analysis of dislocations in metals. In general, disorientation is used to assess Geometrically Necessary Dislocations (GNDs) densities. In the present paper, we demonstrate that the use of disorientation can lead to inaccurate results. For example, using the disorientation leads to different GND density in recrystallized grains which cannot be physically justified. The use of disorientation gradients allows accounting for measurement noise and leads to more accurate results...
April 14, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28432895/predictive-ability-of-visit-to-visit-variability-in-hba1c-and-systolic-blood-pressure-for-the-development-of-microalbuminuria-and-retinopathy-in-people-with-type-2-diabetes
#19
Toshiko Takao, Machi Suka, Hiroyuki Yanagisawa, Yutaka Matsuyama, Yasuhiko Iwamoto
AIMS: We explored whether visit-to-visit variability in both glycated hemoglobin (HbA1c) and systolic blood pressure (SBP) simultaneously predicted the development of microalbuminuria and retinopathy, and whether the predictive ability of these measurements changed according to mean HbA1c and SBP levels in people with type 2 diabetes. METHODS: A retrospective observational cohort study was conducted on 243 type 2 diabetes patients with normoalbuminuria and 486 without retinopathy at the first visit and within 1year thereafter...
April 7, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28432887/application-of-a-%C3%AE-rs-index-based-method-and-techno-economic-analysis-for-in-situ-treatment-of-137-cs-contaminated-soils-by-cement-barite-based-stabilisation-solidification
#20
Pietro P Falciglia, Stefano Romano, Federico G A Vagliasindi
This paper examines the application of cement (C)-barite (Ba) based-Stabilisation/Solidification (S/S) for the remediation of (137)Cs-contaminated soils, investigating the influence of soil: grout and C: Ba ratios on the shielding performance of the S/S mix assessed as gamma radiation shielding (γRS) index variation. Results from experiments were used to perform a novel approach and an economic analysis in order to calculate the effective dose reduction achievable by S/S and to assess the optimum quantities and costs of selected mixes, respectively...
April 19, 2017: Journal of Environmental Management
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