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https://www.readbyqxmd.com/read/28335547/genomic-loads-and-genotypes-of-respiratory-syncytial-virus-viral-factors-during-lower-respiratory-tract-infection-in-chilean-hospitalized-infants
#1
Yazmín Espinosa, Camila San Martín, Alejandro A Torres, Mauricio J Farfán, Juan P Torres, Vasanthi Avadhanula, Pedro A Piedra, Lorena I Tapia
The clinical impact of viral factors (types and viral loads) during respiratory syncytial virus (RSV) infection is still controversial, especially regarding newly described genotypes. In this study, infants with RSV bronchiolitis were recruited to describe the association of these viral factors with severity of infection. RSV antigenic types, genotypes, and viral loads were determined from hospitalized patients at Hospital Roberto del Río, Santiago, Chile. Cases were characterized by demographic and clinical information, including days of lower respiratory symptoms and severity...
March 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28335534/a-networked-sensor-system-for-the-analysis-of-plot-scale-hydrology
#2
German Villalba, Fernando Plaza, Xiaoyang Zhong, Tyler W Davis, Miguel Navarro, Yimei Li, Thomas A Slater, Yao Liang, Xu Liang
This study presents the latest updates to the Audubon Society of Western Pennsylvania (ASWP) testbed, a $50,000 USD, 104-node outdoor multi-hop wireless sensor network (WSN). The network collects environmental data from over 240 sensors, including the EC-5, MPS-1 and MPS-2 soil moisture and soil water potential sensors and self-made sap flow sensors, across a heterogeneous deployment comprised of MICAz, IRIS and TelosB wireless motes. A low-cost sensor board and software driver was developed for communicating with the analog and digital sensors...
March 20, 2017: Sensors
https://www.readbyqxmd.com/read/28335491/health-and-wellbeing-of-occupants-in-highly-energy-efficient-buildings-a-field-study
#3
Peter Wallner, Peter Tappler, Ute Munoz, Bernhard Damberger, Anna Wanka, Michael Kundi, Hans-Peter Hutter
Passive houses and other highly energy-efficient buildings need mechanical ventilation. However, ventilation systems in such houses are regarded with a certain degree of skepticism by parts of the public due to alleged negative health effects. Within a quasi-experimental field study, we investigated if occupants of two types of buildings (mechanical vs. natural ventilation) experience different health, wellbeing and housing satisfaction outcomes and if associations with indoor air quality exist. We investigated 123 modern homes (test group: with mechanical ventilation; control group: naturally ventilated) built in the years 2010 to 2012 in the same geographic area and price range...
March 19, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335404/perceptions-of-health-co-benefits-in-relation-to-greenhouse-gas-emission-reductions-a-survey-among-urban-residents-in-three-chinese-cities
#4
Jinghong Gao, Guozhang Xu, Wenjun Ma, Yong Zhang, Alistair Woodward, Sotiris Vardoulakis, Sari Kovats, Paul Wilkinson, Tianfeng He, Hualiang Lin, Tao Liu, Shaohua Gu, Jun Wang, Jing Li, Jun Yang, Xiaobo Liu, Jing Li, Haixia Wu, Qiyong Liu
Limited information is available on the perceptions of stakeholders concerning the health co-benefits of greenhouse gas (GHG) emission reductions. The purpose of this study was to investigate the perceptions of urban residents on the health co-benefits involving GHG abatement and related influencing factors in three cities in China. Beijing, Ningbo and Guangzhou were selected for this survey. Participants were recruited from randomly chosen committees, following quotas for gender and age in proportion to the respective population shares...
March 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335360/super-hydrophobic-icephobic-coatings-based-on-silica-nanoparticles-modified-by-self-assembled-monolayers
#5
Junpeng Liu, Zaid A Janjua, Martin Roe, Fang Xu, Barbara Turnbull, Kwing-So Choi, Xianghui Hou
A super-hydrophobic surface has been obtained from nanocomposite materials based on silica nanoparticles and self-assembled monolayers of 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS) using spin coating and chemical vapor deposition methods. Scanning electron microscope images reveal the porous structure of the silica nanoparticles, which can trap small-scale air pockets. An average water contact angle of 163° and bouncing off of incoming water droplets suggest that a super-hydrophobic surface has been obtained based on the silica nanoparticles and POTS coating...
December 2, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335355/influence-of-external-gaseous-environments-on-the-electrical-properties-of-zno-nanostructures-obtained-by-a-hydrothermal-method
#6
Marcin Procek, Tadeusz Pustelny, Agnieszka Stolarczyk
This paper deals with experimental investigations of ZnO nanostructures, consisting of a mixture of nanoparticles and nanowires, obtained by the chemical (hydrothermal) method. The influences of both oxidizing (NO₂) and reducing gases (H₂, NH₃), as well as relative humidity (RH) on the physical and chemical properties of ZnO nanostructures were tested. Carrier gas effect on the structure interaction with gases was also tested; experiments were conducted in air and nitrogen (N₂) atmospheres. The effect of investigated gases on the resistance of the ZnO nanostructures was tested over a wide range of concentrations at room temperature (RT) and at 200 °C...
November 29, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335332/micromechanical-properties-of-nanostructured-clay-oxide-multilayers-synthesized-by-layer-by-layer-self-assembly
#7
Dongwei Hou, Guoping Zhang, Rohit Raj Pant, Zhongxin Wei, Shuilong Shen
Clay-based nanostructured multilayers, such as clay-polymer multilayers and clay-oxide multilayers, have attracted growing attention owing to their remarkable mechanical properties and promising application in various fields. In this paper, synthesis of a new kind of nanostructured clay-oxide multilayers by layer-by-layer self-assembly was explored. Nano-mechanical characterization of 18 clay-based multilayer samples, prepared under as-deposited (i.e., air-dried) and annealing conditions at 400 °C/600 °C with different precursor cations and multilayer structure, were carried out using nanoindentation testing, atomic force microscopy (AFM), and X-ray diffraction (XRD)...
November 8, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335299/synthesis-of-sic-ag-cellulose-nanocomposite-and-its-antibacterial-activity-by-reactive-oxygen-species-generation
#8
Andrzej Borkowski, Tomasz Cłapa, Mateusz Szala, Arkadiusz Gąsiński, Marek Selwet
We describe the synthesis of nanocomposites, based on nanofibers of silicon carbide, silver nanoparticles, and cellulose. Silver nanoparticle synthesis was achieved with chemical reduction using hydrazine by adding two different surfactants to obtain a nanocomposite with silver nanoparticles of different diameters. Determination of antibacterial activity was based on respiration tests. Enzymatic analysis indicates oxidative stress, and viability testing was conducted using an epifluorescence microscope. Strong bactericidal activity of nanocomposites was found against bacteria Escherichia coli and Bacillus cereus, which were used in the study as typical Gram-negative and Gram-positive bacteria, respectively...
September 13, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335290/the-effect-of-viscous-air-damping-on-an-optically-actuated-multilayer-mos%C3%A2-nanomechanical-resonator-using-fabry-perot-interference
#9
Yumei She, Cheng Li, Tian Lan, Xiaobin Peng, Qianwen Liu, Shangchun Fan
We demonstrated a multilayer molybdenum disulfide (MoS₂) nanomechanical resonator by using optical Fabry-Perot (F-P) interferometric excitation and detection. The thin circular MoS₂ nanomembrane with an approximate 8-nm thickness was transferred onto the endface of a ferrule with an inner diameter of 125 μm, which created a low finesse F-P interferometer with a cavity length of 39.92 μm. The effects of temperature and viscous air damping on resonance behavior of the resonator were investigated in the range of -10-80 °C...
September 5, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335243/correlation-between-cdse-qd-synthesis-post-synthetic-treatment-and-bhj-hybrid-solar-cell-performance
#10
Michael Eck, Michael Krueger
In this publication we show that the procedure to synthesize nanocrystals and the post-synthetic nanocrystal ligand sphere treatment have a great influence not only on the immediate performance of hybrid bulk heterojunction solar cells, but also on their thermal, long-term, and air stability. We herein demonstrate this for the particular case of spherical CdSe nanocrystals, post-synthetically treated with a hexanoic acid based treatment. We observe an influence from the duration of this post-synthetic treatment on the nanocrystal ligand sphere size, and also on the solar cell performance...
June 14, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335010/schistosomiasis-in-scottish-travellers-public-health-importance-of-laboratory-testing-and-the-need-for-enhanced-surveillance
#11
Claire L Alexander, Laura Cottom, Kitty Smith, Kali Perrow, Michael Coyne, Brian L Jones
Background: Imported schistosomiasis is of significant public health importance and is likely to be underestimated since infection is often asymptomatic. We describe data from travellers residing in Scotland which includes a subset of group travellers from one of the largest Health Boards in Scotland. Methods: Clotted bloods were obtained during the period 2001-15 from a total of 8163 Scottish travellers. This included seven groups comprising of 182 travellers. Sera were examined for the presence of Schistosome species antibody at the Scottish Parasite Diagnostic and Reference Laboratory (SPDRL)...
March 14, 2017: Journal of Public Health
https://www.readbyqxmd.com/read/28334809/subcutaneous-emphysema-of-scalp-following-resuscitation-in-a-neonate
#12
Avinash Dhaware, Sandeep Kadam, Sanjay Patole
BACKGROUND: Neonatal subcutaneous emphysema of scalp (SES) with air leaks is rare. Case characteristics: Neonate presented with SES in addition to pneumothorax and pneumomediastinum. OBSERVATION: SES resolved after the chest was drained to treat pneumothorax. OUTCOME: Neonate made full recovery. CONCLUSION: Neonatal SES may be associated with air leaks post-resuscitation, which has not been reported.
February 21, 2017: Journal of Tropical Pediatrics
https://www.readbyqxmd.com/read/28334674/organochlorine-pesticides-in-soil-air-and-vegetation-at-and-around-a-contaminated-site-in-southwestern-china-concentration-transmission-and-risk-evaluation
#13
Yanyan Fang, Zhiqiang Nie, Qingqi Die, Yajun Tian, Feng Liu, Jie He, Qifei Huang
Remediation and management of contaminated sites have become a prevalent problem under the current situation in China. The present study was conducted to investigate the concentration, transmission, and health risk of organochlorine pesticides (OCPs) in soil, air, and vegetation at and around a typical pesticide-contaminated site located in southwestern China. Exchange flux between soil and air was calculated to investigate the transmission of OCPs. Hexachlorocyclohexane (ΣHCHs, top soil: 19.1 mg/kg d.w., air: 52...
March 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/28334669/distribution-and-sea-to-air-flux-of-isoprene-in-the-east-china-sea-and-the-south-yellow-sea-during-summer
#14
Jian-Long Li, Hong-Hai Zhang, Gui-Peng Yang
Spatial distribution and sea-to-air flux of isoprene in the East China Sea and the South Yellow Sea in July 2013 were investigated. This study is the first to report the concentrations of isoprene in the China marginal seas. Isoprene concentrations in the surface seawater during summer ranged from 32.46 to 173.5 pM, with an average of 83.62 ± 29.22 pM. Distribution of isoprene in the study area was influenced by the diluted water from the Yangtze River, which stimulated higher in-situ phytoplankton production of isoprene rather than direct freshwater input...
March 20, 2017: Chemosphere
https://www.readbyqxmd.com/read/28334645/long-term-residential-road-traffic-noise-and-no2-exposure-in-relation-to-risk-of-incident-myocardial-infarction-a-danish-cohort-study
#15
Nina Roswall, Ole Raaschou-Nielsen, Matthias Ketzel, Anders Gammelmark, Kim Overvad, Anja Olsen, Mette Sørensen
BACKGROUND: Road traffic is a source of both air pollution and noise; two environmental hazards both found to increase the risk of ischemic heart disease. Given the high correlation between these pollutants, it is important to investigate combined effects, in relation to myocardial infarction (MI). METHODS: Among 50,744 middle-aged Danes enrolled into the Diet, Cancer and Health cohort from 1993 to 97, we identified 2403 cases of incident MI during a median follow-up of 14...
March 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28334534/nickel-catalyzed-aminoxylation-of-inert-aliphatic-c-sp-3-h-bonds-with-stable-nitroxyl-radicals-under-air-one-pot-route-to-%C3%AE-formyl-acid-derivatives
#16
Chunxia Wang, Luoqiang Zhang, Jingsong You
Nickel-catalyzed aminoxylation of an unactivated C(sp(3))-H bond with a stable nitroxyl radical has been accomplished for the first time to offer various N-alkoxyamine derivatives, which further enables a one-pot approach to α-formyl acid derivatives. The aminoxylation process reported also provides direct evidence for the oxidative addition of a cyclometallic intermediate with a free radical, which is helpful for the reaction-mechanism study in transition-metal-catalyzed functionalization of inert C(sp(3))-H bonds...
March 23, 2017: Organic Letters
https://www.readbyqxmd.com/read/28334489/ce-iv-gd-iii-mixed-oxides-as-hosts-for-er-iii-based-upconversion-phosphors
#17
Cecilia Sorbello, Petra Gross, Cristian A Strassert, Matías Jobbágy, Beatriz C Barja
A family of Er(III) and Er(III) -Yb(III) based nanophosphors, hosted in monophasic oxidic Ce(IV) -Gd(III) binary solid solutions, was prepared. The samples were formulated with a constant Er(III) content as the activator, with the eventual addition of Yb(III) as a sensitizer. The amorphous Ce0.94-x Gdx Er0.06 (OH)CO3 ⋅H2 O and Ce0.94-x Gdx Er0.05 Yb0.01 (OH)CO3 ⋅H2 O precursors were prepared by following the urea method to obtain monodispersed spheres of tunable size ranging from 30 to 450 nm. After being decomposed at 1273 K under an atmosphere of air, the precursors of 200 nm in diameter evolved into monophasic polycrystalline particles preserving the parent shape and size...
March 23, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28334443/pollutant-ground-concentrations-of-nonneutrally-buoyant-particles
#18
Alon Mandel, Eli Stern, Amos Ullmann, Neima Brauner
A methodology is suggested for the estimation of the mass density and the cumulative ground deposition of a nonvolatile, nonneutrally buoyant, air pollutant (liquid or solid) released from a polluted column (following an explosion caused during routine operation in, e.g., the chemical industry or due to any kind of hostile act) and deposited on the ground via gravitational settling. In many cases, the deposited mass due to gravitational settling constitutes a significant fraction of the original inventory released from the source...
March 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28334256/distribution-of-invasive-cylindrospermopsis-raciborskii-in-the-east-central-europe-is-driven-by-climatic-and-local-environmental-variables
#19
Mikolaj Kokocinski, Ilona Gagala, Iwona Jasser, Jurate Karosiene, Jurate Kasperoviciene, Justyna Kobos, Judita Koreiviene, Janne Soininen, Agnieszka Szczurowska, Michal Woszczyk, Joanna Mankiewicz-Boczek
Mechanisms behind expansion of an invasive cyanobacterium Cylindrospermopsis raciborskii have not been fully resolved and different hypotheses, such as global warming, are suggested. In the East-Central Europe, it is widely occurring in western part of Poland but only in single locations in the East due to some limiting factors. Therefore, broad scale phytoplankton survey including 117 randomly selected lakes in Poland and Lithuania was conducted. The results showed that C. raciborskii occurred widely in western part of Poland but was absent from other regions and Lithuania except one lake...
March 9, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28334238/separate-and-combined-effects-of-mentha-piperata-and-mentha-pulegium-essential-oils-and-a-pathogenic-fungus-lecanicillium-muscarium-against-aphis-gossypii-hemiptera-aphididae
#20
Asgar Ebadollahi, Mahdi Davari, Jabrael Razmjou, Bahram Naseri
In the present study, the toxicity of essential oils of Mentha piperata L. and Mentha pulegium L. and pathogenicity of Lecanicillium muscarium (Zare & Gams) were studied in the melon aphid, Aphis gossypii Glover. Analyses of the essential oils by GC-MS indicated limonene (27.28%), menthol (24.71%), menthone (14.01%), and carvol (8.46%) in the M. piperata essential oil and pulegone (73.44%), piperitenone (5.49%), decane (4.99%), and limonene (3.07%) in the essential oil of M. pulegium as the main components...
March 3, 2017: Journal of Economic Entomology
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