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https://www.readbyqxmd.com/read/28820996/exploring-ozonation-as-treatment-alternative-for-methiocarb-and-formed-transformation-products-abatement
#1
A Cruz-Alcalde, C Sans, S Esplugas
Despite the high toxicity and resistance to conventional water treatments exhibited by methiocarb (MC), there are no reports regarding the degradation of this priority pesticide by means of alternative purification technologies. In this work, the removal of MC by means of ozonation was studied for the first time, employing a multi-reactor methodology and neutral pH conditions. The second-order rate constants of MC reaction with molecular ozone (O3) and formed hydroxyl radicals (OH·) were determined to be 1...
August 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28820991/robust-evaluation-of-performance-monitoring-options-for-ozone-disinfection-in-water-recycling-using-bayesian-analysis
#2
Guido Carvajal, Amos Branch, Philipp Michel, Scott A Sisson, David J Roser, Jörg E Drewes, Stuart J Khan
Ozonation of wastewater has gained popularity because of its effectiveness in removing colour, UV absorbance, trace organic chemicals, and pathogens. Due to the rapid reaction of ozone with organic compounds, dissolved ozone is often not measurable and therefore, the common disinfection controlling parameter, concentration integrated over contact time (CT) cannot be obtained. In such cases, alternative parameters have been shown to be useful as surrogate measures for microbial removal including change in UV254 absorbance (ΔUVA), change in total fluorescence (ΔTF), or O3:TOC (or O3:DOC)...
August 1, 2017: Water Research
https://www.readbyqxmd.com/read/28819990/effects-of-maternal-high-fat-diet-and-sedentary-lifestyle-on-susceptibility-of-adult-offspring-to-ozone-exposure-in-rats
#3
C J Gordon, P M Phillips, A F M Johnstone, J Schmid, M C Schladweiler, A Ledbetter, S J Snow, U P Kodavanti
Epidemiological and experimental data suggest that obesity exacerbates the health effects of air pollutants such as ozone (O3). Maternal inactivity and calorically rich diets lead to offspring that show signs of obesity. Exacerbated O3 susceptibility of offspring could thus be manifested by maternal obesity. Thirty-day-old female Long-Evans rats were fed a control (CD) or high-fat (HF) (60% calories) diet for 6 wks and then bred. GD1 rats were then housed with a running wheel (RW) or without a wheel (SED) until parturition, creating four groups of offspring: CD-SED, CD-RW, HF-SED and HF-RW...
August 18, 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28819271/a-magnetoelectric-flux-gate-new-approach-for-weak-dc-magnetic-field-detection
#4
Zhaoqiang Chu, Huaduo Shi, Mohammad Javad PourhosseiniAsl, Jingen Wu, Weiliang Shi, Xiangyu Gao, Xiaoting Yuan, Shuxiang Dong
The magnetic flux gate sensors based on Faraday's Law of Induction are widely used for DC or extremely low frequency magnetic field detection. Recently, as the fast development of multiferroics and magnetoelectric (ME) composite materials, a new technology based on ME coupling effect is emerging for potential devices application. Here, we report a magnetoelectric flux gate sensor (MEFGS) for weak DC magnetic field detection for the first time, which works on a similar magnetic flux gate principle, but based on ME coupling effect...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818043/erratum-to-re-classification-within-the-serogroups-o3-and-o8-of-citrobacter-strains
#5
Ewa Katzenellenbogen, Magdalena Staniszewska, Nina A Kocharova, Małgorzata Mieszała, Agnieszka Korzeniowska-Kowal, Sabina Górska, Yuriy A Knirel, Andrzej Gamian
No abstract text is available yet for this article.
August 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28816399/preliminary-results-on-the-photoluminescence-and-optically-stimulated-luminescence-in-cu-doped-and-ag-doped-znb2-x4-b%C3%A2-%C3%A2-li-na-k-x%C3%A2-%C3%A2-cl-br-compounds
#6
Milind Jog, Rajesh Patil, Yogesh More, Mukund Kulkarni, Sanjiv Moharil
Photoluminescence, and optically stimulated luminescence in ZnB2 X4 (B; Li,Na,K: X; Cl,Br) compounds doped with Cu(+) or Ag(+) were studied. Double humped emission bands attributable to the activators were observed in all the samples. The observed photoluminescence of Cu(+) and Ag(+) could be identified with 3d(9) 4s(1) ↔3d(10) and 4d(9) 5s(1) ↔5d(10) transitions respectively. The longer wavelength band (400-500 nm range) could be attributed to the Cu(+) or Ag(+) ion replacing alkali ion at the octahedral alkali site whereas short wavelength band (340-400 nm range) is attributed to a Cu or Ag ion at tetrahedral zinc site...
August 17, 2017: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/28812880/an-exceptionally-narrow-band-gap-%C3%A2-4-ev-silicate-predicted-in-the-cubic-perovskite-structure-basio3
#7
Hidenori Hiramatsu, Hitoshi Yusa, Ryo Igarashi, Yasuo Ohishi, Toshio Kamiya, Hideo Hosono
The electronic structures of 35 A(2+)B(4+)O3 ternary cubic perovskite oxides, including their hypothetical chemical compositions, were calculated by a hybrid functional method with the expectation that peculiar electronic structures and unique carrier transport properties suitable for semiconductor applications would be hidden in high-symmetry cubic perovskite oxides. We found unique electronic structures of Si-based oxides (A = Mg, Ca, Sr, and Ba, and B = Si). In particular, the unreported cubic BaSiO3 has a very narrow band gap (4...
August 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28809934/long-term-exposure-to-air-pollution-and-the-incidence-of-parkinson-s-disease-a-nested-case-control-study
#8
Chiu-Ying Chen, Hui-Jung Hung, Kuang-Hsi Chang, Chung Y Hsu, Chih-Hsin Muo, Chon-Haw Tsai, Trong-Neng Wu
BACKGROUND: Previous studies revealed that chronic exposure to air pollution can significantly increase the risk of the development of Parkinson's disease (PD), but this relationship is inconclusive as large-scale prospective studies are limited and the results are inconsistent. Therefore, the purpose of this study was to ascertain the adverse health effects of air pollution exposure in a nationwide population using a longitudinal approach. MATERIALS AND METHODS: We conducted a nested case-control study using the National Health Insurance Research Dataset (NHIRD), which consisted of 1,000,000 beneficiaries in the National Health Insurance Program (NHI) in the year 2000 and their medical records from 1995 to 2013 and using public data on air pollution concentrations from monitoring stations across Taiwan released from the Environmental Protection Administration to identify people with ages ≥ 40 years living in areas with monitoring stations during 1995-1999 as study subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28806739/combined-effects-of-o3-and-uv-radiation-on-secondary-metabolites-and-endogenous-hormones-of-soybean-leaves
#9
Bing Mao, Hong Yin, Yan Wang, Tian-Hong Zhao, Rong-Rong Tian, Wei Wang, Jia-Shu Ye
Enhanced ultraviolet radiation (UV) and elevated tropospheric ozone (O3) may individually cause reductions in the growth and productivity of important agricultural crops. However, research regarding their combined effects on important agricultural crops is still scarce, especially on changes in secondary metabolites and endogenous hormones, which are important protective substances and signal components that control plant responses to environment stresses. In this study, using an experimental setup of open top chambers, we monitored the responses of seed yield per plant, leaf secondary metabolites and leaf endogenous hormones under the stress of elevated O3 and enhanced UV radiation individually, as well as their combined stress...
2017: PloS One
https://www.readbyqxmd.com/read/28806682/photolytic-insertion-of-albumin-on-activated-carbon-modified-with-ozone
#10
Regina de Fátima Peralta Muniz Moreira, Eduardo Humeres, Carolina Berger, M Isabel Fernández, J A Santaballa, Moisés Canle
254nm photolyses of bovine serum albumin [BSA] in aqueous solutions, were carried out in the presence of activated carbons modified by reaction with ozone. The photolyses were monitored by fluorescence spectroscopy and UV spectrophotometry, and the products were characterized by elemental analysis, FTIR, TGA, total organic carbon analyses [TOC], and XPS. The ozonation reaction was carried out at room temperature with O3 under dry and wet conditions. The carbon characterization showed that the reaction increased the amount of epoxide and carbonyl groups on the carbon matrix...
August 2, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28806070/high-levels-of-daytime-molecular-chlorine-and-nitryl-chloride-at-a-rural-site-on-the-north-china-plain
#11
Xiaoxi Liu, Hang Qu, Lewis Gregory Huey, Yuhang Wang, Steven Sjostedt, Limin Zeng, Keding Lu, Yusheng Wu, Min Hu, Min Shao, Tong Zhu, Yuanhang Zhang
Molecular chlorine (Cl2) and nitryl chloride (ClNO2) concentrations were measured using chemical ionization mass spectrometry at a rural site over the North China Plain during June 2014. High levels of daytime Cl2 up to ~450 pptv were observed. The average diurnal Cl2 mixing ratios showed a maximum around noon at ~100 pptv. ClNO2 exhibited a strong diurnal variation with early morning maxima reaching ppbv levels and afternoon minima sustained above 60 pptv. A moderate correlation (R(2)=0.31) between Cl2 and sulfur dioxide was observed, perhaps indicating a role for power plant emissions in the generation of the observed chlorine...
August 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28805371/wavelength-resolved-photon-fluxes-of-indoor-light-sources-implications-for-hox-production
#12
Shawn Finley Kowal, Seth Robert Allen, Tara F Kahan
Photochemistry is a largely-unconsidered potential source of reactive species such as hydroxyl and peroxy radicals (OH and HO2, "HOx") indoors. We present measured wavelength-resolved photon fluxes and distance dependences of indoor light sources including halogen, incandescent, and compact fluorescent lights (CFL) commonly used in residential buildings; fluorescent tubes common in industrial and commercial settings; and sunlight entering buildings through windows. We use these measurements to predict indoor HOx production rates from the photolysis of nitrous acid (HONO), hydrogen peroxide (H2O2), ozone (O3), formaldehyde (HCHO) and acetaldehyde (CH3CHO)...
August 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28804526/solid-state-ionics-a-japan-perspective
#13
Osamu Yamamoto
The 70-year history of scientific endeavor of solid state ionics research in Japan is reviewed to show the contribution of Japanese scientists to the basic science of solid state ionics and its applications. The term 'solid state ionics' was defined by Takehiko Takahashi of Nagoya University, Japan: it refers to ions in solids, especially solids that exhibit high ionic conductivity at a fairly low temperature below their melting points. During the last few decades of exploration, many ion conducting solids have been discovered in Japan such as the copper-ion conductor Rb4Cu16I7Cl13, proton conductor SrCe1-x Y x O3, oxide-ion conductor La0...
2017: Science and Technology of Advanced Materials
https://www.readbyqxmd.com/read/28804491/phylloremediation-of-air-pollutants-exploiting-the-potential-of-plant-leaves-and-leaf-associated-microbes
#14
REVIEW
Xiangying Wei, Shiheng Lyu, Ying Yu, Zonghua Wang, Hong Liu, Dongming Pan, Jianjun Chen
Air pollution is air contaminated by anthropogenic or naturally occurring substances in high concentrations for a prolonged time, resulting in adverse effects on human comfort and health as well as on ecosystems. Major air pollutants include particulate matters (PMs), ground-level ozone (O3), sulfur dioxide (SO2), nitrogen dioxides (NO2), and volatile organic compounds (VOCs). During the last three decades, air has become increasingly polluted in countries like China and India due to rapid economic growth accompanied by increased energy consumption...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28801779/tof-ms-investigation-of-nickel-oxide-cvd
#15
Anastasia S Kondrateva, Maxim V Mishin, Sergey E Alexandrov
NiO layers were deposited by metal-organic chemical vapor deposition using bis-(ethylcyclopentadienyl) nickel (EtCp)2Ni and oxygen or ozone. As a continuation of kinetic study of NiO MOCVD the gas-phase, transformations of (EtCp)2Ni were studied in the temperature range of 380-830 K. Time of reactions corresponding to the residence time of the gas stream in hot zone of the reactor was about 0.1 s under conditions studied. The interaction of (EtCp)2Ni with oxygen started at 450 K and its conversion rate reached the maximum at 700 K...
August 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28800413/the-impact-of-climate-change-and-emissions-control-on-future-ozone-levels-implications-for-human-health
#16
Jennifer D Stowell, Young-Min Kim, Yang Gao, Joshua S Fu, Howard H Chang, Yang Liu
Overwhelming evidence has shown that, from the Industrial Revolution to the present, human activities influence ground-level ozone (O3) concentrations. Past studies demonstrate links between O3 exposure and health. However, knowledge gaps remain in our understanding concerning the impacts of climate change mitigation policies on O3 concentrations and health. Using a hybrid downscaling approach, we evaluated the separate impact of climate change and emission control policies on O3 levels and associated excess mortality in the US in the 2050s under two Representative Concentration Pathways (RCPs)...
August 8, 2017: Environment International
https://www.readbyqxmd.com/read/28799748/exceptionally-high-piezoelectric-coefficient-and-low-strain-hysteresis-in-grain-oriented-ba-ca-ti-zr-o3-through-integrating-crystallographic-texture-and-domain-engineering
#17
Yingchun Liu, Yunfei Chang, Fei Li, Bin Yang, Yuan Sun, Jie Wu, Shantao Zhang, Ruixue Wang, Wenwu Cao
Both low strain hysteresis and high piezoelectric performance are required for practical applications in precisely controlled piezoelectric devices and systems. Unfortunately, enhanced piezoelectric properties were usually obtained with the presence of a large strain hysteresis in BaTiO3 (BT)-based piezoceramics. In this work, we propose to integrate crystallographic texturing and domain engineering strategies into BT-based ceramics to resolve this challenge. [001]c grain-oriented (Ba0.94Ca0.06)(Ti0.95Zr0.05)O3 (BCTZ) ceramics with a texture degree as high as 98...
August 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28795167/effective-uv-ozone-irradiation-method-for-decontamination-of-hydroxyapatite-surfaces
#18
Keisuke Yasuda, Yohei Okazaki, Yasuhiko Abe, Kazuhiro Tsuga
The purpose of this study was to establish whether UV/ozone (O3) irradiation method can effectively decontaminate hydroxyapatite surfaces, including those modified by the treatment with 30% phosphoric acid solution through morphological and chemical surface analyses (surface roughness, X-ray photoelectron spectroscopy and wettability), and to evaluate the in vitro response of osteoblast-like MC3T3-E1 cells to the modified hydroxyapatite surface decontaminated via this method. The amount of carbon and the contact angle of hydroxyapatite surfaces were significantly decreased by UV/O3 irradiation that lasted for ≥ 5 and ≥ 3 min, respectively (P < 0...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28795097/application-of-cu-mg-al-chitosan-o3-system-for-landfill-leachate-treatment-experimental-and-economic-evaluation-data
#19
Dariush Ranjbar Vakilabadi, Bahman Ramavandi, Amir Hessam Hassani, Ghasemali Omrani
Landfill leachate contains heavy organic pollutants, which pollute ground and surface waters. This dataset applied a newly-introduced catalyst, Cu/Mg/Al-chitosan, for a landfill leachate treatment during a catalytic oxidation. The data of chemical oxygen demand (COD) and colour removal from the leachate was reported as a function of reaction time (20-460 min). Economic evaluation data of the Cu/Mg/Al-chitosan-O3 system showed that the current cost of the system for treating each m(3) leachate is US$ 18 and for catalyst synthesis is US$ 54...
October 2017: Data in Brief
https://www.readbyqxmd.com/read/28794889/ambient-ozone-and-asthma-hospital-admissions-in-texas-a-time-series-analysis
#20
Julie E Goodman, Ke Zu, Christine T Loftus, Ge Tao, Xiaobin Liu, Sabine Lange
BACKGROUND: Many studies have evaluated associations between asthma emergency department (ED) visits, hospital admissions (HAs), and ambient ozone (O3) across the US, but not in Texas. We investigated the relationship between O3 and asthma HAs, and the potential impacts of outdoor pollen, respiratory infection HAs, and the start of the school year in Texas. METHODS: We obtained daily time-series data on asthma HAs and ambient O3 concentrations for Dallas, Houston, and Austin, Texas for the years 2003-2011...
2017: Asthma research and practice
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