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https://www.readbyqxmd.com/read/28938211/current-surface-ozone-concentrations-significantly-decrease-wheat-growth-yield-and-quality
#1
Håkan Pleijel, Malin C Broberg, Johan Uddling, Gina Mills
Tropospheric ozone is known to adversely affect crops and other vegetation. Most studies have focussed on the effects of elevated ozone levels vs. present ambient. We investigated the effect of present ambient surface ozone (O3) concentrations vs. preindustrial on a range of agronomically important response variables in field-grown wheat, using results from 33 experiments (representing 9 countries, 3 continents, 17 cultivars plus one set of 4 cultivars) having both charcoal filtered (CF) and non-filtered (NF) air treatments...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28937752/inverse-association-between-ambient-sulfur-dioxide-exposure-and-semen-quality-in-wuhan-china
#2
Yuewei Liu, Yun Zhou, Jixuan Ma, Wei Bao, Jingjing Li, Ting Zhou, Xiuqing Cui, Zhe Peng, Hai Zhang, Min Feng, Yuan Yuan, Yuanqi Chen, Xiji Huang, Yonggang Li, Yonggang Duan, Tingming Shi, Lei Jin, Li Wu
Evidence concerning the association between ambient gaseous air pollutant exposures and semen quality is sparse, and findings in previous studies remain largely inconsistent. We enrolled 1759 men with 2184 semen examinations at a large reproductive medical center in Wuhan, China between 2013 and 2015. Inverse distance weighting interpolation was performed to estimate individual exposures to SO2, NO2, CO and O3 during the entire period (lag 0-90 days) and key periods (lag 0-9, 10-14, 70-90 days) of sperm development...
September 22, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28937286/comparing-subjective-and-objective-image-quality-at-two-different-radiation-exposure-ranges-of-the-paranasal-sinus-ct-examinations-using-a-volumetric-320-row-detector-ct-system
#3
Berhan Pirimoglu, Recep Sade, Muhammed Sedat Sakat, Hayri Ogul, Suat Eren, Mecit Kantarci
OBJECTIVES: To evaluate image quality of protocol including 135 kVp, 5 mAs and 80 kVp, 5 mAs in the paranasal sinus CT examinations using single volumetric 320-row multidetector CT technique. METHODS: From September to December 2016, both of our control group including 135 kVp and 5 mAs and our study group including 80 kVp and 5 mAs paranasal CT protocols were simultaneously performed on 40 patients using single volumetric 320-row multidetector CT device. Image quality for bony structures, air-filled structures and soft tissues were independently assessed for each group by three blinded observers using a 3-point grading scale (0 = not diagnostic, 1 = partially diagnostic, 2 = diagnostic)...
September 21, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28936870/constructing-efficient-and-stable-perovskite-solar-cells-via-interconnecting-perovskite-grains
#4
Xian Hou, Sumei Huang, Wei Ou-Yang, Likun Pan, Zhuo Sun, Xiaohong Chen
A high quality perovskite film with interconnected perovskite grains was obtained by incorporating terephthalic acid (TPA) additive into the perovskite precursor solution. The presence of TPA changed the crystallization kinetics of perovskite film and promoted grains lateral growth in the vicinity of crystal boundaries. As a result, the sheet-shaped perovskite was formed and covered onto the bottom grains, which made some adjacent grains partly merge together to form grains-interconnected perovskite film. The perovskite solar cells (PSCs) with TPA additive got a power conversion efficiency (PCE) of 18...
September 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28936271/comparison-of-the-volatile-organic-compound-recovery-rates-of-commercial-active-samplers-for-evaluation-of-indoor-air-quality-in-work-environments
#5
Yuichi Miyake, Masahiro Tokumura, Qi Wang, Zhiwei Wang, Takashi Amagai
The Industrial Safety and Health Law in Japan established administrative levels for volatile organic compounds (VOCs) in indoor air. In the present study, these 49 VOCs were extracted from the absorbents of commercial active samplers from Sibata Scientific Technology (carbon-bead active sampler), SKC Inc. (Anasorb CSC sorbent tube), and Gastec (bead-shaped activated carbon tube) using carbon disulfide, and the recovery rates were compared. The VOCs were added to the adsorbents at three concentration levels relative to the administrative levels (×0...
2017: Air Quality, Atmosphere, & Health
https://www.readbyqxmd.com/read/28935614/randomized-trial-of-interventions-to-improve-childhood-asthma-in-homes-with-wood-burning-stoves
#6
Curtis W Noonan, Erin O Semmens, Paul Smith, Solomon W Harrar, Luke Montrose, Emily Weiler, Marcy McNamara, Tony J Ward
BACKGROUND: Household air pollution due to biomass combustion for residential heating adversely affects vulnerable populations. Randomized controlled trials to improve indoor air quality in homes of children with asthma are limited, and no such studies have been conducted in homes using wood for heating. OBJECTIVES: Our aims were to test the hypothesis that household-level interventions, specifically improved-technology wood-burning appliances or air-filtration devices, would improve health measures, in particular Pediatric Asthma Quality of Life Questionnaire (PAQLQ) scores, relative to placebo, among children living with asthma in homes with wood-burning stoves...
September 13, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28934654/a-case-study-of-air-quality-pesticides-and-odorous-phytochemicals-on-kauai-hawaii-usa
#7
Jun Wang, Robert Boesch, Qing X Li
This study was conducted after a series of incidences occurred at Waimea Canyon Middle School on Kauai, Hawaii. Some students and staff members exhibited symptoms such as throat irritation, tearing, and dizziness. These symptoms could be associated with natural causes or human activities, which include exposures to pesticides and odorous phytochemicals. At the time of the occurrences, Cleome gynandra (known locally as stinkweed) was growing in the fields near the school and might be a potential cause of the reported symptoms...
September 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28934094/estimated-changes-in-life-expectancy-and-adult-mortality-resulting-from-declining-pm2-5-exposures-in-the-contiguous-united-states-1980-2010
#8
Neal Fann, Sun-Young Kim, Casey Olives, Lianne Sheppard
BACKGROUND: PM2.5 precursor emissions have declined over the course of several decades, following the implementation of local, state, and federal air quality policies. Estimating the corresponding change in population exposure and PM2.5-attributable risk of death prior to the year 2000 is made difficult by the lack of PM2.5 monitoring data. OBJECTIVES: We used a new technique to estimate historical PM2.5 concentrations, and estimated the effects of changes in PM2...
September 6, 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/28932237/a-new-hybrid-model-fpa-svm-considering-cointegration-for-particular-matter-concentration-forecasting-a-case-study-of-kunming-and-yuxi-china
#9
Weide Li, Demeng Kong, Jinran Wu
Air pollution in China is becoming more serious especially for the particular matter (PM) because of rapid economic growth and fast expansion of urbanization. To solve the growing environment problems, daily PM2.5 and PM10 concentration data form January 1, 2015, to August 23, 2016, in Kunming and Yuxi (two important cities in Yunnan Province, China) are used to present a new hybrid model CI-FPA-SVM to forecast air PM2.5 and PM10 concentration in this paper. The proposed model involves two parts. Firstly, due to its deficiency to assess the possible correlation between different variables, the cointegration theory is introduced to get the input-output relationship and then obtain the nonlinear dynamical system with support vector machine (SVM), in which the parameters c and g are optimized by flower pollination algorithm (FPA)...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28931957/the-k%C3%A3-htai-data-set-25-years-of-lysimetric-snow-pillow-and-meteorological-measurements
#10
P Krajči, R Kirnbauer, J Parajka, J Schöber, G Blöschl
Snow measurements at the Kühtai station in Tirol, Austria, (1920 m.a.s.l.) are described. The data set includes snow water equivalent from a 10 m(2) snow pillow, snow melt outflow from a 10 m(2) snow lysimeter placed at the same location as the pillow, meteorological data (precipitation, incoming shortwave radiation, reflected shortwave radiation, air temperature, relative air humidity, and wind speed), and other data (snow depths, snow temperatures at seven heights) from the period October 1990 to May 2015...
June 2017: Water Resources Research
https://www.readbyqxmd.com/read/28930472/light-absorption-of-secondary-organic-aerosol-composition-and-contribution-of-nitro-aromatic-compounds
#11
Mingjie Xie, Xi Chen, Michael D Hays, Michael Lewandowski, John H Offenberg, Tadeusz Edward Kleindienst, Amara Holder
Secondary organic aerosol (SOA) might affect the atmospheric radiation balance through absorbing light at shorter visible and UV wavelengths. However, the composition and optical properties of light-absorbing SOA is poorly understood. In this work, SOA filter samples were collected during individual chamber experiments with three biogenic and eight aromatic volatile organic compound (VOC) precursors in the presence of NOX and H2O2. Compared with the SOA generated using the aromatic precursors, biogenic SOA in general exhibits negligible light absorption above 350 nm; the aromatic SOA generated in the presence of NOX showed stronger light absorption than that generated with H2O2...
September 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28930146/co%C3%A2-sensing-characteristics-of-a-la%C3%A2-o%C3%A2-sno%C3%A2-stacked-structure-with-micromachined-hotplates
#12
Tatsuya Iwata, Kyosuke Matsuda, Kazuhiro Takahashi, Kazuaki Sawada
Demand for the detection of carbon dioxide (CO 2 ) is increasing in various fields, including air-quality monitoring, healthcare, and agriculture. On the other hand, smart gas sensors, in which micromachined gas sensors are integrated with driving circuits, are desirable toward the development of the society of the internet of things. In this study, micromachined hotplate-based CO 2 sensors were fabricated and their characteristics were investigated. The sensors have La 2 O 3 /SnO 2 stacked layers as a sensing material and Pt interdigitated electrodes...
September 20, 2017: Sensors
https://www.readbyqxmd.com/read/28929962/-determination-of-in-vitro-susceptibilities-of-brucella-spp-strains-against-11-different-antibacterial-gents-isolated-from-blood-cultures
#13
Recep Keşli, Hüseyin Bilgin, Halim Yılmaz
Brucellosis is a worldwide zoonotic disease and still continuous to be a major public health problem. In this study, it was aimed to identify the Brucella strains to the species level isolated from blood cultures, and to determine the rate of antimicrobial susceptibility against eleven antibacterial agents. A total of 106 Brucella spp. strains were included in the study, which were isolated from blood cultures in University of Health Sciences, Konya Training and Research Hospital, Medical Microbiology Laboratory between January 2011 and June 2013...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28929369/air-quality-study-in-the-coastal-city-of-crotone-southern-italy-hosting-a-small-size-harbor
#14
Paola Romagnoli, Francesca Vichi, Catia Balducci, Andrea Imperiali, Mattia Perilli, Lucia Paciucci, Francesco Petracchini, Angelo Cecinato
Particulate polycyclic aromatic hydrocarbons (PAHs), n-alkanes, and gaseous pollutants were collected from the harbor and the urban area of Crotone (Southern Italy) in October 2015. The atmospheric concentrations of organic substances associated to PM10 were determined daily, while gaseous pollutants (BTEX, O3, SO2, NOx, NO2, and NH3) were monitored on monthly basis by means of diffusive sampling. Total PAHs reached, on the average, 1.56 ± 0.72, 0.33 ± 0.14, and 0.59 ± 0.37 ng/m(3) at the urban monitoring stations (Fiore, Fermi) and at the harbor, respectively...
September 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28928511/color-bioactive-compounds-and-morphological-characteristics-of-encapsulated-asian-pear-juice-powder-during-spray-drying
#15
Chang-Gon Lee, Maruf Ahmed, Gui-Hun Jiang, Jong-Bang Eun
Encapsulated Asian pear juice powder was produced through spray drying using three maltodextrin levels (15, 20, and 25% w/v) and three inlet air temperatures (130, 150, and 170 °C). The impact of maltodextrin concentrations and inlet air temperatures on color, bioactive compounds, and morphological characteristics of encapsulated Asian pear juice powder were investigated. Maltodextrin concentrations and inlet air temperatures significantly influenced L(*) and b(*) values of encapsulated Asian pear juice powder...
August 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28927016/china-s-air-quality-and-respiratory-disease-mortality-based-on-the-spatial-panel-model
#16
Qilong Cao, Ying Liang, Xueting Niu
Background: Air pollution has become an important factor restricting China's economic development and has subsequently brought a series of social problems, including the impact of air pollution on the health of residents, which is a topical issue in China. Methods: Taking into account this spatial imbalance, the paper is based on the spatial panel data model PM2.5. Respiratory disease mortality in 31 Chinese provinces from 2004 to 2008 is taken as the main variable to study the spatial effect and impact of air quality and respiratory disease mortality on a large scale...
September 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28926575/does-body-image-perception-relate-to-quality-of-life-in-middle-aged-women
#17
Maria Socorro Medeiros de Morais, Rafaela Andrade do Nascimento, Mariana Carmem Apolinário Vieira, Mayle Andrade Moreira, Saionara Maria Aires da Câmara, Álvaro Campos Cavalcanti Maciel, Maria das Graças Almeida
OBJECTIVE: In Brazil, information about the influence of body image on the various life domains of women in menopausal transition is scarce. Thus, the objective of the study was to analyze the relationship between body image and quality of life in middle-aged Brazilian women. METHODS: This was a cross-sectional study of 250 women between 40 and 65 years old, living in Parnamirim/RN, Brazil, who were evaluated in relation to body image and quality of life. For body image, women were classified as: dissatisfied due to low weight, satisfied (with their body weight) and dissatisfied due to being overweight...
2017: PloS One
https://www.readbyqxmd.com/read/28925823/deep-learning-mr-imaging-based-attenuation-correction-for-pet-mr-imaging
#18
Fang Liu, Hyungseok Jang, Richard Kijowski, Tyler Bradshaw, Alan B McMillan
Purpose To develop and evaluate the feasibility of deep learning approaches for magnetic resonance (MR) imaging-based attenuation correction (AC) (termed deep MRAC) in brain positron emission tomography (PET)/MR imaging. Materials and Methods A PET/MR imaging AC pipeline was built by using a deep learning approach to generate pseudo computed tomographic (CT) scans from MR images. A deep convolutional auto-encoder network was trained to identify air, bone, and soft tissue in volumetric head MR images coregistered to CT data for training...
September 19, 2017: Radiology
https://www.readbyqxmd.com/read/28924742/characterization-of-pm2-5-in-delhi-role-and-impact-of-secondary-aerosol-burning-of-biomass-and-municipal-solid-waste-and-crustal-matter
#19
Pavan K Nagar, Dhirendra Singh, Mukesh Sharma, Anil Kumar, Viney P Aneja, Mohan P George, Nigam Agarwal, Sheo P Shukla
Delhi is one among the highly air polluted cities in the world. Absence of causal relationship between emitting sources of PM2.5 and their impact has resulted in inadequate actions. This research combines a set of innovative and state-of-the-art analytical techniques to establish relative predominance of PM2.5 sources. Air quality sampling at six sites in summer and winter for 40 days (at each site) showed alarmingly high PM2.5 concentrations (340 ± 135 μg/m(3)). The collected PM2.5 was subjected to chemical speciation including ions, metals, organic and elemental carbons which followed application of chemical mass balance technique for source apportionment...
September 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28923332/association-between-pm2-5-exposure-and-the-prognosis-of-patients-with-acute-myocardial-infraction
#20
Xiwen Zang, Xiangqian Qi
BACKGROUND: Numerous case-crossover and time series studies of PM2.5 exposure and cardiovascular health effects have been conducted, fever studies have examined the effects of PM2.5 on the outcomes of CHD, especially on acute myocardial infarction (AMI). OBJECTIVE: The objective of this research is to investigate the association between PM2.5 exposure in Tianjin City and the outcome of AMI. METHODS: We conducted a retrospective analysis of a total of 598 patients with AMI in TEDA International Cardiovascular Hospital, from Oct 28th, 2013-Apr 30th 2014...
April 2017: Archives of Medical Research
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