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https://www.readbyqxmd.com/read/28487836/allergic-conjunctivitis-in-asia
#1
REVIEW
Bernard Yu-Hor Thong
Allergic conjunctivitis (AC), which may be acute or chronic, is associated with rhinitis in 30%-70% of affected individuals, hence the term allergic rhinoconjunctivitis (AR/C). Seasonal and perennial AC is generally milder than the more chronic and persistent atopic and vernal keratoconjunctivitis. Natural allergens like house dust mites (HDM), temperate and subtropical grass and tree pollen are important triggers that drive allergic inflammation in AC in the Asia-Pacific region. Climate change, environmental tobacco smoke, pollutants derived from fuel combustion, Asian dust storms originating from central/north Asia and phthalates may also exacerbate AR/C...
April 2017: Asia Pacific Allergy
https://www.readbyqxmd.com/read/28475960/health-risk-assessment-of-exposure-to-the-middle-eastern-dust-storms-in-the-iranian-megacity-of-kermanshah
#2
G Goudarzi, S M Daryanoosh, H Godini, P K Hopke, P Sicard, A De Marco, H D Rad, A Harbizadeh, F Jahedi, M J Mohammadi, J Savari, S Sadeghi, Z Kaabi, Y Omidi Khaniabadi
OBJECTIVE: This study assessed the effects of particulate matter (PM), equal or less than 10 μm in aerodynamic diameter (PM10), from the Middle-Eastern Dust events on public health in the megacity of Kermanshah (Iran). STUDY DESIGN: This study used epidemiological modeling and monitored ambient air quality data to estimate the potential PM10 impacts on public health. METHODS: The AirQ2.2.3 model was used to calculate mortality and morbidity attributed to PM10 as representative of dust events...
May 2, 2017: Public Health
https://www.readbyqxmd.com/read/28468126/airborne-dust-absorption-by-semi-arid-forests-reduces-pm-pollution-in-nearby-urban-environments
#3
Daphna Uni, Itzhak Katra
Dust storms are a major source of global atmospheric particulate matter (PM), having significant impacts on air pollution and human health. During dust storms, daily averages of atmospheric PM concentrations can reach high levels above the World Health Organization (WHO) guideline for air quality. The objective of this study was to explore the impact of forests on PM distribution following dust events in a region that is subjected to frequent dust storms (Northern Negev, Israel). Dust was measured in a forest transect including urban environments that are nearby the forest and at a distal location...
April 29, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28432864/plutonium-in-the-atmosphere-a-global-perspective
#4
REVIEW
P Thakur, H Khaing, S Salminen-Paatero
A number of potential source terms have contributed plutonium isotopes to the atmosphere. The atmospheric nuclear weapon tests conducted between 1945 and 1980 and the re-entry of the burned SNAP-9A satellite in 1964, respectively. It is generally believed that current levels of plutonium in the stratosphere are negligible and compared with the levels generally found at surface-level air. In this study, the time trend analysis and long-term behavior of plutonium isotopes ((239+240)Pu and (238)Pu) in the atmosphere were assessed using historical data collected by various national and international monitoring networks since 1960s...
April 19, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28422476/origin-dependent-variations-in-the-atmospheric-microbiome-community-in-eastern-mediterranean-dust-storms
#5
Daniella Gat, Yinon Mazar, Eddie Cytryn, Yinon Rudich
Microorganisms carried by dust storms are transported through the atmosphere and may affect human health and the functionality of microbial communities in various environments. Characterizing the dust-borne microbiome in dust storms of different origins or that followed different trajectories provides valuable data to improve our understanding of global health and environmental impacts. We present a comparative study on the diversity of dust-borne bacterial communities in dust storms from three distinct origins (North Africa, Syria and Saudi Arabia) and compare them with local bacterial communities sampled on clear days, all collected at a single location: Rehovot, Israel...
May 5, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28420157/the-effects-of-pm2-5-from-asian-dust-storms-on-emergency-room-visits-for-cardiovascular-and-respiratory-diseases
#6
Ssu-Ting Liu, Chu-Yung Liao, Cheng-Yu Kuo, Hsien-Wen Kuo
A case-crossover study examined how PM2.5 from Asian Dust Storms (ADS) affects the number of emergency room (ER) admissions for cardiovascular diseases (CVDs) and respiratory diseases (RDs). Our data indicated that PM2.5 concentration from ADS was highly correlated with ER visits for CVDs and RDs. The odds ratios (OR) increased by 2.92 (95% CI: 1.22-5.08) and 1.86 (95% CI: 1.30-2.91) per 10 µg/m³ increase in PM2.5 levels, for CVDs and RDs, respectively. A 10 µg/m³ increase in PM2.5 from ADSs was significantly associated with an increase in ER visits for CVDs among those 65 years of age and older (an increase of 2...
April 16, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28409432/short-term-effects-of-air-pollution-on-daily-hospital-admissions-for-cardiovascular-diseases-in-western-china
#7
Yuxia Ma, Haipeng Zhang, Yuxin Zhao, Jianding Zhou, Sixu Yang, Xiaodong Zheng, Shigong Wang
Controlling the confounding factors on cardiovascular diseases, such as long-time trend, calendar effect, and meteorological factors, a generalized additive model (GAM) was used to investigate the short-term effects of air pollutants (PM10, SO2, and NO2) on daily cardiovascular admissions from March 1st to May 31st during 2007 to 2011 in Lanzhou, a heavily polluted city in western China. The influences of air pollutants were examined with different lag structures, and the potential effect modification by dust storm in spring was also investigated...
April 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28382377/health-benefits-of-pm10-reduction-in-iran
#8
Mohammad Bagherian Marzouni, Mahsa Moradi, Alireza Zarasvandi, Shayan Akbaripoor, Mohammad Sadegh Hassanvand, Abdolkazem Neisi, Gholamreza Goudarzi, Mohammad Javad Mohammadi, Reza Sheikhi, Majid Kermani, Mohammad Shirmardi, Abolfazl Naimabadi, Moeen Gholami, Saeed Pourkarim Mozhdehi, Mehdi Esmaeili, Kian Barari
Air pollution contains a complex mixture of poisonous compounds including particulate matter (PM) which has wide spectrum of adverse health effects. The main purpose of this study was to estimate the potential health impacts or benefits due to any changes in annual PM10 level in four major megacities of Iran. The required data of PM10 for AirQ software was collected from air quality monitoring stations in four megacities of Iran. The preprocessing was carried out using macro coding in excel environment. The relationship between different presumptive scenarios and health impacts was determined...
April 5, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28357800/comparison-of-normal-and-dusty-day-impacts-on-fractional-exhaled-nitric-oxide-and-lung-function-in-healthy-children-in-ahvaz-iran
#9
Abdolkazem Neisi, Mehdi Vosoughi, Esmaeil Idani, Gholamreza Goudarzi, Afshin Takdastan, Ali Akbar Babaei, Kambiz Ahmadi Ankali, Sadegh Hazrati, Maryam Haddadzadeh Shoshtari, Iman Mirr, Heidar Maleki
Children are the vulnerable group at risk of adverse health effects related to air pollution due to dust storm in Ahvaz. The purpose of this study was to compare the values of fractional exhaled nitric oxide (FENO) and lung functions as parameters of adverse health effects of particulate matter (PM) in dusty and normal (non-dusty) days in elementary schoolchildren. The study was conducted among elementary school students in Ahvaz. The healthy elementary schoolchildren (N = 105) were selected from different districts for FENO and lung function sampling during the dusty and normal days...
May 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28347611/ambient-particulate-matter-and-carbon-monoxide-at-an-urban-site-of-india-influence-of-anthropogenic-emissions-and-dust-storms
#10
Ravi Yadav, L K Sahu, G Beig, Nidhi Tripathi, S N A Jaaffrey
Continuous measurements of PM2.5, PM10 and CO were conducted at an urban site of Udaipur in India from April 2011 to March 2012. The annual mean concentrations of PM2.5, PM10 and CO were 42 ± 17 μg m(-3), 114 ± 31 μg m(-3) and 343 ± 136 ppbv, respectively. Concentrations of both particulate and CO showed high values during winter/pre-monsoon (dry) period and lowest in the monsoon season (wet). Local anthropogenic emission and long-range transport from open biomass burning sources along with favourable synoptic meteorology led to elevated levels of pollutants in the dry season...
March 24, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28336085/the-dual-effect-of-vegetation-green-up-date-and-strong-wind-on-the-return-period-of-spring-dust-storms
#11
Jieling Feng, Ning Li, Zhengtao Zhang, Xi Chen
Vegetation phenology changes have been widely applied in the disaster risk assessments of the spring dust storms, and vegetation green-up date shifts have a strong influence on dust storms. However, the effect of earlier vegetation green-up dates due to climate warming on the evaluation of dust storms return periods remains an important, but poorly understood issue. In this study, we evaluate the spring dust storm return period (February to June) in Inner Mongolia, Northern China, using 165 observations of severe spring dust storm events from 16 weather stations, and regional vegetation green-up dates as an integrated factor from NDVI (Normalized Difference Vegetation Index), covering a period from 1982 to 2007, by building the bivariate Copula model...
March 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28283029/legal-immigrants-invasion-of-alien-microbial-communities-during-winter-occurring-desert-dust-storms
#12
Tobias Weil, Carlotta De Filippo, Davide Albanese, Claudio Donati, Massimo Pindo, Lorenzo Pavarini, Federico Carotenuto, Massimiliano Pasqui, Luisa Poto, Jacopo Gabrieli, Carlo Barbante, Birgit Sattler, Duccio Cavalieri, Franco Miglietta
BACKGROUND: A critical aspect regarding the global dispersion of pathogenic microorganisms is associated with atmospheric movement of soil particles. Especially, desert dust storms can transport alien microorganisms over continental scales and can deposit them in sensitive sink habitats. In winter 2014, the largest ever recorded Saharan dust event in Italy was efficiently deposited on the Dolomite Alps and was sealed between dust-free snow. This provided us the unique opportunity to overcome difficulties in separating dust associated from "domestic" microbes and thus, to determine with high precision microorganisms transported exclusively by desert dust...
March 10, 2017: Microbiome
https://www.readbyqxmd.com/read/28251534/do-rainfalls-wash-out-anthropogenic-airborne-magnetic-particulates
#13
Amarjargal Baatar, Raegyung Ha, Yongjae Yu
We separated dust particles from the mesh-filtered sets of rainwaters collected on rainy days with daily precipitations exceeding 10 mm per day. A total of 136 rainwaters (or snow during the winter season) samples collected from February 2009 to February 2013 were analyzed. In particular, 33 out of 136 rainwaters were collected during or just after the Asian dust storm (ADS) events. Values of pH were relatively higher during warmer seasons. During ADS events, precipitations were alkaline, possibly due to abundant supply of alkaline minerals from the deserts source area to the precipitation...
April 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28241509/the-association-between-ambient-air-pollution-and-allergic-rhinitis-further-epidemiological-evidence-from-changchun-northeastern-china
#14
Bo Teng, Xuelei Zhang, Chunhui Yi, Yan Zhang, Shufeng Ye, Yafang Wang, Daniel Q Tong, Binfeng Lu
With the continuous rapid urbanization process over the last three decades, outdoors air pollution has become a progressively more serious public health hazard in China. To investigate the possible associations, lag effects and seasonal differences of urban air quality on respiratory health (allergic rhinitis) in Changchun, a city in Northeastern China, we carried out a time-series analysis of the incidents of allergic rhinitis (AR) from 2013 to 2015. Environmental monitoring showed that PM2.5 and PM10 were the major air pollutants in Changchun, followed by SO₂, NO₂ and O₃...
February 23, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208496/extension-of-discrete-tribocharging-models-to-continuous-size-distributions
#15
Dylan Carter, Christine Hartzell
Triboelectric charging, the phenomenon by which electrical charge is exchanged during contact between two surfaces, has been known to cause significant charge separation in granular mixtures, even between chemically identical grains. This charging is a stochastic size-dependent process resulting from random collisions between grains. The prevailing models and experimental results suggest that, in most cases, larger grains in a mixture of dielectric grains acquire a positive charge, while smaller grains charge negatively...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28102779/long-term-dust-aerosol-production-from-natural-sources-in-iceland
#16
Pavla Dagsson-Waldhauserova, Olafur Arnalds, Haraldur Olafsson
Iceland is a volcanic island in the North Atlantic Ocean with maritime climate. In spite of moist climate, large areas are with limited vegetation cover where >40% of Iceland is classified with considerable to very severe erosion and 21% of Iceland is volcanic sandy deserts. Not only do natural emissions from these sources influenced by strong winds affect regional air quality in Iceland ("Reykjavik haze"), but dust particles are transported over the Atlantic ocean and Arctic Ocean >1000 km at times. The aim of this paper is to place Icelandic dust production area into international perspective, present long-term frequency of dust storm events in northeast Iceland, and estimate dust aerosol concentrations during reported dust events...
February 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28029452/seasonal-and-spatial-differences-in-source-contributions-to-pm2-5-in-wuhan-china
#17
Ying Xiong, Jiabin Zhou, James J Schauer, Wenyang Yu, Yan Hu
Fine particle (PM2.5) samples were collected in 2011 and 2012 simultaneously at three sites in Wuhan in an industrial area (ID), downtown Wuhan (DT), and the Wuhan botanical gardens (BG). The annual average concentration of PM2.5 was highest in the industrial area at 180μgm(-3) and lowest in the botanical gardens, with an average of 93μgm(-3). The average downtown PM2.5 concentration was 113μgm(-3). All sites had concentrations well above the World Health Organization (WHO) guidelines and the Chinese air quality standard...
October 28, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28018984/application-of-the-weps-and-sweep-models-to-non-agricultural-disturbed-lands
#18
J Tatarko, S J van Donk, J C Ascough, D G Walker
Wind erosion not only affects agricultural productivity but also soil, air, and water quality. Dust and specifically particulate matter ≤10 μm (PM-10) has adverse effects on respiratory health and also reduces visibility along roadways, resulting in auto accidents. The Wind Erosion Prediction System (WEPS) was developed by the USDA-Agricultural Research Service to simulate wind erosion and provide for conservation planning on cultivated agricultural lands. A companion product, known as the Single-Event Wind Erosion Evaluation Program (SWEEP), has also been developed which consists of the stand-alone WEPS erosion submodel combined with a graphical interface to simulate soil loss from single (i...
December 2016: Heliyon
https://www.readbyqxmd.com/read/28001122/spatial-and-temporal-variability-in-desert-dust-and-anthropogenic-pollution-in-iraq-1997-2010
#19
A Alexandra Chudnovsky, Petros Koutrakis, Alex Kostinski, Susan P Proctor, Eric Garshick
Satellite imaging has emerged as a method for monitoring regional air pollution and detecting areas of high dust concentrations. Unlike ground observations, continuous data monitoring is available with global coverage of terrestrial and atmospheric components. In this study we test the utility of different sources of satellite data to assess air pollution concentrations in Iraq. SeaWiFS and MODIS Deep Blue (DB) aerosol optical depth (AOD) products were evaluated and used to characterize the spatial and temporal pollution levels from the late 1990s through 2010...
January 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/27958495/instantaneous-influence-of-dust-storms-on-the-optical-scattering-property-of-the-ocean-a-case-study-in-the-yellow-sea-china
#20
Shuguo Chen, Tinglu Zhang, Wenzhong Chen, Jinhui Shi, Lianbo Hu, Qingjun Song
Asian dust storms originating from arid or semi-arid regions of China or her adjacent regions have important impact on the atmosphere and water composition, and ecological environment of the Eastern China Seas. This research used data collected in the middle of the South Yellow Sea, China, during a dust storm event from 23 April to 24 April 2006 to analyze the instantaneous influence of dust storms on optical scattering properties, which are closely related to particle characteristics. The analysis results showed that the dust storm had a remarkable influence on the optical scattering property in the upper mixed layer of water, and dust particles drily deposited from the dust storm with an aerosol optical depth of nearly 2...
December 12, 2016: Optics Express
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