REFERENCE_ID int64 273 7.3M | TITLE stringlengths 4 390 | AUTHORS stringlengths 5 1.43k ⌀ | YEAR int64 1.85k 2.02k ⌀ | ABSTRACT stringlengths 1 18.4k ⌀ | CITED int64 0 1 |
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191,508 | Macroclimate associated with urbanization increases the rate of secondary succession from fallow soil | George, K; Ziska, LH; Bunce, JA; Quebedeaux, B; Hom, JL; Wolf, J; Teasdale, JR | 2,009 | To examine the impact of projected climate changes on secondary succession, we exposed the same fallow soil with a common seed bank to an in situ gradient of urban to rural macroenvironments that differed in temperature and CO2 concentration ([CO2]). This gradient was established at three locations: Baltimore city cent... | 0 |
199,441 | Effects of Elevated Atmospheric CO2 and O-3 on Hill Activity and Ca2+/Mg2+-ATPase Activity of Pinus tabulaeformis Carr | Zhao, TH; Guo, D; Wang, Y; Wang, MY; Jin, DY; Wang, JL; He, XY | 2,009 | The main photo-physiological characteristics of Pinus tabulaeformis Carr. were analyzed in open-top chambers under elevated carbon dioxide and ozone concentrations. The results indicated that the leaves net photosynthetic rates (p < 0.05), Hill activity, Ca2+/Mg2+-ATPase activity, soluble sugar and starch contents all ... | 0 |
191,536 | Non-sampling error in ozone biomonitoring: The role of operator training | Francini, A; Pellegrini, E; Lorenzini, G; Nali, C | 2,009 | Two groups assessed ozone symptoms on tobacco leaves: one was represented by young students and the other by scientists with experience in plant biology, but not experienced scorers. In the first case, results demonstrate that in the first week of exposure the extent of injury is almost always overestimated, but in the... | 0 |
785,546 | Reactive iodine species in a semi-polluted environment | Mahajan, AS; Oetjen, H; Saiz-Lopez, A; Lee, JD; Mcfiggans, GB; Plane, JMC | 2,009 | Iodine chemistry in the marine boundary layer has attracted increasing attention over the last few years because iodine oxides cause ozone destruction, change the atmospheric oxidising capacity, and can form ultrafine particles. However, the chemistry of iodine in polluted environments is not well understood: its effec... | 0 |
689,061 | Ozone risk for vegetation in the future climate of Europe based on stomatal ozone uptake calculations | Klingberg, J; Engardt, M; Uddling, J; Karlsson, PE | 2,009 | The negative impacts of surface ozone (O3) on vegetation are determined by external exposure, leaf gas exchange and plant antioxidant defence capacity, all dependent on climate and CO2 concentrations. In this study the influence of climate change on simulated stomatal O3 uptake of a generic crop and a generic deciduous... | 0 |
195,621 | Simultaneous detection of cysteine sulfenate, sulfinate, and sulfonate during cysteine interfacial ozonolysis | Enami, S; Hoffmann, MR; Colussi, AJ | 2,009 | Sulfenic acids (RSOH) are reactive intermediates in the oxidation of protein cysteines. Among cysteine oxoforms, RSOH represent redox-reversible species that can thus participate in regulation and signaling mechanisms and play key roles in enzyme catalysis and antioxidant activity. How the cysteine (CyS) thiol groups o... | 1 |
191,007 | Adverse health effects of particulate air pollution: modification by air conditioning | Bell, ML; Ebisu, K; Peng, RD; Dominici, F | 2,009 | Background: The short-term effects of particulate matter (PM) on mortality and morbidity differ by geographic location and season. Several hypotheses have been proposed for this variation, including different exposures with air conditioning (AC) versus open windows.
Methods: Bayesian hierarchical modeling was used to ... | 0 |
620,546 | Impact of large scale circulation on European summer surface ozone and consequences for modelling forecast | Szopa, S; Foret, G; Menut, L; Cozic, A | 2,009 | In this Study, we investigate the benefit for European ozone simulation of using day-to-day varying chemical boundary conditions produced by a global chemical weather forecast platform instead of climatological monthly means at the frontiers of a regional model. We performed two simulations over Europe using the region... | 0 |
668,912 | Sunlight-induced DNA damage in marine micro-organisms collected along a latitudinal gradient from 70 degrees N to 68 degrees S | Meador, JA; Baldwin, AJ; Catala, P; Jeffrey, WH; Joux, F; Moss, JA; Pakulski, JD; Stevens, R; Mitchell, DL | 2,009 | We examined ultraviolet radiation (UVR)-induced DNA damage in marine micro-organisms collected from surface seawater along a latitudinal transect in the Central Pacific Ocean from 70 degrees N to 68 degrees S. Samples were collected predawn and incubated under ambient UVR in transparent incubators at in situ temperatur... | 1 |
199,435 | Fine root dynamics of mature European beech (Fagus sylvatica L.) as influenced by elevated ozone concentrations | Mainiero, R; Kazda, M; Haberle, KH; Nikolova, PS; Matyssek, R | 2,009 | Fine root dynamics (diameter < 1 mm) in mature Fagus sylvatica, with the canopies exposed to ambient or twice-ambient ozone concentrations, were investigated throughout 2004. The focus was on the seasonal timing and extent of fine root dynamics (growth, mortality) in relation to the soil environment (water content, tem... | 0 |
667,595 | Effect of salt on ROS homeostasis, lipid peroxidation and antioxidant
mechanisms in Pinus pinaster suspension cells | Azevedo, H; Amorim-Silva, V; Tavares, R | 2,009 | ? In the Pinus genus, information on the effectiveness of oxidative defence mechanisms during exposure to salt is lacking. The effect of salt stress imposition on ROS homeostasis was investigated using maritime pine (Pinus pinaster Ait.) suspension cells as a model system.
? Cells were maintained in MS-based medium, ex... | 0 |
628,855 | Observed relationships of ozone air pollution with temperature and emissions | Bloomer, BJ; Stehr, JW; Piety, CA; Salawitch, RJ; Dickerson, RR | 2,009 | Higher temperatures caused by increasing greenhouse gas concentrations are predicted to exacerbate photochemical smog if precursor emissions remain constant. We perform a statistical analysis of 21 years of ozone and temperature observations across the rural eastern U.S. The climate penalty factor is defined as the slo... | 1 |
191,631 | Quantifying the impact of current and future tropospheric ozone on tree biomass, growth, physiology and biochemistry: A quantitative meta-analysis | Wittig, VE; Ainsworth, EA; Naidu, SL; Karnosky, DF; Long, SP | 2,009 | The northern hemisphere temperate and boreal forests currently provide an important carbon sink; however, current tropospheric ozone concentrations ([O-3]) and [O-3] projected for later this century are damaging to trees and have the potential to reduce the carbon sink strength of these forests. This meta-analysis esti... | 1 |
196,898 | The ACCENT-VOCBAS field campaign on biosphere-atmosphere interactions in a Mediterranean ecosystem of Castelporziano (Rome): site characteristics, climatic and meteorological conditions, and eco-physiology of vegetation | Fares, S; Mereu, S; Mugnozza, GS; Vitale, M; Manes, F; Frattoni, M; Ciccioli, P; Gerosa, G; Loreto, F | 2,009 | Biosphere-atmosphere interactions were investigated on a sandy dune Mediterranean ecosystem in a field campaign held in 2007 within the frame of the European Projects ACCENT and VOCBAS. The campaign was carried out in the Presidential estate of Castelporziano, a peri-urban park close to Rome. Former campaigns (e.g. BEM... | 0 |
195,858 | Air pollution and emergency department visits for cardiac and respiratory conditions: A multi-city time-series analysis | Stieb, DM; Szyszkowicz, M; Rowe, BH; Leech, JA | 2,009 | BACKGROUND: Relatively few studies have been conducted of the association between air pollution and emergency department (ED) visits, and most of these have been based on a small number of visits, for a limited number of health conditions and pollutants, and only daily measures of exposure and response.
METHODS: A ti... | 1 |
196,904 | Interactions among vegetation and ozone, water and nitrogen fluxes in a coastal Mediterranean maquis ecosystem | Gerosa, G; Finco, A; Mereu, S; Marzuoli, R; Ballarin-Denti, A | 2,009 | Ozone, water and energy fluxes were measured over a Mediterranean maquis ecosystem from 5 May until 31 July 2007 by means of the eddy covariance technique. Additional measurements of NOx fluxes were performed by the aerodynamic gradient technique. Stomatal ozone fluxes were obtained from water fluxes by a Dry Depositio... | 0 |
596,372 | Nitroxide radical TEMPO reduces ozone-induced chemokine IL-8 production in lung epithelial cells | Castagna, R; Davis, PA; Vasu, VT; Soucek, K; Cross, CE; Greci, L; Valacchi, G | 2,009 | Exposure to high levels of ozone (O(3)) damages respiratory tract epithelial cells. This research evaluated the ability of TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl), a stable nitroxide free radical, to decrease O(3)-mediated injury to a respiratory tract-derived cell line (A549 cells) by monitoring in this cell syst... | 0 |
651,831 | 25-Hydroxyvitamin D accumulation during summer in elderly women at latitude 60 boolean OR N | Burgaz, A; Akesson, A; Michaelsson, K; Wolk, A | 2,009 | Objectives. During half of the year, cutaneous synthesis of 25-hydroxyvitamin D (25(OH)D) is not detectable at northern latitudes, leaving the population dependent on other sources for optimal vitamin D status. During April to September, 25(OH)D status may be improved by solar exposure. In this study, we measured seaso... | 0 |
191,266 | Changes of main secondary metabolites in leaves of Ginkgo biloba in response to ozone fumigation | He, XY; Huang, W; Chen, W; Dong, T; Liu, CB; Chen, ZJ; Xu, S; Ruan, YN | 2,009 | To investigate the effect of elevated O-3 on the accumulation of main secondary metabolites in leaves of Ginkgo biloba L., four-year-old trees were exposed in open-top chambers with ambient air and the air with twice ambient O-3 concentration in Shenyang in 2006. Elevated O-3 increased the concentrations of terpenes, b... | 0 |
199,425 | Estimates of AOT ozone indices from time-integrated ozone data and hourly air temperature measurements in southwest Sweden | Piikki, K; Klingberg, J; Karlsson, GP; Karlsson, PE; Pleijel, H | 2,009 | Surface ozone concentration and surface air temperature was measured hourly at three coastal sites, four low elevation inland sites and two high elevation inland sites in southwestern Sweden. Diurnal ozone concentration range (DOR) and diurnal temperature range (DTR) were strongly correlated, both spatially and tempora... | 0 |
629,608 | Summary health statistics for U.S. adults: National Health Interview Survey, 2008 | Pleis, JR; Lucas, JW; Ward, BW | 2,009 | Objectives: This report presents health statistics from the 2008 National Health Interview Survey (NHIS) for the civilian noninstitutionalized adult population, classified by sex, age, race and ethnicity, education, family income, poverty status, health insurance coverage, marital status, and place and region of reside... | 1 |
603,011 | Secondary organic aerosol from alpha-pinene ozonolysis in dynamic chamber system | Chen, X; Hopke, PK | 2,009 | P>The formation of secondary organic aerosol (SOA) produced from alpha-pinene ozonolysis was examined using a dynamic chamber system that allowed the simulation of ventilated indoor environments. Particle-bound reactive species (ROS) including peroxides, peroxy radicals and ions that could penetrate into the lungs and ... | 0 |
608,055 | Amplified trace gas removal in the troposphere | Hofzumahaus, A; Rohrer, F; Keding, L; Bohn, B; Brauers, T; Chih-Chung, C; Fuchs, H; Holland, F; Kita, K; Kondo, Y; Xin, L; Shengrong, L; Min, S; Limin, Z; Wahner, A; Yuanhang, Z | 2,009 | The degradation of trace gases and pollutants in the troposphere is dominated by their reaction with hydroxyl radicals (OH). The importance of OH rests on its high reactivity, its ubiquitous photochemical production in the sunlit atmosphere, and most importantly on its regeneration in the oxidation chain of the trace g... | 1 |
622,990 | A case study of ozone production, nitrogen oxides, and the radical budget in Mexico City | Wood, EC; Herndon, SC; Onasch, TB; Kroll, JH; Canagaratna, MR; Kolb, CE; Worsnop, DR; Neuman, JA; Seila, R; Zavala, M; Knighton, WB | 2,009 | Observations at a mountain-top site within the Mexico City basin are used to characterize ozone production and destruction, nitrogen oxide speciation and chemistry, and the radical budget, with an emphasis on a stagnant air mass observed on one afternoon. The observations compare well with the results of recent photoch... | 0 |
595,937 | Effect of ozone on respiration of adult Sitophilus oryzae (L.), Tribolium castaneum (Herbst) and Rhyzopertha dominica (F.) | Lu, BQ; Ren, YL; Du, YZ; Fu, YG; Gu, J | 2,009 | The effect of ozone on the respiration of three species of adult stored-product Coleoptera was tested in an air-tight flask. Sitophilus oryzae (L.), Rhyzopertha dominica (F.) and Tribolium castaneurn (Herbst) adults were exposed to atmosphere containing 0.1, 0.2 or 0.4 mu g/ml initial ozone at 23-25 degrees C and 50% r... | 0 |
199,825 | Ozone effects on carbon metabolism in sensitive and insensitive Phaseolus cultivars | Guidi, L; Degl'Innocenti, E; Martinelli, F; Piras, M | 2,009 | An ozone treatment of 165 nL L?1 for 3 h evoked differential responses in the primary leaves of two bean cultivars of the common bean (Phaseolus vulgaris L.). While cv ?Cannellino? showed visible symptoms of injury within 24 h of exposure, no visible symptoms at all were evident in the cv ?Top Crop?. In primary leaves ... | 1 |
595,965 | Ozone Level Assessment on the Boukornine National Park (Tunisia) using Plant Biomonitoring: Influence of Altitudinal Parameter and Meteorological Conditions | Mechergui, R; Ben Mansoura, A; Laffray, X; Albouchi, A; Akrimi, N; Garrec, JP | 2,009 | The variations of tropospheric ozone levels was assessed for the first time in the Boukornine National Park (N.E. Tunisia) by detection of leaf injury development on Nicotiana tabacum "Bel-W3" exposed to environmental conditions during summer 2004. Two cultivars of tobacco (Nicotiana tabacum), Bel-W3 (sensitive) and Be... | 0 |
199,813 | Partitioning of ozone deposition over a developed maize crop between stomatal and non-stomatal uptakes, using eddy-covariance flux measurements and modelling | Lamaud, E; Loubet, B; Irvine, M; Stella, P; Personne, E; Cellier, P | 2,009 | Ozone (O3) flux measurements, obtained by eddy-covariance technique, over a developed maize crop were used to partition the overall O3 deposition between stomatal and non-stomatal uptakes. Data were analysed using a big-leaf model, which was developed from current knowledge on O3 deposition. The classical parameters us... | 0 |
199,899 | Air pollution and health: A European and North American approach (APHENA) | Katsouyanni, K; Samet, JM; Anderson, HR; Atkinson, R; Le Tertre, A; Medina, S; Samoli, E; Touloumi, G; Burnett, RT; Krewski, D; Ramsay, T; Dominici, F; Peng, RD; Schwartz, J; Zanobetti, A | 2,009 | This report describes a unique collaboration among investigators from Europe, the United States, and Canada using existing data from three geographic areas and supported by HEI in collaboration with the European Commission. APHENA offered a large and diverse data set with which to address methodological as well as scie... | 1 |
179,945 | Neurobehavioral effects of ambient air pollution on cognitive performance in US adults | Chen, JC; Schwartz, J | 2,009 | Background:In vivo animal experiments demonstrate neurotoxicity of exposures to particulate matter (PM) and ozone, but only one small epidemiological study had linked ambient air pollution with central nervous system (CNS) functions in children.
Objectives: To examine the neurobehavioral effects associated with long-te... | 1 |
191,559 | Ozone affects shikimate pathway transcripts and monomeric lignin composition in European beech (Fagus sylvatica L.) | Betz, GA; Knappe, C; Lapierre, C; Olbrich, M; Welzl, G; Langebartels, C; Heller, W; Sandermann, H; Ernst, D | 2,009 | The shikimate pathway plays a pivotal role in the formation of aromatic secondary compounds in plants. It finally leads to the formation of, for example, stilbenes, flavonoids, and lignins. Ozone effects on transcript levels of the shikimate pathway were studied in leaves of European beech saplings in the greenhouse (3... | 0 |
602,060 | Association between PM10 and O3 levels and hospital visits for cardiovascular diseases in Bangkok, Thailand | Buadong, D; Jinsart, W; Funatagawa, I; Karita, K; Yano, E | 2,009 | Background: The association between air pollution and cardiovascular diseases is well known, but previous studies only assessed mortality and hospital admissions in North America, Europe, and Northeast Asia. Few studies have been conducted in less-developed countries in regions with a tropical climate. This study evalu... | 1 |
102,164 | Ozone exposure and impacts on vegetation in the Nordic and Baltic countries | Karlsson, PE; Pleijel, H; Simpson, D | 2,009 | Ozone concentrations are generally considerably lower over northern Europe as compared with continental and southern Europe. However, ozone becomes toxic for vegetation mainly after it has been taken up into the leaf interior through the stomata. The rates of ozone uptake into the leaves are, somewhat simplified, the p... | 0 |
597,507 | Promotion of cardiovascular disease by exposure to the air pollutant ozone | Cole, MP; Freeman, BA | 2,009 | null | 1 |
199,314 | Increased DNA repair in Arabidopsis plants overexpressing CPD photolyase | Kaiser, G; Kleiner, O; Beisswenger, C; Batschauer, A | 2,009 | Ultraviolet-B (UV-B, 280-320 nm) radiation may have severe negative effects on plants including damage to their genetic information. UV protection and DNA-repair mechanisms have evolved to either avoid or repair such damage. Since autotrophic plants are dependent on sunlight for their energy supply, an increase in the ... | 0 |
195,237 | O3 sensitivity in a potential C4 bioenergy crop: Sugarcane in California | Grantz, DA; Vu, HB | 2,009 | The C4 perennial grasses have many potential virtues as bioenergy crops?high productivity and water use efficiency, multiyear crop cycle that minimizes replanting costs, and wide environmental adaptation. In the productive San Joaquin Valley (SJV) of California, these species also confront high levels of ozone (O3) air... | 1 |
601,157 | Mapping of background air pollution at a fine spatial scale across the European Union | Beelen, R; Hoek, G; Pebesma, E; Vienneau, D; de Hoogh, K; Briggs, DJ | 2,009 | Background: There is a need to understand much more about the geographic variation of air pollutants. This requires the ability to extrapolate from monitoring stations to unsampled locations. The aim was to assess methods to develop accurate and high resolution maps of background air pollution across the EU. Methods: W... | 1 |
595,132 | The Polar Environment Atmospheric Research Laboratory UV?visible Ground-Based Spectrometer: First measurements of O3, NO2, BrO, and OClO columns | Fraser, A; Adams, C; Drummond, JR; Goutail, F; Manney, G; Strong, K | 2,009 | The PEARL-GBS (Polar Environment Atmospheric Research Laboratory-Ground-Based Spectrometer) was permanently installed at Eureka, Nunavut (80.05N, 86.42W) in August 2006 as part of the establishment of PEARL by CANDAC (Canadian Network for the Detection of Atmospheric Change). The instrument is a ground-based, UV?visibl... | 0 |
626,808 | Structure and activities of ectomycorrhizal and microbial communities in the rhizosphere of Fagus sylvatica under ozone and pathogen stress in a lysimeter study | Pritsch, K; Esperschuetz, J; Haesler, F; Raidl, S; Winkler, B; Schloter, M | 2,009 | The aim was to study the influence of abiotic (elevated ozone) or biotic stress (Phytophthora citricola) or their combination on soil biological components and processes in the rhizosphere of young beech trees. Ectomycorrhizal and overall microbial community composition was studied at two soil depths in a lysimeter exp... | 1 |
191,589 | Ozone sensitivity and ethylenediurea protection in ash trees assessed by JIP chlorophyll a fluorescence transient analysis | Contran, N; Poletti, E; Manning, WJ; Tagliaferro, F | 2,009 | The effect of ethylenediurea (EDU) was tested using the chlorophyll (Chl) a fluorescence transient analysis, performed with JIP-test, to assess ambient ozone (O-3) effects on photosynthesis of adult trees under natural conditions. Twelve adult European ash (Fraxinus excelsior L.) trees, known to be sensitive or toleran... | 0 |
191,316 | Eddy covariance fluxes of acyl peroxy nitrates (PAN, PPN and MPAN) above a Ponderosa pine forest | Wolfe, GM; Thornton, JA; Yatavelli, RLN; Mckay, M; Goldstein, AH; Lafranchi, B; Min, KE; Cohen, RC | 2,009 | During the Biosphere Effects on AeRosols and Photochemistry EXperiment 2007 (BEARPEX-2007), we observed eddy covariance (EC) fluxes of speciated acyl peroxy nitrates (APNs), including peroxyacetyl nitrate (PAN), peroxypropionyl nitrate (PPN) and peroxymethacryloyl nitrate (MPAN), above a Ponderosa pine forest in the we... | 0 |
595,140 | Tethered balloon-based soundings of ozone, aerosols, and solar radiation near Mexico City during MIRAGE-MEX | Greenberg, JP; Guenther, AB; Turnipseed, A | 2,009 | A tethered balloon sampling system was used to measure vertical profiles of ozone, particles, and solar radiation in the atmospheric boundary layer on the northern edge of Mexico City, in March 2006 as part of the Megacity Impact on Regional and Global Environment-Mexico experiment. Several commercial sensors, designed... | 1 |
596,386 | Interstrain variation in cardiac and respiratory adaptation to repeated ozone and particulate matter exposures | Hamade, AK; Tankersley, CG | 2,009 | Increased ambient particulate matter (PM) is associated with adverse cardiovascular and respiratory outcomes, as demonstrated by epidemiology studies. Several studies have investigated the role of copollutants, such as ozone (O(3)), in this association. It is accepted that physiological adaptation involving the respira... | 1 |
195,719 | In vitro glutathione conjugation of methyl iodide in rat, rabbit, and human blood and tissues | Poet, TS; Wu, H; Corley, RA; Thrall, KD | 2,009 | Methyl iodide (MeI) is an intermediate in the manufacture of some pesticides and pharmaceuticals, and is under review for US registration as a non-ozone depleting alternative for methyl bromide for pre-plant soil fumigation. MeI is primarily metabolized via conjugation with glutathione (GSH), with further metabolism to... | 0 |
594,588 | Air pollution and hospital admissions for myocardial infarction in a tropical city: Kaohsiung, Taiwan | Cheng, MF; Tsai, SS; Yang, CY | 2,009 | This study was undertaken to determine whether there was an association between air pollutant levels and increased hospital admissions for myocardial infarction (MI) in Kaohsiung, Taiwan. Hospital admissions for MI and ambient air pollution data for Kaohsiung were obtained for the period 1996-2006. The relative risk of... | 0 |
602,928 | Indoor Air Distribution of Nitrogen Dioxide and Ozone in Urban Hospitals | Chen, HW; Chuang, CY; Lin, HT | 2,009 | Indoor air pollution has recently become a public concern in Taiwan. People recognize that indoor air quality (IAQ) may be more important than outdoor air quality because they spend over 80% of their time indoors. IAQ could affect health and comfort of building occupants. The objectives of this study are (1) to charact... | 0 |
197,800 | The ratio of cholesterol 5,6-secosterols formed from ozone and singlet oxygen offers insight into the oxidation of cholesterol in vivo | Wentworth, AD; Song, BD; Nieva, J; Shafton, A; Tripurenani, S; Wentworth, P, Jr | 2,009 | Ongoing efforts to unravel the origins of the cholesterol 5,6-secosterols (1a and 1b) in biological systems have revealed that the two known chemical routes to these oxysterols, ozonolysis of cholesterol (3) and Hock-cleavage of 5-a-hydroperoxycholesterol (4a), are distinguishable based upon the ratio of the hydrazone ... | 0 |
480,112 | Genome-wide Association Analysis Identifies PDE4D as an Asthma-Susceptibility Gene | Himes, BE; Hunninghake, GM; Baurley, JW; Rafaels, NM; Sleiman, P; Strachan, DP; Wilk, JB; Willis-Owen, SAG; Klanderman, B; Lasky-Su, J; Lazarus, R; Murphy, AJ; Soto-Quiros, ME; Avila, L; Beaty, T; Mathias, RA; Ruczinski, I; Barnes, KC; Celedon, JC; Cookson, WOC; Gauderman, WJ; Gilliland, FD; Hakonarson, H; Lange, C; Mo... | 2,009 | Asthma, a chronic airway disease with known heritability, affects more than 300 million people around the world. A genome-wide association (GWA) study of asthma with 359 cases from the Childhood Asthma Management Program (CAMP) and 846 genetically matched controls from the Illumina ICONdb public resource was performed.... | 1 |
668,935 | Correlated trait responses to multiple selection pressures in larval amphibians reveal conflict avoidance strategies | Garcia, TS; Paoletti, DJ; Blaustein, AR | 2,009 | 1. Larval amphibians frequently experience simultaneous, conflicting selection pressures from ultraviolet-B (UV-B) radiation and predation risk, two stressors that can select for opposing defence strategies. When both UV-B and predators are present, individuals can reconcile potential conflicts by correlating particula... | 1 |
616,076 | Increasing ozone in marine boundary layer inflow at the west coasts of North America and Europe | Parrish, DD; Millet, DB; Goldstein, AH | 2,009 | An effective method is presented for determining the ozone (O-3) mixing ratio in the onshore flow of marine air at the North American west coast. By combining the data available from all marine boundary layer (MBL) sites with simultaneous wind data, decadal temporal trends of MBL O3 in all seasons are established with ... | 1 |
199,791 | Historical ozone concentrations and flavonoid levels in herbarium specimens of the Antarctic moss Bryum argenteum | Ryan, KG; Burne, A; Seppelt, RD | 2,009 | Depletion of stratospheric ozone since the mid 1970s has led to significant increases in ultraviolet B (UVB) irradiation over Antarctica. The detrimental effects of UVB on plants are many, but plants produce photoprotective flavonoids that reduce cellular damage. We used herbarium samples of the moss Bryum argenteum co... | 0 |
199,223 | Assessing the impacts of current and future concentrations of surface ozone on crop yield with meta-analysis | Feng, ZZ; Kobayashi, K | 2,009 | Meta-analysis was conducted to quantitatively assess the effects of rising ozone concentrations ([O-3]) on yield and yield components of major food crops: potato, barley, wheat, rice, bean and soybean in 406 experimental observations. Yield loss of the crops under current and future [O-3] was expressed relative to the ... | 1 |
622,281 | Surface ozone background in the United States: Canadian and Mexican pollution influences | Wang, HQ; Jacob, DJ; Le Sager, P; Streets, DG; Park, RJ; Gilliland, AB; van Donkelaar, A | 2,009 | We use a global chemical transport model (GEOS-Chem) with 1 degrees x 1 degrees horizontal resolution to quantify the effects of anthropogenic emissions from Canada, Mexico, and outside North America on daily maximum 8-hour average ozone concentrations in US surface air. Simulations for summer 2001 indicate mean North ... | 1 |
191,347 | Effects of elevated O-3 and/or elevated CO2 on lipid peroxidation and antioxidant systems in ginkgo biloba leaves | Lu, T; He, XY; Chen, W; Yan, K; Zhao, TH | 2,009 | Four-year-old seedlings of Ginkgo biloba were exposed to elevated O-3, elevated CO2 and elevated O-3 plus elevated CO2 in open-top chambers (OTCs) to study the responses of antioxidant system in Ginkgo biloba leaves. No significant changes in reactive oxygen production and scavenging systems were detected in seedlings ... | 0 |
199,776 | A new method for using O18 to trace ozone deposition | Subke, JA; Toet, S; D'Haese, D; Crossman, Z; Emberson, LD; Barnes, JD; Ashmore, MR; Evershed, RP; Ineson, P | 2,009 | Isotopically labelled ozone (18O3) is an ideal tool to study the deposition of O3 to plants and soil, but no studies have made use of it due to the technical difficulties in producing isotopically enriched ozone. For 18O3 to be used in fumigation experiments, it has to be purified and stored safely prior to fumigations... | 0 |
191,329 | Effects of air pollution on biogenic volatiles and ecological interactions | Mcfrederick, QS; Fuentes, JD; Roulston, T; Kathilankal, JC; Lerdau, M | 2,009 | Chemical signals play important roles in ecological interactions but are vulnerable to perturbation by air pollution. In polluted air masses, signals may travel shorter distances before being destroyed by chemical reactions with pollutants, thus losing their specificity. To determine which scent-mediated interactions a... | 1 |
665,030 | Multimodel estimates of intercontinental source-receptor relationships for ozone pollution | Fiore, A; Dentener, F; Wild, O; Cuvelier, C; Schultz, M; Hess, P; Textor, C; Schulz, M; Doherty, R; Horowitz, L; Mackenzie, I; Sanderson, M; Shindell, D; Stevenson, D; Szopa, S; Van Dingenen, R; Zeng, G; Atherton, C; Bergmann, D; Bey, I; Carmichael, G; Collins, W; Duncan, B; Faluvegi, G; Folberth, G; Gauss, M; Gong, S;... | 2,009 | Understanding the surface O3 response over a ?receptor? region to emission changes over a foreign ?source? region is key to evaluating the potential gains from an international approach to abate ozone (O3) pollution. We apply an ensemble of 21 global and hemispheric chemical transport models to estimate the spatial ave... | 1 |
191,601 | Photosynthesis, chloroplast pigments, and antioxidants in Pinus canariensis under free-air ozone fumigation | Then, C; Herbinger, K; Luis, VC; Heerdt, C; Matyssek, R; Wieser, G | 2,009 | High O-3 levels, driving uptake and challenging defense, prevail on the Canary Islands, being associated with the hot and dry summers of the Mediterranean-type climate. Pinus canariensis is an endemic conifer species that forms forests across these islands. We investigated the effects of ozone on photosynthesis and bio... | 0 |
620,171 | Annoyance and health symptoms and their influencing factors: A population-based air pollution intervention study | Stenlund, T; Liden, E; Andersson, K; Garvill, J; Nordin, S | 2,009 | Objectives: Interventions for reducing air pollution are important means for improving public health. The role of psychological factors in understanding annoyance and health symptoms due to air pollution is limited and further investigation is required. This study aimed to investigate the effects of an intervention to ... | 0 |
694,603 | Development of exposure characterization regions for priority ambient air pollutants | Chinery, R; Walker, R | 2,009 | To evaluate the relationship between air pollution and morbidity and mortality in epidemiological studies, the exposure of populations must be defined. Generally, ambient air monitoring networks are the source of the exposure data for these studies. In this study, we developed methods to define population exposure regi... | 0 |
631,180 | Climate response to regional radiative forcing during the twentieth century | Shindell, D; Faluvegi, G | 2,009 | Regional climate change can arise from three different effects: regional changes to the amount of radiative heating that reaches the Earth?s surface, an inhomogeneous response to globally uniform changes in radiative heating and variability without a specific forcing. The relative importance of these effects is not cle... | 1 |
180,294 | Are the Short-term Effects of Air Pollution Restricted to Cardiorespiratory Diseases? | Larrieu, S; Lefranc, A; Gault, G; Chatignoux, E; Couvy, F; Jouves, B; Filleul, L | 2,009 | Short-term effects of air pollution on common morbidity are largely unknown. The authors explored links between daily levels of air pollution (nitrogen dioxide, ozone, and particulate matter less than 10 lm in diameter (PM10)) and medical home visits made for diverse reasons in Bordeaux, France, during 2000?2006. Daily... | 0 |
617,675 | Ultraviolet light exposure and skin cancer in the city of Arica, Chile | Rivas, M; Araya, MC; Duran, V; Rojas, E; Cortes, J; Calaf, GM | 2,009 | An increase in the amount of solar ultraviolet light that reaches the Earth is considered to be responsible for the worldwide increase in skin cancer. Solar ultraviolet B (UVB) light (290-320 nm) has multiple effects that call be harmful to human beings. The city of Arica in Chile receives high UV levels. This call exp... | 0 |
191,272 | Chronic exposure to increasing background ozone impairs stomatal functioning in grassland species | Mills, G; Hayes, F; Wilkinson, S; Davies, WJ | 2,009 | Two species found in temperate calcareous and mesotrophic grasslands (Dactylis glomerata and Leontodon hispidus) were exposed to eight ozone treatments spanning preindustrial to post-2100 regimes, and late-season effects on stomatal functioning were investigated. The plants were grown as a mixed community in 14 L conta... | 1 |
602,828 | Coupling aerosol-cloud-radiative processes in the WRF-Chem model: Investigating the radiative impact of elevated point sources | Chapman, EG; Gustafson, , Jr; Easter, RC; Barnard, JC; Ghan, SJ; Pekour, MS; Fast, JD | 2,009 | The local and regional influence of elevated point sources on summertime aerosol forcing and cloud-aerosol interactions in northeastern North America was investigated using the WRF-Chem community model. The direct effects of aerosols on incoming solar radiation were simulated using existing modules to relate aerosol si... | 0 |
477,937 | Investigation of NOx emissions and NOx- related chemistry in East Asia using CMAQ-predicted and GOME-derived NO2 columns | Han, KM; Song, CH; Ahn, HJ; Park, RS; Woo, JH; Lee, CK; Richter, A; Burrows, JP; Kim, JY; Hong, JH | 2,009 | In this study, NO2 columns from the US EPA Models-3/CMAQ model simulations carried out using the 2001 ACE-ASIA (Asia Pacific Regional Aerosol Characterization Experiment) emission inventory over East Asia were compared with the GOME-derived NO2 columns. There were large discrepancies between the CMAQ-predicted and GOME... | 0 |
190,276 | Do current levels of air pollution kill? The impact of air pollution on population mortality in England | Janke, K; Propper, C; Henderson, J | 2,009 | The current air quality limit values for airborne pollutants in the UK are low by historical standards and are at levels that are believed not to harm health. We assess whether this view is correct. We examine the relationship between common sources of airborne pollution and population mortality for England. We use dat... | 0 |
494,262 | Effect of chemistry-aerosol-climate coupling on predictions of future climate and future levels of tropospheric ozone and aerosols | Liao, H; Zhang, Y; Chen, WT; Raes, F; Seinfeld, JH | 2,009 | We explore the extent to which chemistry-aerosol-climate coupling influences predictions of future ozone and aerosols as well as future climate using the Goddard Institute for Space Studies (GISS) general circulation model II' with on-line simulation of tropospheric ozone-NOx-hydrocarbon chemistry and sulfate, nitrate,... | 0 |
629,680 | Formaldehyde and its relation to CO, PAN, and SO2 in the Houston-Galveston airshed | Rappengluck, B; Dasgupta, PK; Leuchner, M; Li, Q; Luke, W | 2,009 | The Houston-Galveston Airshed (HGA) is one of the major metropolitan areas in the US that is classified as a nonattainment area of federal ozone standards. Formaldehyde (HCHO) is a key species in understanding ozone related air pollution; some of the highest HCHO concentrations in North America have been reported for t... | 1 |
491,703 | Stratospheric contribution to high surface ozone in Colorado during springtime | Langford, AO; Aikin, KC; Eubank, CS; Williams, EJ | 2,009 | The contribution of stratosphere-to-troposphere transport to high surface ozone (O-3) along the Colorado Front Range during spring of 1999 is examined using lidar and surface measurements. A deep tropopause fold brought similar to 215 ppbv of O-3 to within 1 km of the highest peaks in the Rocky Mountains on 6 May 1999.... | 1 |
199,915 | Ambient ozone modifies the effect of tumor necrosis factor G-308A on bronchitic symptoms among children with asthma | Lee, YL; Mcconnell, R; Berhane, K; Gilliland, FD | 2,009 | BACKGROUND: Tumor necrosis factor (TNF)-alpha has a recognized role in respiratory pathophysiology. One genetic variant (G-308A) in the promoter region affecting the expression of this cytokine may contribute to airway inflammatory diseases, but the studies on bronchitic symptoms were still inconclusive. Because ozone ... | 1 |
199,819 | An oxidative stress response to polycyclic aromatic hydrocarbon exposure is rapid and complex in arabidopsis thaliana | Liu, H; Weisman, D; Ye, YB; Cui, B; Huang, YH; Colon-Carmona, A; Wang, ZH | 2,009 | Phytoremediation is the use of plants to remove pollutants from contaminated environments. Polycyclic aromatic hydrocarbons (PAHs), a class of widely distributed organic carcinogenic pollutants, are attractive candidates for phytoremediation. To better understand the biochemical, physiological, and molecular responses ... | 0 |
596,032 | Separating effects of changes in atmospheric composition, climate and land-use on carbon sequestration of US Mid-Atlantic temperate forests | Pan, YD; Birdsey, R; Hom, J; Mccullough, K | 2,009 | Terrestrial carbon dynamics have been vastly modified because of changes in atmospheric composition, climate, and land-use. However, few studies provide a complete analysis of the factors and interactions that affect carbon dynamics over a large landscape. This study examines how changes in atmospheric composition (CO2... | 1 |
595,425 | Chronic exposure to outdoor air pollution and lung function in adults | Forbes, LJL; Kapetanakis, V; Rudnicka, AR; Cook, DG; Bush, T; Stedman, JR; Whincup, PH; Strachan, DP; Anderson, HR | 2,009 | Background: The extent to which chronic exposure to outdoor air pollutants influences lung function in adults is unclear. The aim of this study was to measure the association between chronic exposure to outdoor air pollutants and adult lung function.
Methods: The relationship between measures of lung function (forced ... | 1 |
195,277 | Effect of vapour phase hydrogen peroxide, as a decontaminant for civil aviation applications, on microstructure, tensile properties and corrosion resistance of 2024 and 7075 age hardenable aluminium alloys and 304 austenitic stainless steel | Gale, WF; Sofyan, NI; Gale, HS; Sk, MH; Chou, SF; Fergus, JW; Shannon, CG | 2,009 | A response to the chemical or biological contamination of aircraft requires the use of a suitable decontaminant. Among possible chemical decontaminants, vapour phase hydrogen peroxide appears to be a likely candidate in terms of a combination of efficacy, low environmental impact and potential for materials compatibili... | 0 |
191,278 | Comparison of seasonal variations of ozone exposure and fluxes in a Mediterranean Holm oak forest between the exceptionally dry 2003 and the following year | Gerosa, G; Finco, A; Mereu, S; Vitale, M; Manes, F; Denti, AB | 2,009 | Ozone and energy fluxes have been measured using the eddy covariance technique, from June to December 2004 in Castelporziano near Rome (Italy), and compared to similar measurements made in the previous year. The studied ecosystem consisted in a typical Mediterranean Holm oak forest. Stomatal fluxes have been calculated... | 0 |
190,297 | Respiratory health effects among schoolchildren and their relationship to air pollutants in Korea | Moon, JS; Kim, YS; Kim, JH; Son, BS; Kim, DS; Yang, W | 2,009 | The objective of this study is to investigate the relationship between five air pollutants (PM(10), SO(2), NO(2), O(3), CO) measured on the daily basis, and adverse health symptoms using epidemiological surveillance data. The generalized estimated equation (GEE) model, a logistic regression analysis model, was used to ... | 1 |
197,794 | Generation of cholesterol carboxyaldehyde by the reaction of singlet molecular oxygen [O2 (1Delta(g))] as well as ozone with cholesterol | Uemi, M; Ronsein, GE; Miyamoto, S; Medeiros, MH; Di Mascio, P | 2,009 | A few years ago, it was reported that ozone is produced in human atherosclerotic arteries, on the basis of the identification of 3beta-hydroxy-5-oxo-5,6-secocholestan-6-al and 3beta-hydroxy-5beta-hydroxy-B-norcholestane-6beta-carboxaldehyde (ChAld) as their 2,4-dinitrophenylhydrazones. The formation of endogenous ozone... | 0 |
695,392 | Occurrence, Dynamics and Reactions of Organic Pollutants in the Indoor Environment | Salthammer, T; Bahadir, M | 2,009 | The indoor environment is a multidisciplinary scientific field involving chemistry, physics, biology, health sciences, architecture, building sciences and civil engineering. The need for reliable assessment of human exposure to indoor pollutants is attracting increasing attention. This, however, requires a detailed und... | 0 |
199,821 | Enhanced litter input rather than changes in litter chemistry drive soil carbon and nitrogen cycles under elevated CO2: A microcosm study | Liu, LL; King, JS; Booker, FL; Giardina, CP; Allen, HL; Hu, SJ | 2,009 | Elevated CO2 has been shown to stimulate plant productivity and change litter chemistry. These changes in substrate availability may then alter soil microbial processes and possibly lead to feedback effects on N availability. However, the strength of this feedback, and even its direction, remains unknown. Further, unce... | 0 |
196,783 | Temporal processes that contribute to nonlinearity in vegetation responses to ozone exposure and dose | Heath, RL; Lefohn, AS; Musselman, RC | 2,009 | Ozone interacts with plant tissue through distinct temporal processes. Sequentially, plants are exposed to ambient O3 that (1) moves through the leaf boundary layer, (2) is taken up into plant tissue primarily through stomata, and (3) undergoes chemical interaction within plant tissue, first by initiating alterations a... | 1 |
596,385 | Estradiol prevents ozone-induced increases in brain lipid peroxidation and impaired social recognition memory in female rats | Guevara-Guzman, R; Arriaga, V; Kendrick, KM; Bernal, C; Vega, X; Mercado-Gomez, OF; Rivas-Arancibia, S | 2,009 | There is increasing concern about the neurodegenerative and behavioral consequences of ozone pollution in industrialized urban centers throughout the world and that women may be more susceptible to brain neurodegenerative disorders. In the present study we have investigated the effects of chronic (30 or 60 days) exposu... | 1 |
191,274 | The CO2 inhibition of terrestrial isoprene emission significantly affects future ozone projections | Young, PJ; Arneth, A; Schurgers, G; Zeng, G; Pyle, JA | 2,009 | Simulations of future tropospheric composition often include substantial increases in biogenic isoprene emissions arising from the Arrhenius-like leaf emission response and warmer surface temperatures, and from enhanced vegetation productivity in response to temperature and atmospheric CO2 concentration. However, a num... | 0 |
595,943 | Contrasting ozone x pathogen interaction as mediated through competition between juvenile European beech (Fagus sylvatica) and Norway spruce (Picea abies) | Luedemann, G; Matyssek, R; Winkler, JB; Grams, TEE | 2,009 | Based on the growth-differentiation balance theory (GDB) and the influence of tropospheric ozone (O-3) on plants, we hypothesized that pre-conditioning with elevated O-3 reduces adverse effects of the root rot pathogen Phytophthora citricola Sawada. To this end a 2-year phytotron study with juvenile European beech (Fag... | 0 |
191,242 | An automated dynamic chamber system for surface exchange measurement of non-reactive and reactive trace gases of grassland ecosystems | Pape, L; Ammann, C; Nyfeler-Brunner, A; Spirig, C; Hens, K; Meixner, FX | 2,009 | We present an automated dynamic chamber system which is optimised for continuous unattended flux measurements of multiple non-reactive and reactive trace gases on grassland ecosystems. Main design features of our system are (a) highly transparent chamber walls consisting of chemically inert material, (b) individual pur... | 0 |
191,385 | Ethylene and salicylic acid control glutathione biosynthesis in ozone-exposed Arabidopsis thaliana | Yoshida, S; Tamaoki, M; Ioki, M; Ogawa, D; Sato, Y; Aono, M; Kubo, A; Saji, S; Saji, H; Satoh, S; Nakajima, N | 2,009 | Ozone produces reactive oxygen species and induces the synthesis of phytohormones, including ethylene and salicylic acid. These phytohormones act as signal molecules that enhance cell death in response to ozone exposure. However, some studies have shown that ethylene and salicylic acid can instead decrease the magnitud... | 1 |
190,983 | Spatial analysis of air pollution and childhood asthma in Hamilton, Canada: comparing exposure methods in sensitive subgroups | Sahsuvaroglu, T; Jerrett, M; Sears, MR; Mcconnell, R; Finkelstein, N; Arain, A; Newbold, B; Burnett, R | 2,009 | Variations in air pollution exposure within a community may be associated with asthma prevalence. However, studies conducted to date have produced inconsistent results, possibly due to errors in measurement of the exposures.<br /><br /> A standardized asthma survey was administered to children in grades one and eight i... | 0 |
594,285 | Acute effects of outdoor air pollution on forced expiratory volume in 1 s: A panel study of schoolchildren with asthma | Dales, R; Chen, L; Frescura, AM; Liu, L; Villeneuve, PJ | 2,009 | Urban air pollution has been associated with morbidity but little information exists on how it affects diurnal variation of lung function in children with asthma. The purpose of this study was to investigate the acute effects of traffic-related pollution on lung function among children with asthma.
We recorded mornin... | 1 |
191,714 | Vertical advection and nocturnal deposition of ozone over a boreal pine forest | Rannik, U; Mammarella, I; Keronen, P; Vesala, T | 2,009 | Night-time ozone deposition for a Scots pine forest in Southern Finland was studied at the SMEAR II measurement station by evaluating the turbulent eddy covariance (EC), storage change and vertical advection fluxes. Similarly to night-time carbon dioxide flux, the eddy-covariance flux of ozone was decreasing with turbu... | 0 |
614,426 | An Investigation into the Characteristics and Formation Mechanisms of Particles Originating from the Operation of Laser Printers | Morawska, L; He, CR; Johnson, G; Jayaratne, R; Salthammer, T; Wang, H; Uhde, E; Bostrom, T; Modini, R; Ayoko, G; Mcgarry, P; Wensing, M | 2,009 | While current research has demonstrated that the operation of some laser printers results in emission of high concentrations of ultrafine particles, fundamental gaps in knowledge in relation to the emissions still remain. In particular, there have been no answers provided to questions such as the following: (1) What is... | 0 |
102,182 | Effects of ozone on nitrogen metabolism in the leaves of Fagus crenata seedlings under different soil nitrogen loads | Yamaguchi, M; Watanabe, M; Matsumura, H; Kohno, Y; Izuta, T | 2,009 | To clarify the effects of ozone (O-3) on nitrogen (N) metabolism in the leaves of Fagus crenata seedlings under different N loads, the combined effects of O-3 and N load on N enzyme activity, amino acid profiles and soluble protein concentrations were investigated. The seedlings were grown in potted andisol supplied wi... | 0 |
191,488 | Intra-annual growth response of adult Norway spruce (Picea abies [L.] KARST.) and European beech (Fagus sylvatica L.) to an experimentally enhanced, free-air ozone regime | Wipfler, P; Seifert, T; Biber, P; Pretzsch, H | 2,009 | Several findings indicate an impact of ozone on stem diameter growth leaving the question unanswered, if and how the intra-annual growth pattern is changed. In this study the hypotheses are tested, that (1) ozone will alter the absolute growth and (2) alter and shift the period of growth activity within a year. Our dat... | 0 |
594,283 | Increased levels of outdoor air pollutants are associated with reduced bronchodilation in children with asthma | Hernandez-Cadena, L; Holguin, F; Barraza-Villarreal, A; Del Rio-Navarro, BE; Sienra-Monge, JJ; Romieu, I | 2,009 | Background: Increased outdoor air pollution levels are associated with more frequent use of rescue inhalers in subjects with asthma. However, it is unknown whether this phenomenon is explained by an air pollution-mediated increase in respiratory symptom severity or whether air pollutants decrease the efficacy of short... | 1 |
199,758 | Ozone suppresses soil drying- and abscisic acid (ABA)-induced stomatal closure via an ethylene-dependent mechanism | Wilkinson, S; Davies, WJ | 2,009 | Elevated atmospheric ozone concentrations (70 ppb) reduced the sensitivity of stomatal closure to abscisic acid (ABA) in Leontodon hispidus after at least 24 h exposure (1) when detached leaves were fed ABA, and (2) when intact plants were sprayed or injected with ABA. They also reduced the sensitivity of stomatal clos... | 0 |
195,629 | Allantoin in human plasma, serum, and nasal-lining fluids as a biomarker of oxidative stress: Avoiding artifacts and establishing real in vivo concentrations | Gruber, J; Tang, SY; Jenner, AM; Mudway, I; Blomberg, A; Behndig, A; Kasiman, K; Lee, CYJ; Seet, RCS; Zhang, WX; Chen, C; Kelly, FJ; Halliwell, B | 2,009 | Urate is the terminal product of purine metabolism in primates, including humans. Urate is also an efficient scavenger of oxidizing species and is thought to be an important antioxidant in human body fluids. Allantoin, the major oxidation product of urate, has been suggested as a candidate biomarker of oxidative stress... | 0 |
606,363 | Confronting environmental pressure, environmental quality and human health impact indicators of priority air emissions | Geelen, LMJ; Huijbregts, MAJ; Den Hollander, H; Ragas, AMJ; van Jaarsveld, HA; de Zwart, D | 2,009 | This paper evaluates the ranking of 21 priority air pollutants with three indicator schemes: environmental pressure indicator (EPI), environmental quality indicator (EQI), and human health effect indicator (HEI). The EPI and EQI compare the emissions and concentrations with the target emissions and target concentration... | 0 |
196,933 | Effect of the soil wetness state on the stomatal ozone fluxes over Hungary | Meszaros, R; Szinyei, D; Vincze, C; Lagzi, I; Turanyi, T; Haszpra, L; Tomlin, AS | 2,009 | A coupled Eulerian photochemical reaction-transport model and a detailed ozone dry deposition model have been utilised for the estimation of stomatal ozone fluxes over Hungary. Ozone concentrations were modelled on an unstructured triangular grid using a method of lines approach to the solution of the reaction-diffusio... | 0 |
180,146 | Rapid photochemical production of ozone at high concentrations in a rural site during winter | Schnell, RC; Oltmans, SJ; Neely, RR; Endres, MS; Molenar, JV; White, AB | 2,009 | Ozone is an air pollutant that can cause severe respiratory health effects. Photochemical ozone production near the Earth?s surface is considered a summertime, urban phenomenon1?3, where hourly average ozone concentrations can exceed 150 p.p.b., compared with background values of about 50 p.p.b., and wintertime ozone c... | 1 |
102,175 | Impact of experimentally elevated ozone on seed germination and growth of Russian pine (Pinus sylvestris) and spruce (Picea spp.) provenances | Prozherina, N; Nakvasina, E; Oksanen, E | 2,009 | The impact of elevated ozone concentrations on early ontogenetic stages of pine (Pinus sylvestris) and spruce (Picea abies, Picea obovata, P. abies X P. obovata) seedlings originating from different provenances in Russia were studied in the open-field ozone fumigation system located in Kuopio, Finland, over a span of 2... | 0 |
194,160 | Long-term ozone exposure and mortality | Jerrett, M; Burnett, RT; Pope, CA, III; Ito, K; Thurston, G; Krewski, D; Shi, Y; Calle, E; Thun, M | 2,009 | Background: Although many studies have linked elevations in tropospheric ozone to adverse health outcomes, the effect of long-term exposure to ozone on air pollution?related mortality remains uncertain. We examined the potential contribution of exposure to ozone to the risk of death from cardiopulmonary causes and spec... | 1 |
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